How is the transparency of the PE protective film controlled?

PE protective film about the transparency of products meet the quality, is here to protect the membrane manufacturers Kai membrane to introduce you is how to promote the transparency of PE protective film:

1.PE protective film is a crystalline material which is easy to crystallize. If it is not cooled rapidly, it will decrease the transparency and elongation at break. The cooling effect of blow molding is poor, the crystallinity is high, and the film transparency is low.

2., due to blow up and drawing, the molecular orientation is serious, resulting in low elongation at break, while the casting has good cooling effect, low crystallinity, good transparency and low orientation, so the elongation at break is high and the shrinkage is good.

3. need to add some anti fog agent.

4. on the basis of the above, add transparent nucleating agent.

5.PE protective film material selection, choose low fog, high melting fingers.