Shrink Film Materials

Shrink film comes in various materials, commonly including polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), and polyester (PET). Polyethylene shrink film is widely used in the packaging industry due to its good flexibility, transparency, and heat-sealing properties. PVC shrink film is favored for its high shrinkage rate and good gloss, but its environmental friendliness needs to be considered. Polypropylene shrink film has a high melting point and chemical resistance, making it suitable for packaging in high-temperature environments. Polyester shrink film, with its high strength, high transparency, and good tear resistance, holds a place in the high-end packaging market. Different materials of shrink film have their own advantages and disadvantages in performance indicators such as shrinkage rate, tensile strength, and elongation at break, and the choice can be made according to specific packaging needs. For example, PVC shrink film is a good choice for packaging that requires high shrinkage rate and good gloss; while PP shrink film is more suitable for packaging that needs to withstand high temperatures and chemical corrosion.