Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including interlaminar mechanical fastener
Patent
1994-11-10
1995-11-14
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including interlaminar mechanical fastener
139383R, 139420R, 4273934, 428225, 428257, 428265, 428266, 428913, D03D 300
Patent
active
054665140
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a high-density textile fabric. More specifically, it relates to a high-density textile fabric having a small thickness and a light weight and having high tear strength and excellent water resistance performance (resistance to water pressure).
TECHNICAL BACKGROUND
A high-density textile fabric is conventionally widely used as a general clothing material or sportswear material required to be water-resistant or as a clothing material such as a quilt tick of a bedding.
In the use of sportswear in particular, the demands thereof are increasing year after year with the popularization of outdoor sports activities, and the demand for improvement in the water resistance property is increasing.
To cope with the above demands, there have been proposed various methods of increasing the density of a textile fabric by decreasing the denier of filament constituting filaments yarn or by increasing the weaving density.
For example, U.S. Pat. No. 4,548,848 discloses a high-density, water-repellent textile fabric comprising warps and wefts formed of continuous filaments yarn having a filament denier of 1.2 or less, a total of cover factors in the warp and weft directions being from 1,400 to 3,400.
Further, Japanese Laid-open Patent Publication No. 216238/1990 discloses a high-density textile fabric having a structure in which the crimp in one direction of warps and wefts is greater than that in the other, and filaments crossing at right angles with the filaments having the greater crimp are mutually overlaid one on another.
In the textile fabrics of the above two prior art documents, the weaving density of warps or wefts alone is only increased, and there is therefore a problem in that the warp/weft balance is poor and that, when said textile fabric is treated to impart it with water repellency, the so-treated textile fabric does not satisfy the practically required resistance to water pressure (1,000 mm water column) when used as a piece of water-resistant cloth.
Further, it has been said that, when the density of a textile fabric is increased, the restraint on warps and wefts is increased so that yarns do not easily slide and a tearing stress focuses on a few yarns when a tear force is exerted, and that as a result the apparent tearing strength of the textile fabric decreases (e.g., "Industrial Fiber Material Hand Book", page 24, FIG. 1-17, compiled by Japan Fiber Machinery Society, Industrial Material Research Society).
In particular, the above phenomenon clearly appears when the total denier of a constituting filaments yarn is decreased for increasing the denseness of a textile fabric, and it has been difficult to obtain a high-density textile fabric having no problem in practical tearing strength.
That is, it has not been possible to obtain any high-density textile fabric which not only retains practically acceptable tearing strength but also has high resistance to water pressure, i.e., a high-density textile fabric having both high tearing strength and high resistance to water pressure.
DISCLOSURE OF THE INVENTION
It is an object of tile present invention to overcome the above antinomy and provide a high-density textile fabric which is imparted with excellent water resistance performance without decreasing the tearing strength.
The present inventors have made diligent studies to overcome the above problem, and have found that a high-density textile fabric which is free of a decrease in tearing strength and has high resistance to water pressure can be obtained by keeping the overlaying of warps and wefts constituting the textile fabric, in a constant relationship when the high-density textile fabric is produced by weaving.
According to the present invention, there is provided a high-density textile fabric produced by arranging, as warps and wefts, identical or different continuous filaments yarn at least 40% by weight of which are formed of filaments having a filament denier of 1.1 or less and which have a total denier of 120 or less, wherein cross-sectional overla
REFERENCES:
patent: 4548848 (1985-10-01), Shibata et al.
Derwent Abstract AN 85-219581 of JP-A-60 139 847.
Aoki Kiyoshi, et al., Air-Permeable and Waterproof Cloth, Patent Abstract of Japan (JP-A-05 059633), Mar. 9, 1993.
Partial English language translation of the "Industrial Fiber Material Hand Book", edited by Industrial Fiber Material Research Society, p. 24.
Kataoka Takayuki
Kawasaki Shunzo
Shibata Fumio
Uemura Ryuji
Bell James J.
Teijin Limited
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