Ätzverfahren und Geätzter Artikel

Details

Veröffentlichungs-Nr.

EP4768627

Anmeldetag

30. Dezember 2024

Veröffentlichung

1. Juli 2026

Rechtsraum

EP

Abstract

Provided is an etching method that includes providing a metallic substrate (100) on which an etch-resistant material is arranged to mask the metallic substrate, through which etch-resistant material apertures (126) are defined. The etch-resistant material comprises a continuous region (128) that extends continuously between and surrounds the apertures. The etching method includes etching the metallic substrate, with the etching including delivering an etchant to the metallic substrate through the apertures so that discrete recessed regions in the metallic substrate are initially etched beneath the apertures. The etch-resistant material is resistant to the etchant. The etching is continued until at least some of the discrete recessed regions merge beneath the continuous region of the etch-resistant material so that the continuous region extends over a location of the metallic substrate located in-between the initially formed discrete recessed regions, at which location metallic material of the metallic substrate is removed when the discrete recessed regions merge to form one or more merged etched regions (130). The etching leaves behind a portion (132) of the metallic substrate, which portion of the metallic substrate still remains beneath the one or more merged etched regions. Also provided is a method of manufacturing a foil, comb or blade for an electric shaver, with the method comprising implementing the etching method. Further provided is an article obtainable by the etching method or the method of manufacturing the foil, comb or blade.

Anmelder

Firma

Braun GmbH

Land

🇩🇪 Deutschland