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Production process of E-TPU (expanded thermoplastic polyurethane) shoe material

A production process and popcorn technology, which is applied to shoe soles, footwear, instruments for pressing reflection points, etc., can solve the problems of large surface damage of TPU foam particles, large amount of PU, and high density, and reduce production costs and market. The effect of improving competitiveness and wide application

Inactive Publication Date: 2017-11-17
陈茂双
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a manufacturing process of TPU popcorn shoe material to overcome the problems of the existing TPU popcorn shoe material, such as the large surface damage of TPU foam particles, large amount of PU, and high density.

Method used

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  • Production process of E-TPU (expanded thermoplastic polyurethane) shoe material
  • Production process of E-TPU (expanded thermoplastic polyurethane) shoe material
  • Production process of E-TPU (expanded thermoplastic polyurethane) shoe material

Examples

Experimental program
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Effect test

Embodiment approach 1

[0019] The manufacturing process of TPU popcorn shoe material, the making of the TPU popcorn shoe material of the present embodiment comprises the following steps of carrying out successively: a. material preparation: prepare 90 parts of TPU foamed particles, A glue 7.6 parts, B glue by weight 1.9 parts, 0.5 parts of accelerator; b. Add glue A: Stir TPU foam particles and glue A in the mixing chamber of the pouring machine evenly. Only glue A can ensure the fluidity of glue A. The distribution on the surface of the foamed particles is more uniform, the thickness of the glue layer is smaller, and the distribution of the glue is lower; c. Add B glue: after step b is mixed evenly, add B glue and stir evenly. When adding B glue, when there is no promotion In the case of the agent, the reaction between glue A and glue B is relatively slow. At this time, glue B can be evenly distributed on the surface of glue A before substantially reacting with glue A; d. Add accelerator: step c is ...

Embodiment approach 2

[0022] The making of the TPU popcorn shoe material of the present embodiment comprises the following steps of carrying out successively: a. material preparation: prepare 92 parts of TPU expanded particles, A glue 5.91 parts, B glue 1.69 parts, accelerator 0.4 part by weight; b .Add glue A: Stir TPU foam particles and glue A in the mixing chamber of the pouring machine; c. Add glue B: mix well in step b, then add glue B and stir well; d. Add accelerator: mix in step c After the accelerator is uniform, add the accelerator. Before the accelerator is mixed, atomize it, then mix it with the material evenly, and then quickly inject it into the mold cavity; the accelerator is an amino compound, such as a dithiocarbamate accelerator, an amino-terminated polyether accelerator , N, N-dimethylaniline, etc., adjust the curing time by selecting the type of accelerator; e. Foaming: the mold cavity is moved into the oven, and the molded shoe material can be obtained by foaming at 50-70°C. The...

Embodiment approach 3

[0024] The making of the TPU popcorn shoe material of the present embodiment comprises the following steps of carrying out successively: a. material preparation: prepare 75 parts of TPU expanded particles, A glue 18.8 parts, B glue 4.7 parts, accelerator 1.5 parts by weight; .Add glue A: Stir TPU foam particles and glue A in the mixing chamber of the pouring machine; c. Add glue B: mix well in step b, then add glue B and stir well; d. Add accelerator: mix in step c After the accelerator is uniform, add the accelerator. Before the accelerator is mixed, atomize it, then mix it with the material evenly, and then quickly inject it into the mold cavity; the accelerator is an amino compound, such as a dithiocarbamate accelerator, an amino-terminated polyether accelerator , N, N-dimethylaniline, etc., adjust the curing time by selecting the type of accelerator; e. Foaming: the mold cavity is moved into the oven, and the molded shoe material can be obtained by foaming at 50-70°C. The f...

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Abstract

The invention relates to a production process of an E-TPU (expanded thermoplastic polyurethane) shoe material. The production process of the E-TPU shoe material comprises the steps implemented in sequence as follows: a, material preparation: 75-92 parts of TPU foamed particles, 5.9-19 parts of glue A, 0.9-4.8 parts of glue B and 0.38-1.5 parts of an accelerator are prepared by weight; b, addition of the glue A: the TPU foamed particles and the glue A are stirred uniformly; c, addition of the glue B: the glue B is added after the materials in the step b are mixed uniformly, and the materials are stirred uniformly; d, addition of the accelerator: the accelerator is added after the materials in the step c are mixed uniformly, the materials are mixed uniformly, and the mixture is injected into a die cavity; e, foaming: the die cavity is moved into an oven, foaming molding is performed at 50-70 DEG C for 2-3 min, and the molded shoe material can be obtained. The TPU particles can account for 90%-92% by weight of the shoe material, the weight reduction limit of the current shoe material is reached, and the E-TPU shoe material has the characteristics of being ultralight, ultrahigh in elasticity, more environment-friendly, low in cost and capable of performing massaging.

Description

technical field [0001] The invention relates to a manufacturing process of a shoe material, in particular to a manufacturing process of a TPU popcorn shoe material with low glue content. Background technique [0002] Popcorn shoe material is favored by the market for its lightness and excellent cushioning performance. There are two main types of popcorn soles at present: one is a structure in which the surface of TPU foam particles is melted at high temperature and bonded together, such as the popcorn sole with application number 201530030996.6 and the "ClimaCoolTM" series sole of Adidas; Popcorn soles made of PU and TPU foam, such as PU popcorn soles with application number 201510966449.8. The former popcorn shoes have a single color, and the manufacturing process will deform the spherical surface of the TPU particles. The outer surface of the finished sole is almost flat, with only the connection texture between the TPU particles. The production of popcorn soles of the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/236A43B13/18A61H39/04B29C44/60C08L75/04
CPCA43B13/187A61H39/04A61H2201/165A61H2205/125B29C44/60C08J9/236C08J2375/04
Inventor 陈茂双
Owner 陈茂双
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