WO2008066314A1 - Laminated acoustic absorption sheet with frame retardant - Google Patents
Laminated acoustic absorption sheet with frame retardant Download PDFInfo
- Publication number
- WO2008066314A1 WO2008066314A1 PCT/KR2007/006039 KR2007006039W WO2008066314A1 WO 2008066314 A1 WO2008066314 A1 WO 2008066314A1 KR 2007006039 W KR2007006039 W KR 2007006039W WO 2008066314 A1 WO2008066314 A1 WO 2008066314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laminated
- weight
- sheet
- polyester
- fibers
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 42
- 239000000835 fiber Substances 0.000 claims abstract description 40
- 229920000728 polyester Polymers 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 238000002844 melting Methods 0.000 claims abstract description 25
- 230000008018 melting Effects 0.000 claims abstract description 25
- 239000012510 hollow fiber Substances 0.000 claims abstract description 21
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 17
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- -1 polyethylene Polymers 0.000 claims abstract description 14
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims abstract description 5
- 229920001155 polypropylene Polymers 0.000 claims abstract description 5
- 239000004677 Nylon Substances 0.000 claims abstract description 4
- 229920001778 nylon Polymers 0.000 claims abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 238000009739 binding Methods 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 235000010981 methylcellulose Nutrition 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 10
- 230000000704 physical effect Effects 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000007799 cork Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 229920001821 foam rubber Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
Definitions
- acoustic absorption materials As a result of recent accelerated industrial development, serious damage due to noise has been increased. Thus, various acoustic absorption materials had been developed, and wasted tire chips, cork and foam rubber was mainly used as the conventional acoustic absorption materials . These acoustic absorption materials are low-priced and eco-friendly, but have some disadvantages that they have a non-uniform filled thickness and a slow working speed and also a crack may be generated. Further, in case of the cork or the foam rubber, they have a uniform filled thickness and an excellent constructability, but also have some disadvantages that they have a complicated working process and a separated gap and also the crack may be generated.
- the present invention is provided to solve the problems .
- a light plate material is prepared and then immersed in the liquid frame retardant so as to obtain a frame retardant effect.
- An object of the present invention is to provide a light laminated acoustic absorption sheet which is manufactured by immersing a light acoustic absorption sheet in the liquid frame retardant .
- the present invention since special structural fibers such as hollow fibers and interlaced-textured yarns which can contain air therein are used so as to form a three-dimensional network having a multi- layered bulky structure, it is possible to manufacture the light laminated sheet having a fine porous layer. Furthermore, since two kinds of fibers having a different denier within a certain extent are used, pores are formed between the fibers, thereby realizing a light weight, an excellent strength and excellent acoustic absorption ability and adiabaticity of the laminated sheet .
- a content of the thermoplastic fibers having a low melting point is 30 ⁇ 95 weight%.
- the content is less than 30 weight %, it is not possible to obtain the sufficient light weight, acoustic absorption ability and adiabaticity .
- the content is more than 95 weight %, it is not possible to obtain the sufficient light weight.
- the polyester interlaced-textured yarns (b) means mixed yarns in which the polyester hollow fibers and high shrinkable polyester fibers having a boiling water shrinkage of 10 ⁇ 50% are supplied at the same time and then knotted by air from an interlace nozzle so that the two fibers are combined. And it is not matter that the polyester hollow fiber as a raw fiber is partially or completely oriented, but it is preferable that the polyester hollow fiber is partially oriented so as to largely reveal a difference in the shrinkage with respect to the high shrinkable polyester fibers and thus emboss the bulky structure.
- the polyester interlaced-textured yarn of the present invention there is disclosed a manufacturing method thereof in Korean Laid-Open Publication No.10-2004-0049035.
- the thermoplastic resin fiber can be infiltrated into the tangled reinforcing fibers, and the melted laminated mat is pressed by pressing rollers provided in a pressing zone so as to have a desired thickness.
- the preheating, heat-binding, pressing, cooling and cutting processes also can be changed according to the apparatus .
- the parameters such as temperature, pressure and the like also can be changed, they are not limited especially in the present invention.
- Three sheets of mats are laminated and fastened by needle punching and then pressed to have a thickness of 20mm.
- the laminated mats are supplied to an apparatus of manufacturing a stampable sheet and passed through rollers, which are respectively preheated at 170 ° C, 200 ° C and 230 ° C, at a speed of 8M/min so as to prepare a sheet having a thickness of 7mm.
- the sheet is passed through a water cool zone of 50°C at a speed of 8M/min and again passed through a water cool zone of 30 ° C at a speed of 8M/min so as to manufacture a final laminated sheet having a thickness of 5mm.
Abstract
The present invention relates to a light laminated acoustic absorption sheet. The light laminated acoustic absorption sheet with frame retardant is characterized in that one or more thermoplastic fibers (a) having a low melting point and selected from polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymers, and one or more polyester interlaced- textured yarns or thermoplastic hollow fibers (b) having a higher melting point than the thermoplastic fiber (a) and selected from polyester, polyethylene, nylon, hot-meltable fluororesin are mixed and opened so as to prepare a mat, and two or more sheets of mats are laminated by using an apparatus of manufacturing a stampable sheet so as to manufacture the laminated sheet, and then the laminated sheet is impregnated with frame retardant liquid.
Description
LAMINATED ACOUSTIC ABSORPTION SHEET WITH FRAME RETARDANT
[Technical Field]
The present invention relates to a light laminated acoustic absorption sheet, more particularly, to a laminated acoustic absorption sheet with frame retardancy, which has an excellent strength and a mechanical or physical property.
[Background Art]
As a result of recent accelerated industrial development, serious damage due to noise has been increased. Thus, various acoustic absorption materials had been developed, and wasted tire chips, cork and foam rubber was mainly used as the conventional acoustic absorption materials . These acoustic absorption materials are low-priced and eco-friendly, but have some disadvantages that they have a non-uniform filled thickness and a slow working speed and also a crack may be generated. Further, in case of the cork or the foam rubber, they have a uniform filled thickness and an excellent constructability, but also have some disadvantages that they have a complicated working process and a separated gap and also the crack may be generated.
Therefore, there have been developed various acoustic absorption materials like an acoustic absorption board made of
polyester fiber, or made by foaming resin such as urethane, polypropylene, polyethylene and the like.
However, in case of the acoustic absorption material made of polyester fiber, if liquid frame retardant is added to manufacture an acoustic absorption material having frame retardancy, there are some problems that, since a weight of the acoustic absorption material is considerably increased, it is inconvenient to convey it and also it is difficult to carry out a construction work.
[Disclosure] [Technical Problem]
Therefore, the present invention is provided to solve the problems . In order to prevent the increase in the weight of the acoustic absorption material, even through the liquid frame retardant is impregnated therein, a light plate material is prepared and then immersed in the liquid frame retardant so as to obtain a frame retardant effect.
An object of the present invention is to provide a light laminated acoustic absorption sheet which is manufactured by immersing a light acoustic absorption sheet in the liquid frame retardant .
Another object of the present invention is to provide a light laminated acoustic absorption sheet which has an
excellent strength and a mechanical or physical property.
[Technical Solution]
The present invention is directed to a light laminated acoustic absorption sheet with frame retardant, wherein one or more thermoplastic fibers (a) having a low melting point and selected from polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymers, and one or more polyester interlaced-textured yarns or thermoplastic hollow fibers (b) selected from polyester, polyethylene, nylon, hot- meltable fluororesin are mixed and opened so as to prepare a mat, and two or more sheets of mats are laminated by using an apparatus of manufacturing a stampable sheet so as to manufacture the laminated sheet, and then the laminated sheet is impregnated with frame retardant liquid.
According to the present invention, in case that 10 ~ 20 denier fibers of 20 ~ 95 weight% and 2 - 7 denier fibers of 5 ~ 80 weight% mixed, it is possible to obtain a light weight and an improved strength.
Further, according to the present invention, since special structural fibers such as hollow fibers and interlaced-textured yarns which can contain air therein are used so as to form a three-dimensional network having a multi- layered bulky structure, it is possible to manufacture the
light laminated sheet having a fine porous layer. Furthermore, since two kinds of fibers having a different denier within a certain extent are used, pores are formed between the fibers, thereby realizing a light weight, an excellent strength and excellent acoustic absorption ability and adiabaticity of the laminated sheet .
Preferably, the mat is manufactured by using thermoplastic resin fibers of 30 ~ 95 weight%, which has a low melting point, and polyester interlaced-textured yarns or thermoplastic resin hollow fibers of 5 ~ 70 weight%, which has a high melting point.
Further, the laminated acoustic absorption sheet has preferably one or more laminated sheets of mats, more preferably, 2 - 4 laminated sheets of mats so as to increase the acoustic absorption ability and adiabaticity. And if necessary, another sheet made of wood, metal, paper and the like can be added to one or both sides of the acoustic absorption sheet, and also UV coating can be applied or a pattern can be printed.
According to the present invention, if the thermoplastic fibers (a) having a low melting point is an ordinary one that is used in the art, it is not limited specially. However, the thermoplastic fibers (a) is selected preferably from polyethylene, polypropylene, polyvinyl chloride, polyester,
polyethylene-polyester copolymers, and more preferably has a melting point of 80 ~ 120°C .
According to the present invention, preferably, a content of the thermoplastic fibers having a low melting point is 30 ~ 95 weight%. In case that the content is less than 30 weight %, it is not possible to obtain the sufficient light weight, acoustic absorption ability and adiabaticity . Also, in case that the content is more than 95 weight %, it is not possible to obtain the sufficient light weight.
According to the present invention, the thermoplastic hollow fibers (b) are respectively formed to have a hollowed space therein. Preferably, the thermoplastic hollow fibers have thermal endurance of 200 °C or more, more preferably, 200 ~ 280°C. The thermal endurance is a glass transition temperature or a melting temperature (melting point) . When using such the hollow fibers, since the hollowed space formed in the hollow fibers has a higher thermal endurance than the thermoplastic fibers having a low melting point even while passing through the apparatus of manufacturing the stampable sheet, the hollowed space is be maintained and thus it is possible to increase the acoustic absorption ability and adiabaticity. For example, the hollow fibers can be selected from polyester, polyethylene, nylon, hot-meltable fluororesin. The hollowed space may have any shapes such as a circular shape, a
triangular shape and the like. The hot-meltable fluororesin may comprise tetrafluoroethylene-hexafluoropropylene copolymer
(FEP) , tetrafluoroethylene-perfluoroakyl vinyl ether copolymer
(PFA) , tetrafluoroethylene- hexafluoropropylene- perfluoroakyl vinyl ether copolymer (EPA) , tetrafluoroethylene-ethylene copolymer (ETFE) and the like. By using such the hollow fibers, it is possible to obtain the excellent acoustic absorption ability and adiabaticity due to the hollowed space.
Furthermore, the polyester interlaced-textured yarns (b) means mixed yarns in which the polyester hollow fibers and high shrinkable polyester fibers having a boiling water shrinkage of 10 ~ 50% are supplied at the same time and then knotted by air from an interlace nozzle so that the two fibers are combined. And it is not matter that the polyester hollow fiber as a raw fiber is partially or completely oriented, but it is preferable that the polyester hollow fiber is partially oriented so as to largely reveal a difference in the shrinkage with respect to the high shrinkable polyester fibers and thus emboss the bulky structure. As an example of the polyester interlaced-textured yarn of the present invention, there is disclosed a manufacturing method thereof in Korean Laid-Open Publication No.10-2004-0049035. According to the present invention, it is possible to manufacture the lighter sheet having the bulky structure by using the polyester interlaced-
textured yarn. Further, the interlaced-textured yarn has preferably thermal endurance of 200°C or more, more preferably, 200 ~ 280°C .
The thermoplastic hollow fibers and the polyester interlaced-textured yarn may be used selectively or mixed together. It is preferable that the content is 5 ~ 70 weight%. If the content is less than 5 weight%, it is not possible to obtain the sufficient light weight, acoustic absorption ability and adiabaticity. And if the content is more than 70 weight%, a manufacturing cost is increased.
In addition, according to the present invention, it is possible to control the physical properties of the laminated sheet by selectively using a denier of the fiber. Particularly, it is preferable that the sheet is fabricated by mixing 10 ~ 20 denier fibers of 20 ~ 95 weight% and 2 - 7 denier fibers of 5 - 80 weight%, it is more preferably that 10 - 20 denier polyester interlaced-textured yarns or thermoplastic hollow fibers (b) having a high melting point and 2 - 7 denier thermoplastic fibers (a) having a low melting point are mixed.
The 10 - 20 denier fiber functions as an iron reinforcing bar in the concrete casting, and the 2 ~ 7 denier fiber functions to form the hollowed space, and thus it is possible toy obtain the excellent acoustic absorption ability and adiabaticity.
According to the present invention, the reason why the fibers are limited to the 10 ~ 20 denier and the 2 - 7 denier is caused by that it is possible to obtain the excellent acoustic absorption ability and adiabaticity as well as the sufficient strength. The reason why the extent of content is limited is the same.
In other words, according to the present invention, it is possible to freely manufacture the laminated sheet by adjusting the deniers and kinds of the fibers.
Also, the frame retardant liquid is not limited especially in the present invention, and thus the frame retardant liquid may comprise phosphoric frame retardant, halogen frame retardant and the like. Also, the the frame retardant liquid may be prepared by mixing sodium silicate of 10 ~ 50 parts by weight with respect to a mixed solution of 100 parts by weight in which methyl cellulose of 20 ~ 40 weight%, boric acid of 10 ~ 15 weight%, borax of 5 ~ 10 weight%, sodium hydroxide of 0.01 ~ 1 weight%, triphenyl phosphate of 1 ~ 10 weight%, and water of 40 ~ 60 weight% are mixed.
According to the present invention, there is provided a method of manufacturing a light laminated acoustic absorption sheet with frame retardant, comprising the steps a) mixing thermoplastic resin fiber (a) having a low melting point and
polyester interlaced-textured yarn or thermoplastic resin hollow fiber (b) having a high melting point and then opening; b) passing the mixed/opened fibers through a carding machine so as to prepare a mat; c) laminating two or more sheets of the mats; d) fastening the laminated mats by needle punching; e) supplying the laminated sheet to an apparatus of manufacturing a stampable sheet, which is provided with a plate type conveyer belt having a plurality of through-holes, and preheating the laminated sheet so that hot wind is transferred through the through-holes to an inside of the mat, and then heat-binding, pressing, cooling and cutting the laminated mat melted by the hot wind; and f) immersing the laminated mat in frame retardant liquid which is stored in a reaction bath and then drying.
In other words, since the laminated mat is passed through the preheating zone of the apparatus of manufacturing the stampable sheet and then divided and melted, the thermoplastic resin fiber can be infiltrated into the tangled reinforcing fibers, and the melted laminated mat is pressed by pressing rollers provided in a pressing zone so as to have a desired thickness. At this time, since the processes of the apparatus of manufacturing the stampable sheet can be changed, the preheating, heat-binding, pressing, cooling and cutting processes also can be changed according to the apparatus .
Further, since the parameters such as temperature, pressure and the like also can be changed, they are not limited especially in the present invention.
Some examples of the apparatus of manufacturing the stampable sheet are disclosed in Korean patent No. 10-2006- 0099597 and 10-2006-0103752.
[Advantageous Effects]
According to the present invention, even in case that the multiple mats are laminated by the plate type conveyer belt having a plurality of through-holes, the hot wind can be transferred through the through-holes to the inside of the mat, and thus the laminated mats can be adhered with excellent adhesive force and also have an improved strength.
[Best Mode]
Hereinafter, the embodiment of the present invention will be described. However, the present invention will not be limited to the embodiment.
In the embodiment, the acoustic absorption sheet, which is prepared by materials having following physical properties, is used.
- polyester interlaced-textured yarn, which is fabricated by interlacing polyester partially-oriented hollow filament
and highly shrinkable polyester filament having a boiling water shrinkage of 30% at a speed of 400m/minute and a pressure of 3 bar, is used.
- frame retardant liquid, which is prepared by mixing sodium silicate of 50 parts by weight with respect to a mixed solution of 100 parts by weight in which methyl cellulose of 30 weight%, boric acid of 12 weight%, borax of 8 weight%, sodium hydroxide of 0.5 weight%, triphenyl phosphate of 8.5 weight%, and water of 41 weight% are mixed.
Embodiment
Manufacturing of 3 -layer laminated sheet with a single kind of mat
5 denier polyester fiber (melting temperature of 110°C) of 45 weight% and 15 denier polyester interlaced-textured yarn (melting temperature of 245°C) of 55 weight% are mixed and opened, and then passed through a cylindrical carding machine so as to prepare a mat .
Three sheets of mats are laminated and fastened by needle punching and then pressed to have a thickness of 20mm. The laminated mats are supplied to an apparatus of manufacturing a stampable sheet and passed through rollers, which are respectively preheated at 170°C, 200°C and 230°C, at a speed of
8M/min so as to prepare a sheet having a thickness of 7mm. Then, the sheet is passed through a water cool zone of 50°C at a speed of 8M/min and again passed through a water cool zone of 30°C at a speed of 8M/min so as to manufacture a final laminated sheet having a thickness of 5mm.
The manufactured laminated sheet is sufficiently- immersed in the frame retardant liquid and then dried at 130°C for 30 minutes. Table 1 shows physical properties of the manufacture acoustic absorption sheet. Table 1
As shown in Table 1, the laminated acoustic absorption sheet of the present invention can be manufacture so as to have a light weight. Further, since the laminated acoustic absorption sheet has excellent frame retardancy as well as excellent mechanical or physical property, it can be used as a building interior sheet.
Those skilled in the art will appreciate that the conceptions and specific embodiments disclosed in the foregoing description may be readily utilized as a basis for modifying or designing other embodiments for carrying out the same purposes of the present invention. Those skilled in the art will also appreciate that such equivalent embodiments do not depart from the spirit and scope of the invention as set forth in the appended claims.
[industrial Applicability]
According to the present invention as described above, since thermoplastic resin fiber having a low melting point and thermoplastic resin hollow fiber having a high melting point
or polyester interlaced-textured yarn is mixed at a desired rate, the laminated acoustic absorption sheet has a light weight as well as excellent mechanical or physical property. Further, since the eco-friendly frame retardant liquid is impregnated therein, it can be used as a building interior sheet having excellent frame retardancy.
Claims
[CLAIMS]
[Claim l]
A light laminated acoustic absorption sheet with frame retardant, wherein one or more thermoplastic fibers (a) having a low melting point and selected from polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene- polyester copolymers, and one or more polyester interlaced- textured yarns or thermoplastic hollow fibers (b) having a higher melting point than the thermoplastic fiber (a) and selected from polyester, polyethylene, nylon, hot-meltable fluororesin are mixed and opened so as to prepare a mat, and two or more sheets of mats are laminated by using an apparatus of manufacturing a stampable sheet so as to manufacture the laminated sheet, and then the laminated sheet is impregnated with frame retardant liquid.
[Claim 2]
The light laminated acoustic absorption sheet with frame retardant according to claim 1, wherein the mat is manufactured by using thermoplastic resin fibers of 30 ~ 95 weight%, which has a low melting point of 80 ~ 120°C, and polyester interlaced-textured yarns or thermoplastic resin hollow fibers of 5 ~ 70 weight%, which has a high melting point of 200 ~ 280 °C.
[Claim 3 ]
The light laminated acoustic absorption sheet with frame retardant according to claim 2, wherein the polyester interlaced-textured yarn is prepared by interlacing polyester hollow fibers and high shrinkable polyester fibers.
[Claim 4]
The light laminated acoustic absorption sheet with frame retardant according to claim 3, wherein the mat is mixed with 10 - 20 denier fibers of 20 ~ 95 weight% and 2 ~ 7 denier fibers of 5 ~ 80 weight%.
[Claim 5]
The light laminated acoustic absorption sheet with frame retardant according to any one of claims 1 to 4, wherein the frame retardant liquid is prepared by mixing sodium silicate of 10 ~ 50 parts by weight with respect to a mixed solution of 100 parts by weight in which methyl cellulose of 20 ~ 40 weight%, boric acid of 10 ~ 15 weight%, borax of 5 ~ 10 weight%, sodium hydroxide of 0.01 ~ 1 weight%, triphenyl phosphate of 1 ~ 10 weight%, and water of 40 ~ 60 weight% are mixed.
[Claim 6]
A method of manufacturing a light laminated acoustic absorption sheet with frame retardant, comprising the steps: a) mixing thermoplastic resin fiber (a) having a low melting point of 80 ~ 120°C and polyester interlaced-textured yarn or thermoplastic resin hollow fiber (b) having a high melting point of 200 ~ 280"C and then opening; b) passing the mixed/opened fibers through a carding machine so as to prepare a mat; c) laminating two or more sheets of the mats,- d) fastening the laminated mats by needle punching; e) supplying the laminated sheet to an apparatus of manufacturing a stampable sheet, which is provided with a plate type conveyer belt having a plurality of through-holes, and preheating the laminated sheet so that hot wind is transferred through the through-holes to an inside of the mat, and then heat-binding, pressing, cooling and cutting the laminated mat melted by the hot wind; and f) immersing the laminated mat in frame retardant liquid which is stored in a reaction bath and then drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/516,707 US7984788B2 (en) | 2006-11-29 | 2007-11-27 | Laminated acoustic absorption sheet with flame retardant |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060119379A KR100824703B1 (en) | 2006-11-29 | 2006-11-29 | Laminated acoustic absorption sheet with frame retardant |
| KR10-2006-0119379 | 2006-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008066314A1 true WO2008066314A1 (en) | 2008-06-05 |
Family
ID=39468058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2007/006039 WO2008066314A1 (en) | 2006-11-29 | 2007-11-27 | Laminated acoustic absorption sheet with frame retardant |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7984788B2 (en) |
| KR (1) | KR100824703B1 (en) |
| WO (1) | WO2008066314A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120885A1 (en) * | 2012-02-14 | 2013-08-22 | Groz-Beckert Kg | Fibrous material part and process for the production thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4504457B1 (en) * | 2009-07-28 | 2010-07-14 | 株式会社フジクラ | Laminated sheet for sealing dye-sensitized solar cell and method for producing dye-sensitized solar cell using the same |
| KR100939960B1 (en) | 2009-09-02 | 2010-02-04 | (주) 비앤비 | Preparation method for a patterned fiber board with anti-heat shrinkable characteristics |
| US8434591B2 (en) | 2011-09-21 | 2013-05-07 | Robert Bosch Gmbh | Acoustic barrier |
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Also Published As
| Publication number | Publication date |
|---|---|
| US7984788B2 (en) | 2011-07-26 |
| KR100824703B1 (en) | 2008-04-24 |
| US20100108439A1 (en) | 2010-05-06 |
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