DE414045C - Process for making dense, strong papers - Google Patents

Process for making dense, strong papers

Info

Publication number
DE414045C
DE414045C DESCH68989D DESC068989D DE414045C DE 414045 C DE414045 C DE 414045C DE SCH68989 D DESCH68989 D DE SCH68989D DE SC068989 D DESC068989 D DE SC068989D DE 414045 C DE414045 C DE 414045C
Authority
DE
Germany
Prior art keywords
salts
acid
papers
fiber processing
machines
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
DESCH68989D
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.)
CARL G SCHWALBE DR
Original Assignee
CARL G SCHWALBE 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 CARL G SCHWALBE DR filed Critical CARL G SCHWALBE DR
Priority to DESCH68989D priority Critical patent/DE414045C/en
Application granted granted Critical
Publication of DE414045C publication Critical patent/DE414045C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Description

Verfahren zur Herstellung dichter, fester Papiere. Durch eine Vorbehandlung des zu mahlenden Fasergutes mit Säuren, insbesondere organischen Säuren, kann man eine Quellung der Fasern hervorrufen und dadurch die Mahlarbeit abkürzen, die Bildung von Schleim beschleunigen und so die Vorbedingungen für die Herstellung dichter, fester Papiere schaffen. Die Behandlung mit Säure kann auch in den Zerfaserungsmaschinen, im Kollergang, Raffineur, Holländer, in der Jordanmühle usw. geschehen. In Rücksicht auf die saure Reaktion des Stoffes ist es jedoch zweckmäßig, die Arbeitsorgane der- genannten Maschinen aus säurebeständigem Material herzustellen.Process for the production of dense, strong papers. Through a pre-treatment of the fiber material to be ground with acids, especially organic acids, can be cause a swelling of the fibers and thereby shorten the grinding work, the formation of mucus and thus the preconditions for the production of denser, create stronger papers. The treatment with acid can also be carried out in the fiberizing machines, happen in the pan mill, refiner, Dutchman, in the Jordan mill, etc. In consideration however, it is advisable to inform the working bodies of the substance to manufacture the said machines from acid-resistant material.

Es wurde nun gefunden, daß :es unnötig ist, säurebeständiges Material für genannte Maschinen anzuwenden, wenn man das mit Säure vorbehandelte Fasergut vor oder beim Einbringen in die Holländer oder andere Faserverarbeitungsmaschinen durch Zusatz von Basen, wie Ätznatron, Soda, Kalkmilch, kohlensaurem Kalk usw. neutralisiert. Durch dies° Neutralisation wird eine Einwirkung der Säure auf das Material der Maschine vollständig vermieden, indem aus den Säuren Salze mit den genannten und anderen Basen gebildet werden.It has now been found that: it is unnecessary, acid-resistant material to be used for the machines mentioned, if the fiber material pretreated with acid is used before or during introduction into the Dutch or other fiber processing machines neutralized by adding bases such as caustic soda, soda, milk of lime, carbonate of lime, etc. This neutralization causes the acid to act on the material of the machine completely avoided by making salts from the acids with the said and others Bases are formed.

Noch einfacher gestaltet sich die Arbeit, wenn man dem in den Faserverarbeitungsmaschinen befindlichen Fasergut an Stelle von Säuren deren Salze bei Beginn oder während der Bearbeitung (z. 11. Mahlung) zufügt. Man erhält dann eine wesentliche Verkürzung der Mahldauer.The work is even easier if you do it in the fiber processing machines located fiber material instead of acids their salts at the beginning or during the Processing (e.g. 11th grinding) adds. A substantial shortening is then obtained the grinding time.

Beispiel i.Example i.

Zu dem in den Holländer eingetragnen Fasergut wird bei Beginn der Mahlarbeit die neutralisierte Lösung von a Prozent Milchsäure, auf das Fasergut berechnet, hinzugegeben und hierauf die Mahlarbeit bis zu dem gewünschten @lahlgrad vorgenommen.At the beginning of the fiber material entered in the Dutch Grinding work the neutralized solution of a percent lactic acid, on the fiber material calculated, added and then the grinding work up to the desired degree of grind performed.

Beispiel e.Example e.

Auf ioo Teile des in den Holländer eingetragenen Zellstoffes werden 3 Teile kristallisiertes Natriumsulfit oder eine Lösung von Natriumsulfit, wie man sie aus Sodalösung durch Einleiten von Schwefligsäuregas erhalten kann, hinzugegeben und hierauf mit der NIahlung begonnen.On 100 parts of the pulp registered in the Dutch 3 parts of crystallized sodium sulfite or a solution of sodium sulfite, how to it can be obtained from soda solution by passing in sulfurous acid gas, added and then started the payment.

Der Zusatz genannter Lösungen bewirkt eine durchschnittliche Abkürzung der Mahlclauer bis auf die Hälfte der üblichen Zeit.The addition of the solutions mentioned results in an average abbreviation the Mahlclauer up to half the usual time.

Claims (1)

P_1TE\T-ANSPRL'CI3E: i. Verfahren zur Herstellung dichter, fester Papiere, dadurch gekennzeichnet, daß man das mit Säuren, vorzugsweise mit organischen Säuren, vorbehandelte Material beim Einbringen in die Faserverarbeitungsmaschinen mit Basen oder Salzen, z. B. Ätznatron, Soda, Ätzkalk, kohlensaurere Kalk, neutralisiert und hierauf die übliche Faserverarbeitung (Kollern, Mahlen usw.) vornimmt. z. Verfahren nach Patentanspruch i, dadurch gekennzeichnet, daß man zu dem in die Faserverarb.eitungsmaschinen eingetragenen Fasergut Salze, insbesondere Natrium- und Kalziumsalze organischer Säuren, wie z. B. Essigsäure, Milchsäure, Ox-alsäure usw., hinzusetzt.P_1TE \ T-ANSPRL'CI3E: i. Method of making denser, stronger Papers, characterized in that this is done with acids, preferably with organic Acids, pretreated material when introduced into fiber processing machines with bases or salts, e.g. B. caustic soda, soda, quick lime, more carbonic Lime, neutralized and then the usual fiber processing (mulling, grinding, etc.) undertakes. z. Process according to claim i, characterized in that one to the fiber material introduced into the fiber processing line machines, salts, in particular Sodium and calcium salts of organic acids, such as. B. acetic acid, lactic acid, Oxalic acid, etc., added.
DESCH68989D 1923-11-18 1923-11-18 Process for making dense, strong papers Expired DE414045C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH68989D DE414045C (en) 1923-11-18 1923-11-18 Process for making dense, strong papers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH68989D DE414045C (en) 1923-11-18 1923-11-18 Process for making dense, strong papers

Publications (1)

Publication Number Publication Date
DE414045C true DE414045C (en) 1925-05-20

Family

ID=7439551

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH68989D Expired DE414045C (en) 1923-11-18 1923-11-18 Process for making dense, strong papers

Country Status (1)

Country Link
DE (1) DE414045C (en)

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