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Nonwoven fabric and method of manufacture

A technology of non-woven fabrics and fabrics, applied in the directions of non-woven fabrics, textiles and papermaking, adhesives, etc., can solve the problems of poor hand, lack of stretch-and-recovery properties, unsatisfactory fit to the body, etc.

Inactive Publication Date: 2005-03-23
DUPONT TORAY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such fabrics may have an unattractively heavy feel and may have a poor, sticky hand
Nonwoven fabrics comprising crimped fibers are also disclosed, such as US Patent US5102724 and published Japanese Patent Applications JP02-091217 and JP05-171555, but they may have poor and anisotropic stretch and recovery properties
Both of these deficiencies may render prior art nonwoven fabrics unsatisfactory for direct skin contact, for example in the case of diapers
[0003] Cross-laid carded webs have been used to make products with similar machine and cross direction properties, such as disclosed in International Patent Application WO00 / 63478 and published Japanese Patent Applications JP08-260313 and JP11-061617, but such operations add cost , and the fabric may be thick and may have poor hand, low flexibility, and / or poor stretch and recovery properties
[0004] Laminates of nonwoven webs and elastic materials have also been disclosed, such as published Japanese patent application JP08-188950, but such fabrics can also be unevenly thick and have low compliance, making them unsatisfactory body fit
[0005] Nonwoven fabrics comprising binder fibers have also been disclosed, for example US Pat.

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 and method of manufacture
  • Nonwoven fabric and method of manufacture
  • Nonwoven fabric and method of manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The elastic fiber used is spandex (Lycra T-127C, registered trademark of DuPont-Toray Co., Ltd.), which has a linear density of 7 dtex per filament, a fiber length of 6 mm and a softening temperature of about 180° C. temperature. The latent crimp fiber is a poly(ethylene terephthalate)+poly(ethylene terephthalate) copolymer bicomponent fiber (T81, manufactured by Unitika Fiber Co., Ltd.), which has a score of 1.7 A linear density per filament, a fiber length of 5 millimeters and a crimp development temperature of at least about 140°C. The binder is a sheath of poly(ethylene terephthalate) and poly(ethylene terephthalate-co-isophthalate) (30% isophthalate)- Core binder fiber ("Melty" 4080, manufactured by Unitika Fiber Co., Ltd.) having a linear density of 1.1 decitex per filament, a fiber length of 3 mm, and a sheath melting temperature of about 110°C.

[0042] 5 weight percent spandex, 65 weight percent latent crimp polyester fibers, and 30 weight percent polyester s...

Embodiment 2

[0045] A nonwoven fabric was produced under the same conditions as in Example 1, except that the proportion of spandex was 10% by weight and the proportion of latent crimped polyester fibers was 60% by weight. The properties of the obtained fabric are shown in Table 1.

Embodiment 3

[0047] A nonwoven fabric was produced under the same conditions as in Example 1, except that the proportion of spandex was 20% by weight and the proportion of latent crimped polyester fibers was 50% by weight. The properties of the obtained fabric are shown in Table 1.

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Abstract

The invention provides a nonwoven fabric having isotropic recovery from extension of at least about 55 % and comprising a binder, about 3 to 50 weight percent bare elastomeric staple fibers based on weight of the fabric, and crimped staple bicomponent fibers.

Description

technical field [0001] This invention relates to stretch nonwoven fabrics, and more particularly to such fabrics comprising elastic fibers, binders (especially binder fibers) and crimped fibers. Background technique [0002] Nonwoven fabrics comprising elastic polyurethane and polyetherester fibers have been disclosed, for example US Patent 5238534 and published Japanese Patent Applications JP43-026578, JP03-019952 and JP10-025621. However, such fabrics may have an unattractively heavy feel and may have a poor, tacky hand. Nonwoven fabrics comprising crimped fibers are also disclosed, eg US Patent US5102724 and published Japanese Patent Applications JP02-091217 and JP05-171555, but they may have poor and anisotropic stretch and recovery properties. Both of these deficiencies may make the nonwoven fabrics of the prior art unsatisfactory for direct skin contact, for example in the case of diapers. [0003] Cross-laid carded webs have been used to make products with similar m...

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): D04H1/06D04H1/4374D04H1/4391D04H1/541
CPCD04H1/42D04H1/58D04H1/435D04H1/4358D04H1/542
Inventor K·特拉塔Y·卡吉亚Y·马基塔
Owner DUPONT TORAY CO LTD