Method to manufacture an injection molded component and injection molded component

US9993066B2 · kind B2 · utility

Assignee

• The Gillette Company LLC · US

Inventors

• Andreas Bresselschmidt · Weiterstadt, DE
• Jochen Ganninger · Eschborn, DE
• Benedikt Heil · Diez, DE
• Uwe Jungnickel · Königstein, DE
• Joerg Kotitschke · Idstein, DE
• Andreas Reuschenbach · Bad Soden, DE
• Holger Schulz · Frankfurt, DE

Key dates

• Filing date: Dec 16, 2014
• Grant date: Jun 12, 2018
• Expiry date: May 6, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24273
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for manufacturing an injection-molded first component of an article, in particular a handle or a head of a toothbrush, having a sheath element with a cavity and a recess extending from the cavity into a wall of the sheath element surrounding the cavity, including the steps of: (1) providing a first mold having first mold components that define a first mold cavity in the form of a pre-sheath element having a through hole in the pre-sheath element at the location where the recess shall be formed, (2) injection-molding of the pre-sheath element using a first plastic material, (3) closing the through-hole with a lid element, (4) providing a second mold having second mold components for receiving the pre-sheath element and for defining a remaining second mold cavity that extends at least over a part of a parting line between the lid element and the pre-sheath element when the pre-sheath element is inserted in the second mold, (5) inserting the pre-sheath element into the second mold, and (6) connecting the lid element with the pre-sheath element by injecting a second plastic material into the remaining second mold cavity such that the sheath element is formed.