Notes on cellophane

The effect of the change of the cellophane paper force, in the printing process, the film increases with the increase of the tensile force during the printing process, the accuracy of the color printing overprint is difficult, the tensile force is adjusted according to the type and the expansion ratio of the substrate material, for example, the expansion ratio of the PE film is relatively large, and the tensile force value should be small; for a plastic film such as paper or PET, OPP, or the like, the tensile force may be suitably large. the surface is smooth, no capillary pores exist, the ink layer is not easy to be fixed or fixed, and after the first color printing is finished, the ink which is easy to be overprinted by the next color is stuck out, so that the patterns and the characters are not complete, and the defects are caused.

After packing the article with it, it can be anti-rust, damp-proof and anti-pollution. However, the bopp cellophane film has the disadvantages that the longitudinal strength is large, the transverse strength is small, the tearing degree is poor, and the tearing of the glass paper is broken. The glass paper also has the hydrophilicity, so that the water can be absorbed, the adhesion is often caused after the water is treated, and the paper sheets can be easily adhered to the block after being heated. The glass paper is characterized in that the transparency is high, the glossiness is strong, the color of the printed image and text is particularly bright, the plastic film can not be achieved, the printing adaptability is good, no treatment is required before printing, the glass paper also has the antistatic treatment property, the dust is not easy to be adsorbed, and the occurrence of printing faults such as text and text and the like is avoided. but the moisture resistance is poor, the film Under the influence of temperature and humidity, easy deformation, resulting in printing graphics and text is not easy to set up