The transparency of Pe protective film is very important for whether the product can meet the quality requirements. Here, the protective film manufacturer ichuan film introduces you how to control the transparency of Pe protective film: 1.
PE protective film is a crystalline material that is 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 blow-up and drafting, the molecular orientation is serious, resulting in low elongation at break;
However, casting has good cooling effect, low crystallinity, good transparency and low orientation, so it has high elongation at break and good retraction. 3. Add an appropriate amount of anti-fogging agent. 4. On the basis of the above, a transparent nucleating agent is added. 5.
PE protective film raw materials are selected for low haze and high melt finger.