Method for Making a Toothbrush
AssigneeM+C Schiffer GmbH
InventorErwin Buchholz
Life of this patent
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Abstract
A method for making a toothbrush including a handle, a head including at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge including a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component is provided, the method including: forming a base body by injection molding of a first thermoplastic material forming one of the handle or the head, and injection molding of a second thermoplastic material for forming the other of the handle or the head to thereby fuse the second thermoplastic material against the first thermoplastic material; placing the base body into a further mold; and injection molding the softer thermoplastic component for covering the joint.
Claims16
A method for making a toothbrush comprising a handle, a head comprising at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge comprising a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component, said method comprising:
- forming a base body by injection molding of a first thermoplastic material forming one of the handle or the head, and injection molding of a second thermoplastic material for forming the other of the handle or the head to thereby fuse the second thermoplastic material against the first thermoplastic material;
- placing the base body into a further mold;
- and
- injection molding the softer thermoplastic component for covering the joint.
A method for making a toothbrush comprising a handle, a head comprising at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge comprising a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component, said method comprising:
- forming a base body in a first mold, which is dividable by a movable gate, wherein a first thermoplastic material is injection molded into a portion of the first mold closed by the movable gate and wherein the movable gate is opened after injection molding of a predetermined volume of the first thermoplastic material into the first mold, corresponding essentially to the volume of the first thermoplastic material of the final product, and wherein the second thermoplastic material is injection molded into the first mold after the gate has been opened.
A method for making a toothbrush comprising a handle, a head comprising at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge comprising a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component, said method comprising:
- forming a base a body in a first mold which is dividable by a movable gate, wherein the movable gate is adapted to provide formfit forming surfaces, wherein the first thermoplastic material is formed against the movable gate to provide formfit surfaces formed by the formfit forming surfaces of the movable gate and wherein the second thermoplastic material is injection molded against the formfit surfaces thereby providing formfit counter surfaces to connect the handle with the head in a positive fit.
Dependencies are inferred from the claim text.