Prevent the contents leaking after consumer open cap,and destroys the aluminum foil layer.
Layer 3
The wax bonds layer 2 PET Film and layer 4 Paper. It will melt and stick to layer 4 after heated by electromagnetic induciton machine.
Layer 4
Used to be printed, absorb wax.
Layer 5
Absorbs heat from electromagnetic induciton wave, to melt layer 3 Wax and layer 7 Heat Seal Film.
Layer 6
A high resistance barrier layer to prevent contents leaking.
Layer 7
Mlet and seal the bottle after get heat from layer 5. Aluminium foil.