DK170686B1 - Method of making paper - Google Patents
Method of making paper Download PDFInfo
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- DK170686B1 DK170686B1 DK154788A DK154788A DK170686B1 DK 170686 B1 DK170686 B1 DK 170686B1 DK 154788 A DK154788 A DK 154788A DK 154788 A DK154788 A DK 154788A DK 170686 B1 DK170686 B1 DK 170686B1
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Classifications
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- 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
- D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
- D21H23/765—Addition of all compounds to the pulp
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- 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
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
- D21H17/16—Addition products thereof with hydrocarbons
-
- 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
- D21H17/17—Ketenes, e.g. ketene dimers
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
Landscapes
- Paper (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electroluminescent Light Sources (AREA)
- Electronic Switches (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
* DK 170686 B1 i* DK 170686 B1 i
Den foreliggende opfindelse angår en forbedret fremgangsmåde til fremstilling af papir.The present invention relates to an improved process for making paper.
Den rå papirmasse, der i hovedsagen består af cellulose-5 fibre, bringes i form af en fortyndet vandig suspension, som føres til fødekuben ved begyndelsen af papirmaskinen, hvorfra den fordeles på et filtrerende væv, på hvilket papirbanen dannes. Denne bane afsuges og tørres derpå. Kvaliteten og egenskaberne af det opnåede papir bestemmes 10 især gennem driftsbetingelserne for papirmaskinen, den rå papirmasse, de forskellige additiver, som man sætter til suspensionen før dannelsen af banen, og ligeledes de produkter, som man placerer på papirbanen efter det filtrerende væv.The raw pulp, which is mainly cellulose fibers, is brought in the form of a dilute aqueous suspension which is fed to the feed cube at the beginning of the paper machine from which it is distributed on a filtering tissue on which the paper web is formed. This web is aspirated and then dried. The quality and properties of the paper obtained are determined in particular by the operating conditions of the paper machine, the raw pulp, the various additives added to the suspension prior to the formation of the web, and also the products placed on the paper web after the filtering web.
1515
Den foreliggende opfindelse angår nærmere betegnet en fremgangsmåde, hvorved man tilsætter forskellige produkter før dannelsen af banen. Man tilsætter således uorganiske fyldstoffer, såsom calciumcarbonat og titandioxyd.More particularly, the present invention relates to a process whereby various products are added prior to forming the web. Thus, inorganic fillers such as calcium carbonate and titanium dioxide are added.
20 Disse fyldstoffer gør papirbanen opak, hvilket letter skrivningen og trykningen derpå. Man tilsætter ligeledes et limningsmiddel for at gøre banen modstandsdygtig overfor væsker, dvs. at den limede papirbane kan anvendes til at skrive på og til at trykke på. Man skal ligeledes til- 25 sætte et tilbageholdelsesmiddelsystem, som udfælder limningsmiddel på cellulosefibrene, og som også muliggør tilbageholdelsen af de uorganiske fyldstoffer i papirmassen.These fillers make the paper web opaque, which facilitates the writing and printing thereof. A sizing agent is also added to make the web resistant to liquids, ie. that the glued paper web can be used for writing and printing. It is also necessary to add a retention agent system which precipitates adhesive on the cellulose fibers and which also allows the retention of the inorganic fillers in the pulp.
30 Systemet af tilbageholdelsesmidler er ofte en blanding af flere produkter. Man tilsætter ligeledes visse produkter for at forbedre de mekaniske egenskaber af papiret, farvestoffer etc.The system of retention agents is often a mixture of several products. Some products are also added to improve the mechanical properties of the paper, dyes, etc.
35 Alle disse produkter, som man tilsætter, har ikke en veldefineret indvirkning på et enkelt karakteristikum af papiret; men de indvirker mere eller mindre sammen med DK 170686 B1 2 hverandre og på flere af parametrene. Når man anvender syrefølsomme fyldstoffer, f.eks. calciumcarbonat, er det vigtigt, at limningsmidlet og systemet til tilbageholdel- * se ikke fører til en sur vandig suspension, som fremkal-5 der en nedbrydning af carbonatet samt skumdannelse. #35 All these products that are added do not have a well-defined effect on a single characteristic of the paper; but they interact more or less with DK 170686 B1 2 each other and on several of the parameters. When using acid-sensitive fillers, e.g. calcium carbonate, it is important that the adhesive and the retention system do not lead to an acidic aqueous suspension which causes carbonate decomposition as well as foaming. #
Man beklæder hyppigt papirbanen med forskellige produkter, især med calciumcarbonat. En del af det kriderede papir kan ligeledes recirkuleres ved begyndelsen af frem-10 stillingsprocessen før dannelsen af banen, hvilket bringer carbonatet i suspensionen før papirmaskinen, også i det tilfælde, hvor man har bragt andre fyldstoffer end carbonatet i suspension. Man foretrækker derfor at anvende limningsmidler og systemer til tilbageholdelse, som 15 ikke fører til en sur suspension, hvilket man betegner som limning i neutralt medium.The paper web is frequently coated with various products, especially with calcium carbonate. A portion of the credited paper may also be recycled at the beginning of the manufacturing process prior to the formation of the web, which brings the carbonate into the suspension before the paper machine, even in the case where fillers other than the carbonate have been suspended. It is therefore preferred to use adhesives and retention systems which do not lead to an acidic suspension, which is referred to as bonding in neutral medium.
I artiklen med betegnelsen "Papermaking additives", side 803-825, bind 16 i 3. udgave af samleværket KIRK OTHMER 20 udgivet af John Wiley 1981 omtales på side 811-812 limningsmidler af familien bestående af dimere alkylketener anvendelige i neutralt medium; men man præciserer ikke systemet til tilbageholdelse.In the article entitled "Papermaking additives", pages 803-825, volume 16 of the 3rd edition of the assemblage KIRK OTHMER 20 published by John Wiley 1981, pages 811-812 refer to the sizing agents of the family consisting of dimeric alkyl chains useful in neutral medium; but one does not clarify the system of detention.
25 I patentansøgningen med japansk prioritet 85 JP 031519 fra 21. februar 1985 omtales en limning i neutralt medium. Fyldstoffet er calciumcarbonat, man tilsætter alu-miniumpolychlorid og et tilbageholdelsesmiddel med høj molekylvægt.25 Japanese patent application 85 JP 031519 of February 21, 1985 discloses a bonding in neutral medium. The filler is calcium carbonate, aluminum polychloride and a high molecular weight retention agent are added.
30 I GB patentskriftnr. 2 015 614 omtales fremgangsmåde til fremstilling af papir og af pap, i hvilke man sætter et basisk aluminiumpolychlorsulfat til suspension før dan- * nelsen af banen. Men undertiden limer man ikke, og under-35 tiden anvender man kolofonium, og det vides, at kollofan bør anvendes i surt medium, se det ovenfor citerede værk af KIRK OTHMER side 810.30 In GB patent no. No. 2 015 614 discloses the process for making paper and cardboard in which a basic aluminum polychlorosulfate is suspended prior to formation of the web. But sometimes you do not glue, and in the meantime you use rosin, and it is known that rosin should be used in acidic medium, see the work cited above by KIRK OTHMER page 810.
DK 170686 B1 3 WO patentskrift nr. 86/02677 angår et hydrofoberingsmid-del til cellulosefibre. Midlet består af i vand fint dis-. pergeret harpiks- eller fedtsyre, hvor den vandige fase indeholder et polyaluminiumsalt og fortrinsvis en kat-5 ionisk organisk forbindelse. Midlet kan f.eks. tilføres til cellulosefibrene ved tilsætning af en vandig suspension af disse.DK 170686 B1 3 WO patent 86/02677 relates to a hydrophobing agent for cellulose fibers. The agent consists of water-fine dis-. pergous resin or fatty acid, wherein the aqueous phase contains a polyaluminum salt and preferably a cationic organic compound. The agent may e.g. is added to the cellulose fibers by the addition of an aqueous suspension.
Man har nu fundet en forbedret fremgangsmåde til frem-10 stilling af papir, som er ejendommelig derved, at man til suspensionen indeholdende cellulosefibrene før dannelsen af banen sætter; a) et uorganisk fyldstof, 15 b) et limningsmiddel valgt blandt dimere alkylketener og/eller derivater heraf og/eller carboxylsyreanhydri-der med fedtsyrekæder, c) kationisk stivelse, d) aluminium polychlorid.An improved method has been found for making paper which is peculiar in that the suspension containing the cellulose fibers prior to forming the web is added; a) an inorganic filler; b) a sizing agent selected from dimeric alkyl ketene and / or derivatives thereof and / or carboxylic acid anhydride with fatty acid chains; c) cationic starch; d) aluminum polychloride.
2020
Suspensionen indeholdende cellulosefibrene kan være af rå papirmasse eller af bleget papirmasse, eller en blanding af rå papirmasse og bleget papirmasse, eller en masse allerede indeholdende additiver. De uorganiske fyldstoffer 25 kan være et eller flere vilkårlige produkter, fortrinsvis valgt blandt lerarter, calciumcarbonat, siliciumoxyd, hy-dratiseret aluminiumoxyd, talkum, titandioxyd etc.The suspension containing the cellulose fibers may be of raw pulp or of bleached pulp, or a mixture of raw pulp and bleached pulp, or a mass already containing additives. The inorganic fillers 25 may be one or more arbitrary products, preferably selected from clays, calcium carbonate, silica, hydrated alumina, talc, titanium dioxide, etc.
Disse produkter indføres på en fint fordelt form eller i 30 form af pastaer eller opløsninger i suspensionen. Man foretrækker at anvende calciumcarbonat. Mængden af calciumcarbonat kan være ret vilkårlig, og hyppigt er den på højst 40 dele pr. 100 dele cellulosefibre, fortrinsvis mellem 10 og 25 dele. Denne mængde tager ikke hensyn til 35 fyldstoffer indholdt i papir, som recirkuleres til føde-kuben ved begyndelsen af fremstillingen i suspensionen.These products are introduced in a finely divided form or in the form of pastes or solutions into the suspension. It is preferred to use calcium carbonate. The amount of calcium carbonate can be quite arbitrary and is often at most 40 parts per minute. 100 parts of cellulose fibers, preferably between 10 and 25 parts. This amount does not take into account 35 fillers contained in paper which are recycled to the food cube at the beginning of preparation in the suspension.
DK 170686 B1 4DK 170686 B1 4
Som limningsmidler anvendes dimere alkylketener og/eller carboxylsyreanhydrider med fedtsyrekæder. Den mængde, der skal anvendes, er en funktion af de for papiret efter- * stræbte egenskaber. Mængden er med fordel mindre end 10 5 dele pr. 100 dele cellulose fibre, fortrinsvis mellem 0,1 * og 2 dele.As sizing agents dimeric alkyl ketene and / or carboxylic anhydride with fatty acid chains are used. The amount to be used is a function of the characteristics of the paper. The amount is preferably less than 10 5 parts per 100 parts of cellulose fibers, preferably between 0.1 * and 2 parts.
Den kationiske stivelse er en blanding af et eller flere produkter, der markedsføres under det generiske navn kat-10 ionisk stivelse. Disse produkter er f.eks. sådanne, som er beskrevet i KIRK 0THMER, 3. udgave, bind 21, side 503.The cationic starch is a mixture of one or more products marketed under the generic name of cationic starch. These products are e.g. those described in KIRK 0THMER, 3rd edition, Volume 21, page 503.
Mængden er med fordel mindre end 5 dele pr. 100 dele cellulosefibre, fortrinsvis mindre end 2 dele.The amount is preferably less than 5 parts per unit. 100 parts of cellulose fibers, preferably less than 2 parts.
15 Udtrykket aluminiumpolychlorid betegner produkter, som man sædvanligvis kalder "aluminium polychlorid", "basisk aluminium polychlorid", "basisk aluminium polychlorsul-fat", samt fortrinsvis et eller flere af følgende produkter: 20 1) saltet med formlen: A1n<0H>,nC13n-,n (I) 25 hvori n er et vilkårligt tal, 3n-m er positivt, idet m og n er hele positive tal; og idet dette salt yderligere kan indeholde en polyvalent anion Y valgt blandt svovlsyre anionerne, phosphorsyre anionerne, polyphosphorsyre an-ionerne, siliciumsyre anionerne, chromsyre anionerne,The term aluminum polychloride refers to products commonly referred to as "aluminum polychloride", "basic aluminum polychloride", "basic aluminum polychlorosulfate", and preferably one or more of the following products: 1) the salt of the formula: A1n <0H>, nC13n-, n (I) 25 wherein n is any number, 3n-m is positive, with m and n being whole positive numbers; and wherein this salt may further contain a polyvalent anion Y selected from the sulfuric acid anions, phosphoric anions, polyphosphoric anions, silicic anions, chromic acid anions,
30 carboxylsyre anionerne og sulfonsyre anionerne, idet det molære forhold YThe carboxylic acid anions and the sulfonic acid anions, with the molar ratio Y
Al fortrinsvis befinder sig mellem 0,015 og 0,4. f 35 2) saltet med formlen: A1n<0H>mC13n-m-2k<SVk (1I> DK 170686 B1 5 hvor k, m og n er positive hele tal, 3n > m + 2k, basi-citeten m/3n befinder sig mellem 0,3 og 0,7, og k/n -* 0,01-0,3. Dette produkt kan fremstilles i overensstemmel se med den fremgangsmåde, der er beskrevet i US patent-5 skrift nr. 3 929 666; 3) saltet med formlen: A1n<°H>3n-,n-2pC1m<S04>p z (111) 10 hvori (3n-m-2p)/3n = 0,4-0,7; p = 0,04-0,25n; m/p = 8-35; k, m, n og p er hele tal, og z er mindst 1. Dette produkt er beskrevet i GB patentskrift nr. 2 128 977; 15 4) basisk aluminiumchlorsulfat med formlen: A1n°VS04>kC13n-m-2k <1V) hvori basiciteten eller det molære forhold m x 100 udgør 20 3n mellem ca. 40% og ca. 65%; derved, at det udviser et forhold mellem ækvivalent Al/ækvivalent Cl mellem 2,8 og 5, en tilsyneladende mole-25 kylvægt MA målt ved klassisk diffusion af lys samt tilsyneladende hydrodynamiske diametre ØZ og ØW målt ved kvasi-elastisk diffusion af lys med følgende karakteristika: 30 MA 7000 - 35000 ØZ (Å) = 350 - 2500 ØW (A) = 200 - 1200Al is preferably between 0.015 and 0.4. f) 2) the salt of formula: A1n <0H> mC13n-m-2k <SVk (1I> DK 170686 B1 where k, m and n are positive integers, 3n> m + 2k, the basicity m / 3n is ranges from 0.3 to 0.7, and k / n - * 0.01 to 0.3 This product can be prepared in accordance with the process described in U.S. Patent No. 3,929,666; 3) the salt of the formula: A1n <° H> 3n-, n-2pC1m <S04> pz (111) wherein (3n-m-2p) / 3n = 0.4-0.7; p = 0.04-0.25n; m / p = 8-35; k, m, n and p are integers and z is at least 1. This product is disclosed in GB patent specification 2 128 977; 4) basic aluminum chlorosulfate of the formula: A1n ° VS04> kC13n-m-2k <1V) wherein the basicity or molar ratio m x 100 amounts to 20 3n between approx. 40% and approx. 65%; in that it exhibits a ratio of equivalent Al / equivalent Cl between 2.8 and 5, an apparent molecular weight MA measured by classical diffusion of light, and apparent hydrodynamic diameters ØZ and ØW measured by quasi-elastic diffusion of light with the following characteristics: 30 MA 7000 - 35000 EZ (Å) = 350 - 2500 EW (A) = 200 - 1200
Dette produkt er beskrevet i fransk patentskrift nr.This product is described in French Pat.
35 2 584 699. Den mængde aluminiumpolychlorid, der skal an vendes, udtrykt som A^O^ er med fordel mindre end 0,5 dele pr. 100 dele cellulosefibre, fortrinsvis mellem 0,05 DK 170686 B1 6 og 0,2 dele.The amount of aluminum polychloride to be used, expressed as A₂O ^, is advantageously less than 0.5 parts per liter. 100 parts of cellulose fibers, preferably between 0.05 parts and 0.2 parts.
De ovenfor omtalte produkter a) - d) tilsættes separat *- eller i blanding eller partielt blandet og i en hvilken 5 som helst rækkefølge. Man foretrækker dog at tilsætte > aluminiumpolychloridet efter de øvrige additiver. Man foretrækker ligeledes, at aluminiumpolychloridet tilsættes så nær som muligt til fødekuben ved begyndelsen af maskinen. Man stiller ikke særlige betingelser med hensyn 10 til den kationiske stivelse og aluminiumpolychloridet i systemet til tilbageholdelse. Som det er anført ovenfor, virker alle de produkter, der er sat til suspensionen før dannelsen af papirbanen, sammen. Den foreliggende opfindelse består deri, at man tilsætter produkterne a) - d) 15 til suspensionen, og man har nu fundet, at den samtidige og samlede anvendelse af disse produkter udviser talrige fordele. Den foreliggende opfindelse er nyttig ved fremstillingen af papir limet i neutralt medium. Fremgangsmåden ifølge den foreliggende opfindelse gør det muligt at 20 forsyne papiret med fyldstoffer af produkter, der er syrefølsomme, såsom calciumcarbonat.The above-mentioned products a) - d) are added separately * - or in admixture or partially blended and in any order. However, it is preferred to add> the aluminum polychloride after the other additives. It is also preferred that the aluminum polychloride be added as close as possible to the feed cube at the beginning of the machine. No special conditions are set with respect to the cationic starch and the aluminum polychloride in the retention system. As stated above, all the products added to the suspension prior to the formation of the paper web work together. The present invention consists in adding products a) to d) to the suspension and it has now been found that the simultaneous and total use of these products has numerous advantages. The present invention is useful in the preparation of paper glued in neutral medium. The process of the present invention makes it possible to provide the paper with fillers of products that are acid sensitive, such as calcium carbonate.
En anden fordel knyttet til opfindelsen er den gode tilbageholdelse af fyldstofferne og som følge deraf en kraf-25 tig formindskelse af materiale i suspension i det afløbsvand, som opnås under dannelsen af banen.Another advantage of the invention is the good retention of the fillers and, consequently, a substantial reduction in suspension material in the effluent obtained during the formation of the web.
En anden fordel knyttet til opfindelsen er en meget større produktivitet for papirmaskinen og en bedre intern ko-30 hæsion. Alle disse fordele vil fremgå af eksemplerne.Another advantage of the invention is a much greater productivity of the paper machine and a better internal cohesion. All these advantages will be apparent from the examples.
**
Man kan også sætte til suspension af cellulosefibrer før dannelsen af banen og udover produkterne a) - d) andre produkter, såsom farvestoffer og midler til mekanisk for-35 stærkning af banen.It is also possible to add cellulose fiber suspension before forming the web and in addition to the products a) - d) other products such as dyes and agents for mechanical reinforcement of the web.
Med en anden udførelses form for opfindelsen kan man til- DK 170686 B1 7 sætte udover produkter a) - d) et eller flere produkter valgt blandt polyacrylamider, poly(ethyleniminer), car-boxymethylcellulose, formaldehyd-urinstof-kunstharpikser, formaldehyd-melamin-kunstharpikser, epichlorhydrin-amino-5 polyamid-kunstharpikser og epichlorhydrin-polyamid-kunst- harpikser. Man anvender med fordel disse produkter udover kationisk stivelse og i de samme mængder.In another embodiment of the invention, it is possible to add in addition to products a) - d) one or more products selected from polyacrylamides, poly (ethyleneimines), carboxymethyl cellulose, formaldehyde urea synthetic resins, formaldehyde melamine. synthetic resins, epichlorohydrin-amino-polyamide synthetic resins and epichlorohydrin-polyamide synthetic resins. These products are advantageously used in addition to cationic starch and in the same amounts.
De efterfølgende eksempler belyser opfindelsen eller er 10 anført som sammenligningseksempler.The following examples illustrate the invention or are listed as comparative examples.
Eksempel 1 (ikke i overensstemmelse med opfindelsen)Example 1 (not in accordance with the invention)
Fremstilling af et papir til trykning eller til skrivning 15 og bestemt til at blive krideret.Preparation of a paper for printing or for writing 15 and destined to be credited.
- Sammensætning af den vandige suspension før dannelsen af båndet, betegnes som "sammensætning ved fødekuben i begyndelsen af maskinen": 20- Composition of the aqueous suspension prior to forming the belt is referred to as "composition at the feed cube at the beginning of the machine": 20
Fibre = bleget kemisk masse 60 dele recirkuleret krideret papir 20 deleFibers = bleached chemical mass 60 parts recycled crusted paper 20 parts
Fyldstoffer = CaCOg 20 deleFillers = CaCOg 20 parts
Limningsmidler = dimer alkylketen 0,15 dele 25 - Karakteristika for maskinens funktion:Bonding agents = dimer alkyl chain 0.15 parts 25 - Characteristics of machine operation:
Wirens effektive bredde: 3,5 meter Papirets gramvægt: 180 g/m2 30 Arten af papir: underlag for kridering, derpå påføring i pressesektionen af stivelse, der er dextrin-omdannet eller enzymbehandlet eller oxyderet.Effective width of the wire: 3.5 meters Paper weight: 180 g / m2 30 The nature of the paper: substrate for sliding, then applied in the press section of starch dextrin-converted or enzyme-treated or oxidized.
- Man tilsætter kationisk stivelse (0,3 dele pr. 100 dele 35 fibre) og 420 g/ton fibre af poly(ethylenimid).- Cationic starch (0.3 parts per 100 parts 35 fibers) and 420 g / ton poly (ethylene imide) fibers are added.
- Man opnår en produktionshastighed på 207 m/min., en DK 170686 B1 8 tilbageholdelse af fyldstofferne på 77%, og en samlet tilbageholdelse på 92%.- A production speed of 207 m / min is achieved, a retention of the fillers of 77% and a total retention of 92%.
Den interne kohæsion målt med apparatet betegnes som "med 5 pendul" er 87. Det anvendte apparat med med pendul er INTERNAL BOND IMPACT TESTER MODEL B leveret af GCA/-PRECISION SCIENTIFIC, 3737 W. Cortland Street, CHICAGO, USA.The internal cohesion measured with the appliance is designated as "with 5 pendulum" is 87. The appliance with pendulum used is INTERNAL BOND IMPACT TESTER MODEL B supplied by GCA / PRECISION SCIENTIFIC, 3737 W. Cortland Street, CHICAGO, USA.
10 pH i suspension under dannelsen af båndet er 7,4. Mængden af materialet i suspension (MES) i det rensede returvand er 170 mg/1.The pH of suspension during the formation of the band is 7.4. The amount of suspension material (MES) in the purified return water is 170 mg / l.
Eksempel 2 (ifølge opfindelsen) 15Example 2 (according to the invention) 15
Man går frem analogt med eksempel 1; men i stedet for poly(ethylenimin) tilsætter man et aluminiumpolychlorid med formlen (II) i en mængde på 0,1 del (udtrykt som A^Og) pr. 100 dele cellulosefibre.One proceeds analogously to Example 1; but instead of poly (ethyleneimine), an aluminum polychloride of formula (II) is added in an amount of 0.1 part (expressed as A 100 parts cellulose fibers.
2020
Man opnår på denne måde en produktionshastighed på 221 m/min., en tilbageholdelse af fyldstofferne på 86%, og en total tilbageholdelse på 95,5%.In this way, a production rate of 221 m / min is obtained, a retention of the fillers of 86% and a total retention of 95.5%.
25 Den interne kohæsion er på 110, MES målt i det rensende returvand er 100 mg/1, og pH i fødekuben i begyndelsen af maskinen er 7,3.25 The internal cohesion is 110, the MES measured in the purifying return water is 100 mg / l, and the pH of the feed cube at the beginning of the machine is 7.3.
Aluminiumpolychlorid bevarer, trods sin sure karakter me-30 diet i zonen på et pH, som er forligeligt med anvendelsen af calciumcarbonat. Det medfører en forøgelse af den samlede tilbageholdelse på 3,5 procentpoint og en tilbageholdelse af fyldstofferne på 9 procentpoint. Maskinens hastighed har kunnet forøges med 7%. Indholdet af mate-35 riale i suspension i vandstrømmen under nettet er klart blevet formindsket. Man bemærker sig en forøgelse af den interne kohæsion.Aluminum polychloride, despite its acidic nature, retains medium in the zone at a pH compatible with the use of calcium carbonate. This results in an increase of the total retention of 3.5 percentage points and a retention of the fillers of 9 percentage points. The speed of the machine has been increased by 7%. The content of material in suspension in the water flow below the grid has clearly been reduced. An increase in internal cohesion is noted.
9 DK 170686 B19 DK 170686 B1
Eksempel 3 (ikke ifølge opfindelsen) , - Sammensætning ved fødekuben ved begyndelsen af maski nen: , 5Example 3 (not according to the invention), - Composition at the feed cube at the beginning of the machine:
Fibrer : bleget kemisk masse : 69 dele bleget mekanisk masse : 15 deleFibers: bleached chemical pulp: 69 parts bleached mechanical pulp: 15 parts
Fyldstoffer: CaC03 : 16 deleFillers: CaCO3: 16 parts
Limning : dimer alkylketen : 0,1 del 10 - Karakteristika for maskinens funktion:Bonding: dimer alkyl chain: 0.1 part 10 - Characteristics of machine operation:
Dobbeltwirens effektive bredde: 2,7 m Gramvægt : 60 g/m2 15 Arten af papir : til offset tryk og derpå påføring af stivelse under presning.Effective width of the double wire: 2.7 m Gram weight: 60 g / m2 15 Nature of paper: for offset printing and then application of starch during pressing.
Man tilsætter kationisk stivelse 0,4 dele pr. 100 dele fibre og 400 g/ton polyacrylamidfibrer med molekylvægt 7 20 større end 10 .Cationic starch 0.4 parts per ml is added. 100 parts fiber and 400 g / ton molecular weight polyacrylamide 7 7 larger than 10.
Man opnår:You obtain:
Maskinhastighed : 502 m/mn 25 Samlet retention : 55,1%Machine speed: 502 m / mn 25 Total retention: 55.1%
Retention af fyldstoffer : 36,4% pH (i fødekuben ved begyndelsen af maskinen): 7,6Filler retention: 36.4% pH (in the feed cube at the beginning of the machine): 7.6
Eksempel 4 (ifølge opfindelsen) 30Example 4 (according to the invention) 30
Man går frem analogt med eksempel 3, idet man i stedet for polyacrylamid anvender aluminiumpolychlorid med formlen (II) i en mængde på 0,1 del udtrykt som A^O^ Pr* dele fibre.Analogous to Example 3 is used instead of using polyacrylamide aluminum polychloride of formula (II) in an amount of 0.1 part expressed as A ^ O ^ Pr * parts fiber.
Man opnår: 35 DK 170686 B1 10Obtains: 35 DK 170686 B1 10
Maskinens hastighed : 528 m/min.Machine speed: 528 m / min.
Samlet tilbageholdelse : 57%Total Retention: 57%
Tilbageholdelse af fyldstoffer : 40% * pH (i fødekuben ved begyndelsen af maskinen): 7,6 5 *Retention of fillers: 40% * pH (in the feed cube at the beginning of the machine): 7.6 5 *
Eksempel 5 (ikke ifølge opfindelsen) - Sammensætning ved fødekuben ved begyndelsen af maskinen: 10Example 5 (not according to the invention) - Composition at the feed cube at the beginning of the machine: 10
Fibrer: : bleget kemisk masse : 85 deleFibers:: bleached chemical pulp: 85 parts
Fyldstoffer : CaCO^ : 15 deleFillers: CaCO ^: 15 parts
Limning : Carboxylsyreanhydrid med fedtsyre kæde 0,2 dele.Bonding: Carboxylic anhydride with fatty acid chain 0.2 parts.
15 - Karakteristika for maskinens funktion:15 - Characteristics of machine operation:
Wirens effektive bredde: 2,6 m Gramvægt : 80 g/m2 20 Arten af papir : reproduktionspapirEffective width of the wire: 2.6 m Gram weight: 80 g / m2 20 Nature of paper: reproduction paper
Kridering ved påføring af amidon under presning.Crushing by application of amidone during pressing.
Man tilsætter kationisk stivelse 0,3 dele pr. 100 dele 25 fibre og polyacrylamid 300 g/ton fibre. Man opnår:Cationic starch 0.3 parts per ml is added. 100 parts 25 fibers and polyacrylamide 300 g / ton fibers. You obtain:
Maskinens hastighed : 495 m/min.Machine speed: 495 m / min.
Samlet tilbageholdelse : 73,5%Total Retention: 73.5%
Tilbageholdelse af fyldstoffer : 42,5% 30 pH (ved fødekuben ved begyndelse af maskinen): 7,8 *Retention of fillers: 42.5% 30 pH (at the feed cube at the beginning of the machine): 7.8 *
Eksempel 6 (ifølge opfindelsen)Example 6 (according to the invention)
Krkr
Man går frem analogt med eksempel 5, idet man dog indfø-35 rer mindre polyacrylamid, 100 g/ton i stedet for 300 g/ton, og man tilsætter et aluminiumpolychlorid med formlen (II), i en mængde på 0,1 del udtrykt som Al20g pr.Analogous to Example 5 is proceeded with, however, introducing less polyacrylamide, 100 g / ton instead of 300 g / ton, and adding an aluminum polychloride of formula (II) in an amount of 0.1 part expressed as Al 2 O
11 DK 170686 B1 100 dele fibre.11 DK 170686 B1 100 parts fibers.
Man opnår følgende resultater: 5 Maskinens hastighed : 501 m/min.The following results are obtained: 5 Machine speed: 501 m / min.
Samlet tilbageholdelse : 81%Total Retention: 81%
Tilbageholdelse af fyldstoffer : 48% pH (ved fødekuben ved begyndelsen af maskinen): 7,8 10 15 20 25 30 35Retention of fillers: 48% pH (at the feed cube at the beginning of the machine): 7.8 10 15 20 25 30 35
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8704003A FR2612961B1 (en) | 1987-03-23 | 1987-03-23 | PROCESS FOR THE MANUFACTURE OF PAPER BY ADDITION TO THE FIBROUS SUSPENSION OF A MINERAL FILLER, A GLUING AGENT, CATIONIC STARCH AND ALUMINUM POLYCHLORIDE |
| FR8704003 | 1987-03-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK154788D0 DK154788D0 (en) | 1988-03-22 |
| DK154788A DK154788A (en) | 1988-09-26 |
| DK170686B1 true DK170686B1 (en) | 1995-12-04 |
Family
ID=9349312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK154788A DK170686B1 (en) | 1987-03-23 | 1988-03-22 | Method of making paper |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0285487B1 (en) |
| JP (1) | JPS63256796A (en) |
| AT (1) | ATE73184T1 (en) |
| CA (1) | CA1312708C (en) |
| DE (1) | DE3868659D1 (en) |
| DK (1) | DK170686B1 (en) |
| ES (1) | ES2029522T3 (en) |
| FI (1) | FI94972C (en) |
| FR (1) | FR2612961B1 (en) |
| GR (1) | GR3004804T3 (en) |
| IE (1) | IE60052B1 (en) |
| NO (1) | NO173887C (en) |
| PT (1) | PT87044B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02293493A (en) * | 1989-04-28 | 1990-12-04 | Arakawa Chem Ind Co Ltd | Sizing agent for ketene dimer-based paper making |
| DK0512038T3 (en) * | 1990-01-22 | 1995-07-24 | Exxon Chemical Patents Inc | Foam reduction in papermaking |
| TR24973A (en) * | 1991-02-05 | 1992-09-01 | Exxon Chemical Patents Inc | REDUCING FOAMING IN PAPER MANUFACTURING |
| FR2678961B1 (en) * | 1991-07-12 | 1993-10-15 | Atochem | NEW PROCESS FOR THE MANUFACTURE OF PAPER AND THE PAPER THUS OBTAINED. |
| KR100256636B1 (en) * | 1994-04-12 | 2000-05-15 | 김충섭 | Manufacturing method for improving the amount of fillers and reinforcing the strength of scott internal interrity in paper |
| IT1271003B (en) * | 1994-09-08 | 1997-05-26 | Ausimont Spa | HIGH MECHANICAL RESISTANCE PAPER AND CARDBOARD PRODUCTION PROCESS |
| FR2732368B1 (en) * | 1995-03-31 | 1997-06-06 | Roquette Freres | NEW PAPERMAKING PROCESS |
| FR2743810B1 (en) | 1996-01-23 | 1998-04-10 | Roquette Freres | MODIFIED CATIONIC POLYSACCHARIDES, BONDING COMPOSITIONS CONTAINING THEM AND METHODS FOR BONDING PLANAR STRUCTURES USING THE SAME |
| RU2546721C2 (en) * | 2012-10-12 | 2015-04-10 | ЗАО (р) "Туринский целлюлозно-бумажный завод" | Method of production of paper pulp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374118A (en) * | 1976-12-09 | 1978-07-01 | Toa Gosei Chem Ind | Additives for paper making |
| FR2418297A1 (en) * | 1978-02-27 | 1979-09-21 | Ugine Kuhlmann | IMPROVEMENT OF PAPER AND BOARD MANUFACTURING PROCESSES |
| JPS59199900A (en) * | 1983-04-18 | 1984-11-13 | 三菱製紙株式会社 | Neutral paper |
| IT1163643B (en) * | 1983-07-01 | 1987-04-08 | Prodeco Spa | PROCEDURE FOR PAPER COLLATION, IN PARTICULAR IN THE PRESENCE OF A SENSITIVE CHARGE IN THE ACID ENVIRONMENT |
| JPS60185899A (en) * | 1984-03-05 | 1985-09-21 | 三菱製紙株式会社 | Neutral paper |
| SE8405260L (en) * | 1984-10-22 | 1986-04-23 | Eka Ab | HYDROPHOBING AGENTS FOR ORGANIC FIBERS, Separate CELLULOS FIBERS, SET TO MAKE THIS AGENT AND THE USE OF THE MELD HYDROPHOBING AGENT |
| ATE40429T1 (en) * | 1985-04-13 | 1989-02-15 | Chem Fab Bruehl Oppermann Gmbh | PAPER SIZES AND THEIR USE. |
-
1987
- 1987-03-23 FR FR8704003A patent/FR2612961B1/en not_active Expired
-
1988
- 1988-03-08 NO NO881029A patent/NO173887C/en unknown
- 1988-03-15 EP EP19880400618 patent/EP0285487B1/en not_active Expired - Lifetime
- 1988-03-15 AT AT88400618T patent/ATE73184T1/en active
- 1988-03-15 ES ES198888400618T patent/ES2029522T3/en not_active Expired - Lifetime
- 1988-03-15 DE DE8888400618T patent/DE3868659D1/en not_active Revoked
- 1988-03-22 DK DK154788A patent/DK170686B1/en not_active IP Right Cessation
- 1988-03-22 PT PT87044A patent/PT87044B/en not_active IP Right Cessation
- 1988-03-22 FI FI881369A patent/FI94972C/en not_active IP Right Cessation
- 1988-03-22 IE IE84288A patent/IE60052B1/en not_active IP Right Cessation
- 1988-03-22 CA CA000562131A patent/CA1312708C/en not_active Expired - Fee Related
- 1988-03-23 JP JP63069224A patent/JPS63256796A/en active Pending
-
1992
- 1992-06-04 GR GR920401145T patent/GR3004804T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK154788A (en) | 1988-09-26 |
| NO173887C (en) | 1994-02-16 |
| NO881029D0 (en) | 1988-03-08 |
| ES2029522T3 (en) | 1992-08-16 |
| IE60052B1 (en) | 1994-05-18 |
| FR2612961A1 (en) | 1988-09-30 |
| EP0285487B1 (en) | 1992-03-04 |
| DE3868659D1 (en) | 1992-04-09 |
| FI94972C (en) | 1995-11-27 |
| IE880842L (en) | 1988-09-23 |
| JPS63256796A (en) | 1988-10-24 |
| ATE73184T1 (en) | 1992-03-15 |
| FI94972B (en) | 1995-08-15 |
| EP0285487A1 (en) | 1988-10-05 |
| PT87044A (en) | 1988-04-01 |
| PT87044B (en) | 1992-07-31 |
| NO881029L (en) | 1988-09-26 |
| DK154788D0 (en) | 1988-03-22 |
| FI881369A (en) | 1988-09-24 |
| FI881369A0 (en) | 1988-03-22 |
| CA1312708C (en) | 1993-01-19 |
| FR2612961B1 (en) | 1989-10-13 |
| GR3004804T3 (en) | 1993-04-28 |
| NO173887B (en) | 1993-11-08 |
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