Casting or injection molding of multi-layered shoe soles

US4149696A · kind A · utility

Assignee

• Desma-Werke GmbH · DE

Inventors

• Friedrich Koch
• Hartmut Wetjen · Achim, DE
• Werner Klee · Seuzach, CH
• Peter Rafalski · Achim, DE

Key dates

• Filing date: Nov 3, 1977
• Grant date: Apr 17, 1979
• Expiry date: Nov 3, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C2045/1687
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The bottom or tread layer 18 of a shoe sole 17 is formed with a beaded flange 26 extending outwardly around its upper edge, which serves as a barrieragainst the incursion of the material of the upper sole layer 19 into the side face region 20 of the sole during the casting or moulding of the upper layer. The flange is subsequently removed to leave a clean separation line between the two sole layers.