EP0737777B2 - Procédé de collage en surface du papier - Google Patents

Procédé de collage en surface du papier Download PDF

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Publication number
EP0737777B2
EP0737777B2 EP96200939A EP96200939A EP0737777B2 EP 0737777 B2 EP0737777 B2 EP 0737777B2 EP 96200939 A EP96200939 A EP 96200939A EP 96200939 A EP96200939 A EP 96200939A EP 0737777 B2 EP0737777 B2 EP 0737777B2
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EP
European Patent Office
Prior art keywords
starch
paper
amylopectin
potato
degraded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96200939A
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German (de)
English (en)
Other versions
EP0737777B1 (fr
EP0737777A1 (fr
Inventor
Ate Faber
Anne Coenraad Hulst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cooperative Avebe UA
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Cooperative Avebe UA
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Application filed by Cooperative Avebe UA filed Critical Cooperative Avebe UA
Publication of EP0737777A1 publication Critical patent/EP0737777A1/fr
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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
    • 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

Definitions

  • This invention relates to a method for surface sizing paper, in which use is made of degraded amylopectin potato starch products.
  • Paper and paperboard are often surface sized with sizing agents to improve the physical properties of paper and paperboard.
  • the size binds the cellulose fibers of paper to each other and to the paper sheet, whereby the tensile strength and the bursting strength of the paper are increased.
  • an eraser without the fiber structure of the paper being destroyed.
  • Surface sizing gives the paper a relatively smooth, hard surface layer, which counteracts the extraction of cellulose fibers when the paper is being written on with pen and ink. This surface layer further prevents the tip of the pen, biro or pencil from becoming hooked in the paper when the paper is being written on.
  • surface sizing reduces the porosity of the paper, since the surface pores of the paper are sealed. Thus the resistance to water and oil as well as the printability are increased.
  • Surface sizing is important inter alia for writing paper, paper to be printed and certain kinds of packaging paper.
  • degraded starch products are used as surface sizing agent for paper.
  • degraded starch products is herein understood to mean those starch products which, as a result of partial depolymerisation of the starch molecules (by means of acids, oxidants and/or enzymes), possess a reduced average molecular weight and a reduced viscosity in water.
  • Degraded native starches, degraded starch esters and degraded starch ethers are used.
  • Useful types of starch include potato starch, maize starch, wheat starch, tapioca starch, and waxy maize starch.
  • starch consist of granules in which two types of glucose polymers occur, viz. amylose (from 15 to 35% by weight, based on dry substance) and amylopectin (from 65 to 85% by weight, based on dry substance).
  • Amylose consists of unbranched or little branched molecules of an average degree of polymerisation of from 1000 to 5000 (depending on the type of starch).
  • Amylopectin consists of very large, highly branched molecules of an average degree of polymerisation of about 2,000,000.
  • the commercially most important types of starch viz. maize starch, potato starch, wheat starch and tapioca starch, contain from 15 to 30% by weight of amylose.
  • starch granules of which consist substantially entirely of amylopectin are produced by various types of cereal, viz. barley, maize, millet, milo, rice and sorghum.
  • these starch granules contain more than 95% and usually more than 98% of amylopectin.
  • the amylose content of these cereal starch granules is therefore less than 5% and usually less than 2%. It has been found that during the formation of amylopectin cereal starch granules in the cereal plant, the enzyme that catalyzes the synthesis of amylose molecules is absent.
  • the above cereal varieties are sometimes referred to as waxy cereal grains and the amylopectin starch granules isolated therefrom as waxy cereal starches.
  • amylopectin potato starch is herein understood to mean the potato starch granules obtained from potato tubers obtained from genetically modified potato plants which form said granules in the potato tubers, said starch granules comprising more than 95% by weight, based on dry substance, of amylopectin.
  • waxy maize starch which is commercially by far the most important waxy cereal starch.
  • the growth of waxy maize, which is suitable for the production of waxy maize starch, is not commercially feasible in countries with a cold or temperate climate, such as the Netherlands, Belgium, England, Germany, Tru, Sweden, and Denmark. However, the climate in the above countries is suitable for the growth of potatoes.
  • amylopectin potato starch differs from those of the waxy cereal starches. For instance, amylopectin potato starch has a much lower content of lipids and proteins than the waxy cereal starches do. Problems regarding odor and foam formation, which may arise because of the lipids and/or proteins when using waxy cereal starch products (native and modified), do not occur, or do so to a much lesser extent, when use is made of corresponding amylopectin potato starch products. As opposed to the waxy cereal starches, amylopectin potato starch contains chemically bound phosphate groups. As a result, in dissolved condition amylopectin potato starch products possess a specific polyelectrolyte character.
  • degraded amylopectin potato starch granules isolated from certain potato tubers are eminently suitable as a surface sizing agent for paper.
  • strength improvement of the paper surface strength; bursting strength; tensile strength
  • the degraded amylopectin potato starch derivatives give equivalent or better results compared with corresponding derivatives based on other types of starch.
  • the invention accordingly relates to a method for surface sizing paper wherein amylopectin potato starch granules isolated from potato tubers obtained from genetically modified potato plants which form said starch granules in the potato tubers, said starch granules comprising more than 95 % by weight, based on dry substance, of amylopectin, are degraded and wherein an aqueous solution of the degraded amylopectin potato starch is applied to the paper, whereafter the sized paper is dried.
  • the starch is partially depolymerized. Partial depolymerisation of the amylopectin potato starch reduces the viscosity of the starch solution used, which enables the use of starch solutions having an increased dry matter content compared with solutions of non-degraded starch. The partial depolymerization of the starch also enhances its ability to penetrate between the cellulose fibers and to bind the surface fibers together.
  • degrading starch there are various methods for degrading starch, in which use can be made of oxidants, acids and/or enzymes.
  • the degradation can take place at the starch manufacturer's, whereby typically an oxidized or acid-degraded ungelatinized, granular starch product is obtained, which is gelatinized in the paper factory.
  • the degradation of the starch can also be carried out in the paper factory, whereby the starch, typically in gelatinized condition, is treated with enzymes (enzymatic conversion) or with oxidants (thermal chemical conversion).
  • the extent of degradation is dependent on the starting starch material, the operating conditions during surface sizing and the desired paper properties.
  • amylopectin potato starch Before, during or after the degradation reaction, the amylopectin potato starch can additionally be modified chemically by esterification or etherification.
  • the invention further comprises the use of additionally modified degraded amylopectin potato starch derivatives.
  • the viscosity of the solutions of degraded amylopectin potato starch to be used according to the invention is preferably between 4 and 1000 mPa.s and most preferably between 10 and 100 mPa.s, measured with a Brookfield viscosimeter (type LVT at 60 rpm) at a dry matter concentration of the starch of 8% by weight and a temperature of 35°C.
  • the solutions of degraded amylopectin potato starch can be applied to paper or paperboard using the known application techniques.
  • application equipment with presses, grooved rolls and calender sets are used.
  • the surface sizing is performed in that the sheet of paper is guided between a pair of pressing rolls, with the lower roll of the pair rotating in a bath with the starch solution. The surface of this roll entrains the size and applies it to the underside of the paper sheet.
  • the starch solution can also be applied to the top side of the paper sheet, to which effect the starch solution is sprayed into the slit between the paper sheet and the upper roll or against the upper roll, so that the starch solution is disposed on the top side of the paper sheet as it enters the press.
  • the paper sheet is passed between rolls in order to drive the starch solution into the paper and also to remove excess starch solution.
  • the distance between the size press rolls is set in such a manner that the rolls exert sufficient pressure to control the penetration of the starch solution into the paper. Thereafter the surface sized paper sheets are dried.
  • the degraded amylopectin potato starch can also be applied to the paper sheet utilizing an air knife, a trailing knife, a champion knife or a calender.
  • the starch concentration of the starch solution to be applied to the paper sheet can vary between 2 and 20% by weight.
  • the amount of starch product which is applied can vary between 0.25 and 15% by weight of starch, calculated as dry substance with respect to the dry weight of the paper (SW52).
  • degraded potato starch (containing about 80% amylopectin), degraded waxy maize starch (containing more than 95% amylopectin) and degraded amylopectin potato starch (containing more than 95% amylopectin) of comparable viscosity were compared with each other with regard to the use as surface sizing agent for paper.
  • Potato starch, waxy maize starch and amylopectin potato starch were gelatinized and degraded (converted) to a comparable viscosity.
  • the conversion was carried out continuously in a so-called jet cooker (steam injection device) with hydrogen peroxide (as oxidant) at a starch concentration of 30% by weight (in water) and a boiling temperature of 140°C. This method of conversion is referred to as thermochemical conversion.
  • the aqueous solution of degraded starch flowing from the jet cooker was diluted with water to a starch concentration of 8% by weight.
  • the viscosity of the starch solution obtained was measured with a Brookfield viscosimeter (type LVT) at 60 rpm and a temperature of 35°C. This viscosity was 8 mPa.s for all three types of degraded starch (potato starch, waxy maize starch, and amylopectin potato starch).
  • the starch solutions (8% by weight of starch; temperature 50°C) were applied to a base paper (type Van Gelder) using a horizontal size press (type T.H. Dixon; model 160-B; roll hardness 80 shore).
  • the machine speed of the Dixon was 50 m/min and the line pressure was 7 kg/cm.
  • the surface sized paper was thereafter dried to 5% by weight of moisture.
  • the paper samples obtained were conditioned at 23°C and 50% relative humidity.
  • Table 1 specifies the paper properties obtained when using degraded potato starch (AZM-1), degraded waxy maize starch (WMZM-1) and degraded amylopectin potato starch (AAZM-1). TABLE 1 Paper properties Starch Starch content Wt. % Sheet weight g/m 2 Porosity Gurley s/100ml Bursting strength IGT dry pick Tensile strength kN/m kN/m 2 ZZ VZ MR DR AZM-1 3.3 74.5 29 250 2860 1770 5.1 2.5 WMZM-1 3.2 74.3 28 242 2880 2100 4.9 2.3 AAZM-1 3.3 75.0 32 262 4860 3270 5.3 2.5

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  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Fruits And Vegetables (AREA)

Claims (5)

  1. Procédé de collage en surface de papier dans lequel des granules de fécule de pomme de terre à base d'amylopectine isolés à partir de tubercules de pomme de terre obtenus à partir de plants de pomme de terre génétiquement modifiés qui forment lesdits granules de fécule dans les tubercules de pomme de terre, lesdits granules d'amidon comprenant plus de 95% en poids, en de fécule sèche, d'amylopectine, sont dégradés, et dans lequel une solution aqueuse de la fécule de pomme de terre à base d'amylopectine dégradée est appliquée sur le papier, après quoi le papier collé est séché.
  2. Procédé selon la revendication 1, caractérisé en ce que la fécule d'amylopectine a été isolée de pommes de terre provenant de plants de pommes de terre obtenus au moyen d'une mutation.
  3. Procédé selon la revendication 1, caractérisé en ce que la fécule d'amylopectine a été isolée de pommes de terre provenant de plants de pomme de terre obtenus au moyen d'une inhibition anti-sens.
  4. Procédé selon les revendications 1 à 3, caractérisé en ce que la viscosité de la solution aqueuse de la fécule de pommes de terre d'amylopectine dégradée est comprise entre 4 et 1 000 mPa.s mesurée avec un viscosimètre Brookfield (type LVT ; à 60 tr/mn) avec une concentration en fécule de 8% en poids et à une température de 35°C.
  5. Procédé selon les revendications 1 à 3, caractérisé en ce que la viscosité de la solution aqueuse de la fécule de pommes de terre d'amylopectine dégradée est comprise entre 10 et 100 mPa.s mesurée avec un viscosimètre Brookfield (type LVT ; à 60 tr/mn) avec une concentration en fécule de 8% en poids et à une température de 35°C.
EP96200939A 1995-04-10 1996-04-10 Procédé de collage en surface du papier Expired - Lifetime EP0737777B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000104 1995-04-10
NL1000104A NL1000104C2 (nl) 1995-04-10 1995-04-10 Werkwijze voor het oppervlaktelijmen van papier en aldus verkregen papier.

Publications (3)

Publication Number Publication Date
EP0737777A1 EP0737777A1 (fr) 1996-10-16
EP0737777B1 EP0737777B1 (fr) 2001-11-07
EP0737777B2 true EP0737777B2 (fr) 2007-08-15

Family

ID=19760861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200939A Expired - Lifetime EP0737777B2 (fr) 1995-04-10 1996-04-10 Procédé de collage en surface du papier

Country Status (7)

Country Link
EP (1) EP0737777B2 (fr)
AT (1) ATE208447T1 (fr)
DE (1) DE69616632T3 (fr)
DK (1) DK0737777T4 (fr)
ES (1) ES2168434T5 (fr)
NL (1) NL1000104C2 (fr)
PT (1) PT737777E (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408996B (de) * 1996-08-01 2002-04-25 Tulln Zuckerforschung Gmbh Faserbehandlungsmittel
EP0824161A3 (fr) * 1996-08-12 1998-04-08 Südzucker Aktiengesellschaft Mannheim/Ochsenfurt L'amidon et des dérivés d'amidon pour l'industrie papetière
AT403705B (de) * 1996-08-12 1998-05-25 Tulln Zuckerforschung Gmbh Beschichtungsmittel
NL1005141C2 (nl) * 1997-01-30 1998-08-03 Avebe Coop Verkoop Prod Amylopectine-aardappelzetmeelproducten als sterkmiddel voor textielgarens.
EP3222779A1 (fr) 2016-03-22 2017-09-27 Jäckering Mühlen- und Nährmittelwerke GmbH Masse de revetement amylacee

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931422A (en) † 1974-10-04 1976-01-06 Standard Oil Company Polyester/starch paper sizing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859108A (en) * 1971-05-07 1975-01-07 Lawrence Paper Co Flour based paper size
SE467358B (sv) * 1990-12-21 1992-07-06 Amylogene Hb Genteknisk foeraendring av potatis foer bildning av staerkelse av amylopektintyp
GB9112645D0 (en) * 1991-06-12 1991-07-31 Cambridge Advanced Tech Modification of starch production
CA2061443C (fr) * 1992-02-18 2001-04-10 Richard G. F. Visser Plant de pommes de terre produisant de l'amidon essentiellement exempt d'amylose

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931422A (en) † 1974-10-04 1976-01-06 Standard Oil Company Polyester/starch paper sizing

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
A.G. Heyer, Kartoffelbau (1992) 43, (12), 500-503 †
C. Palm et al., WfP (1991) 5, 149-156 †
C.T. Beals, in "Dry Strength Additives" (W.F. Reynolds, Ed.) Tappi Press (1980) 33-65 †
M.J. Kocurek, Plant Physiol. (1992) 100, 1083-1086 †

Also Published As

Publication number Publication date
DK0737777T4 (da) 2007-12-03
DK0737777T3 (da) 2002-03-04
DE69616632T3 (de) 2008-03-06
NL1000104C2 (nl) 1996-10-11
ES2168434T5 (es) 2008-04-01
EP0737777B1 (fr) 2001-11-07
ATE208447T1 (de) 2001-11-15
DE69616632T2 (de) 2002-08-08
DE69616632D1 (de) 2001-12-13
ES2168434T3 (es) 2002-06-16
PT737777E (pt) 2002-04-29
EP0737777A1 (fr) 1996-10-16

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