When users purchase stretch films, they must compare the inspection (inspection and test) standards and purchase products that meet environmental and health standards. Rewinding is mainly carried out in accordance with the requirements of the customer. This is generally the width has been determined, and it is a conventional specification. It is rewinded according to the weight required by the customer. The general weight is 3kg, 5kg and so on. These are Hand stretch film, and machine stretch film, are above 10kg. Therefore, in the production process, we should strictly follow the production requirements. Now many e-commerce companies and logistics industries are slowly inseparable from this kind of packaging film. PE stretch film is suitable for logistics packaging, transportation packaging, industrial packaging and other industrial applications, but it is used to package our food, when you use it directly If the PE wrap film is in contact with food, long-term ingestion will cause food poisoning, so PE wrap film is not the same as the plastic wrap we usually use and package food. First of all, what we do is to test the pressure of the stretch film. The pressure test of the stretch film includes the pressure test of the film product and the pressure test of the film channel system. Stretch film is still used more in people's lives, we often use it to pack or cover some items. MPE is a highly stereoregular polymer with a narrow molecular weight distribution, which can control the physical properties of the polymer, thereby further improving the performance of the polymer. In the process of transportation, it is better to fix the stretch film, do not let it roll, and reduce the damage during transportation.