(1) Barrier
The barrier ability to oxygen in the environment is verified by the oxygen permeability test. The oxygen permeability of the plastic cup and the cover film can be tested separately or the whole oxygen permeability of the plastic cup that has been heat sealed with the cover film can be detected. If the barrier of the plastic cup or cover film is poor, that is, the oxygen permeability is large, it is easy to cause the fruit products inside the package to be exposed to a large amount of oxygen to cause the oxidation of nutrients and bacteria to multiply, which can cause mildew and swelling of the canned fruit Quality issues such as packages.
(2) Physical and mechanical properties
Thickness uniformity-mainly refers to the thickness of the cover film, which is verified by testing the thickness of the package. The uniformity of the thickness is the basis for ensuring the stable performance of the packaging material.
Puncture resistance-mainly for the cover film, it is verified by the puncture resistance test to prevent the poor puncture resistance of the cover film from causing the cover film of the canned fruit in the process of transportation, storage and shelf life Damaged by external force puncture.
Compound fastness-mainly for the cover film, it is verified by the peel strength test. If the cover film has poor compound fastness, the peel strength is low. In addition to the delamination of the cover film, the cover film may be opened. Sometimes it causes separation between the composite membranes rather than between the cover membrane and the cup body, which causes inconvenience to consumers.
Opening performance-verified by the opening force test, to prevent the bonding between the cover film and the plastic cup being too strong or not strong, resulting in the problem that the cover film is not easy to open or leaks.
Tightness——Verified by the sealing performance (negative pressure method) test to prevent the leakage of liquid and air in the finished plastic cup canned fruit.
(3) Hygienic performance
Residual amount of organic solvent-mainly for the cover film, it is verified by the solvent residual test. If the residual amount of the solvent is too large, the packaging film has an odor, and the residual solvent easily migrates into the canned fruit, which causes the odor and affects consumption Health.
Non-volatile matter content-Both the cover film and the plastic cup need to pay attention to this performance, which is verified by the evaporation residue test to prevent a large amount of non-volatile matter content in the packaging material from causing a large amount of migration and pollution when it comes into contact with the canned fruit Canned Fruit.
The above information is provided to you by Jinan Languang Electromechanical Technology Co., Ltd. Labthink 0531-85068566 Global multinational enterprises that provide customers with industry consulting, product sales, after-sales service, and risk control. Since its establishment, it has provided comprehensive professional packaging product quality control solutions for more than tens of thousands of scientific research institutions, third-party testing institutions and enterprise quality control departments around the world.
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