The paper bag machine can automatically generate paper bags, handbags, food bags, etc., and is widely used. Next, let's analyze the reasons and solutions for the poor sealing of the paper bag machine.
The reasons why the paper bag machine is not tightly sealed:
(1) The heat sealing temperature is too high;
(2) Excessive pressure;
(3) The heat sealing time is too long;
(4) The edge of the upper sealer is too sharp or the wrapped PTFE is damaged;
(5) The silicone rubber of the bottom seal is too hard;
(6) During the compounding and curing process, a part of the adhesive penetrates into the inside of the film. Due to the influence of the penetration of the adhesive, the toughness (impact resistance) of the substrate decreases and the brittleness increases;
(7) After the plastic composite packaging bag is cooled and placed, the heat sealing strength is increased, and it also tends to become brittle.
The solution to the poor sealing of the paper bag machine:
(1) According to the heat sealing characteristics of the material of the inner sealing layer, select the appropriate processing temperature, pressure and heat sealing time;
(2) Improve the surface state of the upper heat sealing knife and make the surface of the sealer flat;
(3) It is well wrapped with PTFE cloth;
(4) Choose a silicone rubber pad with appropriate hardness.
