If corrugated cardboard is flattened, it will seriously affect the pressure transformation of the cardboard, and it will also directly affect the compression resistance of empty cardboard boxes. There are many reasons for cardboard flattening, and the following will analyze and solve them one by one.
reason
1. The corrugated rollers are not parallel (the corrugated rollers are inclined);
2. The corrugated height is low, or the corrugated roller is worn;
3. Corrugation is formed and then flattened;
4. Excessive tension on the core paper roll;
5. Due to the spray device spraying too much steam, the core paper is too wet;
6. The gluing device causes corrugated flattening at any bite point;
7. Uneven tension between the upper and lower conveyor belts of the double-sided machine (inclined corrugated);
8. Low and flattened corrugated;
9. The compressive value of the core paper is too low.
measures
1. Adjust the corrugated roller to be parallel;
2. Replace the corrugated roller;
3. Check, adjust, or repair all bite points that may cause flattening and corrugation, such as the cross cutting blade guide roller, pressure roller, or hot plate pressure system not being parallel or improperly adjusted in position, or excessive pressure applied, tension on a single side of the paper on the overpass, or problems with the lifting conveyor belt;
4. Reduce the braking of the original paper holder; Check the position of the preprocessor;
5. Reduce the amount of steam sprayed on the core paper;
6. Reduce the adhesive gap between single-sided cardboard and surface paper;
7. Keep the conveyor belt speed consistent;
8. Check the factors that cause the flattening of the corrugated board after its formation, and investigate the reasons for the tilting of the corrugated board;
9. Exchange the core paper roll and discuss with the original paper supplier.
