DE2424158A1 - Moulded plastics recovery, esp. broken photo-film cassettes - by removing adhesive labels and etiquettes, washing the plastic and drying - Google Patents

Moulded plastics recovery, esp. broken photo-film cassettes - by removing adhesive labels and etiquettes, washing the plastic and drying

Info

Publication number
DE2424158A1
DE2424158A1 DE2424158A DE2424158A DE2424158A1 DE 2424158 A1 DE2424158 A1 DE 2424158A1 DE 2424158 A DE2424158 A DE 2424158A DE 2424158 A DE2424158 A DE 2424158A DE 2424158 A1 DE2424158 A1 DE 2424158A1
Authority
DE
Germany
Prior art keywords
plastics
broken
drying
washing
paper labels
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.)
Granted
Application number
DE2424158A
Other languages
German (de)
Other versions
DE2424158B2 (en
DE2424158C3 (en
Inventor
Carl Dipl Ing Heynemann
Gerd Riedel
Klaus Schiner
Peter Schneller
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Priority to DE19742424158 priority Critical patent/DE2424158C3/en
Priority claimed from DE19742424158 external-priority patent/DE2424158C3/en
Publication of DE2424158A1 publication Critical patent/DE2424158A1/en
Publication of DE2424158B2 publication Critical patent/DE2424158B2/en
Application granted granted Critical
Publication of DE2424158C3 publication Critical patent/DE2424158C3/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
    • B29B17/02—Separating plastics from other materials
    • 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
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/744—Labels, badges, e.g. marker sleeves
    • 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)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Adhesive paper labels or etiquettes are removed from plastics mouldings by breaking the plastics articles to obt. pieces with sharp edges; heating the resulting scrap briefly in a washing drum (dia. above 100 cm) by steam to 100 degrees C; adding highly alkaline washing and wetting agents so that the paper labels are reduced to a pulp and scraped off the sharp edges; rinsing the plastics a broken pieces in water to removed the wetting agent; and drying. Used for recovery of plastics scrap for re-moulding. Process is cheap because the sharp edges of the plastics pieces remove the undesirable paper labels almost automatically. Heating (by steam) ensures that the cleaned plastics waste leaves the washing drum whilst still warm (but not as a melt) so that it dries readily without a separate drying operation.

Description

Verfahren zum Entfernen von Papieretiketten Die Erfindung betrifft ein Verfahren zum Entfernen von auf Kunststoffteilen aufgeklebten Papieretiketten.Method of Removing Paper Labels The invention relates to a method for removing paper labels stuck on plastic parts.

Durch die Rohstoffverknappung ist die Wiederverwendung von Kunststoffteilen, z.B. von Kunststoffkassetten für Filme nach der Belichtung und Entnahme der letzteren wünschenswert geworden. Derartige Kunststoffteile tragen jedoch Papieraufkleber, die vor der Wiederverwendung entfernt werden müssen.Due to the shortage of raw materials, the reuse of plastic parts, e.g. of plastic cassettes for films after exposure and removal of the latter become desirable. Such plastic parts, however, have paper stickers, which must be removed before reuse.

Papieretiketten lassen sich von Kunststoffteilen durch Lösen .1 der meist auf Natur- oder Synthesekatuschuk basierenden Haft-' kleber mit org. Lösungsmitteln entfernen. Nachteilig ist, daß dabei der Kunststoffautelöst wird, daß besondere Sicherheitsvorkehrungen zu treffen sind, daß die Kosten für Lösungsmittel oder deren Aufbereitung hoch sind und daß lange Einwirkzeiten notwendig sind.Paper labels can be removed from plastic parts by loosening .1 the mostly on natural or synthetic rubber based adhesive 'with org. Solvents remove. The disadvantage is that the plastic is released, that special Safety precautions are to be taken that the cost of solvents or their Processing are high and that long exposure times are necessary.

Eine andere Möglichkeit bestünde in der Verwendung wasserlös licher Haftkleber, z.B. Dextrin, wie bei der Flaschenetikettierung. Hier werden jedoch die Etiketten im ganzen abgelöst.Another possibility would be to use water-soluble ones Adhesive, e.g. dextrin, as used in bottle labeling. Here will be however the labels on the whole peeled off.

Beim Waschen der Teile schwimmen dann die abgelösten Etiketten in der Waschflotte zwischen den Teilen und setzen sich in deren hohlräumen fest. Wasserlösliche Haftkleber werden außerdem beispielsweise für Filmkassetten nicht verwendet.When the parts are washed, the detached labels float in the wash liquor between the parts and settle in their cavities. Water soluble Pressure-sensitive adhesives are also not used, for example, for film cassettes.

Um diese Nachteile zu vermeiden, wird erfindungsgemäß ein Verfahren zum Entfernen der Etiketten vorgeschlagen, das dadurch gekennzeichnet ist, daß die Kunststoffteile zur Erzielung scharfer Kanten zerbrochen werden, daß die zerbrochenen Kunststoffteile in einer Trommelwaschmaschine, deren Trommeldurchmesser größer als 100 cm ist,unter direktem Zuführen von Dampf ~ kurzzeitig auf 1000 C erhitzt werden, daß hochalkalische und oberflächenaktive Netzmittelzusätze enthaltende Waschzusäte hinzugefügt werden, so daß die Papieretiketten aufgeschlämmt und infolge der scharfen Kanten abgekartzt werden, daß schließlich die zerbrochenen Kunststoffteile zur Entfernung der Waschzusätze in Wasser spült und anschließend getrocknet werden. Dabei ist es zur Vermeidung des Umfüllens der Teile vorteilhaft, daß die Trocknung nach Wasserablauf durch Schleudern und einep heißen Dampfstoß bewirkt wird.In order to avoid these disadvantages, a method is provided according to the invention proposed for removing the labels, which is characterized in that the Plastic parts are broken to achieve sharp edges that the broken Plastic parts in a drum washing machine with a drum diameter larger than 100 cm, can be briefly heated to 1000 C with direct supply of steam ~, that detergent additives containing highly alkaline and surface-active wetting agent additives be added so that the paper labels are slurried and as a result of the sharp Edges are peeled off, that eventually the broken plastic pieces for removal the detergents are rinsed in water and then dried. It is there to avoid the transferring of the parts, it is advantageous that drying takes place after the water has run off is effected by spinning and a burst of hot steam.

An die Stelle eines Ablösungsprozeßes tritt also ein- Zerkleinerungs- und Aufschlämmprozeß. Dieses Verfahren ist nicht nur einfacher, sondern vor allem auch zeitsparend.Instead of a detachment process, there is a comminution and slurry process. This procedure is not only easier, but most importantly also time-saving.

Im folgenden wird nun das erfindungsgemäße Verfahren im einzelnen erläutert.The method according to the invention will now be described in detail below explained.

Hiernach ist vorgesehen, daß die Kunststoffteile von denen die Papieretiketten entfernt werden sollen, möglicht stark zerbrochen oder aufgebrochen werden, um viele scharfe Bruchkanten zu erzeugen, die auf die zu entfernenden Etiketten eine Kratz- oder Schabwirkung während des folgenden Waschvorgangs ausüben.According to this it is provided that the plastic parts of which the paper labels should be removed, broken as badly as possible or broken open to many to create sharp break edges that leave a scratch on the labels to be removed or exert scraping action during the following wash.

Zum Aufschlämmen wird eine Trommelwaschmaschine verwendet, deren Trommeldurchmesser äus Gründen der Wirtschaftlichkeit nicht kleiner als 100 cm sein sollte.A drum washing machine is used for slurrying, the drum diameter of which is For reasons of economy, it should not be smaller than 100 cm.

In diese Trommelwaschmaschine werden die zerbrochenen Kunststoffteile samt den ihnen noch anhaftenden Etiketten gegeben. Dann wird die Waschflotte kurzzeitig und sehr rasch auf 1000 C erhitzt und zwar durch direktes Einführen von Dampf.The broken plastic parts are put into this drum washing machine together with the labels still attached to them. Then the wash liquor is briefly and heated very quickly to 1000 C by direct introduction of steam.

Außerdem werden Waschzusätze, die hochalkalisch sind und die außerdem durch Netzmittelzusätze oberflächenaktiv sind, hinzugefügt. Beim nun folgenden Waschvorgang werden die zu entfernenden Papieretiketten aufgeschlämmt und durch die scharfen Kanten der zerbrochenen Kunststoffteile samt dem vorhandenen Klebstoff abgeschabt bzw. abgekratzt.In addition, there are detergent additives that are highly alkaline and that as well are surface-active due to the addition of wetting agents. With the following washing process the paper labels to be removed are slurried and cut through the sharp ones The edges of the broken plastic parts and the existing adhesive scraped off or scraped off.

Durch Spülen mit Wasser werden nach dem Aufschlämmen die am Kunststoff haftenden Waschzusätze entfernt, die bei längerer Einwirkzeit das Kunststoffmaterial schädigen würden, und die Papierrückstände entfernt.By rinsing with water after slurrying, the plastic Removes adhesive detergents that remove the plastic material after a longer exposure time would damage and remove the paper residue.

Feuchtigkeit würde bei der späteren Spritzgußverarbeitung aes Kunststoffes zu verschiedenen Materialschädigungen führen.Moisture would become aes plastic during the later injection molding processing lead to various material damages.

Das Polystyrol enthält nach dem Waschen zwar nur geringe Mengen Wasser, doch führt das Waschen zur Wasseraufnahme durch die den Kassetten anhaftenden Klebstoffreste. Diese Wasseraufnahme ist durch Trocknen rückgängig zu machen. Um das Umfüllen des Materials in ein Trockengerät zu vermeiden, wird es nacgh Wasserablauf geschleudert und anschließend durch einen Dampfstoß nochmals erhitzt. Das Material wird dabei soweit erhitzt, daß es schon weich wird, jedoch noch nicht verklebt. Dadurch wird erreicht, daß während des Entladevorganges das Material noch so warm ist, daß es ausreichende Mengen Wasser an die Luft abgibt. Das weitere Zerkleinern kann dann unmittelbar' anschließend erfolgen; ein separater Trockenprozeß wird vermieden.The polystyrene contains only small amounts of water after washing, however, the washing leads to water absorption by the adhesive residues adhering to the cassettes. This water absorption can be reversed by drying. To refill the To avoid material in a drying device, it is thrown after the water drainage and then heated again with a burst of steam. The material will be there Heated to the point that it is already soft, but not yet stuck together. This will achieved that the material is still so warm that it is during the unloading process releases sufficient amounts of water into the air. Further shredding can then take place immediately afterwards; a separate drying process is avoided.

Claims (2)

AnsprücheExpectations y)1;Verfahren zum Entfernen von auf Kunststoffteilen aufgeklebten Papieretiketten, dadurch gekennzeichnet, daß die Kunststoffteile zur Erzielung scharfer Kanten zerbrochen.y) 1; Procedure for removing stuck on plastic parts Paper labels, characterized in that the plastic parts to achieve sharp Broken edges. werden, daß die zerbrochenen Kunststoffteile in einer Trommelwaschmaschine, deren Trommeldurchmesser größer als 100 cm ist unter direktem Zuführen von Dampf kurzzeitig auf 100 C erhitzt werden, daß hochalkalische und oberflächenaktive Netzmittelzusätze enthaltende Waschzusätze hinzugefügt werden, so daß die Papieretiketten aufgeschlämmt und infolge der scharfen Kanten abgekratzt werden, daß schließlich die zerbrochenen Kunststoffteile zur Entfernung der Waschzusätze in Wasser gespült und anschließend getrocknet werden. that the broken plastic parts in a drum washing machine, whose drum diameter is greater than 100 cm with direct supply of steam briefly heated to 100 C, that highly alkaline and surface-active wetting agent additives containing washing additives are added so that the paper labels are slurried and as a result of the sharp edges being scraped off, eventually the broken ones Plastic parts rinsed in water to remove the detergent additives and then rinsed to be dried. 2. Verfahren nach Anspruch 1, dadurch Aekennzeichnet, daß die Trocknung nach Wasserablauf durch Schleudern und einen heißen Dampfstoß bewirkt wird.2. The method according to claim 1, characterized in that the drying after the water has run off is effected by spinning and a burst of hot steam.
DE19742424158 1974-05-17 Procedure for removing stuck paper labels Expired DE2424158C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742424158 DE2424158C3 (en) 1974-05-17 Procedure for removing stuck paper labels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742424158 DE2424158C3 (en) 1974-05-17 Procedure for removing stuck paper labels

Publications (3)

Publication Number Publication Date
DE2424158A1 true DE2424158A1 (en) 1975-11-27
DE2424158B2 DE2424158B2 (en) 1977-04-07
DE2424158C3 DE2424158C3 (en) 1977-11-17

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062957A1 (en) * 1981-04-10 1982-10-20 Stamicarbon B.V. Method of treating plastics material parts from household refuse
DE4343539A1 (en) * 1993-12-14 1995-06-22 Kurt Bunk Sepn of contaminants from plastics prods and process plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062957A1 (en) * 1981-04-10 1982-10-20 Stamicarbon B.V. Method of treating plastics material parts from household refuse
DE4343539A1 (en) * 1993-12-14 1995-06-22 Kurt Bunk Sepn of contaminants from plastics prods and process plant

Also Published As

Publication number Publication date
DE2424158B2 (en) 1977-04-07

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee