Widely applicable to plastic and glass bottles.
Single piece aluminum foil sealing gasket: After electromagnetic induction heating sealing, the composite aluminum foil layer forms a seal at the bottle mouth, leaving no backing plate in the bottle cap.
Double piece aluminum foil sealing gasket: After electromagnetic induction heating sealing, the composite aluminum foil layer is separated into an aluminum foil sealing layer to seal the bottle mouth, and another lining layer (cardboard or foam) is left inside the lid to enhance the sealing effect between the lid and the bottle mouth after the aluminum foil gasket is torn off.