The COF of PET film describes resistance when a defined surface starts and continues sliding against another surface. This reference applies to uncoated, coated, treated and PET-based protective film used in unwinding, slitting, laminating and die cutting. Each result must be read with its tested sides, method, load and conditioning history. Equipment compatibility, adhesive behavior and removal performance still require sample testing on the actual material and process.
COF of PET film is used to describe the friction behavior of polyester film surfaces during starting and sliding contact. In technical data, it is typically reported as static COF and kinetic COF under a defined method such as ASTM D1894 or ISO 8295. Public PET and polyester film datasheets show that reported values vary by grade, surface, and…
Conventional PET and BOPET films commonly show a polyester film melting temperature of about 245-260 C by DSC. The reported onset, peak, or endset varies with grade, orientation, thermal history, and scan conditions. Use it for base-film identification, not as a finished-film service limit. Confirm adhesive, coating, surface, dwell, and removal behavior under intended conditions.
A plastic film specified for electronics shipping should be approved against the actual contact surface, the role it plays in the ESD packaging system, and the condition expected at final removal. This guide applies to display modules, touch panels, HMI assemblies, printed overlays, coated housings, and other finished electronic products exposed to handling, storage, road, air, or sea transport. The main risks are scratching, trapped contamination, edge lift, film movement, charge generation, adhesive transfer, haze, coating disturbance, and difficult removal after extended dwell. Approval should therefore combine surface identification, packaging review, staged sample testing, transport simulation, and post-removal inspection rather than relying on one datasheet value.