Verfahren zur Herstellung eines Zahnbürstenkopfs

Details

Veröffentlichungs-Nr.

EP3753448

Aktenzeichen

EP19181674

Anmeldetag

21. Juni 2019

Veröffentlichung

10. Dezember 2025

Erteilung

10. Dezember 2025

Rechtsraum

EP

IPC

A46B3/06A46B3/22A46B9/02A46D3/00

Abstract

A method for producing a (tooth)brush head or a part (10) thereof is provided comprising -providing at least two filament containers each comprising a supply of loose filaments (22) which differ in at least one property selected from filament material, filament diameter, filament cross-section, filament shape, presence or absence of additives and/or a coating, or a combination thereof; -picking one or more bristle tuft(s) (20) from the at least two filament containers and arranging them in a hole perforation plate (60) comprising one or more holes (70), which are shaped and distributed according to the desired bristle field (28) of the brush head to be produced; -arranging an energy source (80) so that the ends (23) of the bristle tufts (20) and the energy source (80) are arranged contactless, wherein the ends (23) of the bristle tufts (20) which shall be fused are arranged at different distances to the energy source (80), wherein the distance is adjusted according to the at least one property; -applying energy to the ends (23) of the bristle tufts (20) until fuse balls (24) are formed; -transferring the bristle tufts (20) to a molding position, wherein the distance of the fuse ball (24) of at least one bristle tuft (20a) is different to the distance of the fuse ball (24) of said bristle tuft (20a) in the fusing position; -over-molding of the fuse balls (24) of the bristle tufts (20) with molten plastic material thereby forming a cleaning element carrier (30); -transferring the cleaning element carrier (30) to a brush head mold and injecting molten plastic material into the brush head mold forming a toothbrush head (12, 16), wherein the cleaning element carrier (30) is over-molded thereby and the bristle tufts are still located in the hole perforation plate (60). Further a (tooth)brush head (12,16) or a part (10) thereof are disclosed that are produced by the method as disclosed herein.

Anmelder

Firma

The Procter & Gamble Company

Land

🇺🇸 USA

Fachgebiete