Polyethylene film packaging is so widely used, so how to buy PE protective film has become the most important issue. Today, Foshan PE protective film manufacturer-Chili Technology has compiled five techniques for purchasing PE protective film and shared To everyone! As follows:
This is difficult to recognize with the naked eye. It is measured by optical instruments. There is also a simpler method, which is to cut a small piece of polyethylene film and place it in the middle of the computer desktop, and then create a new blank on the computer. WORD document, check the whiteness of the blank WORD document in the area with and without the film on the computer or the area of the different film (professional speaking is called brightness). By comparing separately, you can choose the polyethylene film with good permeability.
