# US 7,743,567 B1 · Fiberglass/cellulosic composite and method for molding > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,743,567 B1 - Document ID: US7743567B1 - Status: Granted - Kind: B1 - Application number: 11/625,196 - Filed: 2007-01-19 - Granted: 2010-06-29 - Earliest claimed: 2006-01-20 - Assignees: The Crane Group Companies Limited - Inventors: Bryan K. Buhrts - Web page: https://patentgrep.com/patent/US7743567B1 ## CPC - B29C 45/0013: {using fillers dispersed in the moulding material, e.g. metal particles} - B29C 48/10: flexible, e.g. blown foils - B29C 48/00: Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C49/04) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract A composite material and a related method of manufacturing a component. The composite material may be comprised of plastic material in an amount between about 60% and about 70% by weight, cellulosic material in an amount between about 20% and about 30% by weight, and glass material in an amount up to about 20% by weight. The composite material may be injection molded to form a component. ## Claims ### Claim 1 A method of manufacturing a component, said method comprising: providing a composite comprising: (a) plastic material in an amount between 63% and 67% by weight; (b) cellulosic material in an amount between 20% and 30% by weight; and (c) glass material in an amount between 0.1% and 20% by weight; and injection molding said composite to form said component. ### Claim 2 (depends on 1) The method of claim 1 wherein said plastic material is in an amount of about 65% by weight. ### Claim 3 (depends on 1) The method of claim 1 wherein said plastic material is comprised of polyethylene. ### Claim 4 (depends on 1) The method of claim 1 wherein said cellulosic material is in an amount between 23% and 27% by weight. ### Claim 5 (depends on 1) The method of claim 1 wherein said cellulosic material is in an amount of about 25% by weight. ### Claim 6 (depends on 1) The method of claim 1 wherein said glass material is in an amount between 6% and 14% by weight. ### Claim 7 (depends on 1) The method of claim 1 wherein said glass material is in an amount of about 10% by weight. ### Claim 8 (depends on 1) The method of claim 1 wherein said glass material is comprised of fiberglass. ### Claim 9 (depends on 1) The method of claim 1 wherein said component is a spindle. ### Claim 10 (depends on 1) The method of claim 1 wherein said component is a post cap. ### Claim 11 A method of manufacturing a spindle, said method comprising: providing a composite comprising: (a) polyethylene in an amount between 60% and 70% by weight; (b) cellulosic material in an amount between 20% and 30% by weight; and (c) glass material in an amount between 0.1% and 20% by weight; and injection molding said composite to form said spindle. ### Claim 12 (depends on 11) The method of claim 11 wherein said glass material is comprised of fiberglass. ### Claim 13 A spindle comprised of a composite, said composite comprising: polyethylene in an amount between 60% and 70% by weight; cellulosic material in an amount between 20% and 30% by weight; and glass material in an amount between 0.1% and 20% by weight. ### Claim 14 (depends on 13) The spindle of claim 13 wherein said glass material is comprised of fiberglass. ### Claim 15 A method of manufacturing a component, said method comprising: providing a composite comprising: (a) plastic material in an amount between 60% and 70% by weight; (b) cellulosic material in an amount between 23% and 27% by weight; and (c) glass material in an amount between 0.1% and 20% by weight; and injection molding said composite to form said component. ### Claim 16 (depends on 15) The method of claim 15 wherein said plastic material is comprised of polyethylene. ### Claim 17 (depends on 15) The method of claim 15 wherein said cellulosic material is in an amount of about 25% by weight. ### Claim 18 (depends on 15) The method of claim 15 wherein said glass material is in an amount between 6% and 14% by weight. ### Claim 19 (depends on 15) The method of claim 15 wherein said glass material is in an amount of about 10% by weight. ### Claim 20 (depends on 15) The method of claim 15 wherein said glass material is comprised of fiberglass. ### Claim 21 (depends on 15) The method of claim 15 wherein said component is a spindle. ### Claim 22 (depends on 15) The method of claim 15 wherein said component is a post cap. ### Claim 23 A method of manufacturing a spindle, said method comprising: providing a composite comprising: (a) plastic material in an amount between 60% and 70% by weight; (b) cellulosic material in an amount between 20% and 30% by weight; and (c) glass material in an amount between 0.1% and 20% by weight; and injection molding said composite to form said spindle. ### Claim 24 (depends on 23) The method of claim 23 wherein said plastic material is in an amount between 63% and 67% by weight. ### Claim 25 (depends on 23) The method of claim 23 wherein said plastic material is in an amount of about 65% by weight. ### Claim 26 (depends on 23) The method of claim 23 wherein said cellulosic material is in an amount between 23% and 27% by weight. ### Claim 27 (depends on 23) The method of claim 23 wherein said cellulosic material is in an amount of about 25% by weight. ### Claim 28 (depends on 23) The method of claim 23 wherein said glass material is in an amount between 6% and 14% by weight. ### Claim 29 (depends on 23) The method of claim 23 wherein said glass material is in an amount of about 10% by weight. ### Claim 30 (depends on 23) The method of claim 23 wherein said glass material is comprised of fiberglass. ### Claim 31 (depends on 23) The method of claim 23 wherein said composite comprises: said plastic material in an amount between 63% and 67% by weight; said cellulosic material in an amount between 23% and 27% by weight; and said glass material in an amount between 6% and 14% by weight. ### Claim 32 (depends on 31) The method of claim 31 wherein said plastic material is comprised of polyethylene. ### Claim 33 (depends on 31) The method of claim 31 wherein said glass material is comprised of fiberglass. ### Claim 34 A method of manufacturing a component, said method comprising: providing a composite comprising: (a) plastic material in an amount between 63% and 67% by weight; (b) cellulosic material in an amount between 23% and 27% by weight; and (c) glass material in an amount between 6% and 14% by weight; and injection molding said composite to form said component. ### Claim 35 (depends on 34) The method of claim 34 wherein said plastic material is comprised of polyethylene. ### Claim 36 (depends on 34) The method of claim 34 wherein said glass material is comprised of fiberglass. ### Claim 37 (depends on 34) The method of claim 34 wherein said component is a spindle. ### Claim 38 (depends on 34) The method of claim 34 wherein said component is a post cap. ### Claim 39 (depends on 34) The method of claim 34 wherein said plastic material is in an amount of about 65% by weight. ### Claim 40 (depends on 34) The method of claim 34 wherein said cellulosic material is in an amount of about 25% by weight. ### Claim 41 (depends on 34) The method of claim 34 wherein said glass material is in an amount of about 10% by weight.