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A kind of preparation technology of rubber interlayer TPU foam sole

A rubber interlayer and preparation technology, applied in footwear, other household appliances, household appliances, etc., can solve the problems of poor comfort, high specific gravity, poor elasticity, etc., achieve good vertical resilience, reduce weight, and improve wearing comfort sexual effect

Active Publication Date: 2020-06-30
NANTONG LONGBANG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Through modification, rubber soles generally have the advantages of wear resistance and anti-slip, but have the disadvantages of large specific gravity and poor elasticity. The specific gravity is generally 1.10-1.30, and the vertical rebound rate is 25-35%. Difference

Method used

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  • A kind of preparation technology of rubber interlayer TPU foam sole
  • A kind of preparation technology of rubber interlayer TPU foam sole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation process of the rubber interlayer TPU foam sole of this embodiment includes the following steps:

[0028] S1. The granular TPU foam material is ultrasonically cleaned, and after the cleaning is completed, it is put into a vacuum drying oven to dry to obtain TPU foam particles; in this step, it is best to use a weak alkaline solution to ultrasonically clean the TPU foam material In this way, impurities and oil stains on the surface of the TPU foam material can be effectively removed, so that the TPU particles can better bond with the grounding bottom surface and the sole surface in the subsequent steps.

[0029] S2. Add 20 parts of natural rubber and 15 parts of styrene-butadiene rubber to the mixer, stir and mix evenly at 30°C, then add 3 parts of activator and 2 parts of carbon black, the activator is zinc oxide or zinc stearate, Mix for 10 minutes at a mixing temperature of 150°C, then put the evenly mixed rubber into an open mill for 3 minutes to obtain a 3...

Embodiment 2

[0036] The preparation process of the rubber interlayer TPU foam sole of this embodiment includes the following steps:

[0037] S1. The granular TPU foam material is ultrasonically cleaned, and after the cleaning is completed, it is put into a vacuum drying oven to dry to obtain TPU foam particles; in this step, it is best to use a weak alkaline solution to ultrasonically clean the TPU foam material In this way, impurities and oil stains on the surface of the TPU foam material can be effectively removed, so that the TPU particles can better bond with the grounding bottom surface and the sole surface in the subsequent steps.

[0038] S2. Add 25 parts of natural rubber and 20 parts of styrene-butadiene rubber to the mixer, stir and mix evenly at 40°C, and then add 4 parts of activator and 3 parts of carbon black. The activator is zinc oxide or zinc stearate. Mix for 12 minutes at a mixing temperature of 160°C, and then put the evenly mixed rubber into an open mill for 5 minutes to ob...

Embodiment 3

[0045] The preparation process of the rubber interlayer TPU foam sole of this embodiment includes the following steps:

[0046] S1. The granular TPU foam material is ultrasonically cleaned, and after the cleaning is completed, it is put into a vacuum drying oven to dry to obtain TPU foam particles; in this step, it is best to use a weak alkaline solution to ultrasonically clean the TPU foam material In this way, impurities and oil stains on the surface of the TPU foam material can be effectively removed, so that the TPU particles can better bond with the grounding bottom surface and the sole surface in the subsequent steps.

[0047] S2. Add 30 parts of natural rubber and 25 parts of styrene-butadiene rubber to the mixer, stir and mix evenly at 45°C, and then add 5 parts of activator and 4 parts of carbon black. The activator is zinc oxide or zinc stearate. Mix for 15 minutes at a mixing temperature of 180°C, then put the evenly mixed rubber into an open mixer for 8 minutes to obtai...

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Abstract

The invention discloses a preparation process of a rubber interlayer TPU foaming shoe sole. According to the preparation process, conditions are mild and controllable, TPU foaming particles are ultrasonically cleaned and dried in the preparation process, on one hand, TPU particles can be better connected with a grounded bottom face and a shoe sole face, degumming is avoided, on the other hand, better vertical springback performance can be given for the shoe sole, and wearing comfort is better; glum materials are prepared in two layers, the materials in the two layers are different, the grounded bottom face is bettering anti-slide wear-resisting performance, the shoe sole face better achieves human body comfort, the finally-prepared rubber interlayer TPU foaming shoe sole is low in weight and good in vertical springback performance, the wearing comfort of a rubber shoe is improved, and the market prospect is good.

Description

Technical field [0001] The invention relates to a preparation process of shoe soles, in particular to a preparation process of rubber interlayer TPU foam soles. Background technique [0002] Rubber sole is a widely used sole material. As the name suggests, rubber sole refers to a sole made of rubber. According to the source, rubber sole materials can be divided into natural rubber and synthetic rubber. Natural rubber has the advantages of softness and excellent elasticity, and it is mostly used in indoor sports shoes; artificial synthetic rubber can give shoe materials one or more functions such as wear resistance, non-slip, toughness, and shock absorption according to different additives. [0003] Through modification, rubber soles generally have the advantages of wear-resistant and anti-skid, but they have the disadvantages of large specific gravity and poor elasticity. The specific gravity is generally 1.10-1.30, the vertical rebound rate is 25-35%, and the wearing comfort is re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D35/14B29B13/00C08L7/00C08L9/06C08K3/04C08K3/22C08K5/098
CPCB29B13/00B29D35/142C08K2003/2296C08L7/00C08L9/06C08K3/04C08K3/22C08K5/098
Inventor 徐利
Owner NANTONG LONGBANG PLASTIC
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