EP1203120A1 - Composition d'impregnation de papier, son procede de production, papier impregne et lamine comprenant ce papier impregne - Google Patents

Composition d'impregnation de papier, son procede de production, papier impregne et lamine comprenant ce papier impregne

Info

Publication number
EP1203120A1
EP1203120A1 EP00936879A EP00936879A EP1203120A1 EP 1203120 A1 EP1203120 A1 EP 1203120A1 EP 00936879 A EP00936879 A EP 00936879A EP 00936879 A EP00936879 A EP 00936879A EP 1203120 A1 EP1203120 A1 EP 1203120A1
Authority
EP
European Patent Office
Prior art keywords
paper
composition
impregnated
papers
glyoxal
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.)
Withdrawn
Application number
EP00936879A
Other languages
German (de)
English (en)
Inventor
Mario Volpatti
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.)
Unidur GmbH
Original Assignee
Unidur GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unidur GmbH filed Critical Unidur GmbH
Publication of EP1203120A1 publication Critical patent/EP1203120A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/20—Starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2333/00—Polymers of unsaturated acids or derivatives thereof
    • B32B2333/04—Polymers of esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2451/00—Decorative or ornamental articles
    • 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
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • 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
    • 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
    • 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
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates

Definitions

  • the present invention relates to a composition which is particularly suitable for impregnating paper.
  • the present invention further relates to a method for producing such a composition, impregnated papers and their use.
  • Impregnated papers are used in many ways to design surfaces. In the furniture industry in particular, such papers are often used to refine surfaces, the papers being able to be single-colored or also being printed with certain decors, for example wood grain. Such papers offer the possibility of inexpensively optically less appealing substrates, such as chipboard, with a more appealing exterior.
  • impregnated papers are used, for example, to design surfaces in the furniture industry, so-called decorative papers, on the one hand they have to meet certain application requirements so that the appropriately coated substrates can be processed, and on the other hand the decorative papers themselves must be easy and inexpensive to manufacture.
  • the decorative papers must first meet certain mechanical requirements. This means that they have to be sufficiently waterproof, have a rigidity or flexibility suitable for processing and also have a suitable core strength.
  • Cleavage behavior means the tendency of the decorative paper to tear beyond the edge of the substrate. The splitting behavior is therefore a measure of how well the decorative paper can be processed.
  • processing steps such. B. sawing drilling milling and the like, the glued film must not fray. Rather, the soaked fiber should break off at the processing edge so that visually appealing results can be obtained.
  • the above-mentioned properties are very significantly influenced by the impregnation of the paper, that is to say the impregnating agent used.
  • the impregnating agent also has a decisive influence on the optical properties, that is to say in particular the depth of color and the level of lacquer of the decorative paper.
  • the compositions used for impregnating decorative papers are free of substances which are potentially harmful to health. It is particularly desirable here that the impregnating agents contain no formaldehyde.
  • compositions for impregnating decorative papers are known, for example, from WO 95/17551.
  • This application proposes aqueous impregnating agents which contain a crosslinkable polymer with a specific
  • this object is achieved by a composition
  • a composition comprising a binder, an aqueous polymer dispersion and glyoxal.
  • composition according to the invention is particularly advantageous since it enables the production of decorative papers with an excellent depth of color and a high level of lacquer.
  • decorative papers produced with the composition according to the invention are particularly stable against splitting without having to accept any loss in flexibility.
  • the compositions according to the present invention are also particularly advantageous in terms of processing technology, since they give very good results even with a low solids content and the paper to be impregnated can easily be impregnated with them. Further advantages and properties of the present invention will become apparent from the following description.
  • compositions according to the invention contain a binder.
  • Conventional binders can be used according to the invention, it being preferred if the binders are water-soluble.
  • water-soluble binders are polyvinyl alcohol, gelatin, cellulose derivatives such as carboxymethyl cellulose, alginates, starch and starch derivatives and mixtures thereof.
  • cellulose derivatives such as carboxymethyl cellulose, alginates, starch and starch derivatives and mixtures thereof.
  • Especially water-soluble starch derivatives and in particular dextrins are preferred. Dextrins have the particular advantage that they are readily water-soluble and do not require any additional measures, such as boiling.
  • compositions according to the invention further contain an aqueous polymer dispersion.
  • the polymer dispersions customary in paper impregnation can also be used here.
  • Dispersions which contain crosslinkable polymers, such as (meth) acrylate polymers and copolymers of (meth) acrylate monomers with suitable comonomers are advantageous.
  • the notation “(meth) acrylates” is intended to make it clear that both methacrylates and acrylates are suitable according to the invention.
  • suitable (meth) acrylate polymers are, for example, styrene (meth) acrylate copolymers, it being possible to use methyl, ethyl, propyl and butyl (meth) acrylates. All those monomers which carry reactive groups, such as amino, hydroxyl or carboxyl groups, which can react with glyoxal are particularly suitable.
  • aqueous polymer dispersion according to the invention can also contain other polymer components, such as polyester or polyurethane components. With these additional components, the properties of the impregnated paper can be adapted even better to the respective requirements.
  • Dispersions based on polyurethane can also be used advantageously for pre-impregnates, since they are characterized by very good smoothness.
  • composition according to the invention comprising a binder, an aqueous polymer dispersion and glyoxal, suitably has a viscosity of 10 to 15 seconds at 23 ° C. (measured with a Ford flow cup, 4 mm). This is generally achieved when the
  • the total solids content of the composition according to the invention is in the range from 15 to 45% by weight, preferably 20 to 40% by weight and particularly preferably 22 to 30% by weight.
  • the polymer component can make up 20 to 80% by weight, preferably 40 to 60% by weight and particularly preferably 50 to 60% by weight.
  • the amount of binder based on the dry mass of the composition according to the invention, can be 10 to 50% by weight, preferably 30 to 50% by weight and particularly preferably 35 to 40% by weight.
  • the proportion of the glyoxal in the dry matter of the composition according to the invention can be 2 to 20% by weight, preferably 7 to 15% by weight and very particularly preferably 9 to 12% by weight.
  • compositions according to the invention In addition to the aforementioned constituents of the compositions according to the invention, further constituents can be added, provided that these do not adversely affect the advantageous properties of the compositions according to the invention.
  • pigments or fillers can already be added to the compositions according to the invention.
  • composition according to the invention is suitably produced by first introducing the glyoxal with water. Then the binder is added and finally the polymer dispersion is incorporated.
  • This procedure is very advantageous because the technical glyoxal solutions usually used have a pH of about 2 to 3.5 and are therefore very acidic. If the glyoxal were to be mixed directly with the polymer dispersion, there would be a risk in the case of (meth) acrylate-containing dispersions that the polymer would flocculate and no homogeneous product would be obtained.
  • compositions according to the invention are also very advantageous from an application point of view.
  • the addition of the polymer dispersion as the last component makes it possible, by choosing a suitable polymer dispersion, to adapt the properties of the compositions on site to the individual requirements and in particular to the machines available in each case. At the same time, this procedure significantly improves storage stability.
  • Another advantage that is significant in practice, particularly when using starch and starch derivatives as binders, is that the composition containing glyoxal, water and the respective binder is essentially not subject to fungal attack.
  • compositions according to the invention are particularly suitable for impregnating paper and here in particular for impregnating decorative papers.
  • the papers which can be used are not particularly limited, but papers with an ash content of less than 18% by weight are particularly preferred. It is known that papers with a low ash content are particularly resistant to splitting. Accordingly, papers with an ash content of less than 15% by weight and in particular less than 12% by weight are particularly preferred.
  • the weight per unit area of the papers to be impregnated is not particularly limited; papers with a weight per unit area of 45 to 70 g / m 2 are suitable in any case.
  • the paper can be impregnated with the composition according to the invention by customary methods.
  • the per The amount of paper to be applied per square meter depends on whether post-impregnation or pre-impregnation is carried out.
  • the compositions according to the invention are equally suitable for both procedures.
  • the proportion of impregnation is usually 20 to 24% by weight for pre-impregnates and 25 to 35% by weight for post-impregnates, based on the dry weight of the impregnating agent. According to the invention, this proportion can be significantly reduced. For example, good results with 18% by weight for post-embossing were achieved.
  • the composition according to the invention thus also enables the production of resource-saving and less expensive decorative papers without having to compromise on quality.
  • the paper impregnated in this way can be laminated onto various substrates, such as chipboard, fiberboard and the like, using customary methods. It was found that the papers according to the invention can be glued particularly well, for example using urea glue. This property is of great importance in practice, since good and fast gluing enables high production speeds.
  • Licopol is an aqueous dextrin solution with 50% dry matter available from Südstark GmbH, Schrobenhausen.
  • Acronal S 305 D is an n-butyl acrylate-styrene copolymer available from BASF AG, Ludwigshafen (solids content 50% by weight).
  • the glyoxal used was a 40% by weight aqueous solution.
  • a decorative paper available from Munksjö, Italy, with the number 101465 and a basis weight of 45 g / m 2 at 13% ash content and a porosity of 24 s, measured according to the Gurley method, was impregnated.
  • the impregnation was carried out by soaking the paper in the impregnation solution, wiping off excess impregnation solution and drying at 150 ° C.
  • the impregnating agent content in the impregnated paper was 25 ⁇ 2% by weight and was therefore in the borderline range of pre- and post-impregnates. During the impregnation, it was observed how well the impregnating solution was absorbed by the paper. The results are shown in Table 2.
  • the papers impregnated in this way were then coated with an acid-curable aminoplast lacquer (corresponding to type 9944.61, available from Plantag Chemie, Detmold). Then the papers were dried at 160 ° C. The surface was then examined and the gloss was examined using an Ericsson glossmeter at an angle of 60 ° C. Farther the flexibility of the impregnated and varnished papers by folding was examined. If the paper broke when folded, it was classified as fragile.
  • an acid-curable aminoplast lacquer corresponding to type 9944.61, available from Plantag Chemie, Detmold
  • the splitting strength of the papers was also examined.
  • a sample was adhered to a particle board by means of an aminoplast adhesive, part of the paper protruding beyond the edge of the particle board by at least 20 mm in the cross grain direction.
  • the adhesive temperature was 145 ° C. and the pressure was applied at 10 N / cm for 15 s.
  • the protruding part of the paper was cut at 2 cm intervals, so that 2 x 2 cm protrusions were formed. These supernatants were then quickly pulled towards the edge of the particle board at an angle of 45 °.
  • composition 2 as a standard
  • formulation 4 according to the invention shows unexpectedly good overall properties which cannot be obtained if only two components or only one of the components according to the invention are used. Particularly noteworthy is the high splitting resistance, the good surface gloss and the good flexibility of the papers impregnated according to the invention.

Landscapes

  • Paper (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

L'invention concerne une composition destinée notamment à imprégner du papier et contenant un liant, une dispersion polymère aqueuse et du glyoxal. L'invention concerne également un procédé de production d'une telle composition et un produit intermédiaire qui peut être utilisé de façon avantageuse dans ce procédé et qui contient du glyoxal, de l'eau et un liant. Les compositions selon l'invention sont particulièrement adaptées notamment à l'imprégnation du papier et peuvent donc être utilisées dans la production de papier décoratif aux propriétés améliorées.
EP00936879A 1999-06-11 2000-06-13 Composition d'impregnation de papier, son procede de production, papier impregne et lamine comprenant ce papier impregne Withdrawn EP1203120A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926722 1999-06-11
DE19926722 1999-06-11
PCT/EP2000/005431 WO2001011139A1 (fr) 1999-06-11 2000-06-13 Composition d'impregnation de papier, son procede de production, papier impregne et lamine comprenant ce papier impregne

Publications (1)

Publication Number Publication Date
EP1203120A1 true EP1203120A1 (fr) 2002-05-08

Family

ID=7910961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00936879A Withdrawn EP1203120A1 (fr) 1999-06-11 2000-06-13 Composition d'impregnation de papier, son procede de production, papier impregne et lamine comprenant ce papier impregne

Country Status (5)

Country Link
US (1) US20020124774A1 (fr)
EP (1) EP1203120A1 (fr)
BR (1) BR0011744A (fr)
CA (1) CA2377080A1 (fr)
WO (1) WO2001011139A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100342080C (zh) * 2001-03-30 2007-10-10 克劳诺斯潘技术有限公司 用于制造镶板的纸张及其相应的制造方法
US20050019569A1 (en) * 2003-07-25 2005-01-27 Weyerhaeuser Company Glyoxal crosslinked cellulosic fibers having improved brightness and color
DE102007030102B4 (de) 2007-06-28 2019-10-31 Schoeller Technocell Gmbh & Co. Kg Vorimprägnat
CA2709822C (fr) 2007-12-17 2014-10-07 Technocell Dekor Gmbh & Co. Kg Produit d'impregnation pour papier decoratif compressible, imprimable par le procede a jet d'encre
RU2422574C1 (ru) † 2007-12-21 2011-06-27 Техноцелль Декор Гмбх Унд Ко. Кг Бумага-основа для изготовления материалов для формирования декоративного покрытия
EP2262949B1 (fr) * 2008-04-03 2012-06-20 Basf Se Formulations de revêtement ou de liaison de papier et procédés de fabrication et d'utilisation de celles-ci
US8613834B2 (en) * 2008-04-03 2013-12-24 Basf Se Paper coating or binding formulations and methods of making and using same
ES2530953T3 (es) * 2010-03-23 2015-03-09 Aica Kogyo Co Ltd Tablero de melamina decorativo
DE102011105676B4 (de) 2011-06-22 2018-05-09 Schoeller Technocell Gmbh & Co. Kg Vorimprägnat und Dekorpapier oder dekorativer Beschichtungswerkstoff daraus
PL3754109T3 (pl) 2019-06-18 2022-12-27 Schoeller Technocell Gmbh & Co. Kg Preimpregnat o ulepszonej płaskości

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FR1409758A (fr) * 1964-05-13 1965-09-03 Nobel Bozel Compositions améliorant la résistance à la friction humide des papiers couchés et papiers obtenus
DE2034525A1 (de) * 1970-07-11 1972-01-27 Pelikan Werke Wagner Guenther Verbessertes Farbreaktionspapier
US5032683A (en) * 1989-06-26 1991-07-16 Sequa Chemicals, Inc. Glyoxal modified aqueous starch dispersion and method
DE4227184C2 (de) * 1992-08-17 1997-09-25 Dresden Papier Ag Imprägniermittel zur Herstellung von Papieren mit hohem Durchdringungswiderstand gegen Fette, Öle und wässrige Medien und Verfahren zu seiner Herstellung
PL173782B1 (pl) * 1993-12-21 1998-04-30 Arjo Wiggins Sa Arkusz dekoracyjny papierowy oraz płyta dekoracyjna wielowarstwowa zawierająca ten arkusz
FR2744141B1 (fr) * 1996-01-30 1998-03-20 Atochem Elf Sa Procede pour le traitement oleophobe et hydrophobe du papier ou du carton
FR2744465B1 (fr) * 1996-02-05 1998-07-10 Arjo Wiggins Sa Substrat fibreux oleophobe et hydrophobe et son procede de fabrication
DE19758479C2 (de) * 1997-07-02 2002-07-11 Koehler Decor Gmbh & Co Kg Imprägnierflotte

Non-Patent Citations (1)

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Title
See references of WO0111139A1 *

Also Published As

Publication number Publication date
CA2377080A1 (fr) 2001-02-15
WO2001011139A1 (fr) 2001-02-15
US20020124774A1 (en) 2002-09-12
BR0011744A (pt) 2002-11-26

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