EP0763159B2 - Procede de fabrication de papier - Google Patents
Procede de fabrication de papier Download PDFInfo
- Publication number
- EP0763159B2 EP0763159B2 EP96910068A EP96910068A EP0763159B2 EP 0763159 B2 EP0763159 B2 EP 0763159B2 EP 96910068 A EP96910068 A EP 96910068A EP 96910068 A EP96910068 A EP 96910068A EP 0763159 B2 EP0763159 B2 EP 0763159B2
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- EP
- European Patent Office
- Prior art keywords
- paper
- starch
- fibrous composition
- approximately
- process according
- 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.)
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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
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
- D21H23/18—Addition at a location where shear forces are avoided before sheet-forming, e.g. after pulp beating or refining
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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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
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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
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
Definitions
- patent EP 0 276 200 in no way discloses the retention rate that can be obtained with regard to the cationic starch used (product "CATO 102" having a fixed nitrogen content of 0.30% approximately), nor the physical characteristics of the paper resulting from the implementation of such associations cationic polymer / anionic aluminum compound ".
- anionic trash catchers PEI type products (polyethylene imine) or p-DADMAC (poly di alkyl dimethyl ammonium chloride) are more effective than a polychloride aluminum (the chemical composition of which is not specified), which is presented as "practically ineffective in terms of retention. "
- Patent FR 2,289,674 describes the specific implementation, in media highly concentrated in sulfate alumina, amphoteric starches of the sulfo-succinate type with reduced cationicity (degree of substitution or "DS" announced 0.03 corresponding to a fixed nitrogen level of less than 0.30% relative to the dry weight of the starch) and this, in view improve the retention of titanium dioxide pigments.
- the physical characteristics of the paper expressed by the MULLEN index alone, can be improved but in a very limited way (MULLEN max. obtained: 1.59).
- Patent EP 257,338 describes the specific use of amphoteric starches of the phosphate type, in particular waxy base, cationicity qualifying as “low” or “medium” (maximum DS of 0.08 corresponding to a rate fixed nitrogen less than 0.7% / dry weight of starch). This document considers the interest of such amphoteric starches only for the sole purpose of improving the drip performance of the paper machine.
- Patent application WO 81/00147 describes the preparation, by a complicated process, of an amphoteric mucus based on cationic starch of reduced cationicity and a CMC type polymer, intended to coat a structure filler / fiber.
- patent EP 41,056 claiming the association between cationic starch and colloidal silicic acid. Such an association has been improved over time as it follows of the description of patent application WO 86/00100 (anionic agent of the aluminum silicate or silicic acid type modified by aluminum), of patent EP 348,366 (anionic agent of the polymeric silicic acid type having a specific surface area) and of patent EP 490,425 (cationic agent containing from 0.05 to 0.5% by weight of aluminum).
- patents EP 349,366 and 490,425 are mainly focused on the "draining” and / or “retention” and do not really address the study of the physical characteristics of the paper.
- the present invention relates to a process for manufacturing paper from a fibrous composition characterized in that said fibrous composition is brought into contact, simultaneously or not, with at least one cationic starch having a fixed nitrogen level greater than 0.95%, expressed on the dry weight starch and with at least one polyaluminium compound.
- the cationic starches used in accordance with the invention can be obtained by any technique current or future, in aqueous medium, in solvent medium or in dry phase, capable of allowing one or more group (s) nitrogen (s) of an electropositive nature to be fixed on a starch or a mixture of starches of all kinds and origins when the nitrogen level thus fixed is greater than 0.95% by weight of dry starch.
- the cationic starches used in the process according to the invention can in particular be prepared by one any of the cationization techniques, in particular dry phase cationization, described in the patents FR 2,434,821, FR 2,477,159, EP 233,336, EP 303,039, EP 333,292, EP 406,837, US 4,332,935 and US 429,444.
- the cationic starches used according to the invention can moreover be of a "polycationic" nature. such as those described in the aforementioned patents EP 406,837 and US 429,444 since said starches have, in fine, a fixed nitrogen level greater than 0.95% on the dry weight of starch.
- starches having a fixed nitrogen level from about 1.0% to about 3.0%, preferably from about 1.0% to about 2.5%, and even more preferably from 1% to 1.6%, based on the dry weight of starch.
- Said starches can be based on potato, potato with high amylopectin content (waxy starch), corn, wheat, high amylopectin corn (waxy corn), corn high amylose, rice, pea or cassava content, based on cuts or fractions that can be made or obtained such as amylose, amylopectin, particle size sections known to those skilled in the art under the terms of starch wheat "A” and wheat starch “B", and any mixtures of at least any two of the above products.
- the cationic starch which can be used for the production of paper according to the invention can in particular be consisting of a mixture of at least one cationic tuber starch, in particular potato starch cationic and at least one cationic cereal starch, in particular cationic corn or wheat.
- the cationic starches used in the papermaking process according to the invention which have a fixed nitrogen level greater than 0.95% on the dry weight of starch, can simultaneously, previously or after cationization, have been subjected to any chemical and / or physical treatment.
- the chemical treatment may in particular consist of one or other of the known crosslinking techniques, oxidation, alkaline treatment, acid and / or enzymatic hydrolysis, esterification or plasticization.
- crosslinking technique is meant in particular any process involving an agent such as acid adipic acid or one of its derivatives, a halohydrin (for example epichlorohydrin), a trimetaphosphate (for example sodium), phosphorus oxychloride or a resin (for example based on formalin).
- agent such as acid adipic acid or one of its derivatives, a halohydrin (for example epichlorohydrin), a trimetaphosphate (for example sodium), phosphorus oxychloride or a resin (for example based on formalin).
- oxidation technique is understood to mean in particular any non-degradative oxidation process making it possible to substitute at least one OH group for the starch with a COOH group.
- esterification techniques means in particular any process which makes it possible to substitute starch (already cationized or not), at least in one place, by acetate, phosphate, succinate, sulfo-succinate, alkenyl-succinate groups, sulfate, maleate, propionate or carboxyl.
- the starches used in the papermaking process according to the invention can be consist of amphoteric starches, i.e. products which are both cationic (fixed nitrogen level greater than 0.95% / dry weight of starch) and anionic.
- cationic starches can easily be used (in order to be contacted with the fibrous composition) in the form of dilute aqueous adhesives of variable concentrations, generally less than 20%, preferably between about 15% and about 1%.
- the preparation of the adhesives is carried out in a manner known per se, by discontinuous or continuous cooking, by example, at 110-130 ° C, in a continuous pressure cooker or "jet-cooker" suitable for ensuring the operations of dosing, cooking and dilution.
- the starch under the form of an uncooked or pregelatinized starch powder, this prior to and / or when it is brought into contact with the fibrous composition.
- starches used in the context of the invention could allow the latter to dissolve satisfactorily (i.e. not instantaneously but gradually) under temperature conditions very significantly lower than those adopted in jet-cooker, for example at temperatures between 10 and 50 ° C approximately.
- So powders starch can advantageously be brought into contact, by any suitable means, with fibrous compositions of which the temperature is brought and / or maintained by any suitable means to a value of about 25 ° C to about 50 ° C.
- the present invention allows it, inter alia and by the nature of the starches which it implements, to simplify certain paper-making processes by eliminating traditional means of continuous cooking or discontinuous starch.
- the cationic starch has a viscosity of approximately 300 to approximately 3000, preferably from 350 to 2500, BRABENDER units (UB).
- Said viscosity is measured on a "BRABENDER 350 CMG" type device.
- a starch sample (25.0 g) is used in sufficient water to obtain a total charge of 480 g. This is introduced in the baking chamber of the viscometer. Cooking is done in a controlled manner (1.5 ° C / min) and we appreciate the viscosity of the adhesive after it has been worn and then maintained for 20 minutes at a temperature of 92 ° C.
- the cationic starch and the fibrous composition are put in contact under conditions such that said cationic starch represents from about 0.2 to about 6%, preferably from 0.3 to 4%, and even more preferably from 0.7 to 3%, of the weight of said fibrous composition.
- the particular cationic starch such that described above is associated with at least one "anionic waste sensor" of a particular type, namely a compound polyaluminum.
- the polyaluminium compound advantageously consists of a salt of formula I, II, IV or V and consists in particular of a product of the WAC, PAC 18 or EKOFLOCK type.
- the polyaluminum compounds used according to the present invention have an aluminum content, expressed as Al 2 O 3 , of approximately 8% to approximately 20% by weight, in particular from 10% to 18% by weight.
- the polyaluminium compound and the fibrous composition are brought into contact under conditions such that said polyaluminium compound, expressed by weight of Al 2 O 3 , represents from approximately 0.01% to approximately 0.5%, preferably 0.015% to 0.4%, of the weight of said fibrous composition.
- the process according to the invention in no way imposes that the cationic starch be brought into contact with the fibrous composition before the polyaluminium compound, or conversely that the polyaluminium compound is brought into contact with the fibrous composition prior to cationic starch.
- the Applicant Company even observed that it was entirely possible bringing the cationic starch and the polyaluminum compound simultaneously or almost simultaneously into contact with the composition fibrous.
- the polyaluminium compound could, in particular in very closed circuits, be introduced, in whole or in part, at the same level as the canvas.
- the polyaluminium compound can in particular be brought into contact with the fibrous composition between a level corresponding to the first vat in the wet part of the paper machine and a level just after the scrubber of the paper machine.
- the cationic starch and the polyaluminum compound can be introduced into a indifferent order at the wet end of the paper machine, including being contacted simultaneously or almost simultaneously with the fibrous composition.
- the time between contacting, respectively, either the cationic starch or the polyaluminum compound with the fibrous composition and contacting, respectively, either the compound polyaluminium or either the cationic starch with the fibrous composition is generally at most equal to 120 minutes approximately and in particular between 0 and 60 minutes, preferably between 0 and 45 minutes, and more preferably between 10 seconds and 40 minutes.
- delays of the order of 25 seconds to 35 minutes in particular 30 seconds to 20 minutes between the respective use of the two products (cationic starch and polyaluminium compound, in any order).
- the manufacturing process paper according to the invention has, among other advantages, in addition to being simple and cost-effective, to allow, especially in difficult conditions (pulp made from FCR or old paper, significant closure of circuits), obtain good starch retention, improve the physical characteristics of the paper and ensure machine speed meeting the requirements of practice, or even improving said machine speed and therefore, overall, improve the profitability of the system.
- the Applicant Company has found that the simultaneous implementation or not, of a polyaluminium compound and of a cationic starch whose fixed nitrogen content is high, in accordance with the invention made it possible, in particular, to remove all or part of certain surface treatments applied to the sheet after his training.
- the method according to the invention is characterized in that the paper obtained is not subjected, on any one of its two faces or even on all of its two faces, with no surface treatment putting using a starch, native or physically and / or chemically modified.
- Another major advantage of the papermaking process according to the invention is, as indicated previously, to allow, compared to the techniques of the prior art, to obtain a starch retention rate improved without negatively influencing the physical characteristics of the paper and / or obtaining characteristics improved physical properties of the paper, without negatively influencing the starch retention rate.
- the process which is the subject of the present invention is capable, including included in difficult conditions (FCR-based pulp or waste paper, significant closure of circuits) to improve significantly both the starch retention rate and the physical characteristics of the paper, as it will be exemplified below.
- paper is not, as specified at the beginning of the description, in no way limiting and includes, in particular, papers for graphic uses (in particular for printing-writing, for inkjet printing, for offset printing, for reprography) and papers for wrapping and packaging (corrugated papers, for flexible packaging of the thin kraft type or others).
- the Applicant Company has in particular observed that the process according to the invention was particularly well suitable for the production of cover or flute type paper for corrugated cardboard.
- the method according to the invention makes it possible to obtain corrugated corrugated paper under conditions (starch retention, machine speed) improved compared to techniques of the prior art and / or having improved characteristics compared to said techniques.
- the present invention is characterized in that the paper obtained is a paper for use graphic or paper for wrapping or packaging, in particular corrugated paper or cover paper for corrugated cardboard.
- the fibrous composition which is used in the context of the present invention has, advantageously a so-called “neutral” or “pseudo neutral” pH, ie from about 6.0 to about 8.0, preferably from 6.1 to 7.1, said pH being able to be controlled or uncontrolled (“free pH”) as may be the case under difficult conditions operating.
- the fibrous composition has a pH, controlled or not, lying between approximately 6.0 and approximately 8.0 and preferably between 6.1 and 7.1.
- said fibrous composition can contain and / or be brought into contact, if necessary, with one or more the other of the products recommended in the aforementioned patents at the level of the prior art, including at least one product chosen from anionic starches, such as phosphorylated or sulfosuccinylated starches, bonding agents such as dimer aklyl ketene and succinic acid anhydrides, fillers, such as calcium carbonate and kaolin, retention agents such as polyacrylamides, polyethylene imines, polyalkyl ammonium chlorides and other synthetic retention agents, silicic and aluminosilicon compounds
- anionic starches such as phosphorylated or sulfosuccinylated starches
- bonding agents such as dimer aklyl ketene and succinic acid anhydrides
- fillers such as calcium carbonate and kaolin
- retention agents such as polyacrylamides, polyethylene imines, polyalkyl ammonium chlorides and other synthetic retention agents, silicic and
- said fibrous composition can advantageously and at any time contain and / or be used in contact with a silica or aluminosilicon compound such as those described in patents EP 41 056 and EP 0 522 940 mentioned above and, optionally, a bonding agent and / or a filler.
- a silica or aluminosilicon compound such as those described in patents EP 41 056 and EP 0 522 940 mentioned above and, optionally, a bonding agent and / or a filler.
- This silicic or aluminosilicate compound can be introduced into the fibrous composition simultaneously starch or at a different time, posterior or anterior, usually spaced a few seconds to a few minutes from the moment of the introduction of said cationic starch.
- the process for manufacturing paper according to the invention is also characterized in that the fibrous composition is brought into contact at any time before the formation of the sheet, with at least one silicic or aluminosilicon compound, in particular with a colloidal silicic acid, the particles of which have a specific surface of approximately 50 to approximately 1000 m 2 / g, as well as possibly with at least one filler or a bonding agent.
- a fibrous composition (pulp) is reconstituted, by dilution in water, having the following main characteristics: pH 6.6 Total concentration 16.8 g / l Soluble concentration 13.7 g / l Acidity 0.24 g / l Resistivity 150 ohms Total ash 12.4 g / l Soluble ash 8.9 g / l
- STARCH D Mixture 25/75 cationic starch / cationic wheat at 0.65% fixed nitrogen.
- STARCH F Amphoteric starch of the sulfosuccinate type with a fixed nitrogen level of 0.25%.
- the implementation, for these tests, is carried out at a rate of 2% of starch and, when it is present, of 1% of CPA.
- the contact time between the starch and the fibrous composition is 5 minutes.
- the contact time between the CPA (when it is used) and the fibrous composition is 6 minutes.
- the MULLEN index makes it possible to assess the burst strength of a paper (for example example corrugated roofing paper) subjected to hydrostatic pressure increasing perpendicularly on its surface, said index taking into account the grammage of said paper.
- a paper for example example corrugated roofing paper
- the CMT 60 index is particularly suitable for the evaluation of corrugated paper for corrugated cardboard and in particular to the determination of the flat compression resistance of such paper.
- a MULLEN index is obtained under these conditions (fibrous composition different from PATE 1, in particular) (value: 1.80) and a particularly high starch retention rate (value: 95%).
Description
- de fibres synthétiques telles que les fibres de polyamides, de polyesters et de résines polyacryliques,
- de fibres minérales telles que les fibres d'amiante, de céramique et de verre,
- de toutes combinaisons de fibres cellulosiques, synthétiques et minérales.
- soit, comme décrit dans le brevet européen EP 285.486, d'augmenter le niveau d'introduction de l'amidon cationique jusqu'à des taux de l'ordre de 5 % exprimé en poids par rapport au poids de fibres et ce, en association avec un polychlorure d'aluminium lequel est, de préférence, mis en oeuvre le plus près possible de la caisse de tête de la machine à papier,
- soit, comme décrit dans le brevet européen EP 285.487, de maintenir des taux relativement faibles d'amidon cationique (0,3 - 0,4 % en poids de fibres) mais en associant obligatoirement ledit amidon, outre à un polychlorure d'aluminium, à une charge minérale (notamment du carbonate de calcium) et à un agent de collage (notamment de type alkyl cétène dimère ou "AKD" ou de type anhydride d'acide succinique ou "ASA").
- ne décrit aucunement les caractéristiques physiques du papier que l'on peut obtenir en associant un amidon cationique et un polychlorure d'aluminium,
- montre que pour certains paramètres un amidon cationique de DS 0,11 n'est pas significativement plus efficace qu'un amidon cationique de DS de 0,032 ou 0,035,
- n'étudie réellement les caractéristiques physiques du papier, évaluées sur "Formette de Rétention", que dans le cadre d'associations amidon cationique / P-DADMAC et ce avec mise en oeuvre d'un amidon (produit C* BOND 05906) lequel est connu pour présenter un taux d'azote relativement peu élevé, en tous cas inférieur à 0,5 %,
- détourne globalement l'homme de l'art d'envisager des amidons cationiques de plus hauts DS, et donc de taux d'azote plus élevés, lesquels seraient "non intéressants d'un point de vue économique".
- des systèmes ternaires "amidon cationique (DS = 0,035) / polymère d'acide silicique particulier / sel d'aluminium" comme décrit au niveau du brevet EP 349.366 précité, ledit sel d'aluminium étant préférentiellement choisi parmi l'alun, l'aluminate de sodium ou le chlorure d'aluminium, et
- en dernier lieu, des systèmes binaires mettant en oeuvre des amidons cationiques porteurs d'aluminium préparés selon des procédés complexes comme il résulte de la lecture des brevets EP 303.039 ou EP 303.040, cités au niveau du brevet EP 490.425 susmentionné.
- brevet FR 2.434.821, en particulier de la page 3, ligne 29 à la page 5, ligne 10,
- brevet EP 139.597, en particulier colonne 1, lignes 30 à 52, et
- brevet EP 282.415, en particulier page 4, lignes 5 à 36.
- demande de brevet FR 2.418.297, page 2, lignes 1 à 14,
- demande de brevet EP 522.940, page 3, lignes 19 à 49, et
- demande de brevet WO 94/01619, page 4, ligne 6 à page 5, ligne 17.
- mettre en contact l'amidon cationique avec la composition fibreuse entre un niveau correspondant au raffineur et un niveau se situant juste avant la caisse de tête, de préférence entre un niveau se situant juste après le raffineur et un niveau se situant juste avant la pompe de mélange de la machine à papier,
- mettre en contact le composé polyaluminium avec la composition fibreuse entre un niveau correspondant au raffineur et un niveau correspondant à la caisse de tête et/ou aux eaux sous toile et, de préférence, entre un niveau se situant juste après le raffineur et un niveau se situant juste avant la caisse de tête de la machine à papier.
- être appliqué à la fabrication de papier cannelure pour ondulé, non surfacé, présentant des caractéristiques physiques, tout à fait compatibles avec les exigences actuelles de la pratique, lesdites caractéristiques étant exprimées, comme indiqué ci-après, en "indice CMT" (selon norme NF Q03-044 ou ISO 7263) et en "indice MULLEN" (indice d'éclatement selon norme NF Q03-053 ou ISO 2758).
- un indice CMT 60 d'au moins 130 environ, de préférence d'au moins 135 environ, exprimé en N,
- un indice MULLEN d'au moins 1,65 environ, de préférence d'au moins 1,70 environ, exprimé en KPa/g.m2 -1.
pH | 6,6 |
Concentration totale | 16,8 g/l |
Concentration en solubles | 13,7 g/l |
Acidité | 0,24 g/l |
Résistivité | 150 ohms |
Cendres totales | 12,4 g/l |
Cendre solubles | 8,9 g/l |
AMIDON A | Fécule (de pomme de terre) cationique présentant un taux d'azote fixé de 1 % environ sur le poids sec d'amidon. |
AMIDON B | Mélange 25/75 d'une fécule cationique et d'un amidon de blé cationique, présentant un taux d'azote fixé de 1,2 % environ. |
AMIDON C | Fécule cationique à 0,8 % d'azote fixé. |
AMIDON D | Mélange 25/75 fécule cationique / blé cationique à 0,65 % d'azote fixé. |
AMIDON E | Amidon de maïs waxy amphotère de type phosphate présentant un taux d'azote fixé de 0,25 %. |
AMIDON F | Fécule amphotère de type sulfosuccinate présentant un taux d'azote fixé de 0,25 %. |
- lait à 10 % de matière sèche (MS),
- température de cuisson : 120°C,
- durée de cuisson : 20 secondes,
- dilution en ligne : 700 l/heure
- absence de pompe en sortie cuiseur.
- taux d'amidon fixé, ci-après désigné "RA", en %,
- indice MULLEN, ci-après désigné "MULLEN", en KPa/g/m2 (selon la norme NF Q03-053 ou ISO 2758),
- indice CMT 60, ci-après désigné "CMT", en N (selon la norme NF Q03-044 ou ISO 7263).
ESSAI | TYPE D'AMIDON | CPA | RA | MULLEN | CMT |
1 | - | - | - | 1,42 | 117 |
2 | - | + | - | 1,32 | 120 |
3 | A | - | 44 | 1,51 | 134 |
4 | A | + | 60 | 1,74 | 136 |
5 | B | - | 46 | 1,53 | 133 |
6 | B | + | 62 | 1,75 | 142 |
7 | C | - | 48 | 1,64 | 132 |
8 | C | + | 56 | 1,72 | 125 |
9 | D | - | 25 | 1,63 | 140 |
10 | D | + | 19 | 1,54 | 148 |
11 | E | - | ND | 1,61 | 138 |
12 | E | + | ND | 1,58 | 134 |
13 | F | - | 38 | 1,63 | 146 |
14 | F | + | 38 | 1,57 | 142 |
- composition fibreuse : identique à la pâte testée au niveau des ESSAIS 1 à 14 ("PATE 1"),
- amidons mis en oeuvre : 1 % d'amidon de type A + 1 % d'amidon anionique de type VECTOR R A180 commercialisé par la Demanderesse,
- CPA mis en oeuvre : 2 % de "PAC 18",
- temps contact amidon A : 5 mn,
- temps contact PAC 18 : 6 mn,
- temps contact VECTOR R A180 : 1 mn,
- grammage du papier : 123 g/m2.
- composition fibreuse : PATE 1,
- amidon mis en oeuvre : 2 % d'amidon A sous forme d'une poudre d'amidon non cuit,
- CPA mis en oeuvre : 2 % de "PAC" 18,
- temps de contact amidon A : 6 mn, avec chauffage préalable de 10 mn à 45°C en vue de solubiliser l'amidon,
- temps de contact PAC 18 : 6 mn,
- grammage du papier : 127 g/m2.
- composition fibreuse : pâte reconstituée à partir d'une pâte épaisse à base de vieux papiers présentant un pH de 7,0, une concentration totale de 7,17 g/l, une concentration en solubles de 3,32 g/l et une résistivité de 457 ohms,
- amidon mis en oeuvre : 2 % d'amidon A,
- CPA mis en oeuvre : 1 % de polychlorosulfate basique d'aluminium de type "WAC",
- temps de contact amidon A : 4 mn 30,
- temps de contact WAK : 5 mn
- grammage du papier : 135 g/m2.
Claims (11)
- Procédé de fabrication de papier à partir d'une composition fibreuse, caractérisé par le fait que l'on met ladite composition fibreuse en contact, simultanément ou non, avec au moins un amidon cationique présentant un taux d'azote fixé supérieur à 0,95 %, exprimé sur le poids sec d'amidon, et avec au moins un composé polyaluminium.
- Procédé selon la revendication 1, caractérisé par le fait que l'amidon cationique présente un taux d'azote fixé d'environ 1,0 % à environ 3,0 %, de préférence de 1,0 % à 2,5 % et plus préférentiellement encore entre 1,0 % et 1,6 %.
- Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que l'amidon se présente sous la forme d'une poudre d'amidon non cuit ou d'amidon prégélatinisé lors de sa mise en contact avec la composition fibreuse, ladite composition fibreuse présentant de préférence une température d'environ 25°C à environ 50°C.
- Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le composé polyaluminium est un polyhydroxyde d'aluminium, un polychlorure d'aluminium, un polychlorure basique d'aluminium, un polychlorosulfate basique d'aluminium ou un polysulfate d'aluminium, ledit composé polyaluminium présentant de préférence une teneur en aluminium, exprimée en Al2 O3, d'environ 8 % à environ 20 % en poids et plus préférentiellement de 10 à 18 % en poids.
- Procédé selon l'une des revendications 1 à 4, caractérisé :en ce que l'on met en contact l'amidon cationique avec la composition fibreuse entre un niveau correspondant au raffineur et un niveau se situant juste avant la caisse de tête, de préférence entre un niveau se situant juste après le raffineur et un niveau se situant juste avant la pompe de mélange de la machine à papier, eten ce que l'on met en contact le composé polyaluminium avec la composition fibreuse entre un niveau correspondant au raffineur et un niveau correspondant à la caisse de tête et/ou aux eaux sous toile, de préférence entre un niveau se situant juste après le raffineur et un niveau se situant juste avant la caisse de tête de la machine à papier.
- Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le délai compris entre la mise en contact de, respectivement, soit l'amidon cationique soit le composé polyaluminium, avec la composition fibreuse et la mise en contact de, respectivement, soit le composé polyaluminium soit l'amidon cationique avec la composition fibreuse, est compris entre 0 et 60 minutes, de préférence entre 0 et 45 minutes, et plus préférentiellement encore entre 10 secondes et 40 minutes.
- Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le papier obtenu n'est soumis, sur l'une quelconque de ses deux faces voire sur l'ensemble de ses deux faces, à aucun traitement de surface mettant en oeuvre un amidon, natif ou modifié physiquement et/ou chimiquement.
- Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le papier obtenu est un papier à usage graphique ou un papier pour l'emballage ou le conditionnement, en particulier un papier cannelure ou un papier couverture pour carton ondulé.
- Procédé selon l'une des revendications 1 à 8, caractérisé en ce que la composition fibreuse présente un pH, contrôlé ou non, se situant entre environ 6,0 et environ 8,0, préférentiellement entre 6,1 et 7,1.
- Procédé selon l'une des revendications 1 à 9, caractérisé en ce que la composition fibreuse est mise en contact à un moment quelconque avant la formation de la feuille, avec au moins un composé silicique ou aluminosilicique, en particulier avec un acide silicique colloïdal dont les particules présentent une surface spécifique d'environ 50 à environ 1000 m2/g, ainsi qu'éventuellement avec au moins une charge ou un agent de collage.
- Utilisation d'un amidon cationique présentant un taux d'azote fixé supérieur à 0,95 % exprimé sur le poids sec d'amidon, et d'un composé polyaluminium pour la fabrication de papier, en particulier de papier à usage graphique ou de papier pour l'emballage ou le conditionnement et tout particulièrement pour le papier cannelure pour carton ondulé ou le papier couverture pour carton ondulé.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9503823A FR2732368B1 (fr) | 1995-03-31 | 1995-03-31 | Nouveau procede de fabrication de papier |
FR9503823 | 1995-03-31 | ||
PCT/FR1996/000468 WO1996030591A1 (fr) | 1995-03-31 | 1996-03-28 | Procede de fabrication de papier |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0763159A1 EP0763159A1 (fr) | 1997-03-19 |
EP0763159B1 EP0763159B1 (fr) | 2001-12-05 |
EP0763159B2 true EP0763159B2 (fr) | 2004-12-08 |
Family
ID=9477625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96910068A Expired - Lifetime EP0763159B2 (fr) | 1995-03-31 | 1996-03-28 | Procede de fabrication de papier |
Country Status (13)
Country | Link |
---|---|
US (1) | US5891305A (fr) |
EP (1) | EP0763159B2 (fr) |
JP (1) | JPH10501590A (fr) |
AT (1) | ATE210220T1 (fr) |
AU (1) | AU5338296A (fr) |
BR (1) | BR9605947A (fr) |
CA (1) | CA2190499A1 (fr) |
DE (1) | DE69617573T3 (fr) |
ES (1) | ES2169234T3 (fr) |
FR (1) | FR2732368B1 (fr) |
NO (1) | NO317239B1 (fr) |
NZ (1) | NZ305397A (fr) |
WO (1) | WO1996030591A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1293603B1 (fr) | 1997-09-30 | 2007-07-11 | Nalco Chemical Company | Fabrication de papier à l'aide de borosilicates colloidaux |
CO5070714A1 (es) | 1998-03-06 | 2001-08-28 | Nalco Chemical Co | Proceso para la preparacion de silice coloidal estable |
US6379501B1 (en) | 1999-12-14 | 2002-04-30 | Hercules Incorporated | Cellulose products and processes for preparing the same |
EP1338699A1 (fr) * | 2002-02-08 | 2003-08-27 | AKZO Nobel N.V. | Dispersion de collage |
KR100755895B1 (ko) | 2004-08-31 | 2007-09-06 | 은광판지포장 주식회사 | 부식방지 및 전자파 차단용 골판지 |
EP2682419A1 (fr) | 2012-07-06 | 2014-01-08 | Cryovac, Inc. | Revêtement anti-buée et son film anti-buée en polyester |
US8821689B1 (en) * | 2013-01-25 | 2014-09-02 | Penford Products Co. | Starch-biogum compositions |
CN108130801B (zh) | 2013-12-18 | 2020-11-24 | 艺康美国股份有限公司 | 生产用于造纸的活化胶态二氧化硅的方法 |
CN107447582B (zh) | 2016-06-01 | 2022-04-12 | 艺康美国股份有限公司 | 用于在高电荷需求系统中造纸的高效强度方案 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1274654A (en) * | 1968-09-12 | 1972-05-17 | Laporte Industries Ltd | Improvements in or relating to paper sizing |
US4066495A (en) * | 1974-06-26 | 1978-01-03 | Anheuser-Busch, Incorporated | Method of making paper containing cationic starch and an anionic retention aid |
CA1057009A (fr) * | 1974-10-24 | 1979-06-26 | Wadym Jarowenko | Nouveau derive de l'amidon |
FR2418297A1 (fr) * | 1978-02-27 | 1979-09-21 | Ugine Kuhlmann | Amelioration aux procedes de fabrication de papiers et de cartons |
FR2434821A1 (fr) * | 1978-08-31 | 1980-03-28 | Roquette Freres | Procede de cationisation de l'amidon, nouveaux amidons cationises ainsi obtenus et leurs applications |
DE2949886A1 (de) * | 1979-12-12 | 1981-06-19 | Degussa Ag, 6000 Frankfurt | Verfahren zur herstellung kationischer staerkeaether |
US4281109A (en) * | 1980-03-03 | 1981-07-28 | National Starch And Chemical Corporation | Pollution-free cationization of starch |
AU546999B2 (en) * | 1980-05-28 | 1985-10-03 | Eka A.B. | Adding binder to paper making stock |
WO1982001020A1 (fr) * | 1980-09-19 | 1982-04-01 | O Sunden | Procede de fabrication du papier utilisant une structure muqueuse amphotere comme liant |
FR2557166B1 (fr) * | 1983-10-27 | 1986-07-04 | Roquette Freres | Additif cationique de masse pour la fabrication du papier comprenant un melange d'au moins un amidon de cereale et d'au moins un amidon de tubercule cationique et son procede de fabrication |
SE8403062L (sv) * | 1984-06-07 | 1985-12-08 | Eka Ab | Forfarande vid papperstillverkning |
DE3604796A1 (de) * | 1986-02-15 | 1987-08-20 | Degussa | Verfahren zur trockenkationisierung von staerke |
US4876336A (en) * | 1986-08-13 | 1989-10-24 | National Starch And Chemical Corporation | Amphoteric starches and process for their preparation |
SE8700058L (sv) * | 1987-01-09 | 1988-07-10 | Skogsindustriens Tekniska Fors | Papperstillverkning |
FR2612213B1 (fr) * | 1987-03-13 | 1989-06-30 | Roquette Freres | Procede de fabrication du papier |
FR2612960B1 (fr) * | 1987-03-23 | 1989-06-16 | Atochem | Procede de fabrication du papier d'emballage et du carton par adjonction a la suspension fibreuse d'amidon cationique et de polychlorure d'aluminium |
FR2612961B1 (fr) * | 1987-03-23 | 1989-10-13 | Atochem | Procede de fabrication du papier par adjonction a la suspension fibreuse d'une charge minerale, d'un agent de collage, d'amidon cationique et de polychlorure d'aluminium |
DE3726427A1 (de) * | 1987-08-08 | 1989-02-16 | Degussa | Verfahren zur trockenkationisierung von staerke ii |
DE3726984A1 (de) * | 1987-08-13 | 1989-02-23 | Degussa | Verfahren zur trockenkationisierung von galaktomannanen (ii) |
JPH0192498A (ja) * | 1987-10-02 | 1989-04-11 | Hokuetsu Paper Mills Ltd | 中性紙の製造方法 |
NL8800647A (nl) * | 1988-03-16 | 1989-10-16 | Avebe Coop Verkoop Prod | Werkwijze voor het vervaardigen van zetmeelethers. |
SE461156B (sv) * | 1988-05-25 | 1990-01-15 | Eka Nobel Ab | Saett foer framstaellning av papper varvid formning och avvattning aeger rum i naervaro av en aluminiumfoerening, ett katjoniskt retentionsmedel och en polymer kiselsyra |
CA2019675C (fr) * | 1989-07-07 | 1997-12-30 | John J. Tsai | Polysaccharides cationiques et reactifs pour leur preparation |
US4992536A (en) * | 1989-10-31 | 1991-02-12 | National Starch And Chemical Investment Holding Corporation | Preparation of polycationic polysaccharides by site selective reaction |
SE9003954L (sv) * | 1990-12-11 | 1992-06-12 | Eka Nobel Ab | Saett foer framstaellning av ark- eller banformiga cellulosafiberinnehaallande produkter |
FR2678961B1 (fr) * | 1991-07-12 | 1993-10-15 | Atochem | Procede nouveau de fabrication de papier et papier ainsi obtenu. |
-
1995
- 1995-03-31 FR FR9503823A patent/FR2732368B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-28 AT AT96910068T patent/ATE210220T1/de not_active IP Right Cessation
- 1996-03-28 CA CA002190499A patent/CA2190499A1/fr not_active Abandoned
- 1996-03-28 EP EP96910068A patent/EP0763159B2/fr not_active Expired - Lifetime
- 1996-03-28 WO PCT/FR1996/000468 patent/WO1996030591A1/fr active IP Right Grant
- 1996-03-28 US US08/737,602 patent/US5891305A/en not_active Expired - Fee Related
- 1996-03-28 DE DE69617573T patent/DE69617573T3/de not_active Expired - Lifetime
- 1996-03-28 NZ NZ305397A patent/NZ305397A/en unknown
- 1996-03-28 BR BR9605947A patent/BR9605947A/pt not_active Application Discontinuation
- 1996-03-28 ES ES96910068T patent/ES2169234T3/es not_active Expired - Lifetime
- 1996-03-28 AU AU53382/96A patent/AU5338296A/en not_active Abandoned
- 1996-03-28 JP JP8529018A patent/JPH10501590A/ja active Pending
- 1996-11-26 NO NO19965024A patent/NO317239B1/no not_active IP Right Cessation
Non-Patent Citations (2)
Title |
---|
Nordic Pulp and Paper Research Journal No. 1/1993, pp21-26 † |
TAPPI Proceedings - 1993 - Papermakers Conference, 639-654 † |
Also Published As
Publication number | Publication date |
---|---|
CA2190499A1 (fr) | 1996-10-03 |
FR2732368B1 (fr) | 1997-06-06 |
NZ305397A (en) | 1997-12-19 |
FR2732368A1 (fr) | 1996-10-04 |
AU5338296A (en) | 1996-10-16 |
DE69617573T3 (de) | 2005-08-11 |
WO1996030591A1 (fr) | 1996-10-03 |
JPH10501590A (ja) | 1998-02-10 |
DE69617573D1 (de) | 2002-01-17 |
ATE210220T1 (de) | 2001-12-15 |
EP0763159B1 (fr) | 2001-12-05 |
US5891305A (en) | 1999-04-06 |
EP0763159A1 (fr) | 1997-03-19 |
ES2169234T3 (es) | 2002-07-01 |
DE69617573T2 (de) | 2002-08-01 |
NO317239B1 (no) | 2004-09-27 |
NO965024L (no) | 1996-11-26 |
BR9605947A (pt) | 1997-08-19 |
NO965024D0 (no) | 1996-11-26 |
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