Carton inspection standard compressive strength

The compressive strength of the carton is the most important quality index required by many commodity packaging. During the test, the corrugated carton is placed between the two pressure plates and pressed to the pressure when the carton is crushed, which is the compressive strength of the carton, expressed in KN. 1. The compressive strength of the predetermined carton The carton requires a certain compressive strength, because the carton stacked on the lowest layer is subjected to the pressure of the upper carton during the storage and transportation process after packaging the goods. In order not to collapse, it must have suitable resistance Compressive strength, the compressive strength of the carton is calculated by the following formula: P=KW (n-1) where P---- the compressive strength of the carton, NW----the weight of the carton after loading, Nn----heap Stacking layer number K---- stacking safety factor The stacking layer number n is calculated according to the stacking height H and the height h of a single carton, n=H/h The stacking safety factor is determined according to the number of layers of the cargo stacking, the national standard Provisions: Storage period is less than 30d, take K=1.6, storage period is 30d-100d, take K=1.65 , corrugated base paper to produce corrugated boxes to avoid waste caused by blind production; there are many formulas for calculating the compressive strength of the carton according to the ring compressive strength of the base paper, but the more concise and practical one is the kellicutt formula, which is suitable for estimating 0201 type carton. Compressive strength.