DE690459C - Process for cleaning printing paper from printing ink - Google Patents

Process for cleaning printing paper from printing ink

Info

Publication number
DE690459C
DE690459C DE1937R0099963 DER0099963D DE690459C DE 690459 C DE690459 C DE 690459C DE 1937R0099963 DE1937R0099963 DE 1937R0099963 DE R0099963 D DER0099963 D DE R0099963D DE 690459 C DE690459 C DE 690459C
Authority
DE
Germany
Prior art keywords
paper
printing
cleaning
printing ink
ink
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
DE1937R0099963
Other languages
German (de)
Inventor
Dr Berthold Rassow
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.)
BERTHOLD RASSOW DR
Edgar Herfurth Dr H C
Original Assignee
BERTHOLD RASSOW DR
Edgar Herfurth Dr H C
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 BERTHOLD RASSOW DR, Edgar Herfurth Dr H C filed Critical BERTHOLD RASSOW DR
Priority to DE1937R0099963 priority Critical patent/DE690459C/en
Application granted granted Critical
Publication of DE690459C publication Critical patent/DE690459C/en
Expired legal-status Critical Current

Links

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
    • D21C5/025De-inking
    • D21C5/027Chemicals therefor
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Detergent Compositions (AREA)

Description

Verfahren zur Reinigung des .Druckpapiers von Druckerschwärze Die Erfindung betrifft ein Verfahren zum Entfernen der Druckerschwärze von bedruckten Papieren, -sie bezweckt, ein Verfahren zu schaffen, das einfacher, besser ,und preiswerter ist als andere bekannte Verfahren.Procedure for cleaning printing paper from printing ink The The invention relates to a method for removing printing ink from printed matter Papers, the purpose of which is to create a process that is simpler, better, and cheaper is than other known procedures.

Diese Verfahren haben alle den Zweck, die Druckerschwärze aus bedruckten Papieren zu entfernen, damit diese für neues Druckpapier weiterverwendet werden können. So wurde beispielsweise vorgeschlagen, bedrucktes Papier mit einer Lösung von Trinatriumphospbat zu behandeln, den in Breiform umgewandelten Stoff stark zu bearbeiten., aufzuschlagen und hierauf zu waschen, um das Papier vollständig von Tinte und Leim zu befreien. Auch die Verwendung eines 1'yrophosphates in Verbindung mit ölhaltigen Mitteln ist vorgeschlagen i «-orden.These processes all have the purpose of getting the printer's ink out of print Remove paper so that it can be used for new printing paper can. For example, it has been suggested to use printed paper with a solution To treat of trisodium phosphate, the substance transformed into pulp form greatly edit., open and then wash to completely remove the paper Get rid of ink and glue. Also the use of a 1'yrophosphate in connection using oily agents is suggested.

Demgegenüber besteht die Erfindung darin, schwärze daß als Mittel Tetranatriuinl)vrol)liosl>hat zum Ablösen der allein Drucker- be nutzt werden kann. Gegenüber den bekannten Mitteln ergibt sich bei dein Erfindungsgegenstand der Vorteil, daß das Mittel für sich allein zur Reinigung von bedrucktem Papier, vorzugsweise Zeitungsdruckpapier, verwendbar ist und besser wirkt als die als bekannt nachgewiesenen Mittel, zudem wesentlich billiger ist.In contrast, the invention consists in that black as a means Tetranatriuinl) vrol) liosl> has to be used to remove the printer alone. Compared to the known means, there is the advantage of your subject matter of the invention, that the agent on its own for cleaning printed paper, preferably Newsprint, is usable and works better than what has been proven to be known Means, in addition, is much cheaper.

Die Pyrophosphate der Alkalien und des Ammoniaks besitzen. schon in sehr verdünnter Lösung eine ausgezeichnete \@'aschwirkung für Druckerschwärze. Wenn man bedrucktes Zeitungspapier im Holländer mit @@'asser allein aufschlugt und daraus ein Papierblatt schöpft, so besitzt dieses einen Weißnehalt etwa 39 gegen Barytweiß, mittels des Kugelreflektometer-Stufenphototneters der Firrna Carl Zeiß, Jena, gemessen; frischer ungebleichter Holzschliff dagegen hat etwa 64.Possess the pyrophosphates of alkalis and ammonia. already in very dilute solution has an excellent ash effect for printing inks. if you open printed newsprint in the Dutch with @@ 'asser alone and get out of it scoops a sheet of paper, it has a white content of about 39 against barite white, measured by means of the spherical reflectometer step photometer from Firrna Carl Zeiß, Jena; fresh unbleached wood pulp, on the other hand, has about 64.

Behandelt man Zeitungspapier in der gleichen `'eise mit verdünnten Lösungen von Pyrophosphaten in der I@:ilte und schöpft die z abgelöste, obenauf schwimmende Drucker-Z, schwärze ab. so erhält inan schon nach kurzer Zeit Papiere, die je nach Umständen -Weißgelialt von ;6 bis 66 besitzen und sich daher ohne weiteres als Halbstoff für Papier verwenden Iassen. Auch wird bei diesem Verfahren die Festigkeit der Fasern weitgehend erhalten. Beispiel i _5o - bedrucktes Zeitungspapier wurden in eirein Versuchsholländer finit 61 Leitungswasser aufgeschlagen und finit einer Lösung von entwässertem Tetranatriumpyrophosphat versetzt. Nach zweistündigem Unitreiben wird die Flüssigkeit, in der die Druckerschwärze aufgeschlämmt ist, durch ein feines Sieb entfernt. Die zurückbleibende 1#asertnasse kann je nach Bedarf unmittelbar als Halbstoff für neues Papier verwendet oder auf cier Rundsiebniaschine in Pappenforrn gebracht werden.If you treat newsprint in the same `` ice '' with dilute solutions of pyrophosphates in the I @: ilte and skim off the z detached, floating printer Z, black. In this way, after a short time, one receives papers which, depending on the circumstances, have -Weißgelialt from; 6 to 66 and can therefore be used without further ado as pulp for paper. The strength of the fibers is also largely retained in this process. EXAMPLE 150 - printed newsprint were whipped into a test Dutch finite tap water and finite a solution of dehydrated tetrasodium pyrophosphate was added. After two hours of unit rubbing, the liquid in which the printing ink is suspended is removed through a fine sieve. The remaining 1 # asert-wet can be used directly as pulp for new paper or can be put into cardboard on a cylinder mold machine.

Claims (1)

PATE` TAI3sPRUCH Verfahren zur Reinigung des Druckpapiers von Druckerschwärze, dadurch gekennzeichnet, daß als Mittel zum Ablösen der Druckerschwärze 'fetranatriuinp3-rophosphat benutzt wird. PATE` TAI3sPRUCH Process for cleaning printing paper from printing ink, characterized in that fetranatriuinp3-rophosphate is used as a means for removing the printing ink.
DE1937R0099963 1937-07-24 1937-07-25 Process for cleaning printing paper from printing ink Expired DE690459C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937R0099963 DE690459C (en) 1937-07-24 1937-07-25 Process for cleaning printing paper from printing ink

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE208192X 1937-07-24
DE1937R0099963 DE690459C (en) 1937-07-24 1937-07-25 Process for cleaning printing paper from printing ink

Publications (1)

Publication Number Publication Date
DE690459C true DE690459C (en) 1940-07-27

Family

ID=25760398

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937R0099963 Expired DE690459C (en) 1937-07-24 1937-07-25 Process for cleaning printing paper from printing ink

Country Status (1)

Country Link
DE (1) DE690459C (en)

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