Process for depositing a barrier coating on plastic objects

摘要

The present invention is a barrier coating and a method for depositing an inorganic coating on a pre-processed substrate at high power levels. The process of the present invention is useful for providing an effective barrier against gas and/or water permeability of substrates, especially for plastic blood devices. The pre-processed substrate comprises a buffer layer to mechanically isolate the substrate so that the substrate can be subjected to power levels or temperature levels that would typically lead to deformation of the substrate.