Method for producing a toothbrush, and toothbrush

Abstract

A grip body of a body care article, such as toothbrush, includes a grip part, a neck part and a head part. The grip body includes a first and a second material component of a thermoplastic plastic. The first and the second material component have a common injection point that is arranged outside a mould partition line formed by the mould partition.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to the field of grip bodies, in particular for body care articles or cosmetic articles, such as toothbrushes, tongue cleaners, wet-shaving sticks, oral hygiene articles, mascara applicators, nail varnish applicators, lipstick applicators, etc. The invention in particular relates to a grip body for a toothbrush, with a grip part, with a neck part and with a head part, wherein the grip body comprises at least one first and a second material component of thermoplastic plastic. The invention moreover relates to a method for manufacturing such a grip body as well as to an injecting moulding tool for carrying out the method.[0003]2. Description of Related Art[0004]It is known to manufacture grip bodies for body care and cosmetic products, in particular for toothbrushes, of plastic by way of an injection moulding method, wherein the grip body is injection moulded from several different thermoplastic plast...

AI Technical Summary

Benefits of technology

[0007]It is therefore the object of the invention, to provide a grip body of the initially mentioned type, which comprises two or more material components of plastic, which with regard to their functional purpose are arranged in the grip body in a targeted manner. The grip body should be manufacturable in a simple manner with few method steps as well as inexpensively despite the application of different functional material components in the grip body. The manufacture of the injection moulding mould should be inexpensive and make do with a minimal sequence of cavities. Advantageously therefore, several material components should be injected in a cavity. Moreover, the grip body should permit a high degree of automisation in manufacture and be manufacturable in large piece numbers.

Problems solved by technology

Thus, the tooling costs are quite high due to the use of several tool cavities for the manufacture of an injection moulded part.

Moreover, the manufacturing speed and thus the productivity are comparatively low due to the reapplication step.

Injection points however compromise the appearance of a grip body, so that the number of such injection points or of injection points on the surface is to be kept as low as possible.

Moreover, the fashioning or design possibilities of the grip body manufactured from different material components remain limited despite the mentioned technical possibilities.

A so-called interflowing of different plastic components is not possible, or can only be implemented by way of the application of complicated and expensive injection moulding moulds.

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