Corrugated cartons are one of the most commonly used packaging products in our daily transportation. The physical performance parameters such as compressive strength and breaking strength of cartons directly affect the performance of packaging. The compressive strength refers to the maximum load and deformation of the box damage under the uniform dynamic pressure of the pressure testing machine. The compression test process is divided into four stages, respectively, the pre-load stage, to ensure that the carton and the compression machine pressure plate contact; when the transverse line is pressed down, its load increases slightly and its deformation is relatively large. In the stage of side wall compression, the load increases rapidly and the deformation increases slowly; finally, when the carton is entirely destroyed, the corresponding value is the crushing point of the carton. There are numerous factors that affect the compressive performance of the carton, so the next is a packaging box supplier tiny series for you to share.
First of all, the carton is composed of various layers of paper. The reasonable collocation of paper is the basic condition to ensure the compressive strength of the carton. Through the physical properties of each layer of paper testing, we can preliminarily calculate the compressive strength of the carton, and then through the calculated compressive strength, the production process of each process carton compressive strength control.
Secondly, the annular compressive strength of paper is the key to ensure the compressive strength of the carton, but the other physical properties of paper can not be ignored. When the tensile strength of paper, especially the corrugated paper, is not sufficient, the force value and deformation of the carton will be steadily increased in the compression test, the final value is extremely strong and the effectiveness value is extremely low, and the deformation of the box after the test is like an accordion. The waterproof performance of paper is also extremely vital, especially the refrigerator of paper waterproof performance requirements are higher, occasionally although the compressive strength of the carton is extremely strong, but because the paper is not waterproof, the carton stored in the cold storage is easily to absorb moisture, resulting in the collapse of the warehouse. Therefore, in the process of carton customization, we must communicate with the manufacturer about the use of the carton, so that the manufacturer can reasonably adjust the material selection and production process of the carton according to the demand.
And carton production technology will also have a certain impact on its compressive strength. The results show that under the same conditions, the compressive strength of the carton decreases by 90~130N and the deformation increases by about 2mm for every 1mm widening of the transverse press line of the carton. If the press line is overly wide, it will cause the force value of the carton to increase slowly in the compressive test, and the effective value to decrease, resulting in a large final deformation. Therefore, in order to ensure the compressive strength, we should try to improve the production process, and reduce the impact of each process on the compressive strength of the carton, in order to ensure that the carton to the packaged products play a due protective role.
And according to the box type of the box, choosing the right type of corrugated cardboard is also extremely key. People commonly think that the larger the corrugated shape is, the higher the compressive strength of the carton is, and it is easy to ignore the influence of the corrugated shape on the deformation amount. It is worth noting that the larger the cardboard type, the greater the compressive strength of the carton, the greater the deformation; the smaller the mold, the smaller the compressive strength of the carton and the smaller the deformation. But if the carton is overly large, the corrugated shape is extremely tiny, the carton is easy to be crushed in the compression test, that is, the compression performance of the carton is poor; the carton is too tiny, the corrugated shape is very large, the compressive test will cause excessive deformation, the buffer process is lengthy, the effective value and the final force value deviation is too large, and the test results are not accurate.
Finally, the impact of moisture on the compressive strength of the carton can not be ignored. The water content of the carton is one of the factors affecting the compressive performance. Therefore, the production environment, storage environment, use environment and other factors of the carton are closely controlled. Under normal circumstances, in order to ensure the performance of the carton, the influence of the external environment on the water content of the carton should be avoided as much as possible, and the cardboard with higher compressive strength should be selected for manufacturing when selecting materials.
Above is a tiny series of factors affecting the corrugated box compression performance of the simple sharing. Xiaobian thinks that as a carton manufacturer, we should try our best to improve product quality and escort our customers' products. This is not only the requirements of customers, but also the responsibility of an enterprise to establish a positive reputation and establish a solid brand concept.