... brittle and can't endure violent impact, extrusion, etc. Stretch film keeps good performance, and its relaxation degree is ... brittle and can't endure violent impact, extrusion, etc. The stretch film has the ductility and malleability, moderate ... odorous gas is produced during heat sealing operationThree Types applicable:Single Wound, Center Folded, Tubular PVC Heat shrink film for food packing