The Procter Gamble Company

The Gillette Company

Harald Schnizer

Klaus Eimann

Gerald Görich

Nicolas Götz

Viktor Kraft

Gerald Goerich

Dagmar Koppler

Lena Stibor

Nicolas GÖTZ

Gerald GÖRICH

A toothbrush comprised at least one unitary brush head having a base and at least one filament and extending therefrom and having a free end terminating with a tip, wherein the filament has a length of from 6.0 mm to 20.0 mm between the base and the free end, and wherein the unitary brush head is made from a plastic material that has a melt flow rate of not greater than about 30 g/10 min measured in accordance with ISO 1133.

Method of making a unitary brush head and unitary toothbrush head

A method of manufacturing a unitary toothbrush head having a base and filaments extending therefrom. The method includes steps of injecting molten plastic material into a mold cavity having a pre-base cavity and a filament cavity extending therefrom; compressing the molten plastic material, once it is essentially filling the pre-base cavity, by impressing a punching tool into the molten plastic material from the rear side of the pre-base cavity being opposite to a side from which the filament cavity extends; and filling the filament cavity with the molten plastic material under the continuous impression of the punching tool.

A molding material having from about 10 weight percent to about 25 weight percent of an amorphous thermoplastic resin, from about 3 weight percent to about 25 weight percent of aluminum oxide, boron nitride or aluminum silicate and from about 65 weight percent to about 87 weight percent of iron oxide.

Molding material

Growing community of inventors

Kronberg, Germany

Harald Schnizer