Loading patent…
AssigneeBraun GmbH
InventorsAndreas Birk, Lars Foerster, Ulrich Pfeifer, Klaus Amsel, Guenther Alschweig
Estimating the term…
A brush head, particularly a toothbrush head, may have a plurality of cleaning elements, in particular bristle tufts, which are anchored by an end section in a brush carrier, wherein the cleaning elements may be cast with positive engagement in blind-hole shaped retaining recesses. For producing such a brush head different cleaning elements may be placed successively or simultaneously in different mold cavities and may be over-molded using different plastic materials from which injection-molding sections of the bristle carrier are formed in the process. In doing so, a first cleaning element is over-molded in a first mold cavity using a first plastic material, while a second cleaning element is over-molded in a second mold cavity using a second plastic material.
A method for producing a brush head in which cleaning elements are over-molded at one of their ends using a plastic material, wherein a bristle carrier is formed at least partially during the over-molding process, wherein at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof, are positioned successively or simultaneously in at least two different mold cavities such that the at least two different cleaning elements are over-molded using at least two different plastic materials in the at least two different mold cavities, wherein a first injection-molding section of the bristle carrier consisting of a first plastic material and a second injection-molding section of the bristle carrier consisting of a second plastic material are formed, wherein the surrounding area of a second one of the at least two different cleaning elements is separated from the injected plastic material during the over-molding of a first one of the at least two different cleaning elements by a first mold part, and wherein during the over-molding of a second one of the at least two different cleaning elements a previously over-molded first cleaning element and the injection-molding section molded thereon are separated from the injected plastic material by a second mold part.
Dependencies are inferred from the claim text.