Method for obtaining multiple glazing and device for using said method
AssigneeSaint-Gobain Vitrage
InventorsMichel Canaud, Philippe Dewitte
Life of this patent
Estimating the term…
Abstract
The invention relates to multiple glazing, a method for obtaining the same and a device for using said method. The glazing contains two sheets of glass separated by a space of dehydrated air and maintained by a cross-braced frame, of which at least the surface in contact with the glass is a butyl and/or polyisobutylene rubber-based mastic and is covered with a peripheral injection, which adheres in a cohesive manner to the mastic of the cross-braced frame.
Claims18
A method for manufacturing a multiple glazing having at least two sheets of glass separated by an interposed gas space, and having a means for maintaining said glass sheets substantially mutually parallel, wherein said maintaining means comprises a cross-braced frame a portion of said cross-braced frame comprising butyl rubber or polyisobutylene-based mastic and a peripheral joint, comprising the steps of:
- laying said cross-braced frame on a first sheet of glass;
- contacting said cross-braced frame with a second sheet of glass to form a provisional glazing;
- placing said provisional glazing into a mold, said mold defining an injection cavity around the periphery of said provisional glazing;
- pressing by traction each said sheet of glass against a respective wall of said mold;
- and
- injecting a plastic into said mold injection cavity under pressure.
A device for producing a multiple glazing, comprising:
- a molding comprising first and second movable half-molds having therein uniform heating means, wherein each said half-mold has means for supporting a glass sheet, and wherein said supporting means defines an annular injection cavity around said supporting means;
- an injection opening in said mold and communicating with said injection cavity;
- an air escape opening in said mold and communicating with said injection cavity opposite said injection opening;
- and
- traction means for holding said glazing in said mold.
Dependencies are inferred from the claim text.