Home » Technical Support » Differences between Shrink Wrap and Stretch Wrap

The shrink wrap of brittle texture is to be used with the heat shrinking machine. When the machine blows, the shrink film will shrink. The stretch wrap of soft texture is wrapped around items in palletizing.

The shrink film is used in sales and transportation process of a variety of products. Its main role is to stabilize, cover and protect products. It must have high puncture resistance, good shrinkage and shrinkage stress. In the shrinking process, the film can not generate holes. As it is often applied to outdoor use, anti-UV agents need to be added.

The shrink wrap is widely used in outer packaging of food, medicine, disinfection tableware, stationery, craft gift, presswork, hardware and plastic products, electronic appliances and so on. It is especially used in the assembly packaging of irregularly- shaped goods. It can not only meet the functions of moisture and dust proof, anti-touch and substitution, and transparent display, but also increase the attractiveness of product appearance. It can also be used instead of various paper boxes, saving the cost of packaging, and conforming to the trend of packaging. The shrink film can be processed into flat pocket, arc-shaped, trapezoid, 3D and other irregularly shaped bags.

The stretch film features high tensile strength, large elongation, good self-adhesion and high transparency. With manual and machine types, it can be widely used in centralized packaging of various goods. It is mainly extruded by several different grades of polyethylene, having puncture resistance and high strength. It is used for wrapping around goods stacked on the pallet, making the packed goods solid, tidy and waterproof. It has been widely used in foreign trade, paper making, hardware, plastic, chemical, construction, food and pharmaceutical industry.

The stretch wrap can be added with tackifier to ensure broader use. It is made through heating, extruding, casting, and chill roll cooling, ensuring advantages such as high toughness, high elasticity, tear resistance, high viscosity, thin thickness, resistance to cold, heat, pressure, dust and water, single or double sided adhesion. In use, it helps to save material, labor and time.

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