WO1992021581A1 - Self-standing bag and method and device for making said bag - Google Patents
Self-standing bag and method and device for making said bag Download PDFInfo
- Publication number
- WO1992021581A1 WO1992021581A1 PCT/JP1992/000700 JP9200700W WO9221581A1 WO 1992021581 A1 WO1992021581 A1 WO 1992021581A1 JP 9200700 W JP9200700 W JP 9200700W WO 9221581 A1 WO9221581 A1 WO 9221581A1
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- WO
- WIPO (PCT)
- Prior art keywords
- self
- linear
- bag
- plastic film
- supporting bag
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5861—Spouts
- B65D75/5872—Non-integral spouts
- B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/008—Stiffening or reinforcing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/008—Standing pouches, i.e. "Standbeutel"
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
Definitions
- Self-supporting bag method and apparatus for manufacturing self-supporting bag
- the present invention relates to a self-supporting bag that is rigid, has excellent stability and shape retention when self-standing, and is easy to handle, and a method and an apparatus for manufacturing the self-supporting bag.
- a self-supporting bag made of a film that can stand up without falling down when contents are put into the bag has been known.
- these self-supporting bags include a body film called a dopak and a film constituting the bottom portion, which are double-folded and laminated, and the laminated bottom portion is sealed in a curved line (circular shape).
- the bottom film formed by folding the bottom film formed at the portion forming the bottom of the two opposite body films so as to be integrated at an angle so that the bottom surface becomes angular for example, see 5 7-4 6 7 5 Publication No.
- a dip pack type or one with a square bottom is usually used to fill a liquid material as content and to make it self-sustaining, and those with gusset-folded side walls are mainly It has been used in combination with paper boxes or primarily for filling powders.
- a body plastic part and a bottom part constituting a self-supporting bag are formed into a multilayer plastic film, and the multilayer plastic film is formed as an inner layer. It has a heat-adhesive plastic layer, and the cross-sectional shape of the inner or outer layer of the multilayer plastic film of the body constituting part is such that the concave part and the convex part are adjacent to each other, and the planar shape is vertical, oblique, or horizontal. It was found that by providing a linear rib having a shape of a strip, a curved strip, or a combination of these, it was possible to obtain a self-supporting bag having excellent rigidity, self-sustaining stability, and excellent shape retention.
- the inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, previously pressed a pressing mold having linear projections against a multilayer plastic film, and the thickness of the pressed multilayer plastic film portion.
- a plastic bulge can be formed at the upper end of the groove, and a linear rib is provided by fixing the bulge.
- the present invention has a rigidity, and can stably stand alone when a substance, particularly a liquid substance or a substance having fluidity, is put, can maintain the shape of a bag, and is easy to handle. It is intended to provide a sex bag.
- the present invention is provided with a linear rib capable of efficiently producing this self-supporting bag. It is an object of the present invention to provide a method of manufacturing a self-supporting bag and an apparatus for manufacturing the same.
- the present invention relates to a self-supporting bag comprising a trunk component and a bottom component made of a multilayer plastic film, wherein the multilayer plastic film has a heat-adhesive plastic layer in an inner layer, A linear rib having a cross-sectional shape adjacent to the inner layer or outer layer of the multilayer plastic film of (a), with a concave portion and a convex portion adjacent to each other, and a planar shape of a vertical, horizontal, oblique, curved, or a combination thereof.
- the present invention provides a self-supporting bag characterized by the provision of a self-supporting bag.
- the present invention provides a multilayer plastic film having the linear projections pressed against a multilayer plastic film having a heat-adhesive plastic layer as a surface layer by pressing a pressing mold having a linear projection at the tip.
- Forming a linear rib on the multilayer plastic film by reducing the thickness of the portion to form a linear groove, forming a raised portion at the upper end of the groove, and fixing the raised portion (1).
- a method of manufacturing a linear ribbed self-supporting bag characterized in that it consists of the steps of the step (4) for cutting the bags from the click film.
- the present invention provides a stamping means having a stamp having a linear projection at a tip, a feeding means for feeding a multilayer plastic film having a heat-adhesive plastic layer to a surface layer to the stamping means, and the wire.
- Means for manufacturing a multilayer plastic film with linear ribs comprising means for fixing a raised portion formed by pressing a linear projection (1), the multilayer plastic films with linear ribs or the multilayer with linear ribs Means for stacking the plastic film and another multilayer plastic film such that the heat-adhesive plastic layer is on the inner surface (2), and applying heat sealing to form the shape of the bag on the stacked multilayer plastic film with linear ribs.
- Rubbing means (3) means for cutting bags from the heat-sealed multilayer plastic film
- the present invention provides an apparatus for producing a self-supporting bag with linear ribs, characterized by comprising the means of () c.
- the linear rib provided on the trunk portion of the self-supporting bag of the present invention has a structure having a linear protrusion relative to the linear groove, it is easily bent along the linear groove, and the linear protrusion is formed.
- the c having excellent rigidity for the, the linear rib exhibits excellent effect to satisfy stiffness and shape retention at the same time - thus, according to the present invention, the stiffness in the body portion the film of the self-supporting bag imparting Since there is a linear rib to remove the contents, when the contents are taken out or handled, the waist break phenomenon as seen in the conventional self-supporting bag is not seen at all, and extremely excellent self-sustainability and shape retention are achieved.
- the self-supporting bag according to the present invention can be extremely handled because the stand provided with the linear ribs on the outer layer of the self-supporting bag can also have a slippery effect.
- the self-supporting bag of the present invention is not limited to liquid contents. Body volume was further can Rukoto obtain excellent effects in the same manner also those liquid and solid mixed-content C
- linear ribs are very simple, and the linear ribs can be easily incorporated into a bag-making line. Freestanding bags can be manufactured efficiently:
- FIG. 1 is a schematic view showing an apparatus for producing a multilayer blast film with linear fins used in the step (1) of the present invention:
- FIG. 2 is a plan view showing a multilayer ribbed plastic film produced by the step (1) of the present invention:
- FIG. 3 is a plan view showing another multi-layered plastic film with linear ribs manufactured by the step (1) of the present invention.
- Figure 4 is a plan view showing another linear ribbed multilayer brass plastic film produced by the process of the present invention (1) e
- FIG. 5 is a cross-sectional view showing a state in which a stamp having linear projections, which is an embodiment of the step (1) of the present invention, is pressed against a multilayer plastic film:
- FIG. 6 shows a pressing die having a linear projection, which is one embodiment of the step (1) of the present invention.
- FIG. 7 is an enlarged cross-sectional view showing a state when pressed against a multilayer plastic film.
- FIG. 7 is a cross-sectional view showing another example of the pressing die in FIG.
- FIG. 8 is a cross-sectional view of a multilayer plastic film having linear ribs formed according to FIG.
- FIG. 9 is a schematic view of an apparatus for manufacturing a self-supporting bag with linear ribs of the present invention.
- FIG. 10 is a film for manufacturing a self-supporting bag according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a state in which a trunk component made of a long plastic film is stacked, and a bottom component made of a long plastic film is formed at both ends in the width direction of the trunk component.
- FIG. 11 shows a state in which a bottom component for manufacturing a self-standing bag according to an embodiment of the present invention is folded in a w-shape and overlapped, and two long body components are overlapped. It is sectional drawing.
- Fig. 12 is a plan view showing the heat-sealed part of Fig. 6 in which two superposed body parts are heat-sealed to form two self-supporting bags in the width direction. It is.
- FIG. 13 is a plan view of a self-supporting bag according to an embodiment of the present invention.
- the first 4 (b) are plan views of the self-supporting bag according to an embodiment of the present invention c
- FIG. 15 is a plan view of a self-supporting bag according to an embodiment of the present invention.
- FIG. 16 is a plan view of a self-supporting bag according to an embodiment of the present invention.
- FIG. 17 is a plan view of a self-supporting bag according to an embodiment of the present invention.
- FIG. 18 is a perspective view of the self-standing bag, which is one embodiment of the present invention shown in FIG. 15, when a liquid filling material is put therein.
- FIG. 19 is a side view of the self-supporting bag of FIG. 18 e
- FIG. 20 is a perspective view of a conventional self-standing bag, a dope pack, in which a liquid filler is charged.
- the self-supporting bag of the present invention is a self-supporting bag composed of a body structure and a bottom structure composed of a multilayer plastic film, and the multilayer plastic film has an inner layer or a heat-adhesive plastic layer. .
- the multilayer plastic film is not particularly limited as long as it has a heat-adhesive plastic layer in the inner layer, and various types can be used.
- various plastics For example, polyolefins such as polyethylene and polypropylene, chlorine-containing polyolefins such as polyvinyl chloride, aromatic vinyl polymers such as polystyrene, polyurethane, polyethylene terephthalate, etc.
- Polyamides such as polyester and nylon, polycarbonates, polyarylates, polyethers, copolymers of monomers copolymerizable with ethylene, such as ethylene-g, acid-vinyl copolymers and ethylene-acrylic acid copolymers, Powerful kami such as ionomers, these things
- the material may be used alone or in combination of two or more. If the body and bottom components of the bag are different, even if the inner plastic layers are the same type of plastic, Good or different plastic or same kind Are preferred because they are easy to adhere.
- the inner plastic layer may be a single layer or a multilayer structure of two or more layers.
- a multilayer plastic film a multilayer film obtained by laminating a plastic film having a difference in melting point and a force that can be used as a laminated film in which the above-mentioned plastic and a film made of various other plastics are laminated on an inner heat-adhesive plastic layer is used. Films are preferred. Multi-layer plastic films of plastic films having different melting points are obtained by pressing linear projections against plastic films with lower melting points at temperatures near the melting point of plastic films with lower melting points. Since it does not melt, linear grooves can be formed only in the plastic film layer having a low melting point. It is preferable to use a multilayer plastic film having a difference in the melting point because it is difficult to cut the plastic film even when the linear projections are pressed too much.
- the difference in melting point is not particularly limited, but is preferably one having a difference of 1 oc or more, particularly preferably one having a difference of 20 ° C or more, and more preferably having a difference of 30 or more. Are preferred.
- plastic film having a low melting point examples include polyolefin films such as polyethylene and polyvinyl bromide.
- plastic film having a high melting point include engineering plastic films such as stretched nylon 6-6 and stretched polyethylene terephthalate.
- the inner heat-adhesive plastic layer C can also be used a flexible product layer film obtained by laminating a film of a material other than plastic, such as aluminum two ⁇ beam Ya sheet
- a multilayer plastic film printed can also be used.
- the thickness of the multilayer plastic film is not particularly limited, but is usually from 10 zm to l 0 0 // m. Is used, preferably from 30 to 500 m, particularly preferably from 30 to 111.
- the thickness of the heat-adhesive plastic layer of the inner layer is not particularly limited, and is preferably 20 to 300 m, and particularly preferably 50 to 250 m.
- the self-supporting bag of the present invention has a cross-sectional shape in which a concave portion and a convex portion are adjacent to the inner layer or the outer layer of the multilayer plastic film of the body constituting portion, and the planar shape is a vertical line, a vertical line, or a vertical line. It is necessary to provide a linear, curved line or a combination of these.
- the linear rib provided on the self-supporting bag of the present invention may have a shape in which a palm-shaped groove having a concave cross section and a linear projection having a convex cross section are adjacent to each other.
- a structure having one linear groove between the protrusions is preferable.
- the width of the linear groove having a concave cross-sectional shape is usually 100 to 500 / m, preferably 500 to 300 m, and the depth of the linear groove is c.
- the thickness is preferably within the range of the thickness of the inner layer or outer layer of the multilayer plastic film, but it is linear beyond the thickness of the inner thermoadhesive plastic layer or outer layer within a range that does not impair the function as a self-supporting bag. It is also possible to form grooves
- the height and width of the linear protrusions of the formed linear ribs may be appropriately selected and determined according to the required rigidity, but the height of the protrusions is usually 20 to 500 / m. And preferably 50 to 300 / zm.
- the height of the protrusion refers to the height from the surface of the portion of the plastic film having the linear ribs where the linear ribs are not formed to the top of the protrusion c.
- the planar shape of the linear rib is a vertical strip, a horizontal strip, an oblique strip, a curved strip, or a combination of these.
- the number of linear ribs may be appropriately selected according to the required performance, and may be one or two or more per one side of the body part of the self-supporting bag. However, the number is preferably 2 to 10. When there are two or more linear ribs, they may be separated from each other or connected.
- the planar shape of the linear ribs is usually preferable to be vertical (vertical direction when the self-supporting bag is self-standing), but in order to further enhance the effect It is also possible to combine oblique and vertical linear ribs on the surface, and if the rib effect is required in the horizontal direction, horizontal linear ribs may be applied at all. As described above, the direction of the linear rib is appropriately selected depending on the purpose.
- This linear rib may be applied to either the inner layer or the outer layer of the self-supporting bag, or may be applied to both.
- the linear ribs may be applied to only one side of the body constituting portion of the self-supporting bag, but are preferably applied to both sides.
- the self-supporting bag of the present invention is not particularly limited as long as it is a self-supporting bag composed of a body component and a bottom component made of a multilayer plastic film, and the shape of the body component and the bottom component is not limited. Shapes, gusset shapes, and the like may be used, and various shapes such as those having the same width at the bottom and top of the bag and those having the top narrower than the width at the bottom of the bag can be applied.
- the bottom component is bent and the trunk component and the bottom component are overlapped in a substantially W shape.
- the self-supporting bag of the present invention has a width of the bag corresponding to the width of the bag of the bent portion of the bottom component. It is preferable to have a side seal line forming the side of the bag so that the width of the upper part is reduced.
- the width of the bag is the length between the inner ends of the two side seal lines that form the sides of the self-supporting bag when the self-supporting bag is folded flat, and the width at the bottom end. On the other hand, it means the length in the parallel direction.
- the width of the upper part of the self-supporting bag is not particularly limited as long as it is narrower than the width of the bent part of the bottom structure. , generally not more than 90%, preferably in the range of 4 0-9 0%, preferably in particular 5 5-8 Fei%, the optimum value is 6 0 to 7 5% c
- the side seal line has an inclined portion where the bag width is continuously narrowed.
- the slope portion where the width of the bag is continuously narrowed may be the entire side seal line constituting the side portion of the bag, or may be a part of the side seal line instead of the entirety.
- it is above 30% of the height of the plastic bag, especially above 40% of the height:
- the portion from the bottom of the bag to the height at which the inclined portion starts may have an inclined portion in which the width of the bag is preferably increased so that the width of the bag is approximately the same.
- the inclined portion may have a linear shape, a substantially linear shape, a broken line shape, a curved shape, or a combination thereof.
- the width of the side seal line need not be uniform over the entire length of the side seal line, for example, the upper part of the bag may be large-the width of the side seal building usually has a minimum width of 2 for rigidity.
- mn! Can be selected in the range of S!
- the width of the bag; the provision of a continuously narrowing inclined portion can further enhance the properties of the self-supporting bag.
- each side seal line may be the same at the bottom and the top of the bag.-
- the side seal line is formed by a force that can be formed by various bonding methods and a heat seal.
- the self-supporting bag of the present invention is preferably such that the side seal line has a fin at an intermediate portion of the height of the bag at the time of self-supporting.
- the constricted portion is such that when the content is filled in the self-supporting bag, the constricted portion can bite into the inside of the bag to form a concave portion, and the width of the bag in the constricted portion is the width of the constricted portion.
- the width of at least one of the side seal lines connected vertically is shorter than the width of the bag at the side seal line, and the inner end of the side seal line at the neck is connected above and below the neck. It is the one that is deviated to the inside of the bag from the straight line connecting the inside ends of the side seal lines.
- the magnitude of this displacement is the force that refers to the length between the straight line perpendicular to the straight line and the inner edge of the side seal line; it is not particularly limited and is usually the bag where the neck is located. Range from 2 to 15% of the width of And preferably in the range of 4 to 12%, particularly preferably in the range of 6 to 10%. It is sufficient that at least one constricted portion is provided for each side seal wire, but two or more constricted portions may be provided. It is preferable that the constricted portions are provided symmetrically on both of the two side seal wires.
- the position where the constriction is provided is at the middle of the height of the self-supporting bag.
- the intermediate portion is in a range of 30% to 80% of the height of the self-standing bag, preferably in a range of 40% to 70%, and particularly preferably in a range of 40% to 60%.
- the constricted portion is preferably a force provided at a position where the inclined portion starts, and may be provided at other positions.
- constricted part is not particularly limited, for example, bending a straight line shape
- the force dogleg shape can be various shapes such as curved shapes, such as arcs good preferable c
- This constricted portion allows the constricted portion to bite into the inside of the bag when the bag is filled with contents to form a recess.By providing the constricted portion, the rigidity of the self-supporting bag is further increased. c which can be, it is possible to enhance the shape retention of autonomy bag, it can be easy to hold the self-supporting bag by having in hand the constricted portion to further
- the self-supporting bag of the present invention has a substantially circular arc inwardly directed to the body component at a height approximately the same as the constricted portion and at least 10% of the bag width inward from the side seal line. It is particularly preferred that a linear rib having a curved part is provided!
- the linear rib Since the linear rib is easily bent at the linear groove portion, when the bag is filled with the contents, the end of the concave portion formed by the constricted portion is formed by the bent linear groove. Therefore, the shape of the concave portion formed by the constricted portion can be reliably maintained in a predetermined shape, and excellent self-sustaining stability can be obtained.Further, between the linear rib and the side seal line or between each linear rib. Between them, a tension due to the surface is obtained, and the resistance to crushing can be increased.
- the shape of the linear rib has a substantially arc-shaped curved portion projecting toward the inside of the bag.
- the curvature of this substantially arc-shaped curved portion is not particularly limited, but is usually in the range of R5 to R100 (radius 5 mm to radius 100 mm), preferably R5 to R100. 80, particularly preferably in the range of R 10 to R 50 c
- the curvature of the arcuate curve does not have to be uniform over the entire arcuate curve: the length of the substantially arcuate curve is appropriately selected according to the size of the bag so as to obtain the above-mentioned effects. It is usually in the range of 1 to 20% of the height of the bag, preferably in the range of ⁇ to 15% c ⁇
- the position where the substantially arc-shaped curved portion of each linear rib is provided is approximately the same height as the above-mentioned constricted portion, and is at least 10% of the bag width inward of the side seal line and away from the side seal line. It is.
- the height approximately equal to the constricted portion is usually within a range of ⁇ 20% of the height of the constricted portion, preferably within a range of + 10% to ⁇ 20%, and particularly preferably 0%.
- the position where the substantially arc-shaped curved portion of each linear rib is provided should be at least 10% of the bag width from the side seal line (but, preferably, 15 to 40%).
- the number of the two linear ribs may be one on one surface of the body component, or two or more, but preferably two:
- the at least one linear rib is provided on at least one surface of the body component. Although it is necessary, it is preferably provided symmetrically on each of the torso components on both the front and back sides.
- the lower end of the linear rib is contact lines that are extended to the side seal line to the vicinity 3 ⁇ 4 connexion bag bottom is 3 ⁇ 4 connection extend in U side seal lines like:;! Lower portion of the full
- the position where is provided is preferably a position 15 to 4 inward from the side seal line, and particularly preferably a position 20 to 30% apart.
- the shape of the portion extending to the lower end of the linear rib is A straight line or a curve is preferable, and a straight line is particularly preferable.
- linear ribs upper end position of the extended ⁇ end to the upper end of the shall force preferred c
- the linear ribs are extended to the vicinity of the bag top of rhino Doshiru line from Sai Doshiru line of the bag to the inside It is preferably within 15%, and more preferably within 20% from the upper end of the bag.
- the shape of the part extending at the upper end of the linear rib is preferably a straight line or a curved line.
- the linear rib of the present invention can be formed by pressing a pressing die having a linear projection at a tip against a plastic film to thereby press the plastic projection against the linear projection. It is preferable that the thickness of the illuminated portion is reduced to form a linear groove, and a raised portion is formed at the upper end of the groove, and a linear rib is provided by fixing the raised portion.
- the linear grooves make it easier to bend, and the linear protrusions increase the strength of the bag, making it possible to obtain a self-standing bag with extremely excellent self-standing stability.
- the bottom component portion is folded so that the bottom portion of the self-standing bag becomes substantially hexagonal, and the heat seal portion whose inner end is hatched from both ends of the bent portion toward the bottom end. It is preferred to have.
- the heat-sealed portion having the slanted inner end is formed from the bent portion to the bottom end.
- the slanted inner end of the heat-sealed portion forms a substantially hexagonal bottom when self-standing. That is, the hatched inner end of the heat seal portion is formed so as to form four sides of a substantially hexagonal shape.
- the shape of the hatched portion forming the inner end of the heat seal portion does not necessarily have to be a straight line, but may be a curved line, but a straight line is preferred.
- the angle of the hatched portion may be determined by appropriately selecting various angles, but is preferably in the range of 30 to 60 degrees.
- the hatched heat-seal portion may be heat-sealed without bending the bottom component, or may be heat-sealed by bending the bottom component.
- the self-supporting bag of the present invention has a heat seal portion whose inner end is hatched from both ends of the bent portion of the bottom component to the bottom end so that the bottom portion when self-standing is substantially hexagonal.
- an inner end has a circular arc-shaped heat seal portion having a curvature of R80 or more between lower ends of the oblique line heat seal portion.
- a bottom reinforcing portion is formed on the periphery of the bag bottom by the arc-shaped curved heat seal portion.
- the inner end has an arc curved shape with a curvature of R80 or more, a concave portion is not easily formed in the bottom reinforcing portion. And the bottom reinforcement is difficult to bend inward. Therefore, excellent self-sustaining stability can be obtained.
- the curvature of the inner end of the heat seal portion may be R80 or more, and may be appropriately selected according to the width of the bag at the bottom.
- R80 to R500 is preferable, and R10 is particularly preferable.
- the range of 0 to R300 is preferred.
- the height and width of the self-supporting bag of the present invention are not particularly limited, and various sizes can be selected according to required characteristics. Excellent self-standing stability and shape retention.
- the bag width is 80 to 20 mm.
- the self-supporting bag of the present invention is preferably provided with a linear rib on the inner surface of the content outlet.
- the linear rib has a structure similar to the structure of the linear rib.
- the linear ribs for guiding the contents may be provided so as to extend in the discharging direction of the contents, and may have a linear shape or a curved shape.
- the number of the content guiding linear ribs is not particularly limited, and may be one or two or more.
- This linear rib for guiding the contents may be applied to one side of the inner surface of the self-supporting bag, or preferably to both sides of the IW, particularly preferably to both sides symmetrically. Is not necessarily provided at the upper end of the self-supporting bag, and may be provided at the side wall of the self-supporting bag.
- the mouth of the self-supporting bag can be heat-sealed or sealed with a cap.
- the opening of the self-supporting bag is located at the top of the bag, bend the top of the bag praying and pinch the top of the bag with the folded film piece or clip attached to the bag. It is also preferable to prevent the contents from leaking by fixing by such a method as described above. Further, in the self-supporting bag of the present invention, a notch for opening is formed at the top to facilitate opening, Also, there is no problem if you attach a 11-shaped fastener to the opening and use it as a reclosable type.
- a pressing die having a linear projection at a tip is pressed against a multilayer plastic film having a heat-adhesive plastic layer on a surface layer.
- the thickness of the multilayer plastic film portion against which the linear projections are pressed is reduced to form a linear groove, and a raised portion is formed at the upper end of the groove, and the linear rib is fixed by fixing the raised portion.
- Multi-layer blast The step (1) of providing the film is performed.
- the multilayer plastic film as the raw material in the step (1) may be supplied by cutting a long multilayer plastic film supplied from one raw roll into two pieces in the longitudinal direction.
- the cutting in the longitudinal direction may be performed according to the shape of the bag to be manufactured. However, it is preferable that the cutting is usually performed at the center line of the uncut multi-layered plastic film in the longitudinal direction because power is not wasted.
- the printing gap is reduced by making the distances to the step (3) of the cut multi-layer plastic film equal to each other.
- the linear ribbing in step (1) may be performed on one of the two multilayer plastic films or on both.
- Pressing die used in step (1) is, c linear projections and has a linear projection at the tip, by pressing it into the multilayer plastic film, a plastic film section pressed against its projections
- the thickness of the groove can be reduced to form a linear groove, and a raised portion can be formed at the upper end of the groove.
- the height of the linear projection is at least capable of forming a linear groove and does not hinder the formation of a bulge at the upper end of the groove. Is 0.5-3 mra.
- the width of the linear projection is such that a linear groove can be formed, is usually 5 to 5 mm, preferably 0.5 to 3, and particularly preferably; ⁇ 2 Satsu in ⁇ .
- the cross-sectional shape of the linear projection in the width direction is usually the same from the tip end of the projection to the base of the projection so that the linear projection can be easily pulled out from the formed linear groove. Or wider towards the base.
- the cross-sectional shape of the tip of the linear protrusion in the width direction can be various shapes such as a curved shape such as a circle or an arc, a linear shape, or a combination thereof.
- the linear projection may be a single linear shape, a single curved shape, or a combination of two or more of these.
- the arrangement of the linear projections can be variously arranged: ⁇ For example, two or more linear projections are arranged in parallel and close to each other; Are arranged at intervals, two or more linear projections are arranged in parallel at wide intervals, and the linear projections are arranged in a generally rhombic shape by intersecting each other. Various arrangements such as an arrangement combining these shapes are given.
- the method of pressing linear protrusions as described above in the multilayer brass plastic film is cold compression, pressing the ultrasonic oscillation at the time, it can be carried out in various ways, such as hot-pressing, hot-pressing is preferably c
- the multi-layered plastic film is preferably ripened when pressed against the line-shaped protrusions, and is preferably heated to a temperature equal to or higher than the melting point of the plastic film when pressed against the multi-layered plastic film: If the multilayer plastic film is a multilayer plastic film composed of a plastic film layer having a high melting point and a plastic film layer having a low melting point, the linear projections are melted when pressed against the plastic film layer having a low melting point. It is preferable to heat to a temperature lower than the melting point of the plastic film and lower than the melting point of the plastic film having a high S. It is sufficient if it is the time required for the production, and it is sufficient to select and decide as appropriate, but from the viewpoint of manufacturing efficiency, it is preferable to be as short as possible. This time is usually ⁇ 3 to 3 seconds, preferably 0.5 to 2 seconds
- a linear groove is formed, and a raised portion is formed on at least one side, usually both sides, of the upper end of the groove.
- the multilayer plastic film must not be pushed in as far as it can be cut, and the multilayer plastic film must be connected at the bottom of the groove.
- the thickness of the bottom may be selected as appropriate, but the heat-adhesive plastic layer It is preferable to form a groove so as not to cut off In the step (1) of the present invention, the raised portion formed as described above is fixed.
- the raised part can be fixed by various methods. Forced cooling such as rejection type pressing or cooling with a refrigerant, pressing of a type having a concave portion for fitting a linear rib-shaped protrusion, or a combination of these methods, etc. Forced cooling is preferred because the production efficiency of the multilayer plastic film with ribs is high.
- the forced cooling time may be appropriately selected according to the type of the multilayer plastic film and the pressing condition of the pressing die.
- linear ribs can be formed on the multilayer plastic film.
- the arrangement of the linear ribs is determined by the arrangement of the linear projections pressed against the plastic film, but it is preferable that the linear ribs are arranged in parallel at a specific interval. c .
- the distance between the linear ribs is not particularly limited, and may be appropriately selected and determined according to the required rigidity and the formed linear rib shape.
- step (1) a multilayer plastic film is placed on a flat mold, and linear projections are pressed against the multilayer plastic film.
- the film surface remains flat. It is preferable because linear ribs can be provided on other surfaces.
- the multilayer plastic film is pressed against both sides of the pressing die having the linear projections on both the front and rear surfaces, since two multilayer plastic films can be provided with linear ribs at the same time.
- linear ribs may be provided on only one side of the multilayer plastic film, or may be provided on both sides of the multilayer plastic film .
- a step of printing on the multilayer plastic film may be provided.
- the multilayer plastic film with linear ribs obtained in step (1) or the multilayer brass film obtained in step (1) is used.
- the step (2) of laminating a sticky film and another plastic film the multilayer plastic film to be laminated with the heat-adhesive plastic layer on the inner surface is a different multilayer plastic film. Or a single multilayer plastic film that can be folded and superimposed on two sheets.
- the laminated multilayer plastic film has at least one of the linear ribs formed in step (1). And it is preferable that both plastic films are provided with linear ribs.
- the linear ribs may be provided on one side of each multilayer plastic film. May be provided.
- the ribs may be provided on the outside of the stacked plastic films, may be provided on the inside of the stacked plastic films, and may be provided on both the outside and the inside of the stacked plastic films. May be c
- the superimposed squares are formed on the respective ends of the superimposed multilayer plastic film with linear ribs to form the S portion of the bag.
- the method of stacking the multilayer plastic film may be selected as appropriate according to the shape of the bag to be manufactured.For example, a method of simply stacking two multilayer plastic films, Various methods such as a method of folding C into a W shape and overlapping are applied.
- the multilayer plastic film is laminated by applying the linear rib manufactured in the process (1) to a predetermined shape.
- the bottom component of the self-supporting bag-making film which has a body component constituting a body of a self-supporting bag made of a multilayer plastic film disposed at a position, is longitudinally extended.
- a body component constituting a body of a self-supporting bag made of a multilayer plastic film disposed at a position
- it can be Rukoto substantially W shape when folded into a mountain fold on the direction, and it is preferable to superimpose respective drum body portion to the bottom forming portion of the heat adhesive plastic layer and the inner surface.
- a step (3) of applying a heat seal for forming the shape of the bag to the multilayered plastic film laminated in the step (2) is performed.
- the shape of the bag formed in this step (3) is self-contained having a trunk component and a bottom component. If it is a standing bag, it can be made into various bag shapes.
- the heat sealing in this step (3) is performed to make the shape of the bag, and the shape of the heat seal may be appropriately selected according to the shape of the bag.
- the cutting of the bag performed in this step (4) can be performed by various means such as a cutting blade and a fusing blade.
- the shape to be cut may be determined according to the shape of the bag formed on the multilayer plastic film, and is cut into various cut shapes such as linear cut, curved cut, and punching.
- Step (3) and step (4) may be performed simultaneously.
- heat sealing and fusing can be performed simultaneously with a heat sealing blade, or a cutting blade or fusing blade is provided along the heat seal blade, and a heat seal blade and a cutting blade or fusing blade are provided. It is preferable to perform heat sealing and cutting by simultaneously pressing the cutting blade or fusing blade against the multilayer plastic film or slightly after the heat sealing blade.
- the steps (1), (2), (3) and (4) are continuously performed to continuously manufacture the self-supporting bag with linear ribs.
- a long multilayer plastic film is used as the multilayer plastic film, and the long multilayer plastic film is continuously or intermittently fed to the rib forming apparatus. It is preferred to produce a ribbed multilayer plastic film continuously.
- the feeding of the multilayer plastic film can be performed by various methods, for example, by winding the winding roll continuously or intermittently.
- a preferred method for producing a self-supporting bag according to the present invention is as follows: a pressing die having a linear projection at the tip is pressed against a multilayer plastic film having a heat-adhesive plastic layer on a surface layer. To reduce the thickness of the multilayer plastic film part pressed against it, forming a linear groove and forming a bulge at the upper end of the groove Forming a linear groove having an inwardly protruding substantially arc-shaped curved portion and a linear rib comprising a linear protruding portion on the multilayer plastic film by fixing the raised portion (1).
- the bottom part of the film for producing a self-standing bag, each having a body part constituting the body part of the flexible bag, is formed into a substantially W-shape when bent in a mountain fold in the longitudinal direction, and is thermally bonded.
- the linear rib provided on the trunk component of the self-supporting bag of the present invention is formed in step (1).
- a linear groove composed of the linear groove and the linear protrusion manufactured in the step (1) is formed.
- the bottom component of the self-supporting bag manufacturing film having the body component constituting the body of the self-supporting bag made of a multilayer plastic film with ribs arranged at predetermined positions is folded in a mountain direction in the longitudinal direction.
- a step (2) of superposing the body component on the bottom component with the heat and the heat-adhesive plastic layer as the inner surface is performed so that it can be made almost w-shaped.
- the film for the production of a self-supporting bag is a film composed of a body component and a bottom component
- the film for the production of a self-supporting bag is composed of various multilayer plastic films consisting of the film of the trunk component and the film of the bottom component. Or you can glue them together It may be one obtained by folding a single multilayer plastic film and stacking it on two sheets, or by folding a cylindrical multilayer plastic film and stacking it on two sheets. Good.
- the linear ribs composed of linear grooves and linear protrusions may be inside, outside, or on both sides of the self-supporting bag.
- a method for preparing the film for producing a self-supporting bag can be carried out by various methods.
- the width of the two long trunk components at both ends in the width method of the long bottom component there is a method of bonding the ends in the direction of each direction, or a method of bonding the ends in the width direction of two long multilayer plastic films, and making the vicinity of the bonded part a bottom component.
- the film for the production of plastic bags consists of one multilayer plastic film folded into two layers, the folded part may be used as the bottom component, or non-continuous edges may be bonded together.
- a bottom component made of a long multilayer plastic film separately prepared is prepared at the end in the width direction of the trunk component made of a long multilayer plastic film. How to glue . .
- the vicinity of the folded part can be used as the bottom component.
- Bonding of the bottom component is performed by various bonding methods; heat bonding is preferable.
- the heat-sealing of the bottom-constituting part to the trunk-constituting part may be performed simultaneously with the heat sealing in the next step of the self-standing bag manufacturing method.
- the term includes not only heat sealing in a narrow sense but also welding by ultrasonic waves and bonding by heating an adhesive, etc., but heat sealing in a narrow sense is preferable.
- a film for producing a self-supporting bag can be prepared by various methods, but the bottom component and the trunk component are prepared from separate multilayer plastic films. Are preferred.
- the adhesive portion is formed.
- the self-supporting bag When the self-supporting bag is self-supported, it can also serve as a reinforcement around the entire bottom that comes into contact with the floor surface, and the reinforcement can enhance the rigidity of the bottom.
- the bottom component and the body component are prepared from various multilayer plastic films, the thickness and type of each plastic film can be changed, so that various requirements can be met according to the required characteristics. be able to.
- the width of this adhesive part is usually 2 mn! ⁇ 10 ⁇ is preferred:
- the film for producing a self-supporting bag may have one long bottom component, even if there are two long bottom components at both ends in the width direction of the long trunk component. Good, but it is preferable to have two, because two self-supporting bags can be punched in the width direction, and self-supporting bags can be manufactured efficiently.
- the bottom component is formed into a substantially W-shape when the bottom component of the film for producing a self-supporting bag is bent in a mountain direction in the longitudinal direction.
- the superimposed state does not necessarily have to be substantially W-shaped, but may be substantially W-shaped only when the bottom component is bent in a mountain direction in the longitudinal direction. That is, the trunk component may be folded and stacked on top without bending the bottom component, or the trunk component may be overlapped with the bottom component folded.
- the long torso component when the long torso component is superimposed on the long bottom component, the two pieces are separated from each other at the bent part when the long bottom component is bent in the longitudinal direction.
- the long trunk component is superimposed on the bottom component c
- the bottom component and the trunk component are formed of different films, the bottom component and the trunk component may not be joined, and may be joined. If the torso components are not joined by heat sealing in the subsequent process What is necessary is just to join by, etc.
- Preferred method of the present invention 2: In the method for producing a sex bag, the step (3) of applying a heat seal to form the shape of the bag on the multilayered plastic film laminated in the step (2) is performed.
- the heat sealing in this step (3) is performed to arrange the linear ribs at predetermined positions to obtain the shape of the bag, and the shape of the heat seal according to the shape of the bag. May be appropriately selected. Therefore, it is preferable that the linear rib is formed on the multilayer plastic film at a position calculated in advance.
- the side shape of the self-supporting bag can be formed by applying the above-mentioned heat-sealing line in a state where the bottom constituent parts made of the multilayer plastic film are overlapped in a W-shape.
- the bottom component is subjected to various heat seals with the body components superimposed on each other, a force capable of forming various bottom shapes, and a self-standing bottom that has a substantially hexagonal shape.
- the inner end is inclined heat-seal portion from the bent portion toward the bottom end, or the inner end has a curvature R80 or more between lower ends of the diagonal heat seal portion.
- the heat-sealed part of the circular arc shape is also applied in this step (3).
- the oblique heat seal may be performed without bending the bottom component, or may be performed by bending the bottom component.
- a step (4) of cutting the bag from the multilayer plastic film obtained in the step (3) is performed.
- This step (4) is the same as step (4) of the method for producing a self-supporting bag of the present invention described above.
- steps (1), (2), (3) and (4) are continuously performed in the same manner as the above-described manufacturing method, and the self-supporting bag is continuously processed. It is preferable to produce the self-standing bag efficiently.
- the self-supporting bag of the present invention is manufactured by punching the self-supporting bag with the heat seal line.
- the punching is preferably performed so that two self-supporting bags are taken in the width direction of the long plastic film constituting the body constituting portion. That is, When two self-supporting bags are used, the two self-supporting bags are opposed to each other. Punching can be performed on the formation:
- the height and width of the self-supporting bag are not particularly limited, and the required characteristics can be selected.) Excellent in nature
- An apparatus for producing a self-supporting bag with linear ribs comprises: a pressing means having a pressing die having a linear projection at a tip; a multilayer having a heat-adhesive plastic layer as a surface layer on the pressing means.
- An apparatus for manufacturing a linear ribbed self-supporting bag characterized in that it consists of the means (4).
- the means (1) for producing the multilayer plastic film with linear ribs of the present invention comprises: a stamping means having a stamping die having a linear projection at the tip end; and a heat-adhesive plastic layer on the surface layer of the stamping means. And a means for fixing the raised portion formed by pressing the linear projection.
- the pressing means having a pressing die having a linear projection at the tip can be driven by various driving methods. These driving methods include, for example, a method in which a pressing die is moved up and down to press against a plastic film, and a method in which a linear projection is provided on the surface of a roll, and the roll is rotated, and the plastic film is rotated. c there is a method in which pressed against the
- the stamping die is plate-shaped, and linear projections are provided on both the front and back surfaces, and the multilayer plastic film is pressed simultaneously on both sides of the stamping die. Pressing against a flat pressure plate is preferred because two multilayer plastic films can be provided with linear ribs at the same time: two multilayer plastic films with linear ribs are stacked in this way to form a bag. When formed, so wear and be simultaneously provided a linear rib on the barrel structure portion facing the self-supporting bag, c which may be linear ribbed from multilayer plastic film, the formation of self-supporting bag is carried out continuously and efficiently
- the means for fixing the raised portion can be driven by various driving methods. These driving methods include, for example, a method in which a cooling die is moved up and down to press against a multilayer plastic film, a method in which the cooling die is separated from the multilayer plastic film, and a method in which a cooling roll is rotated to press against the multilayer plastic film.
- the pressing means for pressing the linear projections may be provided with a means for fixing the raised portion, or a separate means for fixing the raised portion may be provided.
- the multilayer plastic film can be moved between them by various methods. There is a method of intermittently moving the film with the film c c
- the means (1) of the present invention can be provided with means for winding the manufactured multilayer plastic film with linear ribs.
- This winding means can wind the multilayer plastic film continuously or intermittently.
- the apparatus for producing a self-supporting bag with linear ribs is a multilayer plastic with linear ribs.
- This multilayer plastic film can be stacked by various methods such as a method of guiding and stacking a multilayer plastic film by a roll, a method of guiding a multilayer plastic film by a guide, and stacking.
- the apparatus for producing a self-supporting bag with linear ribs of the present invention includes means (3) for applying heat sealing to form a bag shape on the laminated multilayer plastic film.
- the welding can be performed by driving various kinds of fusion means such as fusion with a heat seal bar, fusion with ultrasonic oscillation, and fusion with heating of an adhesive by a driving device.
- the driving method is, for example, a method in which the heating means is moved up and down to press against the multilayer plastic film, or is separated from the multilayer plastic film, or a heat-sealing is performed by attaching the ripening means to the peripheral surface of the roll and rotating the roll. This can be done in various ways, such as by swirling:
- the apparatus for producing a self-supporting bag with linear ribs of the present invention has means (4) for cutting the bag from the heat-sealed multilayer plastic film:
- This cutting can be performed by driving a cutting blade or a fusing blade with a driving device:
- the cutting blade may be attached to, for example, a driving device that moves up and down, or may be attached to the peripheral surface of a roll and rotated.
- the present invention is not limited by these examples.
- FIG. 1 is a schematic view of a device for forming a linear groove and a linear riff provided in a self-supporting bag of the present invention.
- a long multilayer plastic film 2 (composition: a two-layer film in which a polyethylene film of 140 ⁇ m and a stretched nylon 6-6 film of 150 ⁇ m are laminated, a thickness of 160 ⁇ m , Width: 5 5 O mm) is fed from the multi-layer plastic film blank roll 1 to the die 4 via the dancer roll 3,
- the multilayer plastic film 2 is placed on a pedestal 18 (flat mold) made of flat metal with the stretched nylon 6-6 film face down.
- a pedestal 18 flat mold
- the stamping die 4 in which linear projections having an arc-shaped curved portion of 600 m in width, 30 mni in length and R15 are arranged at intervals of 30 ° is a stamping die 4 Is lowered by a push-type driving device 5 that can move up and down, and is pressed against the polyethylene film layer of the multilayer plastic film 2.
- the linear projection having a substantially arc-shaped curved portion provided at the tip of the stamping die 4 is heated to 120 ° C., and the depth of the groove in the plastic film is 130 ° C. m, The linear projection was pressed until the thickness of the bottom of the groove became 30 / im, and held for 1 second.
- the holding member 8 is lowered by the holding member driving device 9 that can move the holding member 8 up and down, and the multilayer plastic film 2 is pressed intermittently. Thereafter, the pressing die 4 was pulled up by the pressing die driving device 5 and separated from the plastic film.
- the die 4 is lifted, the multilayer plastic film 2 is held by the holding member 8 and the cooling die 6 so that the multilayer plastic film 2 is not pulled up together with the die 4: c Thereby, it was possible to form a linear raised part of the groove width 6 0 0 m, the linear groove of depth 1 3 0 of the groove and the height 8 0 m to both ends of the upper end of the groove
- the holding member 8 and the cooling die 6 are pulled up, and the multilayer plastic film 2 is driven by the clamps 10 and 13 with the clamp driving devices 11 and 14 to clamp the clamps 10, 12 and 13, 15.
- Each of these clamps is moved in the horizontal direction by one pitch along the clamp axis 16 by the clamp pitch feeding device, and sent to the next cooling device. After moving the multilayer plastic film 2 by one pitch, each clamp returns to the original position again.
- the cooling die 6 is moved down by a cooling type driving device 7 that can move the cooling die 6 up and down, and approaches the multilayer plastic film 2.
- the cooling mold 6 blows air at 25 ° C. on two surfaces of the multilayer plastic film for 1.5 seconds. After that, the cooling mold 6 is pulled up, and the multi-layer plastic film 2 with ribs is wound around the winding roll 20. After the air is started to be blown by the cooling die 6, the pressing die 4 is lowered and pressed against the multilayer plastic film 2. Then, follow the above steps By repeating this, a plastic film with linear grooves and linear ribs can be manufactured continuously.
- the tension of the plastic film 2 to be fed can be adjusted by a tanza roll:
- parallel linear ribs are formed on one side of the multilayer plastic film 2.
- FIG. 3 shows one aspect of the linear ribs formed on the multilayer plastic film 2.
- the linear ribs are diamond shaped:
- a linear rib 2] having a substantially arc-shaped curved portion is formed:
- FIG. 5 shows an example in which the linear projections 22 and 23 at the tip of the stamping die 4 are pressed against the multilayer brass. 'Film 2 to form a linear groove 25 and a raised portion 24.
- FIG. 3 is an enlarged cross-sectional view showing the state: no linear protrusions 22 and 23 are provided; the surface is covered with a heat insulating material 52; heat is multilayered from the linear protrusions 22 and 23; The heat is transmitted to the part where the linear ribs are not transferred to the plastic film;
- FIG. 6 is an enlarged cross-sectional view showing a state where the groove 25 and the raised portion 24 are formed when the interval between the linear projections 22 and 23 in FIG. 5 is shortened.
- the width of the linear projections 22 and 23 is 500 5m, and the interval is 2 ⁇ . Therefore, there are three raised portions 24
- FIG. 7 shows another embodiment of the pressing die 4 of the linear rib forming apparatus provided in the self-standing bag of the present invention in FIG.
- the pressing die 4 is plate-shaped, and has linear projections 22 and 23 on the front and back surfaces.
- the pressing mold 4 is fixed, and a multilayer plastic film is pressed on both sides thereof. Further, the pressurizing plate 51, which is attached to the multilayer plastic film so as to be able to move up and down, is pressed, so that the linear ribs can be attached to the two multilayer plastic films at the same time.
- FIG. 8 is a cross-sectional view of a multilayer plastic film to which linear ribs are attached by the press mold 4 of FIG.
- FIG. 9 is a schematic view showing a self-standing bag manufacturing apparatus of the present invention.
- the plastic film pulled out from the raw roll is the multilayer plastic film used in FIG. I, and the linear groove and linear ribbing device shown in FIG. ) Can add a linear rib.
- the multi-layer plastic film with linear ribs is rotated 90 degrees by the direction changing guide 26, and then the center line in the longitudinal direction is cut by the force cutter 27 to form two lines.
- the two divided multi-layer plastic films with linear ribs are further rotated 90 degrees by a roll 28, and are then superimposed by a roll 30 with the linear ribbed surface inside and at both ends.
- Multilayer plastic film of the bottom component (same film as the multilayer plastic film in Fig. 1) Bend 9 into half and insert c c Four sides of the multilayer plastic film must be stacked at both ends become.
- the multilayer plastic film of the bottom component is supplied from the raw fabric opening on the side surface in the vertical direction in FIG.
- the laminated multilayer plastic film is placed on a heat seal receiving stand 34, and the side and the bottom of the bag are heat sealed by a heat sealer 32 to form a bag.
- the heat-sealed multilayer plastic film was cooled by a cooling mold 35, and then cut into a bag shape by a punching blade 36 to produce a bag 37.
- the remaining multilayer plastic film from which the bag 37 was punched was wound up by a winding roll not shown.
- a cutter 27 is provided in front of the linear ribbing device ( ⁇ ) to form two multi-layer plastic films, and the multi-layer plastic film is applied to the pressing die in FIG.
- Linear ribs may be provided.
- Fig. 10 shows a multi-layer plastic film with two long linear ribs of the same width.
- Laminated part 41 is overlapped, the both ends in the width direction are opened, and a multi-layer plastic film of long length is formed on both ends
- the bottom constituent part 42 made of is formed by heat-sealing the polyfolivirene layer with a heat sealer at 180 to make the Bolifurovylene layer a heat-sealing surface, and is joined by a heat-sealing wire 43 having a width of 5 mm. Since the heat seal wire 43 is disposed around the bottom of the self-supporting bag when the self-supporting bag is self-standing, the rigidity of the bottom of the self-supporting bag can be increased.
- an up-and-down ⁇ 80 C saw blade is pressed against the flat body component 41, thereby forming a side seal wire 4 6 constituting a side portion of the self-supporting bag.
- This stacked body has a low melting point polypropylene film on the inside, so it can be easily fused with a heat seal bar at 180-this side seal Line 46 is 5 mm wide, has a constriction in the vertical middle of the free-standing bag, and the width of the bag decreases continuously from the constriction toward the top of the free-standing bag. Meanwhile c and has a bottom forming portion folded in W-shape, the force polypropylene fill face arm are in contact with each other is heating Bok seal rhino Doshiru line.
- the heat seal wire 43 is also applied simultaneously with the heat seal wire 44.
- These heat seal wires may be applied separately.
- This can be performed by pressing the heat shield over the multilayer plastic film.
- the surface where the melting point is low and the polypropylene films are in contact with each other is the heat sealing force. Since they are not sealed, the heat seals 43, 44 and the side seal wires 46 can be efficiently provided.
- the length between the bent portion 45 and the bottom end may be appropriately selected according to the required characteristics of the self-supporting bag, but is preferably 10 to 40% of the width of the self-supporting bag.
- a mouth is provided at the upper end of the self-supporting bag, and the width of the mouth is about 50% of the width of the bent portion at the bottom.
- the plastic film 4] provided with the side seal wire 46 can be made into a self-supporting bag by punching the outside of the side seal wire 46 with a punching blade :: the construction and the stamping of, may be carried out at the same time c
- the remaining long multilayer plastic film from which the self-supporting bag was punched was wound around a mouth (not shown).
- FIG. 13 is a plan view of a self-supporting bag according to an embodiment of the present invention.
- FIG. 13 shows a self-supporting bag obtained by attaching a cap with a cap to the self-supporting bag of the present invention punched by the self-supporting bag manufacturing apparatus shown in FIG.
- the side seal line 46 on the side of the self-supporting bag has a constriction between the points B and C in the middle.c
- the diagonal heat seal line 44 is However, the portion surrounded by the heat seal wire 44 and the bottom heat seal wire 43 is heat sealed leaving an ellipse and a circle, and the rigidity of the bottom is further enhanced.
- the size of the self-supporting bag is 260 mm, the width of the self-supporting bag is 140 mm at the bent part 5, and the width of the mouth at the upper end of the self-supporting bag. Is 80 strokes, and the length between the bent part 5 and the bottom end is 40 mm c
- FIG. 14 shows a self-supporting bag obtained by attaching a stopper with a cap to the self-supporting bag of the present invention punched by the self-supporting bag manufacturing apparatus shown in FIG.
- the side seal line 46 on the side of the self-supporting bag has a constricted portion sandwiched between the points B and C in the middle.
- the self-supporting bag has a height that is 10% lower than the height of the bag from the constricted point A, and is inward from the side seal line 46 at a position 30% of the bag width.
- the linear rib 21 has a pair of symmetrical linear ribs 21 each having a substantially arc-shaped curved portion that is protruding inward.
- the linear rib 21 has an inwardly protruding arc-shaped curve of R 1 ⁇ .
- the length of the arcuate curved part is 3 Omni.
- the linear rib 2] has an arcuate curve of R] 00 at the upper end, and the end is a bag. 15% below the upper edge of the bag and 5% of the width of the bag inward from the side seal line, the pair of linear ribs on the front and back, respectively, Since the linear ribs 2 ⁇ are easily bent, the linear grooves are bent when the self-supporting bag is filled with the contents, and the concave portions caused by the narrow portions are formed.
- a concave portion caused by a constricted portion can be reliably formed in a predetermined shape, and extremely excellent self-standing stability can be obtained: Also, a concave portion is formed in a predetermined position in a predetermined shape. As a result, extremely excellent shape retention can be obtained.
- the portion of the heat seal wire 44 whose inner end is oblique is shaped as a heat rail 44 and the portion surrounded by the heat seal wire 43 at the bottom is heat-sealed leaving an oval and a circle. , The rigidity of the bottom is further enhanced c
- the size of the self-supporting bag is 26 cm in height, the width of the self-supporting bag is 14 cm at the bent part 45, and the width of the mouth at the upper end of the self-supporting bag is Is 8 CID, and the length between the bent part ⁇ and the bottom end is 4 cm
- FIG. 15, FIG. 16 and FIG. 17 are plan views showing another embodiment of the self-supporting bag of the present invention.
- the upper end and lower end of the linear rib 21 are extended, and the upper end extends to a height of about 85% of the height of the bag.
- the lower end extends along the side seal line 46 inward from the side seal line 46 to a position about 25% of the bag width: a surface is formed by the linear rib 21. It becomes a self-supporting bag with extremely excellent self-sustaining stability.
- the lower end of the bottom of the self-supporting bag has a heat shield with an inside hatched on both sides of the bottom of the bag.
- a linear rib 53 for guiding the contents is provided on the inner surface of the torso component at the upper part of the self-supporting bag.
- the linear rib 53 has the same shape as the linear rib 21.
- a passage for the contents is formed by the rib, and the contents can be easily discharged through the passage.
- the upper part of the constricted part provided in the middle part is a straight line.
- the linear rib 21 is provided at the lower end in the same manner as in FIG. 15, but the upper end is not extended.
- Fig. 17 shows that the outside edge of the side seal wire 46 is the same width as the bottom of the bag, and when punching a self-supporting bag from plastic film, it is possible to punch the self-supporting bag without removing the scrubbing pieces. There are advantages of being able. Even if the outer end of the side seal wire is provided extra, the self-sustaining stability can be sufficiently maintained.
- FIG. 18 is a perspective view when the self-supporting bag of FIG. 15 is filled with a liquid content.
- FIG. 19 is a side view when the contents are filled in the self-supporting bag of FIG. 18.
- FIG. 20 shows a conventional dopepack which is a self-supporting bag, and the bottom is provided with an arc-shaped heat seal portion whose inner end is R65. A concave portion is formed in the bottom reinforcement part, and the independence is poor.
- a linear rib can be easily and efficiently attached to a multilayer plastic film, and the rigidity of the multilayer plastic film can be increased.
- a highly rigid self-supporting bag with linear ribs can be efficiently manufactured.
- the present invention relates to a self-supporting bag which is excellent in stability and shape retention when self-standing, and is easy to handle.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92910714A EP0541821B1 (en) | 1991-05-29 | 1992-05-28 | Self-standing bag and method and device for making said bag |
DE69223743T DE69223743T2 (de) | 1991-05-29 | 1992-05-28 | Standbodenbeutel sowie verfahren und vorrichtung zu dessen herstellung |
AU18853/92A AU653606B2 (en) | 1991-05-29 | 1992-05-28 | Self-standing bag and method and device for making said bag |
CA002088249A CA2088249C (en) | 1991-05-29 | 1992-05-28 | Self-standing bag and method and device for making said bag |
KR1019930700261A KR960016322B1 (ko) | 1991-05-29 | 1992-05-28 | 자립성 봉지, 자립성 봉지의 제조방법 및 제조장치 |
US07/965,287 US5352043A (en) | 1991-05-29 | 1992-05-28 | Self-supporting bag, a method of production thereof and an apparatus for production thereof |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP071298U JPH0625142U (ja) | 1991-05-29 | 1991-05-29 | 包装袋 |
JP3/71298U | 1991-05-29 | ||
JP3/51203U | 1991-07-03 | ||
JP051203U JPH0625143U (ja) | 1991-07-03 | 1991-07-03 | 包装袋 |
JP31327191 | 1991-11-01 | ||
JP3/313271 | 1991-11-01 | ||
JP11411792 | 1992-04-07 | ||
JP4/114117 | 1992-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992021581A1 true WO1992021581A1 (en) | 1992-12-10 |
Family
ID=27462601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/000700 WO1992021581A1 (en) | 1991-05-29 | 1992-05-28 | Self-standing bag and method and device for making said bag |
Country Status (8)
Country | Link |
---|---|
US (1) | US5352043A (ja) |
EP (1) | EP0541821B1 (ja) |
KR (1) | KR960016322B1 (ja) |
AU (1) | AU653606B2 (ja) |
CA (1) | CA2088249C (ja) |
DE (1) | DE69223743T2 (ja) |
ES (1) | ES2112903T3 (ja) |
WO (1) | WO1992021581A1 (ja) |
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US5501757A (en) * | 1993-07-06 | 1996-03-26 | Sumitomo Bakelite Co., Ltd. | Process for production of a bag having linear ribs |
US5549389A (en) * | 1993-03-04 | 1996-08-27 | Sumitomo Bakelite Company, Limited | Outlet stopper for pouch-type fluid containers |
US6076968A (en) * | 1996-11-26 | 2000-06-20 | The Coca-Cola Company | Easy open flexible pouch |
US6164825A (en) * | 1996-11-26 | 2000-12-26 | The Coca-Cola Company | Stable, flexible, easy open pouch |
US6293073B1 (en) | 1999-09-30 | 2001-09-25 | Cryovac, Inc. | Apparatus for forming a pouch |
JP2002128092A (ja) * | 2000-10-20 | 2002-05-09 | Dainippon Printing Co Ltd | 自立袋 |
JP2002154551A (ja) * | 2000-11-17 | 2002-05-28 | Dainippon Printing Co Ltd | 自立袋 |
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JP2014046655A (ja) * | 2012-09-04 | 2014-03-17 | Toyo Seikan Kaisha Ltd | 積層フィルムの立体成形方法およびその装置 |
JP2014080224A (ja) * | 2012-10-18 | 2014-05-08 | Toyo Seikan Kaisha Ltd | ノズル付き包装用パウチおよびその製造方法 |
JP2015037953A (ja) * | 2013-08-19 | 2015-02-26 | 東洋製罐株式会社 | 合成樹脂フィルムの接着方法、その装置および包装用パウチ |
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US5606844A (en) * | 1993-12-27 | 1997-03-04 | Sumitomo Bakelite Company, Limited | Process for producing a self-supporting package having an outlet stopper and an apparatus for producing said package |
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USD455645S1 (en) | 2000-05-26 | 2002-04-16 | Kapak Corporation | Pouch for holding liquids |
USD448988S1 (en) | 2001-02-08 | 2001-10-09 | Kapak Corporation | Stand-up pouch for holding liquids |
DE10140425C2 (de) * | 2001-08-17 | 2003-08-07 | Mars Inc | Folienbeutel |
US6767601B2 (en) * | 2001-10-09 | 2004-07-27 | Honeywell International Inc. | Multilayer laminate for use in chemical barrier packaging |
US6796996B2 (en) | 2001-12-20 | 2004-09-28 | Barbara A. Antinoro | Shape-retaining fill container |
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JP2004059132A (ja) * | 2002-07-31 | 2004-02-26 | Yoshino Kogyosho Co Ltd | 積層チューブ及び積層チューブから成るチューブ成形品 |
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JPS59162440U (ja) * | 1983-04-15 | 1984-10-31 | 藤森工業株式会社 | 自立性包装袋 |
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1992
- 1992-05-28 AU AU18853/92A patent/AU653606B2/en not_active Expired
- 1992-05-28 KR KR1019930700261A patent/KR960016322B1/ko not_active IP Right Cessation
- 1992-05-28 DE DE69223743T patent/DE69223743T2/de not_active Expired - Lifetime
- 1992-05-28 ES ES92910714T patent/ES2112903T3/es not_active Expired - Lifetime
- 1992-05-28 WO PCT/JP1992/000700 patent/WO1992021581A1/ja active IP Right Grant
- 1992-05-28 EP EP92910714A patent/EP0541821B1/en not_active Expired - Lifetime
- 1992-05-28 US US07/965,287 patent/US5352043A/en not_active Expired - Lifetime
- 1992-05-28 CA CA002088249A patent/CA2088249C/en not_active Expired - Lifetime
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5549389A (en) * | 1993-03-04 | 1996-08-27 | Sumitomo Bakelite Company, Limited | Outlet stopper for pouch-type fluid containers |
US5501757A (en) * | 1993-07-06 | 1996-03-26 | Sumitomo Bakelite Co., Ltd. | Process for production of a bag having linear ribs |
US6076968A (en) * | 1996-11-26 | 2000-06-20 | The Coca-Cola Company | Easy open flexible pouch |
US6164825A (en) * | 1996-11-26 | 2000-12-26 | The Coca-Cola Company | Stable, flexible, easy open pouch |
US6293073B1 (en) | 1999-09-30 | 2001-09-25 | Cryovac, Inc. | Apparatus for forming a pouch |
JP2002128092A (ja) * | 2000-10-20 | 2002-05-09 | Dainippon Printing Co Ltd | 自立袋 |
JP2002154551A (ja) * | 2000-11-17 | 2002-05-28 | Dainippon Printing Co Ltd | 自立袋 |
JP2002154552A (ja) * | 2000-11-17 | 2002-05-28 | Dainippon Printing Co Ltd | 自立袋 |
JP2005022741A (ja) * | 2003-07-03 | 2005-01-27 | Toppan Printing Co Ltd | スタンディングパウチ |
JP2014046655A (ja) * | 2012-09-04 | 2014-03-17 | Toyo Seikan Kaisha Ltd | 積層フィルムの立体成形方法およびその装置 |
JP2014080224A (ja) * | 2012-10-18 | 2014-05-08 | Toyo Seikan Kaisha Ltd | ノズル付き包装用パウチおよびその製造方法 |
JP2015037953A (ja) * | 2013-08-19 | 2015-02-26 | 東洋製罐株式会社 | 合成樹脂フィルムの接着方法、その装置および包装用パウチ |
Also Published As
Publication number | Publication date |
---|---|
AU1885392A (en) | 1993-01-08 |
ES2112903T3 (es) | 1998-04-16 |
KR960016322B1 (ko) | 1996-12-09 |
CA2088249C (en) | 2002-12-24 |
DE69223743T2 (de) | 1998-04-16 |
EP0541821A4 (ja) | 1995-02-15 |
CA2088249A1 (en) | 1992-11-30 |
US5352043A (en) | 1994-10-04 |
AU653606B2 (en) | 1994-10-06 |
DE69223743D1 (de) | 1998-02-05 |
EP0541821A1 (en) | 1993-05-19 |
EP0541821B1 (en) | 1997-12-29 |
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