Process of and apparatus for extruding a polymer frame onto a plate-shaped object

US5908595A · kind A · utility

Assignee

• Saint-Gobain Vitrage · FR

Inventors

• Gerd Cornils · Düren, DE
• Herbert Joeris · Würselen, DE
• Rolf Kotte
• Heinz Scholl · Eschweiler, DE

Key dates

• Filing date: Jul 3, 1997
• Grant date: Jun 1, 1999
• Expiry date: Jul 3, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C48/302
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

This invention concerns a device used in the process of manufacturing an automobile pane 1 equipped with a polymer frame 52 placed on the edge of the pane 1. The frame 52 is extruded onto the pane 1 which can be moved by means of a suitable support in such a way that the edge of the pane travels through a recess in an extrusion head 25 and 40. The recess of the extrusion head 40 preferably includes a U-shaped jaw 41 straddling the edge of the pane. At the front extremity of the two half-jaws of the U-shaped jaw 41 there are disposed sealing ledges or shoes 42 and 43 which are movable perpendicularly to the surfaces of the pane and which, during extrusion, bear upon the surfaces of the pane. Alternatively, the extrusion head can include a fixed jaw where the sealing ledges or shoes slideably and sealingly contact the plate.