Some carton enterprises do not select the guide block support sample when testing the edge pressure strength, which simply forms the tilt phenomenon in the sample pressure process, and the data is low. The correct method is to place the sample on the urgent central plate test instrument to support the sample of the guide block. The surface of the sample is perpendicular to the pressure plate, and the pressure of moving the guide block is close to 50 N until the sample collapses, and record the maximum pressure that the sample can bear.

　　对具有断裂强度的试样分别从正、负、负、负、负四个角度进行检测。然而，一些企业在测试时没有考虑样品的角度。实际上，在试验实践中，正横、负横、正横、负横四个不同角度的试验结果有时相差很大。

　　The samples with fracture strength were tested from four angles: positive, negative, negative, negative. However, some enterprises did not consider the angle of samples when testing. In fact, in the experiment practice, the test results of positive horizontal, negative horizontal, positive horizontal and negative horizontal are sometimes quite different.

　　在进行断裂强度试验时，应抛弃二次爆炸声数据或试样有明显滑移时的数据，分别测量试样的正、负向。在正常情况下，应检查更多的异常检验数据，以验证检验效果是否属于偶然现象，避免形成错误判断。

　　When carrying out the fracture strength test, the data of the secondary explosion sound or the data of the specimen with obvious slip shall be discarded, and the positive and negative directions of the specimen shall be measured respectively. Under normal circumstances, more abnormal inspection data should be checked to verify whether the inspection effect is accidental and avoid wrong judgment.

　　纸箱抗压强度测试时，不封箱检查，测试数据较低。正确的方法是先将样品箱三维封口，用封口胶带封口，然后将样品箱放在反压试验机压板中间，以标准速度加压，直纸箱压碎。

　　When testing the compressive strength of cartons, they are not sealed for inspection, and the test data is low. The correct method is to seal the sample box in three dimensions, seal it with sealing tape, and then place the sample box in the middle of the pressing plate of the back pressure tester, pressurize it at the standard speed until the carton is crushed.

　　一般客户在收到游标卡尺或直接用卷尺直接测定纸板的垂直边缘，来测定纸板的厚度。因为纸板生产线在分切时，薄刀分切有一定的压力，纸板分切边缘一般会塌陷，所以时间测量值会很低。事实上，在厚度测量中，守时性是在一定的压力下测量的，多点接触测量应该取平均值。

　　The thickness of the board is measured by the customer when receiving the vernier caliper or directly measuring the vertical edge of the board with a tape. Because there is a certain pressure in the slitting of the cardboard production line, the edge of the cardboard slitting generally collapses, so the time measurement value will be very low. In fact, in the thickness measurement, the punctuality is measured under a certain pressure, and the multi-point contact measurement should take the average value.