... waterproof building materials, and thermal insulation materials, e.g. PP, PVC, PVDC, and nylon*Packagespaper, plastics, rubber, paper, paper-plastic ... ;4.Elegant appearance, accurate test data;5.Excellent performance of the start sealing temperature, sealing speed, heat sealing strength ... Certificate:Our customer:Our Laboratory: Our team: GBB-A Heat Sealing Tester(ASTM) for plastic heat seal testing