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In daily life, when paper jewelry boxes are packed for jewelry, they will check the shell of paper jewelry boxes first. Only qualified paper boxes can be packed. At present, the inspection of paper jewelry boxes mainly includes side pressure test, wear resistance test, flat pressure test, adhesive peel test, puncture test and moisture test. The wear resistance test is mainly to test the maximum pressure of the paperboard in the unit area. Adhesive peel test is mainly for testing the adhesive strength of various parts of the jewelry box. If the adhesive strength is not enough, it will cause layering, which will reduce the compressive strength of the carton. The penetration test is mainly to test the energy value that the cardboard can withstand by the sudden external shock. The test of water powder is mainly to check whether the water absorption capacity of the paper jewelry box can be moisture-proof. |
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