Patent ID: 6177180
Filing Date: 2001-01-23
Classification: B32B,E04C,E04F,Y10T

Abstract:
A composite board for use in building construction and adapted to be attached to a building with fasteners, said composite board comprising:a polymer sheet having two opposed faces and being formed of a thickness and polymer composition that are preselected such that penetration of said polymer sheet by a fastener causes said polymer sheet to deflect around the fastener, said composite board having a predetermined retraction resistance and a predetermined capacity to bear a load carried by the fastener;a first sheet of material being attached to one of said opposed faces of said polymer sheet;a second sheet of material being attached to the other one of said opposed faces of said polymer sheet;said composite board being securable to the building with the fasteners extending through said first sheet of material, said polymer sheet and said second sheet of material so as to completely penetrate said composite board and, when so secured, providing a load bearing panel to which an ancillary facade can be attached; andwherein said preselected thickness of said polymer sheet is in the range of from about 30 to about 50 mils and wherein said preselected polymer composition is selected from the group consisting of polyamide, polystyrene, polyvinyl chloride, polyester, and acrylic, said thickness and polymer composition in conjunction with said first and second sheets providing a retraction resistance of at least about 15 pounds.