Device for joining by calendering at least one sheet of glass and at least one film of plastic material

US4701240A · kind A · utility

Assignee

• Saint-Gobain Vitrage · FR

Inventors

• Johannes Kraemer · Durmersheim, DE
• Klemens Leclere · Kelmis, BE
• Werner Nuding · Oldenburg, DE
• Heinz Schilde · Würselen, DE

Key dates

• Filing date: Jan 16, 1986
• Grant date: Oct 20, 1987
• Expiry date: Jan 16, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1741
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A calendering device has a plurality of pressure rollers and an opposing plurality of counterpressure rollers, each rotatably mounted on a piston rod movable in a direction for permitting the pressure rollers and counterpressure rollers to approach one another to calender a product. The pistons of the piston rods are mounted within pneumatic casings and are moved by a diaphragm within the pneumatic casings. There is no contact between the pistons and the walls of the pneumatic casings, thereby reducing the frictional resistance to the movement of the rollers. Means are provided for equalizing the pressure applied to a roller and its corresponding counter roller. Separate pneumatic casings and diaphragms may be provided for each piston rod, or several of the pressure rollers or countepressure rollers may be moved by a single diaphragm, which can be in the form of an elongated hose. In the case of the provision of individual pneumatic casings for each roller, pressure regulating means can be provided for each pair of a pressure roller and its corresponding counterpressure roller.