ptfe waterproof and breathable membrane stretching process
People say you can’t have your cake and eat it too, but PTFE waterproof and breathable membrane can break this thousands of years of tradition and prove to everyone that it can have both: waterproof and breathable.
PTFE waterproof and breathable membrane refers to a microporous film made of polytetrafluoroethylene as raw material, using special processing technology, and processed by calendering, extrusion, biaxial stretching and other methods.
This waterproof and breathable membrane has excellent breathability, corrosion resistance, aging resistance, high temperature resistance and other properties.
According to the usage requirements, the pore diameter can be between 0.1-10um, the thickness can be between 2-100um, the porosity can reach 50%–80%, and there are up to hundreds of millions of micropores per square centimeter.
The transverse stretching stage is a key step in controlling the microporous structure and thickness of ptfe waterproof and breathable membrane.
During the transverse stretching process, each part of the film along the transverse stretching direction is stretched unevenly, and transverse stretching is an uneven stretching process.
Compared with the two sides of the film, the stretch in the middle part is relatively small. Uneven transverse stretching causes the middle region of the film in the transverse stretching direction to have small pores and low porosity, while the two sides have large pores and porosity.
The difference in microporous structure in the transverse stretching direction of the film will affect the waterproof and moisture-permeable properties of the film and its laminated fabric.
It is a fluorine material film manufacturer integrating production, sales and customization.
The company has advanced PTFE membrane production lines and composite production lines.
The company’s products are widely used in various fields. With strong technical force and strict management system, the company ensures that everything focuses on the interests of users and provides users with high-tech, high-quality, high-performance, and high-level products.
Interested parties can enter the store for consultation.
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