Corrugated board from the board after the assembly line should be as soon as possible into the next process, the longer the cycle, easy to absorb the water in the air and soften the soft.

In addition, in the printing, especially multi-color printing or large-scale printing, because the printing plate pressure, easy to cause the carton is soft.

Solution :As far as possible to shorten the carton in the production process of the residence time, to avoid exposure to humid air for too long and softened. The workshop should also be properly isolated from the outside, to avoid direct blown into the workshop.

Before printing to ensure that the hardness of corrugated board, printing to avoid excessive pressure. Die-cutting process as far as possible to avoid the use of a large pressure on the cardboard pressure round die-cutting process.

In short, the problem of softening the cartons, to the end or water problems.