Corrugated carton strength process guarantee

The strength of the corrugated box is not only guaranteed by the raw materials, but also the manufacturing process plays an important role. Because the corrugated paperboard is formed by the ingenious combination of face paper and core paper, the structure is very scientific and rational from the perspective of structural mechanics. Its mechanical structure is completed by the manufacturing process. Therefore, the manufacturing process has a decisive effect on the strength of corrugated boxes.

1. The quality of the base paper. Mainly, the tightness, basis weight, strength, moisture content, folding endurance, paper surface, rewinding end surface, etc. of the base paper must reach the specified quality index. Thus, the strength of the corrugated paperboard has the material basis.

2. The quality of corrugated board. Must be high-quality cardboard, well-formed, regular corrugated, firm bonding, smooth surface, etc.; cardboard neat, no shortage of material, trimming and trimming; moisture content is appropriate. High-quality cardboard from the single-sided cardboard, composite, cutting process should also be just right.

3. Print quality assurance. The main reason is that the embossing force should be appropriate and the corrugated can't be pressed down or collapsed. One test method is that the edge of the picture can not be printed with thick ink; the second is the feel, and the hand can not have depressions on the cardboard; the cardboard can not have any excess indentation.

4. Processing and molding quality. Such as indentation, slotting, nailing, etc., must be just right, in line with process regulations. Otherwise it will have an adverse effect on the strength of the carton.
5. Other artificial effects. For example, stepping, stepping, squeezing, pressing, bumping, injuring cardboard and carton during handling, loading and unloading will damage its strength.

Corrugated box strength verification

After the strength of the corrugated box has been designed and manufactured, whether it will achieve the intended goal or not will be verified by inspection. The ideal test method is to test the carton after constant temperature and humidity treatment. The simple verification method is that after the carton has been set in temperature and humidity, a wooden board is covered on the carton, and then a heavy object is pressed according to the design strength to verify whether it meets the design requirements. If it does not meet the requirements, it must be analyzed, studied and improved until it is up to the requirements.