A RECYCLABLE PAPER-BASED LAMINATE AND A BEVERAGE CARTON MADE THEREFROM
The present invention concerns a paper-based barrier multilayer packaging material structure (1) being formed as a unitary sheet and comprising from its outer surface to its inner surface, the following layers:- a polymer dispersion coating (9) having a thickness of 1 to 10 ?m,- a paperboard (8) having a grammage of between 120 g/m2 and 500 g/m2,- a water-based or solvent-less adhesive (7) having a thickness of 1 to 10 ?m,- a barrier metallized paper layer (MBPL) having substance weight between 30-120 g/m2, preferably 45 to 90 g/m2 and a Water Vapour Transmission Rate (WVTR) of 10 to 0.1 g/m2/d, preferably a WVTR of 1.0 to 0.1 g/m2/d measured at 38°C and 90% RH, and an Oxygen Transmission Rate (OTR) comprised between 100 and 0.1 cc/m2/d, measured at 23°C and 50% RH, preferably an OTR comprised between 1.0 and 0.1 cc/m2/d.- a water-resistant polyolefin sealable coating (2) having a thickness of 10 to 50 ?m, preferably of 25 to 35 ?m.