Corrugated boxes, color box as a product during transport in the main "protectors", the strength performance is crucial, in general, depending on the quality and grade of paper, paper quantitative characteristic corrugated flute corrugated board thickness and moisture content. Therefore, to improve the corrugated box, box of strength, there are several points need special attention. ① Select the quality level and quantitative high base paper, such as high performance requirements for the protection of the packaging, may be considered high-strength corrugated cardboard, paperboard; ② rational design carton, box structure, such as for non-pressure product, Do not carton, box design specifications too large; ③ according to the characteristics, reasonably determine flute corrugated board, wave, layers and thickness; ④ focus on the rational design of corrugated production process to ensure strength paperboard molding; ⑤ use of waste paperboard partitions, Corner, gaskets, full use of resources to improve the secondary carton, box strength.
In fact, corrugated boxes, folding carton strength index is not a constant "absolute value", with changes in ambient temperature and humidity conditions, corrugated box, box moisture content will change, leading to corrugated boxes, color box compressive strength indicators appear unqualified "strange" situation. I deeply understands, once in the rainy season, the author of the drying step after printing companies printed beer cartons compressive strength index tests at the factory, the display result is qualified, have been tested frequently but after sending customers compressive strength index failed cases, and found the main reason is too much humidity, logistics vehicles tightness caused by poor transport cartons absorbent and waterproof paper made box is not good enough and so on. Seen in the design of corrugated box, box compressive strength of time, but also pay attention to the production environment, a combination of factors logistics and transport conditions and water absorption of paper and the like.