NO173887B - PAPER MAKING PROCEDURE - Google Patents
PAPER MAKING PROCEDURE Download PDFInfo
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- NO173887B NO173887B NO88881029A NO881029A NO173887B NO 173887 B NO173887 B NO 173887B NO 88881029 A NO88881029 A NO 88881029A NO 881029 A NO881029 A NO 881029A NO 173887 B NO173887 B NO 173887B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 11
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 11
- 239000008107 starch Substances 0.000 claims abstract description 11
- 235000019698 starch Nutrition 0.000 claims abstract description 11
- 125000002091 cationic group Chemical group 0.000 claims abstract description 9
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229920002873 Polyethylenimine Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 239000012764 mineral filler Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000004513 sizing Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 29
- 239000000047 product Substances 0.000 description 24
- 230000014759 maintenance of location Effects 0.000 description 14
- 239000000945 filler Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- -1 alkyl ketene Chemical compound 0.000 description 3
- 239000007900 aqueous suspension Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- DZUHNVFSJJSSOM-UHFFFAOYSA-K aluminum chlorosulfate Chemical compound [Al+3].[O-]S(Cl)(=O)=O.[O-]S(Cl)(=O)=O.[O-]S(Cl)(=O)=O DZUHNVFSJJSSOM-UHFFFAOYSA-K 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
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
- 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
-
- 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)
- 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)
- Electronic Switches (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Foreliggende oppfinnelse angår en forbedret fremgangsmåte for fremstilling av papir. The present invention relates to an improved method for producing paper.
Råpapirmasse, i det vesentlige bestående av cellulosefibre, omgjøres til en fortynnet vandig suspensjon som bringes til kassen i papirmaskinen der den fordeles på en filtreringsduk eller wire der papirarket tildannes. Papirarket blir så presset og tørket. Egenskapene og kvalitetene til papiret som oppnås bestemmes spesielt ved driftsbetingelsene på papirmaskinen, råmassen, de forskjellige additiver som tilsettes til suspensjonen før dannelse av arket og også produktene som påføres på papirarket efter wiren. Raw paper pulp, essentially consisting of cellulose fibres, is converted into a diluted aqueous suspension which is brought to the box in the paper machine where it is distributed on a filter cloth or wire where the paper sheet is formed. The paper sheet is then pressed and dried. The properties and qualities of the paper obtained are determined in particular by the operating conditions of the paper machine, the raw stock, the various additives added to the suspension before forming the sheet and also the products applied to the paper sheet after the wire.
Foreliggende oppfinnelse angår mer spesielt tilsetningen av produkter som tilsettes før tildannelse av arket. The present invention relates more particularly to the addition of products which are added before forming the sheet.
Således tilsettes uorganiske fyllstoffer som kalsiumkarbonat og titandioksyd, og så videre. Disse fyllstoffer gjør papirarket opakt og letter derved betrykning og beskrivning. Et limmiddel tilsettes også for å gjøre arket motstandsdyktig mot væsker, det vil si at det limte papir kan benyttes for skriving og trykking. Det er også nødvendig å tilsette et retensjonssystem som precipiterer limet på cellulosefibrene og som også muliggjør at uorganiske fyllstoffer holdes i papirarket. Retensjonssystemet er hyppig en blanding av flere produkter. Produkter for å forbedre de mekaniske egenskaper i papiret, farvestoffer og lignende, tilsettes også. Thus, inorganic fillers such as calcium carbonate and titanium dioxide are added, and so on. These fillers make the paper sheet opaque and thereby facilitate printing and description. An adhesive is also added to make the sheet resistant to liquids, which means that the glued paper can be used for writing and printing. It is also necessary to add a retention system which precipitates the glue on the cellulose fibers and which also enables inorganic fillers to be retained in the paper sheet. The retention system is often a mixture of several products. Products to improve the mechanical properties of the paper, dyes and the like, are also added.
Alle disse produkter som tilsettes har ikke noen godt spesifisert virkning med henblikk på ett enkelt karakte-ristikum for papiret, men virker mer eller mindre felles og i forbindelse med flere parametre. Når syresensitive fyllstoffer som for eksempel kalsiumkarbonat benyttes, er det viktig at limet og retensjonssystemet ikke gir noen sur vandig suspensjon som kan forårsake en dekomponering av karbonatet og også gi skum. All these products that are added do not have a well-specified effect with regard to a single characteristic of the paper, but work more or less in common and in connection with several parameters. When acid-sensitive fillers such as calcium carbonate are used, it is important that the adhesive and the retention system do not produce an acidic aqueous suspension that can cause a decomposition of the carbonate and also produce foam.
Produkter og spesielt kalsiumkarbonat blir hyppig avsatt på papirarket. En andel av det belagte papir kan også resirku-leres til inngangen til fremstillingsprosessen før dannelse av arket for derved å bringe karbonatet i suspensjon før papirmaskinen selv om fyllstoffer forskjellige fra karbonat er innført i suspensjonen. Av denne grunn er det foretrukket å benytte lim og retensjonssystemer som ikke fører til sur suspensjon, dette kalles her liming i nøytralt medium. Products and especially calcium carbonate are frequently deposited on the paper sheet. A portion of the coated paper can also be recycled to the entrance to the manufacturing process before forming the sheet to thereby bring the carbonate into suspension before the paper machine even if fillers other than carbonate are introduced into the suspension. For this reason, it is preferred to use glue and retention systems that do not lead to an acidic suspension, this is called gluing in a neutral medium.
Artikkelen "Papermaking Additives", s. 803 til 825, vol. 16, i 3. utgave av "KIRK-OTHMER", ed. John wiley 1981, beskriver lim av typen dimere alkylketener som kan benyttes i nøytralt medium, men spesifiserer ikke retensjonssystemet. The article "Papermaking Additives", pp. 803 to 825, vol. 16, in the 3rd edition of "KIRK-OTHMER", ed. John wiley 1981, describes adhesives of the dimeric alkyl ketene type which can be used in a neutral medium, but does not specify the retention system.
Patentsøknaden under den japanske prioritet 85 JP 031 519 henviser til liming i nøytralt medium. Fyllstoffet er kalsiumkarbonat, og aluminiumpolyklorid og et høymolekyl-vektsretensjonsmiddel tilsettes. The patent application under the Japanese priority 85 JP 031 519 refers to gluing in a neutral medium. The filler is calcium carbonate, and aluminum polychloride and a high molecular weight retention agent are added.
GB-PS 2 015 614 beskriver prosesser for fremstilling av papir og papp der et basisk aluminiumpolyklorsulfat settes til suspensjonen før dannelse av papirarket. Imidlertid der enhver form for liming utelates, eller kolofonium tilsettes, og det er kjent at kolofonium må tilsettes i surt medium, se KIRK-OTHMER supra, s. 810. GB-PS 2 015 614 describes processes for the production of paper and cardboard in which a basic aluminum polychlorosulphate is added to the suspension before forming the paper sheet. However, where any kind of sizing is omitted, or rosin is added, and it is known that rosin must be added in an acidic medium, see KIRK-OTHMER supra, p. 810.
I henhold til dette har foreliggende oppfinnelse til hensikt å forbedre den kjente teknikk og angår derfor en fremgangsmåte for fremstilling av papir der fremgangsmåten karakteri-seres ved at man til suspensjonen inneholdende cellulosefibrene, før arkdannelsen, setter: In accordance with this, the present invention aims to improve the known technique and therefore relates to a method for the production of paper where the method is characterized by adding to the suspension containing the cellulose fibers, before the sheet formation:
a) et mineralsk fyllstoff, a) a mineral filler,
b) et lim, valgt blant dimere alkylketener og/eller deres derivater og/eller karboksylsyreanhydrider av b) an adhesive, chosen from dimeric alkylketenes and/or their derivatives and/or carboxylic anhydrides of
fettsyrer , fatty acids,
c) en kationisk stivelse og c) a cationic starch and
d) aluminiumpolyklorid, eventuelt, d) aluminum polychloride, if applicable,
e) minst ett produkt valgt blant polyakrylamider, polyetylenimin, karboksymetylcellulose, urinstoff-formaldehydharpikser, melamin- formaldehydharpikser, aminopolyamid epiklorhydrinharpikser og polyamidepi-klorhydrinharpikser. e) at least one product selected from polyacrylamides, polyethyleneimine, carboxymethylcellulose, urea-formaldehyde resins, melamine-formaldehyde resins, aminopolyamide epichlorohydrin resins and polyamide epichlorohydrin resins.
Suspensjonen som inneholder cellulosefibrene kan være rå-eller bleket masse, eller en blanding derav, eller en masse som allerede inneholder additiver. The suspension containing the cellulose fibers can be raw or bleached pulp, or a mixture thereof, or a pulp that already contains additives.
Det uorganiske fyllstoff kan være ett eller flere produkter av en hvilken som helst type, fortrinnsvis valgt blant leire, kalsiumkarbonat, silisiumdioksyd, hydratisert aluminiumoksyd, talkum, titandioksyd og lignende. The inorganic filler can be one or more products of any type, preferably selected from clay, calcium carbonate, silicon dioxide, hydrated alumina, talc, titanium dioxide and the like.
Disse produkter innføres i suspensjonen i finoppdelt form eller i form av en pasta eller en oppløsning. Det er foretrukket å benytte kalsiumkarbonat. Kalsiumkarbonat kan innføres i en hvilken som helst mengde, denne er oftest 40 deler pr. 100 deler cellulosefibre og fortrinnsvis mellom 10 og 25 deler. Denne mengde tar ikke med i betraktning de fyllstoffer som er tilstede i papiret som er resirkulert til innløpet av fremstillingsprosessen, i suspensjon. These products are introduced into the suspension in finely divided form or in the form of a paste or a solution. It is preferred to use calcium carbonate. Calcium carbonate can be introduced in any quantity, this is usually 40 parts per 100 parts cellulose fibers and preferably between 10 and 25 parts. This quantity does not take into account the fillers present in the paper recycled to the inlet of the manufacturing process, in suspension.
Selv om det er mulig å benytte et hvilket som helst lim, er det foretrukket å benytte et som anvendes i nøytralt medium. Although it is possible to use any glue, it is preferred to use one that is used in a neutral medium.
Fordelaktig kan limet være en blanding av ett eller flere produkter valgt blant dimere alkylketener og derivater derav, fluorerte fosfater, anhydrider av fettkjedekarboksylsyrer, visse polyuretaner samt styren/maleinsyreanhydridkopolymerer. Advantageously, the adhesive can be a mixture of one or more products selected from dimeric alkylketenes and derivatives thereof, fluorinated phosphates, anhydrides of fatty chain carboxylic acids, certain polyurethanes and styrene/maleic anhydride copolymers.
Det er foretrukket å benytte dimere alkylketener og karboksylsyreanhydrider. Mengden som benyttes avhenger av de ønskede egenskaper i papiret. Fordelaktig er mengden mindre enn 10 deler pr. 100 deler cellulosefibre og fortrinnsvis mellom 0,1 og 2 deler. It is preferred to use dimeric alkylketenes and carboxylic acid anhydrides. The quantity used depends on the desired properties of the paper. Advantageously, the amount is less than 10 parts per 100 parts cellulose fibers and preferably between 0.1 and 2 parts.
Den kationiske stivelse er en blanding av ett eller flere produkter som markedsføres under det generiske navn kationisk stivelse. Disse produkter er f.eks. som er beskrevet i "KIRK-OTHMER", 3. utgave, vol. 21, s. 503. Mengden er fortrinnsvis mindre enn 5 deler pr. 100 deler cellulosefibre, aller helst mindre enn 2 deler. The cationic starch is a mixture of one or more products marketed under the generic name cationic starch. These products are e.g. which is described in "KIRK-OTHMER", 3rd edition, vol. 21, p. 503. The quantity is preferably less than 5 parts per 100 parts cellulose fibers, preferably less than 2 parts.
Aluminiumpolyklorid angir produkter som vanligvis henvises til som "aluminiumpolyklorid", "basisk aluminiumpolyklorid" og "basisk aluminiumpolyklorsulfat", og er fortrinnsvis ett eller flere av de følgende produkter: Aluminum polychloride refers to products commonly referred to as "aluminum polychloride", "basic aluminum polychloride" and "basic aluminum polychlorine sulphate", and is preferably one or more of the following products:
1. Et salt med formelen 1. A salt with the formula
der n har en hvilken som helst verdi og 3n-m er positiv, idet m og n er positive hele tall; hvorved det er mulig at saltet i tillegg inneholder et polyvalent anion Y valgt blant svovel-, fosfor-, polyfosfor-, silisium-, krom-, karboksyl- og sulfonsyrer, og idet molforholdet Y/Al fortrinnsvis er mellom 0,015 og 0,4; where n has any value and 3n-m is positive, m and n being positive integers; whereby it is possible that the salt additionally contains a polyvalent anion Y selected from sulphurous, phosphoric, polyphosphoric, silicic, chromic, carboxylic and sulphonic acids, and the molar ratio Y/Al preferably being between 0.015 and 0.4;
2. Et salt med formelen: 2. A salt with the formula:
der k, m og n er hele positive tall, 3n > m + 2k, basisiteten m/3n er mellom 0,3 og 0,7 og k/n er lik 0,01 where k, m and n are positive whole numbers, 3n > m + 2k, the basicity m/3n is between 0.3 and 0.7 and k/n is equal to 0.01
til 0,3. Dette produkt kan fremstilles i henhold til det som beskrives i US-PS 3 929 666; to 0.3. This product can be manufactured according to what is described in US-PS 3,929,666;
3. Et salt med formelen: 3. A salt with the formula:
der (3n-m-2p)/3n = 0,4 til 0,7; p = 0,04 til 0,25 n; m/p = 8 til 35; k, m, n og p er hele tall og z er minst 1. Dette produkt er beskrevet i GB-PS 2 128 977; og where (3n-m-2p)/3n = 0.4 to 0.7; p = 0.04 to 0.25 n; m/p = 8 to 35; k, m, n and p are whole numbers and z is at least 1. This product is described in GB-PS 2 128 977; and
4. Basisk aluminiumklorsulfat med formelen: 4. Basic aluminum chlorosulphate with the formula:
der basisiteten eller molforholdet m/3n x 100 er mellom ca. 40 og 65$ og som har en Al-ekvivalent: Cl-ekvivalent på mellom 2,8 og 5, en tilsynelatende molekylmasse AM, målt ved konvensjonell lysspredning, og tilsynelatende hydrodynamiske diametre $Z og målt ved kvasi-elastisk lysspredning, på følgende verdier: where the basicity or molar ratio m/3n x 100 is between approx. 40 and 65$ and having an Al equivalent: Cl equivalent of between 2.8 and 5, an apparent molecular mass AM, measured by conventional light scattering, and apparent hydrodynamic diameters $Z and measured by quasi-elastic light scattering, of the following values :
Dette produkt er beskrevet i FR-PS 2 584 699. This product is described in FR-PS 2 584 699.
Mengden aluminiumpolyklorid, uttrykt som AI2O3, som benyttes, er fortrinnsvis mindre enn 0,5 deler pr. 100 deler cellulosefibre og fortrinnsvis mellom 0,05 og 0,2 deler. The amount of aluminum polychloride, expressed as AI2O3, which is used is preferably less than 0.5 parts per 100 parts cellulose fibers and preferably between 0.05 and 0.2 parts.
Produktene a) og b) tilsettes separat eller som en blanding, eller de blandes delvis i en hvilken som helst rekkefølge. Imidlertid er det foretrukket å tilsette aluminiumpolykloridet efter det andre. Det er også foretrukket at aluminiumpolykloridet tilsettes på et punkt så nær kassen som mulig. Den kationiske stivelse og aluminiumpolyklorid er ikke beskrevet som et retensjonssystem, som beskrevet ovenfor virker alle produkter som settes til suspensjonen før dannelse av arket, sammen. Foreliggende oppfinnelse består i å sette produktene a) til d) og eventuelt e) til suspensjonen og det er funnet at den felles anvendelse av disse produkter har mange fordeler. Foreliggende oppfinnelse er spesielt brukbar for fremstilling av papir limt i nøytralt medium. Fremgangsmåten ifølge oppfinnelsen muliggjør at papiret chargeres med syresensitive produkter som kalsiumkarbonat. The products a) and b) are added separately or as a mixture, or they are partially mixed in any order. However, it is preferred to add the aluminum polychloride one after the other. It is also preferred that the aluminum polychloride is added at a point as close to the case as possible. The cationic starch and aluminum polychloride is not described as a retention system, as described above, all products added to the suspension before forming the sheet work together. The present invention consists in adding the products a) to d) and possibly e) to the suspension and it has been found that the joint use of these products has many advantages. The present invention is particularly useful for the production of paper glued in a neutral medium. The method according to the invention enables the paper to be charged with acid-sensitive products such as calcium carbonate.
En annen fordel ved oppfinnelsen er en god retensjon av fyllstoffene og som et resultat en stor reduksjon av suspenderte stoffer i vannet som gjenvinnes ved papir-fremstillingen. Another advantage of the invention is a good retention of the fillers and, as a result, a large reduction of suspended substances in the water that is recovered during the paper manufacture.
En annen fordel ifølge oppfinnelsen er den større produk-tivitet på papirmaskinen og bedre indre kohesjon. Alle disse fordeler vil sees i eksemplene. Another advantage according to the invention is the greater productivity of the paper machine and better internal cohesion. All these advantages will be seen in the examples.
Andre produkter som farvestoffer og midler for mekanisk styrking av arket kan også settes til suspensjonen av cellulosefibre før dannelse av arket og i tillegg til produktene a) til d) og eventuelt e). Other products such as dyes and agents for mechanical strengthening of the sheet can also be added to the suspension of cellulose fibers before forming the sheet and in addition to the products a) to d) and possibly e).
EKSEMPEL 1 (sammenligningseksempel) EXAMPLE 1 (comparative example)
Fremstilling av et papir for betrykning og beskrivning, beregnet til belegning. Production of a paper for printing and description, intended for coating.
Blandingen av vandig suspensjon før tildanning av arket, her kalt "kassesammensetning": The mixture of aqueous suspension before forming the sheet, here called "case composition":
Driftsbetingelser på maskinen: Operating conditions of the machine:
Wiredimensjon, effektiv bredde 3,5 m Wire dimension, effective width 3.5 m
Basisvekt for papiret: 180 g/m<2>Basic weight of the paper: 180 g/m<2>
Type papir: belegningsbasispapir, fulgt av overflatepåføring av dekstrinert eller enzymbehandlet eller oksydert stivelse ved påpressing. Type of paper: coating base paper, followed by surface application of dextrinized or enzyme-treated or oxidized starch by pressing.
Kationisk stivelse (0,3 deler pr. 100 deler fibre) og 420 g/tonn fibre av poly(etylenimin) tilsettes. Cationic starch (0.3 parts per 100 parts fibers) and 420 g/tonne fibers of poly(ethyleneimine) are added.
Man oppnår en produksjonshastighet på 207 m/min., 77$ retensjon av fyllstoffene og tilsammen 92% total retensjon. A production speed of 207 m/min., 77% retention of the fillers and a total of 92% total retention is achieved.
Den indre kohesjon, målt ved den såkalte "pendulum"-appa-ratur, er 87. Pendulum-apparaturen som benyttes er "Internal Bond Impact Tester Model B", levert av GCÅ/Precision Scientific, 3737 W. Cortland Street, Chicago, USA The internal cohesion, measured by the so-called "pendulum" apparatus, is 87. The pendulum apparatus used is the "Internal Bond Impact Tester Model B", supplied by GCÅ/Precision Scientific, 3737 W. Cortland Street, Chicago, USA
pH-verdien for suspensjonen under fremstillingen av papirarket er 7,4. The pH value of the suspension during the production of the paper sheet is 7.4.
Suspendert materiale, SM, i det rensede bakvann er 170 mg/l. Suspended matter, SM, in the treated backwater is 170 mg/l.
EKSEMPEL 2 (ifølge oppfinnelsen) EXAMPLE 2 (according to the invention)
Prosedyren er som i eksempel 1, men i stedet for poly(etylen-imin) tilsettes et aluminiumpolyklorid med formel (II) i en mengde av 0,1 deler, uttrykt som AI2O3, pr. 100 deler cellulosef ibre. The procedure is as in example 1, but instead of poly(ethylene imine) an aluminum polychloride of formula (II) is added in an amount of 0.1 parts, expressed as AI2O3, per 100 parts cellulose fiber.
Man oppnår en produksjonshastighet på 221 m/min., 86% retensjon av fyllstoffer og 95,5$ total retensjon. A production speed of 221 m/min., 86% retention of fillers and 95.5% total retention is achieved.
Den indre kohesjon er 110, SM i renset bakvann er 100 mg/l og pH-verdien i kassen er 7,3. The internal cohesion is 110, SM in purified tailwater is 100 mg/l and the pH value in the box is 7.3.
På tross av sin sure art, holder aluminiumpolykloridet mediet innen et pH-område som er kompatibelt med bruken av kalsiumkarbonat. Dette medfører en gevinst i den totale retensjon på 3,5 poeng, og i retensjon av fyllstoffer på 9 poeng. Maskinhastigheten kunne økes med 756. Innholdet av suspendert materiale i vannet under wiren ble sterkt redusert. Man bemerket en gevinst i den indre kohesjon. Despite its acidic nature, the aluminum polychloride maintains the medium within a pH range compatible with the use of calcium carbonate. This results in a gain in total retention of 3.5 points, and in retention of fillers of 9 points. The machine speed could be increased by 756. The content of suspended material in the water under the wire was greatly reduced. A gain in internal cohesion was noted.
EKSEMPEL 3 (sammenligningseksempel) EXAMPLE 3 (comparative example)
Kassesammensetning: Case composition:
Maskinens driftsbetingelser: Machine operating conditions:
Dobbelt wire, effektiv bredde 2,7 m. Double wire, effective width 2.7 m.
Basisvekt: 60 g/m2 . Basis weight: 60 g/m2.
Type papir: offset-trykking fulgt av overflatepåføring av stivelse ved pressing. Type of paper: offset printing followed by surface application of starch by pressing.
0,4 deler kationisk stivelse pr. 100 deler fibre samt 400 g/tonn fibre polyakrylamid med molekylvekt over IO<7> tilsettes . 0.4 parts cationic starch per 100 parts of fibers and 400 g/tonne of polyacrylamide fibers with a molecular weight above 10<7> are added.
Man oppnår følgende resultat: The following result is obtained:
EKSEMPEL 4 (ifølge oppfinnelsen) EXAMPLE 4 (according to the invention)
Prosedyren er som i eksempel 3, men i stedet for polyakrylamid benyttes aluminiumpolyklorid med formel (II) i en mengde av 0,1 deler, uttrykt som AI2O3, pr. 100 deler fibre. The procedure is as in example 3, but instead of polyacrylamide, aluminum polychloride of formula (II) is used in an amount of 0.1 parts, expressed as AI2O3, per 100 parts fibers.
Følgende resultater oppnås: The following results are obtained:
EKSEMPEL 5 (sammenligningseksempel) EXAMPLE 5 (comparative example)
Kassesammensetning: Case composition:
Maskinens driftsbetingelser: Machine operating conditions:
Belegning ved overflatepåføring av stivelse ved pressing. Coating by surface application of starch by pressing.
0,3 deler kationisk stivelse pr. 100 deler fibre og 300 g polyakrylamid/tonn fibre tilsettes. 0.3 parts cationic starch per 100 parts fibers and 300 g polyacrylamide/tonne fibers are added.
Man oppnår følgende resultater: The following results are achieved:
EKSEMPEL 6 (ifølge oppfinnelsen) EXAMPLE 6 (according to the invention)
Prosedyren er som i eksempel 5, men det innføres mindre polyakrylamid, 100 g/tonn i stedet for 300 g/tonn, og et aluminiumpolyklorid med formel (II) tilsettes i en andel på 0,1 deler, uttrykt som AI2O3, pr. 100 deler fibre. The procedure is as in example 5, but less polyacrylamide is introduced, 100 g/tonne instead of 300 g/tonne, and an aluminum polychloride of formula (II) is added in a proportion of 0.1 parts, expressed as AI2O3, per 100 parts fibers.
Man oppnår følgende resultater: The following results are achieved:
Claims (7)
Applications Claiming Priority (1)
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 |
Publications (4)
Publication Number | Publication Date |
---|---|
NO881029D0 NO881029D0 (en) | 1988-03-08 |
NO881029L NO881029L (en) | 1988-09-26 |
NO173887B true NO173887B (en) | 1993-11-08 |
NO173887C NO173887C (en) | 1994-02-16 |
Family
ID=9349312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO881029A NO173887C (en) | 1987-03-23 | 1988-03-08 | Procedure for 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 |
EP0512038B1 (en) * | 1990-01-22 | 1995-02-22 | Exxon Chemical Patents Inc. | Reducing foaming in paper manufacture |
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 ES ES198888400618T patent/ES2029522T3/en not_active Expired - Lifetime
- 1988-03-15 DE DE8888400618T patent/DE3868659D1/en not_active Revoked
- 1988-03-15 AT AT88400618T patent/ATE73184T1/en active
- 1988-03-15 EP EP19880400618 patent/EP0285487B1/en not_active Expired - Lifetime
- 1988-03-22 CA CA000562131A patent/CA1312708C/en not_active Expired - Fee Related
- 1988-03-22 DK DK154788A patent/DK170686B1/en not_active IP Right Cessation
- 1988-03-22 FI FI881369A patent/FI94972C/en not_active IP Right Cessation
- 1988-03-22 PT PT87044A patent/PT87044B/en not_active IP Right Cessation
- 1988-03-22 IE IE84288A patent/IE60052B1/en not_active IP Right Cessation
- 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 |
---|---|
DK154788D0 (en) | 1988-03-22 |
FR2612961A1 (en) | 1988-09-30 |
ES2029522T3 (en) | 1992-08-16 |
FI881369A (en) | 1988-09-24 |
ATE73184T1 (en) | 1992-03-15 |
FI94972B (en) | 1995-08-15 |
GR3004804T3 (en) | 1993-04-28 |
DK170686B1 (en) | 1995-12-04 |
PT87044B (en) | 1992-07-31 |
EP0285487A1 (en) | 1988-10-05 |
PT87044A (en) | 1988-04-01 |
IE880842L (en) | 1988-09-23 |
IE60052B1 (en) | 1994-05-18 |
FR2612961B1 (en) | 1989-10-13 |
EP0285487B1 (en) | 1992-03-04 |
NO881029L (en) | 1988-09-26 |
DK154788A (en) | 1988-09-26 |
NO173887C (en) | 1994-02-16 |
NO881029D0 (en) | 1988-03-08 |
FI881369A0 (en) | 1988-03-22 |
FI94972C (en) | 1995-11-27 |
JPS63256796A (en) | 1988-10-24 |
DE3868659D1 (en) | 1992-04-09 |
CA1312708C (en) | 1993-01-19 |
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