A laminated body includes a fiber base material, a first protection layer provided on each of front and back surfaces of the fiber base material, and a second protection layer that is provided on at least one of the front and back surfaces of the fiber base material and that is made of a material that absorbs ultraviolet rays. The first protection layer is made of a material having a gas barrier property that is higher than a gas barrier property of the second protection layer.

A laminated body includes a fiber base material, a first protection layer provided on each of front and back surfaces of the fiber base material, and a second protection layer that is provided on at least one of the front and back surfaces of the fiber base material and that is made of a material that absorbs ultraviolet rays. The first protection layer is made of a material having a gas barrier property that is higher than a gas barrier property of the second protection layer.

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/m.sup.2 and 500 g/m.sup.2, 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/m.sup.2, preferably 45 to 90 g/m.sup.2 and a Water Vapour Transmission Rate (WVTR) of 10 to 0.1 g/m.sup.2/d, preferably a WVTR of 1.0 to 0.1 g/m.sup.2/d measured at 38 C. and 90% RH, and an Oxygen Transmission Rate (OTR) comprised between 100 and 0.1 cc/m.sup.2/d, measured at 23 C. and 50% RH, preferably an OTR comprised between 1.0 and 0.1 cc/m.sup.2/d. a water-resistant polyolefin sealable coating (2) having a thickness of 10 to 50 m, preferably of 25 to 35 m.

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/m.sup.2 and 500 g/m.sup.2, 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/m.sup.2, preferably 45 to 90 g/m.sup.2 and a Water Vapour Transmission Rate (WVTR) of 10 to 0.1 g/m.sup.2/d, preferably a WVTR of 1.0 to 0.1 g/m.sup.2/d measured at 38 C. and 90% RH, and an Oxygen Transmission Rate (OTR) comprised between 100 and 0.1 cc/m.sup.2/d, measured at 23 C. and 50% RH, preferably an OTR comprised between 1.0 and 0.1 cc/m.sup.2/d. a water-resistant polyolefin sealable coating (2) having a thickness of 10 to 50 m, preferably of 25 to 35 m.