One is PE. This kind of film is mainly used for heavy objects. It is basically used for optical cables, pipes, and cola packages. Most of them come out as stocks. The inspection specification also depends on the transparency and purity. Is the film uniform?
The second type is POF. This kind of shortening film is made of pressed rock. Usually, it is a bag. If the tube is used, the order quantity should be several tons or more. Conventional color: bright. Can print according to demand. Products are mainly used in medicine, cosmetics, disinfection tableware and other packaging. Inspection specification: Is it an opening when shortened? Is the print faded? Brightness?
Th third kind of PVC, this shortening film is blown, usually comes out of the coil, (can also be made according to customer needs to make a bag or cut into a single search tube) color is commonly used in sapphire blue and light green . The thickness is usually 5 filaments. PVC film is currently the most widely used film material. It is inexpensive, the temperature is shortened, and the demand for heat sources is not high. The primary processing heat source is hot air, infrared light or a link between the two. However, PVC is difficult to recover, and it produces toxic gas when it is burned, which is not conducive to environmental protection. It has been banned in Europe and Japan. The first thing to look at is: the degree of transparency, gloss, and whether there is a knot in the film? Is the film uniform?
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