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Foamed shoe insole

A MP-10, supercritical technology, applied in the polymer field, can solve the problem of high price of TPU raw materials, and achieve the effect of good elasticity, light density and easy molding

Active Publication Date: 2018-06-01
FUJIAN XINGXUN NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The price of TPU raw materials is high; the current shrinkage of TPU popcorn products is an existing problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0012] TPU, EVA, OBC, and MP-10 are weighed according to the formula ratio, and then the pellets in the formula are mixed and added to the extruder. The temperature of the extruder is set at 180°C-185°C-190°C-200°C. After extrusion, blow dry, pelletize, send the particles into the electron beam radiation chamber for radiation crosslinking, put the crosslinked particles into a supercritical reactor, add water and pentane into the kettle, and then pass in gas, Start stirring, heat up, and pressurize for a certain period of time, release the pressure to obtain foamed particles, and then put these foamed particles into the sole mold and pass through steam for secondary molding, and after cooling and shaping, the finished shoe midsole is obtained.

[0013] The concrete formula, process parameter and performance of embodiment 1-2 are shown in Table 1.

[0014] Table 1

[0015]

Embodiment 3-4

[0017] TPU, EVA, OBC, and MP-10 are weighed according to the formula ratio, and then the crosslinking agent DCP is weighed, and the dosage is 0.4% of the sum of the total mass parts of EVA, OBC, and MP-10, and then the various raw materials Mix well and add to the extruder. The temperature of the extruder is set at 180°C-185°C-190°C-200°C. After extrusion, blow dry and pelletize to obtain dynamic cross-linked particles. Put the particles into the supercritical reactor In the process, water and pentane are added to the kettle, and then gas is introduced, stirring is started, the temperature is raised, and after a certain period of time, the pressure is released to obtain foamed particles, and then these foamed particles are put into the sole mold and steamed, and the Secondary molding, after cooling and shaping, the finished shoe midsole is obtained. The specific formula, process parameter and performance of embodiment 3-4 are shown in Table 2.

[0018] Table 2

[0019]

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PUM

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Abstract

The invention provides a foamed shoe insole, which is prepared through the steps of with TPU, EVA, SEBS(MP-10), OBC and the like as raw materials, weighing the TPU with one or more of other componentsaccording to ratio, uniformly mixing the components and crosslinking the components, placing the crosslinked granules in a high-pressure reaction kettle, performing supercritical foaming to obtain foamed granules, performing steam moulding to the foamed granule in a mold, and cooling the product to obtain the foamed shoe insole. The foamed shoe insole has excellent elastic and comfort degree andis properly reduced in cost. Through the supercritical foaming, the foamed shoe insole is toxic-free, environment-friendly and pollution-free, and has extensive market prospect.

Description

technical field [0001] The invention belongs to the field of macromolecules, and relates to a method for preparing a formula of a foaming material, which is mainly used for midsoles of shoes. Background technique [0002] In recent years, with the popularity of Adidas's boost series sports shoes, TPU foam materials have become more and more well-known. Compared with traditional EVA foam soles, TPU foam soles have low density, light weight, high resilience, Compression resistance, low compression set, low temperature flexibility, good mechanical properties, green safety and environmental protection, renewable utilization and other advantages. As a product with excellent performance, of course, its market price is also relatively high. For such a large domestic consumer group, this boost sole is still not as competitive as the traditional EVA foam sole in terms of price competitiveness. Therefore, how to not only obtain shoe materials with good performance and comfort, but al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L23/08C08L53/02C08K5/14C08J9/12A43B13/04
CPCA43B13/04C08J9/0023C08J9/0061C08J9/122C08J2203/06C08J2203/08C08J2375/04C08J2423/08C08J2453/02
Inventor 张振秀朱桐玉戴欣汝
Owner FUJIAN XINGXUN NEW MATERIALS TECH CO LTD