Abstract: It describes a pigment coated paperboard adapted for sterilizable packages and comprising one or more layers, with a pigment coated top layer of bleached kraft pulp. The paperboard has a density in the range of 700 to 870 kg/m3 and is hydrophobic from a sizing agent treatment of each layer, wherein the pigment coating comprises a pigment, a binder, and a rheology modifier, and wherein the pigment comprises at least 50 weight % calcium carbonate, the binder comprises an acrylic co-polymer, and the rheology modifier comprises an acrylic co-polymer. It also provides a corresponding method and use of the paperboard for producing a package, as well as a package.

Abstract: An uncoated paperboard for packages composed of one or more layers with a top layer of bleached kraft pulp having a gloss value of 15-50% measured according to Tappi T480, a minimal gloss variation (a coefficient of variation in the wavelength regions 3-30 mm of less than 5%), and a surface roughness (PPS-10) of 2-5 ?mm measured according to ISO 8791-4, wherein the paperboard has a density in the range of 700 to 850 kg/m3 and is hydrophobic from a sizing agent treatment of each layer, is described. A package comprising the paperboard is suitable for co-sterilization of the package and its contents.