The invention relates to a coated packaging material that has a substrate having a base material of cellulose, an outer side to be faced away from the packaging item as well as an inner side to be faced towards the packaging item. The inner side of the substrate carries at least one layer of an aqueous composition, which includes at least polyvinyl alcohol and/or at least one polyvinyl alcohol copolymer as well as a cross-linking agent, wherein the aqueous composition has at most 40% by wt. of polyvinyl alcohol and/or polyvinyl alcohol copolymer and a total solid content of at most 55% by wt. The layer and cross-linking the polyvinyl alcohol and/or the polyvinyl alcohol copolymer is dried with the aid of the cross-linking agent with formation of a barrier layer for hydrophobic compounds are performed.
本发明涉及一种涂层包装材料,其基材为
纤维素基材,外侧朝向包装物,内侧朝向包装物。基材的内侧至少有一层
水性组合物,其中至少包括聚
乙烯醇和/或至少一种聚
乙烯醇共聚物以及一种
交联剂,其中
水性组合物中聚
乙烯醇和/或聚
乙烯醇共聚物的重量比不超过 40%,总固含量不超过 55%(重量比)。在
交联剂的帮助下,将聚
乙烯醇和/或聚
乙烯醇共聚物干燥成层并交联,形成疏
水性化合物的阻隔层。