(57) In a fire-resistant sliding door (1) comprising a frame (2) and two door leaves (3,
4) the frame and the door leaves comprise vertical interconnected steel profile sections
(5) framed by fire-retardant sheets of glass (6). The door leaves (3, 4) are suspended
in aligned relationship from the door frame (2) and are displaceable forwards and
backwards in the door-frame plane between a closed position ©, wherein the confronting
front edges (13, 14) of the door leaves abut against one another via a gasket (15)
in order to close a through-passage opening (16) in said frame (2), and an open position
allowing passage-through by way of said opening (16). The gasket (15) comprises a
vertical strip seal (17) of U-shaped configuration the web portion (18) of which is
connected to the front edge (13) of one (3) of the door leaves while the two flanges
(19) of said seal are arranged, upon closing of the door, to be moved into fire-resisting
and sealing abutment against the front edge of the other door leaf (4), and also a
vertical U-shaped steel profile section (24) the two flanges (25) of which are connected
to the front edge (14) of the opposite door leaf (4) opposite the strip seal (17)
and the web portion (27) of which is arranged, upon closing of the door, to be moved
together with the flanges (25) into fire-resisting and sealing abutment against the
side walls of the U-shaped channel (29) of the strip seal (17).
|
|
