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Novel fibers, high airtightness fabrics and a fabrication method thereof

a fabric and airtight technology, applied in the field of new fibers and high airtight fabrics, can solve the problems of environmental pollution and fabric fabric airtightness, and achieve the effect of increasing the windproof performance of the fabri

Inactive Publication Date: 2007-04-05
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] By the nature of the tetragon cross section, the fibers can be arranged with minimal interstices in the fabricated fabrics to achieve the objective of high airtightness. Futhermore, the production is straightforward, using no polluting coating and therefore potentially low-cost as compared to the prior arts.
[0011] Another objective of the present invention is to provide a fabric made of the tetragonal fiber that may be used in the production of airbag, safety belt, tent, and other industrial products requiring high airtightness or fabric density.
[0016] The present invention presents a novel method of producing a tetragonal non-hollow fiber by the design of a special contour-shaped nozzle hole and the design of a shortened air-blocked zone in the spinning duct. The shape of the fiber thereof differs from the round or elliptical shape of traditional fibers. The fiber with a tetragon cross section of the present invention yields a denser fabric construct than traditional fibers with round cross sections in the weaving process; hence the airtightness and thus the windproof performance of the fabrics increase. In summary, the tetragon fiber, fabrics thereof and the manufacturing method of the present invention present a new technology of making airtight fabrics to reach a performance level which has not been achieved before by noncoated fabrics. These high performance airtight fabrics are suitable for many apparel and industrial applications.

Problems solved by technology

As the descriptions above, the prior technology of fabricating airtight fabrics usually adopts resin coating and have environmental pollution problems.

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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  • Novel fibers, high airtightness fabrics and a fabrication method thereof
  • Novel fibers, high airtightness fabrics and a fabrication method thereof
  • Novel fibers, high airtightness fabrics and a fabrication method thereof

Examples

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example 1

Fabrication of Square Fibers Used for the Production of High Airtightness Fabrics

[0031] With the method of the present invention, Nylon 66 chips of RV 100 is charged into an extruder, heated and melted at 290° C. and extruded, at a rate of 72 g / min, from a special contoured nozzle to form molten polymer threads of tetragonal cross section; The molten filaments are passed through an air-cooling zone, in which air is blocked for a length of 5 cm at the upper part of the zone; a quenching air of 0.7 m / sec is blown at the rest of the cooling zone. The molten filaments are solidified and sprayed with finish oil to achieve a dynamic coefficient of friction of 0.35 (F / Uμd) at the location of 150 cm below the exit of the spinning nozzle. The solidified tetragon filaments are fed into a heated roller set and drawn at a ratio of 5.0. The winding tension of the filaments is controlled around 0.15 g / d, and the winding speed is set at 3200 m / min. The fiber obtained has a tenacity of 8.3 g / denie...

example 2

Preparation of High Airtightness Fabric with the Fibers of Present Invention

[0033] The square fiber obtained in Example 1 is used to produce woven fabrics to investigate its effect on air permeability. Two weaving densities have been adopted in the construction of the fabrics: 49 and 55 threads / inch for both the warp and the weft directions. The first part of the experiments uses the square fiber to investigate the effect of the square fiber on air permeability as the weft yarn only. The second part of the experiments employs the square fiber in both the weft and the warp directions to fully exploit the effect of the square fiber on airtightness. In construction of the first part, Du Pont's T725 420d / 68f M1V297 industrial yarn, which is of round cross section, is used for the warp; the square fiber obtained in Example 1 and Du Pont's round fiber, same as the warp, are used for the weft. The content of the fibers in the fabrics is therefore roughly 50% round fiber and 50% square fi...

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 provides a new tetragon fiber and a method for fabricating the same. The present invention includes: heating a thermoplastic material, extruding it from a tetragon-shaped nozzle, passing it through an airless zone, then cooling and solidifying to form threadlike substances, rolling up then processing the threadlike substances to form fibers with tetragon cross sections. The fabrics of present invention comprises a property of fine air-tightness.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a novel fiber, high airtightness fabrics and a fabricating method, more particularly a fabricating method for a tetragon fiber and fabrics made of the tetragon fiber. The present invention provides high airtightness fabrics by compact arrangement of the tetragon fibers. [0003] 2. Description of the Related Art [0004] High airtightness fabrics have been used extensively in clothing-related products such as waterproof, windproof, and warmth-retention fabrics. Industrial applications of high airtightness fabrics include the leisure articles, packing materials, shoes materials, conveying belts, automobile airbags and other textile products. In general, the fibers used in air-tight fabrics must be able to yield high degrees of compaction and thus low interstices among the fibers to lower the air permeability. [0005] Conventional man-made fibers typically have round cross sections. These r...

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): D04H1/00D04H13/00D02G3/00
CPCD01D5/253D04H1/42D04H1/4291D04H1/4334Y10T428/2973D04H1/4391D04H3/02D04H3/16D04H1/435Y10T442/611Y10T442/609D04H1/43912
Inventor CHEN, LIEN TAIHSIAO, KAI JENCHENG, SHU HUIJUE, ZHI FENG
Owner IND TECH RES INST
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