The difference between heat shrinkable film and stretch film

Stretch film packaging and heat shrink packaging belong to the film packaging series on a large scale, but their packaging fields and packaging products are very different. Many customers who purchase stretch film do not know it well. The following author will share with you Here are the main differences between stretch film packaging and heat shrink packaging.　　 1. Heat shrinkable film is used in the sales and transportation of various products. Its main function is to stabilize, cover and protect the product. The shrink film must have high puncture resistance, good shrinkage and a certain shrinkage stress. During the shrinking process, the film cannot produce holes. Since shrink film is often used outdoors, it is necessary to add UV anti-ultraviolet agent.　　2. Stretch film, also called stretch film (stretchflm), is produced using imported linear polyethylene LLDPE resin and special tackifier additives. In the early domestic period, PVC was used as the substrate and DOA as the plasticizer to produce PVC stretch film with self-adhesive effect. Due to environmental protection issues, high cost (relative to PE's high proportion, less unit packaging area), poor stretchability, etc., it was gradually eliminated when the domestic production of PE stretch film was started from 1994 to 1995. The PE stretch film first used EVA as the self-adhesive material, but its cost was high and it had a taste. Later, PIB and VLDPE were used as self-adhesive materials. The base material is now LLDPE, including C4, C6, C8 and metallocene PE (MPE). 3. The shrink film should be used in conjunction with the heat shrink machine. The texture is relatively brittle. After the heat shrink machine is turned on, blow it against the shrink film, and the shrink film will shrink. If you operate it properly, it will look good; stretch film The texture is relatively soft, and it is used with a winding packaging machine.　　 The above is all the content, I hope everyone can bring some help, more knowledge about stretch film, welcome to call Wuhan Plastic Packaging Consulting, we will serve you wholeheartedly! Previous: POF shrink film application scope Next: Coca-Cola launched a new shrink film sleeve label, easier to recycle