Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including interlaminar mechanical fastener
Patent
1993-03-29
1993-12-28
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including interlaminar mechanical fastener
28240, 28245, 28246, 139420R, 428257, D03D 300
Patent
active
052738132
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
The present invention relates to a fabric material useful for wind-filling sports equipment. More particularly, the present invention relates to a fabric material useful for wind-filling sports equipment, for example, paraglider, hangglider, yacht sail, spinnaker and stuntkite, which utilize wind, comprising a woven fabric formed as a main component, from polyester fibers and having an excellent resistance to tearing.
2. Background Art
Recently, trends involving sports activities have increased with an increase in leisure time. The activities have become multifarious and recently leisure type sports, for example, marine sports and sky sports, have become very popular.
In marine sports, yacht sails and spinnakers are used extensively, and in aerial sports, paragliders and hanggliders are popular. Both of these sports employ fiber-based fabrics.
Conventional fiber materials for sports comprise, as a main component, cotton and nylon fibers, and in the past nylon fibers have been more popular because they are light weight, have a high degree of strength and are attractive in appearance.
Generally, however, nylon fibers have an unsatisfactory resistance to weathering and dimensional stability and thus utilization of polyester fiber, which has an excellent resistance to weathering and good dimensional stability compared to nylon fibers, are gaining popularity.
Conventional fabric material produced from polyester fibers is satisfactory in terms of weight, resistance to weathering and dimensional stability, but unsatisfactory in its resistance to tearing. Therefore, when a polyester fiber fabric material is used for sports activities utilizing wind pressure, tearing of the material may occur, thereby resulting in an accident. Therefore, there is a strong demand for a polyester fiber fabric that is resistant to tearing.
DISCLOSURE OF THE INVENTION
An object of the present invention is to provide a fabric material having an excellent resistance to tearing and light in weight in addition to a superior resistance to weathering and a satisfactory dimensional stability, which are inherent properties of polyester fiber woven fabrics, and thus useful for sports equipment utilizing wind pressure, for example, paragliders, hanggliders, yacht sails, spinnakers and stuntkites. Another object of the present invention is to provide a fabric material comprising a polyester fiber woven fabric that is useful for producing sports equipments utilizing wind pressure.
The above-mentioned objects can be realized by the fabric material of the present invention, which is useful for wind-filling sports equipment, and comprises a woven fabric comprising, as a principal fiber component, polyester fibers and satisfies the following specifications (1) to (6):
In the fabric material of the present invention useful for wind-filling sports equipment, the polyester fibers also preferably satisfy the following specifications (7) to (12): fibers, DPF represents individual fiber thickness in denier of the polyester fibers, ST represents tensile strength in g/denier of the polyester fibers, EL represents ultimate elongation in % of the polyester fibers, A represents a gradient in g/denier/% of a stress-strain curve of the polyester fibers at a point at which the polyester fibers exhibit an elongation of zero, and B represents a minimum gradient in g/denier/% of a portion of the stress-strain curve of the polyester fibers in which a portion of the polyester fibers exhibits an elongation of from 0 to 4%.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a graph showing an example of a stress-strain curve of the polyester fibers usable for the present invention, and
FIG. 2 is a diagram illustrating an embodiment of the process for producing the polyester fibers from which the fabric material of the present invention is formed.
BEST MODE OF CARRYING OUT THE INVENTION
The fabric material of the present invention useful for sports equipments is formed using a woven fabric comprising, as a principal fiber component, polyes
Akamatsu Tetsuya
Takahashi Shigeru
Taniguchi Katsutoshi
Bell James J.
Teijin Limited
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