US 7,083,756 B2 · Method for producing a toothbrush

Abstract

A method for efficiently producing injection molded toothbrush handles wherein two or more adjacent cavities in a mold are respectively configured to mold a first portion of a handle and a second portion of a handle, wherein upon injection molding of the first portion in a first cavity, the second portion is simultaneously injected into a second cavity into which a previously molded fist portion has been placed after its removal from the first cavity, thereby to immediately contact the previous first portion with the newly injected second portion. A third portion may also be injected into a third cavity into contact with a previously injection molded contacting first and second toothbrush handle portion. In this manner, seriatim transfer of the said portions between cavities enhances product output. The handle may include transparent or translucent portions.

Claims10

Dependent claims

A method for producing a toothbrush from at least one material component, comprising:

injecting the material component for forming a toothbrush handle into a first cavity of an injection mold;
subsequently transferring the injected material component after partial cooling and hardening into a cooling cavity of the injection mold not provided with any injection point or injection channel in order to further cool and harden the material, whereby no injection-molding operation takes place in the cooling cavity;
subsequently transferring the further cooled and hardened material component into a third cavity of the injection mold;
and
injecting a second material component into the third cavity into contact with the cooled and hardened material component of the toothbrush handle.

2 more elements

Dependencies are inferred from the claim text.

Method for producing a toothbrush

Life of this patent

Method for producing a toothbrush

Life of this patent

Abstract

Claims10