Abstract: A door, in particular vertical-lift door, for closing an opening in a wall, in particular in a wall which separates two different temperature zones from one another, having a movable, flexible door leaf which comprises multiple separate, flexible door leaf layers which are guided such that they are spaced apart from one another in the closed state of the door, and having at least one winding shaft onto which the door leaf can be wound up in order to open the door, in which two adjacent door leaf layers are connected to one another by at least one spacer which ensures a spacing, defined by the spacer, of the two door leaf layers at least in the region of the spacer in the closed state of the door.

Abstract: A door, in particular vertical-lift door, for closing an opening in a wall, in particular in a wall which separates two different temperature zones from one another, having a movable, flexible door leaf which comprises multiple separate, flexible door leaf layers which are guided such that they are spaced apart from one another in the closed state of the door, and having at least one winding shaft onto which the door leaf can be wound up in order to open the door, in which two adjacent door leaf layers are connected to one another by at least one spacer which ensures a spacing, defined by the spacer, of the two door leaf layers at least in the region of the spacer in the closed state of the door.

Abstract: A door, in particular vertical-lift door, for closing an opening in a wall which separates two different temperature zones from one another, in particular the wall of a cold storage facility, having a movable, flexible door leaf which is designed for thermally separating the two temperature zones with thermally insulating action and which comprises multiple unconnected, flexible door leaf layers, wherein at least one door leaf layer is of thermally insulating form—insulation layer—through the use of heat-insulating material, and having a winding shaft housing in which at least one winding shaft is arranged onto which the door leaf can be wound up in order to open the door, in which the winding shaft housing is of thermally insulating form through the use of heat-insulating material.

Abstract: A door for closing an opening in a wall, preferably a wall which separates two different temperature zones from one another, in particular one belonging to a cold store, having a door leaf (22), which can be moved in front of the wall opening, and having a heater for heating at least one door component.

Abstract: A door for closing an opening in a wall, preferably a wall which separates two different temperature zones from one another, in particular one belonging to a cold store, having a door leaf (22), which can be moved in front of the wall opening, and having a heater for heating at least one door component.

Abstract: In a method for protecting a surface from impact a selected surface portion of the surface, which may encounter an impact by an object is inserted in a yielding manner in the surface. When the surface portion is knocked out of the surface in the event of the impact, the surface portion can then be reinserted and connected to the surface.