DE605220C - Process for the treatment of paper machine felts, felt rollers or felt tubes - Google Patents
Process for the treatment of paper machine felts, felt rollers or felt tubesInfo
- Publication number
- DE605220C DE605220C DED64855D DED0064855D DE605220C DE 605220 C DE605220 C DE 605220C DE D64855 D DED64855 D DE D64855D DE D0064855 D DED0064855 D DE D0064855D DE 605220 C DE605220 C DE 605220C
- Authority
- DE
- Germany
- Prior art keywords
- felt
- treatment
- paper machine
- rollers
- tubes
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
Description
Verfahren zur Behandlung von Papiermaschinenfilzen, Filzwalzen oder Filzschläuchen Die Erfindung betrifft eine weitere Ausbildung des Verfahrens nach Patent 604499 und betrifft den Schutz von Papiermaschinenfilzen gegen Säureschäden.Process for the treatment of paper machine felts, felt rollers or Felt tubes The invention relates to a further embodiment of the method Patent 604499 and relates to the protection of paper machine felts against acid damage.
Wie bereits im Hauptpatent auseinandergesetzt, rührt die Schwefelsäure von dem Alaun her, den man bei der Leimung in der Regel in so großen Mengen zusetzen muß, daß eine saure Reaktion vorliegt, weil sonst die Leimung in der Regel nicht vollständig ist. Wenn aber nach erfolgter Leimung an irgendeiner Sfelle des Weges, den die gebildete Papierbahn nimmt, Neutralisations, mittel hinzugefügt werden, sei es auf trokkenem, flüssigem, gas- oder dampfförmigem Wege, durch Auftragen mit Walzen oder in zerstäubter, zersprühter oder verdampfter Form, so gehen diese Neutralisationsmittel in die Filze über und schützen die Filze gegen Säure.As already explained in the main patent, the sulfuric acid stirs from the alum that is usually added in such large quantities when gluing It must be that there is an acidic reaction, otherwise the sizing is usually not is complete. If, however, after the glue has been applied to any skin along the way, which the formed paper web takes, neutralizing agents are added, be it dry, liquid, gas or vapor, by applying with Rolled or in atomized, atomized or vaporized form, these neutralizing agents work into the felts and protect the felts against acid.
Man hat zwar schon vorgeschlagen, dem Papierstoff nach der Leimeng im Holländer oder in der Mischbütte Neutralisationsmittel, z. B. Kreide, zuzusetzen, doch hatte dies die Einverleibung oft unerwünschter Salze zur Folge, ganz abgesehen davon, daß die Leimeng hierdurch in Frage gestellt wurde. Beispiel I Auf die noch feuchte Papierbahn wird z. B. vor dem ersten Trockenzylinder ein Luftstrom geleitet, der etwas Acetamid oder auch Ammoniak enthält. Da. Acetamid und Ammoniak im Wasser äußerst leicht löslich sind, werden sie von der feuchten Papierbahn begierig aufgenommen. Die das Neutralisationsmittel tragende Luft wird zweckmäßig durch ein der Papierbahn , naheliegendes, mit vielen Löchern versehenes Rohr auf die Papierbahn geblasen. Man kann an Stelle des mit vielen Löchern versehenen Rohres auch ein trogartiges Gefäß verwenden, dessen öffnung der Papierbahn zugekehrt ist, und vermeidet auf diese Weise etwaige Störungen der Papierbahn durch zu stark strömende Luft. Beispiel z Man kann auch so verfahren, daß man dem in üblicher Weise umlaufenden Siebwasser immer so viel von dem Neutralisationsmittel, z. B. Ammoniak, zumischt, daß das vom Sieb abfließende Wasser etwa neutral oder gar schwach alkalisch ist.It has already been suggested that paper pulp should be Leimeng in the Dutch or in the mixing vat neutralizing agent, e.g. B. chalk to add, but this often resulted in the incorporation of undesirable salts, quite apart from that of the fact that the Leimeng was thereby called into question. Example I to the still moist paper web is z. B. in front of the first drying cylinder, an air flow is directed, which contains some acetamide or ammonia. There. Acetamide and ammonia in the water are extremely easily soluble, they are eagerly absorbed by the moist paper web. The air carrying the neutralizing agent is expediently passed through one of the paper web , nearby tube with many holes blown onto the paper web. Instead of the tube with many holes, you can also use a trough-like one Use a container with the opening facing the paper web and avoid opening In this way, possible disturbances of the paper web due to excessive air flow. example z You can also proceed in such a way that the white water circulating in the usual way always so much of the neutralizing agent, e.g. B. ammonia, that the dated Sieve draining water is approximately neutral or even slightly alkaline.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED64855D DE605220C (en) | 1932-12-13 | 1932-12-13 | Process for the treatment of paper machine felts, felt rollers or felt tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED64855D DE605220C (en) | 1932-12-13 | 1932-12-13 | Process for the treatment of paper machine felts, felt rollers or felt tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE605220C true DE605220C (en) | 1934-11-07 |
Family
ID=7059054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED64855D Expired DE605220C (en) | 1932-12-13 | 1932-12-13 | Process for the treatment of paper machine felts, felt rollers or felt tubes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE605220C (en) |
-
1932
- 1932-12-13 DE DED64855D patent/DE605220C/en not_active Expired
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