WO2002050352A1

WO2002050352A1 - Double knitted fabric

Info

Publication number: WO2002050352A1
Application number: PCT/JP2001/011060
Authority: WO
Inventors: Koichi Matsumoto
Original assignee: Asahi Doken Kabushiki Kaisha
Priority date: 2000-12-18
Filing date: 2001-12-17
Publication date: 2002-06-27
Also published as: US20030106346A1; EP1344856A1; JPWO2002050352A1; JP3867669B2; EP1344856A4

Abstract

A three-dimensional marquisette-like knitted fabric having excellent air-retainability, air permeability, water permeability and translucency, being excellent in warp-direction and weft-direction size stability and shape stability and in linearity, having an unevenness effect on the surface thereof and a slip-prevention effect, and finding a wide range of applications. A double knitted fabric by warp knitting, or preferably a double knitted fabric constituted by front and rear ground materials (1, 2) and linking yarns (3) alternately interwoven with these ground materials, wherein at least one of the front and rear ground materials (1, 2) is knitted by a marquisette braiding by means of chain stitch rows (11, 12) and insertion yarns (5). In addition, the linking yarns (3) linking the front and rear ground materials (1, 2) are moved laterally at least one wale to be obliquely interwoven at every specified course position corresponding to the marquisette braiding of at least one ground material to thereby knit a three-dimensional marquisette pattern.

Description

Detailed double-textile (Technical field)

TECHNICAL FIELD The present invention relates to a double knitted fabric by warp knitting, which is used for land greening, interior decoration, bedding, clothing, nursing care, medical care, interiors, cushioning materials, industrial materials, and various other uses.

[Background technology]

Conventionally, as a double knitted fabric formed by warp knitting of a double lashing machine, that is, a double knitted fabric comprising a front and back fabric and a connecting yarn connecting these two fabrics, both the front and back fabrics are used. Some are flat terrain, others are flat terrain and the other is reticulated, and both are reticulated.Land greening, interior, bedding, clothing, nursing care, medical care, cushioning materials, It is used for industrial materials and other various purposes.

The double knitted fabric is knitted by connecting yarns connecting the front and back base materials to corresponding knitting needles and forming stitches on both base materials. Normally, the connection yarn is knitted at a first glance on the front and back fabrics, and has a structure in which two bridging portions of the connection yarn between the two fabrics enter and leave one stitch. The connecting yarn does not always play a sufficient role as a constituent yarn of the substrate, and has little role in stability, strength, and the like.

In order to compensate for these, the double knitted fabric has a very high density of connecting yarns, and as a result, the basis weight (g / m2) is large and heavy. Furthermore, in order to reduce the weight, it is necessary to use a large amount of relatively thin yarn, which is economically expensive. Use thin thread as connecting thread In such a case, the elastic force is weak, and it tends to be crushed in the thickness direction, so that sufficient pressure resistance cannot be maintained. Moreover, because the connecting yarn is a single-glance knit, it is difficult for it to be firmly fixed to the front and back substrates, and it lacks structural stability due to movement and slipping, which also causes rubbing noise.

Further, since the connecting yarn is knitted at first sight as described above, the loop portion of the stitch of the connecting yarn is likely to protrude from the surface of the base material. In particular, when the connecting yarn is made of a monofilament yarn, the loop portion tends to protrude. Moreover, since the protruding portion of the connecting yarn cannot be covered and covered with the ground knitting yarn, there is also a problem that the feel and feel of the surface of the base material are impaired, and the characteristics of the material of the ground knitting yarn are hardly exhibited.

Furthermore, when the above-mentioned double knitted fabric is used as a cushioning material for bedding or a chair, a relatively thick monofilament yarn may be used as a connecting yarn in order to secure pressure resistance. There is also a problem that a rubbing sound is generated due to the rubbing of the yarns coming and going at the stitch portion, which gives a user discomfort.

As a knitting structure, for example, when knitting the fabrics on the front and back sides with a net-like structure, and connecting adjacent ales or two or more rows of ales by ground knitting yarn such as chain knitting yarn or insertion yarn, For this reason, two or more proofs are required as chain knitting yarns or insertion yarns, and the increase in the number of proofs not only increases the cost mechanically, but also makes it technically difficult, and furthermore, the knitting machine Efficiency and knitting efficiency also decrease.

Furthermore, from the standpoint of knitting technology, even if an insertion yarn or other knitting yarn is inserted on the back side of a ground knitting yarn such as a chain knitting yarn, the yarn holding these at the connecting yarn portion between the front and back fabrics is not In addition, the inserted yarn is apt to be displaced inward between the front and back base materials, does not exert a sufficient insertion effect, and the warp insertion yarn and the like cannot be efficiently inserted into the front and back base materials. Furthermore, there is a limit to the knitting structure for double knitted fabrics using the first-order knitting yarn. The range of tissue selection is small, and the range of patterns and functions is also small.

In view of the above, the present invention has been made to solve the above problem by applying a second knitting structure to a connecting yarn as a double knitted fabric by warp knitting.

[Disclosure of the Invention]

The present invention for solving the above-mentioned problems is a double knitted fabric by warp knitting, comprising a front and back base material and a connecting yarn for connecting these two base materials, wherein the connecting yarn is at least one of the front and back surfaces. It is characterized in that it is knitted on the base in a double-knit organization.

According to this double knitted fabric, the role of the connecting yarn on the stability, strength, etc. of the base material increases because of the second knitting of the connecting yarn. This makes it possible to knit the above-described connecting yarn in, for example, one inch and one foot, thereby reducing the density of the connecting yarn and consequently having a double knitted fabric. The weight can be small and light. In other words, only one bridging portion of the connecting yarn between the two bases enters and exits from the second stitch, and the density of the connecting yarn, particularly the density of the connecting yarn between the front and back bases, is approximately the same as in the case of the first stitch. Halving, weight reduction and increased porosity. And even though it is a double knitted fabric, it can be manufactured economically.

In addition, since the weight and density of the connecting yarn can be reduced, a thicker connecting yarn can be used as the connecting yarn. Will be possible. As a result, the strength against bending moment can be significantly improved, the strength against crushing can be increased while maintaining the weight reduction, and the pressure resistance and elasticity in the thickness direction can be increased. In addition, since the connecting yarn is knitted in a double stitch as described above, the crossing portion of the connecting yarn between the two substrates on the front and back substrates enters and exits with separate stitches. Even if a monofilament yarn is used for the yarn, the generation of rubbing noise between the yarns is suppressed. In particular, if a multifilament yarn such as polyester or nylon or a spun yarn such as cotton yarn is used for the knitting yarn of the substrate, the prevention of rubbing noise can be more effectively achieved. Further, in the case of a thin yarn, a plurality of yarns can be aligned and used as a connecting yarn with the same basis weight as the conventional yarn, and the same pressure resistance as described above can be maintained.

Furthermore, since the connecting yarn to be knitted as described above is stitched (rubbed) by two adjacent ales in the base material, it is difficult for the connecting yarn to protrude from the surface of the base material. It does not impair the quality of the fabric, makes it easy to reveal the characteristics of the material of the ground knitting yarn, has a good appearance, and maintains good quality. In addition, the stitch portion of the connecting yarn plays a role of forming a part of the base material for the second knitting, which not only increases the strength of the base material but also allows the connecting yarn to be firmly formed by the second knitting. The stability of the three-dimensional structure increases. Therefore, by combining the structure of the second knitting of the connecting yarn and the structure of the base knitting yarn, the variation of the knitting structure of the base is increased, and the appearance, the design or the touch, the feeling, and the function are improved. Sex and others can be diversified.

In addition, when knitting the front and back bases with a net structure, depending on the other knitting structure, for example, when binding two rows of ales or three or more rows of ales, or partially knotting them, It can be tied or knotted by the second knitting of the connecting yarn, and unlike the case of tying with a chain knitting yarn or an insertion yarn, there is no need to add a special prize. Efficiency can be increased.

The second double knitted fabric of the present invention is characterized in that the connecting yarn is knitted on at least one of the front and back fabrics in a structure combining a second stitch and a first stitch.

This double knitted fabric has the same connection yarn as the second stitch, In addition, the density of the connecting yarn can be reduced, and the basis weight is small and light. In addition, it becomes economical as a double knitted fabric with a three-dimensional structure. In addition, a thick yarn can be used for the connecting yarn to be knitted, which improves the pressure resistance and elasticity in the thickness direction, and makes it easy to show the characteristics of the material of the ground knitting yarn. In the above, the combination of the second-glance and the first-glance allows a wider variety of organizations to be selected than in the case of only the first-glance and a new knitting structure can be obtained.

In the double knitted fabric, at least a part of the ground knitting yarns of the front and back fabrics may be knitted in a double stitch. As a result, the knitting structure of the front and back fabrics is changed, a double knitted fabric having various structures can be obtained, and the stability of the fabric increases. Further, the second knitting can be selected for both the ground knitting yarn and the connecting yarn of the front and back substrate. In addition, the gauges can be knitted with different gauges on the front and back, and a variety of organizations and designs can be selected, and the weight can be further reduced, making it economical.

In the double knitted fabric, at least one of the front and back fabrics is knitted in a network structure in which a mesh is defined by a string-shaped fabric portion composed of one or a plurality of ale stitch rows, and The connecting yarn may be knitted twice so as to connect adjacent stitch rows at an arbitrary position of the stitch.

In this case, in a case where at least one of the bases has a net shape, the connecting yarn can be firmly and firmly knitted and held in the base by the second stitch. The structure of the formed string-shaped base portion can be stabilized, and the knot strength between the string-shaped base portions can be increased. Furthermore, the effect of stabilizing the three-dimensional structure and preventing rubbing noise can be enhanced.

For example, when the string-shaped base portion defining the mesh is formed of a stitch row of 2 ゥ or more ales, the connecting yarn is knitted so as to join adjacent stitch rows in the string-shaped base portion. can do. As a result, Compared to the case of binding with knitting yarn, the number of proofs can be reduced, and the mechanical efficiency and knitting efficiency can be improved. In addition, the second knitted connecting yarn does not protrude from the surface of the base portion, so that a net-like base material having a good touch and a good appearance can be formed.

Further, in the mesh-like base material, the connecting yarn may be knitted so as to knot the two base parts with each other at a knot part between adjacent base parts. As a result, the knots between the base portions can be reinforced, and the knots can be further firmly knotted.

In at least one of the front and back fabrics of the double knitted fabric, between the side running portion between two adjacent stitches of the second knitted connecting yarn and the ground knitting yarn, the horizontal swing insertion yarn or the warp direction is used. Is inserted.

As a result, the horizontal insertion yarn and the warp insertion yarn are held more stably inside than the original ground knitting yarn, and the effect of inserting the insertion yarn can be sufficiently exhibited. In addition, depending on the insertion form, it can be used as a tightening yarn. Moreover, even if the insertion yarn is a functional material having low wear resistance, weather resistance, etc., the insertion yarn is covered with the ground knitting yarn located outside the insertion yarn. In addition, it can be prevented from being subjected to external pressure or coming into direct contact with human skin, etc., so that the function of the material of the inserted yarn can be sufficiently exhibited, and the durability can be well maintained.

In addition, as a traversing insertion yarn or a warp-direction insertion yarn inserted between the horizontal running portion of the connecting yarn and the ground knitting yarn, a yarn of a material having poor abrasion resistance or contact feeling, or dyeability or coloring. By inserting a yarn of a material with inferior properties, and using a yarn of a material with good abrasion resistance and contact feeling, or a yarn of a material with good dyeing and coloring properties as the ground knitting yarn located outside, It is possible to improve the abrasion resistance and contact feeling of the knitted fabric surface, the dyeing property and the coloring property, and it is possible to satisfactorily maintain the function of the inserted yarn. Further, in a case where the connecting yarn is knitted on both sides of the base fabric, a warp-direction insertion yarn is alternately formed on the front and back between the side running portion of the connecting yarn on each side and the ground knitting yarn. It can be inserted by hanging. Thereby, in addition to facilitating the second knitting of the connecting yarn in knitting, it is possible to easily bring the front and back base materials close to each other by pulling the insertion yarn after knitting.

In the above-mentioned double knitted fabric, at least the connecting yarn knitted on one side of the fabric on the front and back is shifted left and right by at least 1 ale from the paired fabric on the front and back at the required course position. This cross section is inclined with respect to the thickness direction, so that the cross section has a substantially X shape, a substantially V shape, a reverse V shape, a substantially U shape, a reverse U shape, or the like. It can be organized into

As a result, when pressure is applied vertically to the front and back surfaces, the vertical force can be released in the horizontal direction, and the elasticity of the base material itself helps the cushion effect, increasing the pressure resistance and durability. At the same time, it is possible to prevent the bridging portion of the connecting yarn itself from buckling.

Further, in the double knitted fabric, the connecting yarns for connecting the front and back bases are alternately knitted by two proofs, and the bridging and tilting between the front and back bases are substantially perpendicular to the base. By knitting so as to form two types of bridging with an angled bridging, it is possible to further stabilize the three-dimensional structure in the warp direction and the thickness direction, and to provide elasticity in the thickness direction Can be increased.

In the above-mentioned double knitted fabric, by knitting using two or more kinds of yarns having different materials and characteristics as connecting yarns, the surface of the double knitted fabric is provided with concave and convex or strength in pressure resistance. be able to. In addition, by knitting with different lengths of the connecting yarn between the front and back On the surface, unevenness or strength of pressure resistance can be provided. In these cases, in addition to the above characteristics, a double knitted fabric having a more unique appearance and a touch feeling can be obtained.

In particular, after knitting so that the mesh exists partially or over the entire surface by the connecting yarn of the second knitting, sliding and elongation of the connecting yarn are obtained by the expansion action of the heat setting process, thereby forming the mesh shape. By changing the height of the connecting yarn and the connecting yarn, it is possible to create a knitted pattern or an uneven pattern on the surface of the double knitting.

Further, in the double knitted fabric, at least one of the front and back knitting yarns is knitted on the outer surface of the knitted fabric, and the ground knitting yarns on the outer surface are raised and sheared. It can be made. This makes it possible to obtain a brushed surface consisting only of ground knitting yarn, and to obtain a high-quality product with added value.

In the double knitted fabric, at least one of the front and back surfaces can be knitted in a mercury-like manner by the connecting yarn of the second knitting. Furthermore, a double knitted fabric with a unique appearance can be obtained.

In particular, in the double knitted fabric, at least one of the front and back fabrics has a stitch row of chain knitting yarns extending in the knitting direction, and one or several rows of ailes in each of a plurality of courses with respect to this stitch row. The knitted fabric is knitted in a Mercuret-like knitting structure by the insertion yarns that are oscillated and inserted into the fabric. It is preferable that the corresponding course portion is formed by double stitching in each of the front and back substrates in the opposite direction.

As a result, in the machine-like base material, the inserted yarn traversed is held by the second stitch of the connecting yarn, and slipping in the lateral direction is prevented. At the same time, due to the holding action between the ales by the connecting yarn, the corners of the knitted structure in the Markusette tone become stable. In addition, a high-strength yarn such as a conductive material or force-bonded polyamide can be used as the insertion yarn of the mashed knit structure. Even when such a high-quality yarn is used, Can be organized economically. Furthermore, chain knitting yarns of the front and back substrates can be double-knitted, thereby further improving the effect of stabilizing the structure. In the double knitted fabric, at least one of the front and back fabrics may be knitted with the base layer portion of the fabric knitted yarn and the surface layer portion of the knitting yarn constituting a design surface, a functional surface, or the like. . Thereby, it is possible to obtain a double knitted fabric having an appearance, a design, a touch feeling, a feeling, or a desired function according to the purpose and use of the double knitted fabric. As the knitting yarn for knitting the surface layer portion of the base material, at least one kind of flexible yarn such as a multi-filament yarn, a spun yarn, a natural yarn, or an elastic yarn, a fusible yarn, a functional yarn, etc. At least one type of yarn or a mixture of these yarns can be used. By using flexible yarn, the surface of the knitted fabric has a soft appearance.

In addition, if polytrimethylene terephthalate yarn, which is a kind of elastic yarn, is used for the front and back fabrics and the connecting yarn, various double knit fabrics that are soft and stretchable and have excellent cushioning properties, such as It is possible to obtain a double knitted fabric having a flat knitted structure on both sides, or a double knitted fabric having at least one reticulated structure on both sides.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing one embodiment of a double knitted fabric by warp knitting according to the present invention.

FIG. 2 is a schematic enlarged perspective view of a part of the above. FIG. 3 is a schematic enlarged sectional view of a part of the above.

FIG. 4 is an enlarged explanatory view of the second knitting structure of the connecting yarn.

FIG. 5 is a rubbing diagram of each Prov showing one example of the knitting structure of the above.

FIG. 6 is a wrapping diagram of each Prov showing one example of a knitting structure of another embodiment of a double knitted fabric by warp knitting according to the present invention.

FIGS. 7A to 7H are rubbing diagrams of connecting yarns, each of which shows another knitting structure of the connecting yarn.

FIGS. 8A to 8F are wrapping diagrams of a connecting yarn Pro, each illustrating still another knitting structure of the connecting yarn.

FIG. 9A to FIG. 9C are rubbing diagrams of a connecting thread Pro, each illustrating still another knitting structure of the connecting thread.

FIGS. 10A to 10F are rubbing diagrams of a connecting thread Pro, each of which is a combination of the first and second stitches with a single prize maker.

Figures 11A to 11C show the rubbing of the connecting thread Pro, which illustrates the organization of the first and second stitches, or the combination of the second and the second stitches, using two pieces of Promise. FIG.

FIG. 12 is a partially enlarged enlarged sectional view showing still another embodiment of the double knitted fabric of the present invention.

FIGS. 13A and 13B are rubbing diagrams of a connecting yarn Pro, each illustrating a structure in which a connecting shape of a connecting yarn between front and back substrates is changed.

FIG. 14 is a schematic enlarged cross-sectional view of a part showing the bridging shape of the above-described connecting yarn.

FIG. 15 is a rubbing diagram of a proof for a substrate, illustrating an example of a structure in the case of knitting the substrate.

FIG. 16 is a wrapping diagram of each Prop showing a knitting structure of still another embodiment of the double knitted fabric of the present invention. FIG. 17 is a rubbing diagram showing the knitting structure of still another embodiment of the double knitted fabric of the present invention.

FIG. 18 is a wrapping diagram of each Prop showing a knitting structure of still another embodiment of the double knitted fabric of the present invention.

FIG. 19 is a wrapping diagram of each Prop showing a knitting structure of still another embodiment of the double knitted fabric of the present invention.

FIG. 20 is a wrapping diagram of each Prop showing a knitting structure of still another embodiment of the double knitted fabric of the present invention.

FIG. 21 is a schematic enlarged sectional view of a part of the double knitted fabric according to the first embodiment.

FIG. 22A and FIG. 22B are rubbing diagrams showing other examples of the structure of the insertion thread proof inserted between the ground knitting yarn and the connecting yarn on the side of the mesh structure, respectively.

FIG. 23 is a rubbing diagram of Prov. Illustrating another knitting structure of the inserted yarn in the base material.

FIGS. 24A and 24B are rubbing diagrams showing examples of the structure of the insertion thread proof when the insertion thread is inserted between the ground knitting thread and the connecting thread on the side of the plain fabric side, respectively. is there.

FIG. 25 is a schematic enlarged sectional view of a part of the double knitted fabric according to the first embodiment.

FIGS. 26A and 26B are a rubbing diagram of a connecting thread showing a further embodiment of the double knitted fabric of the present invention, and a partially enlarged schematic explanatory view thereof. FIG. 27A and FIG. 27B are a rubbing diagram of a connecting thread and a partially enlarged schematic explanatory view showing still another embodiment of the double knitted fabric of the present invention. FIG. 28 is a wrapping diagram of each Prop showing a knitting structure of still another embodiment of the double knitted fabric of the present invention.

FIG. 29A and FIG. 29B are a partial rubbing diagram and a schematic enlarged explanatory diagram of a part showing still another embodiment of the double knitted fabric of the present invention. FIG. 30 is a partially schematic perspective view showing still another embodiment of the double knitted fabric of the present invention.

FIG. 31 is a partially schematic perspective view showing still another embodiment of the double knitted fabric of the present invention.

FIG. 32 is a partially enlarged schematic cross-sectional view showing still another embodiment of the double knitted fabric of the present invention.

[Best Mode for Carrying Out the Invention] Next, embodiments of the present invention will be described based on examples shown in the drawings. FIG. 1 is a schematic perspective view showing one embodiment of a double knitted fabric by warp knitting according to the present invention. Fig. 2 is a schematic enlarged perspective view of a part of the same, Fig. 3 is a schematic enlarged cross-sectional view of a part of the same, Fig. 4 is an explanatory view of a second knitting structure of the connecting yarn, and Fig. 5 is a knitting structure of the same. It is a wrapping organization chart of each Prov showing an example.

In the figure, (1) and (2) denote front and back base materials, and (3) denotes a connecting yarn connecting these two base materials (1) and (2) at a required interval. In the case of the double knitted fabric (A) of this embodiment, one of the front and back sides, for example, the fabric (1) on the front side is knitted with a mesh structure, and the other backside fabric (2) is knitted with a flat knitted structure. In the figure, (11) indicates a base portion of a pair of stitches forming a mesh (12) in the front side base (1) by aile (w), and (13) indicates the base portion (11) (11). ) Shows nodules between each other.

The connecting yarn (3) is alternately wound on the front and back bases (1) and (2), and at least one of the front and back bases is, for example, as shown in the figure, the two bases (1) and (2) , The knitting is knitted in all or a part of the parts at an arbitrary point. In particular, the connecting yarn (3) is knitted with every other thread (1 in, 1 out) passing through the proof. (31) indicates a bridging portion of the connecting yarn. Specifically, a double lashing machine having two rows of needle beds arranged substantially in parallel, for example, as shown in the knitting structure in FIG. It is composed of the front and back bases (1) and (2), which are knitted together, and the connecting yarn (3) connecting the front and back bases (1) and (2).

In other words, on the front side where the front side fabric (1) is knitted, the chain knitting pliers (L2) and (L3), which alternately introduce two ground knitting yarns, and the other yarns are introduced alternately. ), Knitting the string-shaped base part (11) with the two rows of pail that forms the mesh (12) while oscillatingly inserting the insertion yarn into the two rows of pail with chain knitting. For each required course equivalent to), the chain hen (L2) (L3) is swayed alternately to the left and right, and alternately knotted with the string-shaped base part (11) adjacent to the left and right, and then the original position Then, it is knitted with a net-like structure that is approximately flat diamond-shaped or approximately hexagonal, or a combination of rhombus and approximately hexagon.

On the other hand, on the back side of knitting the backing fabric (2), the chain knitting yarn (L5) and the insertion yarn Prov (L6) guide the chain knitting yarn and the insertion yarn through the entire set (full set). Organize by organization.

Then, for the connecting yarn (3), the connecting yarn (3) is represented by every other connecting yarn, that is, by the connecting yarn Prov (L4), which guides the connecting yarn in one inch and one inch. As shown in the explanatory diagram of Fig. 4, the base material (1) (2) is alternately crossed over the backing material (1) (2), and the stitches are formed by two rows of ales (w) adjacent to each other (1) (2). Knit in a double stitch organization. In particular, the fabric (1) on the front side is knitted by a double stitch so as to form a stitch with two rows of wales (w), which are string-shaped base portions (Π) forming a mesh (12). As a result, the adjacent two rows of ale stitches can be bound by the connecting yarn (3), and a more stable base portion (11) can be formed. Can also. When a monofilament yarn is used for the connecting yarn (3), the binding strength is further increased.

In addition, in the base material (2) of the flat ground structure, knitting is basically performed by a double stitch forming a stitch with two rows of ales (w) corresponding to the ales of the string-shaped base part (11) of the base material (1). . Reference numeral (3a) in FIG. 4 indicates a lateral running portion between adjacent stitches of the connecting yarn (3).

After this knitting, heat setting is performed with appropriate tension, and if necessary, synthetic resin processing, etc., is performed, so that the double-knitted fabric shown in Figs. (A) can be obtained.

In the double knitted fabric (A) of this embodiment, the connecting yarns (3) are guided one by one as described above, and the second knitting is performed. As a result, the density of the crossing portion of the connecting yarn (3) can be reduced by half, and as a result, the weight per unit area can be reduced and lightened while being a double knitted fabric.

In other words, from the two stitches of the connecting yarn (3) on the front and back, only one bridging portion of the connecting yarn (3) between both bases basically enters and leaves (see Fig. 4). Since the density of the crossing portion of the yarn (3) is half that of the single-knit connecting yarn, the overall knitted fabric can be reduced in weight and the porosity can be increased. For example, by knitting the connecting yarns, the number of connecting yarns can be reduced to 1/2, 1/3, and 1/4 of the full set. , The basis weight can be reduced. Conversely, if the basis weight is the same, it is theoretically possible to use a connecting yarn having a thickness of about twice or more. Therefore, the bending moment is greatly improved and the pressure resistance is also improved. Moreover, even when a relatively thick monofilament yarn is used for the connecting yarn, it is difficult for the monofilament yarns to rub each other. In addition, the second knitting allows the connecting yarn to be knitted firmly into the base material and stabilizes it, so that the three-dimensional structure is stable. Drastically improved, and can prevent falling down.

In the case where a thin monofilament yarn is used as the connecting yarn, two or three yarns are aligned and guided by the connecting yarn Prov (L4) to be knitted, which is similar to the case of a thick yarn. And the knitted loop portion of the connecting yarn is less likely to protrude from the surface than in the case of a thick yarn.

As described above, the connecting yarn (3) to be knitted is, as shown in the explanatory view of FIG. 4, in the front and back fabrics (1) and (2), after the yarn forming the stitch such as a chain knitting yarn. ~ side

Since the stitches are formed by two rows of ales adjacent to each other (the inner side between the front and back fabrics), it is difficult to protrude from the surface of the fabric and does not impair the feeling of touch and feeling due to the ground knitting yarn. Furthermore, mixing with the ground knitting yarn of the base material becomes difficult, and the texture of the base knitting yarn can be sufficiently provided on the surface of the knitted fabric. Such an effect is more remarkable as the number of portions where the connecting yarn is knitted is increased. The connecting yarn (3) is not limited to the one knitted with the cord-like base portion (11) that defines the mesh (1 2) in the mesh-like base (1), and is not limited thereto. The knitting thread (L4) can be knitted by alternately swaying left and right for each required course and knitting the two base portions (11) and (11) to each other. In addition, nodules between adjacent base parts (11) (11)

It is also possible to knit the connecting yarn (3) so as to knot the two base parts (11) and (11) with each other only in (13). In any case, the knot strength of the knot portion (13) can be further increased.

Further, the connecting yarn (3) may be knitted by two pieces of proofs so as to alternately knot with the base portion (11) adjacent to the left and right for each required course. For example, two connecting yarns in the knitting structure shown in Fig. 5 are used, and the connecting yarns to be guided alternately are alternately arranged on both sides, and are swayed alternately left and right for each required course corresponding to the mesh. Then, the second knitting can be performed so as to connect the adjacent base parts (11) and (11). By this, the base part (11) The joint (13) between the (11) can be reinforced, and the joint can be further firmly connected. In addition, this eliminates the need to knit two chains of prizes to form a mesh and traverse them along the required course.

In other words, special prizes are added, such as binding two pairs of adjacent ales or three or more pairs of ales, or knotting two strands of chain knitting yarn to connect adjacent base parts on the required course. It is not necessary to reduce the number of sheets, and the knitting machine efficiency and knitting efficiency can be improved.

In the above embodiment, the mesh structure of the front side substrate (1)

The base part (11) forming (12) can be formed by three or more rows of ales, and the size and shape of the mesh (12) can be set arbitrarily. It is possible. The base part (11) can be knitted in a single row of ailes for design and functional effects, but in practice it is desirable to knit in two or more rows of ailes. o

In the embodiment described above, when the front side fabric (1) is knitted with a mesh structure and the back side fabric (2) is knitted with a flat fabric structure, the connecting yarn (3) is connected to the front and back fabrics (1) (2) However, as shown in FIG. 6, the back side fabric (2) can be replaced with the same mesh structure as the front side fabric (1).

At this time, for the connecting yarn (3), at one or both sides of the front and back base materials (1) and (2), for example, a base part forming a mesh and Z or a base part between adjacent base parts are formed. At the joint, knitting can be performed with a knitting structure.

In this case, the meshes of the front and back bases (1) and (2) are not limited to those having the same shape on the front and back and formed at corresponding positions. The sizes can be different. Front and back The double knitted fabric (A) consisting of a mesh corresponding to the grounds (1) and (2) can be suitably used for fishing nets. In this case, by knitting the connecting yarn at the knot portion between the string-shaped base portions as described above, the knot strength can be increased and the durability can be increased.

In any of the above embodiments, the knitting of the connecting yarn (3) can be performed with various knitting structures according to the knitting structure of the front and back fabrics (1) and (2). is there.

For example, as for the connecting thread Pro (L4) in the knitting structure shown in FIGS. 5 and 6, in addition to those shown in FIG. 5 or FIG. 6, FIGS. 7A to 7H, FIGS. 8A to 8F, and FIG. ~ It can be knitted with any knitting organization as exemplified in Fig. 9C.

In addition, in the second stitch in FIG. 9A, since the ale position is different for each course on both the front and back, the perforations when the front and back have a mesh structure are small. If the ale position of the second stitch is changed for each course as shown in Fig. 9B, a larger hole can be formed than in the case of Fig. 9A. According to the second stitch of Fig. 9C, The positions of the holes can be shifted.

In addition, the connecting thread (L4) is not limited to the one in which the connecting thread (3) is knitted on both the front and back bases (1) and (2). As shown in the knitting structure of the connecting yarn Prov (L4), the connecting yarn can be knitted with only one of the front and back base materials.

In any case, the weight per unit area can be reduced, and the elasticity and pressure resistance can be increased, as described above. In addition, the joint strength of the base yarn on the side on which the connecting yarn (3) is knitted can be increased, and it can be manufactured economically, and the appearance, design, touch feeling, feel, and the like can be improved. ·

Regarding the second knitting structure of the connecting yarn (3), in either case of one or both of the front and back fabrics (1) and (2), It is not necessary to knit the stitches in all courses, and knitting can be performed with a knitting structure based on a combination of the stitches and the stitches.

Also, as shown in Fig. 7A to Fig. 7H, Fig. 8A to Fig. 8F, Fig. 9A to Fig. 9C, Fig. 10A to Fig. In addition to the above, two connecting yarns (3) are knitted with a pair of swords, as shown in the knitting structure illustrated in FIGS. 11A to 11C, so that the connecting yarns of the two swords are different. It can be knitted in a knitting organization.

For example, as shown in the organization of Fig. 11A, by performing the second part with one Prov (L4) and the first part with the other Pr (L5), the second part and the first part can be compared. Can be alternately formed in the course direction. Also, by using this organization, the ale of the second edition can be set at any location. In the structure shown in Fig. 11C, when two kinds of yarns are alternately guided by a connecting yarn Prov (L4) and (L5) in a 1-in-3-quarter manner, the base material on the front and back is flat, In any case using a knitting structure such as a brush, a honeycomb, a double shell, a knit, etc., the basis weight of the connecting yarn can be reduced to 1/2 or less, and the double knitted fabric can be significantly reduced in weight. In addition, in the case of the above-mentioned structure, the three-dimensional structure on the front and back can be stabilized by crossing the connecting yarns of the two connecting yarns Pro (L4) and (L5).

Further, two types of yarns are provided in the connecting yarns Pro (L4) and (L5), for example, a monofilament yarn is used in one connecting yarn Prov (L4), and a multifilament yarn is used in the other connecting yarn Prov (L5). Use elastic yarn for the connecting thread Pro (L4), inelastic thread for the other connecting thread Pro (L5), or use materials with different functions or colors for both connecting threads Pro (L4) (L5). Thus, various functions, design features, and effects can be obtained.

In addition, at least one kind of yarn such as a multi-filament yarn, a spun yarn, an elastic yarn, and a fusion yarn, and a mono-filament yarn are used as the connecting yarn. By employing a double stitch structure in which the yarns are alternately knitted for each required course, it is possible to more effectively suppress the generation of rubbing noise between the monofilaments.

Furthermore, by adopting the above-mentioned knitting structure as appropriate, a part where the connecting yarn is not knitted is formed every other course in the ailes in the front and back knitting directions, giving the material feeling of the front and back knitting yarns and connecting. It is possible to change the limit of the number of yarns to be driven in, and it is possible to obtain a feeling of touch and feeling that could not be achieved with conventional double knitted fabrics. For a lighter weight, a double knitted fabric that is harder to collapse can be obtained by increasing the pressure resistance.

In this case, if it is desired to further increase the pressure resistance, or if it is desired to increase the reinforcing effect of the cross structure of the connecting yarn, that is, the effect of preventing the falling of the connecting yarn from being inclined, the connecting yarn should be made thicker. Therefore, it can be suitably used for applications such as industrial materials and cushioning materials.

Also, if the contact feeling of the material on the front and back and the functionality of the material are expected rather than the compressive strength, use a relatively thin yarn as the connecting yarn. If the main purpose is to link the front and back fabrics and the effect of the three-dimensional structure is to be the main purpose, use a relatively thick yarn as the connecting yarn, and then use cotton or acetate as the ground knitting yarn for the front and back fabrics. , Super Fine Multi-Nylon Ester, Heino W-Rex Nylon / Ester, Polytrimethylene Terephthalate, Polyurethane and other elastic yarns are mixed on the front and back, same or different, or every few ales. May be used. If necessary, the above-mentioned yarn may be used for the connecting yarn.

The second knitting structure of the connecting yarns in Fig. 8E and Fig. 8F is a knitting in which a 2 ゥ ale connecting yarn is laterally moved to the adjacent 2 ゥ ale every 2 courses or 3 courses, and is knitted. A material with a texture on the front and back of the knitted fabric, giving a sense of unevenness or a non-slip effect It is. The double knitted fabric of this organization can be suitably used for applications such as clothing, sports, nursing care, medical care, supporters or shoes, slippers, insoles, and wheelchair seats. In addition, it is suitable for interior materials such as floor non-slip, partitions and curtains. It can also be used for various other industrial materials or filters.

In the double stitch structure shown in Fig. 10D or Fig. 10F, the connecting yarn is knitted by guiding the connecting yarn to the connecting yarn Pro (L4) with 1 in 1 out or 1 in 3 out. If it is widened and heat set, a lighter double knitted fabric can be obtained. In addition, since the density of the connecting yarn is low, resin, concrete, and the like easily enter the knitted fabric, so that it can be suitably used as a reinforcing material.

In addition to the above, knitting in various knitting organizations using the well-known two-mesh knitting organization with one piece or two pieces is possible.

As described above, in the case where the connecting yarn (3) is knitted by using one piece of the sword or two pieces of the sword, the bridging between the front and back substrates (1) and (2) of the connecting yarn (3) As shown schematically in Fig. 12, the shape is shifted diagonally from the opposite side (1) (2) between the pair (w) and the right and left by at least 1 ゥ ale. Accordingly, the bridging portion (31) is inclined leftward or rightward or both with respect to the direction perpendicular to the ground (thickness direction), and is substantially X-shaped, substantially V-shaped, inverted V-shaped or substantially U-shaped in cross section. It can be knitted so as to form a shape, an inverted U shape or a substantially parallelogram shape.

Fig. 13A and Fig. 13B illustrate the knitting structure of the connecting thread Pro (L4) when the connecting thread (3) is crossed and a part or all of the connecting thread (3) has a substantially X-shaped cross section. The knitting is performed with a 1 in 1 out, 1 in 2 out or 1 in 3 out.

In the case of the knitting structure shown in FIG. 13A, as shown in FIG. 14, as shown in FIG. 14, the front and back substrates (1) and (2) are substantially perpendicular or nearly perpendicular to the substrate. It is knitted in two types of bridging, bridging and diagonal bridging with a slant angle. (30) indicates a bridging portion that is perpendicular or nearly vertical to the ground, and (31) indicates a diagonal bridging portion. These bridging portions (30) and (31), even if they are monofilament yarns, do not always form a straight line as schematically shown in the figure. There are many cases. When the connecting yarn (3) is knitted with high tension, the force of the bridging portions (30) and (31) of the connecting yarn (3) becomes loose.

In this way, by connecting the connecting yarn (3) obliquely at all or a part of the arbitrary course position, the slanted crossing portion (31), the crossing portion (30) which is almost vertical, and When viewed in cross section, in combination with the second stitch part, etc., a shape such as a substantially trapezoidal shape, an inverted trapezoidal shape, a substantially parallelogram shape, a substantially triangular shape, an inverted triangular shape, a rectangle, or a combination thereof It can be. As a result, the weight of the connecting yarn can be reduced to reduce the weight, and the stability of the three-dimensional structure can be improved.

That is, by adopting a structure having the above-described oblique bridging portion (31), when a load is applied to the ground in a vertical direction, the load is horizontally transferred via the diagonal bridging portion (31). The direction can be changed and released, and the connecting yarn (3) does not buckle or bend excessively, and the three-dimensional structure can be maintained well.

In addition, for one or both of the ground knitting yarns (1) and (2) on the front and back sides, the knitting yarn can be knitted in a double stitch structure. For example, in the knitting structure shown in FIG. 5 or FIG. 6, a chain knit pr (L2) (L3

) And the inserted thread (L1), as shown in Fig. 15, a chain knitted (L2) that alternately guides two types of ground knitting yarns with 1 in 3 out each.

(L3) can be used for knitting with a double stitch structure. In this case, insert ItoPro (LI) can be omitted. Also, less threading of the chain knitting thread to the Prov is required.

When knitting to form a net-like structure, the chain knits (L2) and (L3) are alternately moved left and right by two stitches in the opposite direction to each other for each required course, and It may be knitted so as to alternately knot with the base portion of the ground knitting yarn of Prov (L2) (L3).

In this case, the second knitting structure of the ground knitting yarn can be knitted in combination with the second knitting structure of the connecting yarn (3). This makes the structure of the base material more robust and stable, and changes the knitting structure of the front and back base materials (1) and (2), and furthermore, a double knitted structure having various structures and characteristics. It can be

Furthermore, the present invention provides various combinations of the structure of the knitting yarn of the connecting yarn (3) and the structure of the base material on the front and back, further combining the material and characteristics of the ground knitting yarn and the connecting yarn. In addition, the combination of the front and back fabrics and the characteristics of the knitted fabric can be diversified by combining or inserting technology.

Hereinafter, the embodiment will be described.

The knitting structure shown in Fig. 16 shows one example. In this organization, for example, the fabric (1) on the front and the back is knitted with a mesh structure having a fine mesh of pr (L2) and pr (L3), and the other (2) is chain-knitted through the whole. Knit in a flat knitting structure with Prov (L6) and inserted yarn Prov (L7). In this case, the aile loop formed by the chain crochet (L6) is pulled by the insertion thread and bends right and left in a zigzag manner, which causes expansion and contraction of the knitted fabric and impairs the dimensional stability in the warp or weft direction. However, as shown in the knitting structure diagram in the same figure, the insertion yarn Pro (L8) is further added, and the warp insertion yarn extending in the knitting direction (the warp direction) is inserted and knitted in the same ale to obtain the warp direction. Stop the growth of the width Can be prevented from being reduced. In particular, rubbing the inserted yarn once for every required course such as eight courses (not shown) is also effective in stopping slippage of the inserted yarn in the warp direction.

Double knitted fabric with high dimensional stability in the process due to such knitting structure can be used as sheet, futon cover, bed cover, force sheet, chair upholstery, and also for dimensional stability of civil engineering materials and industrial materials. It can be suitably used for various applications that require performance.

The knitting structure shown in Fig. 17 is an example of a double knitting structure of the connecting yarn (3) in a double knitted fabric having a mesh structure in which the front and back substrates (1) and (2) have a fine mesh. ing. In this case, for the front and back ground knitting fabrics (L2) (L3) and (L5) (L6), the elongation of cotton yarn, spun yarn, multifilament yarn, multifilament yarn, etc. Yarns with few yarns are alternately guided at every other two lines (2 in 2 out), and the stitches are formed while oscillating between the three stitches for each course, and left and right opposite each other for each required course It is skewed alternately in the direction over a few ales, and knitted in a mesh structure so that the yarns of both Proverbs are joined alternately. In addition, the connecting thread (L4) is provided with a connecting thread (3), which is made of rubber, poly (trimethylene terephthalate), polyurethane, or other stretchable or elastic thread, and at least one of the front and back sides. For example, knitting is performed on both base materials, and knitting is performed so as to connect adjacent pairs of ales. As a result, the double knitted fabric has elasticity in both the longitudinal and vertical directions due to the elasticity of the connecting yarn, and also has a cushioning property as a double knitted fabric. This double knitted fabric can be particularly suitably used for supports, underwear, sportswear, cushion covers, transport covers and the like.

Further, if an elastic yarn is used for the ground knitting yarn and a non-stretchable monofilament yarn is used for the connecting yarn, the yarn has a certain degree of elongation, but it is constant due to the elongation regulation by the connecting yarn made of the monofilament yarn. Has the property of not growing any more A double knitted fabric is obtained, which can be suitably used for a chair upholstery or the like. Fig. 18 shows an example of a knitted structure in which both the bases (1) and (2) on the front and back sides have a flat structure and the connecting yarn (3) is knitted in a double stitch. In this knitting structure, each fil (L3) (L6) knitting the front and back fabrics is provided with a multifilament yarn, a spun yarn, a monofilament yarn, and the like as a chain knitting yarn, and is guided through the whole. A multifilament yarn or a monofilament yarn is passed through the Prov. (L1) and (L7) (L8) as weft insertion yarns all through or one in one out. Further, the same thread as described above is inserted through the proof (L2) on the front side as an insertion thread. Then, the connecting yarn Pro (L4) is knitted by guiding the same yarn as the connecting yarn (3) in one inch and one inch.

In the case of this knitting structure, the dimensional stability of the weft is obtained by the second knitting of the connecting yarn (3), the weft insertion yarn by Prov (L1) and the warp insertion yarn by Prov (L2) in the front side fabric. And the structural stability of the double knitted fabric is improved. In particular, it is possible to obtain a knitted fabric product having a large effect of preventing the weft elongation of the second knitting and the warp elongation due to the warp yarn and having high dimensional stability in the weft.

When an elastic yarn or a stretch yarn such as polymethylene terephthalate is used as the connecting yarn (3) for performing the second knitting by the connecting yarn Pro (L4), not only knitting is facilitated but also cushioning is improved. The durability of the effect is increased, and the tight knitting of the base fabric with the second knitting provides a more effective cushioning effect while being light and thin with a good touch feeling. Furthermore, if at least one of the front and back fabrics (1) and (2) is made of the multifilament yarn of the elastic yarn or its processed yarn, a double-knit fabric with a good touch feeling can be knitted.ο

Fig. 19 shows an example of a double knitted fabric in which one of the front and back fabrics (1) and (2) is plain-textured and the other is knitted by mesh.

In this knitting organization, Prov (L1) who composes one of the bases (1) The side of (L2) and (L3) is a flat structure, and the side of Prov (L6), (L7) and (L8), which compose the other substrate (2), is a mesh structure. In this case,

(LI), (L2), and (L3) guide the whole knitting yarn such as an insertion yarn or a chain knitting yarn through a thread, and Prov (L6) and (L7) are 2 in 2 out, and Prov (L8) is The ground knitting yarn is guided in 1 in 1 knit, and the connecting yarns (L4) (1 ^) are knitted in 1 in 1 knit.

When a polyester multi-filament yarn is used for the aforementioned Pro (LI), (L2) and (L3), a solid knitted fabric with reduced elasticity is obtained, and a rubber thread is used for Prov (L2). Use of elastic yarns or elastic yarns such as polyurethane yarns, polymethyl terephthalate yarns, and wooly yarns will result in a knitted fabric having elasticity in the warp direction. In addition, all of Pro (LI) (L2) (L3) or Pro

If an elastic yarn is used for (LI) and (L2), the base material will have elasticity in both directions. Furthermore, if natural fiber yarns such as cotton are used for Prov (L3), (L6) and (L7), it is possible to obtain a double knitted fabric having a good contact feeling on the front and back base material surfaces. Of course, natural fiber yarns can also be used for Pro (LI) (L2), (L8), etc.

According to the knitting structure, the yarn knitted by the pr (L3), (L6), and (L7) can be put out on the surface of the double knitted fabric, and the body can be used in clothing and the like. Can be effectively brought close to the natural fiber. Instead of using the natural fiber, moisture-absorbing, antibacterial, and deodorizing can be achieved by using a fiber that has functions such as moisture absorption, chitosan, catechin, far infrared rays, and negative ions. , Minus ions, far infrared rays, etc.

In any case, if the main purpose is to reduce the weight of the connecting yarn (3), one of the connecting yarns (L4) and (L5) in FIG. Knit only with Itoipur (L4). When the main purpose is to make the solid on the flat ground side, as shown in Figure 19, two types of continuous The knitting is performed using knot proofs (L 4) and (L 5), and the connecting yarns of adjacent second stitches are connected. The second stitch of the connecting thread Prov (L 4) is made at the corresponding ale position on the front and back fabric, and the second stitch of the connecting thread Pro (L 5) is made at a 1 ale offset from the front and back fabric. On the other hand, in the hole of the mesh structure base material (2), the crossing of the connecting yarn intersects in a substantially X-shaped cross section to form a truss structure.

In addition, in the knitting structure shown in Fig. 18, the connecting yarns (L4) are knitted with the second knitting structure shown in Fig. 10F, so that the connecting yarn forms a stitch every other course on the side of the flat structure. This makes it easier for the knitted structure to exhibit elasticity. In addition, since the connecting yarn is every other course, the loop of the connecting yarn becomes 1/2 in combination with the natural fiber, making it less noticeable.

Double knitted fabrics organized in this way are used for sports, support, medical and nursing care, outer garments, bedding, upholstery, interiors, car seats, safety belts, cushions, civilization for greening, construction, etc. It can be suitably used for various applications such as industrial and industrial materials and concrete reinforcing materials.

Further, in the present invention, at least one of the front and back bases (1) and (2) employs an insertion technique to connect adjacent stitches of the second stitch of the connecting yarn (3). Knitting can be performed by inserting a traverse insertion yarn or a warp-direction insertion yarn between the running portion and a yarn forming a stitch of the base and a ground knitting yarn such as an insertion yarn. FIG. 20 shows one example.

In the knitting structure shown in Fig. 20, in the double knitted fabric in which one of the front and back fabrics (1) and (2) is plain-textured and the other is knitted with a mesh structure, the above-mentioned import technique is adopted. An example is shown in which a traversing insertion yarn is inserted and held between the ground knitting yarn of the base material of the mesh structure and the connecting yarn (3).

In this knitting organization, the side of Pro (LI) (L 2) is a flatland organization, and the side of Pro (L 6) (L 7) (L 8) is a mesh organization. In this case, (LI) (L2) conducts the insertion yarn and chain knitting yarn through the full set (full set), and Prov (L6) (L7) conducts the yarn forming the stitch by 2 in 2 out, Prov (L8) guides the insertion yarn traversing over a 2-year ale at 1 inch and 1 inch, and the connecting yarn Pro (L4) guides the connecting yarn (3) at 1 inch and 1 out. To organize. The prize (L5) disposed between the prize (L6) (L7) and the connecting thread prize (L4) on the base (2) side of the mesh structure has a width of 2 ゥ ale for each course. The inserted yarn (5a) to be shaken is knitted, for example, by guiding it in 1 in 1 out.

Thereby, as schematically shown in FIG. 21, the insertion thread (5a) of the Pr (L5) is formed of a ground thread such as a stitch forming thread of the Pr (L6) (L7) and an inserting thread of the Pr (L8). It is inserted into the back side of the knitting yarn (2a), that is, between the ground knitting yarn (2a) and the horizontal running portion (3a) of the connecting yarn (3) without being knitted in the loop of the stitch. The front and back substrate (1) is provided by the side running portion (3a) of the connecting yarn (3).

(2) It is held so that it does not go deeply into the space between them. In other words, the inserted yarn is more stably held inside than the original ground knitting yarn, and the effect of inserting the inserted yarn can be sufficiently exhibited.

For example, if the insertion yarn is knitted in 1 in 1 out, the hole (22)

It is held in the inserted state on the opening side of the (mesh portion), has air permeability, and has a three-dimensional appearance even in the hole (22). In addition, the insertion thread (5a) inserted into the opening side of the hole as described above allows the hole in the mesh tissue to be formed.

(22) It is possible to prevent dust and dirt from entering the inside of (22). Therefore, when used as a fill filter, a good fill filter effect can be exhibited.

Regarding the insertion thread of the above-mentioned Pr (L5), the swing width is increased as in other tissues other than the above, for example, as shown in the tissues illustrated in FIG. 22A or FIG. Insertion by various tissues such as insertion Knitting is possible. This insertion form can be set freely according to the design function and the application. In particular, as shown in FIG. 22A, the insertion yarn is rubbed for each required course, for example, six courses, and inserted between the ground knitting yarn and the laterally running portion of the connecting yarn. It is preferable to prevent the yarn from easily coming off.

According to the structure shown in FIG. 22A, the insertion yarn enters into the holes of the mesh structure. Therefore, if an elastic yarn is used as the insertion yarn, an elastic double knit fabric is obtained. Can be used for a wide range of applications, such as sports, support, clothing, and upholstery.

In addition, as the insertion thread (5a) of the prize (L 5) that enters the hole of the mesh structure as described above, a flat yarn or other light-reflecting thread, luminescent thread, or the like that has been subjected to a grain surface treatment is used. Thereby, it becomes possible to make light such as reflected light visible only from a certain angle direction. In addition, by using the same light reflecting yarn or luminescent yarn as the connecting yarn (3) of the second knitting, a shining net effect can be obtained.

According to the combination of the above-described insertion thread of Prov (L5) and the insertion thread of Prov (L8), it is possible to knit a base having a color change such as a staggered pattern on the surface, so that the shape of the hole is Not only the change but also the color change can be obtained, and the design effect can be further expanded. For example, the insertion thread of Prov (L5) has the structure shown in Fig. 22B, and the insertion thread of Prov (L8) has the structure shown in Fig. 23. If the yarns are alternately guided one by one, different colors will appear in the holes.

As described above, various color effects, designs, and color variations can be obtained by using the above-described insertion technique. For example, several colors can be obtained by inserting an insertion yarn at an arbitrary position between the ground knitting yarn and the horizontal running portion of the connecting yarn, and knitting the insertion yarn into the ground knitting portion at a required position. Color effect and multiple textures.

Further, on the side of the plain fabric base (1) in the knitting structure shown in FIG. 20, similarly to the above, between the proof (L2) of the ground knitting yarn of the chain stitch and the proof (L4) of the connecting yarn, L3) is added and knitted as in the structure of FIG. 24A or FIG. 24B, so that the inserted yarn (5b) of the proof (L3) is connected to the ground knitting yarn (la) and the connecting yarn (3). Can be inserted between the side running part (3a) (Fig. 25)

Then, as shown in FIG. 24A, for example, when the insertion yarn of Pro (L3) is inserted in the warp direction and knitted so as to rub each required course, the elongation is performed using an inelastic yarn as the insertion yarn. For example, elastic yarns can be used to provide warp elasticity. In addition, as shown in FIG. 24B, when the insertion thread of Prov (L3) is swayed and inserted, the substrate (1) can be further stabilized. Moreover, as shown in Fig. 25, the inserted yarn (5b) is held between the ground knitting yarn (la) and the horizontal running portion (3a) of the connecting yarn (3) and appears outside. Therefore, even if a material with poor dyeing and coloring properties, such as aramide fiber yarn and carbon yarn, is used, if the ground knitting yarn is a material with good coloring and coloring properties, the design on the surface of the knitted fabric There will be no problems in appearance.

Note that Fig. 20 shows a case where one of the front and back substrates has a flat structure and the other has a mesh structure.In addition, both the front and back substrates have a mesh structure corresponding to the front and back surfaces, or both have a flat structure. It can be implemented by various knitting organizations. In these cases as well, the connecting yarn is knitted in the same manner as described above, and the traversing insertion yarn or the warp insertion yarn is interposed at least between the ground knitting yarn of one of the base materials and the horizontal running portion of the connection yarn. Can be inserted and implemented.

In addition, when the connecting yarn is knitted on both sides of the fabric, as shown in the structure of FIG. 26A, three pieces of Pro (L4) (L5) (L6) are made into one set. Then, the connecting yarn is guided by the two prizes (L4) and (L6) on both sides, the insertion yarn (17) in the longitudinal direction is guided by the middle pr (L5), and the prongs (L4) and (L6) on both sides are guided. ), The knitting is performed on the opposite side from the position of the Prov, and by knitting the warp insertion thread (17) at the intermediate Prov (L5), as shown in Fig. 26B, The insertion yarns (17) can be alternately inserted into the side running portions (3a) of the front and back connecting yarns (3). This facilitates the second knitting of the connecting yarn (3) on the knitting, and also pulls the front and back substrates (1) and (2) by pulling the insertion yarn (17) after knitting. Can easily be approached.

Further, like the above-mentioned insertion yarn of Prov (L5) or insertion yarn of Prov (L3), a traversing insertion yarn or a warp insertion yarn is inserted between the horizontal running portion of the connecting yarn and the ground knitting yarn. By using the insertion technique to insert, the following implementation is possible.

For example, various functions such as deodorant, antibacterial, moisture-absorbing, heat-generating, antistatic, flame-retardant, electromagnetic-proof, negative-ion, and energizing are used as the insertion yarn between the horizontal running portion of the connecting yarn and the ground knitting yarn. By using a yarn of a functional material having the above characteristics, a double knitted fabric having these functions can be easily and economically knitted. In this case, the yarn of the functional material is held in a place close to the base material, so that its function can be exhibited well. In addition, since the yarns of these functional materials can be positioned inside the original ground knitting yarn, even if the functional materials have low abrasion resistance, weather resistance, etc., they can be directly exposed to the outside air. Touching and receiving external pressure can be prevented. Also, when the double knitted fabric is used for the purpose of contacting the body, the thread of the functional material does not contact the body, and problems such as chemical injury and dirt do not occur. In particular, when the outer side of the inserted yarn of the functional material is knitted with a structure that is covered with the original ground knitting yarn in the base material, the inserted yarn of the plain structure, or the like, the above effect is more remarkably exhibited, and the functionality is improved. Elementary The durability of the material is also improved.

In addition, as an insertion yarn or a warp-direction insertion yarn between the horizontal running portion of the connecting yarn and the ground knitting yarn, a material having poor abrasion resistance and contact feeling, such as an elastic yarn, an elastic yarn, and a high shrinkage yarn, may be used. Even when used, as the original ground knitting yarn such as chain knitting yarn or insertion yarn located outside of these materials, the touch feeling of soft and flexible yarn such as natural fiber or multifilament yarn is By using a yarn of a good material, it is possible to improve the contact feeling of the surface of the knitted fabric, and it is possible to satisfactorily maintain the function of the functional material with the inserted yarn.

Furthermore, even when a material having poor coloring properties such as a monofilament yarn, a conductive yarn, a carbon fiber yarn, an aramide fiber yarn, and a phenol fiber yarn is used as the insertion yarn, By using a material with good dyeing and coloring properties, such as polyester and nylon, as the outer knitting yarn outside the material, the dyeing and coloring properties of the surface of the knitted fabric can be improved. In other words, the functional effect of the yarn of the functional material can be exerted without impairing the dyeing property and the like.

Further, a stretchable yarn or an elastic yarn is arranged as the inner insertion yarn, and a non-stretchable yarn such as a polyester multifilament yarn is arranged as the outer ground knitting yarn, or arranged in the opposite direction. By knitting, a double knitted fabric in which elasticity and non-elasticity coexist can be obtained. This double knitted fabric can be suitably used as clothing, chair upholstery, interior materials, bedding materials, and the like.

In addition, by using the above-described import technology, in the front and back fabric of the double knitted fabric, the stretch of the polytrimethylene tereph® yarn and the like is performed between the horizontal running portion of the connecting yarn to be knitted and the ground knitting yarn. By inserting and knitting the pliable yarn as the traversing insertion yarn, heat setting by widening after knitting becomes easy.

In other words, the traversing insertion yarn of the front and back fabric in a normal double knitted fabric is relatively tightly woven into the base knitting part of the base material. However, it is difficult to slip, and it is not easy to widen by widening. However, as described above, the insertion yarn inserted between the ground knitting yarn and the laterally running portion of the connecting yarn is slippery because it enters the back side of the base material, and can be easily widened by widening. In particular, when the front and back substrates both have a mesh structure or a substantially rhombic or substantially hexagonal net-like structure, etc., insert them by feeding them over the eye holes and widening after knitting. Is larger than the knitting width, making it possible to economically produce double knitted fabrics with a large fabric width. In addition, the fabric has good elasticity.

In addition, in the case where the opening of the eye hole portion of the front and back base material is too large, which causes inconvenience in use such as incapable of sewing by sewing, if the eye hole portion is closed with the insertion thread, the above-described inconvenience may be solved. Will not occur.

Depending on the insertion form, the inner insertion thread may be supported from the back side to the front side by the connection thread, or may simply be hung on the connection thread. The insertion position of the insertion thread can be set as appropriate. For example, the hole in which the insertion thread is inserted and the hole in which the insertion thread is not inserted can be arbitrarily combined.

In addition, by using the second knitting technique, the connecting yarn can be formed into a second stitch on one side of the front and back substrates and a connecting yarn having an insertion structure on the other side.

For example, as shown in FIG. 27A, two prizes (L4) and (L5) are used as a pair as a connecting thread, and both proofs (L4) and (L5) and each connecting thread (3) are used. The position of the Prov is hung on the needle on the opposite side of the front and back, that is, the Prov (L4) is hung on the back side 21 dollars, and the Prov (L5) is hung on the front side needle. As shown in Fig. 27B, the connecting yarns (3) of both proofs (L4) and (L5) are connected to each other by the second knitting of the connecting yarns on the other side. In the insertion tissue for the lateral running part (3a) Can be knitted. Thereby, a double knitted fabric in which the second knitting and the import structure are mixed can be obtained.

In addition, by using the structure of the second knitting of the connecting yarn (3), it is possible to knit in at least one of the front and back base materials in a mercurette-like manner or in a tulle shape. Knitting can also be performed using import technology. For example, in the knitting structure shown in FIG. 5, the threading of the insertion thread Prov (L6) and the connection thread Prov (L4) is made 1 in 1 out, and the connection thread Prov (L4) is adjacent to each other for each required course. By repeating the knitting and returning to the original pail, for example, a knitted mesh is formed on the back side substrate (2) in FIGS. 1 to 3 to form a mercury tone. can do. As a result, the two rows of stitches can be connected firmly and hard to unravel, and the connecting yarn does not easily come out on the surface of the base material.

In addition, as the above-mentioned double knitted fabric in a masset style, knitting with a knitting structure shown in FIG. 28 is also possible.

In this embodiment, the chain knitting yarn (L 3) or (L 6) and the insertion yarn which are guided through at least one of the front and back bases, for example, both bases (1) and (2), respectively Plural (LI) (L2) or (L7) (L8) and a plurality of courses of insertion yarns Prol (LI) (L2), (L7) (L8) for a chain ale extending in the knitting direction One or several rows are alternately oscillated and inserted into the horizontal ale, so that the knitting structure has a Mercurette-like knitting structure with square meshes. In particular, at this time, in both the front and back substrates (1) and (2), insert the insertion thread (L1) or (L7) and (L2) or (L8) in the opposite direction for each required course. The two kinds of insertion yarns are inserted in a cross shape.

As a result, adjacent insertion yarns in the front and back substrates (1) and (2) can be reliably Can be contacted.

In the above-described knitting, as shown in FIG. 28, two kinds of yarns are guided by two prizes (L4) and (L5) as connecting yarns (3) for connecting the front and back substrates (1) and (2). Yarns are knitted, and the course corresponding to the traversing part of the inserted yarn is shifted in the opposite direction and crossed obliquely between the front and back fabrics (1) and (2) to form the front and back fabrics (1) and (2). Then you can do the second stitch. By knitting in this manner, a mercuret-like tone is achieved not only on at least one of the base materials but also on the inner middle layer by the connecting yarn.

As a result, the inserted yarn that is traversed and inserted is held by the second stitch of the connecting yarn on the matrix-like base material, and slippage in the portion inserted in the horizontal direction is prevented, and the holding operation of the connecting yarn is performed. This stabilizes the corners of the Mercuret-like knitted structure. In addition, a conductive material, a high-strength yarn such as carbon or aramid can be used as the insertion yarn of the above-mentioned knitted structure, and even when such a yarn is used, it is economically knitted. can do.

In the above-mentioned knitting, the imported yarns of the ground knitting yarns of the front and back fabrics also cross each other at required course positions, such as inserted yarns (LI) (L2) or (L7) (L8). For example, if the insertion is performed using a thread that is easy to dye, such as nylon or polyester, use the insertion thread Pro (LI) (L8) and the insertion thread Pro (L2) (L7). However, by using yarns of fibers that are difficult to dye such as carbon fiber aramide fibers or conductive fibers, problems such as inability to color in design are eliminated. In addition to this, yarns that have problems with light resistance, abrasion resistance, etc. can be applied to the knitting method of inserting them inside the base material by using them for one of the insertion yarns (L2) (L7). In this case, the insertion yarn inserted behind the ground knitting yarn in Fig. 20 It is more effective to knit the insertion yarns of the insertion yarns Pro (L2) and (L7) with the insertion technique of the insertion yarn Pro (L5).

Furthermore, when a thread made of a conductive material is used for the insertion thread Pro (L2) (L7), all of the insertion thread Pro (L2) (L7) must have two or more stitches as shown in the knitting structure shown in Fig. 28. By laterally inserting over 2 ales to ensure that adjacent insertion yarns are connected and brought into contact. In this case, by knitting the yarn of another inserted yarn Pro (LI) (L8) so as to cross the inserted yarn Pro (L2) (L7), the inserted yarn Pro (L2) is knitted.

(L7) Increases the contact effect of the thread. Furthermore, it is more effective to use a conductive material for the connecting yarns of the two connecting yarns (L4) and (L5).

The use of this double knitted fabric is for electromagnetic wave shielding, and can be used for, for example, a force-ten, a shielded apron, a building shielding material, a shielding material for electric equipment, a conductive gasket having a cushioning property, and the like. . In addition to this, it is possible to knit double knitted fabrics for clothing materials and narrow tapes.

The structure of the double knitted fabric is knitted with the above-mentioned flat ground structure, reticulated structure, or mesh-like structure, or knitted structure with vertical stripes, checkered pattern, or zigzag pattern. It is also possible.

For example, as shown in the structure of Fig. 29A, the connecting thread (L4) and the ground

(L5) between (L6) and (L7), using the insertion technique of inserting the traversing insertion yarn (15) between the ground knitting yarn and the side running portion (3a) of the connecting yarn (3). In at least one of the bases (2), a ridge-shaped base in the knitting direction composed of a stitch row of 2 ゥ ales or more joined by a second stitch of the connecting yarn (3).

(11a) is inserted at a required interval by the traversing insertion yarn by the said Pro (L5).

By connecting by (15), it is possible to form a vertical stripe pattern.

In addition, the base portion (11a) of the connecting yarn (3) by the second stitch The connection part by the re-insertion thread (15) can be knitted by arranging it in a checkered pattern as shown in Fig. 30 or by arranging it in a zigzag shape as shown in Fig. 31.

Furthermore, in the double knitted fabric (A) of each of the above-described embodiments, the connecting yarn (3) is knitted by using two or more types of yarns having different materials and characteristics, so that the double knitted fabric is obtained. (A) The surface of (A) can be made uneven, and the pressure resistance can be varied. Also, by knitting with different lengths of the connecting yarn between the front and back fabrics, the surface of the double knitted fabric can be made uneven, and the pressure resistance can be increased or decreased. In these cases, in addition to the above-described features, a double knitted fabric having a more unique appearance and touch feeling can be obtained. Further, depending on the application, one of the front and back bases (for example, the base on the back side) may be composed of only the knitted structure of the connecting yarn.

Also, after knitting the mesh (12) so as to exist partially or over the entire surface by the connecting yarn (3) of the second knitting, the connecting yarn (3) is expanded by the heat setting process. The knitted pattern or uneven pattern can be created on the surface of the double knitted fabric (A) by changing the mesh shape and the height of the connecting yarn (3) by giving out the slip and elongation of the double knitted fabric.

Furthermore, in the base fabric (1) or (2) on one of the front and back sides, a plurality of ground knitting yarns forming a stitch such as a chain knitting yarn are arranged, and the knitting loop portion of the connecting yarn (3) is almost completely formed. It is also possible to knit so that the knitting loop of the ground knitting yarn is superimposed on the knitting loop of the connecting yarn so as not to appear on the surface. In this case, increasing the tension of the chain knitting yarn is more effective in preventing the knitting loop of the connecting yarn from jumping out.

Further, in the double knitted fabric (A), when the ground knitting yarn is knitted so as to protrude outward from the surface of the knitted fabric, and is further raised and sheared, the raised surface of only the ground knitting yarn is obtained. And high quality products can be obtained. You.

Furthermore, in the double knitted fabric (A), at least one of the front and back fabrics (1) and (2), as shown in Fig. 32, a base layer portion (10a) of the fabric and a design surface and The surface layer (10b) of the knitting yarn for knitting the functional surface can be overlaid. By using various functional yarns or soft and soft yarns for the knitting of the surface layer (10b), these yarns can be exposed to the surface and their functions can be improved. It can be fully demonstrated.

In the above case, for example, as the ground knitting yarn of the base layer portion (10a), a yarn having sufficient strength to knit the double knitted fabric, such as a polyester multifilament yarn, is used. By strongly tightening the two stitches of the connecting thread second stitch, the connecting thread is knitted firmly into the base material and integrated, increasing the stability and improving the effect of preventing the connecting thread from jumping out. it can. On the other hand, by using cotton yarn or yarn of a functional material in the surface layer (10b) as the design surface or functional surface, and knitting softly with a knitting structure such that these yarns easily appear on the surface layer, The feeling of the ground surface can be improved.

In any of the above-described embodiments, at least one of the fabrics on the front and back sides, the amount of chain knitting yarn / input yarn, or the number of courses and knitting structure corresponding to the mesh, for each arbitrary course. Can be changed. As a result, it is possible to knit a material having partially different elasticity and width, that is, cushioning / knitted fabric.

In the double knitted fabric (A) of each embodiment described above, the yarns used for the constituent yarns of the front and back base materials (1) and (2), that is, the ground knitting yarns such as chain knitting yarns and insertion yarns are not particularly limited. It is not selected and is appropriately selected according to the application. Usually, various kinds of natural fiber yarns such as wool, cotton, and cuvula, or nylon and polish are used. Synthetic fiber yarns such as polyester and polypropylene, carbon fiber yarns, and various other multifilament yarns, or processed yarns, drawn yarns, and synthetic fiber yarns such as spun yarns are used, and mixed fiber yarns can be used. I can go.

In particular, at least the outermost ground knitting yarn of the front side substrate (1) has a flexible and good touch feeling such as a synthetic fiber, a processed yarn thereof, a spun yarn of a natural fiber, and a multifilament yarn. In the case of the yarn, the surface of the substrate (1) is increased in flexibility, and the connection yarn (3) made of a monofilament yarn can be prevented from jumping out. Tactile sensation can be obtained.

In this case, while maintaining pressure resistance and moderate cushioning properties, various applications requiring a soft feeling, such as nursing care and medical supplies, bedding, cushioning materials, matting materials, sportswear, and clothes for clothing. O

Further, at least one of the front and back base materials (1) and (2), for example, a yarn or the like coated with a highly water-absorbent resin on the ground knitting yarn of the front base material (1) or by means of divebing or the like. Water-absorbing yarns, metals such as iron, minerals, antibacterial agents, fungicides and other chemicals, or functional yarns with special functions given by adhering or kneading fungi, other highly water-absorbing and hygroscopic materials, antibacterial properties, and prevention It is possible to use a functional yarn having at least one kind of function such as a moldy property, a deodorant property, an antistatic function and the like, and thus, it is possible to have a function according to a use. For example, a water-absorbent and hygroscopic material can be used on the back, and a material with good contact properties such as cotton can be used on the front.

Further, a heat-shrinkable yarn, a heat-fusible yarn or an elastic yarn is attached to all or part of at least one of the front and back base materials (1) and (2) and / or Z or the connecting yarn (3). It can also be knitted using. As a result, By shrinkage-fusion, for example, the stitches formed by the stitch-forming yarns of the base material (1) are tightened or fused to further improve shape retention and stability. In addition, knitting is performed by using different kinds of yarns with different characteristics such as rigidity and flexibility, color, material, hand, dyeing, and other processing effects for the constituent yarns of the front and back base materials (1) and (2). As a result, nets with different appearances and properties on the front and back can be obtained. In addition, when polytrimethylene terephthalate yarn is used for the component yarns and connecting yarns (3) of the front and back fabrics (1) and (2), various types of soft and stretchable cushions are provided. It is possible to obtain a double knitted fabric, for example, a double knitted fabric whose front and back fabric has a flat knitted structure, or at least one of the front and back fabrics has a network structure. This double knitted fabric can be suitably used as a soft and stretchable material particularly for narrow tapes and strings for clothes.

Furthermore, when a synthetic filament monofilament yarn is used as the connecting yarn (3), it can be used as a single yarn or a plurality of aligned yarns. Furthermore, as the connecting yarn (3), an elastic yarn, a multifilament, a spun yarn or a combination thereof can be selected according to the purpose.

The thickness and material of these yarns are determined in consideration of the strength, tension, elasticity, etc. required for the application. For example, for industrial materials such as cushioning materials ゃ matting materials or cushioning materials for seats of various vehicles, double-shell machines are used to knit 18 to 6 gauges (number of needles / inch). 20 to 100 denier yarn, preferably 20 to 200 denier yarn, and 20 to 1000 denier, preferably 30 to 100 500 denier yarn is used. Of course, a thinner gauge, for example 28 to 22 gauge, can be used with a finer thread. If you want to increase the physical strength, you can use 4.5 to 3 gauge and use a thicker yarn or a modified cross-section yarn with the desired function. Also front and back It is possible to knit using different thickness yarns on the base material, further increasing the strength of the base material and improving the stability and cushioning of the three-dimensional structure.

The thickness of the double knitted fabric (A) of the present invention, or at least the size of the mesh (12) of the base material (1) of one of the network structures, differs depending on its use and the like. For use as a material, a material having a thickness of 0.1 to 100 mm and a span of the mesh (12) of 1 to 100 mm is generally used. Of course, it is also possible to carry out the dimensions outside the above-mentioned dimensions. For example, in the case of clothing such as clothes, medical treatment and nursing care, etc., the dimensions can be made smaller than the above.

The double knitted fabric (A) can be suitably used for the following various applications by utilizing the above-mentioned structural characteristics.

That is, belts, bands, bandages, tapes, all-day sabots, all-around protections, hats, rugs, attache cases, rucksacks, clothing spacers and shoulder pads, outerwear and other clothing and clothing As related products or as cushioning materials such as slippers, shoes, insoles, sandals, and other footwear, force pads, entrance mats, anti-friction mats, cushioning materials for helmets, etc. Can be used. Also, bedding mats, pillows, sheets, covers, blankets, sofas, upholstery and other bedding and furniture cores and surface coverings, vehicle seats and ground seat covers, or soft cushions As a breathable interior material, as a motorcycle or bicycle saddle cover, or as a soundproof, ventilating, blindfold curtain or partition, shading net, anti-glare net, screen door, or electromagnetic and anti-static net. It can be used as a net, an electricity net, a transportation cushion material, etc. In addition, it can be used as a base material for non-woven fabrics, laundry nets, non-slip materials, industrial materials such as various fillers and spacers, or as a reinforcing material for resins and foamed concrete, and lightweight boards. It can be used as a reinforcing material for various boards, such as other industrial reinforcing materials and core materials. It can also be used as various cushioning materials for sports, industrial use, etc. In addition, it can be used as a protective material for civil engineering, revetment, greening, water retention material, agricultural net, drain material, civil engineering stabilizing sheet material, breathable safety net, etc.

Further, the double knitted fabric (A) of the present invention can be used in combination with other materials. In particular, in the case of a double knitted fabric in which at least one of the front and back bases has a net structure and the connecting yarns have a substantially V-shaped, inverted V-shaped, or substantially X-shaped cross-section, at least one surface thereof is required. Foams such as woven fabrics, knitted fabrics, non-woven fabrics, meshes, fills, sheets, polyurethane foams and the like, recycled materials, plate-like materials and the like can be laminated and used as a composite material. In this case, the double knitted fabric and another material can be brought into planar contact with each other, and the joining strength can be improved.

For example, a nonwoven fabric is flexible but has poor pressure resistance, and tends to cause settling. However, when the double knitted fabric and the nonwoven fabric are overlapped with each other, the double knitted fabric has the pressure resistance and elasticity. And the nonwoven fabric itself has both cushioning and flexibility.

[Industrial applicability]

As described above, the double knitted fabric of the present invention has the above-described structural characteristics, that is, the ground knitted fabric that prevents the jumping out of the connecting yarn by the second stitch of the connecting yarn on at least one of the front and back base materials. Retention of the touch and texture of the yarn material, prevention of rubbing noise, retention of pressure-resistant elasticity and cushioning in the thickness direction, lightness and void retention, mesh and ground varieties with front and back knitted structures This is used alone or in combination with other materials for land greening, construction civil engineering, interiors, bedding, clothing, medical and nursing care, industrial materials, and various other uses. It can be suitably used.

Claims

Scope of Claims: A double knitted fabric formed by warp knitting, consisting of a front and back fabric and a connecting thread that connects these two fabrics, wherein the connecting yarn is a double knit fabric on at least one of the front and back fabrics. A double knitted fabric characterized by being knitted with a knitted structure.

. The double knitted fabric according to claim 1, wherein at least part of the ground knitting yarns of the front and back substrates are knitted in a double stitch structure.

It is a double knitted fabric made by warp knitting, and is composed of a front and back fabric and a connecting yarn that connects these two fabrics, and the connecting yarn is a double stitch and a single stitch on at least one of the front and back fabrics. A double knitted fabric characterized by being knitted by a combination of the following.

4. The double knitted fabric according to claim 3, wherein at least part of the ground knitting yarns of the front and back substrates are knitted in a double stitch structure.

At least one of the front and back fabrics is knitted with a network structure in which a mesh is defined by a string-like fabric part consisting of one or more wales of stitch rows, and the connecting yarn is connected to any part of the fabric part. The double knitted fabric according to any one of claims 1 to 4, which is double knitted.

The string-like base material portion defining the mesh is made up of two or more wales of stitch rows, and the connecting yarn is double-knitted within the string-like base portion so as to connect adjacent stitch rows. The double knitted fabric according to claim 5.

6. The double knitted fabric according to claim 5, wherein in the net-like base material, the connecting yarn is double-knitted so as to knot both base material parts mutually at knots between adjacent string-like base parts. .

On at least one side of the front and back fabrics, there is a horizontally inserted yarn or a warp between the horizontally running part between the two adjacent stitches of the two-knit connecting yarn and the ground knitting yarn. The double knitted fabric according to any one of claims 1 to 4, wherein a directional insertion yarn is inserted.

9. On at least one of the front and back fabrics, a horizontal insertion yarn or a warp insertion yarn is inserted between the horizontal running part between the two adjacent stitches of the two-knit connecting yarn and the ground knitting yarn. The double knitted fabric according to claim 5, comprising:

10. As the horizontal insertion yarn or warp insertion yarn to be inserted between the horizontal running part of the connecting yarn and the ground knitting yarn, use a yarn made of a material with poor abrasion resistance and touch feeling, or a yarn with dyeability. A yarn made of a material with good abrasion resistance and feel, or a yarn made of a material with good dyeability and coloring properties is used as the ground knitting yarn located on the outside. The double knitted fabric according to claim 8.

11. As the horizontal insertion yarn or warp insertion yarn inserted between the horizontal running part of the connecting yarn and the ground knitting yarn, yarn made of a material with poor abrasion resistance and touch feeling, or dyed yarn. A thread made of a material with poor elasticity and coloring properties is inserted, and a thread made of a material with good abrasion resistance and touch feeling, or a thread made of a material with good dyeability and coloring property is used as the ground knitting thread located on the outside. The double knitted fabric according to claim 9.

12. Connecting yarns are double-knitted on both the front and back sides of the fabric, and warp insertion yarns are alternately strung between the horizontally running portions of the connecting yarns on the front and back sides and the ground knitting yarns on the front and back sides. 9. The double knitted fabric according to claim 8, wherein the double knitted fabric is inserted into the double knitted fabric.

13. Connecting yarns are double-knitted on both the front and back fabrics, and warp insertion yarns are alternately strung between the horizontally running portions of the connecting yarns on the front and back sides and the ground knitting yarns. 10. The double knitted fabric according to claim 9, wherein the double knitted fabric is inserted into the double knitted fabric.

14. At the required course position, the connecting yarn knitted in two stitches on at least one side of the front and back fabrics is moved to the left and right by one wale or more from the opposing wale between the front and back fabrics, and is hung diagonally. Claims that are knitted in such a way that, as a result of being passed, the spanning portion is inclined in the thickness direction, forming an approximately X-shape, approximately V-shape, or inverted V-shape, approximately U-shape, or inverted U-shape, etc. in cross section. Items 1 to 1 5 Any double knitted fabric described in item 1.

15. The connecting threads that connect the front and back fabrics are knitted alternately using two pieces of yarn, and there are two types of threads between the front and back fabrics: one that is nearly perpendicular to the surface of the fabric, and one that is slanted. The double knitted fabric according to any one of claims 1 to 13, characterized in that it is knitted in a spanning shape.

16. Claims 1 to 15, wherein the connecting yarn is knitted using two or more types of yarns having different materials and properties, and the front and back substrate surfaces have differences in pressure strength or unevenness. Any of the double knitted fabrics described in item 1.

17. Claims 1 to 16, in which the front and back fabrics are knitted with different lengths of the spanning portions of connecting threads, so that the surfaces of the front and back fabrics have differences in pressure resistance or unevenness. Any of the double knitted fabrics described in item 1.

18. A claim that is knitted so that at least one of the ground knitting yarns of the front and back substrates is exposed on the outer surface of the knitted fabric, and the ground knitting yarn that is exposed on the outer surface is subjected to a raising or shearing process. The double knitted fabric according to any one of Items 1 to 17.

19. The fabric according to any one of claims 1 to 18, wherein at least one of the front and back fabrics is knitted in a mercustte style using the double-knit connecting yarn. Double knitted fabric.

20. At least one of the front and back fabrics has a stitch row made of chain stitch yarn extending in the knitting direction, and an insertion yarn inserted horizontally into one or more wale horizontal stitch rows for each plurality of courses. As a result, a mercustte-like knitting structure is knitted, and the connecting yarn connecting the front and back fabrics is connected to that of the front and back fabrics at a course position approximately corresponding to the horizontally swiveling insertion part of the insertion yarn, using two pieces of yarn. 11. The double knitted fabric according to claim 19, wherein the double knitted fabric is knitted in two stitches by shifting in opposite directions.

21. On at least one of the front and back substrates, a base layer made of ground knitting yarn of the substrate 20. The double knitted fabric according to any one of claims 1 to 19, wherein the double knitted fabric is made by overlapping knitting with a surface layer portion of knitting yarn constituting a design surface, a functional surface, etc.

22. Claim 2, wherein at least one of the front and back substrates uses at least one type of yarn among multifilament, elastic yarn, spun yarn, and natural yarn as the knitting yarn for knitting the surface layer of the substrate. Double knitted fabric as described in 1.