Vacuum packaging refers to the product into the airtight packaging container, pumping away the air inside the container, so that the sealed container to achieve a predetermined vacuum degree of a packaging method, so that the vacuum packaging is maintained in a highly depressurized state, air scarcity is equivalent to the effect of low oxygen, so that microorganisms do not have the conditions for survival, in order to achieve the purpose of fresh fruit, no disease and rot occurrence.

The main role of vacuum packaging is to remove oxygen, in order to help prevent food spoilage, the principle is also relatively simple, because food mold spoilage is mainly caused by the activities of microorganisms, and most microorganisms need oxygen to survive, and vacuum packaging is the use of this principle, the bag and food cells within the oxygen extraction, so that micro-objects lose the "living environment".

For barrier performance testing

The main reference  ASTM D1653-2013,TAPPI T464, ASTM F1927and other standards, by testing the material barrier properties of vacuum packaging can analyze and solve the quality problems such as oxidation and deterioration, moisture and mold due to the transmission rate (amount) of oxygen and water vapor.

Testing for sealing performance

Reference "ASTM D 3078 flexible packaging parts sealing performance test method", applicable to the detection of vacuum packaging, plastic packaging bags and other packaging containers sealing conditions, can effectively evaluate the sealing process and sealing performance of packaging parts.

For tensile strength testing

Electronic tension machine test can be used to test the mechanical properties of plastic film, composite film, aluminum film and other vacuum packaging materials such as tensile, peel, heat seal, tear, etc. It can also be used in the medical industry to verify the piston sliding of syringes, body tightness and other tests.