Corrugated paper "inner paper rupture" refers to the phenomenon that the corrugated top and bottom are cracked, which is a common quality defect in production. It generally causes damages such as cardboard bursting and reduced side pressure. This article outlines the seven common causes of "inner paper rupture" and six solutions.
The seven major causes of corrugated paper "broken paper"
What is the phenomenon of corrugated paper "broken paper"
Corrugated paper rupture refers to the phenomenon that the corrugated top and bottom are cracked, which is a common quality defect in production. It generally causes damages such as cardboard bursting and reduced side pressure.
The seven major causes of corrugated paper "broken paper"
1. If the single corrugated surface is broken with glued surface: the gap between the pressure roller and the corrugated roller is too small. When the paper is bonded to the corrugated paper and the backing paper, the backing paper and the roofing paper will be squeezed and broken. If the temperature of the corrugated roller and the pressure roller are both high, the cracking of the tile paper will be relatively large, and at the same time, the inner paper will also be squeezed and broken to form a cracking phenomenon. The most common is that the inner paper has black lines.
2. The corrugated design is unreasonable: the combination of R and r cannot meet the needs of thick paper. This kind of situation is easy to appear on E flute and B flute. When producing high-gram paper, the corrugation is not easy to form, which will increase the pressure of the corrugated rod, which will cause the damage of the paper and the paper.
3. High-speed paper rupture in the new roller: the surface finish is not good, the rough surface leads to uneven pressure and causes rupture.
4. The inner paper is broken when receiving the paper: the tension of the tile machine is not timely controlled by the paper machine and the brake. When the moisture of the base paper is too large and the tension is too small, the corrugation is poorly formed, which causes breakage.
5. Without paper machine: the force of corrugated paper is relatively excessive.
6. Corrugated eccentricity is seriously unbalanced.
7. The inner paper is broken when the core is small: under the minimum braking condition, there is a possibility that the paper holder thimble is imbalanced and the machine is locked, causing the original paper to be too strong and broken.
Six countermeasures for paper breakage in corrugated paper
1. If the paper in the new roll high material is broken, check whether the Rr difference of the corrugated design is reasonable, and reduce the corrugated pressure appropriately.
2. The high-speed paper break of the new roller: the surface of the corrugated roller is re-polished.
3. The inner paper is broken when the roll is small: check the level of the ejector pin, whether the upper and lower slider keys are worn, such as the wear and tear, change or change in time, and at the same time, when the small roll is made, the ejector pin can be properly released.
4. The paper inside the paper picker is broken: adjust the parameters of the paper picker. In particular, the adaptability to low-gram weight and low-grade base paper, as domestic companies generally use low-gram weight or low-grade base paper to reduce costs, paper web creases, paper web tearing, tile collapse and other phenomena have followed. The current high The performance splicer greatly improves the adaptability to the base paper through paper web flattening technology, multiple buffer technology and small tension control technology.
5. The paper in the corrugated rubber surface is broken: the gap between the rubber roller and the corrugated roller can be readjusted. (Adjusted under heat engine condition)
6. Paperless machine: The operating staff must adjust the tension of the corrugated paper in time according to the diameter of the paper roll.
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