Razor blades
A razor blade with a phosphonate polysiloxane composite layer on the cutting edge addresses the need for improved coatings that enhance cutting performance and durability, reducing cutting force and substrate damage while minimizing skin nicking.
WO2026136784A1PCT designated stage Publication Date: 2026-06-25THE GILLETTE CO
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- THE GILLETTE CO
- Filing Date
- 2025-12-19
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing razor blade coatings do not effectively enhance cutting performance while minimizing substrate damage and manufacturing costs, and there is a need for improved coatings that work in synergy with the blade edge to reduce cutting force and minimize skin nicking.
Method used
A razor blade with a sharpened cutting edge coated with a lubricious phosphonate polysiloxane composite layer, which is deposited to facilitate bonding and ensure durability during shaving, comprising a phosphonate polysiloxane composite layer as the outermost layer.
Benefits of technology
The coating reduces cutting force and minimizes substrate damage, providing a durable and cost-effective shaving experience by enhancing the blade's cutting performance and reducing skin nicking.
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Smart Images
Figure US2025060498_25062026_PF_FP_ABST
Abstract
A razor blade with a sharpened cutting edge with an outer bonding surface. A phosphonate polysiloxane composite layer deposited on the outer bonding surface forming an outermost layer of the sharpened cutting edge. The phosphonate polysiloxane composite layer is composed of one or more layers. The phosphonates are covalently bonded to the outer bonding surface. The siloxanes are covalently bonded to the phosphonates and in some applications are also covalently bonded to the outer bonding surface. The siloxanes are a reactive silicone polymer, bonded to the phosphonates or outer bonding surface creating branches, mild crosslinking or even heavily crosslinked layers. The phosphonate polysiloxane composite may be formed through the use of thermal, UV exposure, IR exposure, a combination of thermal, UV, and or IR, as well as e-beam, ion-beam, or other ionization source.
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