Toothbrush with injection-moulded bristles and method and apparatus for producing the same

A toothbrush comprising:

• 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,
• wherein the injection-molded bristles are produced from a bristle material using the injection molding method, and have a bristle stem,
• wherein the bristle carrier comprises a small carrier plate produced from a hard material using the injection molding method and fastened on the brush body in a small carrier plate accommodating recess in a head region of the brush body into which the small carrier plate is inserted in its assembled state, and
• wherein the hard material of the bristle carrier or the hard material of the small carrier plate is harder than the bristle material,
• the toothbrush further comprising a tongue cleaner on the side facing away from the bristles, injected on the bristle carrier and made from a soft material wherein a Shore hardness of the tongue cleaner is lower than a Shore hardness of the bristle material.

A toothbrush comprising:

• 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,
• wherein the injection-molded bristles are produced from a bristle material using the injection molding method, and have a bristle stem,
• wherein the bristle carrier comprises a small carrier plate produced from a hard material using the injection molding method and fastened on the brush body in a small carrier plate accommodating recess in a head region of the brush body into which the small carrier plate is inserted in its assembled state,
• wherein the hard material of the bristle carrier or the hard material of the small carrier plate is harder than the bristle material, and
• wherein extruded, conventional bristles being arranged on the bristle carrier are provided.

A toothbrush comprising:

• 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,
• wherein the injection-molded bristles are produced from a bristle material using the injection molding method,
• wherein the bristles have a bristle stem and a bristle end and the bristle carrier comprises a small carrier plate that is produced from a hard material using the injection molding method and fastened on the brush body,
• wherein bundles with extruded, conventional bristles are arranged on the bristle carrier or the small carrier plate, the number of bristles with extruded, conventional bristles being greater than the number of bristle ends of injection-molded bristles, and
• wherein further bristle bundles, which do not stand at right angles with respect to the surface of the bristle carrier, can be formed of extruded, conventional bristles, wherein the further bristle bundles form a so-called X position or protrude laterally beyond the brush head.

A toothbrush comprising:

• a brush body;
• 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;
• and
• a massaging and cleaning element protruding on the same side of the bristle carrier as the injection-molded bristles,
• wherein the injection-molded bristles are produced from a bristle material using an injection molding method and the massaging and cleaning element is injection molded on the bristle carrier and is made from a soft material, a Shore hardness of the soft material massaging and cleaning element being lower than a Shore hardness of the bristle material,
• wherein the bristle carrier comprises a small carrier plate that is produced from a hard material using the injection molding method and fastened on the brush body in a small carrier plate accommodating recess in a head region of the brush body into which the small carrier plate is inserted in its assembled state,
• wherein bundles with extruded, conventional bristles are arranged on the bristle carrier or the small carrier plate, and
• wherein the bristles with extruded, conventional bristles are melted on their end facing away from the usage-side end.

A toothbrush comprising:

• a brush body including a handle part, a neck part and a head part, the head part having a front side and a rear side;
• 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,
• wherein the injection-molded bristles are produced from a bristle material using the injection molding method,
• wherein the bristle carrier comprises a small carrier plate fastened in a corresponding recess in the head part or wherein the bristle carrier is formed by the head part,
• wherein on the rear side of the head part a distribution channel is situated, the distribution channel being fluidly connected to the front side of the head part via multiple passages, and
• wherein the bristle material is non-releasably connected by means of positive and/or friction locking to the bristle carrier without forming a material bond with the hard material of the bristle carrier,
• the toothbrush further comprising at least one of (a) a tongue cleaner on a side facing away from the injection-molded bristles, injected on the bristle carrier and made from a soft elastomeric material, and (b) a massaging and cleaning element protruding on a same side of the bristle carrier as the injection-molded bristles and made from a soft elastomeric material.

A toothbrush comprising:

• a brush body including a handle part, a neck part and a head part, the head part having a front side and a rear side;
• 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,
• wherein the injection-molded bristles are produced from a bristle material using the injection molding method,
• wherein the bristle carrier comprises a small carrier plate fastened in a corresponding recess in the head part or wherein the bristle carrier is formed by the head part,
• wherein the bristle carrier of the head part further comprises multiple passages,
• wherein the bristle material wraps around the head part from an outside or through the passages of the head part, and
• wherein the hard material of the bristle carrier is harder than the bristle material,
• the toothbrush further comprising at least one of (a) a tongue cleaner on a side facing away from the injection-molded bristles, injected on the bristle carrier and made from a soft elastomeric material, and (b) a massaging and cleaning element protruding on a same side of the bristle carrier as the injection-molded bristles and made from a soft elastomeric material.