Method for producing a toothbrush
AssigneeM + C Schffer GmbH
InventorAndreas Lanvers
Life of this patent
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Abstract
The present invention relates to a method and an apparatus for producing a toothbrush comprising a handle and a brush head provided with a plurality of bristle bundles. A basic body of a brush head is produced preferably from a hard component in an injection-moulding means, the bristle bundles being embedded at their ends in bristle-bundle holding sections which are connected by bridge portions. These bridge portions are cut through and the basic body of the brush head is encompassed preferably with a soft component by injection moulding.
Claims13
A method of producing a toothbrush including a handle, and a brush head provided with a plurality of bristle bundles, said brush head having at least first and second components, comprising:
- (a) injection moulding a basic body of a brush head to define a first component in a first mould cavity, the bristle bundles being embedded at their ends into at least one bristle-bundle holding section consisting of said first component and said bristle-bundle holding section being connected by at least one bridge portion with the other areas consisting of said first component;
- (b) cutting off the bridge portion between the bristle-bundle holding section and the other sections;
- (c) changing the mould cavity to form a second mould cavity that is larger than the first mould cavity in the area of the bristle-bundle holding sections;
- and
- (d) encompassing by means of injection moulding the bristle-bundle holding sections defining said first component with a second component.
Dependencies are inferred from the claim text.