EP1595718B1 - Méthode pour produire un stratifié - Google Patents

Méthode pour produire un stratifié Download PDF

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Publication number
EP1595718B1
EP1595718B1 EP04013999A EP04013999A EP1595718B1 EP 1595718 B1 EP1595718 B1 EP 1595718B1 EP 04013999 A EP04013999 A EP 04013999A EP 04013999 A EP04013999 A EP 04013999A EP 1595718 B1 EP1595718 B1 EP 1595718B1
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EP
European Patent Office
Prior art keywords
polymer
manufacturing
laminate according
decorative laminate
paper
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EP04013999A
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German (de)
English (en)
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EP1595718A1 (fr
Inventor
David Elwyn Price
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Depco TRH Pty Ltd
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Depco TRH Pty Ltd
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Priority to PL04013999T priority Critical patent/PL1595718T3/pl
Priority to EP04013999A priority patent/EP1595718B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • 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

Definitions

  • the invention relates to a method for manufacturing a decorative laminate, as well as decorative laminate products manufactured by the method according to the invention.
  • substrates for example particle-board or fibreboard, are laminated with one or more resin impregnated overlaying papers on one or both sides, in which these paper materials serve as a carrier for the pre-polymer a-stage resin starting material, pigments and print or any subset of those.
  • These carrier materials also impart an internal stability to the final cured resin through their fibrous structure.
  • LPM low pressure melamine
  • DPL direct pressure melamine
  • TPM thermo-fused melamine
  • HPL high pressure laminates
  • several resin impregnated kraft papers are assembled to form the substrate or core material and a resin impregnated décor paper are placed above the kraft papers.
  • a resin impregnated clear overlay sheet is placed above the décor paper to provide wear protection of the print.
  • the decorative paper is not impregnated and the clear overlay provides sufficient resin and the high pressure press sufficient pressure to form the uniformly impregnated HPL, this process being known as dry pressing.
  • Hard particles such as fused alumina may be included in or on the clear overlay paper.
  • CPL continuous pressure laminate
  • the impregnated decorative paper and impregnated kraft paper or papers and optionally an impregnated clear overlay paper are fed from rolls into a double band hot press.
  • the pressure and heating bonds the impregnated papers into a continuous laminate.
  • the impregnated papers can be applied directly and simultaneously onto a wood based panel substrate within the continuous press.
  • WO-A-00/43132 discloses a method for manufacturing a decorative laminate according to the preamble of claim 1.
  • the laminate for example, as an imitation of a genuine wood flooring, looks as realistic as possible.
  • a wooden substrate which usually consists of composite board or chipboard of various types, is covered with a layered sequence of resin-impregnated materials, each material layer serving a specific purpose.
  • a lowermost impregnated paper layer in the laminate layer structure provides the means to carry the pigments and decorative prints in the laminate. This carrying layer is usually referred to as the decor sheet.
  • Some manufacturers also include an impregnated clear overlay paper layer to protect the decoration of the printed paper layer.
  • This overlay paper can include hard particles in and or on the overlay paper to enhance the abrasion resistance of the laminate surface.
  • an impregnated backer paper is applied to the non-decorative side of the laminate.
  • the material layers arranged one above the other are usually impregnated with a liquid thermosetting resin and after impregnation the layers undergo treatment to dry and partially cure the thermosetting resin before their use in the laminate manufacture process.
  • the partially cured stage of the resin is usually referred to as the b-stage. After impregnation the materials are laid onto the substrate and are bonded to the substrate in a hot press where the partially cured resin cures from its b-stage to its final state, called the c-stage.
  • the resin is partially cured after impregnation of a fibrous material and then fully cured in the hot press.
  • Final curing of the resin is conducted in a hot press as selected by the manufacturer in both methods where the impregnated papers or non-woven materials are bonded to the substrate surface.
  • the dried and partially cured resin enters the manufacturing process absorbed into and coated onto the carrier papers.
  • LPM low pressure melamine
  • DPL direct pressure laminate
  • TPM thermo fused melamine
  • the carrier paper is impregnated with melamine formaldehyde resin usually containing about 48% water, at a viscosity of approximately 30cps., and temperature of approximately 25C.
  • the core of the carrier paper is impregnated with urea formaldehyde resin usually containing about 48% water, partially dried and then coated on both sides with a water based melamine formaldehyde resin before further drying and curing to the desired properties and thereafter known as a b-stage laminate.
  • High pressure laminates (HPL) and continuous laminates (CPL) are usually a combination of kraft papers impregnated with phenol formaldehyde resin and a decorative paper impregnated with melamine formaldehyde resin.
  • Clear overlay papers are usually only impregnated with melamine formaldehyde resin.
  • These resins usually contain additives that impart particular properties, such as wetting agents, release agents, plasticisers and catalysts. They can also be pigmented.
  • Laminates are also provided with a surface structure. These laminates do not only exhibit the decoration but also the surface structure of a genuine wood floor or other natural material surface. For these high quality laminates it is particularly important that the embossing, which is incorporated into the surface of the laminate, agrees structurally and topologically with the decor located thereunder. Especially in the case of high-contrast decors, it is important that the mutual alignment of the embossing and the decor layer agree precisely as otherwise the visual impression of a genuine natural product is impaired.
  • the embossing is provided on the surface by use of a suitably embossed negative image on a press plate or continuous press belt.
  • Another disadvantage inherent to the method of manufacturing laminates according to the prior art is the re-introduction of water to the paper carrier as a component of the impregnating resin.
  • an aqueous pulp mass of approximately 98% water is delivered to the wire section at the front of the paper machine, also called the wet end. It is then pressed and dried with considerable expenditure of energy.
  • the dry paper thus obtained is then remoistened by placing the paper in an aqueous resin bath.
  • the paper which has initially contracted in the drying process of the paper manufacture, now has the opportunity to re-expand by swelling whilst absorbing humidity.
  • the object of the invention is thus to provide a method for manufacturing laminates in which the usage of carrier materials can be minimised and in which a sufficient build-up of resin layer thickness can be achieved.
  • a polymer layer is applied to the substrate to be laminated, wherein the polymer is cured in more than one process step and wherein the polymer is applied to the substrate without using a carrier material.
  • an overlaying paper or non-woven material is incorporated into or onto the surface of the polymer so that the fibres of the fibrous material impart additional stabilisation to the polymer through their fibre network structure.
  • additional process steps can be conducted, for instance to print a decoration directly onto the partially cured polymer surface.
  • the employed polymer is finally cured after the fibrous material has been incorporated into the surface of the partially cured polymer layer. In the final curing step the polymer layer forms an inner bond with the fibres of the overlaying paper or non-woven material.
  • an overlaying paper or non-woven material may be applied to the polymer surface and the polymer subsequently partially and or fully cured.
  • an overlaying paper or non-woven material with a fibrous structure is used to stabilise the surface of and is applied to a polymer which is not completely set or cured and wherein the residual moisture content of the partially cured polymer is so low that it is impossible for the fibrous material or any carrier material for a decorative print to distort by absorbing humidity. Since swelling of carrier material is avoided, the tendency of a carrier material to expand is circumvented. Also, as a result of the initial partial curing further shrinking during the final curing of the resin is minimized. As a result, any decorative imprints applied directly to the partially cured polymer, or to an overlay paper or other carrier material remain undistorted. Undistorted in the context of the present document means that any distortion is negligibly small with respect to visual inspection by the human eye.
  • Another advantage obtained from the method according to the invention is the possibility to dispense with recurrent moistening and subsequent drying of carrier materials that are printed with a décor design designated for registered embossing. Therefore the method can be implemented using less energy than methods in the prior art. As a result, cost savings are obtained.
  • a further advantage of the method according to the invention is a possible dispensing of water as solvent or at least a serious reduction of the water content in the starting material before the application of the fibrous material, resulting in less heating and curing energy needed for the process.
  • water as a solvent material is absent or reduced in the partially cured polymer
  • fibrous material layers introduced into the polymer surface can still by wetted and impregnated by using pressure and heat. By applying heat and pressure air is completely removed from the pores of the overlay paper and as a result an increased deep gloss and clarity of the surface of the laminate is achieved.
  • Still a further advantage of the method according to the invention is the ability to make one or several individual decorative laminates without the need for a carrier material, which in the case of developing a new print or new colour, substantially reduces the cost of the development process. This is furthermore particularly advantageous when in the future only one or several sheets are required and the availability of such small quantities of a unicolour or printed paper in one or several widths is prohibitively expensive or otherwise just not available from the paper producer.
  • the build-up of layer thickness is advantageously facilitated by the method according to the invention without the need to use papers as a carrier material.
  • Another advantage of the method according to the invention is that there is no need for any carrier paper as a support for a fluid starting material for polymerisation. As a result less material is required to produce laminates than in the previously known methods and further results from this are cost savings.
  • urea or other amino derivatives or a combination of these can be used to substitute part or all of the triazine compound claimed in the disclosed patents WO 01/44333 and EP 0514792 .
  • the liquid pre-polymer (a-stage) resin no longer needs be absorbed into or onto the paper or non-woven materials as a carrier but as a result of the possible higher viscosities, the polymer can be applied to one or both sides of the substrate in a layer thickness sufficient for laminate manufacture.
  • the viscous polymer employed wets the substrate surface and is partially cured in a first process step. If the polymer starting material contains residual water it is evaporated as the polymer progresses to b-stage, whereafter the fibrous material layer, like an overlaying paper or a non-woven material, is introduced to the laminate manufacturing process. Following the initial partial curing, the laminate can take up a décor sheet, and if necessary a protective overlay paper, before being placed in a hot press and put under pressure. According to the invention an additional layer or layers of resin may be applied above the printed design to enhance protection of the print. An additional resin layer placed above the printed design may include additives that provide specific properties, as an example, particles of fused alumina to improve abrasion resistance.
  • the partial curing has the result that the unsupported or uncarried polymer resin no longer flows off the substrate in the final curing process and even supports the absorbed fibrous material layer, preventing its expansion under heat, pressure and residual moisture.
  • the polymer resin forms a layer on the substrate. This layer is sufficiently viscous and stable to prevent it from flowing off the substrate. Still, an overlaying paper or any other non-woven or fibrous material layer placed thereon can be impregnated with the partially cured polymer by embedding it in the surface of the partially cured polymer resin layer.
  • an unprinted and clear overlaying paper or non-woven material is pre-coated and or impregnated with a synthetic resin, preferably with a melamine rich synthetic resin, most preferably a synthetic melamine based thermosetting resin.
  • Impregnated overlaying papers known as prepregs are easy to handle and adhere very well to the surface of the partially cured polymer on the substrate.
  • the overlaying papers or non-woven materials can be produced in a parallel process step or can be obtained from third sources.
  • the overlaying paper or non-woven material is preferably coated or impregnated with a melamine layer by vapour phase deposition in order to provide a melamine rich surface, especially advantageous if the overlaying paper or non-woven material with the melamine rich surface will be situated at the outermost position of the laminate.
  • the melamine layer will also stabilize the overlaying paper or non-woven prior to printing. It is a well known fact that melamine powder will sublime under appropriate conditions.
  • EP1325968 is introduced as reference and is valid as part of the disclosure in this document.
  • a print can be applied directly onto the partially cured polymer surface, just before adding an overlay paper or a prepreg.
  • the b-stage resin By printing onto the partially cured polymer, the b-stage resin, it is possible to dispense with using any carrier material as support for the decorative print. This leads to cost savings as a result of the lower material consumption.
  • pre-treat the surface of the partially cured polymer It can be advantageous to pre-treat the surface of the partially cured polymer. Possible treatments among others are electric charging or coating with a very thin layer of an ionic material. Also a printing primer can be deposited on the partially cured polymer surface. For this purpose, the layer to be printed on is advantageously pre-treated to enhance printability. If the polymer surface is pre-treated by electrically charging the surface in any of the ways mentioned above, the electric surface charges attract counter-charged printing colours, such as dyes, pigments or toners. The attraction of the printing colour to the pre-treated surface prevents bleeding of the printing colour resulting in a more stable and more precise printing.
  • printing colours such as dyes, pigments or toners.
  • a decorative print is advantageously applied to the overlaying paper or non-woven material in a parallel process step. It is possible to use an overlaying material which is colourless and transparent or which is coloured with pigments or dyes. By using the method according to the invention it is thus possible to apply a decorative print to a light weight overlaying material instead of to a heavier and more absorbent decor sheet.
  • the viscous polymer resin layer can serve as a support for dissolved dyes and/or dispersed pigments for covering the substrate surface.
  • the overlaying material has to serve two different purposes, firstly to strengthen the surface structure of the cured resin through its fibre structure and secondly to serve as a support for a décor print.
  • the clear overlaying paper is printed with a mirror-inverted image wherein this case the overlaying material is placed on the surface of the polymer resin so that the imprint points downwards onto the polymer layer.
  • the print can be applied in the usual manner to the clear overlaying paper and the print protected by a further appropriate protective layer.
  • the colour sequence is preferably reversed.
  • a first printing colour is printed on a substrate, followed by the next printing colour covering or altering the first colour in some areas of the first printing colour layer. This process is repeated for all printing colours until the desired print is obtained. If the print is meant to be visible through a clear overlaying paper layer, the succession of printing colours is advantageously reversed to obtain the same printing result.
  • the unimpregnated overlaying material has a grammage between 10 g/m 2 and 120 g/m 2 . If dyes, pigments or mixtures thereof are added to the viscous polymer, these assist the optical coverage of the substrate in order to prevent any undesirable surface structures or colour of the substrate from becoming evident.
  • tannin is used in the manufacture of bonding resins and imparts a reddish brown colour to the resin. Tannin is also a known scavenger of formaldehyde. Therefore according to method of the invention for manufacturing a decorative laminate, tannin can be incorporated into the resin to provide pigmentation and to act as a scavenger for free formaldehyde.
  • the surface is provided with a structure during hot pressing, for example, by using an embossed pressplate, or an embossed continuous press belt, in the final step of hot pressing.
  • the structure produced by embossing the laminate surface is preferably aligned with a decor print located under the surface. If the decor is printed onto the overlaying material then this is achieved by aligning the overlaying material with the embossing tool. As a result, the apparent genuineness of the laminate thus produced is more convincing than laminates produced by methods according to the prior art with imprinted carrying materials having expanded non-uniformly.
  • the alignment can be achieved by various methods such as applying centering crosses in the corners of the overlaying material by which this layer can be aligned shortly before pressing.
  • Partial curing of the polymer can be conducted by heat, or radiation, or by electron bombardment. UV light is preferably used for partial curing of the polymer. As a result, the polymer can be partially cured by application of less energy in comparison with thermal polymerisation.
  • the choice of method for introducing energy into the polymer at the start of polymerisation can be selected freely and can be adapted to the preferred polymeric material.
  • dissolved dyes or dispersed pigments are used in the polymer to cover the surface of the substrate.
  • a primer can be applied under the polymer layer onto the substrate surface. This can be selected according to the porosity, absorptivity and surface structure according to the choice for a painting primer, wherein the primer is compatible with the polymer. Compatibility in the current context means that no reactions of the possibly different polymers of the primer and polymer located thereabove result in structural changes to the surface. It is also possible to heat the surface of the substrate to improve adhesion of the polymer.
  • the partial polymerisation of the resin prior to the application to the substrate surface is to a degree that it has a viscosity in excess of 40 mPa.s, and up to and including the manufacture of a powder resin.
  • the ideal polymer viscosity for application to the substrate depends on the application method.
  • the polymer can be applied to the substrate as a fine powder or granulate.
  • the layer thickness depends on the preferred degree of optical coverage of the substrate colour.
  • the polymer layer is advantageously applied to the substrate surface by any of a plurality of well known methods, not limited to spraying, dipping, brushing, roller or curtain coating or printing. Another method is powder coating. However, the ideal method can be chosen with respect to the properties of the selected polymer and substrate.
  • the preferred method of polymer application can be chosen freely, with independence of carrier materials.
  • the polymer used in the method for manufacturing a laminate according to the invention preferably has the property of at least partially curing under UV light or any other appropriate radiation. It is hereby achieved that the initially merely viscous but still flowable polymer layer which has been applied to the upper side of the substrate, is cured to such an extent that an unimpregnated paper may be applied to the surface.
  • the polymer For the polymerisation of resins, many techniques are known in the prior art to provide these with additives which form chemical radicals under UV light which for their part result in polymerisation of the monomer units in the resins.
  • the polymer should be suitable for radical polymerisation. Ionic polymerisation reactions and condensation polymerisation reactions are also feasible. However, radical polymerisation can be very well controlled by exposure time to UV light. The alternative polymerisation reactions on the other hand are generally less well controllable. If the additives do not exhibit broad-band absorption in UV light, additive and corresponding light source should be matched to one another.
  • the polymer does not only cure in UV light but also under the application of heat.
  • the selected polymer has an optimum polymerisation rate at a temperature of 150°C to 220°C.
  • the polymer should not polymerise too quickly to avoid mechanical stress in the structure which can result in surfaces fractures.
  • the speed also should not be too slow to ensure a minimum throughput of the presses and to avoid the energy consumption of the pressure plates being too high or at least unnecessarily high.
  • the afore-mentioned temperature interval corresponds to the temperature of conventional laminate presses so that existing presses can advantageously be used when using the method according to the invention.
  • the polymer for use in the method according to the invention is preferably produced by condensation of a triazine together with an aldehyde and an olefin component with the assistance of a catalyst.
  • the triazine component can be a melamine formaldehyde resin, a hydroxyl alkyl melamine or a mixture of two or more of these components. It is also well known to those skilled in the art that urea or other amino derivative or a combination of these, can be used as a substitute for melamine.
  • the aldehyde component is preferably used as formaldehyde in the form of formalin solution, or urea stabilized formalin solution, or urea formaldehyde resin or a paraformaldehyde.
  • the olefin for use in the method according to the invention is preferably selected from acrylates, crotonates, acrylamides, crotyl amides, enones, acrylnitriles or a mixture of two or more of these components, and preferably containing an hydroxy carbon chain.
  • Preferably used as catalyst in the polymer for use in the method according to the invention is: 1,4-diazabicyclo[2.2.2]octane, chinuclidine, 3-chinuclidinone, azacyclo[2.2.1]heptane or a mixture of two or more of these substances.
  • chemical radical formers such as azoisobutyronitrile are used which break down not only under the action of ionising radiation but also under the action of heat and thus form chemical radicals. These chemical radicals initiate the remainder of the curing wherein the cross-linking of the polymer chains formed is constructed especially.
  • overlaying material has been used as a synonym for overlaying paper and non-woven material.
  • resin and polymer have been used as synonyms for each other.
  • a laminate layer diagram of a laminate product according to the prior art is shown in figure 1, in which on a first side of a substrate 1 a resin impregnated decor paper 2 is laminated onto the surface of substrate 1.
  • This decor paper 2 can also be covered by a resin impregnated overlay paper 3 in order to impart additional stability to the final cured laminate layer structure exposed to mechanical and abrasive stress.
  • So called low pressure laminates also comprise a resin impregnated paper which is laid onto the opposite surface of substrate 1, in the case of laminate flooring as a balancing paper usually directed towards the non-decorative laminate side.
  • This backer paper 4 prevents, as a consequence of unequal resin contraction or moisture or thermally induced change of the structure of substrate 1, the laminate from warping or bowing.
  • resin impregnated backer paper 4 By introduction of resin impregnated backer paper 4 to the laminate manufacturing process both sides of substrate 1 are kept in a similar state resulting in cancellation of possible internal mechanical forces resulting in a warped or bowed surface of the final laminate product.
  • Figure 2 depicts a schematic diagram of the process steps according to the invention in which a a-stage resin 5a is applied to substrate 1 shown in subfigure 2a in a first process step depicted in subfigure 2b, in which the a-stage resin 5a may be applied to both or just one side of substrate 1.
  • the applied a-stage resin 5a is then partially cured in a following process step shown in subfigure 2c by the use of electromagnetic radiation, preferably UV-Light, from radiation sources 14. After partial curing a-stage resin 5a becomes partially cured b-stage resin 5b.
  • an overlaying paper or a non-woven material, 6, or a melamine coated stabilising paper 8 is placed onto the partially cured b-stage resin 5b obtained from a-stage resin 5a in subfigure 2b in conjunction with radiation treatment in subfigure 2c.
  • the materials 6 and 8 may be placed on both or on one side of substrate 1 depending on which side of substrate 1 a-stage resin 5a is applied.
  • the intermediate product obtained from process step according to subfigure 2c or 2d can undergo additional process steps, for instance to receive a decorative print or additional material layers and re-enter the process in process step according to figure 2e.
  • the laminate structure is placed between members 16 of a hot press, where an embossed or smooth pressplate or press belt 15 is used to add a structure and gloss level to the surface of the final laminate product.
  • the b-stage resin 5b from subfigure 2d then cures to its final state, called c-stage resin 5c.
  • Figure 3 shows a schematic layer diagram of a simple laminate product according to the invention having substrate 1, fully cured c-stage resin 5c and a layer of an overlaying paper or a non-woven material 6 or stabilising paper 8, whereby the materials 6 are impregnated with c-stage resin 5c in the process shown in Figure 2.
  • substrate 1 fully cured c-stage resin 5c
  • an overlaying paper or a non-woven material 6 or stabilising paper 8 whereby the materials 6 are impregnated with c-stage resin 5c in the process shown in Figure 2.
  • Not shown in this figure is a laminate with only one coated or laminated side according to the invention, with the alternative side coated or laminated according to the prior art.
  • Figure 4 is a schematic layer diagram of an intermediate product of a laminate being manufactured by an alternative embodiment of the method according to the invention, which is between process step as depicted in subfigure 2c and subfigure 2d and which carries a decorative print layer 7a printed directly onto the partially cured b-stage resin layer 5b.
  • the resin impregnated overlay paper 3 or the melamine coated stabilising paper 8, instead, is placed onto the printed and partially cured b-stage resin layer 5b in the process step according to subfigure 2d.
  • Figure 5 is a schematic layer diagram of an intermediate product of a laminate being manufactured by another alternative embodiment of the method according to the invention, which is between process step as depicted in subfigure 2c and subfigure 2d and which carries a mirror inverted and reversed print 7b on a clear overlay paper 10, which is printed onto the underside of the clear overlay paper 10.
  • the clear overlay paper 10 is then covered with a resin impregnated overlay paper 3 and re-enters the process according to figure 2 in the process step according to subfigure 2e.
  • a decorative print 7c can be printed onto an unimpregnated low basis weight decor paper 12 as depicted in the schematic layer diagram of an intermediate product of a laminate according to the invention in figure 6 and the obtained intermediate product can re-enter the process according to figure 2 in the process step depicted in subfigure 2e.
  • a decorative print layer 7a, 7b or 7c can be protected by a resin layer 13 containing additives such as abrasive resistant particles.
  • This resin layer 13 is then covered with an overlaying material 6 or a melamine coated stabilising paper 8 and the intermediate product according to figure 7 re-enters the process according to figure 2 in the process step according to subfigure 2e.
  • Figure 8 is a schematic layer diagram of an intermediate product of a laminate with a printing primer 17 arranged on top of the partially cured b-stage resin 5b to enhance printability of the partially cured b-stage resin 5b.
  • the b-stage resin layer 5b may contain pigments and/or dyes 19 to cover the appearance of substrate 1 in the final laminate product.
  • the intermediate product according to figure 8 can re-enter the process according to figure 2 in the process step according to subfigure 2d.
  • FIG 9 a laminate layer structure of an intermediate product of a laminate is shown seen from above with centering crosses 18 for alignment of an embossing press plate 15 or embossing press belt 16 with a decorative print 7a, 7b or 7c within the laminate layer structure.
  • Figure 10 schematically depicts vapour phase deposition onto overlaying materials 6 in a vacuum chamber (not drawn) in that vapour 21 of a material capable of sublimation 20 deposits on an overlaying material cooled by a cold finger 23.
  • Figure 11 schematically depicts the optional use of a primer below the a-stage resin layer 5a that improves adhesion of the a-stage resin 5a to the substrate 1.
  • Figure 12 depicts a schematic of the process steps according to the invention in which an a-stage resin 5a is applied to a previously impregnated overlay paper 3 as depicted in subfigure 12b.
  • the applied a-stage resin 5a is then partially cured in a following process step shown in subfigure 12c by the use of electromagnetic radiation, preferably UV light, from radiation sources 14. After partial curing a-stage resin layer 5a becomes partially cured b-stage resin layer 5b.
  • the overlay paper 3 and partially cured b-stage polymer 5b is inverted and placed onto a lay-up of one or more kraft papers, which are impregnated with phenol formaldehyde resin 9, also in a b-stage or partially cured.
  • This layer sequence is then placed onto one or both sides of a substrate 1.
  • the laminate structure is placed between members 16 of a hot press where an embossed or smooth pressplate or press belt 15 is used to add a structure and gloss level to the surface of the final laminate product.
  • the lay-up, as depicted in subfigure 12d then cures to its final state, so-called c-stage high pressure laminate, or cures to its final state, so-called c-stage low pressure laminate.
  • Fig. 13 depicts schematically a non impregnated overlaying paper 6 or low basis weight décor paper 12 stabilized prior to printing with a layer of melamine 24 applied by vapour deposition in three different alternatives, 13a, 13b or 13c, where the melamine layer 24 is applied before printing as in subfigure 13a, after printing as in subfigure 13c or where the layer of melamine is applied to a two sided printing as in subfigure 13b.

Claims (26)

  1. Procédé de fabrication d'un stratifié décoratif,
    caractérisé par l'application sur une surface de substrat (1) d'un polymère (5a) dans une première étape et ultérieurement le durcissement partiel du polymère (5a) dans une seconde étape, suivis du placement d'un papier ou d'un matériau non tissé sus-jacent (3, 6, 8) sur la-couche de polymère (5b) et enfin le durcissement total du polymère (5b) sous l'effet de la chaleur et de la pression.
  2. Procédé de fabrication d'un stratifié décoratif selon la revendication 1,
    caractérisé par le revêtement et/ou l'imprégnation du papier ou du matériau non tissé sus-jacent (6) dans une étape parallèle ou par l'utilisation d'un papier ou un matériau non tissé sus-jacent (3) pré-enduit et/ou imprégné à l'aide d'une résine synthétique, préférentiellement à l'aide d'une résine synthétique riche en mélamine.
  3. Procédé de fabrication d'un stratifié décoratif selon la revendication 2,
    caractérisé par l'enduisage du papier ou d'un matériau non tissé sus-jacent (6) par dépôt en phase vapeur.
  4. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'impression d'un motif décoratif (7a) sur la surface de polymère partiellement durcie (5b).
  5. Procédé de fabrication d'un stratifié décoratif selon la revendication 4,
    caractérisé par le traitement préalable du polymère partiellement durci (5b) en chargeant ou en appliquant un primaire d'impression (17) sur la surface afin d'améliorer la qualité d'impression.
  6. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'impression du papier ou du matériau non tissé sus-jacent (6, 8) dans une étape parallèle, dans laquelle le matériau sus-jacent (6, 8) est transparent ou pigmenté.
  7. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'application d'une couche de mélamine stabilisante au moyen d'un dépôt en phase vapeur avant l'impression.
  8. Procédé de fabrication d'un stratifié décoratif selon la revendication 7,
    caractérisé par l'utilisation d'une image spéculaire (7b) et/ou d'une image imprimée en ordre inversé (7b) sur un papier sus-jacent clair (10) ou sur un matériau non tissé (10) dans laquelle le papier sus-jacent (10) ou le matériau sus-jacent (10) est placé avec la face imprimée sur la couche de polymère (5b).
  9. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'emboutissage d'une structure de surface pendant le durcissement final du polymère.
  10. Procédé de fabrication d'un stratifié décoratif selon la revendication 9,
    caractérisé par l'alignement de l'outil d'emboutissage avec l'impression du décor sur le polymère partiellement durci, le papier sus-jacent ou le matériau non tissé.
  11. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation de chaleur, de radiation ou de bombardement électronique pour le durcissement partiel du polymère.
  12. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'une presse chauffante (16) pour le durcissement final du polymère.
  13. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'une plaque de compression texturée ou d'une bande continue (15) destinée à l'emboutissage de la surface.
  14. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par la coloration du polymère (5a) en utilisant des colorants ou pigments appropriés dispersés et/ou dissous dans le polymère.
  15. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par la coloration du polymère (5a) en utilisant une poudre ou une dispersion de tannin.
  16. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'application d'un primaire (22) sur la surface de substrat avant de la recouvrir avec le polymère.
  17. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'un polymère ayant une viscosité supérieure à 40 mPa.s jusqu'à une résine en poudre solide.
  18. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'application du polymère (5a) sur le substrat (1, 3) par toute méthode appropriée, mais non limitée à la pulvérisation, le trempage, le brossage, le revêtement au rouleau, le couchage par voile, l'impression ou le revêtement en poudre.
  19. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'un polymère (5a) durcissant partiellement sous l'action de radiation électromagnétique.
  20. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'un polymère (5a) durcissant sous l'effet de la chaleur, préférentiellement un polymère durcissant entre 130° C et 220° C.
  21. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications précédentes,
    caractérisé par l'utilisation d'un polymère (5a) produit par condensation d'une triazine avec un aldéhyde et un composant à l'oléfine à l'aide d'un catalyseur.
  22. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications 1 à 20,
    caractérisé par l'utilisation d'un polymère (5a) produit par condensation de l'urée ou autres dérivés amino ou d'une triazine, ou toute combinaison de ceux-ci, avec un aldéhyde et un composant à l'oléfine à l'aide d'un catalyseur.
  23. Procédé de fabrication d'un stratifié décoratif selon les revendications 21 et 22,
    caractérisé par l'utilisation d'une mélamine, d'une résine mélamine formaldéhyde, de mélamines hydroxyalkylées ou d'un mélange de deux ou plus de ces substances en tant que composant de triazine.
  24. Procédé de fabrication d'un stratifié décoratif selon les revendications 21 à 22,
    caractérisé par l'utilisation de formaldéhyde sous la forme de formaline ou de formaline stabilisée en urée, de résine urée-formol ou de paraformaldéhyde.
  25. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications 21 à 22,
    caractérisé par l'utilisation de résines acryliques, de crotonates, d'acrylamides, d'amides de crotyle, d'énones, de nitriles acryliques à chaîne carbonée hydroxy, ou d'un mélange de deux ou plus des ces substances comme l'oléfine.
  26. Procédé de fabrication d'un stratifié décoratif selon l'une quelconque des revendications 21 à 22,
    caractérisé par l'utilisation de 1,4-diazabicyclo[2.2.2]octane, de quinuclidine, de quinuclidinone, d'azacyclo[2.2.1]heptane, d'azoisobutyronitrile ou d'un mélange de deux ou plus de ces substances en tant que catalyseur de polymérisation, particulièrement le durcissement partiel du polymère.
EP04013999A 2004-05-10 2004-06-15 Méthode pour produire un stratifié Active EP1595718B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04013999T PL1595718T3 (pl) 2004-05-10 2004-06-15 Sposób wytwarzania laminatu
EP04013999A EP1595718B1 (fr) 2004-05-10 2004-06-15 Méthode pour produire un stratifié

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04011040 2004-05-10
EP04011040 2004-05-10
EP04013999A EP1595718B1 (fr) 2004-05-10 2004-06-15 Méthode pour produire un stratifié

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EP1595718A1 EP1595718A1 (fr) 2005-11-16
EP1595718B1 true EP1595718B1 (fr) 2007-08-15

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EP (1) EP1595718B1 (fr)
AT (1) ATE370003T1 (fr)
DE (1) DE602004008226T2 (fr)
ES (1) ES2291777T3 (fr)
PL (1) PL1595718T3 (fr)

Cited By (6)

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WO2008134823A1 (fr) 2007-05-07 2008-11-13 Depco-Trh Pty Ltd Améliorations dans la fabrication de papiers ou non-tissés imprégnés de résine à l'état b
WO2009132395A1 (fr) * 2008-04-30 2009-11-05 Depco-Trh Pty Ltd Procédé de fabrication d'un matériau de revêtement imprimé
WO2010048668A1 (fr) * 2008-10-28 2010-05-06 Depco-Trh Pty Ltd Procédé pour la fabrication d'un stratifié décoratif
AU2011202474B2 (en) * 2010-05-26 2015-05-14 Depco-Trh Pty Ltd Laminate manufacture with novel solids application
US9358576B2 (en) 2010-11-05 2016-06-07 International Paper Company Packaging material having moisture barrier and methods for preparing same
US9365980B2 (en) 2010-11-05 2016-06-14 International Paper Company Packaging material having moisture barrier and methods for preparing same

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NL1030913C2 (nl) * 2006-01-13 2007-07-17 Trespa Int Bv Werkwijze voor het door middel van curtain coating aanbrengen van een of meer lagen op een ondergrond, alsmede decoratieve folie.
DE102007012651A1 (de) * 2007-03-16 2008-09-18 Johns Manville Europe Gmbh Direkt-dekorierbare Verbundwerkstoffe, Verfahren zu deren Herstellung und deren Verwendung
WO2008101678A2 (fr) * 2007-02-21 2008-08-28 Johns Manville Europe Gmbh Nouveaux matériaux composites, procédé pour leur fabrication et leur utilisation
RU2464176C2 (ru) * 2007-02-21 2012-10-20 Джонс Мэнвилл Юроп Гмбх Композитные материалы, пригодные для непосредственного декорирования, способ их изготовления и их применение
DE102007013132B4 (de) † 2007-03-15 2022-02-03 Flooring Industries Limited, Sarl Verfahren zum Herstellen eines flächigen, bedruckten Bauteils
DE102007015969B4 (de) * 2007-04-03 2010-11-18 Flooring Technologies Ltd., Portico Building Verfahren zur Herstellung einer Bauplatte
DE102007028603B4 (de) 2007-06-19 2011-04-14 Dakor Melamin Imprägnierungen Gmbh Laminat mit einer abriebfesten Dekorfolie und dessen Herstellungsverfahren, insbesondere mit einem Overlay mit besonderem optischen Effekt
US7947139B2 (en) 2007-12-14 2011-05-24 Kings Mountain International, Inc. Systems and methods for creating textured laminates
US7947138B2 (en) * 2007-12-14 2011-05-24 Kings Mountain International, Inc Systems and methods for creating textured laminate press plates
GB2464540B (en) 2008-10-20 2013-03-13 Acell Group Ltd Patterned composite product
US20100310838A1 (en) * 2009-06-03 2010-12-09 Michael Ketzer Printing of non-woven fabrics and their use in composite materials
EP2377684A1 (fr) * 2010-04-08 2011-10-19 Johns Manville Europe GmbH Nouvelles matières premières composites, leur procédé de fabrication et leur utilisation dans le domaine du revêtement de sol
EP2492109A1 (fr) * 2011-02-22 2012-08-29 Spanolux N.V. Div. Balterio Procédé de fabrication de panneau et panneau
DE102012017220A1 (de) * 2012-08-31 2014-03-27 Interprint Gmbh Dekorpapier, flächiges Produkt, Verfahren zur Herstellung von Dekorpapier, Verwendung eines Dekorpapiers
RU2520525C1 (ru) * 2013-05-29 2014-06-27 Константин Сергеевич Сахаров Бумажно-слоистый пластик (варианты)
RU2520345C1 (ru) * 2013-05-29 2014-06-20 Константин Сергеевич Сахаров Бумажно-слоистый пластик (варианты)
RU2520529C1 (ru) * 2013-05-29 2014-06-27 Константин Сергеевич Сахаров Бумажно-слоистый пластик (варианты)
PL236570B1 (pl) * 2014-10-16 2021-01-25 Schattdecor Spolka Z Ograniczona Odpowiedzialnoscia Sposób wytwarzania trójwymiarowych powierzchni strukturalnych zwłaszcza na płytach drewnopochodnych
DE102016203529A1 (de) * 2016-03-03 2017-09-07 Koenig & Bauer Ag Verfahren und Vorrichtung zum Herstellen eines Dekorsubstrates, Verfahren zur Herstellung eines Laminats sowie Stoffgemisch zur Vorbehandlung eines zu bedruckenden Bedruckstoffs

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US5466511A (en) * 1991-07-18 1995-11-14 Nevamar Corporation Coated transfer sheet and laminate produced therefrom
JP3043532B2 (ja) * 1991-12-13 2000-05-22 大鹿振興株式会社 樹脂強化化粧板の製法
JPH09262934A (ja) * 1995-09-20 1997-10-07 Dainippon Printing Co Ltd リコート用化粧シート及びリコート用化粧材
EP1169139B1 (fr) * 1999-01-22 2010-12-08 Coveright Surfaces Holding GmbH Film en resine synthetique pour produits stratifies et procede de fabrication correspondant

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008134823A1 (fr) 2007-05-07 2008-11-13 Depco-Trh Pty Ltd Améliorations dans la fabrication de papiers ou non-tissés imprégnés de résine à l'état b
WO2009132395A1 (fr) * 2008-04-30 2009-11-05 Depco-Trh Pty Ltd Procédé de fabrication d'un matériau de revêtement imprimé
WO2010048668A1 (fr) * 2008-10-28 2010-05-06 Depco-Trh Pty Ltd Procédé pour la fabrication d'un stratifié décoratif
AU2011202474B2 (en) * 2010-05-26 2015-05-14 Depco-Trh Pty Ltd Laminate manufacture with novel solids application
US9358576B2 (en) 2010-11-05 2016-06-07 International Paper Company Packaging material having moisture barrier and methods for preparing same
US9365980B2 (en) 2010-11-05 2016-06-14 International Paper Company Packaging material having moisture barrier and methods for preparing same

Also Published As

Publication number Publication date
EP1595718A1 (fr) 2005-11-16
DE602004008226D1 (de) 2007-09-27
ATE370003T1 (de) 2007-09-15
PL1595718T3 (pl) 2008-01-31
ES2291777T3 (es) 2008-03-01
DE602004008226T2 (de) 2008-05-15

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