Method of making heat treated coated article using diamond-like carbon (DLC) coating and protective film including removal of protective film via blasting

摘要

There is provided a method of making a heat treated (HT) coated article to be used in shower door applications, window applications, or any other suitable applications where transparent coated articles are desired. For example, certain embodiments of this invention relate to a method of making a coated article including a step of heat treating a glass substrate coated with at least a layer of or including diamond-like carbon (DLC) and an overlying protective film thereon. In certain example embodiments, the protective film may be of or include both (a) an oxygen blocking or barrier layer, and (b) a release layer. Following and/or during heat treatment (e.g., thermal tempering, or the like) the protective film may be removed via blasting it off using particles mainly of material softer than the DLC. In certain example embodiments, the blasting particles may be of or include sodium bicarbonate and/or may be directed at the protective film at a blasting pressure of from about 2.5 to 7.0 bar, more preferably from about 3 to 4.5 bar. In certain example embodiments, the blasting particles may be soluble in water and/or may have a blasting residue which is basic (pH7), so as to result in a more environmentally friendly process.