What Is 7 Mil Polyester Film?
7 mil polyester film is a thick PET film with an approximate thickness of 178 microns. Compared with common thin flexible packaging PET film, it provides higher stiffness, better handling strength and stronger dimensional stability.
It is often selected when buyers need a durable film for insulation, printing, protective sheets, overlays, shims, spacers, die-cut parts or technical converting.
For customers who are comparing polyester film grades, CloudFilm can help match thickness, surface finish, roll width, winding direction and packing format according to the actual process.
Why Choose PET Polyester Film?
PET polyester film is valued for its strength, clarity, heat resistance, chemical resistance and stable gauge. These properties make it useful across both packaging and industrial markets.
If your project needs a clear and glossy surface, you may also compare it with our Gloss PET Film.
If the application requires a lower-reflection surface for printing, display or premium visual effect, Matte PET Film may be a better option.
CloudFilm Supply Capability
As a PET polyester film supplier in China, CloudFilm supports buyers who need reliable film rolls for printing, insulation, coating, lamination and die cutting. Our wider BOPET Film portfolio covers different polyester film grades for packaging, labels, electrical insulation and photovoltaic backsheet applications.
For projects that require sealing performance, customers can also review Heat Sealable PET Film. For release liner, adhesive, label or coating processes, Silicone Coated PET Film may also be relevant.
Custom Film Selection For Your Project
The correct 7 mil polyester film depends on how it will be used. A printing customer may care about surface energy, ink adhesion and flatness. An electrical insulation customer may focus on thickness tolerance, dielectric performance and cleanliness. A die-cutting customer may need roll hardness, edge quality and stable gauge.
If your product also needs barrier, light protection or specialty lamination performance, you can explore our High Barrier Film and Aluminized PET Film options. CloudFilm helps buyers reduce trial-and-error by recommending a practical film structure before sampling.
