In the process of production of single-sided corrugated machine, there are often some problems with corrugated board. How to deal with these common problems? Here we will understand the corresponding problems.
Single side corrugated machine
Bad adhesion
The paperboard is assumed to be degummed in a large area, and the cause of the attack is roughly as follows:
When the temperature of each roller does not reach the requirement, the speed will be improved. (Lift the tile paper to see the wet glue mark)
The viscosity of the adhesive is too low or the water ratio is too high, or the retention of the adhesive has deformed, the adhesive itself is not sticky.
Pressure of press roller is too low to press the base paper and tile paper tightly.
The adhesive is too viscous and turns into a paste at high temperature.
Cots and the lower corrugated roller scheduling is not parallel, a large head of a small open space. At this moment, you can loosen the cots first, and then adjust the dispatching screw at the bottom to the two parallel and then lock the dispatching nut. Tighten the cots, use the thickness gauge to measure the space at both ends, or investigate whether the amount of glue on both ends of cardboard is even.
The glue coating is too small. (starch solid content per square meter is not less than 4 grams)
The temperature is too high and the speed is too low. This phenomenon is false adhesive, opened the tile paper only to see the traces of glue, tile paper will be torn after all, no damage to the paper fiber.
Part of the guide paper is not aligned with the cots groove, resulting in the cots can not hit into the glue coating on the corrugating peak. At this moment should stop and adjust the guide paper from scratch.
The reason for the cardboard degumming at both ends is that the cots and the lower corrugated roller space is too small. When it is severe, the corrugation will crack. Cardboard such as some blisters, the cause of the attack may be:
Guide paper and lower corrugated roller space is too small, glue can not be coated on the corrugated paper.
There is a foreign body on the driving gear of the pressing roller and the lower corrugated roller, which makes the pressing roller unable to press the corrugated roller.
Cots roller and lower corrugated roller space is too large, part of the glue can not be coated.
Post time: Jun-28-2021