The compressive strength of the carton is divided into effective value and final value. During a compression test, the force value changes sometimes from slow to fast to the point of collapse, and sometimes increases steadily to the point of collapse. In the long-term compression test, we found that the change of the force value sometimes has a certain buffer: that is, when the force value and deformation increase to a certain extent, the force value stops and the deformation continues to increase. After a while, the force value continues. Added to the fold point of the carton. We can call the force value before buffering as the effective force value, and the deformation before buffering as the effective deformation amount. After buffering, although the force value can continue to increase, the carton has already begun to deform and cannot meet the use requirements. Therefore, the standard for judging the compressive strength of cartons should be the effective force value during the compressive test.
As a commonly used packaging material, cartons have been widely used in the storage and transportation of various products. In order to avoid economic losses caused by damage to cartons during storage or transportation, some packaging material manufacturers use special tests to test the extrusion force. The purpose of this test is to simulate the impact of the two clamps on the clamping force of the package and the goods when the package is loaded and unloaded by a clamping truck, so as to evaluate the clamping strength of the package and obtain a carton that meets the specified standards.
First, choose a location to place the sandbox crush tester. Generally speaking, you will choose a place where the surrounding environment is clean, dry and well ventilated. Secondly, choose a place with stable power supply, long-term power supply and no power outage. If there is electromagnetic interference, it should be installed in a stable environment on the ground, because the carton extrusion testing machine may vibrate during the test to prevent uneven places from destroying the accuracy of our test data.
When operating a carton extrusion testing machine, certain safety measures should be taken, such as a fire extinguisher around the testing machine, and protective equipment or clothing for the testing personnel. To prevent fire or internal circuit damage, please do not use. Fuse is out of specification.
In addition, we would like to remind you that in order to prolong the service life of the carton extrusion testing machine and ensure the accuracy of the test data, you must pay attention to the operating specifications of the carton extrusion testing machine when using the equipment daily, and try to avoid misuse or miss. Because this equipment is a precision instrument, there is a high possibility of equipment failure due to your abnormal operation. This will not only affect the normal use of the equipment, but also shorten the service life of the equipment. Later maintenance is also very necessary. Yes, frequent troubleshooting and adding lubricant to equipment are major steps in frequent maintenance.
