SK285185B6 - Method for producing laminate coatings - Google Patents

Method for producing laminate coatings Download PDF

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Publication number
SK285185B6
SK285185B6 SK1401-2000A SK14012000A SK285185B6 SK 285185 B6 SK285185 B6 SK 285185B6 SK 14012000 A SK14012000 A SK 14012000A SK 285185 B6 SK285185 B6 SK 285185B6
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Slovakia
Prior art keywords
decorative paper
alumina
impregnated
corundum
drying
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SK1401-2000A
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Slovak (sk)
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SK14012000A3 (en
Inventor
Dieter D�HRING
Anton Ott
Original Assignee
Kronospan Technical Company Ltd.
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Application filed by Kronospan Technical Company Ltd. filed Critical Kronospan Technical Company Ltd.
Publication of SK14012000A3 publication Critical patent/SK14012000A3/en
Publication of SK285185B6 publication Critical patent/SK285185B6/en

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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
    • 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
    • D21H27/28—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 treated to obtain specific resistance properties, e.g. against wear or weather
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • B44C5/0476—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper with abrasion resistant properties

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)
  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

According to the method for producing laminate coatings, in particular, for floor plates, said floor plates comprise a decorative paper that is impregnated with an amino resin and comprise an abrasionproof covering layer which is arranged thereon and which is provided with particle-shaped, fine aluminium oxide (corundum), the particle-shaped aluminium oxide is spread onto the wet impregnated decorative paper before drying the same. The decorative paper treated in such a manner is then pre-dried or eventually pre-condensed. After drying, a covering layer comprised of fibrous material containing melamine resin is applied to the pre-treated decorative paper and finally, the entire assembly is completely dried.

Description

Oblasť technikyTechnical field

Vynález sa týka spôsobu výroby laminátových povlakov, ktoré sú vhodné a sú určené najmä na podlahové dosky, ktoré obsahujú dekoratívny papier impregnovaný aminoživicou a na ňom umiestnenú oteruvzdomú kryciu vrstvu s jemnozmným oxidom hlinitým (korundom).The invention relates to a process for the production of laminate coatings which are particularly suitable for floorboards, which comprise a decorative resin impregnated paper and an abrasion-resistant abrasion-resistant alumina (corundum) coating placed thereon.

Doterajší stav technikyBACKGROUND OF THE INVENTION

Je známe (DE 195 08 797 Cl) vyrábať oteruvzdomé laminátové povlaky na podlahové dosky tak, že na pohľadovú plochu, dekoratívneho papiera, po jeho napustení živicou a vysušení až na zostatkovú vlhkosť, sa nanáša v takom množstve viskózna zmes z melamínovej živice, celulózových vlákien, korundu, aditív a vody, obsahujúca oteruvzdomé minerálne zložky vo forme jemných častíc, že povlak má po dosiahnutí konečnej vlhkosti hrúbku 20 až 60 pm, hneď potom sa takto povlieknutý dekoratívny hárok v aspoň jednom ďalšom pracovnom kroku vysuší na konečnú vlhkosť.It is known (DE 195 08 797 C1) to produce abrasion-resistant laminate coatings for floorboards such that a viscous mixture of melamine resin, cellulose fibers is applied in such an amount to the visible surface, decorative paper, after impregnation with resin and drying to residual moisture. , corundum, additives and water containing fine particulate abrasion-resistant mineral constituents such that the coating has a thickness of 20 to 60 µm after reaching the final moisture, immediately afterwards the coated decorative sheet is dried to the final moisture in at least one further working step.

Pri tomto známom spôsobe sa na papier, napustený melamínovou živicou a vysušený, nanáša viskózna zmes, ktorá obsahuje jemnozmný oxid hlinitý, prípadne korund, určujúci oteruvzdomosť hotového výrobku. Častice jemnozmného korundu sú v krycej vrstve vytvorené z viskóznej zmesi viac menej rovnomerne rozdelené a nachádzajú sa teda aj na povrchu krycej vrstvy.In this known process, a viscous mixture containing a fine-grained alumina or corundum determining the abrasion resistance of the finished product is applied to the paper impregnated with melamine resin and dried. The fine-grained corundum particles are more or less evenly distributed in the topcoat formed from the viscous mixture and are therefore also present on the surface of the topcoat.

Ďalej je známe vyrábať laminátové povlaky na podlahové dosky tak, že sa na hornú stranu alebo pohľadovú stranu dekoratívneho papiera impregnovaného aminoživicou, prípadne melamínovou živicou ukladá vrchná vrstva, ktorá má na hornej strane z papiera pozostávajúceho substrátu jemnozmné častice z oxidu hlinitého, prípadne korundu.Furthermore, it is known to produce laminate coatings for floorboards by depositing an upper layer having fine grain alumina or corundum particles on the upper side of the paper-containing substrate on top or face side of the decorative paper impregnated with an amino resin or melamine resin.

Tieto obidva známe spôsoby vyžadujú dva zvláštne kroky, totiž na jednej strane výrobu separátnej zmesi obsahujúcej častice korundu a jej nanášanie, na druhej strane výrobu vrchnej vrstvy, ktorá sa potom musí separátne ukladať. Preto sú tieto známe spôsoby pomerne nákladné a teda menej hospodárne.These two known methods require two separate steps, namely, on the one hand, the production of a separate mixture containing the corundum particles and its application, on the other hand, the production of the top layer, which must then be separately deposited. Therefore, these known methods are relatively expensive and thus less economical.

Ďalšia v podstate významnejšia nevýhoda spočíva v tom, že lisové prítlačné plechy, prípadne lisovacie pásy, používané na strojové zhotovenie laminátových povlakov, sú poškodzované oterom od korundových častíc nachádzajúcich sa na povrchu laminátu, čo vedie na pomerne rýchle zošedivenie povrchov hotových laminátových povlakov. Preto sa musia pri použití známych výrobných technológií používané lisové prítlačné plechy prípadne lisovacie pásy pozostávajúce z plechu pomerne často na povrchu opravovať, prípadne prebrusovať, aby sa vyrovnalo otupenie ich povrchu. Životnosť lisových prítlačných plechov, prípadne lisovacích pásov je v súlade s tým pomerne krátka.A further significant disadvantage is that the press plates or press strips used to machine laminate coatings are damaged by abrasion from the corundum particles present on the surface of the laminate, resulting in relatively fast graying of the surfaces of the finished laminate coatings. For this reason, using the known production technologies, the press plates used or the press strips consisting of the sheet must be repaired or reground quite often, in order to compensate for the dulling of their surface. Accordingly, the service life of the press thrust plates or the press strips is relatively short.

Opravovanie povrchov lisových prítlačných plechov, prípadne lisovacích pásov vyvoláva nielen vysoké spracovacie náklady, ale tiež prestoje nimi vybavených lisov, čo negatívne ovplyvňuje hospodárnosť pri oteruvzdomej výrobe laminátových povlakov.Repairing the surfaces of the press plates or the press strips not only results in high processing costs, but also the downtimes of the presses equipped therewith, which negatively affects the economy in abrasion-resistant production of laminate coatings.

Podstata vynálezuSUMMARY OF THE INVENTION

Vynález je založený na úlohe, urobiť výrobu oteruvzdomých laminátových povlakov hospodárnejšiu ako doteraz.The present invention is based on the task of making abrasion resistant laminate coatings more economical than hitherto.

Táto úloha sa podľa vynálezu rieši spôsobom, ktorý má znaky nároku 1.This object is achieved according to the invention in a manner having the features of claim 1.

Výhodné uskutočnenia vynálezu sú predmetom ďalších patentových nárokov.Advantageous embodiments of the invention are the subject of further claims.

Podľa predloženého vynálezu je možné v jedinom procese vyrobiť laminátový povlak na podlahové dosky alebo podobné použitie, pričom častice z jemného oxidu hlinitého alebo korundu, prepožičiavajúce laminátovému povlaku odolnosť proti oteru, sú na povrchu povlaku zapuzdrené tak, že nemôžu poškodiť lisové prítlačné plechy, prípadne lisovacie pásy strojov, prípadne lisov použitých na výrobu laminátových povlakov.According to the present invention, it is possible in a single process to produce a laminate coating for floorboards or the like, wherein the fine alumina or corundum particles imparting a wear-resistant laminate coating are encapsulated on the surface of the coating so that they cannot damage the press plates or bands of machines or presses used for production of laminate coatings.

Krycia vrstva z melamínovej živice obsahujúca vláknitý materiál, nanesená na impregnovaný dekoratívny papier po rozprestrení časticového oxidu hlinitého, je priesvitná, takže dekor dekoratívneho papiera je dobre viditeľný. Vzhľadom na zakrytie častíc, prepožičiavajúcich konečnému výrobku odolnosť proti oteru, počas výroby laminátového povlaku, nie je ani po dlhšom používaní lisových prítlačných plechov alebo lisovacích pásov nutné očakávať zošedivenie a tým aj zhoršenie povrchu vyrobeného laminátového povlaku.The melamine resin cover layer containing the fibrous material applied to the impregnated decorative paper after spreading the particulate alumina is translucent, so that the decoration of the decorative paper is clearly visible. Due to the covering of the particles imparting abrasion resistance to the finished product during the production of the laminate coating, it is not necessary to expect graying and thus a deterioration of the surface of the laminate produced even after prolonged use of the press plates or press strips.

Inými slovami, povrch laminátového povlaku vyrobeného podľa vynálezu zostáva jasný, pretože vlákna alebo tiež rúno nanášané ako zapuzdrenie korundových častíc nemenia prípadne neovplyvňujú viditeľnosť dekoru dekoratívneho papiera, na druhej strane ale chránia proti predčasnému opotrebovaniu lisové prítlačné plechy, prípadne lisovacie pásy lisov alebo iných strojov používaných na výrobu laminátových povlakov.In other words, the surface of the laminate coating produced according to the invention remains clear, since the fibers or also the nonwoven applied as a corundum particle encapsulation do not alter or affect the visibility of the decorative paper decor, on the other hand protects the press plates or the press belts for the production of laminate coatings.

Laminátové povlaky podľa vynálezu sa môžu nanášať napríklad na trieskové alebo vláknité dosky, ktoré sú predtým na hornej strane a/alebo spodnej strane vybavené podložnou vrstvou určenou proti deformácii.The laminate coatings according to the invention can be applied, for example, to chipboard or fiber boards which have previously been provided with an anti-deformation underlay on the upper side and / or the lower side.

Príklady uskutočnenia vynálezuDETAILED DESCRIPTION OF THE INVENTION

Vynález je ďalej objasnený pomocou dvoch príkladov uskutočnenia.The invention is further illustrated by two exemplary embodiments.

Príklad 1Example 1

Dekoratívny papier s plošnou hmotnosťou 70 g/m2 sa najprv napustí v kúpeli melamínovou živicou, pričom hmotnosť po sušení je 140 g/m2. Na ešte vlhký papierový pás sa rozprestrie korund v množstve 20 g/m2.The decorative paper with a basis weight of 70 g / m 2 is first impregnated in the bath with melamine resin, the weight after drying being 140 g / m 2 . 20 g / m 2 of corundum is spread on the still wet paper strip.

Nasledovne sa papier predsuší pri teplote 180 °C na obsah vlhkosti 15 %.Subsequently, the paper is pre-dried at 180 ° C to a moisture content of 15%.

Na tento papierový pás sa potom nanáša vláknové rúno s plošnou hmotnosťou 80 g/m2, ktoré sa skladá z 80 % melamínovej živice a 20 % celulózových vlákien s dĺžkou 60 pm Nasleduje konečné vysušenie pri 180 °C až na vlhkosť 6,0 až 6,5 %.The paper web is then coated with a web of 80 g / m @ 2 , consisting of 80% melamine resin and 20% cellulose fibers with a length of 60 pm. , 5%.

Takto vyrobený impregnovaný polotovar sa v lise s krátkym cyklom pri teplote 205 °C, pomernom tlakuThe impregnated semi-finished product thus prepared is placed in a short-cycle press at 205 ° C, relative pressure

2,5 MPa a lisovacom čase 20 s nalisuje na podkladovú HDF-dosku.2.5 MPa and a pressing time of 20 s is pressed onto the underlying HDF board.

Takto získaná laminátová podlahová krytina spĺňa normu EN 438 a hodnotu abrázie IP 10 000.The laminate flooring thus obtained complies with EN 438 and an abrasion value of IP 10 000.

Príklad 2Example 2

Dekoratívny papier s plošnou hmotnosťou 80 g/m2 sa napustí melamínovou živicou, pričom plošná hmotnosť po nadväzujúcom sušení je 150 g/m2. Na ešte vlhký papierový pás sa rozprestrie jemnozmný oxid hlinitý v množstve 8 g/m2. Papierový pás sa potom vysuší pri teplote 210 °C na obsah vlhkosti 12 %. Nasledovne sa nanáša rúno 40 g/m2, ktoré sa skladá z 85 % melaminovej živice a 15 % sklených vlákien s dĺžkou 3 mm a priemerom 10 pm. Ďalší postup zodpovedá príkladu 1.The decorative paper having a basis weight of 80 g / m 2 is impregnated with a melamine resin, the basis weight after subsequent drying being 150 g / m 2 . A fine-grained alumina in an amount of 8 g / m 2 is spread over the still wet paper web. The paper web is then dried at 210 ° C to a moisture content of 12%. Subsequently, a 40 g / m 2 fleece consisting of 85% melamine resin and 15% glass fibers with a length of 3 mm and a diameter of 10 µm is applied. The procedure follows Example 1.

Claims (6)

PATENTOVÉ NÁROKYPATENT CLAIMS 1. Spôsob výroby laminátových povlakov, najmä na podlahové dosky, ktoré obsahujú dekoratívny papier impregnovaný aminoživicou a na ňom umiestnenú oteruvzdomú kryciu vrstvu s jemnozmným oxidom hlinitým (korundom), vyznačujúci sa tým, že oxid hlinitý vo forme častíc sa rozprestrie pred sušením na ešte vlhký impregnovaný dekoratívny papier, takto upravený dekoratívny papier sa potom predsuší, prípadne predkondenzuje, po predsušení sa na predupravený dekoratívny papier nanesie krycia vrstva z vláknitého materiálu obsahujúceho melaminovú živicu, a tento celok sa finálne usuší.Process for the production of laminate coatings, in particular for floorboards, which comprise a decorative paper impregnated with an amino resin and on it an abrasion-resistant coating with fine alumina (corundum) placed thereon, characterized in that the particulate alumina is spread before drying the impregnated decorative paper, the treated decorative paper is then pre-dried or precondensed, after pre-drying, the pre-treated decorative paper is covered with a fiber layer containing melamine resin, and the whole is finally dried. 2. Spôsob podľa nároku 1,vyznačujúci sa t ý m , že ako krycia vrstva sa na dekoratívny papier uloží vláknité rúno obsahujúce melaminovú živicu.Method according to claim 1, characterized in that a fibrous web containing a melamine resin is deposited on the decorative paper on the decorative paper. 3. Spôsob podľa nároku 1 alebo 2, vyznačujúci sa t ý m , že sa na dekoratívny papier rozprestrie oxid hlinitý, prípadne korund s veľkosťou častíc 125 pm.Method according to claim 1 or 2, characterized in that alumina or corundum with a particle size of 125 µm is spread on the decorative paper. 4. Spôsob podľa niektorého z nárokov 1 až 3, v y značujúci sa tým, že plošná hmotnosť povlieknutého dekoratívneho papiera po sušení je 140 až 150 g/m2.Method according to any one of claims 1 to 3, characterized in that the basis weight of the coated decorative paper after drying is 140 to 150 g / m 2 . 5. Spôsob podľa niektorého z nárokov 1 až 4, v y značujúci sa tým, že oxid hlinitý sa rozprestrie v množstve 20 g/m2.Method according to one of Claims 1 to 4, characterized in that the alumina is spread in an amount of 20 g / m 2 . 6. Spôsob podľa niektorého z nárokov 1 až 4, v y značujúci sa tým, že oxid hlinitý sa rozprestrie v množstve 8 g/m2.Method according to any one of claims 1 to 4, characterized in that the alumina is spread in an amount of 8 g / m 2 .
SK1401-2000A 1999-01-26 1999-01-26 Method for producing laminate coatings SK285185B6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1999/000606 WO2000044576A1 (en) 1999-01-26 1999-01-26 Method for producing laminate coatings, and laminate coating

Publications (2)

Publication Number Publication Date
SK14012000A3 SK14012000A3 (en) 2001-06-11
SK285185B6 true SK285185B6 (en) 2006-08-03

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EP (1) EP1068083B1 (en)
CN (1) CN1094840C (en)
AT (1) ATE251551T1 (en)
AU (1) AU2830799A (en)
CZ (1) CZ300493B6 (en)
DE (1) DE59907294D1 (en)
DK (1) DK1068083T3 (en)
ES (1) ES2205781T3 (en)
HK (1) HK1035168A1 (en)
PL (1) PL188357B1 (en)
RU (1) RU2213668C2 (en)
SI (1) SI1068083T1 (en)
SK (1) SK285185B6 (en)
WO (1) WO2000044576A1 (en)

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