4 Corrugated board production line
1, corrugated board machine
a, single-sided machine
b. Double-sided machine
The double-faced corrugated board machine has a heating section and a cooling section. It makes the single-sided corrugated cardboard and linerboard close together, and after heat processing into a single corrugated (three-layer) cardboard or double corrugated (five-layer) cardboard, and then sent to the separation of paper pressing machine.
c, sub-paper machine
d, cross cutting machine
2, corrugated board heating mechanism and steam
Heating and drying are of great significance both in the production of corrugated board for vintage single-machine and continuous corrugated board machines. The heating method is mainly steam drying, in addition, the drying of the corrugated board can also adopt natural drying, electrothermal drying, far-infrared drying, microwave drying and the like.
5, corrugated board adhesive principle
The connection between the linerboard and the corrugated medium is through adhesives. The adhesive is one of the main auxiliary materials in the corrugated board production process, and its quality directly affects the performance of the corrugated box. There are many types of adhesives, such as starch-based adhesives, polyvinyl alcohol, vinyl acetate emulsions, and sodium silicate. Starch series adhesives are widely used.
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