Patent ID: 6863970

Claim:
A combination fastener and foam sheet having enhanced fastener retention so that the fastener is not easily removed from the foam sheet when an outward force is applied thereto, the combination comprising: a foam sheet having a polyolefin blend, a glass material, and a non-polyolefin foam material, the non-polyolefin foam material contacting and substantially surrounding the polyolefin blend and the glass material, the polyolefin blend comprising a polyolefin and a fibrous material, the polyolefin being selected from the group consisting of polyethylene and polylpropylene and the fibrous material comprising at least one sheet of fibrous material to enhance bonding of the polyolefin to the non-polyolefin foam and the non-polyolefin foam material comprising a high density, high strength, and lightweight foam, the high density being in a range of about 18 pounds per cubic foot to about 28 pounds per cubic foot; and a fastener having threaded portions positioned within the foam sheet so that the threaded portions are retained in the foam sheet and are not easily removed when an outward force is applied thereto.