... test heat sealing temperature, pressure, speed of plastic film & plastic bag etc. Heat Sealing TesterStandards:ASTM F ... Filmsrigid films, shrik films, stretch films, plastic films, plastic composite films, paper-plastic composite films,aluminized films, aluminum foil, ... OPP, CPP, LDPE, BOPP* Sheetengineering plastics, rubber, waterproof building materials, and thermal insulation materials, e.g. PP, PVC ...