Smellless EVA (ethylene-vinyl acetate) material used as shoe sole and preparation method thereof

A natural, hemp-stem technology, used in soles, applications, footwear, etc., can solve the problems of poor breathability of soles, easy to produce peculiar smell, and unpleasant odor of materials, and achieve the effect of good breathability, comfort and elasticity.

Active Publication Date: 2014-07-09
NANJING DONGYA RUBBER & PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of shoemaking, most of the existing shoe soles are made of EVA materials with strong smell and smell and various additives through mixing, foaming or secondary foaming. The material itself smells very bad. It is easy to make shoes smelly; in addition, the soles made of traditional EVA material foaming or secondary foaming are also very poor in air permeability, making it easier for people to smell when wearing them.
And the soles made of some other odorless materials cannot guarantee the comfort and elasticity of the shoes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Prepare the following raw materials in parts by weight and send them to the internal mixer:

[0028] 70 copies of EVA;

[0029] 5 servings of natural hemp powder;

[0030] 3 parts of natural bamboo fiber;

[0031] 3 parts of filler;

[0032] Odorless foaming agent 2.5 parts;

[0033] 0.3 parts of odorless coupling agent;

[0034] 0.5 parts of zinc oxide powder;

[0035] 0.1 part of stearic acid,

[0036] The banburying temperature is controlled at 105℃, the air pressure is 0.65kg, and the banburying time is 10 minutes; the mixture obtained from the banburying is sent to the open mill for smelting, and the temperature is controlled at 80℃ during the smelting, 15mm2 times, 1mm2 times; when discharging The thickness of the discharging machine is 2mm, and the cooling water of the discharging machine is kept smooth; the resulting mixture is sent to the foaming machine for foaming, the foaming temperature is 160°C, the pressure is 170kg, and the time is 12-18 minutes; after coo...

Embodiment 2

[0037] Example 2: Prepare the following raw materials in parts by weight and send them to the internal mixer:

[0038] 90 copies of EVA;

[0039] 15 parts of natural hemp stem powder;

[0040] 7 parts of natural bamboo fiber;

[0041] 7 parts of filler;

[0042] 4.5 parts of odorless foaming agent;

[0043] 0.7 parts of odorless coupling agent;

[0044] 1.5 parts of zinc oxide powder;

[0045] 0.5 parts of stearic acid,

[0046] The banburying temperature is controlled at 115℃, the air pressure is 0.8kg, and the banburying time is 10 minutes; the mixture obtained from the banburying is sent to the open mill for smelting, and the temperature is controlled at 90℃ during the smelting, 15mm2 times, 1mm2 times; when discharging The thickness of the discharging machine is 3mm, and the cooling water of the discharging machine is kept smooth; the obtained mixture is sent to the foaming machine for foaming, the foaming temperature is 180℃, the pressure is 170kg, and the time is 18 minutes; after c...

Embodiment 3

[0047] Example 3: Prepare the following raw materials in parts by weight and send them to the internal mixer:

[0048] 80 copies of EVA;

[0049] 10 servings of natural hemp stem powder;

[0050] 5 parts of natural bamboo fiber;

[0051] 5 parts of filler;

[0052] Odorless foaming agent 3.5 parts;

[0053] 0.5 parts of odorless coupling agent;

[0054] 1 part of zinc oxide powder;

[0055] 0.3 parts of stearic acid,

[0056] The banburying temperature is controlled at 110℃, the air pressure is 0.7kg, and the banburying time is 10 minutes; the mixture obtained from the banburying is sent to the open mill for smelting, and the temperature is controlled at 85℃ during the smelting, 15mm2 times, 1mm2 times; when discharging The thickness of the discharging machine is 3mm, and the cooling water of the discharging machine is kept smooth; the obtained mixture is sent to the foaming machine for foaming, the foaming temperature is 170℃, the pressure is 175kg, and the time is 15 minutes; after cool...

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PUM

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Abstract

The invention discloses a smellless EVA (ethylene-vinyl acetate) material used as a shoe sole and a preparation method thereof. The smellless EVA material comprises the following components in parts by weight: 70-90 parts of EVA, 5-15 parts of natural flax waste powder, 3-7 parts of natural bamboo fiber, 3-7 parts of filler, 2.5-4.5 parts of smellless foaming agent, 0.3-0.7 part of smellless coupling agent, 0.5-1.5 parts of zinc white and 0.1-0.5 part of stearic acid. The preparation method comprises the following steps: banburying, open milling, discharging, foaming and the like. The material is prepared by foaming the EVA used as a substrate, can ensure the comfort and elasticity of the shoes, can effectively perform deodorization and mold resistance on the shoes, and has favorable air permeability.

Description

technical field [0001] The present invention relates to an EVA (ethylene-vinyl acetate copolymer) material used as a shoe sole, in particular to an odorless EVA material used as a shoe sole. Background technique [0002] In the process of shoemaking, most of the existing shoe soles are made of EVA materials with strong smell and smell and various additives through mixing, foaming or secondary foaming. The material itself smells very bad. It is easy to make shoes produce peculiar smell; in addition, the soles made of traditional EVA material foaming or secondary foaming are also very poor in air permeability, which makes it easier for people to produce peculiar smell when wearing them. And use the sole that some other odorless materials are made, can not guarantee the comfort and elasticity of shoes again. Contents of the invention [0003] Purpose of the invention: the purpose of the present invention is to address the deficiencies of the prior art and provide a shoe sole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L1/02C08K13/02C08K3/22C08K5/09C08J9/04A43B13/04
CPCA43B13/04C08J9/04C08J2323/08C08J2497/02C08L23/0853C08L2203/14C08L2205/025C08L2205/03C08L2205/16C08L97/02C08K13/02C08K2003/2296C08K5/09
Inventor 葛胜超
Owner NANJING DONGYA RUBBER & PLASTICS
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