The difference between cling film and stretch film

The second type is polyvinyl chloride, which can also be used for food packaging; the third type is polyvinylidene chloride, which is mainly used for packaging of cooked food. Since the plasticizers used in PVC cling films have carcinogenic effects, and the production cost of PVDC is too high, most domestic cling films tend to use PE as raw materials.

Stretch film, also known as stretch film and heat shrink film, is the first in China to produce PVC stretch film with PVC as base material, DOA as plasticizer and 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 mainly LLDPE, including C4, C6, C8 and metallocene PE (MPE).

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