Shrink Wrap Film

Haichina Machinery Co.,Ltd is one of the best shrink wrap film manufacturers and suppliers in China, equipped with productive factory, welcome to buy discount and high-quality packing film, wrapping film, bopp film products from us and check the price with us. Shrink wrap, also shrink film, is a material made up of polymer plastic film. When heat is applied, it shrinks tightly over whatever it is covering.Heat can be applied with a handheld heat gun (electric or gas), or the product and film can pass through a heat tunnel on a conveyor. A shrink film can be made to shrink in one direction (unidirectional or mono-directional) or in both directions (bidirectional). Films are stretched when they are warm to orient the molecules from their initial random pattern. Cooling the film sets the film's characteristics until it is reheated: this causes it to shrink back toward its initial dimensions.

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