White cardboard is generally divided into: blue and white single-sided double-sided copperplate paperboard, white copperplate paperboard, gray copper plate paperboard.
Single- or multi-layer bonded papers, which are made entirely with bleached chemical pulping and are fully sized, are suitable for printing and packaging of products, generally weighing more than 150 g/m2. The features of this paper jam are: high smoothness, good stiffness, clean appearance and good formation. Can be used for business cards, menus or similar products.
In the past, it was proposed to use quantitative as a benchmark to divide: paper, cardboard, and paperboard; white cardboard requires high whiteness, whiteness of A, etc. is not less than 92%, B, etc. is not less than 87%, and C, etc. is not lower than 82%.
White cardboard is a kind of white cardboard made from thick, solid and pure high-quality wood pulp. It is calendered or embossed and is mainly used for packaging and printing substrates. It is divided into A, B and C grades. At 210-400 g/m2. Mainly used for printing business cards, invitations, certificates, trademarks, and packaging and decoration.