A kind of detection method and sample laminating machine of the coating fastness of a kind of PTFE coated membrane filter material

Abstract

The invention discloses a method for detecting the film fastness of a PTFE film-coated filter material. The steps are: (1) heating the hot melt adhesive to a molten state; (2) sending a pre-coated felt sample into a laminating machine for Glue coating; (3) forming a hot-melt adhesive-coated felt sample to form an adhesive film; (4) preparing the hot-melt adhesive-coated felt sample into a warp test piece and a weft test piece; and testing the peeling strength respectively. The application also provides a sample bonding machine, which has a frame, a first heating roller, a second heating roller and a bonding roller installed on the frame; the bonding roller is located obliquely above the second heating roller; The central axis of the first heating roller and the central axis of the second heating roller are located on the same horizontal plane, and the angle between the first heating roller and the second heating roller is formed as a heating cavity for placing hot melt adhesive. This application can solve the problem that there is no uniform, simple and accurate evaluation method for the evaluation test of the film fastness of the film-coated filter material in the current industry.

Description

technical field [0001] The invention relates to a method for detecting the film fastness of a PTFE film-coated filter material and a sample bonding machine for preparing samples for testing the film fastness. Background technique [0002] With the development of the filter material industry, the use of PTFE-coated filter media in industrial dust removal is becoming more and more popular. PTFE-coated filter media is a new type of filter material that is compounded with a layer of polytetrafluoroethylene (PTFE) film on the surface of ordinary filter materials. , the PTFE membrane on the outermost layer of the filter material is equivalent to the role of "primary dust layer", which can achieve the effect of surface filtration. One of the key factors affecting the use effect and life of PTFE coated filter media is the strength of the film fastness. At present, there is no good detection method for the film fastness in the industry. [0003] At present, the industry usually refe...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is at first to provide a kind of detection method of the film fastness of the PTFE film-coated filter material of simple and high accuracy, to solve the evaluation test of the film-coated filter material film fastness in the current industry and there is no unification, simplicity, Accurate means of evaluation

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