Apparatus for the continuous production of pipes with cross-profiled walls

US4787598A · kind A · utility

Assignee

• Unicor GmbH

Inventors

• Horst Rahn · Haßfurt, DE
• Helmut Grull · Riedbach, DE

Key dates

• Filing date: Nov 13, 1987
• Grant date: Nov 29, 1988
• Expiry date: Nov 13, 2007

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2023/18
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an apparatus for the continuous production of pipes with cross-profiled walls from a pipe strand of thermoplastic plastic emerging in still plastic state from an extrusion nozzle.