Urethane foam reinforcing material

A technology for foaming polyurethane and reinforcing materials, applied in textiles and papermaking, textiles, fabrics, etc., can solve the problems of lack of productivity, processability, mold deviation, and incorrect sewing of reinforcing materials, and achieve mold punching properties. Excellent, high productivity, effect of suppressing fricative noise

Inactive Publication Date: 2009-07-01
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reinforced material has problems of lack of productivity and workability
That is, as a process of manufacturing reinforcement materials, dozens of layers of non-woven fabrics are stacked and die-punched, and when the non-woven fabrics after die punching are hand-sewn into a desired shape, soft non-woven fabrics such as elastomers are used. For woven fabrics, the number of overlapping layers is limited when the die is punched, and the deviation of the die becomes large, and the sewing is not correct, causing problems in productivity and quality.

Method used

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  • Urethane foam reinforcing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The weight per unit area of ​​the random ring structure formed by the polyethylene terephthalate fiber of 2.5dtex manufactured according to the spunbond method is 55g / m 2 The cotton web is temporarily thermally bonded by calendering with a hot roller at 170°C to obtain a non-woven fabric A. The same spunbond method is made of polyethylene terephthalate containing 2% carbon black and made of 1.2dtex polyethylene terephthalate. The mass per unit area of ​​the random rings formed by alcohol ester fibers is 40g / m 2 The cotton web was thermally bonded by calendering with a hot roll at 200°C to obtain a nonwoven fabric B, and the thus obtained nonwoven fabric A and nonwoven fabric B were laminated using a FPD1-40S needle manufactured by Organ. , with a needle density of 50 / cm2 and a needle depth of 14 mm for needle punching to obtain a nonwoven fabric with a two-layer laminated structure. The stress at 5% elongation of nonwoven fabric A is: longitudinal=15N / 5cm, transverse=8...

Embodiment 2

[0041] In Example 1, non-woven fabric A is laminated on both sides of non-woven fabric B, using FPD1-40S needles manufactured by Organ Company, with a needle density of 50 / cm 2 1. Needle punching with a needle depth of 14 mm to obtain a non-woven fabric with a three-layer laminated structure.

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Abstract

The present invention provides a urethane foam reinforcing material, which can suppress abrasion sound generated with a metal spring, high productivity, excellent handleability, and can be applied to even a urethane foam mold having large unevenness. A urethane foam reinforcing material is characterized in that a nonwoven cloth (A) having a single yarn fineness of 1.0-3.0dtex, and a nonwoven cloth (B) having a single yarn fineness of 0.5-2.5dtex are laminated by needle punch process at a needle density of 35-70 needles / cm, by permitting needles to enter from a direction of the nonvwoven cloth (A).

Description

technical field [0001] The present invention relates to a foamed polyurethane reinforcement material used for seats, etc., and more specifically, to a foamed polyurethane that effectively protects foamed polyurethane from friction with metal springs, etc., has excellent processability, and can be applied to large uneven shapes Foamed polyurethane reinforcement for moldings. Background technique [0002] Conventionally, polyurethane foam molded products have been widely used as cushioning materials for seats, etc., and materials in which reinforcing materials are integrated during molding of polyurethane foam molded products are generally used. The reinforcing material is located between the foamed polyurethane molded body and the metal spring, and functions to protect the foamed polyurethane molded body from friction from the metal spring while evenly dispersing the cushioning effect of the metal spring. Furthermore, as consumers seek higher quality, when using seats, etc.,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16B32B5/06B32B5/24B32B5/26D04H1/46D04H1/498
CPCD04H3/105D04H3/115D04H3/14D04H1/498D04H1/559D04H1/52Y10T442/682
Inventor 神田和则寺前一弘山本俊也
Owner TOYOBO CO LTD
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