Corrugated board and production knowledge type and structure

1, the type of corrugated

Variety of corrugated cardboard

1, according to the number of structural layers
a, double layer
b, three layers
c, five layers
d, seven layers
2. Classified by purpose
a, inner packaging corrugated cardboard
b, outer packaging corrugated cardboard

2 Corrugated board structure

Corrugated cardboard is a base material for manufacturing various types of corrugated cardboard boxes. It is a plate-shaped material formed by bonding cardboard and corrugating medium. The structure is as follows:

Corrugated paper is processed from corrugated base paper. It requires uniform corrugated fiber structure, uniform thickness, no protruding hard block, tough paper, and certain pressure resistance, tensile resistance, anti-jamming and folding resistance. Water should be controlled at 8% to 12%. If the water content is too high, the paperboard will have problems such as soft paper, poor strength, poor pressure, poor adhesiveness, and lack of adhesion when the carton is processed. When the water content is too low, the paper will be brittle and the paper will tend to crack when pressed. . In addition, the fundamental difference between the production of corrugated board and corrugated paper and other papers is that neither the paper nor the corrugated paper is used in its own form, but only after it is processed into corrugated paperboard. The performance and use value, therefore not only in the physical properties and appearance to meet certain standards, but also has a good processing performance, such as high-speed adhesive adaptability.

(to be continued)