バリアーコーティングを備えるプラスチック容器

摘要

The invention is directed to a process for reducing the gas permeability of a plastic material by applying a barrier coating on the plastic material comprising the steps a) pre-treatment of at least a part of the plastic material; b) applying at least one coating layer of polyvinyl alcohol on the pre-treated surface and c) applying at least on top coating layer of polyvinyl acetal on the polyvinyl alcohol layer.