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Between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and manufacturing method thereof

A manufacturing method and closed-cell technology, applied in footwear, shoe soles, footwear, etc., can solve the problems of easy shrinkage of EVA foam shoe materials and no related reports, and achieve enhanced impact resistance, excellent physical properties, and overcoming Thick and wrinkled skin

Active Publication Date: 2015-07-22
泉州泰亚鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many reports about EVA foam shoe material in the market, such as Huang Chao disclosed a kind of anti-shrinkage EVA foam shoe material in Chinese invention patent CN201310479631, using the characteristics of high temperature resistance of polyolefin block copolymer, combined with ethylene vinyl acetate Copolymers, ethylene octene copolymers, etc. solve the technical problem that EVA foamed shoe materials are easy to shrink; Gao Ming, Liu Dong, etc. disclosed a hemp fiber modified EVA foamed shoe material and its preparation method in Chinese invention patent CN201410523430 , using the blending technology of hemp fiber and ethylene vinyl acetate copolymer, the resulting EVA foam shoe material has the characteristics of moisture absorption, breathability, antibacterial, etc., but the EVA foam shoe material between closed cells and open cells and its manufacturing The method has not been reported yet

Method used

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  • Between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and manufacturing method thereof
  • Between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and manufacturing method thereof
  • Between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. The composition of raw materials by mass percentage is as follows:

[0047] Ethylene-vinyl acetate copolymer EVA7470M: 45%;

[0048] Ethylene-vinyl acetate copolymer EVA7350M: 25%;

[0049] Ethylene-octene copolymer POE8150: 15%;

[0050] EPDM3745P: 6%;

[0051] Stearic acid: 0.4%;

[0052] Zinc stearate: 1%;

[0053] Zinc oxide: 1%;

[0054] Dicumyl peroxide: 0.6%;

[0055] Mixed blowing agent: 3%;

[0056] Masterbatch: 3%.

[0057] 2. the manufacture method of the EVA foam shoe material between described open cell and closed cell, comprises the following steps:

[0058] 1) Pound material

[0059] Weigh the raw materials according to the designed formula, weigh the dicumyl peroxide and the mixed blowing agent separately, mix the two together, and mix the rest together;

[0060] 2) Banbury

[0061] Pour the prepared raw materials into a 75L internal mixer except for dicumyl peroxide and foaming agent, and start the internal mixer to mix the materials evenly....

Embodiment 2

[0074] Embodiment 2: adjust the consumption of EVA7470M, EVA7350M, POE8150 on the basis of embodiment 1, its raw material formula is as follows:

[0075] Ethylene-vinyl acetate copolymer EVA7470M: 53%;

[0076] Ethylene-vinyl acetate copolymer EVA7350M: 22%;

[0077] Ethylene-octene copolymer POE8150: 10%;

[0078] EPDM3745P: 6%;

[0079] Stearic acid: 0.4%;

[0080] Zinc stearate: 1%;

[0081] Zinc oxide: 1%;

[0082] Dicumyl peroxide: 0.6%;

[0083] Mixed blowing agent: 3%;

[0084] Masterbatch: 3%.

Embodiment 3

[0085] Embodiment 3: On the basis of embodiment 2, continue to adjust the consumption of EVA7470M, EVA7350M, POE8150, EPDM3745P, make it control within the set dosage range, its raw material formula is as follows;

[0086] Ethylene-vinyl acetate copolymer EVA7470M: 50%;

[0087] Ethylene-vinyl acetate copolymer EVA7350M: 25%;

[0088] Ethylene-octene copolymer POE8150: 11%;

[0089] EPDM3745P: 5%;

[0090] Stearic acid: 0.4%;

[0091] Zinc stearate: 1%;

[0092] Zinc oxide: 1%;

[0093] Dicumyl peroxide: 0.6%;

[0094] Mixed blowing agent: 3%;

[0095] Masterbatch: 3%.

[0096] In order to better illustrate the research results, the use of the blowing agent in the formula does not use a mixed blowing agent. Comparative example 1 uses the azo blowing agent instead of the mixed blowing agent on the basis of Example 1 ), comparative example 2 is that on the basis of embodiment 2, the mixed foaming agent is changed to an open-cell foaming agent (H), and comparative example...

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Abstract

The invention discloses a between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and a manufacturing method thereof and relates to an EVA foamed shoe material. The between-closed-pore-and-open-pore EVA foamed shoe material is prepared from raw materials: EVA, an ethylene-octylene copolymer, ethylene propylene terpolymer rubber, stearic acid, zinc stearate, zinc oxide, dicumyl peroxide, a foamer and color masterbatch. The method comprises the steps: mixing dicumyl peroxide and the foamer so as to prepare a mixture for later use, mixing the rest raw materials, then, carrying out first-stage banburying, adding the mixture of dicumyl peroxide and the foamer when the temperature reaches 105-110 DEG C, carrying out second-stage banburying, acquiring a mixed material until the temperature rises to 112-115 DEG C, thinning twice, carrying out roll releasing, putting roll release into a flat mold, adding sulfur and foaming; standing, and carrying out treatment, such as surface peeling, slitting, bevel cutting, cutting, polishing, hot-press sizing and trimming, thereby obtaining the between-closed-pore-and-open-pore EVA foamed shoe material.

Description

technical field [0001] The invention relates to an EVA foamed shoe material, in particular to an EVA foamed shoe material between closed cells and open cells and a manufacturing method thereof. Background technique [0002] my country is a big producer of footwear, and there are all kinds of shoes. With the progress of the times, the improvement of people's quality of life, the change of consumption and life concepts, comfort, fashion and convenience are the development direction of footwear. EVA foam shoe material is a light, soft and comfortable shoe material variety that is made of EVA as the main material, mixed with various special elastomers, and obtained through a specific molding process. EVA foam shoe materials have been popular in the development of shoe materials for many years. Its lightness, comfort and durability are unmatched by other shoe materials. All kinds of casual shoes, sandals and slippers produced by direct foaming of EVA are well received by the mass...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/16C08K13/02C08K5/09C08K5/098C08K5/14C08K3/22C08J3/22B29D35/12A43B13/04
CPCA43B13/04B29D35/122B29L2031/504C08J3/22C08J3/223C08J9/103C08J9/107C08J2203/04C08J2203/18C08J2323/08C08L23/0853C08L2203/14C08L2205/025C08L2205/035C08L2310/00C08L23/0815C08L23/16C08K13/02C08K5/09C08K5/098C08K5/14C08K2003/2296
Inventor 陈永华林松柏
Owner 泉州泰亚鞋业有限公司
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