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US 2026/0273785 A1Published application
Nitro-diamond-like-carbon coating on shaving blade tips
AssigneeDollar Shave Club, Inc.
InventorsArie LAPID, Jean RAMON, Gideon HOOBERMAN
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Abstract
Disclosed here are systems and methods for the implementation of a new coating type, permitting to achieve better performance of razor blades. These systems and methods improve on carbon coatings to incorporate additional elements into its composition. Additionally, the coating process parameters achieve also a high degree of reduction of the tip radius.
Claims27
A method for manufacturing a shaving razor blade, the method comprising:
- providing a heat-treated stainless-steel strip;
- grinding a sharpened cutting edge with a cutting edge tip on the stainless-steel strip;
- and
- using a physical vapor deposition system for applying a bias voltage to the stainless-steel strip and depositing a Nitrogen-containing Diamond Like Carbon (NDLC) coating by directional ion beams of Argon, Nitrogen, and Carbon and thereby coating the blade cutting edge tip and also sharpening the blade cutting edge tip.
1 more element
A razor blade, comprising:
- a stainless-steel strip having a sharpened cutting edge,
- the stainless-steel strip cutting edge including a nitrogen-containing diamond-like carbon (NDLC) coat on the stainless-steel cutting edge and tip, from the physical vapor deposition system, wherein the NDLC coating is from directional voltage biased ion beams of Argon, Nitrogen, and Carbon in the physical vapor deposition system, and wherein the NDLC coating results in a blade having between 53-93% weight C and 7-47% weight N.
Dependencies are inferred from the claim text.