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Swimsuit

Pending Publication Date: 2022-01-27
MIZUNO CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a swimsuit that has high water repellency and low water retention rate, while also having high buoyancy. This is achieved by improving the water repellency of the elastic polyurethane yarn used in the swimsuit. This swimsuit is useful for competitive swimmers who need to swim quickly and for general swimmers who want to swim comfortably.

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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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0141]The yarn A, yarn B, and yarn C were used as a warp yarn, a weft front yarn, and a weft back yarn, respectively, to produce a stretch woven fabric 1 in which the plain weave part 2 and the weft double weave part 3 were repeated alternately as illustrated in FIG. 1. The obtained woven fabric was 66 mass % of nylon and 34 mass % 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 of Example 1. The obtained processed fabric was a highly water repellent woven fabric having a high water repellent degree and a low water retention rate.[0142]FX-ML (fluorine-based water repellent agent manufactured by K...

example 2

[0149]The yarn D and the yarn E were used as a warp yarn and a weft yarn, respectively, to produce a plain woven fabric. The woven fabric was 70% of nylon and 30% of polyurethane. The fabric was then subjected to dyeing and water repellent finishing similarly to Example 1 to produce a woven fabric with a warp density of 205 yarns / 2.54 cm, a weft density of 200 yarns / 2.54 cm, and a mass per unit area of 95 g / m2. The obtained processed fabric was a highly water repellent fabric for a swimsuit having high stretchability, excellent close fitting to the skin of a human body, a high water repellent degree, and a low water retention rate. Table 1 summarizes the results.

example 3

[0156]A men's competition swimsuit shown in FIG. 7 was produced using the woven fabric of Example 1 and the woven fabric of Example 2. A stripe part 24 of the woven fabric of Example 1 was a woven fabric in which the plain weave part and the weft double weave part were repeated alternately. The stripe part 24 was arranged along a stature direction of a human body. The woven fabric of the plain weave structure of Example 2 was a plain part 25.

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Abstract

The present invention relates to a swimsuit 23 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. A fabric for the swimsuit is treated with water repellent finishing. The swimsuit 23 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 swimsuit with high water repellency, low water retention rate, and high buoyancy.

Description

TECHNICAL FIELD[0001]The present invention relates to a swimsuit including elastic polyurethane yarns, which has high water repellency and keeps a low water retention rate for an extended time 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 n...

Claims

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Application Information

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IPC IPC(8): A41D7/00A41D31/10D06M15/643
CPCA41D7/00A41D31/10D06M15/643D06M2101/38A41D2500/20A41D2500/50A41D2500/10D01F6/94D01F6/70D01F1/10D03D15/283D03D15/47D10B2501/00D10B2331/10D10B2331/02D03D15/56D03D13/004D03D3/08D03D11/00D03D13/008D10B2331/04D02G3/32D06M2200/12D06M2200/40D02G3/38D03D15/527D03D13/00D04B1/16D04B1/18D04B1/24D10B2401/021
Inventor SUZUKI, KATSUYATANAKA, TOSHIHIROKANBAYASHI, TATSUAKIMATSUNAGA, KEIICHIROUKARASAWA, RUMIKASAHARA, KEIKOTANAKA, HIROYUKIMINAKUCHI, AI
Owner MIZUNO CORPORATION