As mentioned in our previous article, "what are the determinants of the compression resistance of vegetable packaging cartons?" Today, heavy cartons manufacturers take us to understand "why do heavy cartons deform? How to deal with it? ". Although the heavy-duty corrugated box is relatively resistant to pressure and wear, it is a box after all. Even if it is not affected by external damage during transportation, it is inevitable because of the soft collapse and deformation of long-term storage. In life, what will become the cause of heavy deformation of corrugated boxes?

　　重型瓦楞紙箱箱體變形的常見原因及處理方案

　　The common causes of the deformation of the heavy corrugated box and the treatment plan1.如果硬紙板含水量過多，就會導致硬紙板的硬度大大降低，還會影響硬紙板的邊緣壓力。

　　1. If there is too much water in the cardboard, the hardness of the cardboard will be greatly reduced, and the edge pressure of the cardboard will also be affected.

　　2.重型瓦楞紙箱的外形。瓦楞的形狀有U形、V形和UV形。U型瓦楞紙具有良好的彈性，高的延伸性和吸收性，但強度不穩定。v型瓦楞附著力差，易剝落和分離，但強度高。通常建議使用UV表單，正如其名稱所暗示的那樣，將U和V表單的優點結合在一起。

　　2. Shape of heavy corrugated box. The shapes of corrugations are U-shaped, V-shaped and UV shaped. U-shaped corrugated paper has good elasticity, high extensibility and absorption, but its strength is not stable. V-type corrugated has poor adhesion, easy peeling and separation, but high strength. UV forms are generally recommended, as their names imply, to combine the advantages of u and V forms.

　　3.紙板粘合強度要大。瓦楞紙與面紙之間的相互粘接稱為紙板粘接強度。如果出現假粘連的現象，其沉重的瓦楞紙箱的壓縮程度也會下降，瓦楞紙板在壓縮時會被層層分隔開來。

　　3. The bonding strength of paperboard shall be large. The mutual bonding between corrugated paper and face paper is called board bonding strength. If the phenomenon of false adhesion occurs, the compression degree of the heavy corrugated box will also decrease, and the corrugated board will be separated layer by layer during compression.

　　4.使厚瓦楞紙板的層數合理化。合理的層數設計可以提高紙箱本身的抗壓性能，不合理的層數設計自然會增加紙箱的破損率。建議根據產品的包裝、重量、儲運條件、堆高、儲存時間等特點，考慮設計板的層數。

　　4. Rationalize the layers of thick corrugated board. Reasonable layer design can improve the compression performance of the carton itself, and unreasonable layer design will naturally increase the damage rate of the carton. It is suggested to consider the number of layers of the design plate according to the characteristics of the product, such as packaging, weight, storage and transportation conditions, stacking height, storage time, etc.

　　5.在生產過程中，應注意控制紙箱與機器之間的壓力。為了避免出現瓦楞坍塌、變形等情況，降低紙箱的受壓程度。

　　5. In the production process, pay attention to control the pressure between the carton and the machine. In order to avoid corrugating collapse, deformation and other situations, reduce the compression degree of cartons.

　　常見的變形原因有重瓦楞紙箱和處理方案這些都是重型紙箱廠家小編通過材料查看整理出來的，如果你有更好的方法，歡迎指正!

　　Common causes of deformation are heavy corrugated boxes and processing plans, which are all made up by heavy-duty box manufacturers. If you have a better way, please correct!