Method and device for producing a toothbrush by the two-component or multi-component injection-molding process

A method for producing a toothbrush with a body which comprises at least a handle region, a neck region and a head region by the two-component or multi-component injection-molding process, the body consisting at least partially of a first and a second component and having segments which are separated from other regions of the body, with the following steps:

• providing a first mold with first hollow regions, which correspond to the segments to be produced by the first component, and also with a second hollow region, to which the first component can be supplied and which is in connection with the first hollow region in such a way that material supplied to the second hollow region is supplied also to the first hollow region;
• providing a second mold with third hollow regions, which are located at least in the region around the segments;
• injection-molding the segments in the first hollow regions by supplying the first component to the second hollow region;
• removing the solidified material remaining behind in the second hollow region;
• changing the mold;
• and
• injection-molding connecting elements between the segments or the other regions of the body by supplying the second component to the second mold,
• wherein the first hollow regions of the first mold and the third regions of the second mold are completely separated from each other.

A method for producing a toothbrush with a body which comprises at least a handle region, a neck region, a head region and a carrier element connected to the head region and produced by the two-component or multi-component injection-molding process, the carrier element consisting at least partially of a first and a second component and having segments which are separated from other regions with the following steps:

• providing a first mold with first hollow regions, which correspond to the segments to be produced by the first component kept at a distance from the other regions and also with a second hollow region, to which the first component can be supplied and which is in connection with the first hollow regions in such a way that material supplied to the second hollow region is supplied also to the first hollow regions;
• providing a second mold with third hollow regions, which are located at least in the region around the segments;
• injection-molding the segments in the first hollow regions by supplying the first component to the second hollow region;
• removing the solidified material remaining behind in the second hollow region;
• changing the mold;
• injection-molding connecting elements between the segments or the other regions of the body by supplying the second component to the second mold;
• and
• at least partially connecting the carrier element to the body,
• wherein the first hollow regions of the first mold and the third regions of the second mold are completely separated from each other.