Chemical resistance PET film data is meaningful only when construction, reagent, concentration, contact method, temperature, and exposure time are defined. It applies to PET/BOPET base film, coated PET, and adhesive-backed protective film. Compare appearance, haze, mechanical retention, coating integrity, and peel behavior after exposure. Actual-substrate testing should confirm sensitive coatings, repeated cleaning, or delayed removal.
PET film puncture resistance describes how a defined PET, coated PET, or adhesive-backed PET construction responds to a controlled penetrating load. The result may include peak force, probe penetration, energy to failure, and the visible break pattern. These values support comparison of films exposed to sharp edges, local pressure, handling, or converting stress, but only under matched specimen and equipment conditions. Surface compatibility and removal behavior must be confirmed with the actual sample before full use. Puncture resistance is only one failure mode; the PET film properties comparison guide explains how to review tensile strength, elongation, thickness, shrinkage, optical properties, and surface behavior alongside puncture data.
A clear film to protect graphics should keep printed and display-facing surfaces visible while reducing scratches, dust, fingerprints, and handling marks during converting, assembly, storage, transport, or installation. Key risks are trapped particles, edge lift, adhesive transfer, ink lift, bubbles, haze, and appearance change after removal. Selection depends on contact surface, holding force, dwell, exposure, visibility, and removal stage. Because inks, coatings, acrylics, overlays, and display surfaces behave differently, representative sample testing is recommended when the surface, process, or protection time changes.
