Various factors affecting the compressive strength of cartons date box

The compressive strength of corrugated box refers to the maximum load and deformation of the box body under the uniform application of dynamic pressure by the pressure testing machine.chocolate cake box

The anti-compression test process is divided into four stages: the first is the pre-loading stage to ensure that the carton is in contact with the pressure plate of the compression machine; the second is the stage when the horizontal pressure line is pressed down gift box chocolates, at this time the load increases slightly and the deformation changes greatly; The third is the compression stage of the side wall of the carton godiva chocolate boxes. At this time, the load increases rapidly and the deformation increases slowly. The fourth is when the carton is completely destroyed. This is the crush point of the carton.

The main factors affecting the compressive strength are as follows:luxury chocolate gift box

1. Cartons are made up of paper of various layers, and the reasonable collocation of paper is the basic condition to ensure the compressive strength of cartons.boxed chocolate candy

By testing the physical properties of paper at various levels, we can initially calculate the compressive strength of the carton, and then use the calculated compressive strength to control the compressive strength of the carton in each process in the production process.best chocolate gift box

2. The ring crush strength of paper is the key to ensure the compressive strength of cartons, but other physical properties of paper cannot be ignored.chocolate gifts box

When the tensile strength of paper, especially corrugated paper, is not enough costco chocolate box, the force value and deformation of the carton will increase steadily during the compression test box chocolate candy, the final value is high but the effective force value is very low, and the carton deforms like an accordion after the test . The waterproof performance of paper is also very important, especially the refrigerators have higher requirements on the waterproof performance of paper. Sometimes although the compressive strength of the carton is very high, because the paper is not waterproof, the carton is easy to absorb moisture when stored in the cold storage, causing the warehouse to collapse. 

3. The production process of the carton will also affect the compressive strength

According to the test, under the same conditions, the compressive strength of the carton will decrease by 90N-130N and the deformation will increase by about 2mm for every 1mm widening of the transverse pressure line of the carton. If the pressure line is too wide, the force value of the carton will increase slowly during the compression test, the effective force value will be small, and the final deformation will be large. In order to ensure the compressive strength, we should try our best to improve the production process and reduce the impact of each process on the compressive strength of the carton.

4. It is also critical to choose the appropriate flute type according to the carton type.

In people’s consciousness, it is often believed 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 amount of deformation. The larger the flute type, the greater the compressive strength of the carton and the greater the deformation; the smaller the flute type, the smaller the compressive strength of the carton and the smaller the deformation. If the carton is too large but the corrugation is small, the carton will be easily crushed during the compression test; if the carton is too small but the corrugation is large, the deformation will be too large during the compression test, and the buffering process will be long, which is effective The force value deviates too much from the final force value.

5. The influence of moisture on the compressive strength of cartons cannot be ignored.

The production environment, storage environment, use environment, weather, climate and other factors of the carton will affect the water content of the carton. In order to ensure the compressive strength of the carton, the influence of the external environment on the water content of the carton should be avoided as much as possible.