CN104640643A - Method of coating a building panel with digital printing/coating technique - Google Patents
Method of coating a building panel with digital printing/coating technique Download PDFInfo
- Publication number
- CN104640643A CN104640643A CN201380047467.5A CN201380047467A CN104640643A CN 104640643 A CN104640643 A CN 104640643A CN 201380047467 A CN201380047467 A CN 201380047467A CN 104640643 A CN104640643 A CN 104640643A
- Authority
- CN
- China
- Prior art keywords
- coating
- digital
- layer
- panelling
- ultraviolet
- 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.)
- Pending
Links
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
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- IWVKTOUOPHGZRX-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.COC(=O)C(C)=C IWVKTOUOPHGZRX-UHFFFAOYSA-N 0.000 description 1
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- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical compound OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- B44C1/24—Pressing or stamping ornamental designs on surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
- B27N7/005—Coating boards, e.g. with a finishing or decorating layer
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
- E04F15/041—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members with a top layer of wood in combination with a lower layer of other material
- E04F15/042—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members with a top layer of wood in combination with a lower layer of other material the lower layer being of fibrous or chipped material, e.g. bonded with synthetic resins
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
- E04F15/045—Layered panels only of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/51—One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0076—Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
Abstract
The disclosure relates to building panels, especially floor panels and a method to produce such building panels that comprise a decorative surface and a transparent protective layer, which is applied by a digital coating. The disclosure describes a vision control system that may be used to adapt a digital print or a digital embossing to a specific panel surface.
Description
Technical field
The present invention relates in general to the panelling with ornamental wearing face, especially the field of floor and wallboard.The present invention relates to the building panelling with such decorative surface and the manufacture method manufacturing such panelling.
Application
Multiple embodiment of the present invention is particularly suited for being applied in the floor that can be formed by such floor panel, and this floor panel comprises central layer, decorative layer and is positioned at the transparent wearing layer above decorative layer.Therefore, the problem about technology, known system of below and the description of object of the present invention and feature using as not limiting example for this application and especially for being similar to traditional wood floors and laminate flooring carries out.
It is emphasized that multiple embodiment of the present invention can be used to manufacture superficial layer in any type panelling such as building panelling, building panelling is wallboard, ceiling and furniture parts and analog such as.
Background technology
Major part laminate flooring is all manufacture according to the manufacture method being commonly called direct pressing laminating (DPL).Such laminate flooring comprises the lower balance layer of the fiberboard core of 6-12 millimeter, the upper decorative surface layer of 0.2 millimeters thick of laminar structure and the 0.1-0.2 millimeters thick of laminar structure, plastics, paper or similar material.
The feature of the superficial layer of laminate flooring is that ornamental and wearability utilizes two stacked independent ply of papers to obtain usually.Decorative layer normally printing paper and wearing layer is the transparent covering paper comprising granule aluminium oxide.
The facing paper of printing and covering paper are through melmac impregnation process and in large laminator, are laminated into wood fibre based central layer.Wherein, in this large laminator, described resin solidifies under high heat and high pressure and paper is laminated into core material.
Laminate flooring is made into multiple larger panel of the size usually with 2.1 × 2.7m, and they are divided into the multiple independent floor panel of the size usually with about 1.3 × 0.2m after extrusion.Edge carries out processing and providing mechanical interlock mechanism afterwards.
Laminate flooring also can utilize printing technology manufacture.An advantage is, extrusion operation can be avoided and without the need to printing paper to provide ornamental wearing face.
The floor panel with the laminating surface of directly printing comprises high density fiberboard (HDF) central layer identical with DPL type.Decoration is directly printed onto on central layer.This manufacture method is quite complicated and only just cost-saving in very large production-scale situation.
In one step, coloured water-based primer and the composition of encapsulant are applied on central layer, to provide adhesive force and Essential colour to this central layer.Such coating is called as adhering coating in below.
The multicolour printing machine that printing stock ink is used to by having the roller be directly printed onto on pre-sealed central layer carrys out printed decoration.Printed decorative layer must be protected in order to avoid wearing and tearing.Paper substrate cover layer and this panel is used to be extruded in traditional laminate extruder in some cases.The most frequently used method realizing high abrasion resistance strength adopts anti abrasive ultraviolet encapsulant, and it to be laid on stamp by roller subsequently and to solidify under action of ultraviolet radiation.Structurized and synchronized surface is also formed by knurling rolls.Multiple layer is applied on this stamp.Priming coat is used to build the thickness of this protective layer and top coat is used to provide final structure and scratch resistance.Patterned structure can be formed by such knurling rolls, and namely these knurling rolls also can have and mutually aim at/accurately superimposed structure with printing cylinder.
Direct printing technology can by digital printing technical substitution, and this digital printing technology more flexibly and can manufacture economically under small production scales.The difference mainly print steps of these two kinds of methods, in this print steps, graining roll is substituted by the non-contacting typography of number, and the image wherein expected directly is applied on pre-completed central layer.The protection final clear coat of digital image and patterned surface normally with directly print in type used identical.Can manufacture any type or printing images, but surface texture is always limited to the form of knurling rolls or the structural membrane extruded towards surface.
Digital printing also can be used to be printed onto on the scraps of paper that use in tradition stratum die pressing product.On the upper surface that this digit printing can be applied to the facing paper comprising primary colours or be applied to cover paper lower surface on and or can be made into afterwards between dipping.Stamp also can be formed in there are or not have primary colours crude paper on and this paper can in extrusion process by be applied in below measurements of Digital Printing Papers or above the resin of powder, liquid level or impregnated paper indirectly flood.Unprocessed paper can be connected to central layer and the thinner undressed paper of this fair permission to use and can alleviate orientation problem before digital printing step.
Researched and developed " without the paper " floor type made new advances recently, wherein the surface of solids comprises the roughly uniform mixture be made up of fiber, binding agent and abrasion resistant particles.Such floor is called as WFF (wood fibre floor).
This abrasion resistant particles is preferably alumina particle, and this bonding agent is preferably thermosetting resin as amino resins, and fiber is preferably wooden base.In major applications, in this uniform mixture, include decorative particles such as pigment.Usually, all these materials are preferably applied to solid layer HDF central layer being also cured under heat and pressure 0.1-1.0 millimeter with the mix powder form of drying.
Can to obtain compared to known technology and especially compared to multiple advantages of traditional laminate flooring:
Abrasion-proof gauge surface layer in homogeneous mixture form can be made into thicker and can obtain quite high wearability.
Can utilize dark embossing and obtain new FA decorative effect by independent ornament materials, it is interior and consistent with embossing that this independent ornament materials can be integrated into uniform superficial layer.
Can utilize thicker and there is more highdensity uniform superficial layer to strengthen impact resistance.
This uniform superficial layer can comprise such particle, and these particles can produce positive role in noise-proofing and moisture resistance.
Can production cost be reduced, this is because can the low material of use cost and even can use recycled materials, and multiple production stage can be saved.
Powder technology is highly suitable for manufacturing decorative surface layer, and this layer is the copy of stone and pottery.But the design of more difficult formation such as wooden decorative.But nearest digital powder printing has been developed and can by digit printing being injected the FA design that powder forms any type before impression.
The floor with wood grain surfaces manufactures in a multitude of different ways.Traditional solid wood grain floor has developed into the engineering floor of the layer of wood on the central layer that has and be laid into and be made up of wooden thin plate, HDF or glued board.Most of such floor is all the preform floor transport as having such wood grain surfaces, and wherein this wood grain surfaces is coated with multi-layer transparent layer in the factory.For rolling method/ultraviolet (UV) solidification method, wood floors are one of them maximum application, and this rolling method/ultraviolet curing method applies laminated coating structure with sealing and protection wood grain surfaces.Eco-friendly water-based ultraviolet curing urethane is normally used for protective clear layer.This application process generally includes polytype hyaline layer-UV priming paint, UV putty, UV sealant and UV finish paint.Every layer of coating has himself specific function.Surface characteristic similarly is wearability, hardness, resistance to marring etc. can be conditioned to meet different quality requirements.All these layers applied by roll coater and each individual course all through ultraviolet curing.High-quality wood floors can comprise the protective clear layer of about 60-120 gram/m and can have about 5-10 layer or more layer, and these layers are applied by the roller coat with medium ultraviolet (UV) curing systems in multiple steps.
As first step, adhesive coating roller coat applies to be formed in the bonding agent between timber and final coating afterwards.Depend on timber variety used in floor and the FINAL APPEARANCE of expectation, step subsequently can be packing station, can apply transparent ultraviolet filler herein and ultraviolet furnace solidifies this filler in one or more steps.Following step applies priming coat, and described priming coat provides the primary thickness of transparent surface and the top final structure finally comprising one or more top coat utilizes roll applicator to apply.The quantity of used coating depends on manufacturer, but each coating is travelling through ultraviolet curing oven afterwards.
The manufacturer of nearly all high-quality wood floors all uses abrasion resistant particles as alumina particle in some or multiple layer, to strengthen the wearability of hyaline layer.The top coat of transparent damage resistant comprises nanometer granule, and it provides the wearability of height.
Recently, some laminate flooring produces, and wherein, transparent ultraviolet base table coating is positioned at the top on the surface through resin-dipping, such as, on the impregnated facing paper of melamino-formaldehyde or covering paper, to provide the more smooth surface being similar to timber.Even have the floor of foil surfaces or PVC surface, namely so-called LVT (Self-sinking type elasticity exempts from adhesive floor) floor, also uses transparent polyurethane coating as top coat, to improve resistance to soiling and the wearability of vinyl floor.
To be applied by roller and structurized transparent protective layer is the very important part of floor surface technology, and if such application can with low cost more and flexibly mode realize and mainly improve and to design and the performance of correlation of attributes will be main advantage.
the definition of some terms
Hereinafter, the visible surface of mounted floor panel is called as in " front ", and being called as at " back side " towards opposition side of the floor downwards of floor panel." superficial layer " refers to so all layers, be panelling its decorate properties and its anti-wear performance are provided and be applied near front, all layers on the central layer in the whole front that preferably covers floor.
" coating " refer to be distributed on the surface for the protection of or decoration layer of substance.
" stamp " refers to decoration or image.
" adhesive coating " refers to and is used to improve the layer of connection between core material and other layer being coated on this sandwich layer or the application of priming paint.
" priming coat " refers to the layer being used to the thickness strengthening protective clear layer.
" top coat " refers on the priming coat that is laid in provide the upper strata of scratch resistance and final glossiness.
" upwards " to refer to towards front and " downwards " refers to towards the back side.
" pigment for digital printing ink " refers to the material of the color changing reverberation or transmitted light due to the selective absorbing of wavelength.
" dye ink " refers to coloring matter, and it has affinity to by the substrate be applied to.Dyestuff applies with the form that also can comprise the aqueous solution of bonding agent usually, and mordant can be needed to improve not discoloration on fiber of dyestuff.Compared with undissolvable granule pigment, dyestuff is complete water-soluble as sugar.
" moisture or water-based inks " refers to a kind of ink, and wherein water is used as the liquid in ink.Water fluid carries pigment.Bonding agent is also there is so that pigment is bonded to substrate in system.
" solvent-based ink " refers to so a kind of ink, and it contains three kinds of major parts usually as fluid carrier, pigment and resin.Technically, solvent-based ink only refers to the oil based vehicle part of ink usually, and other parts are remained on liquid form and are applied to surface by spraying evaporation by disposable by this part.
" ink of ultraviolet-curing or coating " refers to such ink or coating, and it solidifies after the application in ultraviolet furnace under being exposed to intensive ultraviolet.
known technology and their Problems existing
Common trait for all these floors as above comprising the protective clear layer be positioned at above decorative layer is that such hyaline layer is applied by roller.About the problem being applied hyaline layer by roller will be described for wood floors below.
The roller coat that Fig. 1 a shows panelling 1 applies, and this panelling 1 is conveyed through the below of roller and ultraviolet furnace on conveyer belt 21.Hyaline layer L1, L2, L3 are applied by roller 22a-c and are cured in multiple steps by ultraviolet furnace 23a-c.
The roller coat that Fig. 1 b shows floor panel 1 applies, wherein this floor panel 1 has wooden/wood grain surfaces 2 and mechanical interlocking system, this mechanical interlocking system comprises slip feather 10 for vertically locking joining edge and slip feather draw-in groove 9 and has the list structure 6 of locking element 8, wherein, this locking element 8 coordinates with the locking slot 14 on joining edge, for the level locking between edge.When coating be applied in be not on completely smooth surface time, it is very complicated that roller coat applies.Be difficult to avoid forming spot in the minor face of floor panel, wherein, roller 22 keeps to the side 15a away from edge 15b.Such problem is relevant especially to such floor panel, namely such floor panel applies as multiple single floor panel, namely the form not being the large-scale panel being divided into multiple single floor panel is after coating coated, and such problem is especially relevant to the single floor panel being provided with mechanical interlocking system before coated surfaces.Wherein, this mechanical interlocking system comprises edge, this edge be not vertical by lower limb 16 on support completely.Also be difficult to coating at inclined-plane 15a, the 15b at long limit and minor face place and locking geometry may be changed at coating in the excess accumulation of described edge.Multiple independent floor panel can be coated before fastening system and/or inclined-plane are formed.The method provides very sharp keen edge, described sharp keen edge can comprise crackle and multiple inclined-plane must apply in a separate operation, and wherein, the excess accumulation of coating material can form less desirable visual edge effect.
The Coating Production Line with roller coating station and ultraviolet curing oven normally very long and can be that 50-100 rice is long.The restricted lifetime of rubber rollers and must to carry out cleaning structure roller when applying new coating be expansive and only can form predetermined embossed pattern, is substituted by another knurling rolls unless this embossed pattern can not change this structure roller in process of production.If coating is by precision, higher and more flexible and non-contacting mode applies will be main advantage.
Below describes the common technique for providing digital printing of industrial application.Multiple method described below can be used alone or combinationally uses the digital printing of the material formed in multiple embodiment of the present invention or digital applying.
The digital printer of fine definition adopts nonimpact printing technique.This printing machine has print head, this print head in point-device mode by ink droplet from print head " injection " to substrate.
Many journeys printing (also cry scanning printing) is so a kind of printing process, wherein print head above substrate transverse shifting repeatedly with synthetic image.Such press speed is slow, but a little print head can generate larger image.
Industry printing machine is normally based on print pass method, and the method adopts fixing print head, and the width of this print head is corresponding with the width of printed medium.Printed substrate is moved below print head.Such printing machine there is high power capacity and they be equipped along feeding direction follow one another alignment multiple fixing print head.Each print head prints a kind of color.Such printing machine can for often kind of applied customization.
Fig. 1 c shows single pass printer 35, and it comprises 5 digital print head 30a-e, and they utilize black pipe 32 to be connected to the ink reservoir 31 being filled with different colours ink.These ink guns utilize digital data line 33 to be connected to digital control unit 34, what this digital control unit 34 controlled ink droplet uses the speed that panelling must to be transplanted on accurately with conveyer belt 21 below print head, to ensure the high quality image comprising multiple color.This ink normally at print head, circulate between ink conduit and ink reservoir, in order to avoid stopped nozzles.
The normal width of industrial print head is about 6 centimetres and can prints out arbitrary length.The large area region of 1-2 rice can utilize the digital printer of the many typesettings and printings brush comprising side-by-side registration to print out.
Recently, print head has been modified into can the different color of sprayed coating 5 kinds, and this print head can be about 20-30 centimetre wide.Digital printer can to print out high-resolution image more than the speed of 60 ms/min.Constantly significant improvement is being there is in speed, resolution ratio, investment cost and ink cost.
DPI (dots per inch) is used to the press quality defining digital printer.It describes resolution ratio in the mode of the dots per inch in digit printing.
Relatively low resolution ratio is normally at below 100DPI.This allows high print speed printing speed and low ink content.The resolution ratio of 200DPI is enough to provide the stamp that can use in floor applications usually.300DPI is such as the wood grain structure being enough to print the same quality be applied at present in traditional laminating wooden floor usually.Industry printing machine can print and have 300-1000DPI resolution ratio and even more high-resolution pattern.
Described ink can be " some color " ink.In such embodiments, this ink has specifically been made and and the proprietary color be modulated into for specific image.Except usually being formed except color by mixed C MYK-color diagram, the ink forming some color pixel has specific predetermined color.
Described printing can be " full version printing ".This means that visual printed decoration is mainly through being applied in powder or being applied to the ink pixel formation on paper surface.In such embodiment, the color of powder bed or primary colours have limited impact usually on visible pattern or decoration.
Described printing also can be " local printing ".The color of another basic unit is wherein a kind of color visual in final decoration.Compared with full version printed design, use owing to minimizing ink and increase printing capability, the amount of the ink of the area that printed pixel covers and use can reduce and escapable cost.
Printing can based on the printing of printing four color separation (CMYK) color principle.This is that a kind of 4-look comprising cyan, magenta, yellow and black is arranged.Their mixing will be provided relatively little color space/colour gamut.In order to increase particular color or whole colour gamut, color a little can be increased.The color of point can be any color.Extra color such as orange, green, blue, red, light grey and shallow magenta and pale bluish green or white also can be used.These colors may be used singly or in combin.These colors are mixed and controlled by the combination of software and hardware (print engine/print head).
innovation AB develops new technology, and digit printing can be injected in powder bed by this new technology.The stamp of the fine definition in powder bed needs special software program, to control print hardware and to adjust to the distance of powder bed and powder used according to specific ink, printing process, print head.This software program is hereinafter referred to as " digital powder raster image processing " or DP-RIP and it is used to control print speed printing speed, drop location, ink drop size and shape.
DP-RIP can be modified into and allow stamp or decoration can be that the different degree of depth is in place on such as powder primary surface in the horizontal direction in sizes and in the vertical direction.This can be used to form 3D effect to strengthen wearability when adopting vitreous fibre.A specific advantage is, this stamp is to downward-extension from the top of this superficial layer.This allows a part of stamp will always from the teeth outwards, even be also like this when a part of surface is worn.Without the need to the protective layer of original design can be confused.
Be made into the fact of the powder be cured after printing owing to stamp, obtain this novel " digital jet printing " or DIP.Stamp is embedded in cured layer instead of as when using traditional printing methods and is applied on layer.
DIP method can be used in all powder-based material that can solidify after printing, such as, be applied in molding composite and similar plastic material.But DIP method especially in powder packets containing wood-fibred, and alternatively mixture as melamine resin of such as hard, wear-resistant granule and bonding agent time particularly suitable.Superficial layer also can comprise thermoplastic, such as vinyl particle, and it is applied in substrate in the form of a powder.This allows stamp can be injected in vinyl powder particle.Even if in such material, the design of improvement and the wearability of improvement also can be obtained.
Have to use suitable print head to obtain high press quality and speed in powder basic unit and other layer as above.Print head has multiple small nozzle, and they can eject droplet of ink (drop on demand ink jet technology-DOD) in a controlled manner.The size of each drop can change between 1-100 picoliter according to ink type and printhead type.The print head of the larger drop that can eject up to 200 picoliters can be designed.Some print heads can eject different drop size and they can print gray scale.Other print head only can eject a kind of fixing drop size.
Multiple different technologies can be used to drop to eject nozzle.
Thermal print head technology adopts has a series of printing box all comprising the microlaser cavity of heater, and they are each is configured to by photolithography.In order to spray drop from each chamber, a current impulse is through heating element heater, and fast vaporizing is to form bubble in chamber to cause ink, and the formation of bubble causes pressure greatly to increase, thus promotes ink droplet through nozzle injection to substrate.From comprising Canon, most of user's ink jet printers of Hewlett-Packard and company of Lexmark of the U.S. adopt thermal print heads.
Most of commercial and industrial ink jet type print head and certain user's printing machine such as those printing machines produced by Seiko Epson Corporation adopt piezoelectric print head technology.Ink after each nozzle piezoelectric of filling in chamber is used to alternative heating element heater and uses.Upon application of a voltage, piezoelectric changes shape, and this creates the pressure pulse forcing and spray in drops out from nozzles in a fluid., because it is without the need to volatile component, and there is not the problem of coking in the ink type that piezoelectricity (also referred to as piezoelectric type) ink-jet printer allows specific heat ink-jet printer wider.Can use and be permitted eurypalynous ink as the ink of dye ink, solvent-based ink, latex ink or ultraviolet-curing.
Ink for floor applications is individually mixed by the colored pigment and multi-chemical that use UV stable usually.The water-based inks comprising pigment be especially be applicable to and the high-quality printing process of low cost can be provided in multiple different materials.
The above-mentioned description for various known arrangement is only the characterization of applicant, is not to admit that above-mentioned any description is prior art.Above-mentioned multiple technologies are known and are alone applied instead of all combinations as above and method.
Except adopt stamp injected powder floor except, the floor of most of traditional digital printing all must have the protective clear layer applied by roller.This digital application technology is mainly used in obtaining the advantage relevant to the possibility forming high-definition picture in a flexible way.But; relate generally to the other side adopting the mode of digital non-compression to lay the technology of the possibility of material very exactly be not also fully utilized or develop; especially do not have and do not intend form image and intend to be applied to protect the material of image, decoration or surface texture to be combined in a large number, thus they can be used to floor applications or need in other application of similar performance.
If digit printing and digital embossing also will be able to be advantages with being combined by the decorate properties that basis is decorated and structure provides of panelling and structure.Wherein, panelling is such as having the panelling of the wood grain surfaces of decoration and the structure can improved by local stamp and/or embossing.This cost-effective mode can provide high surface quality.
EP 2 108 524 (floor industrial group) describes a kind of method of panelling of fabricated ribbon coating, and wherein this panelling has surface, and this surface comprises the projection formed by two or more digit printings stacked on top of each other.
WO 2011/064075 A2 (Theodor Hymmen Holding Gmbh) describes a kind of method for forming three-dimensional structure from the teeth outwards.The panelling with the decorative surface of printing is coated with the clear varnish of radiation curing, and this clear varnish utilizes digital ink-jet method to apply to be intended to form structure sheaf.This structure is by using different drop sizes and multiple printed layers to be formed.This structure can be coincide from the decorative pattern of printing and form different glossiness by transparent ink.The decorative surface of this printing can be the panel of paper, paillon foil or band coating.Digit printing can be applied in the structure that formed by number and this stamp can be covered by the transparent protective layer applied by traditional roller.
US 2011/0171412 (
) describe a kind of direct digit printing be applied on HDF panel.The optical characteristics of this panel is visible at least partly and is bonded in the design of decorative layer.This decoration is covered with transparent protective layer by roller coat.
JP2008-265229 describes coating and provides the method for patterned basic material.This basic material such as timber, resin material or membrane material are coated with resilient resin bed.Decorative pattern is formed by hard protective layer, and this hard protective layer is applied on this flexible resin bed by ink-jet coating.
These methods are also not suitable for being used in such as such wood floors; namely in such wood floors, protective layer is applied on multiple single panelling, and these methods can not be used for providing the part that is formed as final decoration or surface texture and the have to digit printing that adapts with basic engineering and the structure of each single panelling or digital embossing.
Summary of the invention
The overall object of some embodiment of the present invention is to provide a kind of building panelling; especially a kind of floor panel; and a kind of method for making this kind of panelling with transparent protection surface; wherein, transparent protection surface has compared to the better design performance of known building panelling and/or different design performances and/or cost structure.
At least the specific purpose of some embodiment improves the especially surface quality of wood floors panelling and the design of wooden building panelling, these wooden building panellings are coated in multiple single panelling usually, wherein, each panelling comprises sizable design variation and blemish.
At least another specific purpose of some embodiment is to provide and a kind ofly as wood floors panelling and is especially provided with improving one's methods of the multiple single panelling of mechanical interlocking system at their edge and/or inclined-plane place for applying independent wooden building panelling.
Above-mentioned purpose is exemplary, and multiple embodiment of the present invention can realize different or other object.
A first aspect of the present invention is a kind of method applying coating to the building panelling with wooden decorative surface, comprises the following steps:
Digital printing head is utilized the coating of ultraviolet-curing to be applied on the decorative surface of the wood grain of building panelling; And
Utilize the coating of this ultraviolet-curing of ultraviolet photo-curing, thus form transparent protection superficial layer, wherein, it is visible that described decorative surface is through described transparent protection superficial layer.
This building panelling can be floor panel.
The coating of this number is non-contact method, compared to traditional roller coating method, this method provides important advantage.
This building panelling such as floor panel can be the single panelling with size, and the size of this single panelling is substantially identical with the size of the final building panelling comprising machined edges.
This building panelling such as floor panel can comprise mechanical interlocking system at two opposed edge places.
This building panelling can comprise inclined-plane in edge.
The coating of this ultraviolet-curing can be liquid polyurethane mass.
The coating of this ultraviolet-curing can be the polyurethane of water base ultraviolet curing.
This curable coating can be the coating of radiation-curable.The coating of this radiation-curable can pass through ultraviolet, heat radiation, electron beam etc. solidification.
Coating such as the coating of ultraviolet-curing of this radiation-curable can comprise acrylic or methacrylic acid methylmethacrylate monomer or acrylic or methacrylic acid methyl esters oligomer.The coating of this radiation-curable can comprise acrylic resin.This acrylate or methacrylate monomers or acrylate or methacrylate oligomers can be epoxy acrylates, epoxy methacrylates, polyester acrylate, urethane methyl methacrylate, polyester acrylate, polyester methyl methacrylate, polyether acrylate, polyethers methyl methacrylate, acrylic acrylate, acrylic arid methacrylic acid methyl esters, organic silicon acrylic ester, organosilicon methyl methacrylate, melamine acrylate, melamine methyl methacrylate or their combination.Above-mentioned example is monomer through radical reaction polymerization or multiple examples of oligomer.
Above-mentioned monomer or oligomer can form the composition of the coating of radiation-curable.
This decorative surface can comprise stamp, especially digit printing.
This digital printing head can be piezoelectric print head.
This digital printing head can be designed to apply drop, is especially of a size of the drop of about 60-200 picoliter.
The coating of this ultraviolet-curing can comprise abrasion resistant particles and/or scratch resistance particle.
The coating of this ultraviolet-curing can comprise the patterned surface with pit and projection.
This patterned surface can be aimed at mutually with this decorative surface.
A second aspect of the present invention is a kind of floor panel, and this floor panel has central layer, comprises wood materials, the superficial layer of stamp and hyaline layer.Lower hyaline layer can be positioned at the below of this stamp, and upper hyaline layer can be positioned at the top of stamp, and this lower hyaline layer can be the polyurethane of ultraviolet curing, and a part of wooden material surface and stamp form a part for this visible surface layer.This stamp can be coincide with the visible design of independent floor panel and/or structure at least in part.
Even when the poor timber of using character is as central layer, such wood floors also can have very exquisite design.The stamp applied by digital printing head can be suitable for each single floor panel and this stamp can be used to form and improves the basic engineering of floor panel or the pattern of structure and/or embossing.
On this, hyaline layer can comprise water-based polyurethane.
On this, transparent top-layer can through embossing process.
On this, hyaline layer can through embossing process, and wherein said embossing is aimed at mutually with stamp.
A third aspect of the present invention is that a kind of utilization provides the digital image control system of digital input on building panelling, form the method for decoration to digital printing head, and the method comprises the following steps:
The digital image on the surface of building panelling is formed by digital image control system;
Described digital image control system is utilized to provide digital input based on described digital image to described digital printing head;
Utilize digital printing head and utilize the stamp adapted at least partly with the digital image on the described surface of this building panelling to carry out digital printing and go out the described surface of this building panelling at least partially.
Major advantage is, digital vision system can be utilized to analyze each single panelling and the bootable print head applying stamp in the surface portion needing improvement design or structure of computer program.
This building panelling can be floor panel.
This stamp can comprise colored pigment.
The surface of this panelling can comprise transparency material, and this transparency material is ultraviolet curing and this transparency material forms patterned structure after hardening.
Can utilize in cost-effective mode according to the building panelling of multiple embodiment of the present invention and preparation method and produce without the digital coating method of pressure type the very perfect decorative pattern that wearability is strong and impact resistance is strong.The embossed surface structure of the mutual aligning be even randomly formed can be formed with digital coating method.
The embodiment of various aspect and details can be combined with multiple embodiment of other side and details.
A fourth aspect of the present invention is to provide a kind of method applying building panelling, and the method comprises the following steps:
Transparent protection surface is formed by the mode utilizing digital applicator head to apply ultraviolet curing coating on the decorative surface of building panelling;
Utilize this coating of ultraviolet curing.
This building panelling can be floor panel.This decorative surface can be timber.
Accompanying drawing explanation
The present invention will to be described in more detail with reference to appended exemplary drawings in conjunction with multiple embodiment hereinafter, wherein:
Fig. 1 a-c shows known roller coating method and digital printing method;
Fig. 2 a-b shows digital coating method;
The number that Fig. 3 a-c shows in multiple hyaline layer injects printing;
Fig. 4 a-c shows digital printing and embossing.
Detailed description of the invention
Fig. 2 a shows the floor panel 1 comprising solid wood central layer 3 and decorative surface 5, and this decorative surface 5 is the top of this solid wood central layer.This floor panel 1 can comprise inclined-plane 15a, 15b in the edge of floor panel 1.Adhesive coating L1, the priming coat L2 of multi-layer transparent and top coat L3 are applied on this wood surface.This adhesive coating and this priming coat are applied by roller coat and through ultraviolet curing.This top coat is applied by number in the present embodiment.
Cardinal principle and the equipment of digital coating process illustrate in figure 2b.Digital coating element 36 comprises the digital printing 30 being used as digital applicator head.Preferably, this digital printing 30 is fixed.This transparent top coat L3 is preferably applied on priming coat L2 by this digital printing 30.The coating of this number can so realize, namely wherein between panelling and this digital printing 30, there is not any contact, and coating applies with the formation from this digital printing 30 drop ejected towards this decorative surface, and wherein said decorative surface can be included in the adhesive coating L1 below priming coat.
The ultraviolet curing oven 23 with ultraviolet is preferably placed on the rear of digital coating element 36 along feeding direction and makes this coating can almost in seconds instantaneous solidification, especially when use there is the polyurethane coating of the ultraviolet curing of suitable Photoepolymerizationinitiater initiater.The digital printing 30 being preferably piezoelectric heads preferably has the ability ejecting the drop with about 50 – 200 picoliters or larger drop size.Drop can have 30-100 micron or larger diameter and can form the liquid spot being greater than 100 microns on a surface.Described drop preferably by so in place, to make them stacked on top of each other.The stacked combination by drop size and droplet position like this obtains.The multiple print heads arranged successively along feeding direction also can be used to form pantostrat, even when each drop be apply with grating pattern.
This ultraviolet curing coating preferably has the polyurethane mass curable with the water-based ultraviolet of digital printing 30 viscosity adapted.Water based polyurethane dispersion agent preferably uses as coating in digital printing head.They can be eco-friendly and scientific and technological more progressive compared with similar solvent-based coating.They can not contain isocyanates and can have zero content or the low-down volatile organic matter of content.They have the superperformance relevant to hardness, coloring and wearability, impact strength and thermal adaptability.
Polyurethane dispersant is the polyurethane/polyurea of the short grained complete reaction of discrete polymer and such particle can be made into the size with about 0.01-5.0 micron and therefore can use in digital piezoelectric print head or other similar print head.They can have the solids content of 20-70% and many different layers with different hardness can utilize digital coating method to obtain.Polyurethane dispersant can such as with acrylic emulsion blending to reduce costs in some applications.They also can comprise the granule of the wear-resisting and scratch resistance that can be used by piezoelectric heads, such as aluminium oxide.Such particle should be quite little, because the jet hole in most of digital printing head is about 10 microns.Preferably, abrasion resistant particles is less than 5 microns and more preferably, described abrasion resistant particles is about 1 micron or less.
Abrasion resistant particles can apply preferably by the mode be sprinkling upon on such as priming coat by the particle in dry powder form, and wherein, this priming coat is preferably in a liquid state and is not yet cured.Another priming coat or top coat can be applied on abrasion resistant particles layer.Advantage is, can the bulky grain of plug nozzle not be applied by digital printing head.Independent spreading allows to apply the particle with 10-100 micron size.
Coating is stored in container for paint 31 in liquid form, and this container for paint can utilize coating passage 33 to be connected to digital printing 30.The digital control unit 34 utilizing data wire 33 or wireless mode to be connected with print head and conveyer belt controls drop size and moves the speed of the conveyer belt 21 of panelling 1 relative to digital printing 30.
Digital coating element like this saves cost more than digital printer, because digital coating element 36 can eject much larger drop and which provides stronger ability and decrease Problems existing in the passage of print head, wherein these passages may be shut by the larger particles in ink when printing machine utilizes high-resolution and droplet to carry out work.Each digital applicator head in digital printing capitiform formula can be designed to only apply one deck and without the need to the applying of the drop of coordinating such different printing head to traditional multiple color digital printing like that.Wherein, in the printing of traditional multiple color digital, the droplet-shaped of aiming at side by side with grating pattern becomes digital pattern.
Special digital printing head can be designed to allow very large drop within the scope of coating 200-400 picoliter and larger, and jet hole can be greater than 20 microns.Such digital printing head is unsuitable for being used as forming traditional print head that high-definition picture is target usually.They can be designed to apply large stacked drop in mode that is quite a large amount of and low cost.The each print head being mainly used as digital applicator head can be designed to apply 10-20g/m in one way applying step
2or more.
Coating Production Line can closely and ultraviolet curing oven can be in place near digital coating element.Coating can very accurate and non-compression mode to be easier to ultraviolet curing coating to be applied on edge than roll manner, on inclined-plane 15a, 15b of edge and to not being on completely smooth surface, this be not completely smooth surface such as brush finish wood grain surfaces or manual cut system wood grain surfaces or embossing papers for lamination base plate or powder base plate.The protective layer of ultraviolet curing is applied to by digital coating method on the floor of nearly all type, to improve surface property or design.Therefore, according to one embodiment of present invention, some part on this surface can adopt known method to be formed to obtain basic intensity, design or structure, and last multilayer applies by number coating.The floor with the surface comprising paper, powder cork, vinyl and even the analog such as stone and ceramic tile can be applied by number, to improve surface property.
The liquid coating of ultraviolet curing provides such advantage, and namely coating was liquid before it is exposed under UV light.Which enhance the productivity of digital coating element and many such as relevant to solvent type ink problems can be avoided.
Digital coating device can have multiple print head certainly.This digital coating can be applied on single panelling or on large-scale sheet material.This large-scale sheet material is divided into multiple panelling after coating.
Above-mentioned principle can preferably be used to apply priming coat L2 and/or adhesive coating L1.The all hyaline layers being used to the image protecting wood grain surfaces or printing can be applied.Digital coating can be used to apply so multiple hyaline layers, and namely described hyaline layer has the film thickness being equivalent to 5-10 gram/m.Even such as the thicker layer of 10-20 gram/m also can be made into, 5-10 coating station can be utilized to reach the gross thickness of about 100-120 gram/m.Panelling also can repeatedly through a coating station.
Fig. 3 a shows the feature that digit printing P1 can be applied in stamp on hyaline layer and such and is that hyaline layer L2 is positioned at the below of stamp, and another hyaline layer L3 can be positioned at the top of stamp P1.Preferably the panel surface on the top of wood materials 5 can be visible and can form the final incrustation of a part and decorative surface 2 together with stamp P.This floor panel 1 can be provided with inclined-plane 15a, 15b in its edge.At least the hyaline layer of top applies preferably by number coating.Stamp P2 also can be injected in this wet clear coat before ultraviolet curing.
Wherein the stamp P1 such method be applied on hyaline layer or when stamp P2 is injected into hyaline layer can be used to the design performance that is improved, because utilize multiple hyaline layers between stamp, some patterns can by stacked on top of each other and this can provide the 3-D view being similar to the surface of stone with transparent or semitransparent crystal.Such 3-D view can partially or completely by applying method and formed with digital printing or the digital traditional roller combined that applies.
Fig. 3 b shows the first production stage combining digital printing and digital Coating Production Line.Digit printing P1, P2 are applied on cured layer or wet hyaline layer.If this stamp is such as be injected into wet layer of polyurethane, this stamp solidifies by ultraviolet furnace 23.
Fig. 3 c shows digital coating element 36, and transparent priming coat or top coat can be applied on digit printing by it.Coating in ultraviolet furnace 23 by ultraviolet curing.Transparent or translucent adhesive coating can be applied to the below of this stamp by number.
Advantageously, if this digital coating element 36 is wirelessly connected or utilizes data wire to be connected to (as shown in Figure 3 c) on digital printing unit 35, make digit printing and digital coating can be adjusted to and be adapted to the specific design being combined as basis with stamp and coating.Vision system 39 also can be connected by number, and digital coating and/or stamp can adapt to specific surface texture and design.Vision system such as can use together with applying step with patterning step in production line, to form the digital image on the surface of the panelling preferably comprising wooden primary surface 2.This panelling can be single floor panel, and it can be solid wood panelling or can be the panelling comprising the central layer being coated with the layer of wood with such as 0.3-3 millimeters thick.The great deviation of defect such as in color, crackle, tieing, repeating effect etc. on such surface can be gone out by vision system 39 determination and analysis, and goes out preferably by the digital image and the determination and analysis that this image and the image be stored in the internal memory of vision system compared analyzing panel surface.This system can be " intelligence " and new image and adjust structure can improve effect.Can for different timber varieties special Software for producing.The visible surface of this panelling can come by digital printing at least in part based on the analysis of digital image, thus utilize digit printing cover or regulate these defects, or print out some surface portion to form more attractive wood grain design as formed the wood grain structure improved.Substituting or supplementing as digit printing, can apply transparent coating based on the analysis of digital image.Such as, the glossiness of this panel surface can be changed and more substantial liquid substance can be applied, to cover the crackle or pit that detect in wood grain surfaces.When digital camera is taken pictures, under this surface can be exposed to various types of light and this can improve and detect the possibility of specified defect.
Digital printing (VCDP) method of visual spatial attention as above also can be used to other floor except wood floors.Traditional printing paper or foil surfaces comprise the repeating effect obtained from printing cylinder.Such effect partly can be eliminated by adopting the digital printing method of visual spatial attention.The method is preferably combined with such production stage, and namely in this production stage, stamp substrate was connected on central layer before final digital printing step.Main advantage is, need not in a precise manner by place on panelling for the substrate of having printed, because position and/or specific design detect by vision system 39 accurately, and digital printer can apply the complementary design with very big accuracy.When making paper using, if such paper may not be favourable containing the body paper of any resin.Necessary thermosetting resin can inject from the basalis be positioned at below substrate and/or inject from the top layer be applied to printed surface.This top layer can be the powder bed comprising abrasion resistant particles and thermosetting resin, or traditional cover layer and resin can be cured through heat and pressure.Digital coating as above also can be used as top layer.
This VCDP method also can be used to form decoration in the WFF floor with powder primary surface.The powder comprising one or more colors can be sprinkling upon on panel and can basis of formation design.Vision system and computer system can be analyzed this basic engineering and provide necessary number input for digital printer, and this digital printer is adjustable or improve this basic engineering in the second step.Advantage is, this basic engineering can provide the major part of pigment and the amount of the ink applied by digital printer is significantly reduced, and is preferably reduced to little gram/m, as 1-5 gram/m.In some applications, 3 grams/m or less ink content just can be enough.This method also can be used to form surface design on ceramic tile.
This VCDP method is very suitable for being combined with bonding agent and powder (BAP) printing process, and in this BAP method, pattern or image are formed by ink gun number, and this ink gun is sprayed coating liquid binder on the surface not containing any pigment only.This bonding agent can be water-based material, and this water-based material comprises ethylene glycol, and this ethylene glycol provides suitable viscosity.This pigment is sprinkling upon on whole liquid pattern randomly by another equipment.Some pigment defined with bonding agent identical patterns cling by this bonding agent, and the pigment that other is not stuck is removed.This wherein pigment and liquid binder can be provided with the image of conventional digital printing technology same quality by two step method applied separately and this quadrat method for the formation of the low-down method of cost of basic engineering, this basic engineering is be conditioned in the last digital printing step of water-based inks or improve comprising pigment based ink paint.This powder can be transparency material, and such as, by the wood fibre bleached, and BAP also can be used to form the transparent surface of embossing.
Fig. 4 a shows this digit printing P and can be applied in or inject in top coat L3 and/or priming coat L2.This decorative surface 5 can be layer of wood is such as solid wood, wood chip or veneer, and it can be adhered on central layer 3, such as, on thin layer central layer, high density fiberboard (HDF) or glued board.This digit printing is used to the design improving this decorative surface.
Fig. 4 b illustrates that the coating of this number can be used to provide digital embossed surface (being after this called as DES).The first top layer L3a-L3d with discontinuous cross section such as imitating wood grain structure can be provided.This layer is applied in the transparent image form with vertical extension.This wet three-dimensional structure can have through ultraviolet curing and preferably discontinuous feature cross-section second or the 3rd coating can be applied on ground floor.These discontinuous layers can be used to build the patterned surface of the vertical extension with similar or various luster degree.There is such as about 0.1 millimeter or the patterned structure spent more deeply can be formed with any shape.
This method can be used to form senior structure in mode very flexibly, and embossing can with printed surface digit printing precise match especially as illustrated in fig. 4 c.This stamp P coordinates with structure L3a-c and the multiple single part of digital image can provide in very clear and definite surface texture form, in this surface texture, such as specific texture be printed on be formed with multiple small rut 37 part surface on, and the other parts of image can be formed in the surface comprising multiple kick 38.The digital embossed surface of mutual aligning like this, is called that DERIS technology can form multiple single panelling so afterwards, and described single panelling is unique and not relevant to design or structure any repeating effect.Due to without the need to such as knurling rolls in the conventional technology or matrix film, more wide region almost endless structural design can by very flexibly and the effective mode of cost manufactured.
DERIS is preferably combined with digital printing image.Such image can be printed on paper, on paillon foil, on panel material or be injected in powder primary surface as above.The coating element 36 of this digital printer 35 and formation top layer L3 is connected to by preferably digital the computer regulating this surface design and surface texture.
DERIS technology even can be used to single patterned surface coating be combined with the single wood parquet with different designs or is provided for single patterned surface coating to combine with other panelling any being formed with surface design or surface texture.This is a kind of advantage, and it is a kind of advantage that digital printing especially is wherein used to improve in the application of wood grain surfaces design.The timber kind of inferior quality improves by digital printing as above.Such as, the digital image of the wood grain surfaces of panelling makes by the vision control system comprising digital camera or digital scanner.This preferably provide the clear coat of final digital embossed surface coated before linearly produced.This vision control system can with computer program coupling, this computer program can analyze this digital image so can adjust this digital coating, matches with the design of wood grain structure and each single panelling to make this digital coating.
Digital embossing (VCDE) method of such visual spatial attention is not adopted in floor applications.VCDP and VCDE can be combined and can form decoration and the structure of the low-down improvement of cost.
VCDE is particularly useful for forming patterned structure on panelling, and wherein, the multiple decorative parts in panelling are not linearly digital in print steps before formation.Even if under these circumstances, production efficiency and quality also can improve, because, without the need to using the delivery unit of high-quality.This delivery unit is at different print steps, this panelling mobile accurately between applying step and applying step, and these steps must be all the final surface qualities to provide high-quality coordinated.The vision system that preferably also can be combined with navigation system between the various fabrication steps can be that cost is low-down relative to known method.
Described all embodiments can in conjunction with and all hyaline layers can comprise colored pigment.
This digital coating method also can be used to apply other chemicals, such as glue on panelling, is preferably water base adhesive.
The polyurethane of digital coating ultraviolet curing also can be used to other application with the method obtaining three-dimensional structure and be not only building panelling as above.Digital printer and ultraviolet furnace can be used to the polymeric layer vertically applying and solidify various types of numerous ultraviolet curing, to form structure and the model of the complexity with 1-10 millimeter or larger vertical development length.Ground floor can be applied in substrate, and this substrate is mobile in ultraviolet furnace also returns applying new layer subsequently.Such as two digital piezoelectric heads also can be so in place, with make wherein ultraviolet furnace between them and this substrate can move through this ultraviolet furnace from the first print head and to enter in the second print head and again to return.This order can repeat many times and depend on the viscosity of liquid polymer, and every layer can be that 0.1-0.3mm is thick or even thicker.This liquid polymer can be such as polyurethane.Usually solidify this polyurethane without the need to extra material, and these two print heads can use the liquid polyurethane of the ultraviolet curing of identical type.These two print heads also can use different materials, and this material can be used to shorten hardening time.This manufacture method can be combined with vision system and the three-dimensional structure of local can be formed in the multiple parts clearly defined specially of the various objects that can comprise various material.Three-dimensional structure can have the different color injected by number in the polyurethane of this ultraviolet curing.
Such digital 3 D method can be used to provide such matrix, and namely this matrix can be used as sheet material, and this sheet material extrudes to provide embossed surface when hardening this surface at laminate and powder base plate in extruder.
Can expect there are the various modification to multiple embodiment as herein described, these modification still fall into as defined in the appended claims in scope of the present invention.
Such as, can expect, adopt this curable coating of ultraviolet curing can be substituted by other radiation-curing method.Also can expect, the present invention can be used to the radiation-curable couting of other type.
As being clear that from description, coating can adopt digital printing head to be applied directly on the surface of the building panelling forming this decorative layers, and can be applied on the intermediate layer that is positioned on the surface of building panelling.
Hereinbefore, can expect, transparent referring to has the transparency substantially identical with transparency conventional in the coating on conventional wooden floor.This transparent protection superficial layer is so far forth transparent, visible to make being through this transparent protection superficial layer at the decorative surface of the timber of below.
Example
Example 1:
Digital image be applied in comprise high-density fiber (HDF) plate panelling on.Imagery exploitation single pass printer generates, and this single pass printer comprises 5 fixing piezoelectric print head.Ink is the water-based inks comprising colored pigment.
The piezoelectric print head with 50 picoliter drop sizes is used to the polyurethane transparent layer applying water-based ultraviolet solidification, and it is equivalent to 10g/m
2film.Above-mentioned material solidifies and can obtain the digital image of the hyaline layer with number coating in ultraviolet furnace.
Example 2:
Have wood grain design digital image be applied to comprise HDF plate panelling on.This imagery exploitation single pass printer generates, and this single pass printer comprises 5 fixing piezoelectric print head.Ink used is the water-based inks comprising colored pigment.
The piezoelectric print head with 50 picoliter drop sizes is used to the polyurethane transparent layer applying water-based ultraviolet solidification, and it is equivalent to 10g/m
2film.Above-mentioned material solidifies in ultraviolet furnace.
Weight is 5g/m
2another kind of like hyaline layer utilize drop size be 50 microlitres piezoelectric print head apply.This layer is applied to the transparent image coordinated with digital image.
Above-mentioned material solidifies and can obtain the design of such wood grain in ultraviolet furnace, and namely in the design of this wood grain, wood grain structure designs with wood grain and mutually aims at.
Digital coating also can be used to sealing the margin and/or fastening system 9,10 in order to avoid make moist, to eliminate quack sound or to change the frictional behaviour of the working face in fastening system.Main advantage is that liquid substance with high accuracy can be applied and can avoid the less desirable excessive spraying on such as this surface.Print head is normally used for from the vertical spraying liquid material in the position far away apart from several millimeters, this surface.Print head can be used to from distance that nearly 10 millimeters and farther distance spraying liquid material and such spraying can be carried out from the position relative to this surface being various angle such as from 0 °-10 °, 10 °-20 °, 20 °-45 ° or even from upper or spray from the lower angle position in being greater than 45 degree.This allows, and the combination of the multiple print heads in place in multiple angles can be adopted to spray the fastening system of the geometry with improvement.This liquid substance can be liquid wax, and it becomes soft formation being cooled to room temperature afterwards.
Claims (21)
1. apply a method for coating to the building panelling (1) with graining surface (5), comprise the following steps:
Digital printing head (30) is utilized the coating of ultraviolet-curing to be applied on the graining surface (5) of building panelling (1); And
Ultraviolet (23) is utilized to solidify the coating of this ultraviolet-curing; thus forming transparent protection superficial layer (L1, L2, L3), it is visible that wherein said decorative surface (5) is through described transparent protection superficial layer (L1, L2, L3).
2. method according to claim 1, wherein, this building panelling (1) is floor panel.
3. method according to claim 1 and 2, wherein, this building panelling (1) is the single panelling with certain size, and the size of this single panelling is substantially identical with the size of the finished architectural panelling comprising machined edges.
4. according to method in any one of the preceding claims wherein, wherein, this building panelling (1) comprises mechanical interlocking system (9,10,6,8,14) at two opposed edge places.
5. according to method in any one of the preceding claims wherein, wherein, this building panelling (1) comprises inclined-plane (15a, 15b) in an edge.
6. according to method in any one of the preceding claims wherein, wherein, the coating of this ultraviolet-curing is liquid polyurethane mass.
7. according to method in any one of the preceding claims wherein, wherein, the coating of this ultraviolet-curing is the polyurethane of water base ultraviolet-curing.
8. according to method in any one of the preceding claims wherein, wherein, this decorative surface (5) comprises stamp (P).
9. according to method in any one of the preceding claims wherein, wherein, this digital printing head (30) is piezoelectric print head.
10. according to method in any one of the preceding claims wherein, wherein, this digital printing head (30) is designed to apply drop, is preferably of a size of the drop of about 60-200 picoliter.
11. according to method in any one of the preceding claims wherein, and wherein, the coating (L2, L3) of this ultraviolet-curing comprises abrasion resistant particles and/or damage resistant particle.
12. according to method in any one of the preceding claims wherein, and wherein, the coating (L2, L3) of this ultraviolet-curing comprises the patterned surface with pit (37) and projection (38).
13. methods according to claim 12, wherein, this patterned surface is aimed at mutually with this decorative surface (5).
14. 1 kinds of floor panels (1), this floor panel (1) has central layer (3), comprise wooden material surface (5), stamp (P) and hyaline layer (L1, L2, L3) superficial layer (2), it is characterized in that, lower hyaline layer (L1) is positioned at the below of this stamp (P), and upper hyaline layer (L3) is positioned at the top of stamp (P), wherein, this lower hyaline layer (L1) comprises the polyurethane of ultraviolet-curing, and wherein, a part for stamp (P) and wooden material surface (5) forms a part for visible surface layer (2), and this stamp is aimed at the visible design of single floor panel and/or structure at least in part.
15. floor panels according to claim 14, wherein, on this, hyaline layer (L3) comprises water-based polyurethane.
16. floor panels according to claims 14 or 15, wherein, on this, hyaline layer (L3) is through embossing process.
17. floor panels according to any one of claim 14-16, wherein, on this, hyaline layer (L3) and stamp (P) alignedly carry out embossing process mutually.
18. 1 kinds utilize the digital vision control system (39) providing number to input to digital printing head (30) in the upper method forming decoration of building panelling (1), and the method comprises the following steps:
The digital image on the surface (2) of building panelling (1) is formed by digital vision control system (39);
Described digital vision control system is utilized to provide digital input based on described digital image to described digital printing head (30);
Utilize digital printing head and utilize the stamp adaptive at least partly with the digital image on the described surface (2) of this building panelling (1) to carry out digital printing and go out the described surface (2) of this building panelling (1) at least partially.
19. methods according to claim 18, wherein, this building panelling is floor panel.
20. methods according to claim 18 or 19, wherein, this stamp (P) comprises colored pigment.
21. methods according to any one of claim 18-20, wherein, the surface (2) of this building panelling (1) comprises transparency material, and this transparency material is ultraviolet curing and this transparency material forms patterned structure after hardening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112411.2A CN110076060A (en) | 2012-07-13 | 2013-07-10 | Apply the method for coating to building panelling using digital printing/coating technology |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261671249P | 2012-07-13 | 2012-07-13 | |
| SE1250830 | 2012-07-13 | ||
| US61/671,249 | 2012-07-13 | ||
| SE1250830-5 | 2012-07-13 | ||
| PCT/SE2013/050884 WO2014011110A1 (en) | 2012-07-13 | 2013-07-10 | Method of coating a building panel with digital printing/coating technique |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910112411.2A Division CN110076060A (en) | 2012-07-13 | 2013-07-10 | Apply the method for coating to building panelling using digital printing/coating technology |
Publications (1)
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| CN104640643A true CN104640643A (en) | 2015-05-20 |
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| CN201910112411.2A Pending CN110076060A (en) | 2012-07-13 | 2013-07-10 | Apply the method for coating to building panelling using digital printing/coating technology |
| CN201380047467.5A Pending CN104640643A (en) | 2012-07-13 | 2013-07-10 | Method of coating a building panel with digital printing/coating technique |
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| CN201910112411.2A Pending CN110076060A (en) | 2012-07-13 | 2013-07-10 | Apply the method for coating to building panelling using digital printing/coating technology |
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| EP (1) | EP2872260B1 (en) |
| CN (2) | CN110076060A (en) |
| BR (1) | BR112015000295A2 (en) |
| CA (1) | CA2878266A1 (en) |
| HR (1) | HRP20230085T1 (en) |
| RU (1) | RU2636516C2 (en) |
| WO (1) | WO2014011110A1 (en) |
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|---|---|---|---|---|
| CN105960332A (en) * | 2014-01-31 | 2016-09-21 | 塞拉洛克创新股份有限公司 | Method of printing digital image on substrate attached to panel and water-based ink for digital printing on substrate |
| US11884097B2 (en) | 2016-05-20 | 2024-01-30 | Flooring Technologies Ltd. | Method for producing an abrasion-resistant wood material panel and production line therefor |
| CN110121581A (en) * | 2016-12-23 | 2019-08-13 | Xylo科技股份公司 | The plate for imitating organic plank including special decoration edge |
| US11280095B2 (en) | 2016-12-23 | 2022-03-22 | Xylo Technologies Ag | Panels imitating organic wood planks comprising specially decorated edges |
| CN113365850A (en) * | 2019-01-22 | 2021-09-07 | 地板技术有限公司 | Method for manufacturing wear-resistant artificial board |
| US11440341B2 (en) | 2019-01-22 | 2022-09-13 | Flooring Technologies Ltd. | Method for producing an abrasion-resistant wood board |
| CN113365850B (en) * | 2019-01-22 | 2023-04-04 | 地板技术有限公司 | Method for manufacturing wear-resistant artificial board |
| US11872837B2 (en) | 2019-01-22 | 2024-01-16 | Flooring Technologies Ltd. | Abrasion-resistant wood board |
| CN113348094A (en) * | 2019-01-23 | 2021-09-03 | 地板技术有限公司 | Method for producing a wear-resistant and water-resistant multi-layer panel and panel produced by means of said method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2872260A4 (en) | 2016-08-17 |
| EP2872260B1 (en) | 2023-01-04 |
| RU2636516C2 (en) | 2017-11-23 |
| EP2872260A1 (en) | 2015-05-20 |
| WO2014011110A1 (en) | 2014-01-16 |
| CA2878266A1 (en) | 2014-01-16 |
| HRP20230085T1 (en) | 2023-03-17 |
| RU2015103149A (en) | 2016-09-10 |
| BR112015000295A2 (en) | 2017-06-27 |
| CN110076060A (en) | 2019-08-02 |
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