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Manufacture method of sandal with independent EVA insole

A formula and special technology, applied in the direction of shoe uppers, footwear, soles, etc., can solve the problems of no shock absorption and cushioning effect and unsatisfactory shock absorption and cushioning effect.

Inactive Publication Date: 2014-07-09
QINGDAO HENGDA CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that sandals have no shock-absorbing and buffering effect or have unsatisfactory shock-absorbing and buffering effects during wearing in daily life, the present invention provides an EVA independent midsole with excellent rebound performance to achieve shock-absorbing performance during wearing. Manufacturing method of sandals with cushioning function

Method used

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Embodiment Construction

[0032] The best implementation mode: take the EVA mass as 100 parts, and other components are expressed with respect to the mass fraction of EVA. EVA raw material: 100, AC foaming agent: 2.5, ZnO: 1.5, DCP: 0.75, fast agent 0.15, flow aid: 1.20, stearic acid: 0.5, zinc stearate: 0.66, co-bridging aid: 0.17 , Talc powder: 10, masterbatch: appropriate amount.

[0033] The manufacturing method of the independent midsole of described EVA, the steps are as follows:

[0034] (1) Weighing: Weigh the raw materials according to the formula, and fully and evenly mix the raw materials except DCP and AC foaming agent;

[0035] (2) Internal mixing: Pour the uniformly mixed raw materials into the internal mixer and fully internal internal mixing. The internal internal mixing time is about 7 minutes. When the temperature reaches 100°C-103°C, add DCP and AC foaming agent, and fully close again. Refining, banburying time is 3 minutes, until the temperature rises to 108°C-110°C, take out the ...

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Abstract

The invention relates a manufacture method of a sandal with an EVA independent insole, and mainly discloses a special EVA formula and a manufacture process. By regarding weight parts of EVA as 100 parts and expressing other constituents in weight parts relative to the EVA, the special EVA formula comprises, based on the weight part ratio, 100 parts of EVA raw material, 2.5 parts of AC foaming agent, 1.5 parts of zinc oxide, 0.75 part of dibasic calcium phosphate, 0.15 part of acceleration agent, 1.2 parts of flow promoting agent, 0.5 part of stearic acid, 0.66 part of zinc stearate, 0.17 part of covalence bridge promoting agent, 10 parts of talcum powder and appropriate color mother grains. The EVA insole is obtained through processes of weighing, banburying, refining starting, pelleting, shaping and the like, and then manufacture of the sandal with the independent EVA insole is completed through the manufacture process of the sandal.

Description

technical field [0001] The invention relates to a daily necessities of footwear, in particular to a formula and a manufacturing method of an EVA independent midsole, and a manufacturing method of sandals with shock-absorbing and buffering functions made of an EVA independent midsole. Background technique [0002] As an indispensable necessity in people's daily life, sandals are more and more valued by people for their comfort and their impact on health. However, there are so many sandals on the market that people choose one thing at a time and lose another, especially most sandals have high and thin soles or thick and hard soles for the pursuit of style. It has become popular fashion, but its impact on human health cannot be ignored. Wearing high-heeled shoes for a long time will cause a series of problems such as hallux valgus, knee joint pain, and lumbar spine deformity, while wearing sandals with thick and hard soles will increase the instability of walking because the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A43B3/12A43B13/04A43B23/02
Inventor 王吉万单存礼单玉萍单玉香刘泽顺王海燕
Owner QINGDAO HENGDA CO LTD
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