Curtain wall panel and method

• US 4,646,498 A
• Filed: 12/05/1985
• Issued: 03/03/1987
• Est. Priority Date: 05/28/1985
• Status: Expired due to Fees

• Current Assignee: National Gypsum Properties LLC
• Original Assignee: National Gypsum Properties LLC
• Inventors: Robinson, J. Stephen, Kossuth, Donald A., Schneller, Joseph W.
• Primary Examiner(s): Friedman, Carl D.
• Application Number:
  US06/804,629
• Time in Patent Office: 453 Days
• Field of Search: 52/309.12, 52/612, 52/405, 52/309.17, 428/247, 428/319.1, 428/318.4, 428/192
• US Class Current: 52/309.12
• CPC Class Codes: E04B 2/92 Sandwich-type panels

Abstract

A laminated curtain wall panel is prepared by continuously disposing foam boards onto adhesively coated gypsum sheathing followed by a third layer consisting of a reinforcing mesh and a cementitious binder, as the product progresses on a conveyor. The laminated product is erected by screws which are forced through the panel by a screw gun which disposes the screw head firmly against the gypsum sheathing.

Claims

1. A prefabricated laminated curtain wall panel comprising three layers, the first layer being a sheathing board, the second layer being a plastic foam insulation board and the third layer being a latex-modified Portland cement layer of about 0.016 inch thickness within which there is embedded a web of fiber glass mesh of about 0.012 inch thickness.

2. A prefabricated laminated panel as defined in claim 1 wherein said sheathing board is a gypsum sheathing board of about 1/2 inch thickness, and said panel has a width and length of about four feet and eight feet, respectively.

3. A prefabricated laminated panel as defined in claim 1 wherein said sheathing board is a gypsum sheathing board of about 1/2 inch thickness which is adhesively bonded to polystyrene bead board having a thickness of about 1/2 inch to 3 inches.

4. A prefabricated laminated panel as defined in claim 1 wherein said insulation board has a taper formed along each side on the surface to which the third layer is adhered, and wherein said third layer has a substantially uniform thickness and conforms to the taper on said insulation board surface.

5. A prefabricated laminated panel as defined in claim 4 wherein said taper is about one and one-half inches wide and about 3/32 inch deep.

6. A prefabricated laminated panel as defined in claim 1 wherein said latex-modified Portland cement is formed from a slurry which comprises, by weight, about 100 parts of Portland cement, about 72 parts of fine sand and about 15 parts of an acrylic latex emulsion which is about 50% water.