What are the criteria for calculating the strength of carton compression?

In the carton production industry, as we all know, the carton dynamic performance test applies to the packaging of some specific commodities, such as ceramics, glass products, electrical appliances, instruments, etc. If you want to test the buffer performance of the carton on the commodities, i.e., simulate the transportation, loading and unloading, vibration, fall and other tests. At the same time, it is also necessary to make a test of the strength of the carton, such as rupture strength test, puncture strength test, ring pressure strength test, and carton compressive strength test; among them, the carton compressive strength is the most important quality index required by the packaging of many commodities, the test will be placed between two corrugated cartons on the pressure plate, pressurized to the pressure of the carton crushing, that is, the compressive strength of the carton. The above is a partial overview of the quality testing of the carton production industry. Carton compressive strength test to understand the calculation of its strength value, about the carton compressive strength calculation basis and factors affecting Jiaxing Zhongbao Testing Instrument Equipment Co. We can calculate the carton compressive strength based on raw materials, predetermined carton compressive strength, should choose the appropriate carton board, corrugated cardboard to produce corrugated cartons, to avoid the waste caused by blind production; according to the ring compression strength of the raw paper to calculate the compressive strength of the carton there are many formulas, but the more concise and practical is the kellicutt formula, which is suitable for use in the estimation of the 0201 type of compressive strength of cardboard boxes. At the same time, the method of determining the compressive strength of cartons is particularly important. Due to the influence of various factors in the production process, the compressive strength of the carton produced from raw materials is not necessarily the same as the estimated results, so the final method to accurately determine the compressive strength of corrugated cartons is to use the carton compression tester to test the carton after wet processing at a constant temperature; for small- and medium-sized factories with no testing equipment, the carton can be covered with a wooden board, and then stacked with an equal amount of weights on the wooden board to roughly determine whether the compressive strength of the carton meets the requirements. Factors affecting the compressive strength of a carton are as follows: (1) Raw material quality Raw paper is the decisive factor in determining the compressive strength of a carton, as can be seen from the kellicutt formula. However, the influence of other conditions in the production process of corrugated cardboard is not allowed to be ignored, such as the amount of adhesive, flute height change impregnation, coating, composite processing treatment. (2) Moisture Cartons made of corrugated cardboard with high moisture content, or long time storage in a humid environment, will reduce its compressive strength. Fiber is a very absorbent, in the rainy season and the air humidity is large, the moisture in the cardboard and the moisture balance of the atmosphere is very important. (3) box type box type refers to the type of box and the same type of box size ratio, they have a significant impact on compressive strength. Some carton box body for double corrugated cardboard composition, compressive strength than the same specifications of the single-layer box significantly improved; under the same conditions, the higher the box body, the worse the stability, the lower the compressive strength. (4) Printing and opening Printing will reduce the compressive strength of the carton. Packaging of goods with air permeability requirements in the box surface holes, or in the box side punch cut hand holes, will reduce the strength of the carton, especially large open area, biased to a certain side, etc., the impact is more pronounced. (5) Processing technology deviation in the box making process improper pressure line, groove too deep, combined with not secure, etc., will also reduce the box compressive strength. The above is Jiaxing Zhongbao Testing Equipment Co., Ltd. technical staff of the professional answer, the company specializes in the production of various types of carton testing equipment, welcome new and old customers patronage!