The laminating layer is made using PET, AL, PETAL or NY
NY known as nylon is a polyamide resin characterized with a huge melting point and exceptional stiffness and clarity.
Also, it has excellent aroma and oxygen resistance features that make it suitable for packaging.
AL known as aluminum foil are layered to plastic films to generate excellent moisture, aroma, and oxygen resistant features.
PETAL is a material made up of Polyester and Aluminum.