1. concern package material of opened force, and sealed performance (negative pressure method), main performance of monitoring, which, "opened force" is refers to opened jelly cup sealing of most vigorously value, General through pull test machine of stripping test gets, and according to different jelly Cup shape and the using needs, used different shape of test fixture added holding test and different of test angle for opened test.
2. control the sealing parameters, meets easily open and ensure good sealing Velum.
If the freeze occurs cover film is hardly torn, easy to open, is very influencing consumer's impression of the brand, so the production time to pay more attention to.
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