The brittleness or even brittle fracture of the aluminum foil packaging bag seal may be caused by the following reasons:
The heat sealing temperature is too high: The high heat sealing temperature will cause the film material to be overheated, thereby affecting its toughness and increasing its brittleness.
The heat sealing pressure is too large: The excessive heat sealing pressure will cause the film to be subjected to excessive pressure during the heat sealing process, causing the material structure to change and become fragile.
The heat sealing time is too long: The long heat sealing process will also cause the film material to be overheated, affecting its performance.
The composite aging problem: During the composite aging process, if the adhesive penetrates into the film, it may reduce its toughness and increase its brittleness.
To solve these problems, the following measures can be taken:
Adjust the heat sealing temperature and time according to the heat sealing characteristics of the material to ensure that the heat sealing process is carried out within the appropriate temperature and time range.
Ensure that the heat sealing equipment is in good condition to avoid heat sealing problems caused by equipment problems.
During the composite aging process, pay attention to the penetration of the adhesive to ensure that the adhesive does not penetrate too much into the film.
Through these measures, the brittleness and brittle fracture of the aluminum foil packaging bag seal can be effectively avoided.
