Control elements of PE protective film transparency:
The transparency of the Pe protective film is related to whether the product can meet the quality requirements. This is very important. Here is how to control the transparency of the Pe protective film:
1.PE protective film is a crystalline material, which can be easily crystallized. If it is not cooled quickly, it will inevitably reduce transparency and elongation at break. Blow molding has poor cooling effect, high crystallinity, and low film transparency.
2. Due to blown-up and drafting, the molecular orientation is serious, resulting in low elongation at break; while the casting production has good cooling effect, low crystallinity, good transparency, and low orientation, so the elongation at break is high and the shrinkage it is good.
3. Need to add appropriate amount of anti-fog agent.
4. On the basis of the above, add a transparent nucleating agent.
5. In the selection of PE protective film raw materials, choose the one with low haze and the one with high melting index.
