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Method for improving cohesive force of silica gel and hot melt adhesive

A technology of hot-melt adhesive and cohesive force, which is applied in the direction of surface pretreatment bonding methods and adhesives, can solve the problem that PU and other hot-melt materials are not absolutely safe, and achieve easy implementation, simple process and firm bonding high degree of effect

Inactive Publication Date: 2017-07-28
周红梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a large part of the decorations are fixed on the surface of the fabric by hot pressing and bonding technology, and the decorations are generally made of hot-melt materials such as PU. However, hot-melt materials such as PU are not absolutely safe for the human body. In terms of environmental protection and human health, hot-melt materials such as PU cannot fully meet the technical requirements, and silica gel is very safe for the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for improving the cohesive force of silica gel and hot-melt adhesive. First, the coupling agent whose physical form is liquid is sprayed on the surface of the liquid hot-melt adhesive. Among them, epoxy resin AB glue and acrylate AB glue are selected. At least one of , silica gel AB glue and polyurethane glue is used as a coupling agent to make the liquid hot melt adhesive and the coupling agent produce a preliminary coupling reaction or micro-glue reaction in the liquid state, and then combine it with the physical form to be liquid, semi-liquid or The semi-solid silicone is molded to improve the bonding force between the hot melt adhesive and the silicone. A silicone sheet with a set shape and at least one side with a hot-melt adhesive layer can be directly obtained by compression molding, and the method of the present invention increases the bonding force between the silica gel layer and the hot-melt adhesive layer by 3 to 5 times, so that Silicone sheets can...

Embodiment 2

[0017] A method for improving the bonding force between silica gel and hot melt adhesive,

[0018] Silica gel that is physically in a liquid state is made into a layer of silica gel that is still in a liquid form, or a layer of silica gel that is still in a semi-solid physical form and is made into a layered / flaky layer of silica gel that is still in a semi-solid state. Silica gel The layer is lamellar or flake;

[0019] The liquid hot melt adhesive whose physical form is liquid form is made into a liquid hot melt adhesive layer whose physical form is still in liquid form. The liquid hot melt adhesive layer is layered or sheet-like, and the thickness of the liquid hot melt adhesive layer is controlled at 0.1-0.4mm .

[0020] The coupling agent whose physical form is liquid is evenly sprayed on the surface of the liquid hot melt adhesive layer through a wet spraying process, and at least one of epoxy resin AB glue, acrylate AB glue, silica gel AB glue and polyurethane glue is ...

Embodiment 3

[0025] A method for improving the cohesive force of silica gel and hot-melt adhesive, the main method and steps of this embodiment are the same as those of Embodiment 2, and will not be repeated here. The difference is that

[0026] After the coupling agent is sprayed on the surface of the liquid hot melt adhesive layer, the liquid hot melt adhesive coupling agent composite layer is allowed to stand for 70 to 80 minutes to cause preliminary coupling reaction and micro-glue reaction, and the reacted liquid hot melt adhesive coupling agent composite layer The physical form of the substance changes to a semi-solid form or close to a solid form;

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Abstract

The invention discloses a method for improving the cohesive force of silica gel and a hot melt adhesive. The method is characterized by comprising the steps of firstly spraying a coupling agent of which the physical form is a liquid state on the surface of a liquid hot melt adhesive of which the physical form is a liquid state, carrying out preliminary coupling reaction or mico-crosslinking reaction on the liquid hot melt adhesive and the coupling agent in a liquid form and carrying out compression molding on a product and the silica gel of which the physical form is a liquid state, or a semi-liquid state or a semi-solid state, thereby improving the cohesive force of the silica gel and the hot melt adhesive. The technique is very simple, easy to implement and very low in cost, and the cohesive force of the silica gel and the hot melt adhesive can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of hot-pressing paste type silica gel layer, in particular to a method for improving the bonding force between silica gel and hot-melt adhesive. Background technique [0002] In the prior art, various decorative sheets are fixed on the surface of various fabrics such as clothing, shoes, socks, hats, etc., and the decorative sheets include various decorative sheets such as trademarks, characters, signs and patterns with various shapes. The traditional fixed The method is to fix the patch on the surface of the fabric through sewing process. [0003] At present, a large part of the veneer is fixed on the surface of the fabric by hot pressing and bonding technology, and the veneer is generally made of hot-melt materials such as PU. However, hot-melt materials such as PU are not absolutely safe for the human body. In terms of environmental protection and human health, hot-melt materials such as PU cannot fully m...

Claims

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Application Information

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IPC IPC(8): C09J5/02
CPCC09J5/02C09J2301/304C09J2301/50C09J2483/006
Inventor 周红梅
Owner 周红梅