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Nonwoven fabric laminate for foam molding, complex of urethane foam-molded body using said nonwoven fabric laminate, and method for manufacturing nonwoven fabric laminate for foam molding

A urethane, non-woven fabric technology, applied in non-woven fabrics, fabrics, textiles and papermaking, etc., can solve the problems of abnormal sound of metal springs, insufficient compactness, reduced enhancement effect, etc., to prevent abnormal sound, The effect of excellent followability and excellent heat resistance

Active Publication Date: 2014-05-07
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The nonwoven fabrics obtained by the techniques of Patent Documents 6 and 7 are nonwoven fabrics that have improved followability to the mold and save time and effort in sewing processing. Cloth is stretched, so there is a problem that the density is not sufficient and extremely thin parts are produced
In addition, if urethane foaming processing is performed as a subsequent process in this state, urethane penetration from the thin portion to the back surface may occur, resulting in a decrease in the reinforcing effect, abnormal noise with the metal spring, etc. various problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Nonwoven fabric laminate for foam molding, complex of urethane foam-molded body using said nonwoven fabric laminate, and method for manufacturing nonwoven fabric laminate for foam molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Using a pre-needling machine, polyester staple fiber mixture (containing 30% low-melting point polyester resin (PET copolymer) with a melting point of 110°C and a high-melting point polyester resin (PET homopolymer) with a melting point of 250°C) Core sheath composite fiber (“MELTY4080” manufactured by Unitika Co., Ltd., average fiber diameter 16 μm, average fiber length 51 mm. 2-component PET in Table 1.) Containing 70% of high melting point polyester resin with a melting point of 250°C A single fiber (average fiber diameter 16 μm, average fiber length 51 mm. 1 component PET in Table 1.)) was formed into a nonwoven fabric sheet to obtain a polyester staple fiber nonwoven fabric for a reinforcing layer.

[0114] As the dense layer, a commercially available polyester-based composite spunbonded long-fiber nonwoven fabric ("REEMAY (R-2 series)" circular cross-section type manufactured by FIBERWEB Co., Ltd.) The woven fabrics are stacked, interwoven and joined using a needl...

Embodiment 2～5

[0116] The mesh weight of the polyester staple fiber nonwoven fabric used for the reinforcing layer and the mesh weight of the polyester long fiber nonwoven fabric used in the dense layer were set to the mesh weight shown in Table 1, except that it was the same as in Example 1. This operation was performed to obtain a nonwoven fabric laminate for foam molding. The physical properties of the obtained nonwoven fabric laminate for foam molding were measured by the methods described above. The results are shown in Table 1.

Embodiment 6

[0118] Two layers of the same polyester long-fiber nonwoven fabric as used in Example 3 were laminated as a dense layer, and the same polyester short-fiber nonwoven fabric as in Example 1 was further laminated, interwoven and joined by a needle loom, Thus, a nonwoven fabric laminate for foam molding was obtained. The physical properties of the obtained nonwoven fabric laminate for foam molding were measured by the methods described above. The results are shown in Table 1.

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Abstract

A nonwoven fabric laminate for foam molding according to the present invention is characterized in that: a reinforcement layer is provided on at least one surface of a dense layer; the dense layer is a nonwoven fabric having a bulk density of greater than or equal to 0.1g / cm3 and comprising polyester-based long fibers that have a fiber diameter of 10 - 30[mu]m and that are fused to each other by means of melt blowing; the reinforcement layer is a nonwoven fabric comprising polyester-based short fibers that have a fiber diameter of 10 - 30[mu]m; and the laminate is obtained by a needle punch interlacing the dense layer and the reinforcement layer. The nonwoven fabric laminate for foam molding according to the present invention is capable of maintaining the density inside a seat even after heating, expansion, and shrinkage. The nonwoven fabric has superior mold-following properties during heating, expansion, and shrinkage. The nonwoven fabric laminate can be processed into complex shapes. The nonwoven fabric laminate can be processed well into shapes suitable to molds for foam-molded bodies, and the like, without cutting, and a sufficient density can be maintained on all surfaces of the nonwoven fabric laminate.

Description

technical field [0001] The present invention relates to a nonwoven fabric laminate for foam molding provided at the bottom of a foam molded article such as polyurethane, a urethane foam molded article composite using the nonwoven fabric laminate, and a foam A method for producing a nonwoven fabric laminate for molding. Background technique [0002] Foam molded products such as soft polyurethane foam are used as cushioning materials for vehicle seats and the like. For the purpose of increasing the rigidity of the foamed urethane molded product and preventing the urethane from permeating to the back, a reinforcing base fabric is provided on the bottom of such a foamed molded product. As the reinforcing base fabric, a combination of victoria muslin (cheesecloth) and slab urethane (slab urethane), or a coarse wool cloth can be used, but there are cases where the rigidity of the urethane molded product is not sufficiently improved, or cannot be sufficiently prevented. The probl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4374A47C7/20B32B5/26B32B27/36B60N2/44D04H1/435D04H1/498D04H3/011B60N2/90
CPCA47C7/20B32B5/26D04H1/435D04H1/4374D04H1/498D04H3/011B60N2/58D04H1/46D04H1/54D04H3/02D04H3/14B32B5/06B32B2262/0284B32B5/08B60N2/7017Y10T442/609B32B5/022B32B5/245B32B37/0084B32B38/04B32B2038/042B32B2262/0276B32B2266/0278B32B2307/718B32B2307/72B32B2307/726B32B2307/734B32B2367/00B32B2479/00B32B2605/003
Inventor 市川太郎
Owner MITSUI CHEM INC
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