Performance of PVC heat shrink film

PVC heat shrinkable film is widely used in the overall packaging of aluminum profile packaging, door and window packaging, wine, canned food, mineral water, various beverages, fabrics and other products. PVC heat shrinkable film is deeply loved by everyone to enhance its heat resistance, toughness, ductility and other characteristics. It is one of the popular and widely used materials of the moment.

Performance of PVC heat shrink film

(1) Shrinkage performance

Various shrink films for packaging have different shrinkage rates and shrink strengths. That is, it has certain shrinkage characteristics. Depending on the type of polymer used and the processing conditions, the shrinkage characteristics are different. Shrinkage, total shrinkage, and orientation are the main indicators of shrinkage characteristics.

(2) Shrinkage temperature and heat sealing performance

Most heat shrink wraps are first heat sealed and then reheated. Films and seals must withstand a certain amount of tension during shrinkage, so the film should have sufficient heat sealing strength and tensile strength.

(3) The heat sealing temperature and shrinkage temperature of the film should be controlled.