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Outer soles and shoes

An olefin-based resin and polymer technology, which is applied to the outsole of shoes and the field of shoes, can solve the problem of insufficient wear resistance of the ground layer, and achieve the effects of inhibiting shedding, excellent wear resistance, and inhibiting damage

Inactive Publication Date: 2010-03-24
ASICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] On the other hand, the Shore A hardness of the contact layer of the outsole of Patent Document 2 is 55 to 95, but only when the hardness of the contact layer is set relatively high, the wear resistance of the contact layer is not sufficient, and it is necessary to improve the wear resistance of the contact layer. its improved

Method used

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  • Outer soles and shoes
  • Outer soles and shoes
  • Outer soles and shoes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] PE, PP, and αSBS were blended at the ratios shown in Table 1, mixed sufficiently with a mixer, and then kneaded with a twin-screw extruder (180-230° C.) to prepare a polymer composition. The specific gravity (20°C±3°C) of the polymer composition is shown in Table 1. In addition, in Table 1, the compounding ratio of each material is shown by mass parts.

[0102] Use an injection molding machine (manufacturer: Nissei Plastic Industry Co., Ltd., trade name: FE160S type hydraulic injection molding machine. Clamping force: 160ton, screw diameter: 45mm, injection speed: 21cm 3 / s, injection pressure: 60 MPa, injection temperature (nozzle part): 230°C), the above polymer composition was injected into a metal mold to prepare samples for physical property test and wear test.

[0103] The above-mentioned samples for physical property tests are used for measurement of specific gravity, measurement of dynamic viscoelasticity, and measurement of tensile strength. The sample for th...

Embodiment 2～ Embodiment 5

[0110] Except that PE, PP, and αSBS were blended in the proportions shown in Table 1, samples for physical property tests and samples for wear tests were prepared in the same manner as in Example 1 above. Table 1 shows the specific gravity (20°C±3°C) of each polymer composition of Examples 2 to 5.

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Abstract

The present invention provides an outer sole light in weight and excellent in abrasion resistance. The outer sole of the present invention is formed out of a polymer composition with a specific gravity of 0.95 or less, which contains an olefin resin and a styrene elastomer, wherein a storage elastic modulus ¢E'! and a loss coefficient ¢tan delta! in a dynamic viscoelasticity measurement (20+-3 DEGC, 10 Hz) are 100 MPa to 500 MPa and 0.2 or less respectively, and a maximum tensile stress is 30 MPa or more. The olefin resin contains an ethylene polymer and a propylene polymer, for example. Thestyrene elastomer contains an +--methyl styrene butadiene copolymer, for example. A flaw is hardly occurred on the outer sole in use, so that the outer sole is excellent in abrasion resistance.

Description

technical field [0001] The present invention relates to shoe outsoles and shoes. Background technique [0002] The outsole of various shoes such as sports shoes is a bottom member that comes into contact with the ground. The outsole is required to be hard to wear (abrasion resistance) and light in weight. [0003] Patent Document 1 (Japanese Laid-Open Patent Publication No. Hei 11-266905) describes an outsole in which a lightweight foam having a specific gravity of 0.8 or less and a high-strength non-foam are opposed to each other and integrated. According to Patent Document 1, the outsole is excellent in wear resistance and light in weight because a high-strength non-foamed body is disposed at a portion requiring wear resistance and a lightweight foam is disposed at another portion. [0004] Patent Document 2 (Japanese Laid-Open Patent Publication No. 2007-29320) discloses an outsole having a grounding layer with a Shore A hardness of 55 to 95 and a specific gravity of 1....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A43B13/04
CPCA43B13/26A43B13/04C08L53/02C08L23/12A43B13/187A43B13/189C08L23/04C08L23/10C08L23/06
Inventor 今里克博森贞树
Owner ASICS CORP