White cardboard is generally divided into: blue and white single-sided copperplate paperboard, white copperplate paperboard, gray-bottom copperplate paperboard.
Single or multi-layer bonded paper made entirely of bleached chemical pulp and fully sized, suitable for printing and product packaging, generally at a basis weight of 150 g/m2 or more. This type of paper jam is characterized by high smoothness, good stiffness, a neat appearance and good formation. Can be used for business cards, menus or similar products.
In the past, some people planned to use quantitative basis as the basis: paper, cardboard and cardboard; white cardboard has high requirements on whiteness, whiteness of A and so on is not less than 92%, B is not less than 87%, and C is not lower than 82%.
White cardboard is a kind of white cardboard made of thick and solid pure wood pulp. It is calendered or embossed. It is mainly used for printing and printing substrates. It is divided into A, B and C grades. At 210-400g/m2. Mainly used for printing business cards, invitations, certificates, trademarks, and packaging and decoration.
White cardboard is a kind of paper that is firm and thick. In the past, it was intended to be based on quantitative basis: paper, cardboard and cardboard.
In the early years, the white thick paper with a basis weight of about 200g/m2 was smoothed on the Shanghai shopping mall. After calendering, the stiffness was higher. Some people also called thin cardboard.
Blue and white double-sided copper plate jam
It is made of fully chemical bleached wood pulp with a basis weight of about 150 g/m2. The uncoated ones are called the sika paper, and the double-coated ones are the copper sika.
Main use: Sika paper is mainly used for business cards, wedding invitations, postcards, cards, data cards. Copper Sika is mainly used for book covers, postcards, cards, wedding invitations, merchandise tags, cosmetics and other necessities.
White copper plate paper
The white copper card is mainly used in the production of higher-grade paper boxes, so the paper surface must have high whiteness, smooth paper surface, good ink acceptance, and good gloss.
Main use: a variety of high-grade carton, vacuum blister packaging.
Gray bottom copper paper jam
The surface layer uses bleached chemical pulp, and the core layer and the bottom layer are unbleached kraft pulp, ground wood pulp or clean waste paper, which attaches great importance to folding resistance, color printing effect and stretchability.
Main use: Suitable for making all kinds of carton and hardcover book covers.
The white card consists of three layers: the surface layer and the bottom layer are white, smooth and flat, and can be printed on both sides; the middle layer is a filler layer, and the raw materials are poor. The white card is harder, thin and stiff.
Main uses: all kinds of high-end packaging boxes, cigarette cases, cups, children’s books and so on.
A kind of paper produced by multi-roll calendering has high purity of paper surface, relatively uniform ink absorption, and good folding resistance. It is mainly used for commodity packaging boxes, product linings, and picture wall charts.
The whiteboard paper has small stretchability, toughness, and is not easy to break when folded. It is mainly used for printing packaging boxes and commodity sulphonated backing paper. In book binding, medium-sized paper (ridges) or cover for spine and hardcover books for wireless binding. There are special and ordinary, single-sided and double-sided points. According to the bottom layer, there are two kinds of gray bottom and white bottom.
Main uses: printing business cards, certificates, invitations, covers, calendars and postal postcards.