Vetrotech Ag

Vetrotech Saint-gobain (international) Ag

Gevartis Ag

Interver Ag

Horst Seidel

Simon Frommelt

Klaus Wildenhain

Christoph Giesbrecht

Walter Egli

Chrisoph Schmalt

Jan Strejcek

Christoph F G Schmalt

Markus Thiede

Georg F Hesselbach

Fire-retardant sheet element can be composed of several fire protection glass plates ( ). Lateral edges ( ) of adjacent glass plates ( ) therein abut one another. Into the interspace ( ) between lateral edges ( ) a sealing configuration ( ) is installed. This comprises an addition element ( ) and elastic sealing elements ( ). The glass plates ( ) comprise several glass panes ( ) and interspaced fire protection layers ( ). These fire protection layers ( ) do not extend up to the edges ( ) and are sealed in the regions of the lateral edges with a barrier material ( ). No additional frame elements for covering the interspace ( ) and for sealing are necessary.

Fire-inhibiting flat element comprising at least two transparent fire-resisting glass plates

Glass plates are thermally or chemically tempered to increase flexural bending strength. The tempered plates are subsequently subjected to a heat treatment in order to lower the possibility of spontaneous breakage of the glass plates. According to the method according to the invention the glass plates are tempered at least twice and again heat-treated. At least the second heat treatment takes place at higher temperatures than were used previously. The treated glass plates have increased flexural bending strength and reduced tendency to spontaneous breakage.

Method for producing flat or arcuate glass plates

Transparent heat protection element

Growing community of inventors

Walchwil, Switzerland

Horst Seidel