DE21723186T1 - PROCESS FOR MAKING A LABEL PAPER FROM DETACHED WET LABELS - Google Patents

PROCESS FOR MAKING A LABEL PAPER FROM DETACHED WET LABELS Download PDF

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Publication number
DE21723186T1
DE21723186T1 DE21723186.9T DE21723186T DE21723186T1 DE 21723186 T1 DE21723186 T1 DE 21723186T1 DE 21723186 T DE21723186 T DE 21723186T DE 21723186 T1 DE21723186 T1 DE 21723186T1
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DE
Germany
Prior art keywords
waste paper
proportion
weight
suspension
procedure
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.)
Pending
Application number
DE21723186.9T
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German (de)
Inventor
Michael Moser
Stefan EITZE
Marta BAGINSKI
Enrico KARALLUS
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.)
Kuebler & Niethammer Papierfabrik Kriebstein Ag
Original Assignee
Kuebler & Niethammer Papierfabrik Kriebstein 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 Kuebler & Niethammer Papierfabrik Kriebstein Ag filed Critical Kuebler & Niethammer Papierfabrik Kriebstein Ag
Publication of DE21723186T1 publication Critical patent/DE21723186T1/en
Pending legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02Working-up waste paper
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/04Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30Defibrating by other means
    • D21B1/32Defibrating by other means of waste paper
    • D21B1/325Defibrating by other means of waste paper de-inking devices
    • D21B1/327Defibrating by other means of waste paper de-inking devices using flotation devices
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02Working-up waste paper
    • D21C5/025De-inking
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/64Paper recycling

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Verfahren zur Altpapieraufbereitung umfassend mindestens einen ersten Flotationsschritt zur Entfernung von Druckfarben aus einer Altpapierstoffsuspension dadurch gekennzeichnet, dass in einem Verfahrensschritt vor der dem mindestens einen Flotationsschritt durch Zugabe eines Säuerungsmittels der pH-Wert der Altpapierstoffsuspension auf einen Wert zwischen 8,0 und 9,3, vorzugsweise zwischen 8,2 und 9,0 und besonders vorzugsweise zwischen 8,3 und 8,8 und höchst vorzugweise zwischen 8,4 und 8,6 eingestellt wird.Process for processing waste paper, comprising at least one first flotation step for removing printing inks from a waste paper suspension, characterized in that in a process step before the at least one flotation step, the pH value of the waste paper suspension is adjusted to a value between 8.0 and 9.3 by adding an acidifying agent, preferably between 8.2 and 9.0 and more preferably between 8.3 and 8.8 and most preferably between 8.4 and 8.6.

Claims (12)

Verfahren zur Altpapieraufbereitung umfassend mindestens einen ersten Flotationsschritt zur Entfernung von Druckfarben aus einer Altpapierstoffsuspension dadurch gekennzeichnet, dass in einem Verfahrensschritt vor der dem mindestens einen Flotationsschritt durch Zugabe eines Säuerungsmittels der pH-Wert der Altpapierstoffsuspension auf einen Wert zwischen 8,0 und 9,3, vorzugsweise zwischen 8,2 und 9,0 und besonders vorzugsweise zwischen 8,3 und 8,8 und höchst vorzugweise zwischen 8,4 und 8,6 eingestellt wird.Process for processing waste paper, comprising at least one first flotation step for removing printing inks from a waste paper suspension, characterized in that in a process step before the at least one flotation step, the pH value of the waste paper suspension is adjusted to a value between 8.0 and 9.3 by adding an acidifying agent, preferably between 8.2 and 9.0 and more preferably between 8.3 and 8.8 and most preferably between 8.4 and 8.6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass in einem Verfahrensschritt vor der dem mindestens einen Flotationsschritt die Altpapierstoffsuspension auf eine Stoffdichte zwischen 0,5% und 1,5%, vorzugsweise 0,8% und 1,2%, und besonders bevorzugt um 1% eingestellt wird.procedure after claim 1 , characterized in that in a process step before the at least one flotation step, the waste paper stock suspension is adjusted to a consistency between 0.5% and 1.5%, preferably 0.8% and 1.2%, and particularly preferably around 1%. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Säuerungsmittels Aluminiumsulfat ist.procedure after claim 1 or 2 , characterized in that the acidulant is aluminum sulfate. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Aluminiumsulfat der Altpapierstoffsuspension in wässeriger Lösung zugegeben wird.procedure after claim 1 , 2 or 3 , characterized in that the aluminum sulphate is added to the waste paper stock suspension in an aqueous solution. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das die Altpapierstoffsuspension zwischen 1% und 100% Altpapier der Sorte 5.05.00 nach DIN EN 643 enthält.Method according to one of the preceding claims, characterized in that the waste paper stock suspension contains between 1% and 100% waste paper of type 5.05.00 according to DIN EN 643. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass bei einer Altpapierstoffsuspension von weniger als 100% Altpapier der Sorte 5.05.00 nach DIN EN 643 der verbleibende Anteil Altpapier der Sorte 1.11 nach DIN EN 643 enthält.procedure after claim 5 , characterized in that with a waste paper stock suspension of less than 100% waste paper of type 5.05.00 according to DIN EN 643, the remaining portion contains waste paper of type 1.11 according to DIN EN 643. Verfahren nach einem nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet dass bezogen auf den Gewichtsanteil des gesamten Altpapierstoffanteils die Altpapiersuspension bis zu 0,5% Natronlauge enthält.Method according to one of the preceding claims, characterized in that the waste paper suspension contains up to 0.5% caustic soda, based on the proportion by weight of the entire proportion of waste paper. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet dass bezogen auf den Gewichtsanteil des gesamten Altpapierstoffanteils die Altpapiersuspension bis zu 0,75% Gewichtsanteile 49,5% Wasserstoffsuperoxid enthält.Method according to one of the preceding claims, characterized in that the waste paper suspension contains up to 0.75% by weight of 49.5% hydrogen peroxide, based on the proportion by weight of the entire proportion of waste paper. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet dass bezogen auf den Gewichtsanteil des gesamten Altpapierstoffanteils die Altpapiersuspension bis zu 0,75% Gewichtsanteile Wasserglas enthält.Method according to one of the preceding claims, characterized in that the waste paper suspension contains up to 0.75% by weight of water glass, based on the proportion by weight of the entire proportion of waste paper. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet dass bezogen auf den Gewichtsanteil des gesamten Altpapierstoffanteils die Altpapiersuspension bis zu 0,375% Gewichtsanteile Fettsäure enthält.Method according to one of the preceding claims, characterized in that the waste paper suspension contains up to 0.375% by weight of fatty acid, based on the proportion by weight of the entire proportion of waste paper. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Probe der Altpapiersorte 5.05.00 nach DIN EN 643 in einem Laborpulper getestet wird, und nur wenn die Probe in weniger als einer vorgegebenen Zeitspanne aufgelöst wurde, die Altpapiersorte in die Altpapieraufbereitung übernommen wird.Method according to one of the preceding claims, characterized in that a sample of waste paper type 5.05.00 according to DIN EN 643 is tested in a laboratory pulper and only if the sample has been dissolved in less than a predetermined period of time is the waste paper type taken over for waste paper processing. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass in dem Laborpulper die Stoffdichte vorzugsweise 10 %, der pH-Wert vorzugsweise 10,5, die Temperatur vorzugsweise zwischen 45°C bis 50 °C, und die Drehzahl vorzugsweise um 1345 min-1 beträgt.procedure after claim 11 , characterized in that in the laboratory pulper the consistency is preferably 10%, the pH is preferably 10.5, the temperature is preferably between 45° C. and 50° C., and the speed is preferably around 1345 min -1 .
DE21723186.9T 2020-04-29 2021-04-29 PROCESS FOR MAKING A LABEL PAPER FROM DETACHED WET LABELS Pending DE21723186T1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020111675.6A DE102020111675A1 (en) 2020-04-29 2020-04-29 Process for producing a label paper from detached wet labels
DE102020111675 2020-04-29
PCT/EP2021/061242 WO2021219776A1 (en) 2020-04-29 2021-04-29 Method for producing label paper from detached wet labels
EP21723186.9A EP4143380A1 (en) 2020-04-29 2021-04-29 Method for producing label paper from detached wet labels

Publications (1)

Publication Number Publication Date
DE21723186T1 true DE21723186T1 (en) 2023-05-11

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Family Applications (2)

Application Number Title Priority Date Filing Date
DE102020111675.6A Pending DE102020111675A1 (en) 2020-04-29 2020-04-29 Process for producing a label paper from detached wet labels
DE21723186.9T Pending DE21723186T1 (en) 2020-04-29 2021-04-29 PROCESS FOR MAKING A LABEL PAPER FROM DETACHED WET LABELS

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE102020111675.6A Pending DE102020111675A1 (en) 2020-04-29 2020-04-29 Process for producing a label paper from detached wet labels

Country Status (3)

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EP (1) EP4143380A1 (en)
DE (2) DE102020111675A1 (en)
WO (1) WO2021219776A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311674C3 (en) * 1973-03-09 1978-01-19 Degussa PROCESS FOR REGENERATING WASTE PAPER
DE2947862C2 (en) * 1979-11-28 1982-04-01 J.M. Voith Gmbh, 7920 Heidenheim Process and plant for the production of a pulp suspension from waste paper
DE3309956C1 (en) * 1983-03-19 1984-07-12 Degussa Ag, 6000 Frankfurt Process for bleaching paper raw materials
DE3616816A1 (en) * 1986-05-17 1987-11-19 Degussa METHOD FOR REMOVING BULK COLORED PAPER AND SELF-COPYING PAPER
DE3723502A1 (en) * 1987-07-16 1989-01-26 Henkel Kgaa METHOD FOR FLOTATION OF FILLERS FROM WASTE PAPER
DE3831668A1 (en) * 1988-09-17 1990-03-22 Escher Wyss Gmbh METHOD FOR INCREASING WHITE GRADE OF WASTE PAPER WITH NEUTRAL WATER CIRCUIT
CH687209A5 (en) * 1993-12-07 1996-10-15 Utzenstorf Papierfabrik Ag A method for treating waste paper for paper production.
DE10254862A1 (en) * 2002-11-25 2004-06-03 Degussa Ag Process for decolourization of printing ink from waste paper by flotation thinking
FI20055234L (en) * 2005-05-18 2006-11-19 Linde Ag A method for cleaning recycled fibers and the use of acid in cleaning
DE102008028003A1 (en) 2008-06-12 2009-12-24 Meri Entsorgungstechnik für die Papierindustrie GmbH Process for continuous cleaning of process water in the paper industry, comprises contacting the process water to be cleaned in an anaerobic reactor with anaerobic microorganisms in order to reduce impurities in waste water
BR112013019042A2 (en) 2011-01-25 2018-07-10 Basf Se process to produce a semipaste for the production of paper products, and use of methanesulfonic acid.
DE102011016838A1 (en) 2011-04-12 2012-10-18 Voith Patent Gmbh Process for treating liquids and dispersions with metal ions produced electrolytically using a two-chamber electrolysis cell

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EP4143380A1 (en) 2023-03-08
DE102020111675A1 (en) 2021-11-04
WO2021219776A1 (en) 2021-11-04

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