# US 2009/0260770 A1 · Panels including renewable components and methods for manufacturing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260770 A1 - Document ID: US20090260770A1 - Status: Published application - Kind: A1 - Application number: 12/106,077 - Filed: 2008-04-18 - Published: 2009-10-22 - Earliest claimed: 2008-04-18 - Assignees: ISG Interiors, Inc. - Inventors: Bangii CAO; Te Hua Lau; Curt Malone; W. David Song; Martin W. Brown - Web page: https://patentgrep.com/patent/US20090260770A1 ## CPC - E04B 1/86: slab-shaped - C04B 18/24: Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork} - C04B 30/00: Compositions for artificial stone, not containing binders - C08L 97/02: Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} - C04B 2111/00612: {as one or more layers of a layered structure} - C04B 2111/28: Fire resistance, i.e. materials resistant to accidental fires or high temperatures - C04B 2111/52: Sound-insulating materials - Y02W 30/91: Use of waste materials as fillers for mortars or concrete - Y10T 442/2098: At least two coatings or impregnations of different chemical composition - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A panel includes about 0.1% to about 95% by weight of a renewable component. The panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and an STC of at least about 25. A method for manufacturing such panels is also provided. ## Claims ### Claim 1 A panel for use as a building material comprising: about 0.1% to about 95% by weight of a renewable component; wherein said panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and a STC value of at least about 25. ### Claim 2 (depends on 1) The panel of claim 1 wherein said renewable component comprises rice hulls. ### Claim 3 (depends on 1) The panel of claim 1 having an eNRC of at least about 0.20. ### Claim 4 (depends on 1) The panel of claim 1 having an air flow resistivity of less than about 8 mPa·s/m2. ### Claim 5 (depends on 1) The panel of claim 1 having an MOR value of at least about 80 psi. ### Claim 6 (depends on 1) The panel of claim 1 having a bulk density between about 7 lbs/ft3 and about 30 lbs/ft3. ### Claim 7 (depends on 1) The panel of claim 1 having a thickness of between about 0.2 inches to about 1.5 inches. ### Claim 8 (depends on 1) The panel of claim 1 that sags less than about 1.5 inches in a 90% RH humidity chamber. ### Claim 9 (depends on 1) The panel of claim 1 having a flame spread index of less than about 25. ### Claim 10 (depends on 1) The panel of claim 1 having a smoke development index of less than about 50. ### Claim 11 (depends on 1) The panel of claim 1 wherein said renewable component includes less than about 5% by weight of particles that are retained by a mesh screen with openings of about 0.312 inches. ### Claim 12 (depends on 1) The panel of claim 1 wherein said renewable component includes less than about 5% by weight of particles that are retained by a mesh screen with openings of about 0.132 inches. ### Claim 13 (depends on 1) The panel of claim 1 wherein said renewable component includes less than about 5% by weight of particles that are retained by a mesh screen with openings of about 0.022 inches. ### Claim 14 (depends on 1) The panel of claim 1 wherein a bulk density of said renewable component is between 5 and 50 lbs/ft3. ### Claim 15 (depends on 1) A method for manufacture of the panel of claim 1, the method comprising the steps of: forming an aqueous slurry; forming a base mat on a foraminous wire from said aqueous slurry; removing water from said base mat; and finishing said base mat. ### Claim 16 (depends on 15) The method of claim 15 wherein said renewable component comprises rice hulls. ### Claim 17 (depends on 15) The method of claim 15 further comprising sizing said renewable component. ### Claim 18 (depends on 17) The method of claim 17, wherein said sizing step comprises sieving. ### Claim 19 (depends on 18) The method of claim 18 further comprising milling before said sizing step.