'Cleaning of Polyester Films Prior to Vacuum Coating'

摘要

It is well known that the presence of surface contamination impairs the quality and function of vacuum deposited layers on polyester substrates. Specifically, the presence of particulate matter on a polyester surface during vacuum coating operations is troublesome, because the discrete particles cause discontinuous coatings to be formed [1-4] (usually referred to as 'pinholes'). This paper describes experimentation undertaken to assess the viability and performance of web cleaning techniques which could be applied to polyester films prior to the vacuum coating operation.