Insole with good elasticity and manufacturing process

An insole and elastic technology, which is applied in the field of good elastic insoles and manufacturing technology, can solve the problems that the elastic properties and tensile properties of polyurethane insoles cannot be combined, and the elastic properties of insoles are affected.

Active Publication Date: 2021-07-30
广东足迹鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the ubiquitous problem of current polyurethane insoles is that the elastic properties and tensile properties of polyurethane insoles usually cannot be c...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A kind of good elastic insole, its manufacturing process comprises the following steps:

[0060] S1. Melt 70kg of polytetrahydrofuran diol P1500 at 40°C, then add 2kg of triethylenetetramine, 25kg of diethylaminoethanol and 1.5kg of water, and stir well to obtain a spare material.

[0061] S2, add 35kg polyether-modified diphenylmethane diisocyanate to spare material, stir 30s with the speed of 480rad / s, obtain intermediate material; Wherein, the preparation method of polyether-modified diphenylmethane diisocyanate is as follows:

[0062]First bake and melt 25kg of 4-4' diphenylmethane diisocyanate at 115°C, after the temperature of 4-4'diphenylmethane diisocyanate drops below 50°C, pump in 5kg of polyether with a temperature lower than 45°C Polyol DL-3000D and 5kg of polyether polyol EP-3600 whose temperature is lower than 45°C, then heated to 60°C, stirred for 20 minutes, then kept for 25 minutes, and after the NCO% was detected to reach 15-20%, 20kg of carbodiimide w...

Embodiment 2

[0065] A kind of good elastic insole, its manufacturing process comprises the following steps:

[0066] S1. Melt 80kg of polytetrahydrofuran diol P1500 at 45°C, then add 2.5kg of triethylenetetramine, 32kg of ethylene glycol and 1.65kg of water, and stir evenly to obtain a spare material.

[0067] S2, add 40kg polyether-modified diphenylmethane diisocyanate to spare material, stir 25s with the speed of 500rad / s, obtain intermediate material; Wherein, the preparation method of polyether-modified diphenylmethane diisocyanate is as follows:

[0068] First bake and melt 38kg of 4-4' diphenylmethane diisocyanate at 120°C. After the temperature of 4-4'diphenylmethane diisocyanate drops below 50°C, pump in 7kg of DL- 3000D and 8kg of polyether polyol EP-3600 whose temperature is lower than 45°C, then heated to 65°C, stirred for 15 minutes, and then kept for 30 minutes. For amine-modified diphenylmethane diisocyanate MM-103C, continue to stir for 30 minutes, and then detect that the ...

Embodiment 3

[0071] A kind of good elastic insole, its manufacturing process comprises the following steps:

[0072] S1. Melt 90kg of polytetrahydrofuran diol P1500 at 50°C, then add 3kg of diethylenediamine, 40kg of glycerin and 1.65kg of water, and stir well to obtain a spare material.

[0073] S2, add 45kg polyether-modified diphenylmethane diisocyanate to spare material, stir 20s with the speed of 520rad / s, obtain intermediate material; Wherein, the preparation method of polyether-modified diphenylmethane diisocyanate is as follows:

[0074] First bake and melt 50kg of 4-4' diphenylmethane diisocyanate at 120°C, after the temperature of 4-4'diphenylmethane diisocyanate drops below 50°C, pump in 8kg of polyether with a temperature lower than 45°C Polyol DL-3000D and 12kg of polyether polyol EP-3600 whose temperature is lower than 45°C, then heated to 70°C, stirred for 10 minutes, then kept for 35 minutes, and after the NCO% was detected to reach 15-20%, 40kg of carbodiimide was added -...

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PUM

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Abstract

The invention relates to the field of insoles, and particularly discloses an insole with good elasticity and a manufacturing process. The insole is prepared from polytetrahydrofuran glycol, polyether modified diphenylmethane diisocyanate, a catalyst, a chain extender, water and other raw materials. The preparation process comprises the following steps: uniformly stirring the polytetrahydrofuran glycol, the catalyst, the chain extender and the water to obtain a standby material; adding polyether modified diphenylmethane diisocyanate into the standby material, and stirring to obtain an intermediate material; and injecting the intermediate material into a mold for molding, and then cutting to obtain the insole. The insole prepared by the invention has relatively good elastic property and tensile property, and is comfortable to wear and long in service life.

Description

technical field [0001] This application relates to the field of insoles, more specifically, it relates to a good elastic insole and its manufacturing process. Background technique [0002] Shoes are an indispensable item in our daily life. Wherein, shoes generally comprise upper and sole, and sole comprises outer bottom and inner bottom, and inner bottom is also called shoe-pad. When wearing shoes, the feet of the human body directly contact the insole. Therefore, whether the insole is comfortable or not directly affects people's shoe-wearing experience. [0003] At present, most of the insoles are polyurethane foam insoles. Generally, large molds are used to cast polyurethane foam and molded. After molding, they are cut into sheets of different thicknesses, and then heat-pressed with other materials to form insoles. [0004] However, the ubiquitous problem of current polyurethane insoles is that the elastic properties and tensile properties of polyurethane insoles usually...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32A43B17/14
CPCC08G18/6674C08G18/6677C08G18/6688C08G18/4854C08G18/4812C08G18/3206C08G18/3271A43B17/14
Inventor 吴昆英
Owner 广东足迹鞋业有限公司
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