The present invention provides a composite panel for use in construction, and particularly for shingling, which comprises natural fiber and a polymer. Due to its composition and layout the construction panel provides all of the advantages of natural materials and high end roofing materials, particul
The present invention provides a composite panel for use in construction, and particularly for shingling, which comprises natural fiber and a polymer. Due to its composition and layout the construction panel provides all of the advantages of natural materials and high end roofing materials, particularly an attractive appearance, while at the same time allowing for ease of installation, little or no maintenance requirements, and providing superior impact and fire resistance when compared to other roofing materials. The construction panels can also be installed using conventional equipment and methods similar to the installation of 3-tab asphalt shingles with little or no learning curve.
대표청구항▼
What is claimed is: 1. A construction panel comprising: (a) an upper portion; and (b) a lower portion, wherein said lower portion provides the appearance of a plurality of vertically extending members wherein each of said vertically extending members is an appropriate size and shape to provide the
What is claimed is: 1. A construction panel comprising: (a) an upper portion; and (b) a lower portion, wherein said lower portion provides the appearance of a plurality of vertically extending members wherein each of said vertically extending members is an appropriate size and shape to provide the appearance of a shingle, shake or a tile; wherein the panel comprises: (i) from about 40 percent to 75 percent natural plant fiber; (ii) from about 20 percent to 60 percent of a synthetic polymer, (iii) up to about 3 percent coupling agent; (iv) up to about 0.5 percent antioxidant; (v) up to about 2 percent pigment; (vi) up to about 5 percent fungicide; (vii) up to about 10 percent inorganic filler; and (viii) up to about 20 percent flame retardant. 2. The panel of claim 1 wherein the plurality of members have non-uniform width, non-uniform length, or both non-uniform width and non-uniform length. 3. The panel of claim 1, wherein the plurality of vertically extending members further comprise non-uniform lower edges. 4. The panel of claim 1, wherein the lower portion of the panel further comprises a textured surface. 5. The panel of claim 4, wherein the textured surface replicates the appearance of a material selected from the group consisting of wood, clay, ceramic, slate, tile and combinations thereof. 6. The panel of claim 1, wherein the fiber is selected from the group consisting of wood flour, sugar cane bagasse, hemp, coconut coir, jute, kenaf, sisal, flax, coir pith, rice-hulls and cotton, and combinations thereof. 7. The panel of claim 1, wherein the polymeric material is polyethylene, polypropylene and combinations thereof. 8. The panel of claim 7 wherein the polyethylene is selected from low density polyethylene, high density polyethylene, linear low density polyethylene and linear high density polyethylene. 9. The panel of claim 17 wherein adjacent members of the plurality of vertically extending members are connected together by a web of material. 10. The construction panel of claim 1, wherein the panel comprises from about 50 to about 70 percent natural plant fiber and from about 20 to about 40 percent of a synthetic polymer. 11. The construction panel of claim 1, wherein the panel is a homogenous composition. 12. The panel of claim 1, wherein the construction panel has an impact razing of class 3 or 4 under UL standard 2218. 13. The panel of claim 1, wherein the construction panel has a class A, B, or C fire classification UL standard 790. 14. The panel of claim 1 wherein the plurality of members have uniform widths and lengths. 15. The panel of claim 1 wherein the panel has two to seven vertically extending members. 16. The panel of claim 1 wherein the panel is up to about six feet by four feet. 17. The construction panel of claim 1, wherein said lower portion comprises a plurality of vertically extending members wherein each of said vertically extending member is an appropriate size and shape to provide the appearance of a shingle, shake or a tile. 18. A construction panel comprising: (a) an upper portion; and (b) a lower portion, said lower portion comprising a plurality of vertically extending members wherein each of said vertically extending members is an appropriate size and shape to provide the appearance of a shingle, shake or tile; wherein the panel comprises (i) from about 40 percent to 75 percent natural plant fiber; (ii) from about 20 percent to 60 percent of a synthetic polymer; (iii) up to about 3 percent coupling agent; (iv) up to about 0.5 percent antioxidant; (v) up to about 2 percent pigment; (vi) up to about 5 percent fungicide; (vii) up to about 10 percent inorganic filler; and (viii) up to about 20 percent flame retardant.
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