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Cold Press Synthesis Technology of Shoe Material Products Using Thermoplastic Elastomer Foaming Particles

A technology of thermoplastic elastomers and foamed particles, which is applied in footwear, applications, household appliances, etc., can solve the problems of uneven heating of finished products, increased equipment investment, and stability deviation, so as to avoid secondary mold opening, Simple process and reduced extrusion time

Active Publication Date: 2019-07-23
上海德亿化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the deviation of steam temperature and pressure control stability, the steam flow line will be short-circuited, and the water droplets generated by steam condensation are not easy to discharge, resulting in low-temperature areas and other factors, resulting in uneven heating of finished products and "mouse holes" and foaming The sole made of particles can only be used as a midsole and needs to be bonded with the outsole or outsole to form the final finished product sole
Two mold openings are required here, and the two heat sealings not only increase energy consumption but also increase equipment investment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) The polyether type thermoplastic polyurethane elastomer foamed particles, the expansion ratio is 1 to 12 times, and the particle packing density is: 0.05 to 0.6kg / L (specifically, the commercially available product A- Baly85) is sent into the dehumidification drying hopper by a vacuum pump, and the drying temperature is 80°C;

[0043] (2) After the polyurethane glue is hot-melted, it is poured into the atomization equipment through the metering equipment, and the atomization equipment atomizes the polyurethane glue into 0.05 μm droplets and sprays them into the vibrating fluidized bed;

[0044] (3) Take the dried and preheated A-Baly85 foamed particles and release them on the vibrating fluidized bed, so that they move from the front end of the vibrating fluidized bed to the end under the mechanical force of vibration and turning, and at the same time, A-Baly85 foams during the boiling process The particles contact and evenly absorb the scattered atomized polyurethan...

Embodiment 2

[0049] (1) The polyether type thermoplastic polyurethane elastomer foamed particles, the expansion ratio is 1 to 12 times, and the particle packing density is: 0.05 to 0.6kg / L (preferably the commercially available product A-Baly85 of Nantong Deyi New Material Co., Ltd. ) into the dehumidification and drying hopper through a vacuum pumping machine, and the drying temperature is 60°C;

[0050] (2) After the polyurethane glue is hot-melted, it is poured into the atomization equipment through the metering equipment, and the atomization equipment atomizes the polyurethane glue into 2 μm droplets and sprays them into the vibrating fluidized bed;

[0051] (3) Take the dried and preheated A-Baly85 foamed particles and release them on the vibrating fluidized bed, so that they move from the front end of the vibrating fluidized bed to the end under the mechanical force of vibration and turning, and at the same time, A-Baly85 foams during the boiling process The particles contact and eve...

Embodiment 3

[0056] (1) The polyether type thermoplastic polyurethane elastomer foamed particles, the expansion ratio is 1 to 12 times, and the particle packing density is: 0.05 to 0.6kg / L (preferably the commercially available product A-Baly85 of Nantong Deyi New Material Co., Ltd. ) into the dehumidification and drying hopper through a vacuum pumping machine, and the drying temperature is 50°C;

[0057] (2) After the polyurethane glue is hot-melted, it is poured into the atomization equipment through the metering equipment, and the atomization equipment atomizes the polyurethane glue into 50 μm droplets and sprays it into the vibrating fluidized bed;

[0058] (3) Take the dried and preheated A-Baly85 foamed particles and release them on the vibrating fluidized bed, so that they move from the front end of the vibrating fluidized bed to the end under the mechanical force of vibration and turning, and at the same time, A-Baly85 foams during the boiling process The particles contact and even...

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Abstract

The invention relates to a cold press-fit forming technology for making shoe material products by adopting thermoplastic elastomer foamed particles. The technology specifically comprises the followingsteps: firstly, the polyurethane glue is atomized into liquid drops by using an atomizing jetting machine, and is scattered to the surface of a vibration boiling bed in an injection state; then, thethermoplastic elastomer foaming particles after drying and preheating are released to the vibration boiling bed, so that the thermoplastic elastomer foaming particles are moved to the tail end from the front end of the vibration boiling bed under the action of vibration and overturning mechanical force, and simultaneously, the thermoplastic elastomer foaming particles make contact and uniformly adsorbing the scattered atomized polyurethane glue droplets; finally, the thermoplastic elastomer foaming particles adsorbed with the polyurethane glue droplets are sent to the upper part of a shoe material outsole or the inner part of a shoe material outer bottom, are extruded and heated to form a middle bottom layer, and are bonded with the shoe material outsole or the shoe material outer bottom.According to the cold press-fit forming technology for making the shoe material products by adopting the thermoplastic elastomer foamed particles, compared with the prior art, two shoe manufacturing links of middle bottom forming under a low-temperature environment and one-time bonding of the outsole / outer bottom and the middle bottom are achieved, the process is simple and convenient, the procedure is shortened and materials are saved.

Description

technical field [0001] The invention relates to a method for manufacturing shoe material products from thermoplastic elastomer foamed particles, in particular to a cold-compression molding process for manufacturing shoe material products using thermoplastic elastomer foamed particles. Background technique [0002] In the field of shoe materials, a large number of foamed thermoplastic elastomer particles are currently used as the midsole of shoe materials. The finished product of the midsole can not only achieve light weight, effective rebound feedback, but also realize cost and material savings. This type of foam layer is basically a particle mold heat-sealing process. The heating medium for heat-sealing is low-pressure steam, and the steam is usually 1.2-3.5kg / cm 2 , 120-240°C. Due to the deviation of steam temperature and pressure control stability, the steam flow line will be short-circuited, and the water droplets generated by steam condensation are not easy to discharg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D35/14B29K101/12
Inventor 陈乔健郭杨龙
Owner 上海德亿化工有限公司
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