Method for etching metallic sheet

Details Method for etching metallic sheet Method for etching metallic sheet

1982-08-19

1983-12-06

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156644, 156651, 156656, 313402, C23F 102

Patent

active

044191812

ABSTRACT:
The invention provides method for etching a metallic sheet. The method includes a first step of forming an anticorrosive pattern defining apertures on one surface of the metallic sheet and an anticorrosive pattern defining smaller apertures than said apertures on the other surface of said sheet; a second step of lightly etching said the other surface for removing an oxide film on the surface of the metal to expose the surface of the metal; a third step of spraying an etching solution on said one surface for etching said one surface to a predetermined depth; and a fourth step of simultaneously spraying an etching solution on both surfaces of said metallic sheet for forming apertures in said metallic sheet. The invention provides an apparatus for practicing this method. The invention is preferably applied for forming apertures by etching in a metallic sheet to provide a shadow mask of a color CRT.

REFERENCES:
patent: 3929551 (1975-12-01), Frantzen
patent: 4013498 (1977-03-01), Frantzen et al.
patent: 4124437 (1978-11-01), Bond et al.
patent: 4303466 (1981-12-01), Thoms

Affiliated with

Also associated with

Rating

Method for etching metallic sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for etching metallic sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for etching metallic sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2028311