DE10202368A1 - Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency - Google Patents

Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency

Info

Publication number
DE10202368A1
DE10202368A1 DE2002102368 DE10202368A DE10202368A1 DE 10202368 A1 DE10202368 A1 DE 10202368A1 DE 2002102368 DE2002102368 DE 2002102368 DE 10202368 A DE10202368 A DE 10202368A DE 10202368 A1 DE10202368 A1 DE 10202368A1
Authority
DE
Germany
Prior art keywords
foam
hot air
volume
contact
components
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.)
Ceased
Application number
DE2002102368
Other languages
German (de)
Inventor
Alfred Linden
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE2001163091 external-priority patent/DE10163091A1/en
Application filed by Individual filed Critical Individual
Priority to DE2002102368 priority Critical patent/DE10202368A1/en
Publication of DE10202368A1 publication Critical patent/DE10202368A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • H05B3/0057—Heating devices using lamps for industrial applications for plastic handling and treatment
    • 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
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/046—Extruder as pressing tool with calibrated die openings for forming and disintegrating pasty or melted material
    • 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
    • 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
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/032—Heaters specially adapted for heating by radiation heating
    • 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

Abstract

To recycle a thermoplastic foam, using a kneading, fulling or extruder machine, the components in contact with the foam are alternatively or additionally subjected to hot air to reduce the foam volume. The specification is an addition to 10163091.3.

Description

Die in Patent-Anmeldung 101 63 091.3 beschriebenen Verfahren und Vorrichtungen werden hier aufgegriffen und dadurch modifiziert, dass im Wesentlichen heiße Luft als wärmeübertragendes Medium zur Erwärmung der beweglichen Teile einer Knet-, Walk- oder Extrudervorrichtung und gleichzeitig der zu verarbeitenden Schaumteile benutzt wird. The methods and devices described in patent application 101 63 091.3 are taken up here and modified in that essentially hot air as a heat transfer medium for heating the moving parts of a kneading, milling or extruder device and at the same time the foam parts to be processed is used.

Eine zusätzliche Beheizung der Vorrichtung von außen beschleunigt den Prozess insbesondere in der Phase des Anfahrens. Additional heating of the device from the outside speeds up the process, particularly in the phase of Start-up.

Alternativ oder zusätzlich kann auch eine in der Knet-, Walk- oder Extrudervorrichtung arbeitende Schnecke von einer innenliegenden Heizquelle erwärmt werden. As an alternative or in addition, a screw working in the kneading, milling or extrusion device can also be of one internal heat source to be heated.

Auch kann eine zusätzliche Heizung durch IR-Strahlung sehr zweckmäßig sein. Additional heating by IR radiation can also be very useful.

Es ist vorgesehen, das Schaummaterial in möglichst kleine und möglichst gleich dimensionierte Stücke zu zerkleinern, damit alle Stücke weitgehend gleich große Oberflächen aufweisen und damit der Wärmeeinwirkung der heißen Luft oder der warmen Vorrichtung gleich wirksam ausgesetzt werden. Dadurch wird eine gleichmäßige Erwärmung und damit Volumen-Reduzierung erzielt und das Material gleichzeitig und gleichmäßig zum Schmelzen und zur Verflüssigung gebracht. It is envisaged that the foam material will be cut into pieces that are as small as possible and of the same size shred, so that all pieces have largely the same size surfaces and thus the heat of the exposed to hot air or the warm device with equal effectiveness. This will make it even Heating and thus volume reduction achieved and the material melted simultaneously and evenly and liquefied.

Vorteilhaft für das Erzielen einer guten Qualität des Endproduktes ist eine schonende, d. h. langsame, auf alle Teile gleichmäßig einwirkende Erwärmung des Schaummaterials. Dazu wird eine möglichst niedrige Wirktemperatur angestrebt, die über große Teilchen-Oberflächen auf jedes Teilchen gleichmäßig vermittelt wird und zwar bis zum Verflüssigen des Materials. Advantageous for achieving a good quality of the end product is a gentle, i.e. H. slow on all parts evenly acting heating of the foam material. For this, the lowest possible effective temperature strived for, which is evenly conveyed to each particle over large particle surfaces, namely up to Liquify the material.

Das verflüssigte Material kann in noch heißem Zustand in ein Wasserbad fallen und sich dort verfestigen, damit es, wie in Patent-Anmeldung 101 63 091.3 beschrieben, in einem Entgasungs-Extruder - in der Regel zu Granulat - weiterverarbeitet wird zur Wiederverwendung. The liquefied material can fall into a water bath while it is still hot and solidify there so that it as described in patent application 101 63 091.3, in a degassing extruder - generally to granules - is processed for reuse.

Claims (7)

1. Vorrichtung und Verfahren zur stofflichen Wiederverwertung thermoplastischen Schaums, insbesondere Styropor gemäß einem oder mehreren der Ansprüche 5, 7 oder 8 der Patentanmeldung 101 63 091.3, dadurch gekennzeichnet, dass er einer Knet-, Walk- oder Extrudervorrichtung zugeführt wird, in der das Schaummaterial, alternativ oder zusätzlich auch die den Schaum berührenden Teile der Vorrichtung so mit Heißluft beaufschlagt werden, dass der Schaum volumen-reduziert wird. 1. Device and method for material recycling of thermoplastic foam, in particular polystyrene according to one or more of claims 5, 7 or 8 of patent application 101 63 091.3, characterized in that it is fed to a kneading, milling or extruder device in which the foam material , alternatively or additionally, the parts of the device which contact the foam are subjected to hot air in such a way that the foam is reduced in volume. 2. Vorrichtung und Verfahren nach dem vorherigen Anspruch, gekennzeichnet dadurch, dass die Knet-, Walk- oder Extrudervorrichtung beheizt ist. 2. Device and method according to the preceding claim, characterized in that the Kneading, milling or extruder device is heated. 3. Vorrichtung und Verfahren nach einem vorherigen Ansprüche, dadurch gekennzeichnet, dass eine in der Vorrichtung arbeitende Schnecke eine innenliegende Heizung hat. 3. Device and method according to one of the preceding claims, characterized in that a the device working screw has an internal heater. 4. Vorrichtung und Verfahren zur stofflichen Wiederverwertung thermoplastischem Schaum, insbesondere Styropor gemäß einem oder mehreren der Ansprüche 5, 7 oder 8 der Patentanmeldung 101 63 091.3, dadurch gekennzeichnet, dass das Schaummaterial vor der Bearbeitung in weitgehend gleichmäßig dimensionierte Stücke zerkleinert wird. 4. Device and method for material recycling of thermoplastic foam, in particular styrofoam according to one or more of claims 5, 7 or 8 of patent application 101 63 091.3, characterized in that the foam material is dimensioned in largely uniform before processing Pieces is crushed. 5. Vorrichtung und Verfahren nach einem vorherigen Ansprüche, gekennzeichnet dadurch, dass die zerkleinerten Teile aus Schaummaterial bis zum Schmelzpunkt bzw. in den Schmelzbereich erwärmt und verflüssigt werden. 5. Device and method according to one of the preceding claims, characterized in that the shredded parts made of foam material heated up to the melting point or in the melting range and be liquefied. 6. Vorrichtung und Verfahren gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass zusätzlich eine Erwärmung durch IR-Strahlung erfolgt. 6. The device and method according to any one of the preceding claims, characterized in that in addition, heating by IR radiation takes place. 7. Vorrichtung und Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Abkühlen der volumenreduzierten Schaum-Teile in einem Wasserbad erfolgt, in das sie hineinfallen. 7. The device and method according to any one of the preceding claims, characterized in that the The reduced-volume foam parts are cooled in a water bath into which they fall.
DE2002102368 2001-12-20 2002-01-23 Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency Ceased DE10202368A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2002102368 DE10202368A1 (en) 2001-12-20 2002-01-23 Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001163091 DE10163091A1 (en) 2001-12-20 2001-12-20 Recycling unit for plastic foam, especially polystyrene, comprises heated plates or rollers, a melt region, a warm air tunnel and an extruder
DE2002102368 DE10202368A1 (en) 2001-12-20 2002-01-23 Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency

Publications (1)

Publication Number Publication Date
DE10202368A1 true DE10202368A1 (en) 2003-10-02

Family

ID=27806064

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2002102368 Ceased DE10202368A1 (en) 2001-12-20 2002-01-23 Recycling thermoplastic foam materials uses hot air at the components in contact with the foam, to reduce the foam volume to be brought to an even liquid consistency

Country Status (1)

Country Link
DE (1) DE10202368A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT342958B (en) * 1976-07-12 1978-05-10 Matth Salzer S Sohne Aktienges DEVICE FOR REGRANULATING LOW DENSITY THERMOPLASTIC WASTE
JPS62240515A (en) * 1986-04-14 1987-10-21 Susumu Akamatsu Device for regenerating waste plastic
DE19502352A1 (en) * 1995-01-26 1996-08-08 Urban Dipl Ing Stricker Devices for carrying out relaxation for bulk materials containing stretched thermoplastics and for selectively softening thermoplastics in the batch flow for recycling purposes
DE19904227A1 (en) * 1999-02-03 2000-08-10 Rainer Anderlik Extruder for recycling thermoplastic foam particles includes a screw with finer pitch towards the exit made by twisting a tapered metal strip

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT342958B (en) * 1976-07-12 1978-05-10 Matth Salzer S Sohne Aktienges DEVICE FOR REGRANULATING LOW DENSITY THERMOPLASTIC WASTE
JPS62240515A (en) * 1986-04-14 1987-10-21 Susumu Akamatsu Device for regenerating waste plastic
DE19502352A1 (en) * 1995-01-26 1996-08-08 Urban Dipl Ing Stricker Devices for carrying out relaxation for bulk materials containing stretched thermoplastics and for selectively softening thermoplastics in the batch flow for recycling purposes
DE19904227A1 (en) * 1999-02-03 2000-08-10 Rainer Anderlik Extruder for recycling thermoplastic foam particles includes a screw with finer pitch towards the exit made by twisting a tapered metal strip

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