PROCESS FOR PLASMA COATING A POLYPROPYLENE OBJECT

摘要

A process for improving the barrier performance of a plasma coated object comprising a polyolefin is disclosed. The process involves ensuring that the surface of the object to be coated is smooth as characterized by having a root-mean-square surface roughness that varies by less than the thickness of the coating to be applied, typically less than 100 nm. The invention also relates to a process for improving the stain resistance of polyolefin based articles comprising plasma polymerizing an organosilicon compound under conditions to deposit a polyorganosiloxane layer onto the article and/or (b) plasma polymerizing a organosilicon compound under conditions to deposit a silicon oxide layer directly on the article or onto a polyorganosiloxane layer prepared according to step (a).