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US 2018/0257126 A1Published application
Method of making a bent razor blade
AssigneeEdgewell Personal Care Brands, LLC
InventorsHENRYK BYKOWSKI, STEPHAN FISCHER, JOCHEN THOENE
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Abstract
A method for making a bent razor blade is disclosed. The method includes: providing an elongated strip of stainless steel that can be 0.076 mm thick; hardening the strip; providing a cutting edge along an edge of the strip and providing coating(s) on the cutting edge. The stainless steel has a carbon content less than 0.60% and preferably between 0.45% and 0.55% by weight. The strip is separated lengthwise into discrete razor blades. The bent portion of the razor blade is then formed using a swivel bending process.
Claims8
A method of making a razor blade, comprising:
- providing a metal strip having a width that extends between a first edge portion and a second edge portion, and a thickness that extends between a first surface and a second surface, which first and second surfaces extend widthwise between the first edge portion and the second edge portion;
- providing a forming tool having:
- a first member that includes a parti-cylindrical surface disposed between a first surface portion and a second surface portion;
- and
- a second member having an arcuate contact surface;
- clamping the first edge portion relative to the tool at a position such that the first surface is in contact with the first surface portion of the first member of the forming tool and second edge portion extends outwardly from and beyond the parti-cylindrical surface of the first member of the forming tool;
- disposing the arcuate contact surface of the second member of the forming tool in contact with the second surface of the metal strip at a position adjacent the parti-cylindrical surface;
- and
- moving the second member of the forming tool along the parti-cylindrical surface of the first member of the forming tool with the second surface of the metal strip in contact with the arcuate contact surface of the second member of the forming tool and the first surface of the metal strip in contact with the parti-cylindrical surface of the first member of the forming tool.
6 more elements
Dependencies are inferred from the claim text.