WO2020098039A1

WO2020098039A1 - Method for preparing modified water-based polyurethane insole

Info

Publication number: WO2020098039A1
Application number: PCT/CN2018/121028
Authority: WO
Inventors: 冯宇超
Original assignee: 广东百卓鞋业有限公司
Priority date: 2018-11-16
Filing date: 2018-12-14
Publication date: 2020-05-22
Also published as: CN109467912A

Abstract

A method for preparing a modified water-based polyurethane insole, comprising the following steps: stirring to mix a water-based polyurethane prepolymer emulsion, a rubber emulsion, a foaming agent, a foam stabilizer, a catalyst and a hardener to form modified water-based polyurethane; injecting the modified water-based polyurethane into an insole mold and heating for foaming formation; extracting the insole formed by foaming from the mold, and cutting off residual corners on the insole. By producing insoles by using the method for preparing a modified water-based polyurethane insole, the production process for insoles is simplified such that the production of insoles is faster, manpower and resources are saved, and production costs are reduced.

Description

Preparation method of modified waterborne polyurethane insole The

Technical field

The invention relates to the field of insole preparation.

Background technique

Insoles are a kind of daily necessities commonly used by people, and in the production process of insoles, it is often necessary to foam the production raw materials, then cut according to the thickness of the insole, and then paste the non-slip cloth onto the foamed material, mold it, and then Cut and cut according to the required shape, and finally print the pattern on the fabric. This insole production process is too complicated, which is not conducive to the rapid and effective development of production.

Summary of the invention

In order to solve the above problems, the object of the present invention is to provide a method for preparing modified water-based polyurethane insoles, which uses this method for insole production, simplifies the production process of insoles, makes insole production faster, saves manpower and resources, and further reduces Cost of production.

The technical solutions adopted by the present invention to solve its problems are:

A preparation method of modified waterborne polyurethane insole includes the following steps:

Stirring and mixing aqueous polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener to form modified aqueous polyurethane;

Injecting the modified water-based polyurethane into the insole mold, heating and foaming molding;

Remove the foamed insole from the mold and cut off the remaining corners on the insole.

Further, in the step, the aqueous polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener are stirred and mixed to form a modified aqueous polyurethane. The stirring rate is 2000-4000 rpm, and the temperature during stirring Control at 5-30 ℃.

Further, the molding temperature of the heating foam molding in the step is 70-80 ° C.

Further, the molding time of the heating foam molding in the step is 5-10 minutes.

Further, in the step, the modified water-based polyurethane is injected into an insole mold, the mold includes an upper mold base and a lower mold base, the upper mold base is provided with a stripe structure, and the lower mold base is provided with a honeycomb structure.

The embodiments of the present invention have the following beneficial effects: the water-based polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst and hardener are stirred and mixed to form a modified water-based polyurethane, and the modified water-based polyurethane material has a high Elasticity, abrasion resistance, porous breathability, sweat absorption, deodorization, antibacterial properties, and has the characteristics of no organic solvent emissions, environmental protection, very in line with the requirements of health and environmental protection; the modified waterborne polyurethane is injected into the 1: 1 insole mold, Then the material is heated and foamed, so that the material can be foamed into the size of the insole; then the fully-automatic mechanical arm is used to transfer the infused insole from the mold to the computer cutting machine to cut the corner residue; in this way To produce insoles, which simplifies the production process of insoles and improves the production efficiency of insoles; and does not need to stick non-slip fabrics on insoles as usual, which saves manpower and resources, reduces production costs, and is more conducive to production Expand quickly and efficiently.

BRIEF DESCRIPTION

The present invention will be further described below with reference to the drawings and examples.

FIG. 1 is a flowchart of a method for preparing a modified waterborne polyurethane insole provided by an embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

It should be noted that, if there is no conflict, the various features in the embodiments of the present invention can be combined with each other, which are all within the protection scope of the present invention.

Based on this, the present invention provides a method for preparing modified water-based polyurethane insoles, which uses this method for insole production, simplifies the production process of insoles, makes insole production faster, saves manpower and material resources, and reduces production costs.

The embodiments of the present invention will be further described below with reference to the drawings.

Referring to FIG. 1, an embodiment of the present invention provides a method for preparing a modified water-based polyurethane insole. An embodiment includes but is not limited to the following features:

S1. Stir and mix waterborne polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener to form modified waterborne polyurethane;

S2. Inject the modified water-based polyurethane into the insole mold and heat and foam to form;

S3. Take out the foamed insole from the mold and cut off the remaining corners on the insole.

In step S1, the water-based polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst and hardener are stirred and mixed to form a modified water-based polyurethane; the modified water-based polyurethane material has high elasticity, wear resistance, and porous ventilation , Sweat absorption, deodorization, antibacterial properties, and has the characteristics of no organic solvent emissions, environmental protection, very in line with the requirements of health and environmental protection; water-based polyurethane prepolymer emulsion as the main body of the modified water-based polyurethane, with processing viscosity easy to adjust, No organic solvent emission, environmental protection and health characteristics; rubber emulsion added to water-based polyurethane prepolymer emulsion can improve the elasticity, abrasion resistance, moisture absorption and breathability of the material; the foaming agent plays a role in the process of preparing the material The role of foam; the foam stabilizer mainly plays the role of stabilizing foaming; the catalyst mainly plays the role of accelerating the chemical reaction; the hardener makes the hardness of the prepared material increase.

In step S2, the modified waterborne polyurethane is injected into a 1: 1 insole mold, and then the material is heated and foamed so that the material can be foamed into the size of the insole; the modified waterborne polyurethane is injected into the insole mold, Then the material is heated and foamed, so that the material can be foamed into an insole that is consistent with the size of the mold, and the preparation method of this insole is simple and fast.

In step S3, the fully-automatic mechanical arm is used to transfer the infused insole from the mold to the computer cutting machine to cut the residual corners; the insole prepared in step S2 is taken out, and then the residual corners on the insole are cut by the cutting machine Cutting makes the size of the insole meet the requirements; the entire process is processed by automation, which saves manpower and improves production efficiency.

The production of insoles in this way simplifies the production process of insoles and improves the production efficiency of insoles; and there is no need to stick non-slip fabrics on insoles as usual, thereby saving manpower and material resources, reducing production costs, and more Conducive to the rapid and effective development of production.

Wherein, in the step, the water-based polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener are stirred and mixed to form a modified water-based polyurethane. The stirring rate is 2000-4000 rpm, and the temperature during stirring Control at 5-30 ℃. The stirring rate is controlled at 2000-4000 rpm, for example, 3000 rpm, and the stirring temperature needs to be controlled between 5 ° C and 30 ° C, so that the waterborne polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer , Catalyst and hardener can be better mixed together, so that the prepared modified waterborne polyurethane has better elasticity, wear resistance, hygroscopicity and breathability.

Wherein, the molding temperature of the heating foam molding in the step is 70-80 ° C. The temperature during heating and foaming is controlled at 70-80 ℃, so that the insole formed by foaming has better elasticity and wear resistance.

Wherein, the molding time of heating foam molding in the step is 5-10 minutes. The heating foaming molding time is controlled between 5-10 minutes, so that the insole can have good elasticity and wear resistance, to prevent the foaming time is not enough or the foaming time is too long, resulting in the production of insoles that are too soft or too hard, Make the wearer feel more comfortable wearing this insole.

Wherein, in the step, the modified water-based polyurethane is injected into an insole mold, the mold includes an upper mold base and a lower mold base, the upper mold base is provided with a stripe structure, and the lower mold base is provided with a honeycomb structure. The upper mold base of the insole mold is provided with a striped structure, and the lower mold base is provided with a honeycomb structure, so that the upper surface of the produced insole has a striped structure and the lower surface has a honeycomb structure; the striped structure on the upper surface of the insole makes the insole have a good The anti-slip properties prevent the wearer from slipping on the sole of the foot, and do not need to stick anti-slip fabric on the upper surface of the insole, which saves materials and simplifies the production process; the honeycomb structure on the lower surface of the insole makes the insole have a good The resilience and shock absorption effects make the wearer feel more comfortable.

In addition, this embodiment also provides a method for preparing a modified water-based polyurethane insole. The water-based polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, and hardener are stirred and mixed to form a modified water-based polyurethane; Modified water-based polyurethane material has high elasticity, wear resistance, porous breathability, sweat absorption, deodorization, antibacterial properties, and has the characteristics of no organic solvent emissions, environmental protection, very in line with the requirements of health and environmental protection; water-based polyurethane prepolymer emulsion as a system The material body of the modified waterborne polyurethane has the characteristics of easy adjustment of processing viscosity, no organic solvent emissions, and environmental protection and health; adding rubber emulsion to the waterborne polyurethane prepolymer emulsion can improve the elasticity, abrasion resistance, and hygroscopicity of the material. Breathability; foaming agent plays the role of foaming in the process of preparing materials; foam stabilizing agent mainly plays the role of stabilizing foaming; catalyst mainly plays the role of accelerating chemical reaction; hardener makes the hardness of the prepared material increase.

Inject the modified waterborne polyurethane into a 1: 1 insole mold, and then heat and foam the material to make the material foam into the size of the insole; inject the modified waterborne polyurethane into the insole mold, and then perform the material Heating and foaming enables the material to foam into an insole that is the same size as the mold. This insole preparation method is simple and fast. Use a fully automatic mechanical arm to transfer the infused insole from the mold to the computer cutting machine to cut the corner residue; remove the prepared insole and then cut the corner residue on the insole by the cutting machine, so that the size of the insole is in line with Requirements; the whole process is handled by automation, which saves manpower and improves production efficiency. The production of insoles in this way simplifies the production process of insoles and improves the production efficiency of insoles; and there is no need to stick non-slip fabrics on insoles as usual, thereby saving manpower and material resources, reducing production costs, and more Conducive to the rapid and effective development of production. Among them, the mixing rate of the water-based polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, and hardener to form a modified water-based polyurethane is 2000-4000 rpm, and the temperature during stirring is controlled at 5 -30 ℃, the stirring rate is controlled at 2000-4000 rpm, for example 3000 rpm, the stirring temperature needs to be controlled between 5 ℃ and 30 ℃, so that the waterborne polyurethane prepolymer emulsion, rubber emulsion, foaming agent , Foam stabilizer, catalyst and hardener can be better mixed together, so that the prepared modified waterborne polyurethane has better elasticity, abrasion resistance, moisture absorption and breathability. Wherein, the molding temperature of the heating foam molding in the step is 70-80 ° C. Wherein, the forming time of the heating foam molding in the step is 5-10 minutes, and the temperature during the heating foam molding is controlled at 70-80 ° C, so that the insole formed by foaming has better elasticity and wear resistance. The modified water-based polyurethane is injected into an insole mold, the mold includes an upper mold base and a lower mold base, the upper mold base is provided with a stripe structure, the lower mold base is provided with a honeycomb structure, and the upper mold of the insole mold The seat is provided with a stripe structure, and the lower mold seat is provided with a honeycomb structure, so that the upper surface of the produced insole has a stripe structure, and the lower surface has a honeycomb structure; the stripe structure on the upper surface of the insole makes the insole have good anti-slip properties, very good To prevent the wearer's soles from slipping, and there is no need to stick non-slip fabric on the upper surface of the insole, which saves materials and simplifies the production process; the honeycomb structure on the lower surface of the insole makes the insole have good resilience and shock absorption The effect makes the wearer feel more comfortable.

The above are only preferred embodiments of the present invention, and the present invention is not limited to the above-mentioned embodiments, as long as they achieve the technical effects of the present invention by the same means, they should fall within the protection scope of the present invention.

Claims

A preparation method of modified water-based polyurethane insole, characterized in that it includes the following steps:

Stirring and mixing aqueous polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener to form modified aqueous polyurethane;

Injecting the modified water-based polyurethane into the insole mold, heating and foaming molding;

Remove the foamed insole from the mold and cut off the remaining corners on the insole.
The method for preparing a modified waterborne polyurethane insole according to claim 1, characterized in that in the step, the waterborne polyurethane prepolymer emulsion, rubber emulsion, foaming agent, foam stabilizer, catalyst, hardener are stirred and mixed The stirring rate in forming the modified waterborne polyurethane is 2000-4000 rpm, and the temperature is controlled at 5-30 ° C during stirring. The
The method for preparing a modified waterborne polyurethane insole according to claim 1, characterized in that: the molding temperature of the heating foam molding in the step is 70-80 ° C. The
The method for preparing a modified waterborne polyurethane insole according to claim 1, characterized in that: the molding time of the heating foam molding in the step is 5-10 minutes. The
The method for preparing a modified waterborne polyurethane insole according to claim 1, characterized in that: in the step, the modified waterborne polyurethane is injected into an insole mold, and the mold includes an upper mold base and a lower mold base. The upper mold base is provided with a stripe structure, and the lower mold base is provided with a honeycomb structure. The