Sample assembly multi-layer barrier coating and deposition process of a multi-layer barrier coating on a pre-evacuated plastic substrate

摘要

The present invention is a plastic container coated with a multi-layer barrier coating. The multi-layer barrier coating is useful for providing an effective barrier against gas permeability in containers and for extending shelf-life of containers, especially plastic evacuated blood collection devices. The coating has a first layer comprising a PVCD coating material and a second layer comprising a metal oxide. Preferably a third layer of an organic material is provided on top of the second layer.