Production of shaving foil

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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96 36, 156651, 156661, C23F 102

Patent

active

041054938

ABSTRACT:
The invention concerns a method for producing foils for dry shavers.
The method of the invention includes forming a layer of photosensitive material on each side of a metal plate, exposing each side to light to produce a pattern of exposed and unexposed areas, corresponding to perforations at one side and recesses in the backs of the bars of the foil on the other side, etching each side, them removing photosensitive material from the front side and carrying out further etching until the foil is completely perforated.
The invention is especially suitable for forming foils for battery operated dry shavers.

REFERENCES:
patent: 2750524 (1956-06-01), Braham
patent: 3498891 (1970-03-01), Futterer
patent: 3577852 (1971-05-01), Futterer
patent: 3580755 (1971-05-01), Kidd et al.
patent: 3653900 (1972-04-01), Black
patent: 3655528 (1972-04-01), Futterer
patent: 3655529 (1972-04-01), Futterer
patent: 3666462 (1972-05-01), Kaplan
patent: 3676914 (1972-07-01), Fiore
patent: 3679500 (1972-07-01), Kubo et al.
patent: 3695927 (1972-10-01), Futterer
patent: 3929532 (1975-12-01), Kuzminski
patent: 4013498 (1977-03-01), Frantzen et al.
patent: 4069085 (1978-01-01), Buysman et al.
Chemical Milling with Kodak Photosensitive Resist, Kodak Publication, 1968, pp. 1-39.

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