Coated paper is also called printing coated paper. Apply a layer of white paint on the surface of the base paper, which is pressed by super calendering. There are two kinds of paper: one side and two sides. The paper has smooth surface, high whiteness and good ink absorption performance. It is mainly used for fine line printing such as offset printing and gravure printing, such as advanced picture books, calendars, illustrations of books and periodicals, etc. The disadvantage is that the powder is easy to bond and fall off after being wet, and it is not easy to preserve for a long time.

We use a lot of paper in our daily life. Do we know how paper is made? What is the raw material of paper?

Many parents now choose thick diapers. They feel that if they use more thick materials, they can wash more water. This is a wrong idea. We should know that the water absorption of diapers mainly depends on the polymer resin, SAP. This kind of thing can expand the water of the body 400 times. A polymer the size of a fingernail can absorb a whole glass of water.

In recent years, with the improvement of people's awareness of environmental protection and the improvement of flexo printing technology, flexo printing, a new printing method, is being recognized by more and more people. It can also be said that the development of flexo printing in China has ushered in spring. However, some problems in flexo printing also perplex flexo printing peers.