Method of producing perforated glass plate

Details Method of producing perforated glass plate Method of producing perforated glass plate

1979-01-24

1981-10-06

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

65 31, 156656, 156657, 1566591, 156663, 252 793, B23P 1500, B23P 2506, B44C 122, C03C 1500

Patent

active

042933765

ABSTRACT:
A perforated glass plate for use in gas discharge display devices is produced by providing an etch-resistant coating in a select pattern on surfaces of a glass plate so that areas to be perforated are coating-free, subjecting the so-coated glass plate to a gaseous hydrofluoric acid, obtained from concentrated hydrofluoric acid, for a period of time sufficient to etch fine sized perforations, for example holes, through the plate and rinsing the etched plates.

REFERENCES:
patent: 2324087 (1943-07-01), Jelley
patent: 2719373 (1955-10-01), Allen et al.
patent: 3956667 (1976-05-01), Veith
patent: 4053351 (1977-10-01), Deforest et al.
patent: 4059480 (1977-11-01), Ruh et al.
patent: 4127437 (1978-11-01), Bersin et al.

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