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Preparation method of foaming material forming part for shoes

A technology for foaming materials and molded parts, which is applied in the field of preparation of foamed material molded parts for shoes, and can solve the problems of poor water resistance of polyurethane materials, waste of raw materials, and inability to reuse scraps, etc.

Inactive Publication Date: 2012-06-13
蔡龙源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current foaming materials for shoes still have certain shortcomings. The main foaming agent of polyurethane foaming materials is water, and the reaction of isocyanate monomers with water is violent and uncontrollable, and the water resistance of polyurethane materials is not good.
The hardness of pure EVA material is insufficient
In addition, the scraps of all shoe materials in the prior art cannot be used twice, resulting in a waste of raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The invention provides a method for preparing foamed material molded parts for shoes, comprising: mixing raw materials and performing high-pressure banburying to obtain thick solids;

[0033] The thick solid is kneaded to form a cloth-like material;

[0034] vulcanizing and foaming the cloth-like material for 1 to 2 hours, and removing the skin;

[0035] Vulcanizing the material after removing the skin at 150-200°C to obtain a molded part;

[0036] Wherein said raw material comprises by weight parts:

[0037] 20-30 parts of ethylene-vinyl acetate copolymer;

[0038] 20-30 parts of polyethylene;

[0039] 15-25 parts of polyolefin elastomer;

[0040] 1 to 10 parts of filler;

[0041] 2 to 5 parts of foaming agent;

[0042] 0.1-0.5 parts of cross-linking agent.

[0043] In order to prepare the molded parts provided by the present invention, it is necessary to provide a foam material formula suitable for shoes of the present invention, the present invention uses ethy...

Embodiment 1

[0077] Prepare the sole according to the following formula ratio:

[0078] EVA 7350 25 parts

[0079] PE150 25 parts

[0080] Elastomer 5171 20 parts

[0081] Calcium powder 5 parts

[0082] Foaming agent AC 2 parts

[0083] 0.45 parts of DCP cross-linking agent

[0084] Zinc oxide mo 1 part

[0085] Stearic acid SA 0.4 parts

[0086] 1.5 parts of masterbatch

[0087] According to the ratio of raw materials, pour the raw materials into a 75L internal mixer, and banbury under high pressure at 6.5 kg until it becomes a thick solid of the same color. Put the thick solid into an open mill, and carry out open milling for 5 times until it becomes a cloth-like material, and then connect it to a tablet machine, roll it through the machine, and cut it with a knife to form a rectangular thick paper-like material. According to the required colors, put the cured raw materials into the 1600T vulcanizing machine in proportion. After 1 hour, the vulcanizing machine will automatically...

Embodiment 2

[0089] According to the method of embodiment 1, prepare shoe material according to the following ratio:

[0090] 20 copies of EVA;

[0091] PE 20 copies;

[0092] 15 parts of polyolefin elastomer;

[0093] 1 part calcium powder;

[0094] AC blowing agent 2 parts;

[0095] 0.1 part of DCP crosslinking agent;

[0096] 0.5 parts of zinc oxide;

[0097] 0.40 parts of stearic acid;

[0098] 1 part of red masterbatch;

[0099] Secondary use of leftovers 1 part.

[0100] The performance test of embodiment 2 is shown in table 2.

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Abstract

The invention provides a foaming material for shoes. The foaming material comprises the following components in parts by weight: 20-30 parts of ethylene-vinyl acetate copolymer, 20-30 parts of polyethylene, 15-25 parts of polyolefin elastomer, 1-10 parts of filler, 2-5 parts of foaming agent and 0.1-0.5 part of cross-linking agent. The foaming material for the shoes, which is provided by the invention, has the characteristics of high elasticity, wear resistance, sterilization, deodorization and environment friendliness and leftover materials can be recycled.

Description

technical field [0001] The invention relates to the field of shoe materials and their preparation, in particular to a method for preparing foamed material molded parts for shoes. Background technique [0002] Foam material for shoes is the main material for the soles of sports shoes and casual shoes. It is recognized and loved by consumers because of its high resilience, high wear resistance, good weather resistance, and comfortable wearing. [0003] The current foam materials for shoes are generally divided into three categories, one is foamed polyvinyl chloride, which has been almost eliminated due to its large amount of harmful additives and harsh processing conditions, and the second is polyurethane shoes. The foam material is light, fast foaming, has good resilience, and has good wear resistance and temperature resistance after curing; the third is EVA (ethylene-vinyl acetate) elastomers, which have good transparency and elasticity. Odorless, it has good deodorizing, w...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08L23/06C08K13/02C08K3/22C08K5/14C08K3/26C08K5/098C08K3/36C08J3/24C08J9/10A43B13/04
Inventor 蔡龙源
Owner 蔡龙源
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