In order to make the surface of the plastic film have good ink adhesion and enhance the firmness of the printed matter, it is subjected to surface activation treatment before printing. Next, let's learn about the surface treatment and thickness of PE biodegradable plastic bag film.

1. Oil leaks from the surface of the plastic bag workshop of the CPE plastic bag factory. For the film with additives, during the printing process of light-controlled power supply, the additive part is easy to seep out, forming a layer of oil, ink, paint or other adhesives on the surface of the film, which is not easy to stick to the surface of this type of film.

2. During the printing process, due to the change of tension, the elongation of the film is within the allowable range of strength, and increases with the increase of tension, which makes it difficult for the accuracy of color printing overprint; because the plastic film is pervasive and non-polar Material, ink is not easy to dry, and these characteristics are not conducive to printing, so the plastic film must be surface treated before printing.

3. Most of the hygroscopicity is due to the expansion and contraction deformation caused by the relative humidity of the surrounding air, resulting in poor overprinting; ordinary PE cling film can reach 0.007MM. Due to the different automatic water spraying process, it is produced by stretching, and the plastic bag is different. Yes, the thinnest of general manufacturers can reach about 0.015MM, but general plastic bags are used in packaging products, etc., the thinnest is 0.025MM, if nothing can be placed on the film, the thickest PE plastic bag can reach 0.35 Around MM, it is no problem to store hardware in a thick plastic bag like this. Due to the limitation of raw materials, the thinnest PO plastic bag can reach 0.01MM, which requires very strict machinery and production technology, otherwise it cannot be produced, because this high-temperature material is closely related.

The above content is related to the surface treatment and thickness of the PE biodegradable plastic bag film. If you want to know more about the biodegradable plastic bag, you can contact the online customer service, and we will serve you wholeheartedly. .