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1. If the single corrugating is on the glue surface, the gap between the pressure roller and the corrugating roller is too small. When the paper is bonded with the inner paper, the inner paper and the corrugated paper will be crushed and broken. If the temperature of the corrugating roller and pressure roller is high, the corrugated paper will be cracked greatly. At the same time, the inner paper will be squeezed and cracked, forming a fracture phenomenon. The common phenomenon is that the inner paper has black lines.

2.楞型设计不合理：R和r的配合不能适合厚纸的需求。这类情况容易在E楞和B楞上出现，生产高克重的瓦纸时，瓦楞不容易成型会增加瓦楞棍压力，从而导致瓦纸破裂损伤致里纸现象。

2. The corrugation design is unreasonable: the matching of R and R can not meet the demand of thick paper. This kind of situation is easy to appear in e-corrugation and b-corrugation. When producing high gram weight corrugated paper, the corrugation is not easy to form, which will increase the pressure of the corrugating rod, resulting in the breaking and damage of the corrugated paper.

3.新辊高速里纸破裂：表面光洁度不好，表面粗糙导致压力不均匀引起破裂。

3. New roll high-speed inner paper cracking: poor surface finish, surface roughness, resulting in uneven pressure, resulting in cracking.

4.接纸时里纸破裂：接纸机和制动器配合对瓦纸的张力控制不及时，当原纸水分过大，张力过小导致瓦楞成型不良，从而引起破裂。

4. The inner paper is broken when receiving paper: the paper receiving machine and the brake do not control the tension of the corrugated paper in time. When the water content of the base paper is too large and the tension is too small, the corrugating forming is not good, resulting in cracking.

5.无接纸机的：瓦楞纸张力相对过大。

5. No paper machine: corrugated paper tension is relatively large.

6.瓦楞偏心严重失衡。

6. Corrugated eccentric serious imbalance.

7.小卷芯时里纸破裂：在制动*小的情况下，有可能纸架顶针不平衡机械抱死，导致原纸张力过大而破裂。

7. The inner paper is broken when the core is small: when the brake * is small, it is possible that the paper holder thimble is unbalanced and mechanically locked, resulting in the rupture of the base paper due to excessive tension.