Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Patent
1994-04-18
1997-01-07
Wood, Wynn E.
Static structures (e.g., buildings)
With synthetic resinous component
Foam
264 465, 264277, 425 89, 2491141, 249115, 249170, 249 83, 249 85, 249155, E04C 210, B29C 3300
Patent
active
055904998
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a process for producing a prefabricated, insulating, angular wall element consisting of an angular rigid foam panel with brick fillets which are bonded thereto and separated from one another by a mortar-like composition, a device for carrying out a process of this kind clause of Claim 7 and an insulating, angular wall element consisting of angular brick fillets bonded by means of an angular rigid foam panel and separate from one another.
For insulating buildings it is known to apply onto the exterior side-of the wall prefabricated facing panels which are formed as composite panels from a rigid polyurethane foam and brick fillets. The individual fillets are separated from one another by mortar joints. In this manner a building wall can be completely insulated retrospectively, the building wall having the appearance of a masonry wall.
Facing panels of this kind are known from German Utility Model 82 01 949.5. For the production of these elements, fillets are arranged at a clearance from one another in a mold and the joints formed are filled with a mixture of sand. Subsequently the mold is foamed with polyurethane foam, the foam, on account of its distribution, penetrating even into the joints between the fillets and consolidating the joints on curing.
Although the process can be used advantageously for flat wall regions, problems occur at building edges, window and door openings, that is to say at all regions of the building at which edge regions are at an angle to one another. In these regions it is therefore normally necessary to provide the abutting wall elements with mitre edges and adhesively bond them together. If angle joints of this kind are not formed with close tolerances, shoulders result which both spoil the optical appearance and are subject to damage.
The invention is therefore based on the object of specifying a process for producing a prefabricated, insulating, angular wall element by means of which a retrospective adhesive-bonding of panel-shaped wall elements can be avoided, the production time of the angular wall element can be kept very small and, in addition, the erection time for insulating a building is significantly reduced. The invention is further based on the object of specifying a device for carrying out a process of this kind and a wall element produced according to this process.
According to the process according to the invention, angular, one-part fillets, which are known per se, are laid adjacent to one another with a clearance in a horizontal mold with an essentially V-shaped cross-section. The interspaces between the fillets are filled with a mixture of sand and isocyanate. Between the reverse surfaces of the fillets and the sand/isocyanate mixture and a countermold, polyurethane foam is introduced, a part of the polyurethane penetrating into the sand/isocyanate mixture before the polyurethane introduced finally cures.
A device according to the invention for carrying out the process has two mold parts which can be assembled with brick-shaped recesses to receive angular fillets in order to form a trough-shaped mold and onto which a countermold can be placed with the formation of a clearance.
Finally, a wall element in a preferred embodiment of the invention, produced according to the process according to the invention with the device according to the invention, consists of an angular rigid foam panel with angular brick fillets which are bonded thereto, laid in a sand/polyurethane mixture and in which the rigid foam material preferably additionally permeates the sand/isocyanate mixture.
The invention makes possible the production of an angular wall element which can be used in particular as a corner part of buildings to be insulated. It can also readily be used as a composite with flat panels produced in a similar manner. The invention has the advantage that wall elements of this kind can be brought already prefabricated onto the construction site without an in situ adhesion bonding of flat wall elements being necessary there. The mitre connection of t
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Societe Ceramique de La Lys, "Panogil" Bulletin des Avis Techniques Mar. 1991.
Freiburger Thomas M.
Wood Wynn E.
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