Protective Traceless Film for Bending metal plate(Non marking protective film) is an important auxiliary material in sheet metal bending processing, mainly used to prevent indentation or scratches on metal sheets during the bending process.
Core functions and principles:
① Buffer effect: By placing it between the workpiece and the corner of the lower mold, it offsets the mold pressure and avoids indentation caused by direct contact.
② Material characteristics: TPU or polyurethane materials are commonly used, which have both flexibility and wear resistance, and can withstand repeated bending.
③ Applicable scenarios: Especially suitable for precision machining of stainless steel, aluminum alloy, copper plate, as well as high demand fields such as aerospace and electronic appliances.