Disclosed is a new fiber which has a triangular cross section, and which may be used as a substitute for animal hair with comparable pickup and other properties. The disclosure also relates to methods for providing same.

Disclosed is a new fiber which has a triangular cross section, and which may be used as a substitute for animal hair with comparable pickup and other properties. The disclosure also relates to methods for providing same.

A method and device (1) for producing and machining screwed-in brushes (2). In the method and in the device, at least one grinding sleeve (4) is used to grind down free bristle ends (5) of a brush (2) to be machined and thus remove edges and/or burrs on the free bristle ends (5).

A method and device (1) for producing and machining screwed-in brushes (2). In the method and in the device, at least one grinding sleeve (4) is used to grind down free bristle ends (5) of a brush (2) to be machined and thus remove edges and/or burrs on the free bristle ends (5).

This disclosure provides a toothbrush head and a toothbrush with improved toothbrush bristle configuration comprising different types of bristle filaments in a specified arrangement. Disclosed are toothbrush heads comprising first tufts (5) comprising first bristles (6) and second tufts (7) comprising second bristles (8), wherein the second tufts (7) are positioned outermost closest to the distal end (3A) and outermost closest to the proximal end (3B) on the bristle surface (3), and/or outermost closest to the widthways opposite ends (3C, 3D) on the bristle surface (3), and wherein the second bristles (8) have a stem (19) that splits into split ends (21), and wherein the split ends (21) are chemically tapered. Also provided are toothbrushes comprising said toothbrush heads. The toothbrushes achieve excellent brushing performance, plaque removal from the gingival and subgingival margin and reach into the interproximal spaces. There are also disclosed methods of manufacturing these toothbrushes.

This disclosure provides a toothbrush head and a toothbrush with improved toothbrush bristle configuration comprising different types of bristle filaments in a specified arrangement. Disclosed are toothbrush heads comprising first tufts (5) comprising first bristles (6) and second tufts (7) comprising second bristles (8), wherein the second tufts (7) are positioned outermost closest to the distal end (3A) and outermost closest to the proximal end (3B) on the bristle surface (3), and/or outermost closest to the widthways opposite ends (3C, 3D) on the bristle surface (3), and wherein the second bristles (8) have a stem (19) that splits into split ends (21), and wherein the split ends (21) are chemically tapered. Also provided are toothbrushes comprising said toothbrush heads. The toothbrushes achieve excellent brushing performance, plaque removal from the gingival and subgingival margin and reach into the interproximal spaces. There are also disclosed methods of manufacturing these toothbrushes.

A mechanically tapered bristle filament for an oral care implement. The filament is characterized by a long thin tapered end portion. The tapered end portion has a taper length and tip diameter comparable to chemically tapered filaments. The areal surface roughness of the tapered end portion however is greater than chemically tapered filaments thereby producing increased scrubbing action against the surfaces of the teeth. The foregoing taper and roughness characteristics of the present filament enhance inter-dental cleaning effectiveness.

A mechanically tapered bristle filament for an oral care implement. The filament is characterized by a long thin tapered end portion. The tapered end portion has a taper length and tip diameter comparable to chemically tapered filaments. The areal surface roughness of the tapered end portion however is greater than chemically tapered filaments thereby producing increased scrubbing action against the surfaces of the teeth. The foregoing taper and roughness characteristics of the present filament enhance inter-dental cleaning effectiveness.

Provided is a cosmetic brush having bristles that easily go between thin eyelashes and easily catch eyelashes when rolling up, and a manufacturing method of the same. A cosmetic brush includes an applying portion formed into a substantially columnar shape as a whole in which bristles are spread radially from a core wire portion evenly in a circumferential direction of the core wire portion and continued in a helicoidal fashion in an axial direction of the core wire portion, and tip ends of the bristles are uniformly bent at substantially the same angle forward or rearward in the axial direction of the core wire portion, and tapered toward tip ends.

A mechanically tapered bristle filament for an oral care implement. The filament is characterized by a long thin tapered end portion. The tapered end portion has a taper length and tip diameter comparable to chemically tapered filaments. The areal surface roughness of the tapered end portion however is greater than chemically tapered filaments thereby producing increased scrubbing action against the surfaces of the teeth. The foregoing taper and roughness characteristics of the present filament enhance inter-dental cleaning effectiveness.