DK171149B1 - Process for producing packaging paper and cardboard - Google Patents
Process for producing packaging paper and cardboard Download PDFInfo
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- DK171149B1 DK171149B1 DK154688A DK154688A DK171149B1 DK 171149 B1 DK171149 B1 DK 171149B1 DK 154688 A DK154688 A DK 154688A DK 154688 A DK154688 A DK 154688A DK 171149 B1 DK171149 B1 DK 171149B1
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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
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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
Landscapes
- Paper (AREA)
- Making Paper Articles (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
- Packaging Of Special Articles (AREA)
- Cartons (AREA)
Abstract
Description
i DK 171149 B1in DK 171149 B1
Den foreliggende opfindelse angår en forbedret fremgangsmåde til fremstilling af emballagepapir og pap.The present invention relates to an improved process for producing packaging paper and cardboard.
Pastaen af rå papirmasse bestående i hovedsagen af cellu-5 losefibre bringes i form af en fortyndet vandig suspension, som føres til beholderen ved begyndelsen af papirmaskinen, hvorfra den fordeles over et filtrerende væv, på hvilket papirbanen dannes. Denne bane afsuges derpå, hvorpå den tørres. Kvaliteten og egenskaberne ved det således 10 opnåede papir bestemmes især af driftsbetingelserne for papirmaskinen, den rå pasta, de forskellige additiver, som man sætter til suspensionen før dannelsen af banen, og ligeledes de substanser, som man pålægger på papirbanen efter det filtrerende væv.The paste of raw pulp consisting essentially of cellulose fibers is brought in the form of a dilute aqueous suspension which is fed to the container at the beginning of the paper machine from which it is distributed over a filtering tissue on which the paper web is formed. This web is then aspirated and dried. The quality and properties of the paper thus obtained are determined in particular by the operating conditions of the paper machine, the raw paste, the various additives which are added to the suspension before forming the web, and also the substances which are applied to the paper web after the filtering web.
1515
Den foreliggende opfindelses område er især de substanser, som man sætter til før dannelsen af banen.In particular, the scope of the present invention is those substances added prior to formation of the web.
Den for emballage vigtigste efterstræbte kvalitet er soli-20 detet, det kan ligeledes være interessant at gøre papiret modstandsdygtigt over for fugtighed. Cellulosefibrene stammer fra en pasta af rå papirmasse; men hyppigt fra recirkuleret papir eller pap, undertiden blandet med rå papirmasse .The most important quality for packaging is the solids, it can also be interesting to make the paper resistant to moisture. The cellulose fibers come from a paste of raw pulp; but frequently from recycled paper or cardboard, sometimes mixed with raw pulp.
25 I WO patentskrift nr. 86/02677 er beskrevet et hydrofobi-seringsmiddel til cellulosefibre. Midlet består af i vand fint dispergeret harpiks- eller fedtsyre, hvor den vandige fase indeholder et polyaluminiumsalt og fortrinsvis en 30 kationisk organisk forbindelse. Midlet kan f.eks. tilføres cellulosefibrene ved tilsætning af dette til en vandig suspension af disse. Med dette middel opnås angiveligt en god hydrofobiserende virkning selv ved de høje pH-værdier, 2 DK 171149 B1 som papir indeholdende store mængder calciumcarbonat-fyld-stof giver anledning til.25 WO Patent No. 86/02677 discloses a hydrophobizing agent for cellulose fibers. The agent consists of a finely dispersed resin or fatty acid in water, wherein the aqueous phase contains a polyaluminum salt and preferably a cationic organic compound. The agent may e.g. the cellulose fibers are added by adding them to an aqueous suspension thereof. With this agent, a good hydrophobic effect is reportedly obtained even at the high pH values, which give rise to paper containing large amounts of calcium carbonate filler.
I britisk patentskrift 2 015 614 er omtalt en fremgangsmå-5 de til fremstilling af papir til emballage og bølgepap, ved hvilke man til suspensionen af fibrene før fødekuben ved begyndelsen af maskinen sætter kationisk stivelse og et basisk aluminiumpolychlorsulfat eller aluminiumsulfat. Mængden af kationisk stivelse overstiger ikke 0,4 vægt-% i 10 forhold til cellulosefibrene.British Patent Specification 2 015 614 discloses a process for making paper for packaging and corrugated board, in which cationic starch and a basic aluminum polychlorosulfate or aluminum sulfate are added to the suspension of the fibers before the feed cube at the beginning of the machine. The amount of cationic starch does not exceed 0.4% by weight relative to the cellulose fibers.
Man ved, at den kationiske stivelse bidrager til papirets mekaniske modstandsdygtighed, og det ville være nyttigt at tilsætte meget mere end 0,4% til suspensionen og frem for 15 alt at bibeholde denne stivelse i den dannede bane. Stivelse er imidlertid meget hydrofilt, og dersom man overskrider en mængde på 0,5% kan man ikke længere danne papirbanen på det filtrerende væv, hvis man ikke kraftigt reducerer papirmaskinens produktivitet. Man har nu fundet 20 ifølge den foreliggende fremgangsmåde en hidtil ukendt fremgangsmåde, som gør det muligt at anvende stivelsesmængder større end 0,5% i fødekuben ved begyndelsen af papirmaskinen .It is known that the cationic starch contributes to the mechanical resistance of the paper, and it would be useful to add much more than 0.4% to the suspension and, above all, to retain this starch in the formed web. However, starch is very hydrophilic and if you exceed an amount of 0.5% you can no longer form the paper web on the filtering tissue if you do not greatly reduce the productivity of the paper machine. 20 has now been found in accordance with the present method a novel method which allows starch amounts greater than 0.5% to be used in the feed cube at the beginning of the paper machine.
25 Den foreliggende opfindelse er en fremgangsmåde til fremstilling af emballagepapir og af pap, som er ejendommelig derved, at man til suspensionen indeholdende cellulosefibrene før dannelsen af banen sætter: 30 a) mere end 0,7 dele kationisk stivelse pr. 100 dele cellulosefibre, og b) 0,02-1 del aluminiumpolychlorid (udtrykt som AI2O3) pr. 100 dele cellulosefibre.The present invention is a process for the manufacture of packaging paper and cardboard which is characterized in that the suspension containing the cellulose fibers prior to forming the web is added: 30 a) more than 0.7 parts of cationic starch per minute. And b) 0.02-1 parts of aluminum polychloride (expressed as AI2O3) per 100 parts. 100 parts cellulose fibers.
3 DK 171149 B13 DK 171149 B1
Suspensionen indeholdende cellulosefibrene kan være af rå papirmasse eller af bleget papirmasse eller en blanding af rå papirmasse og af bleget papirmasse. Man sætter ofte brugte papmaterialer til den ovenfor nævnte blanding.The suspension containing the cellulose fibers may be of raw pulp or of bleached pulp or a mixture of raw pulp and of bleached pulp. Used cardboard materials are often added to the above mentioned mixture.
55
Den kationiske stivelse er en blanding af et eller flere kommercielt tilgængelige produkter, som betegnes med det generiske navn kationisk stivelse. Disse produkter er f.eks. sådanne, som er omtalt i værket af KIRK OTHMER, 3.The cationic starch is a mixture of one or more commercially available products designated by the generic name cationic starch. These products are e.g. those mentioned in the work of KIRK OTHMER, 3.
10 udgave bind 21 side 503. Mængden deraf er med fordel mellem 0,7 og 5 dele pr. 100 dele cellulosefibre, fortrinsvis mellem 0,7 og 2.10 edition volume 21 page 503. The amount thereof is advantageously between 0.7 and 5 parts per minute. 100 parts of cellulose fibers, preferably between 0.7 and 2.
Udtrykket aluminiumpolychlorid betegner stoffer, som man 15 sædvanligvis kalder "aluminiumpolychlorid", "basisk alumi-niumpolychlorid", eller "basisk aluminiumpolychlorsulfat", og er fortrinsvis et eller flere af følgende produkter: 1) Saltet med formlen: 20The term aluminum polychloride refers to substances commonly referred to as "aluminum polychloride", "basic aluminum polychloride", or "basic aluminum polychlorosulfate", and is preferably one or more of the following products: 1) The salt of the formula:
Aln(0H)MCl3n_m (I) hvori n er vilkårlig valgt, 3n-m har en positiv værdi, idet m og n er hele positive tal. Dette salt kan yderlige- 25 re indeholde en polyvalent anion Y valgt blandt anionerne af svovlsyre, phosphorsyre, polyphosphorsyre, kiselsyre, chromsyre, carboxylsyrer og sulfonsyrer, idet molforholdet Y fortrinsvis ligger mellem 0,015 og 0,4.Aln (OH) MCl3n_m (I) wherein n is arbitrarily selected, 3n-m has a positive value, with m and n being whole positive numbers. This salt may further contain a polyvalent anion Y selected from the anions of sulfuric acid, phosphoric acid, polyphosphoric acid, silicic acid, chromic acid, carboxylic acids and sulfonic acids, the molar ratio Y being preferably between 0.015 and 0.4.
Al 30 2) Saltet med formlen:Al 30 2) The salt of the formula:
Aln(OH)mCl3n_m-2k(s^4)k (**) 4 DK 171149 B1 hvori k, m og n er hele positive tal, 3n > m + 2k, basici-teten m/3m ligger mellem 0,3 og 0,7, og k/n = 0,01 - 0,03. Dette produkt kan fremstilles ved den fremgangsmåde, der er beskrevet i US patentskrift 3 929 666.Aln (OH) mCl3n_m-2k (s ^ 4) k (**) 4 wherein k, m and n are whole positive numbers, 3n> m + 2k, the basicity m / 3m is between 0.3 and 0.7, and k / n = 0.01 - 0.03. This product can be prepared by the method described in US Patent 3,929,666.
5 3) Saltet med formlen: A1n<0H>3n-m-2pcl..<s04>p _ z (111) hvori (3n-m-2p)/3n = 0,4 - 0,7; p = 0,04 - 0,25n; m/p = 10 8 - 35; idet k, m, n og p er hele tal, og z er mindst 1. Dette produkt er beskrevet i britisk patentskrift 2 128 977.3) The salt of the formula: A1n <0H> 3n-m-2pcl .. <s04> p _ z (111) wherein (3n-m-2p) / 3n = 0.4 - 0.7; p = 0.04 - 0.25n; m / p = 10 8 - 35; with k, m, n and p being integers and z being at least 1. This product is disclosed in British Patent Specification 2 128 977.
4) Basisk aluminiumchlorsulfat med formlen: 154) Basic aluminum chlorosulfate of the formula: 15
Aln0Hm(S04)kCl3n-m-2k <IV> hvori basiciteten eller molforholdet “ x 100 er på mellem 3n ca. 40% og 65%, og idet det udviser et forhold ækvivalent 20 Al/ækvivalent Cl på mellem 2,8 og 5, en tilsyneladende molekylvægt MA målt ved klassisk lysdiffusion og tilsyneladende hydrodynamiske diametre ØZ og ØW målt ved quasi-elektrisk diffusion af lys med følgende værdier: 25 MA 7000 - 35000 ØZ (A) = 350 - 2500 ØW (A) = 200 - 1200AlnOHm (SO4) kCl3n-m-2k <IV> wherein the basicity or molar ratio “x 100 is between 3n approx. 40% and 65%, and exhibiting a ratio equivalent to 20 Al / equivalent Cl of between 2.8 and 5, an apparent molecular weight MA measured by classical light diffusion and apparent hydrodynamic diameters ØZ and ØW measured by quasi-electric diffusion of light with the following values: 25 MA 7000 - 35000 EZ (A) = 350 - 2500 EW (A) = 200 - 1200
Dette produkt er beskrevet i fransk patentskrift 30 2 584 699.This product is disclosed in French Patent Specification 30 2,584,699.
DK 171149 Bl 5 Mængden af aluminiumpolychlorid udtrykt som AI2O3, der skal anvendes, er fortrinsvis mellem 0,02 og 0,3 pr. 100 dele cellulosefibre.The amount of aluminum polychloride expressed as Al 2 O 3 to be used is preferably between 0.02 and 0.3 per mole. 100 parts cellulose fibers.
5 Skønt man kunne tilsætte produkterne (a) og (b) i en vilkårlig rækkefølge og på et hvilket som helst sted før fø-dekuben ved begyndelsen af papirmaskinen, foretrækker man at tilsætte aluminiumpolychloridet efter den kationiske stivelse. Man foretrækker ligeledes, at aluminiumpolychlo-10 ridet bliver tilsat så nær som muligt ved fødekuben i begyndelsen af maskinen.Although products (a) and (b) could be added in any order and at any location before the feed cube at the beginning of the paper machine, it is preferred to add the aluminum polychloride after the cationic starch. It is also preferred that the aluminum polychloride be added as close as possible to the feed cube at the beginning of the machine.
Man kan ligeledes til suspensionen af cellulosefibre før dannelsen af banen, og ud over de omtalte produkter (a) og 15 (b), sætte andre produkter, såsom farvestoffer.It is also possible to add other products such as dyes to the suspension of cellulose fibers before forming the web, and in addition to the products (a) and 15 (b) mentioned.
Ved en anden udførelsesform for opfindelsen kan man ud over den kationiske stivelse tilsætte et eller flere produkter valgt blandt polyacrylamider, polyethyleniminer, 20 carboxymethylcellulose, formaldehyd-urinstof-kunstharpik-ser, formaldehyd-melamin-kunstharpikser, epichlorhydrin-aminpolyamid-kunstharpikser eller epichlorhydrin-polyamid-kunstharpikser. Man anvender med fordel disse produkter ud over den kationiske stivelse og i de samme mængder.In another embodiment of the invention, in addition to the cationic starch, one or more products selected from polyacrylamides, polyethylenimines, carboxymethyl cellulose, formaldehyde urea synthetic resins, formaldehyde melamine synthetic resins, epichlorohydrin-amine polyamide resins, -kunstharpikser. These products are advantageously used in addition to the cationic starch and in the same amounts.
2525
Man kan ligeledes ved en anden udførelsesform for opfindelsen ud over produkterne (a) og (b) eller ud over de produkter, som man tilsætter med den kationiske stivelse såsom polyacrylamiderne og de andre ovenfor omtalte, til-30 sætte et limmiddel for at gøre papiret noget hydrofobt, hvorved man gør det modstandsdygtigt over for fugtighed.In another embodiment of the invention, in addition to products (a) and (b) or in addition to the products added with the cationic starch such as the polyacrylamides and the others mentioned above, an adhesive may be added to make the paper something hydrophobic, making it resistant to moisture.
Skønt man kan bruge ethvert limmiddel, anvender man med fordel collophan eller en blanding af et eller flere pro DK 171149 Bl 6 dukter valgt blandt dimere alkylketener og derivater deraf, fluorerede phosphater, carboxylsyreanhydrider med fedtsyrekæder, visse polyurethaner og copolymere af styren- og maleinsyreanhydrid.Although any adhesive can be used, collophan or a mixture of one or more products selected from dimeric alkyl chains and derivatives thereof, fluorinated phosphates, carboxylic anhydrides with fatty acid chains, certain polyurethanes and copolymers of styrene and maleic anhydride is advantageously used.
55
Man foretrækker at anvende dimere alkylketener og caboxyl-syreanhydrider. Den mængde, der skal anvendes, er en funktion af de tilstræbte egenskaber for papiret eller for pappet. Mængden er med fordel mindre end 10 dele pr. 100 10 dele cellulosefibre, fortrinsvis mellem 0,1 og 2 dele.It is preferred to use dimeric alkyl ketene and caboxyl acid anhydrides. The amount to be used is a function of the desired properties of the paper or of the paperboard. The amount is advantageously less than 10 parts per unit. 100 parts of cellulose fibers, preferably between 0.1 and 2 parts.
Limmiddel tilsættes fortrinsvis før aluminiumpolychlori- det.Adhesive is preferably added before the aluminum polychloride.
15 Man kan ligeledes til suspensionen før dannelsen af banen sætte sædvanlige additiver såsom farvestoffer etc.It is also possible to add usual additives such as dyes, etc. to the suspension before forming the web.
En anden fordel knyttet til opfindelsen ud over de opnåede gode mekaniske egenskaber er en kraftig nedsættelse af ma-20 terialer i suspension i vandet, der opsamles under det filtrerende væv under dannelsen af banen.Another advantage of the invention, in addition to the good mechanical properties obtained, is a substantial reduction in water suspension material which is collected under the filtering tissue during the formation of the web.
En anden fordel knyttet til opfindelsen er en meget større produktivitet for papirmaskinen og en bedre indre sammen-25 hæng. Alle disse fordele vil fremgå af eksemplerne. Eksemplerne belyser opfindelsen eller er sammenligningseksempler .Another advantage of the invention is a much greater productivity for the paper machine and a better internal consistency. All these advantages will be apparent from the examples. The examples illustrate the invention or are comparative examples.
EKSEMPEL 1 (Ikke i overensstemmelse med opfindelsen) 30 - Sammensætning ved fødekuben i begyndelsen af maskinen: 100% returpapirEXAMPLE 1 (Not in accordance with the invention) 30 - Composition at the feed cube at the beginning of the machine: 100% recycled paper
Limmiddel: dimer alkylketen 0,15 dele 7 DK 171149 B1 - Karakteristika for papirmaskinens kørsel:Adhesive: dimer alkyl chain 0.15 parts 7 DK 171149 B1 - Characteristics of the paper machine's operation:
Det flade bords anvendelige bredde: 2,6 m Gramvægt: 19 0 g/m^Applicable width of the flat table: 2.6 m Gram weight: 19 0 g / m ^
Arten af papir: dæklag til bølgepap 5 Behandling efter dannelsen af banen: påsprøjtning af na-tivt stivelse på overfladen.Nature of paper: corrugated cardboard cover 5 Treatment after forming the web: spraying of native starch on the surface.
Man tilsætter kationisk stivelse, 1,4 dele pr. 100 dele fibre.Cationic starch, 1.4 parts per ml, is added. 100 parts fiber.
1010
Maskinens hastighed: 163 m/minut Total tilbageholdelse: 79%Machine speed: 163 m / minute Total retention: 79%
Sprængningsindeks Mullen: 2,75 (i overensstemmelse med fransk norm NF Q 03053) 15 pH (ved fødekuben i begyndelsen af maskinen): 7,2.Explosion index Mullen: 2.75 (in accordance with French standard NF Q 03053) pH (at the feed cube at the beginning of the machine): 7.2.
EKSEMPEL 2 (Ifølge opfindelsen)EXAMPLE 2 (According to the Invention)
Man går frem analogt med eksempel 1, idet man dog yderli-20 gere tilsætter, før fødekuben ved begyndelsen af maskinen, et aluminiumpolychlorid i en mængde på 0,15 dele udtrykt som AI2O3 pr. 100 dele cellulosefibre.One proceeds analogously to Example 1, however, further adding, before the feed cube at the beginning of the machine, an aluminum polychloride in an amount of 0.15 parts expressed as Al 100 parts cellulose fibers.
Man opnår: 25Obtained: 25
Maskinens hastighed: 200 m/minut Samlet tilbageholdelse: 85%Machine speed: 200 m / minute Total retention: 85%
Mullen: 3,09 pH (ved fødekuben i begyndelsen af maskinen): 7,2.Mullen: 3.09 pH (at the feed cube at the beginning of the machine): 7.2.
30 DK 171149 B1 e EKSEMPEL 3 (Ifølge opfindelsen)EXAMPLE 3 (According to the Invention)
Man går frem analogt med eksempel 2, idet man dog tilsætter 0,16 dele aluminiumpolychlorid som i eksempel 2 pr.You proceed by analogy with Example 2, however, adding 0.16 parts of aluminum polychloride as in Example 2 per minute.
5 100 dele cellulosefibre, hvorved man opnår:5 100 parts of cellulose fibers, thus obtaining:
Maskinens hastighed: 220 m/minut Samlet tilbageholdelse: 85%Machine speed: 220 m / minute Total retention: 85%
Mullen: 2,96 10 pH (ved fødekuben i begyndelsen af maskinen): 7,2.Mullen: 2.96 pH (at the feed cube at the beginning of the machine): 7.2.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8704002A FR2612960B1 (en) | 1987-03-23 | 1987-03-23 | PROCESS FOR THE MANUFACTURE OF PACKAGING PAPER AND CARDBOARD BY ADDITION TO THE FIBROUS SUSPENSION OF CATIONIC STARCH AND ALUMINUM POLYCHLORIDE |
| FR8704002 | 1987-03-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK154688D0 DK154688D0 (en) | 1988-03-22 |
| DK154688A DK154688A (en) | 1988-09-24 |
| DK171149B1 true DK171149B1 (en) | 1996-07-01 |
Family
ID=9349311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK154688A DK171149B1 (en) | 1987-03-23 | 1988-03-22 | Process for producing packaging paper and cardboard |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0285486B2 (en) |
| JP (1) | JPH0723596B2 (en) |
| AT (1) | ATE56493T1 (en) |
| CA (1) | CA1324704C (en) |
| DE (1) | DE3860586D1 (en) |
| DK (1) | DK171149B1 (en) |
| ES (1) | ES2018079T5 (en) |
| FI (1) | FI94971C (en) |
| FR (1) | FR2612960B1 (en) |
| GR (2) | GR3001183T3 (en) |
| IE (1) | IE60108B1 (en) |
| NO (1) | NO174012C (en) |
| PT (1) | PT87043B (en) |
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| 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 |
| FR2678961B1 (en) * | 1991-07-12 | 1993-10-15 | Atochem | NEW PROCESS FOR THE MANUFACTURE OF PAPER AND THE PAPER THUS OBTAINED. |
| 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 |
| CN114673025B (en) | 2016-06-01 | 2023-12-05 | 艺康美国股份有限公司 | High-efficiency strength scheme for papermaking in high-charge-demand systems |
| CN109468886A (en) * | 2018-12-27 | 2019-03-15 | 东莞市江高包装材料有限公司 | A kind of production technology of wrapping paper |
Family Cites Families (5)
| 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 |
| 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 |
-
1987
- 1987-03-23 FR FR8704002A patent/FR2612960B1/en not_active Expired
-
1988
- 1988-03-08 NO NO881030A patent/NO174012C/en unknown
- 1988-03-15 DE DE8888400617T patent/DE3860586D1/en not_active Expired - Fee Related
- 1988-03-15 EP EP88400617A patent/EP0285486B2/en not_active Expired - Lifetime
- 1988-03-15 AT AT88400617T patent/ATE56493T1/en active
- 1988-03-15 ES ES88400617T patent/ES2018079T5/en not_active Expired - Lifetime
- 1988-03-22 DK DK154688A patent/DK171149B1/en not_active IP Right Cessation
- 1988-03-22 CA CA000562130A patent/CA1324704C/en not_active Expired - Fee Related
- 1988-03-22 PT PT87043A patent/PT87043B/en not_active IP Right Cessation
- 1988-03-22 FI FI881368A patent/FI94971C/en not_active IP Right Cessation
- 1988-03-22 IE IE84188A patent/IE60108B1/en not_active IP Right Cessation
- 1988-03-23 JP JP63069223A patent/JPH0723596B2/en not_active Expired - Fee Related
-
1990
- 1990-12-11 GR GR90401051T patent/GR3001183T3/en unknown
-
1998
- 1998-03-13 GR GR980400527T patent/GR3026342T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK154688D0 (en) | 1988-03-22 |
| FR2612960B1 (en) | 1989-06-16 |
| IE880841L (en) | 1988-09-23 |
| CA1324704C (en) | 1993-11-30 |
| FI94971B (en) | 1995-08-15 |
| ES2018079T5 (en) | 1998-02-16 |
| PT87043B (en) | 1992-07-31 |
| IE60108B1 (en) | 1994-06-01 |
| ES2018079B3 (en) | 1991-03-16 |
| EP0285486B2 (en) | 1997-12-17 |
| NO174012C (en) | 1994-03-02 |
| GR3001183T3 (en) | 1992-06-30 |
| FI881368A0 (en) | 1988-03-22 |
| ATE56493T1 (en) | 1990-09-15 |
| NO174012B (en) | 1993-11-22 |
| EP0285486A1 (en) | 1988-10-05 |
| DE3860586D1 (en) | 1990-10-18 |
| DK154688A (en) | 1988-09-24 |
| JPS63256795A (en) | 1988-10-24 |
| FI881368A (en) | 1988-09-24 |
| FI94971C (en) | 1995-11-27 |
| NO881030D0 (en) | 1988-03-08 |
| NO881030L (en) | 1988-09-26 |
| FR2612960A1 (en) | 1988-09-30 |
| EP0285486B1 (en) | 1990-09-12 |
| JPH0723596B2 (en) | 1995-03-15 |
| GR3026342T3 (en) | 1998-06-30 |
| PT87043A (en) | 1988-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |
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