| 摘要 |
The invention relates to a process for producing a coated packaging material (10), in which at least the steps of a) providing a substrate (12) having a base material (14) made from cellulose, an outer side (16) which is to face away from a packaged material and an inner side (18) which is to face toward the packaged material, b) coating at least the inner side (18) of the substrate with at least one layer of an aqueous composition comprising at least polyvinyl alcohol and/or at least one polyvinyl alcohol copolymer and a crosslinking agent, where the aqueous composition has not more than 40% by weight of polyvinyl alcohol and/or polyvinyl alcohol copolymer and a total solids content of not more than 55% by weight, and c) drying the layer and crosslinking the polyvinyl alcohol and/or the polyvinyl alcohol copolymer with the aid of the crosslinking agent to form a barrier layer (22a, 22b) for hydrophobic compounds are conducted. The invention further relates to a packaging material (10) having at least one barrier layer (22a, 22b) for hydrophobic compounds. |
