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Fibrous structure containing elastic polyurethane yarn

Pending Publication Date: 2022-01-20
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a fiber structure that has high water repellency and low water retention rate when immersed in water for an extended time. This is achieved by using elastic polyurethane yarns containing a cationic high-molecular-weight compound and an inorganic chlorine deterioration inhibitor. The yarns are treated with a water repellent finishing containing a water repellent agent and a crosslinker. The fiber structure is particularly useful for making swimwear.

Problems solved by technology

Both of the above, however, have lower water repellent performance than the fluorine-based water repellent agents containing PFOA with 8 or more carbon atoms.

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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  • Fibrous structure containing elastic polyurethane yarn

Examples

Experimental program
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Effect test

example 1

[0117]The yarn A was used as a warp yarn, and the yarn B and the yarn C were used as weft yarns to produce a plain woven fabric. The obtained woven fabric was 66% of nylon and 34% of polyurethane. The woven fabric was subjected to scouring, intermediate setting, dyeing, and drying according to ordinary methods. The obtained woven fabric was immersed in a water repellent preparation below, squeezed with a pickup of 50%, and then dried in a pin tenter set at a temperature of 130° C. Then, the woven fabric was subjected to dry heat treatment for 1 minute in the pin tenter at 170° C. to obtain a processed woven fabric (fiber structure) of Example 1. Regarding the finished density of the woven fabric, the warp density was 185 yarns / 2.54 cm, the weft density was 201 yarns / 2.54 cm, and the mass per unit area was 146 g / m2. The obtained processed fabric was a highly water repellent fiber structure having a high water repellent degree and a low water retention rate.[0118]FX-ML (fluorine-based...

example 2

[0122]A processed woven fabric (fiber structure) of Example 2 was obtained in the same manner as in Example 1, except that the yarn A and the yarn B were used as a warp yarn and a weft yarn, respectively, and the woven fabric was constituted by 66% of nylon and 34% of polyurethane. Regarding the finished density of the woven fabric, the warp density was 184 yarns / 2.54 cm, the weft density was 178 yarns / 2.54 cm, and the mass per unit area was 129 g / m2. The obtained processed fabric was a highly water repellent fiber structure having a high water repellent degree and a low water retention rate.

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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Abstract

The present invention relates to a fiber structure including an elastic polyurethane yarn. The elastic polyurethane yarn contains: 0.5 to 10 mass % of a cationic high-molecular-weight compound A having a number-average molecular weight of 2000 or more; and an inorganic chlorine deterioration inhibitor B. The mass ratio of the cationic high-molecular-weight compound A to the inorganic chlorine deterioration inhibitor B ranges from 0.3 to 3, and a silicone oil is applied to the elastic polyurethane yarn. The fiber structure is treated with water repellent finishing. The fiber structure preferably includes an elastic polyurethane yarn whose ratio of fluorine (F) to carbon (C) on the elastic polyurethane yarn is 0.030 or more in an elemental mass concentration according to scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDX). Thereby, it is possible to provide a fiber structure having high water repellency and keeping a low water retention rate when immersed in water for an extended time.

Description

TECHNICAL FIELD[0001]The present invention relates to a fiber structure including elastic polyurethane yarns, which has high water repellency and keeps a low water retention rate to resist being wetted when immersed in water.BACKGROUND ART[0002]Water and oil repellent agents containing fluorine-based compounds have been widely used to impart water repellency and oil repellency to clothing materials and industrial materials made from textiles.[0003]However, such fluorine-based water and oil repellent agents are found to contain compounds that may affect the living environment and living organisms, such as perfluorooctanoate (hereinafter PFOA) and perfluorooctane sulfonate (hereinafter PFOS). Therefore, fluorine-based water and oil repellent agents free of these compounds are demanded for textiles.[0004]It is considered that a small amount of PFOA as an impurity is mixed in the fluorine-based water repellent agents during the manufacturing process, but the mechanism is not clarified. ...

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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IPC IPC(8): D01F6/70D02G3/32D03D15/56A41D7/00
CPCD01F6/70D02G3/32D03D15/56D10B2331/10D10B2401/021D10B2401/063D10B2501/00A41D7/00D04B1/18D04B21/00D06M15/643D03D15/283D03D13/008D10B2331/04D01D1/02D01D5/04D01F1/10D02G3/328
Inventor KIMURA, CHIKATAKEDA, KEIJIKASAHARA, KEIKO
Owner TORAY IND INC
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