Packaging film is a flexible film material primarily manufactured from resins such as polyethylene (PE), BOPET, BOPP, and CPP. Classified as an industrial packaging product, it is widely used for the transport and protective packaging of goods across sectors including food, pharmaceuticals, textiles, construction materials, chemicals, and cables. Common varieties include stretch film, shrink film, and composite film, catering to needs such as preservation, load stabilization, and protection against moisture and dust.
These films secure and stabilize loads through stretching and compression; they offer puncture resistance, waterproofing, and high recovery force, making them suitable for wrapping irregularly shaped items. The surface layer blocks contaminants and dissipates external impact forces, while certain types utilize multi-layer co-extrusion technology to enhance oxygen barrier properties for food preservation. Compared to traditional packaging methods, these films reduce costs by 15%–50% while improving transport efficiency and protection levels. Production processes include blown film extrusion, cast film extrusion, and composite printing, utilizing materials such as PVC, PE, and PET; select products comply with national standards such as GB/T 10457-2021.