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1. Polishing: Apply polishing varnish to the printed product, and then roll it with a smooth stainless steel plate under high temperature conditions. A special sander is required.
2, over oil: printing machine (offset, gravure, silk screen, etc.) printing oil on the surface of the printed product.
3, UV: UV in the printing industry generally refers to UV ink or varnish. When the ink is printed, it is irradiated by a special ultraviolet lamp, and it is dried instantly, solving the problem that some materials (such as gold cardboard, plastic sheets, etc.) are not dried after printing. Printing UV inks requires special offset printing machines. Generally, offset printing machines cannot print UV inks.
4, local UV: generally refers to the use of screen printing UV varnish, this varnish effect is like a transparent film on the printed product, very beautiful.
5. Scrub: It is a kind of process in screen printing. The effect printed on it is like sand, especially on gold and silver cardboard.
6, surface waxing: the surface of the product packaging wax, mainly to make the package can withstand a certain amount of moisture and moisture, used to be used for the packaging of fresh meat and agricultural by-products. This is done on the curtain coater to complete its waxing process.
7. Film lamination: After the packaging product is printed, a plastic film such as propylene is applied to the surface of the printed matter, and the adhesive is heated and pressed to bond them together to form a printed or plastic printed product. The film can be classified into a coating film and a pre-coating film. That is, the coated film is coated with a binder at the time of operation, and then hot pressed to obtain a finished product. The pre-coating film is prepared by pre-coating the adhesive on the plastic film, and drying and winding. When the surface of the printed product is covered, it is only required to be hot pressed. They are completed on ready-to-coat straw and pre-coated straw.
8. Other special treatment technologies: There have been many special post-printing special treatment technologies in recent years, and the development is also faster. Commonly used are surface glue (also known as spray glue), embossed embossing, pressure protrusion (concave) or simply press shape. All of these new post-press finishing techniques have been seen on high-end packaging for everyday use. Especially beautiful crafts, cigarettes are common on cigarettes.
