影响纸箱抗压强度的因素
1、原材料质量
原纸是决定纸箱压缩强度的决定性因素，由kellicutt公式即可看出。然而瓦楞纸板生产过程中其他条件的影响也不允许忽视，如粘合剂用量、楞高变化浸渍、涂布、复合加工处理等。
2、水分
纸箱用含水量过高的瓦楞纸板制造，或者长时间贮顾在潮湿的环境中，都会降低其耐压强度。纤维是一种吸水性很强的，在梅雨季节及空气中湿度较大时，纸板中水分与大气环境的湿平衡关系很重要。
3、箱型
箱型是指箱的类型和同种类型箱的尺寸比例，它们对抗压强度有明显的影响。有的纸箱箱体为双层瓦楞纸板构成，耐压强度较同种规格的单层箱明显提高;在相同条件下，箱体越高，稳定性就越差，耐压强度越低。
4、印刷与开孔
印刷会降低纸箱抗压强度。包装有透气要求的商品在箱面开孔，或在箱侧冲切提手孔，都会降低纸箱强度，尤其开孔面积大，偏向某一侧等，影响更为明显。
5、加工工艺偏差
在制箱过程中压线不当，开槽过深，结合不牢等，也会降低成箱耐压强度。
Factors affecting the compressive strength of cartons
1. Quality of raw materials
Base paper is the decisive factor to determine the compression strength of cartons, which can be seen from kellicutt formula. However, the influence of other conditions in the production process of corrugated board should not be ignored, such as the amount of adhesive, the change of corrugated height, impregnation, coating, composite processing and so on.
2. Moisture
Cartons made of corrugated cardboard with high moisture content, or stored in a humid environment for a long time, will reduce their compressive strength. Fiber is a kind of water absorbent. In the rainy season and when the humidity in the air is high, the moisture balance between the water in the paperboard and the atmospheric environment is very important.
3. Box type
Box type refers to the type of box and the size ratio of the same type of box, which have a significant impact on the compressive strength. Some cartons are made of double-layer corrugated cardboard, and the compressive strength is significantly higher than that of single-layer cartons of the same specification; Under the same conditions, the higher the box, the worse the stability and the lower the compressive strength.
4. Printing and tapping
Printing will reduce the compressive strength of cartons. Opening holes on the case surface or punching handle holes on the side of the case will reduce the strength of the carton, especially if the opening area is large and tends to one side.
5. Process deviation
In the process of making boxes, improper pressing, too deep slotting, and poor bonding will also reduce the compressive strength of boxes.
