Guangdong Huaping Hygiene Material Industrial Co.,Ltd. main products include PE Film,PE breathable film,PE perforated film,Multicolor printed film,Nonwoven Laminated film,Anti-counterfeiting Holographic film etc .
In order to make the surface of the plastic film have good ink adhesion and enhance the firmness of the printed matter, the PE plastic bag is subjected to surface activation treatment before printing.
a. The oil layer on the surface of the CPE plastic bag factory seeps out. The film made with additives is easy to ooze out during the UV lamp control power supply printing process, forming a layer of oily layer, ink layer, paint or other adhesives on the surface of the film is not easy to firmly adhere to the surface of this type of film bonding;
b. Affected by the change of tension, during the printing process of the film, within the allowable range of strength, the elongation increases with the increase of tension, which brings difficulties to the accuracy of color printing overprint; because plastic film is a non-polar material , there is no capillary pores, and the ink is not easy to dry. These characteristics are not conducive to printing, so the plastic film must be surface treated before printing.
c. Hygroscopicity is mostly affected by the relative humidity of the surrounding air and stretches and deforms, resulting in poor overprinting;
The general PE plastic wrap can be 0.007mm, because the automatic spray gun process is different, it is produced by stretching, the plastic bag is different, the general manufacturer can be as thin as 0.015, but the general plastic bag is used for packaging products, etc. , so the thickness is 0.025MM. If it is thin, it will not be able to hold things. The thickness of the PE plastic bag can be about 0.35MM. It is no problem to put a hardware in such a thick bag. Due to material limitations, PO plastic bags can be as thin as 0.01MM, which requires very strict machines and production processes, otherwise they cannot be produced, because the temperature is closely related to materials.
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