A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has a thickness of greater than about 2.30 micrometers measured at a distance of four micrometers from the blade tip, a thickness of greater than about 4.26 micrometers measured at a distance of eight micrometers from the blade tip, and greater than about 7.93 micrometers measured at a distance of sixteen micrometers from the blade tip. A hard coating joined to the substrate has a thickness of 700 Angstroms to about 3500 Angstroms. An outer layer joined to a coated substrate is discontinuous. The outer layer may be produced from a dispersion comprising about 0.03 g/L or less of telomer or from about 0.5 % solids or less of telomer by weight of composition. The novel razor blade cuts at less than 100 % cutting efficiency using a single fiber cutting efficiency measure.

A method of assembling a razor cartridge. A housing is injection molded. An elastomer is co-injection molded to the housing forming a pair of laterally spaced apart blade stabilizers. A primary blade member having a cutting edge is mounted to the housing. The cutting edge of the primary blade member is contacted with the laterally spaced apart blade stabilizers. A blade retention member is mounted to a top surface of the housing. A pair of lateral ends of the cutting edge of the primary blade member is constrained between the blade retention member and the pair of laterally spaced apart blade stabilizers.

This invention relates to a novel of making a personal care product including the steps of providing a treatment sheet comprised of a first material and a first plurality of apertures and joining a support structure to the lower surface of the treatment sheet. The support structure includes a support material, a support sheet, a support ring, or any combination thereof. The support sheet includes a second plurality of apertures. The support sheet is disposed beneath the treatment sheet by aligning the first plurality of apertures and the second plurality of apertures. Fluid support material is solidified such that the treatment sheet and the support sheet are bonded together. The support ring is disposed on a housing (e.g., in a groove) below the support sheet or joined to the treatment sheet via the support material prior to solidifying.

This invention relates to a novel personal care product which having a treatment unit which includes a treatment sheet and a support structure. The treatment sheet includes apertures with cutting edges while the support structure, joined to the treatment sheet, is formed of a support material, a support sheet or a support ring, or any combination thereof. The support structure assists in reducing damage to the treatment sheet and in preventing injury to the consumer (e.g., if the personal care product is dropped).

This invention relates to a novel personal care product having a treatment sheet includes a first material and a plurality of first apertures, and at least one support sheet includes a second material and a plurality of second apertures, the at least one support sheet disposed beneath the treatment sheet and desirably joined to the treatment sheet. The first apertures of the treatment sheet include cutting edges generally formed on at least a portion of an inner perimeter of the first apertures while the support sheet does not include cutting apertures. The first and second apertures are aligned such that from a top view of the product, the apertures of the support sheet are not visible, providing ease of rinsing. The support sheet assists in reducing damage to the treatment sheet (e.g., if the personal care product is dropped).

This invention relates to a novel personal care product and method of assembling the product including an upper product end and a lower product end, a housing at the upper product end, the housing having a housing wall and one or more windows in the housing wall, a frame member including one or more tabs, the one or more tabs coupled to the one or more windows. The number of tabs can equal the number of windows. The housing may also include notches within which the tabs are disposed.

This invention relates to a novel personal care product having a flat treatment sheet having an upper surface and a perimeter area on the upper surface, a frame member having an underside surface and at least one tab, wherein the frame member is disposed over the perimeter area of the flat treatment sheet and the underside surface of the frame member is coplanar with the upper surface of the flat treatment sheet and the at least one tab extends below the lower surface of the treatment sheet. An upper product end of the personal care product includes a housing having at least one housing window. The at least one tab of the frame member is bent into the housing window. The frame member includes a flat or chamfered upper surface. The flat treatment sheet treats skin, removes hair, or a combination thereof.

A razor cartridge comprising: a housing extending longitudinally along a longitudinal axis, wherein the housing comprises a leading longitudinal side, a trailing longitudinal side, and a recess in between the leading and trailing longitudinal sides for accommodating a group of cutting members, and a group of cutting members comprising a plurality of cutting members disposed at least partially in the recess, wherein each cutting member is arranged between a leading longitudinal side and a trailing longitudinal side of the recess in a shaving direction of the razor cartridge. A first cutting member of the group of cutting members comprises a first blade support having a first blade mounting portion disposed on an inner surface of the first blade support that, in use, faces away from a shaving plane, and a first blade attached to the first blade mounting portion.

Razor having a hair-severing member having a plurality of sawing teeth arranged along a hair-severing edge of the hair-severing member. Each sawing tooth has a tooth tip and tooth edges mutually connected via the tooth tip. The hair-severing member is mounted for sawing through hairs present on the skin by means of the sawing teeth by moving each sawing tooth in a local direction of extension of the hair-severing edge at the position of the respective sawing tooth. A drive is coupled to the hair-severing member for driving the hair-severing member such that the sawing teeth move with an average velocity larger than or equal to 10 m/s. The spacing between the tooth tips of two successive sawing teeth is between 20 μm and 150 μm.

Razor having a hair-severing member having a plurality of sawing teeth arranged along a hair-severing edge of the hair-severing member. Each sawing tooth has a tooth tip and tooth edges mutually connected via the tooth tip. The hair-severing member is mounted for sawing through hairs present on the skin by means of the sawing teeth by moving each sawing tooth in a local direction of extension of the hair-severing edge at the position of the respective sawing tooth. A drive is coupled to the hair-severing member for driving the hair-severing member such that the sawing teeth move with an average velocity larger than or equal to 10 m/s. The spacing between the tooth tips of two successive sawing teeth is between 20 μm and 150 μm.