Market bag making machine manufacturers tell you the daily operation problems and countermeasures of bag making machine

The following two points are the most common problems encountered in the operation of the bag making machine.
1. What to do if the heat seal of the bag making machine is not completely caused by the leakage or deterioration of the contents?
Reason: Poor anti-pollution and heat-sealability of the film, mainly because the resin used in the inner sealing layer is not suitable.
Countermeasure: Use a film with good anti-pollution and heat-sealing properties. 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 have Has excellent anti-pollution heat sealability.
2. What should I do if the sealing of the bag making machine is brittle and broken?
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 seal is too sharp or the coated Teflon is damaged; (5) ) The silicone rubber at the bottom seal is too hard; (6) During the compounding and curing process, a part of the adhesive penetrates into the film. The substrate is affected by the penetration of the adhesive, and the toughness (impact resistance) is reduced, and the brittleness is increased; (7) After cooling and placing, the plastic sealing bag has a higher heat seal strength, and it also tends to become brittle. .
Countermeasures: (1) Select the appropriate processing temperature, pressure and heat-sealing time according to the heat-sealing characteristics of the material of the inner sealing layer; (2) Improve the surface condition of the upper heat-seal knife to make the surface of the sealer flat; (3) Teflon cloth covering is intact; (4) Select a silicone rubber pad of appropriate hardness.