EP0715020B1 - Verwendung eines Beschichtungsmittels für Papieroberflächen - Google Patents
Verwendung eines Beschichtungsmittels für Papieroberflächen Download PDFInfo
- Publication number
- EP0715020B1 EP0715020B1 EP95118737A EP95118737A EP0715020B1 EP 0715020 B1 EP0715020 B1 EP 0715020B1 EP 95118737 A EP95118737 A EP 95118737A EP 95118737 A EP95118737 A EP 95118737A EP 0715020 B1 EP0715020 B1 EP 0715020B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating agent
- polymer
- paper
- agent according
- coating
- 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
Links
Images
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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/02—Metal coatings
- D21H19/08—Metal coatings applied as vapour, e.g. in vacuum
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Definitions
- the invention relates to the use of a coating agent for paper surfaces.
- Disadvantageous is compared to applying the polymer coating from solution in an organic Solvent also the layer thickness tolerance, i.e. that of organic solvents applied polymer film is more uniform and has a more uniform thickness than that polymers applied from aqueous dispersion.
- compositions based on Polymer emulsions or dispersions for use in a wide variety of purposes, including also described as a coating agent, the polymer emulsions or dispersions Contain polymer particles of different sizes.
- the polymer emulsions or dispersions Contain polymer particles of different sizes.
- the problem is not in any of the above documents addressed a paper to be coated with metals such as aluminum.
- paper surfaces with polymer dispersions coating from aqueous dispersion include EP-A-0 173 300, US-A-3,113,888, DE 32 25 658 C1, DE 30 24 259 A and JP-A-5 195 487 (as WPI summary).
- EP-A-0 173 300 US-A-3,113,888
- DE 32 25 658 C1 DE 30 24 259 A
- JP-A-5 195 487 (as WPI summary).
- papers with an aqueous polymer dispersion prior to metallization coated The advantages of a bimodal particle size distribution are none of these Cited citations.
- the object of the invention is therefore to avoid a coating agent, avoiding organic solvents, especially for paper surfaces to be vacuum coated with metal
- a coating agent avoiding organic solvents, especially for paper surfaces to be vacuum coated with metal
- anilox rollers or gravure technology comes here because of the exact dosing meaning of the order.
- the cells of the screen or the gravure rollers clog after a short term. Even with a high degree of dilution with solids contents This clogging occurs by 13% after a longer period of coagulation under the doctor blade.
- a coating agent for Paper surface coating from Paper which is then steamed with metals, or of paper coated with metals, containing an aqueous polymer dispersion, which in the aqueous phase a mixture disperses polymer particles of an average particle size from 0.2 to 5 ⁇ m, preferably 0.3 to 2 ⁇ m, and particles with an average particle size of less than 0.1 ⁇ m, preferably less than 0.07 ⁇ m.
- the mixing ratio of coarser polymer particles that are cross-linked or also uncross-linked can be to the finer polymer particles present as microdispersion or hydrosol can vary widely, but is preferably 1: 1 (50:50) to 9: 1 (9th : 1), but is preferably in the range from 1.5: 1 (60:40) to 3: 1.
- aqueous dispersion consisting of polymer particles of larger diameter and very fine-particle polymers with hydrosol character usually have dispersants for the two Polymer components that advantageously have different surface tensions.
- Suitable dispersants are e.g. B. fatty alcohol oxyethylates and / or carboxylic acid salts.
- polymers for both the coarser fraction and the finely divided microdispersion or the hydrosol are the known polymers that can be used for paper coating, preferably based on acrylic esters such as ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate suitable as polymers based on ethyl / vinyl acetate copolymers, polyurethanes, Copolymers of acrylate / vinyl acetate as well as copolymers based on styrene and acrylates.
- acrylic esters such as ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate suitable as polymers based on ethyl / vinyl acetate copolymers, polyurethanes, Copolymers of acrylate / vinyl acetate as well as copolymers based on styrene and acrylates.
- the solids content of the coating composition is in the range from 20 to 50% solids or polymer content, but can vary depending on the application the solids content also vary more.
- the polymers used according to the invention are known commercial products.
- the particle size of the finely divided polymer is so small that the solution appears almost crystal clear and is hardly optically detectable when light falls through, rather almost the same refractive index like water has. Products of this type can also be referred to as hydrosols become.
- the fine-particle polymers are not cross-linked due to their hydrosol character.
- the coating agent meets the highest quality standards. Moreover the coating agent is characterized by extraordinary economy out because dosage and related accuracy of setting the Layer thicknesses can be done using anilox roller technology.
- the papers coated with the coating agent stand out due to a high homogeneity of the applied layer and only a small layer thickness tolerance out. This advantageous result is achieved both with anilox rollers and with application of rotogravure technology.
- Figure 1 shows the distribution of coarser polymer particles (5) and the finest particles of Hydrosols (6), wherein it can be seen that the space between the relatively large polymer particles is filled up with the particles of the hydrosol (6) which are smaller by a factor of 50.
- Figure 2 illustrates the penetration depth PE in the paper surface, the vector PTg the Particle size of the coating results.
- Figure 3 shows a section through a coated paper.
- the real one, formed by fibers Paper layer (3) is up through the conventional paper line (2) and down completed by the back preparation (4).
- the top finishing layer (1) are no longer contain fibers of the base paper (value 0), while some fibers still remain in the conventional paper line (2) and increasingly protrude into the back preparation (4).
- the coating agent offers the further advantage of every polymer component to be able to vary for special tasks.
- the finely divided Component can be kept soft and flexible and experience has shown that it is deeper in penetrates the paper line (see Figure 2 schematically), while the coarser dispersion particles, intended for scratch-resistant surface formation, arrange closer to the surface.
- a third can also be used for the purpose of further varying the surface properties
- Component e.g. B. finely emulsified synthetic wax or polyethylene can be used, at z. B. to achieve hydrophobic surfaces.
- the gas permeability can also be controlled. So the required high water impermeability can be achieved by a third component, e.g. B. Priming due to water vapor barrier with ethylene-acrylate copolymers.
- the Compostability can be increased by suitable additives such as nitrated water-soluble cellulose so be influenced. It has been shown that the use of such an additive of putrefactive bacteria can be enlarged, resulting in shorter composting times of the paper so coated.
- the coating agent with two different polymer phases is not only as a coating in preparation for metal vapor deposition, especially in a vacuum suitable, but also as a primer coat, which after the application of the Metal layer is applied to z. B. to be able to print on the paper.
- a good liability the printing ink in such a way that it does not come off has so far only been made with polymer coatings achieved organic solvents.
- the invention is illustrated by the following example, parts by weight: 70 parts of an aqueous acrylic acid ester dispersion with a particle size of 0.5 to 2 ⁇ m (type Lefasol 206, manufacturer Lefatex-Chemie GmbH) are mixed with 30 parts hydrosol with a particle size of 0.05 ⁇ (type Hydrosol 900, manufacturer Lefatex) with stirring, whereby a liquid dispersion varnish with a polymer content of 37 ( ⁇ 2%) is created.
- This varnish is applied to a label paper of 70 g / m 2 with an anilox roller and then dried. A glossy, closed film remains on the paper, which can be metallized very well. After vacuum evaporation with aluminum, the sensitive aluminum layer is protected with the primer, which is applied over anilox rollers and dried.
- the primer also serves as an adhesion promoter for any further treatments, e.g. B. for prints.
- Another advantage of the coating agent is the high solids content at usual use viscosities.
- the polymers dissolved in the organic solvent according to the prior art have a viscosity at a solids content of 20% from about 18 to 22 seconds in a DIN cup. With an anilox roller technology applied With the required viscosities, a solids content of 40% (polymer) can be achieved which leads to a significant reduction in costs.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Description
70 Teile einer wäßrigen Acrylsäureesterdispersion einer Teilchengröße von 0,5 bis 2 µm (Typ Lefasol 206, Hersteller Lefatex-Chemie GmbH) werden mit 30 Teilen Hydrosol einer Teilchengröße von 0,05 µ (Typ Hydrosol 900, Hersteller Lefatex) unter Rühren gemischt, wobei ein flüssiger Dispersionslack mit einem Polymergehalt von 37 (± 2 %) entsteht. Dieser Lack wird auf ein Etikettenpapier von 70 g/m2 mit einer Rasterwalze aufgetragen und danach getrocknet. Es bleibt ein glänzender, geschlossener Film auf dem Papier, der sehr gut metallisierbar ist. Nach der Vakuumbedampfung mit Aluminium wird die empfindliche Aluminiumschicht mit dem Primer, der über Rasterwalzen aufgetragen und getrocknet wird, geschützt.
Claims (9)
- Verwendung eines Beschichtungsmittels zur Papieroberflächenbeschichtung von Papier, welches anschließend mit Metallen bedampft wird, oder von mit Metallen beschichtetem Papier, enthaltend eine wäßrige Polymerdispersion, dadurch gekennzeichnet, daß es in wäßriger Phase dispergiert eine Mischung aus Polymerteilchen (5) einer mittleren Teilchengröße von 0,2 bis 5 µm, bevorzugt 0,3 bis 2 µm, sowie Teilchen (6) einer mittleren Teilchengröße von kleiner 0,1 µm, bevorzugt kleiner 0,07 µm, enthält.
- Verwendung eines Beschichtungsmittels nach Anspruch 1, dadurch gekennzeichnet, daß das Mischungsverhältnis von gröberen Polymerteilchen (5) zu den feineren Teilchen (6) im Bereich von 1 : 1 bis 9 : 1, bevorzugt im Bereich von 1,5 : 1 bis 3 : 1 liegt.
- Verwendung eines Beschichtungsmittels nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es unterschiedliche Dispergiermittel für die beiden Polymerkomponenten mit unterschiedlicher Oberflächenspannung enthält.
- Verwendung eines Beschichtungsmittels nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Beschichtungsmittel Verdicker, bevorzugt auf Zellulosebasis, enthält.
- Verwendung eines Beschichtungsmittels nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß es Pigmente mit physikalischer Sperrwirkung, bevorzugt blättchenförmige Pigmente auf Basis von Glimmer, Schichtsilikaten und/oder Clay enthält.
- Verwendung eines Beschichtungsmittels nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mindestens eine Komponente mit wasserlöslichem Farbstoff gefärbt ist.
- Verwendung eines Beschichtungsmittels nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß es einen oberflächenaktiven Zusatz, bevorzugt Siliconöl, ein Fluortensid und/oder Glättungsmittel, bevorzugt Wachs oder Aluminiumstearat, enthält.
- Verwendung eines Beschichtungsmittels nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Erweichungsbereich einer Polymerkomponente durch einen Zusatz, bevorzugt von Ethylen/Vinylacetat-Copolymeren, so weit herabgesetzt wird, daß die Beschichtung heißsiegelbar ist.
- Verwendung eines Beschichtungsmittels nach einem der Ansprüche 1 bis 8, gekennzeichnet durch einen Feststoffgehalt von 20 bis 50 %, bezogen auf den Polymergehalt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9530423T SI0715020T1 (en) | 1994-12-02 | 1995-11-29 | Use of a coating agent for paper surfaces |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9419333U DE9419333U1 (de) | 1994-12-02 | 1994-12-02 | Beschichtungsmittel für Papieroberflächen |
DE9419333U | 1994-12-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0715020A1 EP0715020A1 (de) | 1996-06-05 |
EP0715020B1 true EP0715020B1 (de) | 2000-07-26 |
Family
ID=6916896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95118737A Expired - Lifetime EP0715020B1 (de) | 1994-12-02 | 1995-11-29 | Verwendung eines Beschichtungsmittels für Papieroberflächen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0715020B1 (de) |
AT (1) | ATE195010T1 (de) |
CA (1) | CA2164154A1 (de) |
DE (2) | DE9419333U1 (de) |
FI (1) | FI955796A (de) |
SI (1) | SI0715020T1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9823499D0 (en) * | 1998-10-27 | 1998-12-23 | Proman Chem Ltd | Barrier coatings |
ITUD20030221A1 (it) * | 2003-11-11 | 2005-05-12 | Metalpack Srl | Procedimento per la produzione di carta metallizzata e carta metallizzata prodotta mediante tale procedimento. |
CA2552370C (en) * | 2003-12-30 | 2012-03-27 | Sarriopapel Y Celulosa, S.A. | Method to manufacture metallized paper with curtain coating |
CN104562841B (zh) * | 2014-12-26 | 2017-01-11 | 上海维凯光电新材料有限公司 | 一种可油墨驻留的水性环保型直镀啤酒标底面涂料 |
CN105821706B (zh) * | 2015-09-14 | 2017-07-07 | 上海洛法化工有限公司 | 一种幕帘涂布涂料粘度改进剂及其制备工艺 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113888A (en) * | 1961-03-03 | 1963-12-10 | Nat Starch Chem Corp | Direct method for metalization of cast-coated paper |
DE3024259A1 (de) * | 1979-06-29 | 1981-01-08 | Mitsui Petrochemical Ind | Metallbeschichtetes papier und verfahren zu dessen herstellung |
DE3225658C1 (de) * | 1982-07-09 | 1984-01-05 | Zanders Feinpapiere AG, 5060 Bergisch Gladbach | Metallisiertes Papier und Verfahren zur Herstellung sowie dessen Verwendung |
EP0173300A1 (de) * | 1984-08-29 | 1986-03-05 | National Starch and Chemical Corporation | Wässrige oberflächenaktivmittelfreie Grundschicht für metallisiertes Papier |
JPH05195487A (ja) * | 1992-01-14 | 1993-08-03 | Kanzaki Paper Mfg Co Ltd | 金属蒸着紙 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779800A (en) * | 1968-05-27 | 1973-12-18 | Dow Chemical Co | Coatings containing plastic pigments |
DE3017543A1 (de) * | 1980-05-08 | 1981-11-26 | Bayer Ag, 5090 Leverkusen | Waessrige dispersionen auf basis von (meth)acrylsaeurealkylester-polymerisaten mit zwei ausgepraegten, praktisch sich nicht ueberlappenden maxima in der teilchengroessenverteilung innerhalb spezieller teilchengroessenbereiche, sowie verfahren zu ihrer herstellung und ihre verwendung |
DE3036969A1 (de) * | 1980-10-01 | 1982-05-13 | Hoechst Ag, 6000 Frankfurt | Schutzkolloidfreie kunststoffdispersionen mit bimodaler partikelgroessenverteilung |
JPS6028463A (ja) * | 1983-07-26 | 1985-02-13 | Nippon Paint Co Ltd | 水性塗料組成物 |
DE3405651A1 (de) * | 1984-02-17 | 1985-08-22 | Röhm GmbH, 6100 Darmstadt | Pulverfoermige emulsionspolymerisate und verfahren zu ihrer herstellung |
US4824877A (en) * | 1988-02-02 | 1989-04-25 | Dow Corning Corporation | High polymer content silicone emulsions |
US5258424A (en) * | 1988-06-15 | 1993-11-02 | Nippon Paint Co., Ltd. | Aqueous coating composition capable of forming a coating with improved moisture permeability |
DE4029491A1 (de) * | 1990-09-18 | 1992-03-19 | Feldmuehle Ag | Beschichtetes papier |
DE59104971D1 (de) * | 1991-05-31 | 1995-04-20 | Sellotape Ag | Selbstklebende Acrylat-Copolymere, Verfahren zu deren Herstellung, und selbstklebende Flächengebilde, die diese enthalten. |
FR2712296B1 (fr) * | 1993-11-10 | 1996-01-12 | Rhone Poulenc Chimie | Liant latex pour composition de revêtement. |
DE4340943A1 (de) * | 1993-12-01 | 1995-06-08 | Hoechst Ag | Wäßrige Dispersion von Fluorpolymerisaten, ihre Herstellung und Verwendung für Beschichtungen |
-
1994
- 1994-12-02 DE DE9419333U patent/DE9419333U1/de not_active Expired - Lifetime
-
1995
- 1995-11-29 AT AT95118737T patent/ATE195010T1/de not_active IP Right Cessation
- 1995-11-29 SI SI9530423T patent/SI0715020T1/xx unknown
- 1995-11-29 DE DE59508600T patent/DE59508600D1/de not_active Expired - Fee Related
- 1995-11-29 EP EP95118737A patent/EP0715020B1/de not_active Expired - Lifetime
- 1995-11-30 CA CA002164154A patent/CA2164154A1/en not_active Abandoned
- 1995-12-01 FI FI955796A patent/FI955796A/fi unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113888A (en) * | 1961-03-03 | 1963-12-10 | Nat Starch Chem Corp | Direct method for metalization of cast-coated paper |
DE3024259A1 (de) * | 1979-06-29 | 1981-01-08 | Mitsui Petrochemical Ind | Metallbeschichtetes papier und verfahren zu dessen herstellung |
DE3225658C1 (de) * | 1982-07-09 | 1984-01-05 | Zanders Feinpapiere AG, 5060 Bergisch Gladbach | Metallisiertes Papier und Verfahren zur Herstellung sowie dessen Verwendung |
EP0173300A1 (de) * | 1984-08-29 | 1986-03-05 | National Starch and Chemical Corporation | Wässrige oberflächenaktivmittelfreie Grundschicht für metallisiertes Papier |
JPH05195487A (ja) * | 1992-01-14 | 1993-08-03 | Kanzaki Paper Mfg Co Ltd | 金属蒸着紙 |
Also Published As
Publication number | Publication date |
---|---|
CA2164154A1 (en) | 1996-06-03 |
DE59508600D1 (de) | 2000-08-31 |
EP0715020A1 (de) | 1996-06-05 |
SI0715020T1 (en) | 2000-10-31 |
DE9419333U1 (de) | 1995-01-26 |
FI955796A0 (fi) | 1995-12-01 |
FI955796A (fi) | 1996-06-03 |
ATE195010T1 (de) | 2000-08-15 |
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