Frequently Asked Questions about Bag Making Machine Operation

1. What should I do if the bag making machine is not completely heat-sealed and causes leakage or deterioration of the contents?
Reason: The anti-pollution heat sealing property of the film is poor, mainly because the resin used in the inner sealing layer is inappropriate.
Countermeasure: Use a film with good anti-pollution heat sealing properties. Generally speaking, LDPE has moderate anti-pollution heat sealing properties, EVA has good anti-pollution heat sealing properties when the VA content is large, LDPE also has good anti-pollution heat sealing properties, and ionic resins and metallocene polymers have good anti-pollution heat sealing properties. Has excellent contamination resistance and heat sealability.

2. What should I do if the seal of the plastic bag making machine becomes brittle and breaks?
Reasons: (1) The heat sealing temperature is too high; (2) The pressure is too high; (3) The heat sealing time is too long; (4) The edge of the upper sealer is too sharp or the covered PTFE is damaged; (5) ) The bottom sealing silicone rubber is too hard; (6) During the compounding and curing process, part of the adhesive penetrates into the film. Due to the penetration of the adhesive, the toughness (impact resistance) of the base material decreases and the brittleness increases; (7) After the plastic composite packaging bag is cooled and placed, the heat sealing strength increases, and it also tends to become brittle. .