The three-layer and five-layer composite material is a composite material that uses a special process to compound the PTFE film on the surface of the clothing fabric, which is waterproof, breathable, windproof and warm.
Compared with other polymers, PTFE composites have unique advantages, but there are also some shortcomings, such as poor mechanical processing performance, large linear expansion coefficient, poor creep resistance, and easy cold flow. , poor wear resistance, difficulty in molding and secondary processing, etc., which limits its application.
? There are two methods of compounding three-layer and five-layer composite materials: glue compounding and thermal compounding.
1. Glue composite is a relatively basic composite method, which has low composite strength, is easy to peel off, and has a short service life. Due to the penetration of glue, it has poor air permeability and is not suitable for cleaning, which weakens the superior performance of PTFE.
?2. Thermal composite advanced composite method completely maintains the superior performance of PTFE film, but has strict requirements for thermal composite technology.
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