Under the tensile force of the PTFE biaxially stretched film, the fibrils are pulled out from the PTFE resin particles. As the force increases, the length of the fibrils increases and the film becomes thinner.
When the fibril becomes no longer extensible, the force is transmitted to the middle area of the base tape in sequence, and then the middle part of the base tape is stretched.
Therefore, the biaxially stretched film tends to be thin on both sides and thick in the middle.
High temperature stretching is easier than low temperature stretching to make the film thinner.
It is a fluorine material film manufacturer integrating production, sales and customization.
The company has advanced ptfe film production lines and composite production lines.
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