Process and device for the production of polyurethane moldings by the shot process

US6261486A · kind A · utility

Assignee

• HENNECKE GMBH · DE

Inventors

• Hans-Michael Sulzbach · Rübhausen, DE
• Ferdinand Althausen · Neunkirchen, DE

Key dates

• Filing date: Jul 20, 1999
• Grant date: Jul 17, 2001
• Expiry date: Jul 20, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B13/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

For the production of polyurethane moldings by the shot process from isocyanate and polyol components, the production is improved in that, in addition to the conditioning already known for the line system, at least one of the commercially available but modified metering pumps is also conditioned in that some of the reaction component made available flows in circulation through the intermediate space between the enclosed metering component and housing of the pump.