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Shrinkage film packaging is generally used for industrial product packaging, with a wide range of applications, such as textiles, food, building materials, flooring, household appliances, etc. Its characteristics are dust prevention, aesthetics, good product firmness, and relatively low packaging costs; The main principle is that under the conditions of extrusion processing, the molecules of the contracted raw material are forced to coordinate and generate stress, which is locked inside the membrane. When the membrane is heated again, it will cause the elastic memory effect of the membrane, restore its original relaxation state, and make the membrane aesthetically shrink or wrinkle. The tension of the contracted membrane is used as the binding force of the packaging to achieve the effect of wrapping the item.
