Surface finishing is to appropriately process the surface of the printed matter to improve the light resistance, heat resistance, water resistance, abrasion resistance, folding resistance and chemical resistance of the printed matter; increase the gloss and artistic sense of the printed matter; protect the printed matter And beautify the role of printed matter, increase the value of printed matter. The surface finishing methods of packaging products mainly include glazing (print varnish, coating hood varnish, matt varnish, UV varnish, water-based varnish, etc.), waxing, and laminating (glossy film, matt film) , Embossing, stamping, etc. After these surface treatments, the printed matter will have different degrees of hue and saturation changes, that is, differences in density. These changes can be divided into physical changes and chemical changes. The physical changes are mainly reflected in the increased specular and diffuse reflection capabilities on the product surface.
Generally speaking, the color density increases when the gloss film is coated, coated with varnish and UV varnish; the color density decreases when the matte film is coated and coated with matte varnish. The chemical changes mainly come from the organic solvents contained in the film glue, water-based varnish, and UV varnish, which will combine with the ink particles on the printed matter to change the color of the ink layer.
This machine is designed to manufacture square bottom paper bags without handles from paper roll, and it is an ideal equipment for producing small-size paper bags fast. By implementing steps including paper feeding, tube forming, tube cutting and bottom forming inline, this machine can effectively save labor costs. The equipped photoelectric detector can correct cutting length, so as to ensure cutting precision. The equipped SIEMENS PLC system ensures that the machine can perform quickly and stably. This machine can process very thin paper, as well as produce paper bags very fast, thus this machine is especially suitable for being applied in food industries
Paper Bag Machine,Paper Bag Making Machine,Bagging Machine,Food Paper Bag Machines
DongGuan FeiYang Packaging Machinery Equipment Co., Ltd , https://www.feiyang-machinery.com