# US 2009/0108499 A1 · Method of Recycling Filter Media > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0108499 A1 - Document ID: US20090108499A1 - Status: Published application - Kind: A1 - Application number: 12/258,284 - Filed: 2008-10-24 - Published: 2009-04-30 - Earliest claimed: 2007-10-25 - Inventors: Dan Chrzanowski; Brandon Chrzanowski - Web page: https://patentgrep.com/patent/US20090108499A1 ## CPC - B29B 17/02: Separating plastics from other materials - C08J 11/04: of polymers - B29B 2017/0289: {Washing the materials in liquids} - B29K 2023/12: {PP, i.e. polypropylene} - B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material - B29K 2077/00: Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof}, as moulding material - B29K 2105/065: {containing impurities} - B29L 2031/14: Filters {(optical filters B29L2011/0066, sieves or screens B29L2031/737)} - B29L 2031/737: {Articles provided with holes, e.g. grids, sieves (nets B29L2028/00)} - Y02P 20/143: the feedstock being recycled material, e.g. plastics - Y02W 30/62: Plastics recycling; Rubber recycling - Y10S 264/913: From fiber or filament, or fiber or filament containing article or product, e.g. textile, cloth fabric, carpet, fiberboard - Y10S 264/914: From cellulose containing articles, e.g. paper - Y10S 264/921: by injection molding material recycled from consumer used article or product - B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A method of recycling spent filter media is disclosed. The method can include providing a cloth, the cloth being spent polymer-base filter media, removing foreign solid particles from the cloth, washing the cloth, drying the cloth and processing the dried cloth to produce polymer-base particles that can be used to produce a component. The processing of the dried cloth can include densifying and/or granulating the dried cloth. In addition, the spent cloth can have been used as metal working filtration media and the foreign solid particles removed from the cloth using a brush. In some instances, the cloth is washed using a dry cleaning process and the granulating or densifying of the cloth produces particles that can be used in an injection molding machine. ## Claims ### Claim 1 A method of recycling spent filter media comprising: providing a cloth, the cloth being spent polymer-base filter media; removing foreign solid particles from the cloth; washing the cloth; drying the cloth; and processing the dried cloth to produce polymer-base particles that can be used to produce a component. ### Claim 2 (depends on 1) The method of claim 1, wherein the processing of the dried cloth is selected from the group consisting of densifying and granulating. ### Claim 3 (depends on 1) The method of claim 1, wherein the cloth has been used as metal working filtration media. ### Claim 4 (depends on 1) The method of claim 1, wherein the foreign solid particles are removed from the cloth with a brush. ### Claim 5 (depends on 1) The method of claim 1, wherein the foreign solid particles are removed from the cloth using a squirrel cage. ### Claim 6 (depends on 1) The method of claim 1, wherein the cloth is in the form of a roll of cloth. ### Claim 7 (depends on 6) The method of claim 6, wherein the foreign solid particles are removed from the roll of cloth by unrolling the cloth and passing the cloth past and in contact with a rotating brush. ### Claim 8 (depends on 7) The method of claim 7, wherein the unrolled cloth passes between and in contact with a pair of rotating brushes. ### Claim 9 (depends on 7) The method of claim 7, further including rolling the cloth back into the form of a roll. ### Claim 10 (depends on 9) The method of claim 9, further including cutting the roll of cloth into a plurality of sections, the cutting of the roll of cloth providing a plurality of rectangular shaped sheets of the cloth. ### Claim 11 (depends on 10) The method of claim 10, further including spinning the plurality of rectangular shaped sheets of the cloth in a squirrel cage in order to remove additional foreign solid particles from the cloth. ### Claim 12 (depends on 1) The method of claim 1, wherein the washing the cloth is dry cleaning the cloth. ### Claim 13 (depends on 1) The method of claim 1, wherein the washing the cloth is washing the cloth using soap and water. ### Claim 14 (depends on 13) The method of claim 13, further including bailing the polymer-base particles. ### Claim 15 (depends on 1) A component made from recycled filter media according the method of claim 1. ### Claim 16 A method of making a component out of recycled polymer-base filter media cloth, the method comprising: providing a cloth, the cloth being spent polymer-base filter media; rolling the cloth into a roll; removing foreign solid particles from the roll of cloth by unrolling the roll of cloth and passing the unrolled cloth between a pair of rotating brushes, the brushes mechanical removing the foreign solid particles from the cloth; rolling the cloth that has passed between the pair of rotating brushes back into a roll; cutting the roll of cloth into a plurality of section such a plurality of rectangular sheets of cloth are produced; washing the rectangular sheets of cloth; drying the rectangular sheets of cloth; processing the rectangular sheets of cloth to produce particles and producing particles of polymer, the processing selected from the group consisting of granulating and densifying; providing an injection molding machine; placing the particles of polymer into the injection molding machine; and injection molding the particles of polymer to produce a component. ### Claim 17 (depends on 16) The method of claim 16, wherein the cloth has been used as a metal working filter media. ### Claim 18 (depends on 16) The method of claim 16, further including spinning the rectangular sheets of cloth in a squirrel cage in order to remove additional foreign solid particles from the cloth. ### Claim 19 (depends on 16) The method of claim 16, wherein washing the rectangular sheets of cloth is dry cleaning the rectangular sheets of cloth. ### Claim 20 (depends on 16) The method of claim 16, wherein the component is a dunnage for holding automotive parts. ### Claim 21 (depends on 18) The method of claim 18, wherein the component is a pallet.