High strength corrugated paper production line from waste paper
Using waste paper to produce high strength corrugated base paper is requirement for the development
of the market economy,but its production process is a complicated project,so all links from raw materials to pulping and
papermaking must be strictly controlled.The following briefly introduces the production method of high strength
corrugated paper production line from waste paper.
1.Waste paper pulping system
After waste paper pulping,the paper pulp enters the classification screen and is classified into two types of long
fiber and short fiber,the classification ratio of long fiber and short fiber is 5:5.
The long fiber is processed by at least through three-stage high density cleaner and two-stage fine screen treatment,
after disc thickener, send to double disc refiner and beating to make long fiber slurry; The short fiber is processed
by three-stage high density cleaner and low density cleaner,after disc thickener,then made into short fiber slurry.
2.Pulp residue pulping system
When the pulp residue is the tailings of the cleaning equipment, the pulp of the tailings of the sand remover is processed
by the first-stage low density cleaner and the third-stage low density cleaner; When the pulp residue is fine screen tailings,
the fine screen tailings pulp can be obtained by fine screen treatment of recovered fibers..
Mixing pulp is important in high strength corrugated paper production line from waste paper.
In the mixed fine pulp, the dry weight ratio of pulp pulp to long fiber pulp and short fiber pulp is: the total of
long fiber pulp and short fiber pulp is 40-90%, and the pulp residue pulp is 10-60%. Then make paper.
The mixed fine pulp is strengthened and dehydrated by fourdrinier corrugated paper machine wire section
, it is pressed in two passes, and then dried by a vacuum negative pressure drying device,finally to obtain high-strength corrugated base paper.
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