Protective goods

Details Protective goods Protective goods

1998-06-04

1999-08-10

Raimund, Christopher

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Woven fabric

Woven fabric including an additional woven fabric layer

442324, 442326, 2 51, 21616, B32B 526

Patent

active

059358823

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to protective goods, more particularly to protective goods with heat-resistant, heat-insulating, anti-static and excellent wear-comfortable features, most suitable for arctic clothing, apron and glove to be used in the cold and extremely-low temperature environment and working.


BACKGROUND OF THE INVENTION

Diversification of the industrial structure has been demanding a rapid increase in the volume of working at severe low temperature and special low temperature environment; such working as electric power development, oil drilling, fire fighting and security-related work in extremely-cold season, working in the freezer and refrigerator throughout the year, as well as forestry, fishery, railway-truck maintenance and cargo-handling at harbor in winter.
Thick clothing made up of air-containing materials, for example, feather and wool is used for clothing to be used when working under the low temperature environment. Recent years have seen a development of the surface and lining clothes comprising synthetic fibers such as polyester and polyamide, combined with (hollow) synthetic fibers insulator, metallic composite sheet and synthetic foam, taking advantage of lightweight and excellent workability.
However, arctic clothing made of conventional synthetic fibers such as polyester and polyamide has no problem when used under the less severe temperature of about 5 to -5 degrees Celsius. However, these materials will be hardened under the working conditions of -10 to -15 degrees Celsius; their heat-insulation (cold-insulation) is insufficient, and long-time working is difficult. Furthermore, the feather and wool withstand the working conditions of a temperature of -20 to -30 degrees Celsius, but turn brittle below -30 degrees Celsius. The most fatal defects are heavy weight, poor workability and weak strength.
On the other hand, aramid fiber is excellent in heat-resistance, flame-retardancy and strength, and has found an extensive application in the clothing to be used by the personnel who may have to be exposed to flame. In this case, combination with other fire-retardant fiber and mixture between meta-aramid fiber and para-aramid fiber are also known.
It has not been known, however, that aramid fiber has excellent heat-insulation (cold-insulation, that is, super heat-insulation in the low temperature environment.) The aramid fiber as heat-insulator (cold-insulator) for arctic clothing has not been used in practice so far.
Furthermore, arctic clothing used under various working environments as mentioned above is required to be high-performance anti-static clothing, preventing static electricity and dust to be accumlated in order to control various problems resulting from static electricity.


SUMMARY OF THE INVENTION

The present invention is intended to solve said problems of arctic clothing and to provide arctic clothing which allows long-time working even under the low temperature environment, said arctic clothing being characterized by excellent workability, heat-insulation (cold-insulation) and anti-static feature, without being hardened and embrittled especially at low temperature of -10 degrees Celsius or below, further, at very low temperature such levels as -30 degrees Celsius or -60 degrees Celsius, furthermore even at extremely-low temperature on the level of -100 to -250 degrees Celsius.
In an effort to solve these problems, the present inventors have found out that the above problems can be solved by a combination of fibers containing aramid fiber excellent in heat-insulation (cold-insulation) and conductive yarns and/or conductive tapes. This finding has lead to the present invention.
The present invention thus provides the following embodiments of protective goods. characterized in that said composite cloth comprises a surface fabric, an intermediate fibrous-insulator and a lining fabric, mainly composed of aramid fiber, respectively, wherein by weight of 50 to 100 percent, para-aramid fiber by weight of 0 to 10 percent and other flame-retardan

REFERENCES:
patent: 4604759 (1986-08-01), Bowman et al.
patent: 4923741 (1990-05-01), Kosmo et al.
patent: 5136723 (1992-08-01), Aldridge et al.
patent: 5150476 (1992-09-01), Statham et al.
patent: 5491022 (1996-02-01), Smith
International Search Report Jan. 1998.

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