Christopher M Blalock

US Patent:

61945196, Feb 27, 2001

Filed:

Jul 20, 1998

Appl. No.:

9/118962

Inventors:

Christopher Blalock - Halls TN
Larry Nelson - Dyersburg TN

International Classification:

C08J 300
C08K 334
C08L 4500
C08L 5500
C08L 900

US Classification:

525232

Abstract:

The present invention relates to low-cost, efficiently-manufactured, polymer-based products useful as roofing shingles and similar products. The inventive shingles are weatherproof, inexpensive to manufacture and durable, particularly as contrasted with conventional shingles in areas of the country subject to hail damage. The invention also includes a method of making such shingle products. In a preferred embodiment, products of this invention use rubber material as the polymer base in combination with specific types of polyolefins. The rubber material can be most efficiently provided by the use of crumb rubber particles from spent automobile tires and other recycled rubber debris which are readily available and of very low cost. The products will have an average life far greater than that of current commercial roofing shingles, which are made using fiberglass or asphalt. The products of the instant invention are produced by extrusion as a mixture of materials, which product and its materials can be summarized as follows as a roofing shingle product which comprises: a.