Flexible puncture resistant sole

a flexible, puncture-resistant technology, applied in the direction of clothing, weaving, fabrics, etc., can solve the problems of inconvenient wear, easy piercing of the sole, injuring the wearer's foot, etc., and achieve the effect of strengthening the piercing resistance function of the composite layer material and high shearing strength

Inactive Publication Date: 2006-02-02
LINEAR INT FOOTWEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The invention provides a puncture and cut resistant structure in a multi-ply sole of shoes formed of a number of woven fabric layers and alternating plies of a flexible bonding agent, such as resin, plastic or rubber adhered to each other in a composite material. Preferably the composite material can be formed by thermo compression of the woven ply and bonding agent with each other. The material for the fiber woven ply may be a high-crystallized polymer fiber of polyamide having a high shearing strength and tensile strength, for example with tensile strength being five times as strong as that of th...

Problems solved by technology

Yet, conventional shoes also have some disadvantages.
When the wearer treads on sharp-pointed articles, such as metal nails, they can easily pierce sole and injure the wearer's foot.
However, the relative rigidity and inflexibility of the metal sheet causes the wearer much inconvenie...

Method used

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Embodiment Construction

[0015] As shown in FIGS. 1-4, the present invention relates to a puncture preventive structure for the sole of footwear, comprising several woven fiber plies 1 and a layer of bonding agent such as plastic or rubber plies 2 which can be bonded by mutual thermo compression. The material for the woven fiber ply 1 is a high-crystallized polymer fiber polyamide having high shear strength and high tensile strength, for example with tensile strength five times that of a mild steel wire. The woven fiber ply 1 is woven in a common or staggered densely crisscrossed pattern, to improve the resistance to puncture by sharp-pointed articles. The woven fiber plies 1 are bonded with the bonding agent ply 2 which can be rubber or plastic preferably by thermo-compression. Through thermo compression the voids or gaps in the woven fiber ply 1 are filled and smoothed over by the infilling of the bonding agent 2, and yarns or fibers are bonded together to resist movement to strengthen the resistance to p...

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Abstract

A puncture or cut resistant protective sole for footwear made of woven fiber plies and flexible bonding agent disposed between adjacent woven fiber plies to define an alternating layered composite, wherein the flexible bonding agent penetrates into voids of each woven fiber ply and bonds fibers of each woven fiber ply to fibers within the same ply.

Description

TECHNICAL FIELD [0001] The invention relates to flexible puncture resistant sole for use in safety footwear to reduce the likelihood of injury, and particularly a flexible sole made of alternating plies of woven fabric and a flexible bonding agent material such as thermo-formable resin, rubber or plastic. BACKGROUND OF THE ART [0002] The sole of footwear worn by people nowadays is often made of resin material, such as foam rubber or plastics, and possibly leather. Due to its elastic and pliable properties, it can provide those who wear the shoes with soft and comfortable feeling. Yet, conventional shoes also have some disadvantages. When the wearer treads on sharp-pointed articles, such as metal nails, they can easily pierce sole and injure the wearer's foot. [0003] To prevent injury, some manufacturers mount a mild steel sheet or stainless steel sheet on the sole to guard against puncture or cutting injury of the foot. However, the relative rigidity and inflexibility of the metal s...

Claims

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Application Information

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IPC IPC(8): A43B13/22A43B13/12D03D15/00
CPCA43B13/12A43B13/026
Inventor HUNG, SHENG CHUNG
Owner LINEAR INT FOOTWEAR
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