Selection of protective film for aluminum alloy profiles with frosted surface

In the selection of protective film for frosted aluminum alloy profiles, there are the following differences between PE film (polyethylene film) and PET film (polyester film) :

1. Physical properties: PE film is a kind of soft, good ductility material, easy to bend and wrap profile surface. PET film is relatively hard, with high tensile strength and rigidity.
2. Scratch resistance: Due to the hardness of PET film, its surface is relatively scratch resistant, which can provide a higher level of protection and reduce the occurrence of scratches on the profile surface. PE film is softer and may offer less protection against larger scratches.
3. Transparency and gloss: PE film usually has a good transparency, can maintain the original texture of the frosted surface. PET film may have a high gloss on the surface, to add a certain brightness and appearance of the profile.
4. Weather resistance: PET film usually has good weather resistance and can resist the influence of ultraviolet radiation, high temperature and humidity. The weatherability of PE film may be poor, long time exposure to the harsh environment may lead to color change or deterioration.
5. Cost: In general, the cost of PE film is lower than that of PET film. PET membranes are expensive to manufacture, so they may be used in high-end applications or where appearance requirements are high.
   

The choice of PE or PET film to protect the frosted aluminum profile will vary depending on your specific needs, budget and desired results. It is recommended to consult with relevant suppliers, producers or professionals for more specific recommendations and customized solutions to meet your specific needs.