How to pay attention to the problem of box collapse in carton production?
How to pay attention to the problem of box collapse in carton production?
corrugated box factory
1.Control the use of base paper
Check the sizing of corrugated paper, and the effect of water absorption index on the base paper surface. If the sizing of the base paper is poor, the water absorption will be high, and it is easy to be affected by the low temperature and humid environment of the refrigerator, which will cause moisture regain, soften, and decrease the compressive strength of finishing.
flat corrugated boxes
2, control the moisture content of cardboard when producing cardboard
The moisture content of paperboard should not be too much, because the higher the water content, the lower the hardness of the paperboard, which affects the edge pressure index of the paperboard. In the process of cardboard processing, the amount of glue on the single-sided machine and double-sided machine can not be too large. Once the amount of glue is large, the corrugated shape of the cardboard will be deformed, and the shape of the corrugation directly affects the side pressure of the cardboard, the side pressure is reduced, and the compressive strength is also reduced.
custom corrugated shipping boxes
3, the adhesive strength of cardboard should be large
Adhesive strength is the adhesion of corrugated paper to liner and face paper. If the cardboard is sticky, the top or back paper will be separated from the corrugated paper after being pressed, then the compressive strength will decrease linearly.
double corrugated box
4. Gap pressure control in production should be moderate
In particular, it should be noted that the gap pressure on the glue box machine cannot be too small. The clearance pressure of the sun gear on the double-sided machine and die cutting machine should be controlled within a reasonable range to avoid crushing the corrugated shape and affecting the compressive strength of the cardboard.
double wall corrugated shipping boxes
5. Use water-repellent agent, waterproof varnish, etc. to solve the problem of surface waterproof and moisture-proof.
