In the process of bag-making mechanism, the contents may leak or deteriorate due to incomplete heat sealing. For such cases, the main reason is that the film’s anti-pollution heat-sealability is poor, or the resin used in the inner sealing layer is not good. Appropriately caused.
Countermeasure: Use a film with good anti-pollution heat-sealability. Generally speaking, LDPE has moderate anti-pollution heat-sealability, EVA has good anti-pollution heat-sealability when the VA content is large, LDPE also has good anti-pollution heat-sealability, ionic resins and metallocene polymers are Has excellent anti-pollution heat-sealability.
The above are the countermeasures for the leakage or deterioration of the contents caused by incomplete heat sealing of the bag making machine