DE3338087C1 - Process for neutral sizing of paper, cardboard, paperboard and other cellulose-containing materials - Google Patents
Process for neutral sizing of paper, cardboard, paperboard and other cellulose-containing materialsInfo
- Publication number
- DE3338087C1 DE3338087C1 DE19833338087 DE3338087A DE3338087C1 DE 3338087 C1 DE3338087 C1 DE 3338087C1 DE 19833338087 DE19833338087 DE 19833338087 DE 3338087 A DE3338087 A DE 3338087A DE 3338087 C1 DE3338087 C1 DE 3338087C1
- Authority
- DE
- Germany
- Prior art keywords
- sizing
- resin
- sizing agent
- aluminate
- agent
- 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
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/62—Rosin; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
Abstract
Description
Das Leimungsmittel wird zweckmäßigerweise unmit- telbar in die zu leimende Faserstoffsuspension eingetragen. Nach Vermischung im Pulper oder in einer nachgeschalteten Bütte erfolgt die Aktivierung des Leimungsmittels mittels Säuren und/oder sauer reagierenden Salzen, wobei die Säure- und/oder Salzmenge so bemessen wird, daß ein pH-Wert von etwa 7 erreicht wird. Als Aktivator können alle organischen und anorganischen Säuren eingesetzt werden, die mit den Aluminiumionen weder unlösliche Salze noch Komplexverbindungen bilden. Bei Neutralisation auf einen pH-Wert von 6,8 - 7,2 werden mit dem Leimungsmittel vorzügliche Ergebnisse erhalten. Neben Schwefelsäure und Aluminiumsulfat haben sich auch Ameisensäure und Essigsäure in den durchgeführten Versuchen bestens bewährt Kationische Retentionsmittel verbessern die Fixierung von Faser- und Füllstoff sowie Leimungsmittel erheblich. Die Menge ist abhängig von der Art des Retentionsmittels. The sizing agent is expediently immediately remotely entered into the pulp suspension to be sized. After mixing in the pulper or the sizing agent is activated in a downstream vat by means of acids and / or acidic salts, the amount of acid and / or salt is dimensioned so that a pH of about 7 is reached. As an activator you can all organic and inorganic acids are used that interact with the aluminum ions do not form insoluble salts or complex compounds. With neutralization on one Excellent results are obtained with the sizing agent at pH 6.8 - 7.2. In addition to sulfuric acid and aluminum sulfate, formic acid and acetic acid have also been found Well proven in the tests carried out. Improve cationic retention agents the fixation of fibers and fillers as well as sizing agents is considerable. The amount depends on the type of retention aid.
0,02 bis 0,2 Gew.-%, bezogen auf Stoffansatz, sollten jedoch genügen.However, 0.02 to 0.2% by weight, based on the composition of the substance, should be sufficient.
Es hat sich nunmehr gezeigt, daß das Verfahren gemäß P 3245 390.6-45 noch verbessert werden kann, und zwar derart, daß man in eine wäßrige Suspension von Cellulosefasern mit einem pH-Wert kleiner als 7, insbesondere einem pH-Wert von 6,5 bis 6,9, zunächst ein kationaktives polymeres Retentionsmittel einträgt und darin homogen verteilt und anschließend soviel Leimungsmittel einträgt bis ein pH-Wert größer 7 erreicht ist. Gemäß vorliegender Erfindung sollte insbesondere soviel Leimungsmittel in die wäßrige Suspension eingetragen werden, bis ein pH-Wert von 7,5 bis 8 erreicht ist. It has now been shown that the method according to P 3245 390.6-45 can still be improved, namely in such a way that one is in an aqueous suspension of cellulose fibers with a pH value less than 7, in particular a pH value from 6.5 to 6.9, first a cationic polymeric retention agent enters and distributed homogeneously therein and then introduces as much sizing agent up to pH value greater than 7 is reached. According to the present invention, in particular as much sizing agent are introduced into the aqueous suspension until a pH value from 7.5 to 8 is reached.
Der pH-Wert der Cellulosefasersuspension sollte nicht unterhalb 6 liegen. Als kationaktive Retentionsmittel können Polyäthylenimin, kationische Stärkederivate, Polyacrylamid, Polymethacrylamid in die wäßrige Suspension eingetragen werden. Quartäre Stickstoffverbindungen können ebenso eingesetzt werden wie kationaktive Polymere. Mengen von 0,1 bis 0,5 Gew.-%, bezogen auf den Fasergehalt der wäßrigen Suspension, reichen zur Erzielung einer guten Masseleimung aus, während das Leimungsmittel in Mengen von 0,1 bis 10 Gew.-%, bezogen auf den Fasergehalt der Suspension und berechnet als Feststoffgehalt, eingesetzt wird.The pH of the cellulose fiber suspension should not be below 6 lie. Polyethyleneimine, cationic starch derivatives, Polyacrylamide, polymethacrylamide are added to the aqueous suspension. Quaternaries Nitrogen compounds can be used as well as cation-active polymers. Amounts from 0.1 to 0.5% by weight, based on the fiber content of the aqueous suspension, are sufficient to achieve good in-situ sizing, while the sizing agent in Quantities from 0.1 to 10% by weight, based on the fiber content of the suspension and calculated is used as the solids content.
Anhand eines Beispiels wird der Gegenstand der Erfindung noch näher erläutert: Herstellung des Leimungsmittels In einem Rührgefäß werden 630 Gewichtsteile enthärtetes Wasser vorgelegt. Dann werden in das Wasser 100 Gewichtsteile Natriumaluminatlösung mit einem Gehalt von 19% Al2O3 und 25 Gewichtsteile festes Natriumhydroxid eingetragen. Nachdem sich die Komponenten im Wasser gelöst und verteilt haben, erfolgt die Zugabe von 160 Gewichtsteilen Isopropanol. Anschließend wird ein Gemisch aus 100 Gewichtsteilen Balsamharz und 10 Gewichtsteilen eines mit Maleinsäure umgesetzten Kolophoniumharzes in das Rührgefäß eingetragen. Es wird solange weiter gerührt, bis sämtliche Komponenten in Lösung gegangen sind. The subject matter of the invention will be further elucidated with the aid of an example explained: Production of the sizing agent In a stirred vessel, 630 parts by weight are added Softened water presented. Then 100 parts by weight of sodium aluminate solution are added to the water with a content of 19% Al2O3 and 25 parts by weight of solid sodium hydroxide. After the components have dissolved and distributed in the water, they are added from 160 parts by weight of isopropanol. Then a mixture of 100 parts by weight Gum resin and 10 parts by weight of a maleic acid-reacted rosin resin entered into the stirred vessel. Stirring is continued until all components have gone into solution.
Masseleimung Die neutrale Masseleimung wird mit einem Stoffansatz vorgeführt der aus 50% gebleichtem Fichtesulfitzellstoff und 50% angebleichtem Holzschliff besteht. Zu dem Stoffansatz, der sich in einer Mischbütte befindet, eine Stoffdichte von 4% und einen pH-Wert von 6,5 aufweist, wird ein stark kationisches Retentionsmittel (ein Polyäthylenimin) in Mengen von 0,2 Gew.-%, bezogen auf den Fasergehalt, eingetragen. Nach guter Durchmischung erfolgt die Zugabe von 2% Leimungsmittel (100%ig). Anschließend wird die Masse in der Maschinenbütte umgepumpt und dabei mit etwa der fünffachen Wassermenge (bez. auf Volumen) verdünnt und auf die notwendige Auflaufkonsistenz von etwa 0,8% gebracht Nach Entwässerung und Trocknung der Papierbahn liegt ein vorzüglich geleimtes Papier vor. In-situ sizing The neutral in-situ sizing is done with a fabric approach demonstrated the 50% bleached spruce sulphite pulp and 50% bleached wood pulp consists. A consistency of material for the stock that is in a mixing vat of 4% and a pH of 6.5 becomes a strongly cationic retention aid (a Polyethyleneimine) in amounts of 0.2 wt .-%, based on the fiber content, entered. After thorough mixing, 2% sizing agent (100%) is added. Afterward the mass in the machine chest is pumped around and at about five times as much Amount of water (related to volume) diluted and to the necessary casserole consistency brought by about 0.8%. After dewatering and drying the paper web lies in excellently sized paper.
- Leerseite -- blank page -
Claims (5)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833338087 DE3338087C1 (en) | 1982-12-08 | 1983-10-20 | Process for neutral sizing of paper, cardboard, paperboard and other cellulose-containing materials |
DE8383112302T DE3370360D1 (en) | 1982-12-08 | 1983-12-07 | Agent and process for neutral sizing |
EP83112302A EP0112525B1 (en) | 1982-12-08 | 1983-12-07 | Agent and process for neutral sizing |
AT83112302T ATE26005T1 (en) | 1982-12-08 | 1983-12-07 | MEANS AND METHOD OF NEUTRAL SIZING. |
US06/559,961 US4591412A (en) | 1982-12-08 | 1983-12-08 | Means and method for neutral sizing |
CA000444142A CA1208857A (en) | 1983-10-20 | 1983-12-22 | Composition and process for neutral sizing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823245390 DE3245390C1 (en) | 1982-12-08 | 1982-12-08 | Agent and process for neutral sizing |
DE19833338087 DE3338087C1 (en) | 1982-12-08 | 1983-10-20 | Process for neutral sizing of paper, cardboard, paperboard and other cellulose-containing materials |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3338087C1 true DE3338087C1 (en) | 1984-07-05 |
Family
ID=25806396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833338087 Expired DE3338087C1 (en) | 1982-12-08 | 1983-10-20 | Process for neutral sizing of paper, cardboard, paperboard and other cellulose-containing materials |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3338087C1 (en) |
-
1983
- 1983-10-20 DE DE19833338087 patent/DE3338087C1/en not_active Expired
Non-Patent Citations (1)
Title |
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NICHTS-ERMITTELT * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
AF | Is addition to no. |
Ref country code: DE Ref document number: 3245390 Format of ref document f/p: P |
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D1 | Grant (no unexamined application published) patent law 81 | ||
8363 | Opposition against the patent | ||
8365 | Fully valid after opposition proceedings | ||
8380 | Miscellaneous part iii |
Free format text: SPALTE 2, ZEILE 36 "ABSISCH" AENDERN IN "BASISCH" |
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8340 | Patent of addition ceased/non-payment of fee of main patent |