Hot Sealing of Aluminum Foil

1. Raw aluminium foil is the carrier of bonding layer in raw and auxiliary materials. Its quality has a great influence on the heat sealing strength of hot sealing of aluminum foil. On the one hand, the oil stain on the surface of the original aluminum foil will weaken the bonding force between the binder and the original aluminum foil. If the original aluminum foil surface is greasy and the surface tension is less than 31 *10-3 micron, it is difficult to achieve the ideal heat sealing strength. On the other hand, the inadequate metal composition and surface photometry of the original aluminum foil affect the strength of the heat seal, so the quality of the original aluminum foil must be strictly controlled.