The classification of carton materials is as follows:

1. White board paper: White board paper is a kind of cardboard with a white and smooth front and a gray bottom on the back. This kind of cardboard is mainly used for single-sided color printing to make cartons for packaging, or for design, manual products.

2. Kraft paperboard: Kraft paperboard, called boxboard in my country, is one of the main paper types for carton paper. Domestic containerboard is divided into three grades: high-quality products, first-class products, and qualified products. The texture of the kraft paper must be tough, with high burst, ring crush and tear resistance, in addition to high water resistance.

3. Corrugated base paper: Corrugated base paper is one of the important components for the production of corrugated cardboard. Corrugated base paper requires good fiber bonding strength, smooth paper surface, good tightness and stiffness, and requires a certain degree of elasticity to ensure that the made carton has shock resistance and pressure resistance.