A razor head comprises a frame. The frame comprises a leading longitudinal member and a trailing longitudinal member. The razor head further comprises a plurality of substantially parallel cutting members disposed between the leading longitudinal member and the trailing longitudinal member, and a cutting member support arranged in the frame, wherein the cutting member support is coupled to the plurality of cutting members. The cutting member support is configured to displace at least one cutting member of the plurality of cutting members from a default position to at least one predetermined deviating position based on an external stimulus.

Razor blades with two or more materials and/or methods of fabricating the same. In one example, a bimetal razor blade can comprise a blade body and a blade edge. The blade body can have a length and a width. The blade body can be formed of a first substrate portion comprising a first material having a first hardness. The blade edge can extend along the length. The blade edge can be formed of a second substrate portion coupled to the first substrate portion. The second substrate portion can comprise a second material having a second hardness that is distinct from the first hardness. The first and second materials can be metals.

A functional polymeric cutting edge structure and methods for manufacturing cutting edge structures using polymeric materials are provided. A razor blade for use in a razor cartridge or a blade box for assembly in a razor cartridge frame may be formed using the present invention.

A functional polymeric cutting edge structure and methods for manufacturing cutting edge structures using polymeric materials are provided. A razor blade for use in a razor cartridge or a blade box for assembly in a razor cartridge frame may be formed using the present invention.

The present invention relates to a cutting blade having an asymmetric cross-sectional shape with a first face, a second face opposed to the first face and different from the first face as well as a cutting edge wherein the first face comprises a surface and the second face comprises a primary bevel, a secondary bevel and a tertiary bevel with a first wedge angle θ.sub.1 between the surface on the first face and the primary bevel, a second wedge angle θ.sub.2 between the surface on the first face and the secondary bevel and a third wedge angle θ.sub.3 between the surface on the first face and the tertiary bevel. Moreover, the present invention relates to a hair removal device comprising this cutting blade.

The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically-pressed onto the uncoated blades.

The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically-pressed onto the uncoated blades.

A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.

A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.

A functional polymeric cutting edge structure and methods for the manufacturing of cutting edge structures comprised of polymeric materials are provided. The cutting edge structures may be produced on a substrate having a blade body or blade support type. The polymeric material is produced by curing a precursor material activated by electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to activate the precursor material. A razor blade for use in a razor cartridge or a blade box may be formed using the present invention.