GB1082875A - Re-using scrap foamed thermoplastic polymers - Google Patents

Re-using scrap foamed thermoplastic polymers

Info

Publication number
GB1082875A
GB1082875A GB920265A GB920265A GB1082875A GB 1082875 A GB1082875 A GB 1082875A GB 920265 A GB920265 A GB 920265A GB 920265 A GB920265 A GB 920265A GB 1082875 A GB1082875 A GB 1082875A
Authority
GB
United Kingdom
Prior art keywords
unfoamed
scrap
solid
polymers
foaming agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB920265A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haveg Industries Inc
Original Assignee
Haveg Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haveg Industries Inc filed Critical Haveg Industries Inc
Publication of GB1082875A publication Critical patent/GB1082875A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0036—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting of large particles, e.g. beads, granules, pellets, flakes, slices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B29K2025/04—Polymers of styrene
    • B29K2025/06—PS, i.e. polystyrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Re-using scrap foamed thermoplastic polymer by hot-extruding the previously ground-up scrap as an unfoamed solid containing a foaming agent and quench chilling the solid throughout preferably in a liquid bath such as a water bath. The scrap polymer preferably contains a volatile foaming agent. An optional feature of the invention involves incorporating virgin unfoamed expansible thermoplastic polymer and/or a small amount of make-up foaming agent in the scrap prior to extruding the unfoamed solid as above. The unfoamed extrudate may be in the form of a rod or sheet and is preferably conminuted before being mixed, if desired, with additional volatile liquid foaming agent and passed through a second extruder to form foamed articles such as sheets or tubes with or without unfoamed surface skins. The preferred thermoplastic polymers are polymers of mono-olefines having 2-4 carbon atoms, vinyl chloride resins or styrene resins particularly crystal grade or specified high impact polystyrenes and mixtures thereof normally containing 5 to 95% of crystal grade polystyrene. Other polymers which can be used are cellulose ethers or esters, homo-polymers and interpolymers of monomeric compounds containing the CH2 = C< grouping such as olefines, polyfluoroalkenes, vinyl halides, vinyl ethers, vinyl esters of carboxylic acids, derivatives of acrylic acid and interpolymers of the above monomers with a ,b -unsaturated polycarboxylic acids and derivatives thereof. Polycarbonates, polyoxymethylene, oxymethylene-alkylene oxide copolymers, polyurethanes, polyethylene terephthalates, nylon, A.B.S. terpolymers, chlorinated rubber, bituminous materials and paraffin waxes are also mentioned. The preferred additional foaming agents are volatile liquids such as hydrocarbons, halogenohydrocarbons, alcohols, ethers, esters, ketones or aldehydes normally contained in a solid absorbent such as silica gel, diatomaceous earth, activated alumina or carbon, molecular sieves or a swollen polymer. Conventional nucleating agents which liberate carbon dioxide and solid foaming agents which decompose to form a gas are also specified.
GB920265A 1964-03-31 1965-03-04 Re-using scrap foamed thermoplastic polymers Expired GB1082875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35612064A 1964-03-31 1964-03-31

Publications (1)

Publication Number Publication Date
GB1082875A true GB1082875A (en) 1967-09-13

Family

ID=23400209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB920265A Expired GB1082875A (en) 1964-03-31 1965-03-04 Re-using scrap foamed thermoplastic polymers

Country Status (2)

Country Link
DE (1) DE1569024A1 (en)
GB (1) GB1082875A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327866A1 (en) * 1983-08-02 1985-02-14 Erich 8151 Neukolbing Weichenrieder sen. Process and device for reclaiming wastes, in particular dust, from expanded polystyrene
WO1993022119A1 (en) * 1992-04-30 1993-11-11 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Process and device for recycling blown plastics
EP0676270A1 (en) * 1994-03-30 1995-10-11 Rieter Automatik GmbH Method and apparatus for the production of a foaming resin
WO1997047450A1 (en) * 1996-06-12 1997-12-18 Ecobuild International Limited Solid materials and method for manufacturing the same
EP2918388A1 (en) * 2014-03-10 2015-09-16 Sulzer Chemtech AG A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9109781U1 (en) * 1991-08-07 1991-12-05 Fischer Recycling GmbH u. Co KG, 7980 Ravensburg Device for melting used rigid polystyrene foams
JP5165991B2 (en) 2006-11-23 2013-03-21 スルザー ケムテック アクチェンゲゼルシャフト Method and plant for producing polymer particles

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327866A1 (en) * 1983-08-02 1985-02-14 Erich 8151 Neukolbing Weichenrieder sen. Process and device for reclaiming wastes, in particular dust, from expanded polystyrene
WO1993022119A1 (en) * 1992-04-30 1993-11-11 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Process and device for recycling blown plastics
EP0676270A1 (en) * 1994-03-30 1995-10-11 Rieter Automatik GmbH Method and apparatus for the production of a foaming resin
US5672304A (en) * 1994-03-30 1997-09-30 Rieter Automatik Gmbh Method for manufacturing a foamable synthetic material from shredded foam
WO1997047450A1 (en) * 1996-06-12 1997-12-18 Ecobuild International Limited Solid materials and method for manufacturing the same
EP2918388A1 (en) * 2014-03-10 2015-09-16 Sulzer Chemtech AG A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
WO2015135604A1 (en) * 2014-03-10 2015-09-17 Sulzer Chemtech Ag A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
CN106061702A (en) * 2014-03-10 2016-10-26 苏舍化学技术有限公司 A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
US20160375616A1 (en) * 2014-03-10 2016-12-29 Sulzer Chemtech Ag A Process to Recycle Expandable Plastic Materials and an Expandable or Expanded Plastic Material Obtainable Thereby
JP2017511400A (en) * 2014-03-10 2017-04-20 スルザー ケムテック アクチェンゲゼルシャフト Process for recycling foamable plastic material and foamable plastic material or foamable plastic material obtainable thereby
RU2671722C2 (en) * 2014-03-10 2018-11-06 Зульцер Хемтех Аг Process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
JP2019147958A (en) * 2014-03-10 2019-09-05 スルザー ケムテック アクチェンゲゼルシャフト Process of recycling expandable plastic materials and expandable or expanded plastic material obtainable thereby
TWI683738B (en) * 2014-03-10 2020-02-01 瑞士商素路彩化學股份有限公司 A process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
US11000979B2 (en) * 2014-03-10 2021-05-11 Sulzer Management Ag Process to recycle expandable plastic materials and an expandable or expanded plastic material obtainable thereby
CN114770807A (en) * 2014-03-10 2022-07-22 苏尔寿管理有限公司 Process for recycling expandable plastic material and expandable plastic material or expanded plastic material obtainable thereby

Also Published As

Publication number Publication date
DE1569024A1 (en) 1969-09-11

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