Coating processes – Electrical product produced – Welding electrode
Patent
1984-02-16
1984-10-16
Lawrence, Evan K.
Coating processes
Electrical product produced
Welding electrode
427259, 427264, 427266, 427284, B05D 302, B05D 500
Patent
active
044774869
ABSTRACT:
The disclosed method is one for applying an opaque screening area (46) to a surface of a glass sheet (40). The method is initiated by applying to the surface of the glass sheet a masking material (42) which defines the edges of the opaque screening area. The masking material is nonreactive with the glass surface and is heat decomposable into products which can be removed from the glass surface without damage thereto. The masking material extends away from the defined edges of the opaque screening area to provide a wide area of masking material. A ceramic-containing material is applied on areas of the surface of the glass sheet to which the opaque screening areas are to be applied. The ceramic-containing material also coats at least a part of the masking material. The glass sheet is heated to decompose the masking material so that it and any ceramic material overlying it can be removed from the surface of the glass sheet and to heat fuse the fusable components of the ceramic material to the surface of the glass sheet thereby to form the opaque screening area. The decomposed masking material and any ceramic material overlying it are removed from the glass sheet so that the opaque screening area is defined by a sharp edge which had been defined by the masking material before its removal.
REFERENCES:
patent: 3061476 (1962-10-01), Miserocchi
patent: 3551176 (1970-12-01), Hlista
patent: 4270985 (1981-06-01), Lipson et al.
patent: 4300933 (1981-11-01), Thomas
Ford Motor Company
Johnson Olin B.
Johnson William E.
Lawrence Evan K.
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