EP1322816B1 - Verfahren zur behandlung von papierbahnen für die herstellung von mit kunstharzen zu imprägnierendes papier - Google Patents

Verfahren zur behandlung von papierbahnen für die herstellung von mit kunstharzen zu imprägnierendes papier Download PDF

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Publication number
EP1322816B1
EP1322816B1 EP00966591A EP00966591A EP1322816B1 EP 1322816 B1 EP1322816 B1 EP 1322816B1 EP 00966591 A EP00966591 A EP 00966591A EP 00966591 A EP00966591 A EP 00966591A EP 1322816 B1 EP1322816 B1 EP 1322816B1
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EP
European Patent Office
Prior art keywords
paper
mixture
resin
synthetic resins
drying
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
EP00966591A
Other languages
English (en)
French (fr)
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EP1322816A1 (de
Inventor
Ernst Heller
Eugen Edel
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.)
Technocell Dekor GmbH and Co KG
Original Assignee
Technocell Dekor GmbH and Co KG
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Publication of EP1322816A1 publication Critical patent/EP1322816A1/de
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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
    • D21H23/22—Addition to the formed paper
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • D21H23/72—Plural serial stages only
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures

Definitions

  • the present invention relates to a method of processing paper webs for the manufacture of paper for impregnation with synthetic resins, comprising the following steps.
  • the invention will find application mainly in the field of stratification stratification high and / or low pressure supports such as particle board, wood fiber, plywood or other.
  • Dekorpapier is a paper intended for impregnation with synthetic resins. This paper is, after printing or not, impregnated to be stamped (lamination) on supports such as particle board, wood fiber board, plywood or other.
  • Such “laminate” supports are used as a replacement for wood in the furniture industry, as well as for floor coverings, wall coverings and the like.
  • impregnation is carried out by means of different chemical mixtures based on resins.
  • the material thus obtained is applied to the physical medium to be covered, for example the panel of a piece of furniture.
  • the current "Dekorpapier” is therefore a paper as it is, without pretreatment.
  • the document WO-A-94/12347 shows the manufacture of an applicable film on panels. This film is impregnated with resins before other treatments.
  • EP-A-0022153 discloses a method of making decorative paper. This is a finishing step by successive coatings without treatment at heart.
  • the document FR-A-2414578 shows support materials containing a duroplastic resin by complete impregnation and a radiation curable polyester resin coating. According to this document, complete impregnation is still carried out and the manufacturing procedure is very complex.
  • EP-A-0875623 also shows a process for making decorative paper with conventional steps and in particular a complete impregnation of the paper.
  • a gravure printing is performed by which the ink tends to diffuse inside the "Dekorpapier" because of too much porosity thereof.
  • the current processes implement a step of impregnating the paper web with resins.
  • the present invention aims to overcome the disadvantages of currently used methods.
  • pretreatment steps are carried out whose purposes and advantages are introduced hereinafter.
  • the object of the invention is to significantly improve the quality of these papers and at the same time to obtain a reduction of certain products used as a filler in these technical papers.
  • the rotogravure printing of decorative papers has the characteristic of giving an inaccurate image in the photographic reproduction of the structures of the wood.
  • the invention makes it possible to obtain a different surface from the decor papers, thus making it possible, with the use of modified aqueous printing inks, to fix the photographic image with a better fidelity.
  • these papers are obtained with the following treatment.
  • a paper decorated with standard technical values but with reduced pigment fillers is inserted inside a mixture of melamine-formaldehyde resins, urea formaldehyde, self-crosslinking acrylics and hardeners.
  • calendering is performed to obtain the optimal smoothness for high-fidelity gravure printing.
  • the "Dekorpapier" obtained by the implementation of the invention makes it possible, with an upper smoothness, a printing of a higher fidelity as well as a significant economy of the inks of printing, especially in aqueous inks.
  • the quantities necessary for the final impregnation of the decor paper are greatly reduced without reducing the adhesion to the substrates and / or the surface strength of the finished product.
  • the papers require impregnation with melamine / urea and / or pure melamine resins of a weight approximately equal to the weight of the base papers.
  • the quantity of resins used is substantially reduced with an equivalent final result, that is to say identical mechanical properties (surface resistance and adhesion to the supports).
  • the invention also relates to a paper for impregnation with synthetic resins which is obtained from a paper web by carrying out the process.
  • the figure 1 is a block diagram illustrating the embodiments of the invention according to a preferred variant.
  • paper strips are understood to mean the web initially used for the production of decorative paper and essentially comprising cellulose alfa and optionally TiO 2 (titanium dioxide) type fillers.
  • Pigments can be added.
  • the invention firstly relates to a method of processing paper webs 1 for use in the manufacture of "Dekorpapier".
  • a strip of paper 1 undergoes a first treatment in step numbered 3 constituting an insertion into the paper of a mixture A resin.
  • the mixture A used is a composition of melamine formaldehyde and / or urea formaldehyde and acrylic resins, hardeners and fillers.
  • these strips of paper are surface treated (one or two sides) with a mixture B based on resins preferably identical to the mixture A.
  • This insertion and application step can be carried out with a SIZE-PRESS (Leimpresse / press for take-off) and a "coater-coater", or with a PRESS-FILM uniting the two functions.
  • SIZE-PRESS Leimpresse / press for take-off
  • coater-coater or with a PRESS-FILM uniting the two functions.
  • a drying step 5 is then carried out by means of common means such as drying rollers, infrared rays or the like.
  • This step is marked 6 at the figure 1 .
  • the mixture C may consist of a composition substantially equivalent to that described above for the mixture A.
  • This surface treatment can be performed on one or both sides of the paper web 1.
  • pigments can be added to the mixture. After this surface treatment, a new drying step by common means already mentioned is carried out.
  • a smoothing 7 of the paper strip 1 is carried out on at least one of its faces, for the purpose of successive printing.
  • the smoothing of the paper can be done in a calender or equivalent material.

Landscapes

  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Claims (6)

  1. Verfahren zur Behandlung von Papierbahnen (1) für die Herstellung von Papier zu dem Zweck einer späteren Imprägnierung mit Kunstharzen, das die Stufen:
    - Eindringenlassen (3) eines Gemischs (A) auf der Grundlage von Harzen bis in den Kern des Papiers,
    - Behandeln (4) mindestens einer Seite der Papierbahn (1) durch Aufbringen eines Gemischs (B) auf der Grundlage von Harzen gleichzeitig mit der Stufe (3) des Eindringenlassens des Gemischs (A), wobei die Eindringstufe (3) mit einer Leim- oder Filmpresse, welche die zwei Aufgaben Eindringenlassen und Aufbringen in sich vereinigt, durchgeführt wird,
    - Trocknen (5) des Papiers,
    - Behandeln (6) der Oberfläche mindestens einer Seite der Papierbahn (1) durch Aufbringen eines Gemisches (C) auf der Grundlage von Harzen mit einer Streichmaschine,
    - Trocknen (5) des Papiers und
    - Glätten der Papierbahn (1) auf mindestens einer Seite durch Kalandrieren
    umfasst.
  2. Verfahren nach Anspruch 1, in welchem die Behandlung (4) durch Aufbringen eines Gemisches (B) gleichzeitig mit der Stufe (3) des Eindringenlassens auf beiden Seiten der Papierbahn (1) durchgeführt wird.
  3. Verfahren nach Anspruch 1 oder 2, in welchem die Behandlung (6) der Oberfläche auf beiden Seiten der Bahn (1) durchgeführt wird.
  4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass für das Gemisch (A) und/oder das Gemisch (B) eine Melamin-Formaldehyd-, Harnstoff-Formaldehyd- und Acrylharzzusammensetzung verwendet wird.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass für das Gemisch (C) eine Melamin-Formaldehyd-, Harnstoff-Formaldehyd- und Acrylharzzusammensetzung verwendet wird.
  6. Verfahren nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass die Gemische (A, B, C) mindestens eine Härterkomponente enthalten.
EP00966591A 1999-09-21 2000-09-20 Verfahren zur behandlung von papierbahnen für die herstellung von mit kunstharzen zu imprägnierendes papier Expired - Lifetime EP1322816B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MC2431A MC200022A1 (fr) 1999-09-21 1999-09-21 Systeme eco-decor traitement en phases muliples des papiers destines a la stratification des supports tels que les panneaux de particules les panneaux en fibres de bois les contreplaques ou autres
PCT/MC2000/000001 WO2001021892A1 (fr) 1999-09-21 2000-09-20 Procede de traitement de bandes de papier, et papier pour impregnation par des resines synthetiques

Publications (2)

Publication Number Publication Date
EP1322816A1 EP1322816A1 (de) 2003-07-02
EP1322816B1 true EP1322816B1 (de) 2010-02-03

Family

ID=19738391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00966591A Expired - Lifetime EP1322816B1 (de) 1999-09-21 2000-09-20 Verfahren zur behandlung von papierbahnen für die herstellung von mit kunstharzen zu imprägnierendes papier

Country Status (6)

Country Link
EP (1) EP1322816B1 (de)
AT (1) ATE457044T1 (de)
AU (1) AU2000276922A1 (de)
DE (1) DE60043798D1 (de)
MC (1) MC200022A1 (de)
WO (1) WO2001021892A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MC200104A1 (fr) * 2006-10-26 2007-12-12 Ernst Heller Nouvelle méthode de production de la couche imprimée imitation bois dans le produit sols stratifiés par une machine à papier munie d'une filmpresse etd'une softcalandre

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578483A (en) * 1969-05-14 1971-05-11 Formica Corp Process for improving the printability of the surface of alpha-cellulose paper to be used as the decorative sheet in a decorative laminate
DE2801396A1 (de) * 1978-01-13 1979-07-19 Sued West Chemie Gmbh Duroplastharzbeladene traegermaterialien, ein verfahren zu ihrer herstellung sowie deren verwendung
DE2927746C2 (de) * 1979-07-10 1981-05-27 Th. Goldschmidt Ag, 4300 Essen Verfahren zur Herstellung eines dekorativen Fertigeffektfilmes
DE2949306A1 (de) * 1979-12-07 1981-06-11 Letron GmbH, 8750 Aschaffenburg Kunststoff-furnier sowie verfahren zur herstellung eines kunststoff-furnieres
WO1994012347A1 (en) * 1992-11-24 1994-06-09 Casco Nobel Ab Film composite
DE4413619C2 (de) * 1993-12-02 1996-09-26 Wkp Wuerttembergische Kunststo Verfahren zum Herstellen von Papier und von Laminaten
ES2185076T3 (es) * 1997-04-12 2003-04-16 Ahlstrom Osnabruck Gmbh Soporte de impresion de papel impregnado por una cara.
IT1292294B1 (it) * 1997-04-29 1999-01-29 Liri Ind Srl Metodo per la produzione di carte decorative flessibili e materiale ottenuto con tale metodo.

Also Published As

Publication number Publication date
DE60043798D1 (de) 2010-03-25
WO2001021892A1 (fr) 2001-03-29
AU2000276922A1 (en) 2001-04-24
ATE457044T1 (de) 2010-02-15
EP1322816A1 (de) 2003-07-02
MC200022A1 (fr) 2001-03-28

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