A toothbrush head includes a cleaning element carrier and one or more bristle tufts, each consisting of a plurality of bristle filaments connected to one another via a fuse ball. The fuse balls are embedded in the cleaning element carrier such that the balls are completely enclosed and the bristle filaments protrude from the carrier's front surface. At least two fuse balls are located at different levels in the carrier.

A cleaning element carrier for a toothbrush in a form of a disk has a back surface including a central depression covering at least 70% of the back surface and forming an edge at the border. The carrier's front surface includes at least one protrusion so that the front surface comprises two levels, wherein the area covered by the depression is larger than the area covered by the protrusion.

A method for producing a toothbrush head comprises providing at least two bristle tufts that differ in at least one property; arranging the tufts in a hole-perforation plate comprising holes shaped and distributed according to the desired bristle field; arranging an energy source so that the ends of the bristle tufts and the energy source are arranged contactless, wherein the ends of the bristle tufts to be fused are arranged at different distances to the energy source and are adjusted according to the different property; applying energy to the ends of the bristle tufts until fuse balls are formed; transferring the bristle tufts to a subsequent process position, wherein the distance of the fuse ball of at least one bristle tuft to the hole-perforation plate is different from the distance of said fuse ball to the hole-perforation plate in the fusing position before; over-molding of the fuse balls of the bristle tufts with plastic material thereby forming the brush head or the part (10) thereof.

A method for producing a toothbrush head, comprising: providing at least two filament containers, each comprising a supply of loose filaments that differ in at least one of their property selected from material, diameter, cross-section, shape, and presence of additives and/or coating; picking bristle tufts from the containers and arranging them in a perforation plate comprising holes shaped and distributed according to a desired bristle field of the brush head to be produced; arranging an energy source and the ends of the tufts in a contactless arrangement, wherein the ends of the tufts to be fused are at different distances from the energy source, and wherein the distance is adjusted according to the at least one property; applying energy to the ends of the tufts until fuse balls are formed thereon; transferring the tufts to a molding position, wherein a distance between at least one fuse ball and the front surface is different from the distance between the bottom edge of said fuse ball and the front surface in the fusing position; over-molding the fuse balls with molten plastic material thereby forming a cleaning element carrier; transferring the cleaning element carrier to a brush head mold and injecting molten plastic material into the brush head mold forming a toothbrush head, wherein the cleaning element carrier is over-molded thereby and the tufts are still located in the perforation plate.

A method (200) for manufacturing a brush head (10) includes: (i) positioning (210) a first end (23) of each of a plurality of bristle tufts (21) into a tuft plate (110) comprising a plurality of cavities (120) each configured to receive at least one of the plurality of bristle tufts; (ii) applying (220) a force, via a profile plate (300), to a second end (25) of the plurality of bristle tufts, wherein the profile plate comprises a predetermined shape complementary to a desired profile configuration of the bristle tufts; and (iii) applying (230) heat to each of the first ends of the plurality of bristle tufts, via a die plate (400) comprising at least one cavity (410) configured to receive at least one of the plurality of the first ends, at a temperature sufficient to at least partially melt each of the first ends into the cavity.

A method for manufacturing a brush head includes the steps of providing a plurality of bristle tuft retention elements, and inserting at least one bristle tuft into each of the bristle tuft retention elements. The proximal end of each bristle tuft is secured into each bristle tuft retention element. The platen portion of the brush neck is positioned in relation to the proximal ends of the bristle tufts in the retaining elements to define a space in relation to the proximal ends of the bristle tufts. A flexible material is injected into the space to create a flexible material matrix that at least partially encompasses the neck and the proximal ends of the bristle tufts. At least a portion of an exterior of the flexible material matrix is coated with a protective coating.

A toothbrush having a brush body and a bristle carrier that is produced from a hard material using an injection molding method and having injection-molded bristles that protrude from the bristle carrier. The injection molded bristles are produced from a bristle material using the injection molding method. The bristles have a bristle stem and the bristle carrier has a small carrier plate or is formed by the small carrier plate that is produced from a hard material using the injection molding method and fastened on the brush body. The hard material of the bristle carrier or the hard material of the small carrier plate is harder than the bristle material.

Method of making soft interdental brushes, which relates to the field of daily necessities and solves the problems of unsightly fracture points and causing skin scratches at the fracture points with the current producing process. The method includes forming a receptacle frame with technical points as follows: a receptacle plate for organizing the brushes and receiving columns for fixing the brushes, the receptacle plate and the receptacle columns are fixedly attached; The method also adopts an interference fit approach to collect the brushes through the receptacle frame, meanwhile, the material after the injection will be cut off once the brushes are received by the receptacle frame. Compared with the traditional technology, the utility model makes the soft interdental brush more convenient to pick off, furthermore, there will be no residual connecting strips on the brush, so that the brush will not cut the skin while be more artistic.

A method for manufacturing a brush head (10). The method includes molding a tuft carrier (50) having at least one retention element (52) that are positioned relative to a handling plate (101). Excess material (59) may be removed from the tuft carrier. The retention elements are loaded into recesses of the handling plate. A bristle tuft (21) comprised of a plurality of bristles (22) is inserted into the opening (51) of each retention element. A proximal end (23) of each bristle tuft (21) is bonded together with at least a portion of the proximal side (53) of each corresponding retention element (52) to form a merged proximal end head portion (26) that secures the bristle tufts and retention elements together as a plurality of merged tuft assemblies (20). A platen (42) of a neck (40) is positioned in relation to the merged tuft assemblies using a cavity in a base plate. A matrix material (30) is overmolded to at least partially encompass the platen and the merged tuft assemblies and form the brush head.

Disclosed is a brush-like device and related manufacturing method. The device includes at least a handle head portion obtained by way of plastic material moulding on a terminal portion of a metal stem on which bristles of the brush are fixed, the terminal portion of the stem being retained in the moulding position by a through seat of a mould which closes on the stem, and wherein, prior to the moulding of the head portion, it is provided to apply a covering sheath of elastically yieldable material on the terminal portion of the stem, the sheath being of elongate tubular shape having a length of at least 2.5 mm.