Preparation technology of rigid hot melt adhesive

Abstract

The invention discloses a preparation technology of a rigid hot melt adhesive. The rigid hot melt adhesive is characterized by comprising polyester staple fibers, polyester filaments, TPU, EVA, nano calcium powder and ARS. The preparation technology comprises the following operation steps that 1, the polyester filaments and the polyester staple fibers are mixed and woven into a non-woven fabric through needling equipment; 2, ARS glue and the nano calcium powder are stirred and mixed, and then the non-woven fabric is immersed for impregnation treatment; 3, the impregnated non-woven fabric is dried and coiled; 4, the dried non-woven fabric is mixed with glue liquid obtained after heating and melting of the EVA, the ARS and the TPU and extruded through a double-die-head extruder, and a hot melt adhesive substrate is output; 5, forced cooling is carried out on the hot melt adhesive substrate through an ultra-low-temperature cold water roller so as to form the super-strength rigid hot meltadhesive. According to the technology, the service life is long, deformation is not likely to happen, and production is simple.

Description

technical field [0001] The invention relates to a shoe material hot-melt adhesive plate, more specifically, it relates to a preparation process of steel hot-melt adhesive. Background technique [0002] The chemical film of the lining of the shoe material needs to be softened by chemical reagents during use, and then the workers carry out subsequent processing to form the lining surface of the shoe material. The operation steps are complicated, and the chemical reagents can It is harmful to the human body. At the same time, the thickness of the current hot-melt adhesive sheet is relatively thin, and the material is relatively soft, so the supporting force on the hard toe cap is relatively small during use. Contents of the invention [0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a preparation process for rigid hot-melt adhesive which is easy to operate, convenient to use and does not cause harm to the human body. [...

AI Technical Summary

Problems solved by technology

[0002] The chemical film of the lining of the shoe material needs to be softened by chemical reagents during use, and then the workers carry out subsequent processing to form the lining surface of the shoe material. The operation steps are complicated, and the chemical reagents can Harmful to the human body, at the same time, the thickness of the current hot-melt adhesive sheet is thin and the material is soft, so the supporting force on the hard toe cap is small during use