Cartons are the most widely used packaging products. According to different materials, there are corrugated cartons, single-layer cardboard boxes, etc., with various specifications and models. Cartons are commonly used in three or five layers, and seven layers are seldom used. Each layer is divided into lining paper, corrugated paper, core paper and face paper. Inside and face paper are tea board paper, kraft paper, and the core paper is corrugated paper. The color and feel of all kinds of paper are different.

Corrugated board is made of face paper, lining paper, core paper and corrugated paper processed into corrugated by bonding. According to the demand of commodity packaging, corrugated board can be processed into single-sided corrugated board, three-layer corrugated board, five layer, seven layer, eleven layer corrugated board. Different corrugations have different functions.