Method for producing a compound glazing sheet and method for implementing the same

US6336490B2 · kind B2 · utility

Assignee

• Saint-Gobain Vitrage · FR

Inventors

• Michael Balduin · Alsdorf, DE
• Hubert Havenith · Würselen, DE
• Michael Labrot · Aachen, DE

Key dates

• Filing date: Jun 6, 2001
• Grant date: Jan 8, 2002
• Expiry date: Jun 6, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2315/08
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present document describes a process for manufacturing a pane of laminated glass without recourse to an autoclave. The pack of layers are composed of stacked layers (6, 7, 8), is raised to the softening temperature of the thermoplastic interlayer of the pack of layers in a preheat channel (1). The preheated pack of layers is put under vacuum in a vacuum assembly station (2) for the purpose of extracting the gas from the spaces separating the layers (6, 7, 8). After the gas has been extracted, the edge of the pack of layers, which is held under vacuum, is mechanically compressed inside the vacuum box and is thus sealed. Finally, the pack of layers is brought to atmospheric pressure and its temperature further increased in a postheat channel (4).