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Thermoplastic polyurethane foaming shoe sole with injection stripes and preparation process of thermoplastic polyurethane foaming shoe sole

A thermoplastic polyurethane and thermoplastic polyurethane technology is applied in the field of thermoplastic polyurethane foamed shoe soles and their preparation technology, and achieves the effects of being soft to the touch, not easily damaged, and not easily deformed and hardened

Inactive Publication Date: 2021-07-06
GUANGDONG ANGSI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a thermoplastic polyurethane foam sole with a unique injection pattern and a good rebound coefficient, which is not easily deformed and hardened in a low temperature environment, is environmentally friendly, recyclable, and has a long service life and its preparation process To solve the deficiencies in the above-mentioned existing sole preparation technology

Method used

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  • Thermoplastic polyurethane foaming shoe sole with injection stripes and preparation process of thermoplastic polyurethane foaming shoe sole
  • Thermoplastic polyurethane foaming shoe sole with injection stripes and preparation process of thermoplastic polyurethane foaming shoe sole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of preparation technology of the thermoplastic polyurethane foaming shoe sole of band injection stripe line, comprises the following steps:

[0042] S1: According to the content of gas foaming agent in thermoplastic polyurethane, the ratio of gas foaming agent to thermoplastic polyurethane is 1:40, and the thermoplastic polyurethane raw material is put into twin-screw extrusion through a weightless limited precision feeder Machine shearing, combined with a single-screw heating device for heat treatment to form thermoplastic polyurethane in a molten state;

[0043] S2: During the heat treatment, the gas foaming agent is injected according to the proportion of step S1 at the same time, and the gas foaming agent is injected into the extruder barrel to reach a pressure value of 8kpa. Under the condition that the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder, it is uniformly formed Mixture of polymer ~ gas homogeneous s...

Embodiment 2

[0050] A kind of preparation technology of the thermoplastic polyurethane foaming shoe sole of band injection stripe line, comprises the following steps:

[0051] S1: According to the content of gas foaming agent in thermoplastic polyurethane, the ratio of gas foaming agent to thermoplastic polyurethane is 1:200, and the thermoplastic polyurethane raw material is put into twin-screw extrusion through a weightless limited precision feeder Machine shearing, combined with a single-screw heating device for heat treatment to form thermoplastic polyurethane in a molten state;

[0052] S2: During the heat treatment, the gas foaming agent is injected according to the ratio of step S1 at the same time, and the gas foaming agent is injected into the extruder barrel to reach a pressure value of 4kpa, and the molten thermoplastic polyurethane is continuously sheared and mixed with the twin-screw extruder to form a uniform Mixture of polymer ~ gas homogeneous system;

[0053] S3: Continue...

Embodiment 3

[0059] A kind of preparation technology of the thermoplastic polyurethane foaming shoe sole of band injection stripe line, comprises the following steps:

[0060] S1: According to the content of gas foaming agent in thermoplastic polyurethane, the ratio of gas foaming agent to thermoplastic polyurethane is 1:25, and the thermoplastic polyurethane raw material is put into twin-screw extrusion through a weightless limited precision feeder Machine shearing, combined with a single-screw heating device for heat treatment to form thermoplastic polyurethane in a molten state;

[0061] S2: During the heat treatment, the gas foaming agent is injected according to the proportion of step S1 at the same time, and the gas foaming agent is injected into the extruder barrel to reach a pressure value of 6kpa, and the molten thermoplastic polyurethane is continuously sheared and mixed with the twin-screw extruder to form a uniform Mixture of polymer ~ gas homogeneous system;

[0062] S3: Cont...

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Abstract

The invention relates to the technical field of manufacturing of foaming shoe soles, in particular to a thermoplastic polyurethane foaming shoe sole with injection stripes and a preparation process of the thermoplastic polyurethane foaming shoe sole. According to the thermoplastic polyurethane foaming shoe sole with the injection stripes, the foaming shoe sole is prepared by the steps of fully mixing thermoplastic polyurethane and a gas foaming agent in a proportion range of 1: (25-200) under the matching of a double screw and a single screw to form a TPU polymer foaming material, injecting the TPU polymer foaming material into a mold through extrusion injection, and performing hot pressing, mold closing and shaping, wherein injection stripes with the width of 1-60 mm are evenly distributed on the foaming shoe sole, and dark isolating stripe textures are arranged between the extrusion injection stripes. The thermoplastic polyurethane foaming shoe sole has the beneficial effects that the produced thermoplastic polyurethane foaming shoe sole has unique extrusion injection stripe textures and isolating texture stripes, has distinct personality and style, has a good elastic effect, a good rebound effect and a good wear-resistant effect, and is long in service life and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of manufacturing foamed shoe soles, in particular to a thermoplastic polyurethane foamed shoe sole with injection stripes and a preparation process thereof. Background technique [0002] Shoes are an indispensable item in people's daily life. With the development of society and the acceleration of the pace of life, people pay more and more attention to the comfort of shoes and whether they can show their individuality. The sole is an important part of the shoe. The existing soles are manufactured by a one-time molding process. The produced soles are all solid-color soles with a single color and a monotonous appearance, which cannot highlight individuality. Some soles with patterns and textures need to be passed Subsequent secondary processing can realize the attachment of new lines, which not only increases the processing process, but also requires the purchase of additional new machinery for auxiliary produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A43B13/04A43B13/18A43B13/14B29D35/12
CPCA43B13/04A43B13/187A43B13/14B29D35/122B29D35/128B29D35/12A43B13/18C08J9/12
Inventor 陈旭斌
Owner GUANGDONG ANGSI NEW MATERIAL TECH CO LTD
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