What is the shrinkage of the protective film after die cutting
Jan 28, 2022
After punching the PE protective film, the product shrinks. This problem is often encountered in the die-cutting industry. The main problem of punching the PE protective film is the laminating. As long as the tension of the laminating is controlled, or the laminating twice is repeated To die cutting, the size of the product will not shrink severely.
In addition to the production of products, the protective film can also be used as an auxiliary material during production. It has a wide range of uses and a low price. The materials are mostly PET, PE, PVC. PET protective film is often double-layered. This kind of protective film with release film has good quality, uniform coating of the adhesive layer, high cleanliness of the adhesive layer, easy processing, and will not change much after punching. The processing environment requires high cleanliness.
The production of protective film is afraid of dirt and expansion and it is fatal. The former is caused by the production environment and can be improved, while the latter has a lot to do with the material. Just like the electrostatic protective film made of PVC, its expansion size can reach 0.4-1mm. When the die-cut product is pulled up, it will be found that the product shrinks in one direction and stretches in one direction, and it is not proportional. How to solve this headache, currently has to adjust the size of the die according to its characteristics.
