Kompositfolien indeholder følgende lag udefra og ind: overtrukket Kraft- papir, lavdensitets polyethylenfilm, aluminiumsfolie, Surlyn (termoplastisk ethylen - metha- acrylsyre copolymer).
The Composite foil containing the following layers from outside to inside: coated Kraft paper, low density polyethylene foil, aluminium foil, Surlyn (thermoplastic ethylene-methacrylic acid copolymer).