What are the printing surface treatments

The common surface treatment methods of printed materials generally include the following methods: first, polishing: coating polishing oil on printed materials, and then rolling with smooth stainless steel plates under high temperature conditions, requiring a special polishing machine. 2、 Oiling: use printing machine (offset printing, gravure printing, silk screen printing, etc.) to polish the surface of printed matter. 3、 UV: UV generally refers to UV ink or varnish in the printing industry. This kind of ink will dry instantly after being illuminated by a special UV lamp when printing, solving the problem that some materials (such as gold cardboard, plastic sheet, etc.) will not dry after printing. The printing of UV ink requires a special offset press, which cannot print UV ink. \X0d  x0a  x0d  x0a IV. Local UV: Generally, it refers to screen printing UV varnish, which is as beautiful as covering a transparent film on a printed product. 5、 Frosting: It is a process in screen printing. The printing effect looks like sand, especially on gold and silver card paper. 6、 Waxing on the surface: Waxing on the surface of the product packaging is mainly used for packaging fresh meat and agricultural and sideline products in the past to enable the packaging to withstand certain moisture and moisture. This is done on the curtain flow coater. 7、 Film covering: After the packaging products are printed, the plastic films such as propylene are covered on the surface of the printed products, and the adhesive is used to bond them together after heating and pressurizing to form a printed product that combines paper and plastic Lamination can be divided into instant coating and precoating. Namely, the coating film is applied with adhesive during the operation, and then the finished product is obtained by hot pressing. Precoating and laminating is to precoat the adhesive on the plastic film, dry and roll it up, and then cover the surface of printed products by hot pressing. They are respectively completed on instant coated straw and pre coated straw. 8、 Other special processing technologies: In recent years, there are many post press special processing technologies for printed materials, which have developed rapidly. The common ones are surface gluing (also called glue spraying), embossing, embossing (concave) or simply shaping. All these new post press finishing technologies have been seen more on high-end packaging in daily use. Especially on exquisite handicrafts and cigarette packaging