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.)