Corrugated box test parameters
    Corrugated cardboard box general test index parameters (stacking test and vertical impact drop test)
There are two types of corrugated box type tests. Stacking test and vertical impact drop test.
   According to the test rules, a type test is required when the following conditions occur:
   1 Changes in the raw materials, design structures and processing techniques used to make corrugated boxes;
   2 The supply and demand parties shall request in the processing contract;
   3 When other situations require type testing.
   For type test according to the provisions of GB4857.2 , the selected sample needs to be treated under the environmental conditions of temperature 23 ± 2 °C, relative humidity 50 % ± 5 % for 24 hours, and tested under such environmental conditions.
One, stacking test
   The stacking test is actually also a stress test. The selected sample box is placed on a horizontal plane and a standard weight load calculated on the top of the corrugated box sample is applied to the plate. According to the rules, observe the actual carrying capacity of the sample box within 24 hours.
   Stacking test standard weight value calculation formula:
M0=k ( H/h-1 )× M1 ...
   Where: M0- Total stacking mass applied on corrugated boxes, kg
M1 - single package gross weight; kg
H : - stacking height; m
h : - corrugated box scale; m
k : - coefficient of deterioration (see Table 25)
H/h : - Number of rounds (rules see requirements for pressure test)
   The basic rules for stack height test:
   1 Select a good horizontal plane for the test, and at the same time require firmness and meet the stacking area of ​​the tested sample box;
   2 They must be filled with physical or simulated objects. When using simulated objects, they must be close to or similar to the actual object.
   3 Assemble the measured tank body according to the conventional requirements;
   4 Register the sample box for the test.
   The duration of the stack height test (see Table 26):