As a high-quality paper material widely used in the printing and packaging fields, white cardboard is favored for its high whiteness and strength. According to different uses and characteristics, white cardboard can be divided into many types.
The first is blue and white single-sided and double-sided coated cardboard. This type of cardboard is made of fully chemically bleached wood pulp. The uncoated one is called Western cardboard, and the double-sided coated one is copper Western cardboard. It is mainly used for business cards, wedding invitations, postcards, cards, and book and magazine covers. The printing effect is exquisite, and it can present bright colors and clear details.
White-bottomed coated cardboard is also a common one. It is mainly used in the production of higher-grade paper boxes. The paper surface is high in whiteness and smooth, and the ink has good acceptability and glossiness. The paper back must also have the characteristics of high whiteness and good printability to ensure the quality of back printing. It is often used in high-grade paper boxes and vacuum blister packaging.
Gray-bottomed coated cardboard is unique. Its surface layer uses bleached chemical pulp, and the core layer and bottom layer are unbleached kraft pulp, groundwood pulp or clean waste paper. It is suitable for high-end paper box color printing, and has high quality requirements such as folding resistance, color printing effect, and elasticity. It is often used to make various paper boxes and hardcover book covers.
In addition, there is white card. It consists of three layers. The surface and bottom layers are white, smooth and flat, and can be printed on both sides. The middle layer is a filler layer. White card is hard, thin and crisp, and has a wide range of uses, such as making high-end packaging boxes, cigarette boxes, cups, etc.
Different types of white card paper have different focuses on use and performance, meeting diverse market needs.