DE667723C - Process for the recovery of pure paper stock from waste paper printed with manganese ink - Google Patents

Process for the recovery of pure paper stock from waste paper printed with manganese ink

Info

Publication number
DE667723C
DE667723C DEST54374D DEST054374D DE667723C DE 667723 C DE667723 C DE 667723C DE ST54374 D DEST54374 D DE ST54374D DE ST054374 D DEST054374 D DE ST054374D DE 667723 C DE667723 C DE 667723C
Authority
DE
Germany
Prior art keywords
recovery
waste paper
manganese
pure
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
DEST54374D
Other languages
German (de)
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.)
KARL STEPHAN DR
FRIEDRICH KOERNER DR
Original Assignee
KARL STEPHAN DR
FRIEDRICH KOERNER DR
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 KARL STEPHAN DR, FRIEDRICH KOERNER DR filed Critical KARL STEPHAN DR
Priority to DEST54374D priority Critical patent/DE667723C/en
Application granted granted Critical
Publication of DE667723C publication Critical patent/DE667723C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/025—De-inking
    • 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
    • Y02W30/64—Paper recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)
  • Paper (AREA)

Description

Verfahren zur Wiedergewinnung von reinem Papierstoff aus mit Manganfarbe bedrucktem Altpapier Es sind bereits Verfahren zur Wiedergewinnung von reinem Papierstoff aus mit gewöhnlicher, insbesondere Rußfarbe bedrucktem Altpapier bekannt, nach denen das zerfaserte und gegebenenfalls mittels Erdalkali, saurer Salze oder nicht flüchtiger Säuren bei gewöhnlicher oder erhöhter Temperatur vorbehandelte Altpapier von den verschiedenen Unreinigkeiten durch Einwirkung von Wasserstrahlen oder durch Abschlämmen befreit wird. Ferner ist es bekannt, mit Manganfarbe bedrucktes Altpapier mittels saurer, reduzierend wirkender Flüssigkeiten; insbe= sondere Stilfiten; bei gewöhnlicherTemperatur zu bleichen. Es hat sich jedoch herausgestellt, daß diese bekannten Verfahren nicht genügen, um aus mit Manganfarbe bedrucktem Altpapier reinen Papierstoff zu gewinnen. Selbst nach dem letztgenannten Verfahren find stets gewisse Verfärbungen des Papiers festzustellen, weil in dem aufgeschlagenen Papierstoff der gesamte dunkel gefärbte Farbfirnis (2,5 bis 3 °4) sowie die sonstigen zusätzlichen Schönheitsmittel zurückbleiben. TJan erhält daher auf diese Art und Weise ein nur bei genügender Vermischung mit reinem Papierstoff verwendbares Erzeugnis: Es wurde nun gefunden, daß .man einen vollkommen reinen und weißen Papierstoff aus mit Manganfarbe bedrucktem Altpapier ohne Verwendung teurer, reduzierend wirkender Bleichflüssigkeiten gewinnen kann, wenn man die Bleiche bei Kochtemperatur ausführt und die in der Fasermasse noch verbliebenen unbleichbaren Bestandteile der Druckfarbe, insbesondere Firnisse, anschließend durch Abspritzen mit heißem Wasser entfernt. Durch Ausführung der Bleiche bei Kochtemperatur werden neben der Bleichung der Manganfarbe auch die Firnisse in weitgehendsterii Maße erweicht, die dann unter Aufrechterhaltung ihres erweichten Zustandes durch Anwendung von heißem Wasser leicht abgespritzt werden können.Process for the recovery of pure paper stock from manganese color printed waste paper There are already processes for the recovery of pure paper stock known from waste paper printed with ordinary, in particular soot, according to which the frayed and optionally using alkaline earths, acidic salts or non-volatile ones Acids from the waste paper pretreated at normal or elevated temperature various impurities caused by the action of water jets or by blow-down is released. It is also known to use waste paper printed with manganese paint acidic, reducing liquids; especially = special stilfites; at ordinary temperature to bleach. However, it has been found that these known methods do not are sufficient to obtain pure paper stock from waste paper printed with manganese ink. Even after the last-mentioned process, there is always some discoloration of the paper to be determined because in the opened paper stock all of it was darkly colored Color varnish (2.5 to 3 ° 4) as well as the other additional beauty products are left behind. In this way, TJan only gets a good mix Product usable for pure paper stock: It has now been found that one completely pure and white paper stock made from waste paper printed with manganese ink can win without the use of expensive, reducing bleaching liquids, if you carry out the bleaching at boiling temperature and that in the fiber mass still remaining unbleachable components of the printing ink, in particular varnishes, then removed by spraying with hot water. By performing the bleach at the boiling temperature In addition to the bleaching of the manganese color, the varnishes are also largely sterile Measures softened, which then while maintaining their softened state through Application of hot water can be easily hosed off.

Als reduzierendes Mittel zur Lösung des Mangans eignet sich bekanntlich besonders gut Bisulfitlösung; man kann aber auch andere saure, reduzierend wirkende Flüssigkeiten anwenden.As a reducing agent for dissolving the manganese is known to be suitable particularly good bisulfite solution; but you can also use other acidic, reducing agents Apply liquids.

Beispiel i ioo kg zerfasertes, mit Manganfarbe bedrucktes Altpapier werden mit einer Lösung von i bis 2 kg Natriumbisulfit in Zoo 1 Wasser etwa 2o Minuten lang in einem Waschholländer aufgekocht und anschließend auf einem Sieb mittels heißen Wassers abgespritzt. Beispiele ioo kg zerfasertes, mit Manganfarbe bedrucktes Altpapier werden mit 200010,5°1oiger Rongalitlösung in einem offenen.Gefä,ß 30 Minuten lang .gekocht und anschließend auf einem Sieb mittels heißen Wassers abgespritzt.EXAMPLE 100 kg of shredded waste paper printed with manganese paint is boiled with a solution of 1 to 2 kg of sodium bisulfite in Zoo 1 water for about 20 minutes in a washing machine and then sprayed on a sieve using hot water. Examples 100 kg of shredded waste paper printed with manganese ink are boiled with 200010.5 ° 10 Rongalite solution in an open vessel for 30 minutes and then sprayed on a sieve using hot water.

Claims (1)

PATENTANSPRUCH; Verfahren zur Wiedergewinnung von reinem Papierstoff aus mit lflanganfarbe bedrucktem Altpapier durch Bleichender Druckfarbe mit einer sauren, reduzierend wirkenden Flüssigkeit, dadurch gekenn-Y zeichnet; daß die Bleiche bei Kochtemperatur ausgeführt wird und die in der Fasermasse noch verbliebenen unbleichbaren Bestandteile der Druckfarbe, insbesondere Firnisse, anschließend durch Abspritzen mit heißem Wasser entfernt werden. PATENT CLAIM; Process for the recovery of pure paper stock from waste paper printed with oil-long ink by bleaching the printing ink with an acidic, reducing liquid, characterized in that Y is marked; that the bleaching is carried out at boiling temperature and the unbleachable constituents of the printing ink that still remain in the fiber mass, in particular varnishes, are then removed by spraying off with hot water.
DEST54374D 1936-01-23 1936-01-23 Process for the recovery of pure paper stock from waste paper printed with manganese ink Expired DE667723C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST54374D DE667723C (en) 1936-01-23 1936-01-23 Process for the recovery of pure paper stock from waste paper printed with manganese ink

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST54374D DE667723C (en) 1936-01-23 1936-01-23 Process for the recovery of pure paper stock from waste paper printed with manganese ink

Publications (1)

Publication Number Publication Date
DE667723C true DE667723C (en) 1938-11-18

Family

ID=7466993

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST54374D Expired DE667723C (en) 1936-01-23 1936-01-23 Process for the recovery of pure paper stock from waste paper printed with manganese ink

Country Status (1)

Country Link
DE (1) DE667723C (en)

Similar Documents

Publication Publication Date Title
DE667723C (en) Process for the recovery of pure paper stock from waste paper printed with manganese ink
DE610975C (en) Process for the recovery of pure paper stock from waste paper printed with soot ink
DE39260C (en) Procedure for removing the shiny bark from Spanish cane
DE513373C (en) Process for processing raw silk
DE527950C (en) Process for the production of sulphite pulp
DE406110C (en) Process for tanning animal skins
DE667615C (en) Process for the production of pulp from wood rich in resin, in particular pine wood
DE562181C (en) Process for obtaining purified cellulose
DE344499C (en) Process for the regeneration of used bleaching earth
DE747946C (en) Process for removing printing ink from waste paper
DE561455C (en) Process for refining wood veneers
DE1122362B (en) Process for the production of paper stock for printing and packaging papers from hemp
DE633047C (en) Process for printing pigment inks on fabric
DE409105C (en) Process for dyeing rayon with sulfur dyes
DE523864C (en) Process for the production of a pure paper stock from printed waste paper
DE610315C (en) Process for the production of water-insoluble azo dyes on wool
DE512638C (en) Process to increase the wetting and penetration ability of alkaline treatment baths in the textile industry
DE741416C (en) Process for cleaning and bleaching of sulphite cellulose waste liquor
DE508386C (en) Process for bleaching linen
DE515018C (en) Process for the production of soda pulp
DE408861C (en) Process for the production of sodium perborate
DE608834C (en) Method of washing and degreasing wool
AT53935B (en) Process for the production of etching effects on vat dyes.
AT62810B (en) Process for the production of viscose (cellulose xanthogenate) and its use for covering or printing suitable documents.
DE240037C (en)