1.Forming structure : Tight fit, with special indenter
2.Sealing glue dry film detection: Use a precision balance to weigh whether the amount of test glue is normal, and visually check that the sealing glue has no air bubbles, leaks, and the water content of the overflow glue should not exceed 8%
3.Opening test : According to the requirements of different lid types, put the lid sample into the oven at the corresponding temperature and bake at 180°C/20 minutes. After taking it out and cooling, pull it at an angle of 30° without pulling the ring off.
Tightness Use a nitrogen detector to samUse a nitrogen detector to sample the finished cover for nitrogen inspection, and there is no leakage
4.External coating curing test: Put the sample cover into the container according to the sterilization requirements, add distilled water, immerse the sample cover at 100°C or 126°C, keep it at a constant temperature for 30 minutes, and then take it out for visual inspection. (The outer coating film has no obvious loss of gloss, peeling, or shedding )
5. Internal coating curing test: According to the sterilization requirements, put the sample cover into the container, add distilled water, immerse the sample cover at 100°C or 126°C, keep it at a constant temperature for 30 minutes and then take it out after cooling down for visual inspection (the inner coating film has no whitening, peeling, or falling off)
6.:Internal coating curing test According to the characteristics of the content material and sterilization requirements, put the lid into the container of the relevant test container listed, and conduct the test according to the corresponding conditions. After the test, immediately cool it, rinse it with water and dry it, and inspect it visually. ,(The inner coating film has no obvious sulphur spots, peeling, falling off, no blackening or peeling on both sides of the rivet.)