EP1749676A1 - Process and installation for making a printing surface, specially for ink-jet printing, paper sheet and article - Google Patents

Process and installation for making a printing surface, specially for ink-jet printing, paper sheet and article Download PDF

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Publication number
EP1749676A1
EP1749676A1 EP06015619A EP06015619A EP1749676A1 EP 1749676 A1 EP1749676 A1 EP 1749676A1 EP 06015619 A EP06015619 A EP 06015619A EP 06015619 A EP06015619 A EP 06015619A EP 1749676 A1 EP1749676 A1 EP 1749676A1
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EP
European Patent Office
Prior art keywords
paper web
synthetic resin
resin
liquid
paper
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.)
Granted
Application number
EP06015619A
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German (de)
French (fr)
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EP1749676B1 (en
Inventor
Jörg R. Bauer
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Individual
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Individual
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/72—Coated paper characterised by the paper substrate
    • D21H19/76—Coated paper characterised by the paper substrate the substrate having specific absorbent properties
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/504—Backcoats
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group

Definitions

  • the invention relates to a method and an apparatus for producing a surface which can be printed in particular by means of an ink-jet printing method.
  • the invention further relates to a paper web having a surface that can be printed in particular using an ink-jet printing method, and an article that can be printed in particular using an ink-jet printing method.
  • Ink-jet or inkjet printing methods allow the formation of almost any pattern in, depending on the hardware and software equipment, high quality and precisely predetermined orientation to a surface to be printed.
  • the patterns that have the look of precious wood surfaces can be created by scanning from a master or synthetically with graphics programs. Contrast, color, size, etc. of the patterns can be varied by means of known electronic data processing methods and adapted to the respective surface.
  • the type and quality of the surface to be printed is relevant.
  • plates or sheets or other items from inexpensive using hardened resins or other binders solidified press materials, such as fiber or particle materials to produce and, optionally after a grinding process to provide a primer and then to print.
  • films such as synthetic resin films, or completely resin-impregnated papers and printed.
  • a thin film of a base paper with pigment coating on the printing side of the base paper is known, which is impregnated starting from the opposite side of the pigment sheet pigment with a impregnating resin.
  • the pigment coating forms a barrier layer for the impregnating resin, so that the impregnating resin is not up to the printable Surface can push forward.
  • the pigment coating influences the physico-chemical properties of the raw paper surface which are decisive for the quality of a printable pattern by the inkjet printing process, so that the printability is changed compared to an untreated base paper.
  • a base paper for a recording material for ink-jet printing method which contains 5 to 55% by weight of a filler, is free of engine sizing agents and impregnated with an impregnating resin, wherein the resin absorption from the impregnating resin is adjusted so that the base paper on the back side has a liquid absorption of at most 20 grams / m 2 .
  • the back side is the side opposite the sides to be printed.
  • the resin can be applied from one side or from both sides. In any case, the surface to be printed is more or less impregnated with resin.
  • the invention is based on the object to provide with an ink jet printing process printable objects, on the surfaces of which produce producible patterns, especially in terms of appearance highest quality requirements.
  • a first solution to this problem is achieved by a method according to claim 1.
  • Claims 2 and 3 are directed to two advantageous embodiments of the method according to the invention, with which it is achieved that the printing side of the paper web remains wholly or at least substantially free of synthetic resin.
  • Claims 6 to 8 are directed to advantageous ways in which a paper web according to the invention can be applied to a base body.
  • Claims 9 and 10 characterize a paper web according to the invention.
  • Claim 11 indicates a printable article provided with a paper web according to the invention.
  • the claim 12 indicates a device for carrying out a method according to the invention.
  • the invention provides surfaces which correspond to conventional paper surfaces in terms of their properties required for printing, which are optimally adapted to the desired printing result in a manner known per se by the selection of the paper and the dyeing liquid and optionally a pretreatment of the surface to be printed.
  • the invention allows the immediate implementation of the possibilities created by electronic data processing and the highly developed ink-jet or inkjet technology to be applied directly to the printing of objects.
  • the invention is suitable for substantially all types of base papers having absorbency or capillarity. Coated papers, fine papers and base papers can also be used.
  • the basis weight is, for example, 30 to 300 g / cm 2 . No separate tube receiving layer is required.
  • the top layer of a paper web according to the invention is both paintable and laminatable.
  • the resin layer is an integral part of the paper web according to the invention.
  • the resin can be a conventional impregnating resin in the paper industry, for example from the group of diallyl phthalates, epoxy resins, urea-formaldehyde resins, uric acid-acetyl ester copolyesters, melamine-formaldehyde resins, melamine-phenol-formaldehyde resins, phenol-formaldehyde resins. Resins, poly (meth) acrylates or unsaturated polyester resins.
  • 10 denotes a section of a paper web, for example a commercial paper sheet with predominantly wood cellulose fibers and a high proportion of white pigment, and a surface density of between about 50 and 90 g / m 2 .
  • the paper web 10 is simply calendered so that its fiber structure has an open porosity or absorbency toward the surfaces, as indicated schematically by the oblique parallel lines. It is understood that the pores or microchannels are drawn only schematically and are in fact also unaligned according to the disordered fiber structure of the paper web 10. In the left-hand portion of FIG.
  • the paper web 10 is in the raw state, while in the right-hand region it is impregnated on its underside 12 with a synthetic resin, for example a commercially available melamine resin.
  • a synthetic resin for example a commercially available melamine resin.
  • the first in a known manner is thin and cures, especially under heat.
  • the amount of melamine resin 14 applied to the underside 12, its viscosity, basis weight, fiber type, fiber size and binder type (10), its thickness and porosity, and temperature are matched to one another such that the melamine resin 14 is the paper web 10 from the bottom 12 to the top 16 is not completely saturated or penetrated, but the adjacent to the top 16 portion of the paper web 10 wholly or at least substantially free of melamine resin (indicated by black dots) remains and the absorbency of its raw state remains unchanged.
  • FIG. 2 shows an example of how the underside 12 of the paper web 10 can be coated.
  • a rotatable roller 18 is immersed in liquid melamine resin 14 received in a container 20.
  • the paper web 10, from which optional later cuts are cut, is guided over the surface of the roll 18 wetted with melamine resin and thereby coated.
  • the amount of melamine resin applied to the underside of the paper web 10 depends on the process parameters, such as viscosity of the melamine resin, immersion depth of the roll 18, surface finish of the roll 18, diameter of the roll 18, contact pressure between the paper web 10 and the roll 18, transport speed of the paper web etc.
  • FIG. 3 shows schematically how the paper web coated with melamine resin 14 on the lower side of FIG. 1 can be used to produce an article whose surface can be printed with a high quality pattern.
  • FIG. 3 is divided from left to right into three sections a), b) and c).
  • the section a) shows a section of a base body 22, on which the paper web 10 is laminated by the melamine resin coated bottom 12 of the paper web 10 is pressed and heated to the top of the base body 20, so that the cured melamine resin 14 a secure adhesion between the base body 20, which is for example a press fiber body, and the paper web 10 causes.
  • the base body 22 has a coating 24, for example made of synthetic resin, applied prior to lamination of the paper web 10 in order to harden and temper its surface.
  • the free top 16 of the paper web 10 which is not or hardly changed by the coating of the underside 12 with melamine resin, can, using conventional printing technology and data processing, for example, in an ink jet printing process, a pattern is printed in a high quality manner as indicated by the ink layer 26 (section b)), which is preferably partially absorbed by the paper web 10 prior to drying and thereby adheres very well to the paper web.
  • the dyeing liquid and the porosity or surface of the paper web are matched to one another so that the color gradient corresponds to the desired pattern quality.
  • the base body 22 laminated with the paper web 10 and printed with the ink layer 26 is shown coated with an additional protective layer 28.
  • This protective layer 28 which can be applied by a blasting or spraying process, a rolling process or otherwise, serves, for example, to protect the ink layer 26 from UV radiation and to protect it against mechanical damage.
  • the protective layer 28, which may be transparent, is in a conventional manner a synthetic resin layer of very hard, resistant plastic, in which advantageously very hard particles are incorporated.
  • FIG. 4 illustrates the production of a base body 22 completely enveloped by a paper 30.
  • the base body 22 in the form of a plate in the example shown, is finished to the size of the finished article to be produced and is finished with a blank of the size of the base body 22 Paper 30 completely laminated.
  • the paper 30 may be soaked before being applied to the base body 22 at its the inner body 22 associated with inner side melamine resin and is then cured by application of pressure and heat and attached to the base body 22.
  • a layer of still liquid melamine resin which is dimensioned such that the melamine resin does not completely impregnate the paper, as explained with reference to FIG. 1, can be applied to the surface of the base body 22 before the application of the paper 30.
  • Figure 5 shows a likewise plate-shaped base body 22, the upper and lower sides are laminated or laminated with a paper sheet 30, wherein the paper sheets 30 each before or during application to the base body 22 with resin, as explained with reference to Figure 1, partially soaked ,
  • a marginal edge 32 which is rectangular or rounded in cross-section, may be glued or laminated onto the end face, onto which the paper sheet 30 is then applied.
  • the Paper sheets 30 are either impregnated on one side with resin prior to their application or the surface to which the paper sheets are applied is coated with resin prior to their application, so that a penetration according to FIG. 1 is provided.
  • a paper blank can be used with which the main body, including the marginal edge (s), can be laminated as a whole.
  • the base bodies according to FIGS. 4 and 5 laminated with the paper can subsequently be printed in a manner known per se by an ink-jet printing process or else by another process, this resulting in an excellent pattern because of the paper surface present in the absorbent state.
  • the printed article can then be provided with a protective layer 28 according to FIG.
  • the one-sided soaked paper layer has a dual function;
  • the paper forms a lamination, hardening and, if necessary, quality improvement of the surface of the base body consisting of a low-cost material by the resin impregnation of its underside, and on the other hand, the non-resin-impregnated upper side of the paper assumes the function of an adapter or primer for the printing process, in particular the inkjet coating.
  • the basic body which may have any form suitable for lamination with paper, may consist of wood materials, plastics, fiber and / or particulate materials and also metallic materials.
  • the thickness, density and further composition of the paper depends on the requirements of both the lamination and the printing process.
  • the paper compacting resin any resin which cures especially under heat can be used.
  • the application of the resin-impregnated paper can also be done after curing of the resin by the one-sided resinated paper layer is glued or otherwise laminated on the base body.
  • liquid synthetic resin 44 In the lower storage tank according to FIG. 6, there is liquid synthetic resin 44. Water 46 is located in the upper storage tank.
  • the fibers of the paper web 10 are not aligned in the example shown, but could also be directed.
  • the rotational speeds of the application rollers 38 are advantageously such that the paper web 10 transported between them is not stressed directly or in shear.
  • liquid resin 44 penetrates from the bottom into the paper web. From the top water 46 penetrates into the paper web.
  • the paper web forms a capillary structure containing the liquid synthetic resin and. sucking in the water.
  • the two liquids are not soluble in each other and therefore do not penetrate each other, so that the upper liquid forms in some way a barrier layer for the lower liquid and vice versa.
  • the synthetic resin 44 thus does not penetrate to the top of the paper wall 10.
  • the water 42 fillers, dyes, pigments or corundum can be added, so that an aqueous suspension is applied to the top of the paper web 10, the solids remain after evaporation of the top of the paper web and these, free of the resin 44, for a prepare the following, for example, inkjet printing optimally in accordance with the respective requirements.
  • barrier liquid and other liquids can be used which do not mix with the resin.
  • the anchoring layer is particularly stable because, as shown in Fig. 1 and Fig. 7, paper fibers protrude into the resin 14 and 44 and are stabilized after drying in their position and optionally additionally along their length by small amounts of the dried resin are stabilized.
  • the resin 44 may be different depending on the requirements. If the paper web 10 is to be laminated onto a flat-faced base 22 ( Figure 5), for example, by pressing and placing an adhesive layer therebetween, the resin may be thermoset, i. after curing by heating no longer be liquefiable or softenable. If the paper web has to be bent when applied to the base body, the synthetic resin is advantageously thermoplastic, so that it softens when the paper web is laminated onto the surface of a base body under heating. If the surface of the main body 22 is such that the paper web must be stretched to conform to three-dimensional surface structures, the paper web is stretchable, for example, having a structure with unoriented fibers that are changed in orientation or in length can.
  • a further possibility of applying the paper web to a base body is that the surface of the base body is coated with a resin cured in its cured state and the paper web is rolled onto the resin-coated base body, wherein the paper web on the body under pressure pressing roll 38 may be the applicator roll 38 of the liquid applicator 34 ( Figure 6). In this way, the method described with reference to FIGS. 6 and 7 is carried out simultaneously with the application of the paper web to the base body.
  • the printing of the paper layer can be carried out prior to its application to a base body or after its application to a base body.
  • a protective layer can be applied to the printing layer even before the application of the paper web to the base body or only after the application.
  • Fig. 8 illustrates in the figure parts A, B, C, three different ways in which a inventively impregnated according to the invention from one side with resin impregnated paper web can be applied to a body, wherein the application by rolling, in a form and / or by a vacuum process can.
  • a paper web 10 1 impregnated with synthetic resin and possibly already printed from its underside is provided with a further resin or adhesive layer 50, and applied to the base body 22.
  • the adhesive layer 50 imparts adhesion between the base body and the resin-impregnated underside of the paper web.
  • the underside of the paper web 10 2 is provided with a resin layer 52 which has penetrated partially into the paper web 10 2 and which also assumes the liability when the paper web 10 2 is pressed onto the base body 22.
  • an adhesive layer 54 is applied to the base body 22, onto which the finished paper web 10 is subsequently applied.
  • FIGS. 8A and C are two-stage processes with respect to the application of the adhesive or synthetic resin layer, while the process of FIG. 8B is one-stage.
  • Fig. 9 shows various types of base bodies 22, on which already printed or not printed and prepared only for printing paper webs 10 are applied.
  • the main body 22 according to FIG. 9A has a flat upper side, on which the paper web 10 is applied.
  • the paper web 10 may thus be stiff in itself.
  • the paper web 10 is subjected to bending, at least when it is applied, so that it must permit a partial bending of the paper web.
  • two base bodies 22 are connected over the paper web 10, so that the paper web 10 optionally forms a film hinge, for which it is suitable by appropriate consistency of the synthetic resin.
  • the main body 22 according to FIG. 9C has a three-dimensionally curved surface (its contour is different in different sectional planes from FIG. 9C).
  • the laminated to the top of the body 22 paper web 10 1 at least during their application by appropriate consistency of the base paper stretchable and the resin impregnation correspondingly soft, so that the partially impregnated with the resin paper web during lamination without wrinkles or even cracking on the surface of the base body 22 adapts.
  • the paper web 10 2 applied to the right-hand side surface according to the figure may be different from the paper web 10. Both paper webs can also be integrally formed with each other.
  • the paper web 10, and 10 2 separately from one another by, for example, first compressing the paper web 10, onto the three-dimensional surface of the main body 22, pressing it or otherwise applying it as in a soft-molding process, and then the edge of the paper web 10 1 is separated by means of a running in the plane r cut.
  • the cut can be indicated in the press mold or on the main body, so that it is subsequently carried out cleanly and the paper web 10 2 applied to the side surfaces of the main body 22 adjoins cleanly the paper web 10 1 . In this way it is avoided that the three-dimensional application of the paper web 10, forming at protruding areas distortions are avoided.
  • Fig. 10 shows different ways in the different representations of how a laminated with a paper web 10 base body 22 by means of a print head can be inkjet printed.
  • the flat upper side of the article is printed with a print head 56 which is movable in a horizontal plane.
  • the vertical side surface of the article is printed with a print head 58, which is movable in a vertical plane.
  • An article having a horizontal and vertical surface according to c) is printed with both printheads 56 and 58.
  • an article that has soft edges with large radii may be imprinted with the printhead 56 on its flat top surface.
  • the side surface including the curved edge regions are printed with a print head 60 which is pivotally and vertically movable about an axis perpendicular to the drawing paper plane.
  • the print head 62 is pivotable about an axis perpendicular to the drawing paper plane and can be moved in a horizontal and vertical direction.
  • a print head 64 is used, which can be pivoted by means of a robot about two mutually perpendicular axes and in the horizontal and vertical. If the surface of the object according to f) has curved areas only around axes perpendicular to the plane of the drawing, the print head 62 according to e) can be used.

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  • Ink Jet (AREA)
  • Laminated Bodies (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Paper (AREA)

Abstract

Production of a printable surface involves impregnating a paper sheet (10), which absorbs liquid synthetic resin over its whole thickness, with the resin (14) from one side (12) of the sheet, so that the resin does not penetrate through the whole of the sheet and the other side (16) remains free of resin. Independent claims are included for: (1) a sheet of paper (10) (specifically with a stretchable structure) having a printable surface (16), obtained by partial impregnation with resin as above; (2) a printable article, at least partially coated with a paper sheet as above; and (3) apparatus for carrying out the process, where the opposite side of the sheet is impregnated with a barrier liquid, consisting of two spaced, opposite liquid application devices between which the sheet passes, liquid synthetic resin being applied to one side of the sheet and barrier fluid to the other.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Herstellen einer insbesondere mittels eines Tintenstrahldruckverfahrens bedruckbaren Oberfläche. Die Erfindung betrifft weiter eine Papierbahn mit einer insbesondere mit einem Tintenstrahldruckverfahren bedruckbaren Oberfläche und einen insbesondere mit einem Tintenstrahldruckverfahren bedruckbaren Gegenstand.The invention relates to a method and an apparatus for producing a surface which can be printed in particular by means of an ink-jet printing method. The invention further relates to a paper web having a surface that can be printed in particular using an ink-jet printing method, and an article that can be printed in particular using an ink-jet printing method.

Tintenstrahl- bzw. Inkjet-Druckverfahren erlauben das Ausbilden fast beliebiger Muster in, je nach Hardware- und Softwareausrüstung, hoher Qualität und genau vorbestimmter Ausrichtung zu einer zu bedruckenden Oberfläche. Die Muster, die beispielsweise das Aussehen von Edelholzoberflächen haben, können durch Einscannen von einer Vorlage oder synthetisch mit Graphikprogrammen erzeugt werden. Kontrastierung, Färbung, Größe usw. der Muster können mit Hilfe an sich bekannter elektronischer Datenverarbeitungsverfahren variiert und an die jeweilige Oberfläche angepasst werden.Ink-jet or inkjet printing methods allow the formation of almost any pattern in, depending on the hardware and software equipment, high quality and precisely predetermined orientation to a surface to be printed. For example, the patterns that have the look of precious wood surfaces can be created by scanning from a master or synthetically with graphics programs. Contrast, color, size, etc. of the patterns can be varied by means of known electronic data processing methods and adapted to the respective surface.

Für die optische Qualität der Muster, die auch als eine homogene Einfärbung ausgebildet sein können, ist die Art und Qualität der zu bedruckenden Oberfläche maßgeblich. So ist beispielsweise bekannt, Platten oder Tafeln oder sonstige Gegenstände aus preiswerten unter Verwendung von Harzen oder sonstigen Bindemitteln verfestigter Presswerkstoffe, wie Faser- oder Partikelwerkstoffen, herzustellen und, gegebenenfalls nach einem Schleifvorgang, mit einem Primer zu versehen und dann zu bedrucken. Weiter ist bekannt, Oberflächen solcher preiswerter Grundkörper mit Folien, beispielsweise Kunstharzfolien, oder vollständig harzdurchtränkten Papieren zu kaschieren und zu bedrucken. Für eine befriedigende Druckqualität ist es wegen der nicht oder nur schlecht benetzbaren kunststoffhaltigen Oberflächen zweckmäßig, diese kunststoffhaltige Oberfläche vor dem Bedrucken mit einem Primer zu versehen oder aufzurauen, so dass die Färbeflüssigkeit einwandfrei haftet.For the optical quality of the pattern, which can also be designed as a homogeneous coloration, the type and quality of the surface to be printed is relevant. Thus, it is known, for example, plates or sheets or other items from inexpensive using hardened resins or other binders solidified press materials, such as fiber or particle materials to produce and, optionally after a grinding process to provide a primer and then to print. It is also known to laminate surfaces of such inexpensive basic body with films, such as synthetic resin films, or completely resin-impregnated papers and printed. For a satisfactory print quality, it is expedient to provide this plastic-containing surface before printing with a primer or roughen due to the not or only poorly wettable plastic-containing surfaces, so that the dyeing liquid adheres properly.

Aus der DE 197 15 268 A1 ist eine Dünnschichtfolie aus einem Rohpapier mit Pigmentstrich auf der Druckseite des Rohpapiers bekannt, die ausgehend von der dem Pigmentstrich gegenüberliegenden Seite des Rohpapiers mit einem Tränkharz imprägniert ist. Der Pigmentstrich bildet eine Sperrschicht für das Tränkharz, so dass das Tränkharz nicht bis zu der bedruckbaren Oberfläche vordrängen kann. Durch den Pigmentstrich werden die für die Qualität eines mit dem Tintenstrahldruckverfahren aufdruckbaren Musters maßgeblichen physikalischchemischen Eigenschaften der Rohpapieroberfläche beeinflusst, so dass die Bedruckbarkeit gegenüber einem unbehandelten Rohpapier verändert ist.From the DE 197 15 268 A1 is a thin film of a base paper with pigment coating on the printing side of the base paper is known, which is impregnated starting from the opposite side of the pigment sheet pigment with a impregnating resin. The pigment coating forms a barrier layer for the impregnating resin, so that the impregnating resin is not up to the printable Surface can push forward. The pigment coating influences the physico-chemical properties of the raw paper surface which are decisive for the quality of a printable pattern by the inkjet printing process, so that the printability is changed compared to an untreated base paper.

Aus der DE 199 55 081 C1 ist ein Basispapier für ein Aufzeichnungsmaterial für TintenstrahlDruckverfahren bekannt, das 5 bis 55 Gewichtsprozente eines Füllstoffes enthält, frei von Masseleimungsmitteln ist und mit einem Tränkharz imprägniert ist, wobei die Harzaufnahme aus dem Tränkharz so eingestellt ist, dass das Basispapier auf der Rückseite eine Flüssigkeitsaufnahme von höchstens 20 Gramm/m2 aufweist. Die Rückseite ist die der zu bedruckenden Seiten gegenüberliegende Seite. Das Harz kann von einer Seite her oder von beiden Seiten her aufgetragen werden. In jedem Fall ist die zu bedruckende Oberfläche mehr oder weniger stark mit Harz getränkt.From the DE 199 55 081 C1 A base paper for a recording material for ink-jet printing method is known which contains 5 to 55% by weight of a filler, is free of engine sizing agents and impregnated with an impregnating resin, wherein the resin absorption from the impregnating resin is adjusted so that the base paper on the back side has a liquid absorption of at most 20 grams / m 2 . The back side is the side opposite the sides to be printed. The resin can be applied from one side or from both sides. In any case, the surface to be printed is more or less impregnated with resin.

Der Erfindung liegt die Aufgabe zu Grunde, mit einem Tintenstrahldruckverfahren bedruckbare Gegenstände zu schaffen, wobei auf deren Oberflächen erzeugbare Muster insbesondere hinsichtlich des Aussehens höchste Qualitätserfordernisse erfüllen.The invention is based on the object to provide with an ink jet printing process printable objects, on the surfaces of which produce producible patterns, especially in terms of appearance highest quality requirements.

Eine erste Lösung dieser Aufgabe wird mit einem Verfahren gemäß dem Anspruch 1 erzielt.A first solution to this problem is achieved by a method according to claim 1.

Die Ansprüche 2 und 3 sind auf zwei vorteilhafte Durchführungsformen des erfindungsgemäßen Verfahrens gerichtet, mit denen erreicht wird, dass die bedruckende Seite der Papierbahn ganz oder zumindest weitgehend frei von Kunstharz bleibt.Claims 2 and 3 are directed to two advantageous embodiments of the method according to the invention, with which it is achieved that the printing side of the paper web remains wholly or at least substantially free of synthetic resin.

Mit den Merkmalen des Unteranspruchs 4 kann die zu bedruckende Seite der Papierbahn an jeweilige Erfordernisse angepasst werden.With the features of subclaim 4, the side of the paper web to be printed can be adapted to particular requirements.

Mit den Merkmalen des Anspruchs 5 wird Flexibilität bei der weiteren Verarbeitung der Papierbahn erzielt.With the features of claim 5 flexibility in the further processing of the paper web is achieved.

Die Ansprüche 6 bis 8 sind auf vorteilhafte Möglichkeiten gerichtet, wie eine erfindungsgemäße Papierbahn auf einen Grundkörper aufgebracht werden kann.Claims 6 to 8 are directed to advantageous ways in which a paper web according to the invention can be applied to a base body.

Die Ansprüche 9 und 10 kennzeichnen eine erfindungsgemäße Papierbahn.Claims 9 and 10 characterize a paper web according to the invention.

Der Anspruch 11 kennzeichnet einen mit einer erfindungsgemäßen Papierbahn versehenen bedruckbaren Gegenstand.Claim 11 indicates a printable article provided with a paper web according to the invention.

Der Anspruch 12 kennzeichnet eine Vorrichtung zum Durchführen eines erfindungsgemäßen Verfahrens.The claim 12 indicates a device for carrying out a method according to the invention.

Mit der Erfindung werden Oberflächen geschaffen, die hinsichtlich ihrer für das Bedrucken erforderlichen Eigenschaften konventionellen Papieroberflächen entsprechen, die durch die Auswahl des Papiers und der Färbeflüssigkeit sowie gegebenenfalls einer Vorbehandlung der zu bedruckenden Oberfläche jeweils in an sich bekannter Weise optimal an das erstrebte Druckergebnis angepasst sind. Somit erlaubt die Erfindung die unmittelbare Umsetzung der durch die elektronische Datenverarbeitung und die weit entwickelte Tintenstrahl- bzw. Inkjettechnik geschaffenen Möglichkeiten unmittelbar auf das Bedrucken von Gegenständen anzuwenden.The invention provides surfaces which correspond to conventional paper surfaces in terms of their properties required for printing, which are optimally adapted to the desired printing result in a manner known per se by the selection of the paper and the dyeing liquid and optionally a pretreatment of the surface to be printed. Thus, the invention allows the immediate implementation of the possibilities created by electronic data processing and the highly developed ink-jet or inkjet technology to be applied directly to the printing of objects.

Die Erfindung ist für weitgehend alle Arten von Rohpapieren geeignet, die eine Saugfähigkeit bzw. Kapillarität aufweisen. Es können auch gestrichene Papiere, Feinpapiere und Basispapiere verwendet werden. Das Flächengewicht liegt beispielsweise bei 30 bis 300 g/cm2. Es ist keine gesonderte Tubenaufnahmeschicht erforderlich.The invention is suitable for substantially all types of base papers having absorbency or capillarity. Coated papers, fine papers and base papers can also be used. The basis weight is, for example, 30 to 300 g / cm 2 . No separate tube receiving layer is required.

Die Oberschicht einer erfindungsgemäßen Papierbahn ist sowohl lackier- als auch laminierfähig. Die Harzschicht ist integraler Bestandteil der erfindungsgemäßen Papierbahn. Das Harz kann ein in der Papierindustrie übliches Tränkharz sein, beispielsweise aus der Gruppe der Diallylphtalate, Epoxidharze, Harnstoff-Formaldehyd-Harze, Harnsäure-Acetylsäureester-Copolyester, Melamin-Formaldehyd-Harze, Melamin-Phenol-Formaldehyd-Harze, Phenol-Formaldehyd-Harze, Poly(meth)acrylate oder ungesättigter Polyester-Harze.The top layer of a paper web according to the invention is both paintable and laminatable. The resin layer is an integral part of the paper web according to the invention. The resin can be a conventional impregnating resin in the paper industry, for example from the group of diallyl phthalates, epoxy resins, urea-formaldehyde resins, uric acid-acetyl ester copolyesters, melamine-formaldehyde resins, melamine-phenol-formaldehyde resins, phenol-formaldehyde resins. Resins, poly (meth) acrylates or unsaturated polyester resins.

Die Erfindung wird im Folgenden anhand schematischer Zeichnungen beispielsweise und mit weiteren Einzelheiten erläutert.The invention is explained below with reference to schematic drawings, for example, and with further details.

Es stellen dar:

Figur 1
eine schematische Querschnittsansicht durch eine einseitig mit Kunststoff getränkte Papierbahn,
Figur 2
eine schematische Schnittansicht eines erfindungsgemäßen mit einer Papierbahn versehenen, dann bedruckten und dann mit einer Schutzschicht versehenen Gegenstandes,
Figur 3
eine perspektivische schematische Ansicht einer Vorrichtung zum einseitigen Beschichten einer Papierbahn,
Figuren 4 und 5
Darstellungen zur Verdeutlichung unterschiedlicher Kaschierungsmöglichkeiten von Grundkörpern,
Figuren 6 und 7
schematisch eine Vorrichtung zum zweiseitigen Tränken einer Papierbahn mit Flüssigkeiten,
Fig. 8
verschiedene Möglichkeiten zum Aufbringen einer Papierbahn auf einen Grundkörper,
Fig. 9
unterschiedlich konkavierte Grundkörper mit aufgebrachten Papierbahnen und
Fig. 10
unterschiedlich bewegbare Druckköpfe zum Bedrucken von Gegenständen.
They show:
FIG. 1
a schematic cross-sectional view through a one side impregnated with plastic paper web,
FIG. 2
a schematic sectional view of an inventive provided with a paper web, then printed and then provided with a protective layer object,
FIG. 3
a perspective schematic view of an apparatus for one-sided coating of a paper web,
FIGS. 4 and 5
Representations to illustrate different possibilities of lamination of basic bodies,
FIGS. 6 and 7
schematically a device for two-sided impregnation of a paper web with liquids,
Fig. 8
various possibilities for applying a paper web to a base body,
Fig. 9
differently concaved body with applied paper webs and
Fig. 10
differently movable printheads for printing on objects.

In Figur 1 ist mit 10 ein Ausschnitt einer Papierbahn bezeichnet, beispielsweise eines handelsüblichen Papierblattes mit vorwiegend Holzzellulosefasern und hohem Weißpigmentanteil und einer Flächendichte zwischen etwa 50 und 90g/m2. Die Papierbahn 10 ist einfach kalandert, so dass ihre Faserstruktur zu den Oberflächen hin eine Offenporigkeit bzw. Saugfähigkeit aufweist, wie durch die schrägen parallelen Linien schematisch angedeutet. Es versteht sich, dass die Poren bzw. Mikrokanäle nur schematisch gezeichnet sind und tatsächlich entsprechend der ungeordneten Faserstruktur der Papierbahn 10 ebenfalls unausgerichtet sind. Im linken Bereich der Figur 1 ist die Papierbahn 10 im Rohzustand, während sie im rechten Bereich an ihrer Unterseite 12 mit einem Kunstharz getränkt ist, beispielsweise einem handelsüblichen Melaminharz, das in an sich bekannter Weise zunächst dünnflüssig ist und insbesondere unter Wärme aushärtet. Die Menge des auf die Unterseite 12 aufgebrachten Melaminharzes 14, seine Viskosität, das Flächengewicht, die Faserart, die Fasergröße sowie der Bindemittelart des Papierblattes (10), seine Dicke und Porosität und die Temperatur sind derart aufeinander abgestimmt, dass das Melaminharz 14 die Papierbahn 10 von der Unterseite 12 zur Oberseite 16 nicht vollständig durchtränkt bzw. durchdringt, sondern der an die Oberseite 16 angrenzende Bereich der Papierbahn 10 ganz oder zumindest im Wesentlichen frei von Melaminharz (durch schwarze Punkte angedeutet) bleibt und die Saugfähigkeit seines Rohzustandes unverändert behält.In FIG. 1, 10 denotes a section of a paper web, for example a commercial paper sheet with predominantly wood cellulose fibers and a high proportion of white pigment, and a surface density of between about 50 and 90 g / m 2 . The paper web 10 is simply calendered so that its fiber structure has an open porosity or absorbency toward the surfaces, as indicated schematically by the oblique parallel lines. It is understood that the pores or microchannels are drawn only schematically and are in fact also unaligned according to the disordered fiber structure of the paper web 10. In the left-hand portion of FIG. 1, the paper web 10 is in the raw state, while in the right-hand region it is impregnated on its underside 12 with a synthetic resin, for example a commercially available melamine resin. the first in a known manner is thin and cures, especially under heat. The amount of melamine resin 14 applied to the underside 12, its viscosity, basis weight, fiber type, fiber size and binder type (10), its thickness and porosity, and temperature are matched to one another such that the melamine resin 14 is the paper web 10 from the bottom 12 to the top 16 is not completely saturated or penetrated, but the adjacent to the top 16 portion of the paper web 10 wholly or at least substantially free of melamine resin (indicated by black dots) remains and the absorbency of its raw state remains unchanged.

Figur 2 zeigt ein Beispiel, wie die Unterseite 12 der Papierbahn 10 beschichtet werden kann. Eine drehbare Walze 18 taucht in flüssiges Melaminharz 14 ein, das in einem Behälter 20 aufgenommen ist. Die Papierbahn 10, aus der gegebenenfalls später Zuschnitte geschnitten werden, wird über die Oberfläche der mit Melaminharz benetzten Walze 18 geführt und dadurch beschichtet. Die Menge an auf die Unterseite der Papierbahn 10 aufgebrachten Melaminharzes hängt von den Prozessparametern ab, wie Viskosität des Melaminharzes, Eintauchtiefe der Walze 18, Oberflächenbeschaffenheit der Walze 18, Durchmesser der Walze 18, Anpressdruck zwischen der Papierbahn 10 und der Walze 18, Transportgeschwindigkeit der Papierbahn usw.FIG. 2 shows an example of how the underside 12 of the paper web 10 can be coated. A rotatable roller 18 is immersed in liquid melamine resin 14 received in a container 20. The paper web 10, from which optional later cuts are cut, is guided over the surface of the roll 18 wetted with melamine resin and thereby coated. The amount of melamine resin applied to the underside of the paper web 10 depends on the process parameters, such as viscosity of the melamine resin, immersion depth of the roll 18, surface finish of the roll 18, diameter of the roll 18, contact pressure between the paper web 10 and the roll 18, transport speed of the paper web etc.

Figur 3 zeigt schematisch, wie die im rechten Abschnitt der Figur 1 dargestellte, unterseitig mit Melaminharz 14 beschichtete Papierbahn verwendet werden kann, um einen Gegenstand herzustellen, dessen Oberfläche mit einem hoch qualitativen Muster bedruckt werden kann. Die Figur 3 ist von links nach rechts in drei Abschnitte a), b) und c) unterteilt.FIG. 3 shows schematically how the paper web coated with melamine resin 14 on the lower side of FIG. 1 can be used to produce an article whose surface can be printed with a high quality pattern. FIG. 3 is divided from left to right into three sections a), b) and c).

Der Abschnitt a) zeigt einen Ausschnitt eines Grundkörpers 22, auf den die Papierbahn 10 auflaminiert ist, indem die mit Melaminharz beschichtete Unterseite 12 der Papierbahn 10 auf die Oberseite des Grundkörpers 20 aufgepresst und erwärmt wird, so dass das ausgehärtete Melaminharz 14 eine sichere Haftung zwischen dem Grundkörper 20, der beispielsweise ein Pressfaserkörper ist, und der Papierbahn 10 herbeiführt. Im dargestellten Beispiel weist der Grundkörper 22 eine vor dem Auflaminieren der Papierbahn 10 aufgebrachte Beschichtung 24, beispielsweise aus Kunstharz, auf, um seine Oberfläche zu härten und zu vergüten.The section a) shows a section of a base body 22, on which the paper web 10 is laminated by the melamine resin coated bottom 12 of the paper web 10 is pressed and heated to the top of the base body 20, so that the cured melamine resin 14 a secure adhesion between the base body 20, which is for example a press fiber body, and the paper web 10 causes. In the example shown, the base body 22 has a coating 24, for example made of synthetic resin, applied prior to lamination of the paper web 10 in order to harden and temper its surface.

Auf die freie Oberseite 16 der Papierbahn 10, die durch die Beschichtung der Unterseite 12 mit Melaminharz nicht oder kaum verändert ist, kann unter Nutzung herkömmlicher Drucktechnik und Datenverarbeitung beispielsweise in einem Tintenstrahldruckverfahren ein Muster in hoch qualitativer Weise gedruckt werden, wie durch die Farbschicht 26 angedeutet (Abschnitt b)), die vor dem Trocknen bevorzugt teilweise von der Papierbahn 10 aufgesaugt wird und dadurch sehr gut an der Papierbahn haftet. Die Färbeflüssigkeit und die Porosität bzw. Oberfläche der Papierbahn sind aufeinander abgestimmt, so dass der Farbverlauf der erwünschten Musterqualität entspricht.On the free top 16 of the paper web 10, which is not or hardly changed by the coating of the underside 12 with melamine resin, can, using conventional printing technology and data processing, for example, in an ink jet printing process, a pattern is printed in a high quality manner as indicated by the ink layer 26 (section b)), which is preferably partially absorbed by the paper web 10 prior to drying and thereby adheres very well to the paper web. The dyeing liquid and the porosity or surface of the paper web are matched to one another so that the color gradient corresponds to the desired pattern quality.

Im Abschnitt c) der Figur 3 ist der mit der Papierbahn 10 kaschierte, mit der Farbschicht 26 bedruckte Grundkörper 22 mit einer zusätzlichen Schutzschicht 28 beschichtet dargestellt. Diese Schutzschicht 28, die durch ein Strahl- bzw. Spritzverfahren, ein Walzverfahren oder sonstwie aufgebracht werden kann, dient beispielsweise zum Schutz der Farbschicht 26 vor UV-Strahlung und zum Schutz vor mechanischen Beschädigungen. Die Schutzschicht 28, die transparent sein kann, ist in an sich bekannter Weise eine Kunstharzschicht aus sehr hartem, widerstandfähigem Kunststoff, in die vorteilhafterweise sehr harte Partikel eingelagert sind.In section c) of FIG. 3, the base body 22 laminated with the paper web 10 and printed with the ink layer 26 is shown coated with an additional protective layer 28. This protective layer 28, which can be applied by a blasting or spraying process, a rolling process or otherwise, serves, for example, to protect the ink layer 26 from UV radiation and to protect it against mechanical damage. The protective layer 28, which may be transparent, is in a conventional manner a synthetic resin layer of very hard, resistant plastic, in which advantageously very hard particles are incorporated.

Figur 4 verdeutlicht die Herstellung eines vollständig mit einem Papier 30 umhüllten Grundkörpers 22. Der Grundkörper 22, in dargestelltem Beispiel in Form einer Platte, ist auf das Maß des herzustellenden fertigen Gegenstandes fertig bearbeitet und wird mit einem entsprechend den Maßen des Grundkörpers 22 dimensionierten Zuschnitt des Papiers 30 vollständig kaschiert. Das Papier 30 kann vor dem Aufbringen auf den Grundkörper 22 an seiner dem Grundkörper 22 zugeordneten Innenseite mit Melaminharz getränkt sein und wird dann durch Anwendung von Druck und Wärme ausgehärtet und am Grundkörper 22 befestigt. Alternativ kann auf die Oberfläche des Grundkörpers 22 vor dem Aufbringen des Papiers 30 eine Schicht aus noch flüssigem Melaminharz aufgebracht werden, die derart bemessen ist, dass das Melaminharz das Papier nicht vollständig durchtränkt, wie anhand Figur 1 erläutert.FIG. 4 illustrates the production of a base body 22 completely enveloped by a paper 30. The base body 22, in the form of a plate in the example shown, is finished to the size of the finished article to be produced and is finished with a blank of the size of the base body 22 Paper 30 completely laminated. The paper 30 may be soaked before being applied to the base body 22 at its the inner body 22 associated with inner side melamine resin and is then cured by application of pressure and heat and attached to the base body 22. Alternatively, a layer of still liquid melamine resin, which is dimensioned such that the melamine resin does not completely impregnate the paper, as explained with reference to FIG. 1, can be applied to the surface of the base body 22 before the application of the paper 30.

Figur 5 zeigt einen ebenfalls plattenförmigen Grundkörper 22, dessen Ober- und Unterseite mit jeweils einem Papierblatt 30 kaschiert bzw. laminiert wird, wobei die Papierblätter 30 jeweils vor oder beim Aufbringen auf den Grundkörper 22 mit Harz, wie anhand Figur 1 erläutert, teilweise durchtränkt werden. Auf die gemäß Figur 5 rechte Stirnseite des Grundkörpers 22 kann ein weiteres entsprechend zugeschnittenes Papierblatt 30 unmittelbar aufgebracht werden. Alternativ kann auf die Stirnseite eine im Querschnitt rechteckige oder abgerundete Randkante 32 aufgeklebt oder auflaminiert werden, auf die dann das Papierblatt 30 aufgebracht wird. Die Papierblätter 30 sind entweder vor ihrem Aufbringen einseitig mit Harz getränkt oder die Oberfläche, auf die die Papierblätter aufgebracht werden, wird vor deren Aufbringen mit Harz beschichtet, so dass eine Durchdringung gemäß Figur 1 gegeben ist. Es versteht sich, dass bei dem Gegenstand gemäß Figur 5 ähnlich wie in Figur 4 ein Papierzuschnitt verwendet werden kann, mit dem der Grundkörper einschließlich der Randkante(n) insgesamt kaschiert werden kann.Figure 5 shows a likewise plate-shaped base body 22, the upper and lower sides are laminated or laminated with a paper sheet 30, wherein the paper sheets 30 each before or during application to the base body 22 with resin, as explained with reference to Figure 1, partially soaked , On the right according to Figure 5 end face of the main body 22, another appropriately cut paper sheet 30 can be applied directly. Alternatively, a marginal edge 32, which is rectangular or rounded in cross-section, may be glued or laminated onto the end face, onto which the paper sheet 30 is then applied. The Paper sheets 30 are either impregnated on one side with resin prior to their application or the surface to which the paper sheets are applied is coated with resin prior to their application, so that a penetration according to FIG. 1 is provided. It is understood that in the article according to FIG. 5, similar to FIG. 4, a paper blank can be used with which the main body, including the marginal edge (s), can be laminated as a whole.

Die mit dem Papier kaschierten Grundkörper gemäß Figuren 4 und 5 können anschließend in an sich bekannter Weise nach einem Tintenstrahldruckverfahren oder auch nach einem anderen Verfahren bedruckt werden, wobei dies wegen der im saugfähigen Zustand vorliegenden Papieroberfläche ein ausgezeichnetes Muster ergibt. Der bedruckte Gegenstand kann anschließend mit einer Schutzschicht 28 gemäß Figur 3 versehen werden.The base bodies according to FIGS. 4 and 5 laminated with the paper can subsequently be printed in a manner known per se by an ink-jet printing process or else by another process, this resulting in an excellent pattern because of the paper surface present in the absorbent state. The printed article can then be provided with a protective layer 28 according to FIG.

Wie sich aus dem Vorstehenden ergibt, hat die einseitig durchtränkte Papierschicht eine Doppelfunktion; einerseits bildet das Papier durch die Harzimprägnierung seiner Unterseite eine Kaschierung, Härtung und gegebenenfalls Qualitätsverbesserung der Oberfläche des aus einem preiswerten Werkstoff bestehenden Grundkörpers, und zum anderen übernimmt die nicht harzgetränkte Oberseite des Papiers die Funktion eines Adapters oder Primers für das Druckverfahren, insbesondere das Inkjet-Verfahren.As can be seen from the above, the one-sided soaked paper layer has a dual function; On the one hand, the paper forms a lamination, hardening and, if necessary, quality improvement of the surface of the base body consisting of a low-cost material by the resin impregnation of its underside, and on the other hand, the non-resin-impregnated upper side of the paper assumes the function of an adapter or primer for the printing process, in particular the inkjet coating. Method.

Der Grundkörper, der jedwelche für die Kaschierung mit Papier geeignete Form aufweisen kann, kann aus Holzwerkstoffen, Kunststoffen, Faser- und/oder Partikelmaterialien und auch metallischen Werkstoffen bestehen. Die Dicke, Dichte und weitere Zusammensetzung des Papiers richtet sich nach den Anforderungen sowohl der Kaschierung als auch des Druckverfahrens. Als das Papier verdichtendes Harz kann jedwelches Harz verwendet werden, dass insbesondere unter Wärme aushärtet. Das Aufbringen des mit Harz getränkten Papiers kann auch nach Aushärten des Harzes erfolgen, indem die einseitig beharzte Papierschicht auf den Grundkörper aufgeklebt oder sonst wie auflaminiert wird.The basic body, which may have any form suitable for lamination with paper, may consist of wood materials, plastics, fiber and / or particulate materials and also metallic materials. The thickness, density and further composition of the paper depends on the requirements of both the lamination and the printing process. As the paper compacting resin, any resin which cures especially under heat can be used. The application of the resin-impregnated paper can also be done after curing of the resin by the one-sided resinated paper layer is glued or otherwise laminated on the base body.

Im Folgenden werden Abwandlungen und Weiterbildungen der bisher beschriebenen Erfindung erläutert:

  • Fig. 6 zeigt eine Vorrichtung, mit der eine Papierbahn von beiden Seiten her mit Flüssigkeit beschichtet werden kann. Dazu weist die Vorrichtung zwei Flüssigkeitsaufbringeinrichtungen 34 und 36 auf, die in gegenseitigem Abstand angeordnet sind. Jede der Flüssigkeitsaufbringeinrichtungen enthält eine Aufbringwalze 38, die drehangetrieben ist und in Anlage an der Ober- bzw. Unterseite einer sich zwischen den Aufbringwalzen hindurchbewegenden Papierbahn 10 ist. Jede der Aufbringwalzen 38 ist in Anlage an einer Beschickungswalze 40, mit der auf den Außenumfang der Auftragswalze Flüssigkeit aus einem Vorratstank 42 aufgebracht wird.
In the following, modifications and developments of the invention described so far are explained:
  • Fig. 6 shows a device with which a paper web can be coated from both sides with liquid. For this purpose, the device has two Flüssigkeitsaufbringeinrichtungen 34 and 36, which are arranged at a mutual distance. Each of the liquid applicators includes an applicator roll 38 which is rotationally driven and in abutment with the top and bottom surfaces, respectively, of a paper web 10 passing between the applicator rolls. Each of the application rollers 38 is in contact with a feed roller 40, with the liquid on the outer circumference of the applicator roll from a storage tank 42 is applied.

In dem gemäß Fig. 6 unteren Vorratstank befindet sich flüssiges Kunstharz 44. In dem oberen Vorratstank befindet sich Wasser 46. Die Fasern der Papierbahn 10 sind im dargestellten Beispiel nicht ausgerichtet, könnten aber auch gerichtet sein. Die Drehzahlen der Aufbringwalzen 38 sind vorteilhafterweise derart, dass die zwischen ihnen hindurchtransportierte Papierbahn 10 nicht direkt bzw. auf Scherung beansprucht wird.In the lower storage tank according to FIG. 6, there is liquid synthetic resin 44. Water 46 is located in the upper storage tank. The fibers of the paper web 10 are not aligned in the example shown, but could also be directed. The rotational speeds of the application rollers 38 are advantageously such that the paper web 10 transported between them is not stressed directly or in shear.

Wie dargestellt, dringt von der Unterseite her flüssiges Kunstharz 44 in die Papierbahn ein. Von der Oberseite her dringt Wasser 46 in die Papierbahn ein. Die Papierbahn bildet eine Kapillarstruktur, die das flüssige Kunstharz und. das Wasser einsaugt. Die beiden Flüssigkeiten sind nicht ineinander löslich und durchdringen sich daher nicht, so dass die obere Flüssigkeit in gewisser Weise eine Sperrschicht für die untere Flüssigkeit und umgekehrt bildet. Das Kunstharz 44 dringt somit nicht bis an die Oberseite der Papierwand 10 vor.As shown, liquid resin 44 penetrates from the bottom into the paper web. From the top water 46 penetrates into the paper web. The paper web forms a capillary structure containing the liquid synthetic resin and. sucking in the water. The two liquids are not soluble in each other and therefore do not penetrate each other, so that the upper liquid forms in some way a barrier layer for the lower liquid and vice versa. The synthetic resin 44 thus does not penetrate to the top of the paper wall 10.

Wenn das Wasser 46 anschließend verdampft wird (Fig. 7), wobei diese Verdampfung durch eine Heizeinrichtung 48 unterstützt werden kann, steht die Oberfläche des Papiers 10 frei von Kunstharz und unverändert für ein Bedrucken zur Verfügung.When the water 46 is subsequently evaporated (Figure 7), which evaporation can be assisted by a heater 48, the surface of the paper 10 is free of synthetic resin and unaltered for printing.

Dem Wasser 42 können Füllstoffe, Farbstoffe, Farbpigmente oder auch Korund beigegeben werden, so dass auf die Oberseite der Papierbahn 10 eine wässrige Suspension aufgebracht wird, deren Feststoffe nach dem Verdampfen der Oberseite der Papierbahn verbleiben und diese, frei von dem Kunstharz 44, für eine nachfolgende beispielsweise Tintenstrahlbedruckung entsprechend den jeweiligen Anforderungen optimal vorbereiten.The water 42 fillers, dyes, pigments or corundum can be added, so that an aqueous suspension is applied to the top of the paper web 10, the solids remain after evaporation of the top of the paper web and these, free of the resin 44, for a prepare the following, for example, inkjet printing optimally in accordance with the respective requirements.

Als Sperrflüssigkeit können auch andere Flüssigkeiten verwendet werden, die sich mit dem Kunstharz nicht mischen.As a barrier liquid and other liquids can be used which do not mix with the resin.

Die zumindest weitgehende harzfreie Oberseite bzw. der zumindest weitgehend harzfreie obere Bereich der Papierbahn 10 gemäß der rechten Hälfte der Fig. 1 oder der Fig. 7, in dem die Fasern der Papierbahn je nach Struktur und Aufbau des Papiers mehr oder weniger stark ausgerichtet freiliegen, bildet einerseits eine Verankerungsschicht für ein in einem nachfolgenden Schritt aufgebracht ist, von oben her in die Papierbahn eindringendes Laminierharz und ebenfalls eine Verankerungsschicht für einen Lack, der auf der Oberseite der Papierschicht aufgetragen wird und in diese eindringt. Die Verankerungsschicht ist deshalb besonders stabil, weil, wie aus Fig. 1 und Fig. 7 ersichtlich, Papierfasern in das Kunstharz 14 bzw. 44 einragen und nach dessen Trocknung in ihrer Lage stabilisiert sind und gegebenenfalls zusätzlich längs ihrer Länge durch geringe Mengen des getrockneten Kunstharzes stabilisiert sind.The at least largely resin-free upper side or the at least largely resin-free upper region of the paper web 10 according to the right half of FIG. 1 or FIG. 7, in which the fibers of the paper web are exposed more or less aligned depending on the structure and structure of the paper, forms on the one hand an anchoring layer for a is applied in a subsequent step, from above into the paper web penetrating lamination and also an anchoring layer for a paint, which is applied to the top of the paper layer and penetrates into it. The anchoring layer is particularly stable because, as shown in Fig. 1 and Fig. 7, paper fibers protrude into the resin 14 and 44 and are stabilized after drying in their position and optionally additionally along their length by small amounts of the dried resin are stabilized.

Das Kunstharz 44 kann je nach Anforderungen unterschiedlichster Art sein. Wenn die Papierbahn 10 auf einen Grundkörper 22 (Fig. 5) mit ebener Oberfläche aufkaschiert werden soll, beispielsweise durch Aufpressen und dazwischen Anordnung einer Kleberschicht, kann das Kunstharz duroplastisch sein, d.h. nach dem Aushärten durch Erwärmen nicht mehr verflüssigbar oder erweichbar sein. Wenn die Papierbahn beim Aufbringen auf den Grundkörper gebogen werden muss, ist das Kunstharz vorteilhafter Weise thermoplastisch, so dass es beim Aufkaschieren der Papierbahn auf die Oberfläche eines Grundkörpers unter Erwärmung erweicht. Wenn die Oberfläche des Grundkörpers 22 derart ist, dass die Papierbahn, um sich dreidimensionalen Oberflächenstrukturen anzupassen, gedehnt werden muss, ist die Papierbahn dehnfähig, indem sie beispielsweise eine Struktur mit noch nicht ausgerichteten Fasern hat, die in ihrer Ausrichtung oder in ihrer Länge verändert werden können.The resin 44 may be different depending on the requirements. If the paper web 10 is to be laminated onto a flat-faced base 22 (Figure 5), for example, by pressing and placing an adhesive layer therebetween, the resin may be thermoset, i. after curing by heating no longer be liquefiable or softenable. If the paper web has to be bent when applied to the base body, the synthetic resin is advantageously thermoplastic, so that it softens when the paper web is laminated onto the surface of a base body under heating. If the surface of the main body 22 is such that the paper web must be stretched to conform to three-dimensional surface structures, the paper web is stretchable, for example, having a structure with unoriented fibers that are changed in orientation or in length can.

Eine weitere Möglichkeit des Aufbringens der Papierbahn auf einen Grundkörper besteht darin, dass die Oberfläche des Grundkörpers mit einem in ausgehärtetem Zustand auf ihr haftenden Kunstharz beschichtet wird und die Papierbahn auf den mit Kunstharz beschichteten Grundkörper aufgewalzt wird, wobei die die Papierbahn auf den Grundkörper unter Druck aufpressende Walze die Aufbringwalze 38 der Flüssigkeitsaufbringeinrichtung 34 (Fig. 6) sein kann. Auf diese Weise wird das anhand der Figuren 6 und 7 geschilderte Verfahren gleichzeitig mit dem Aufbringen der Papierbahn auf den Grundkörper durchgeführt.A further possibility of applying the paper web to a base body is that the surface of the base body is coated with a resin cured in its cured state and the paper web is rolled onto the resin-coated base body, wherein the paper web on the body under pressure pressing roll 38 may be the applicator roll 38 of the liquid applicator 34 (Figure 6). In this way, the method described with reference to FIGS. 6 and 7 is carried out simultaneously with the application of the paper web to the base body.

Es sei darauf hingewiesen, dass insbesondere bei plattenförmigen Grundkörpern, auf deren Oberseite eine Papierbahn aufkaschiert wird, auf die Unterseite eine als Zuganker wirkende Schicht aufkaschiert, beispielsweise aufgeklebt, wird, damit sich der fertige Gegenstand infolge von von der Papierschicht her beispielsweise bei deren Bedrucken oder deren weiterer Oberflächenbehandlung (Aufbringen eines Schutzlackes) entstehenden Spannungen nicht verzieht.It should be noted that in particular in plate-shaped bodies, on top of which a paper web is laminated on the underside of an acting as a tie rod layer laminated, for example, is glued, so that the finished object as a result of the paper layer ago, for example, in their printing or whose further surface treatment (application of a protective varnish) does not distort the resulting stresses.

Das Bedrucken der Papierschicht kann vor deren Aufbringen auf einen Grundkörper oder nach deren Aufbringen auf einen Grundkörper erfolgen. Ebenso kann eine Schutzschicht auf die Bedruckungsschicht bereits vor dem Aufbringen der Papierbahn auf den Grundkörper oder erst nach dem Aufbringen erfolgen.The printing of the paper layer can be carried out prior to its application to a base body or after its application to a base body. Likewise, a protective layer can be applied to the printing layer even before the application of the paper web to the base body or only after the application.

Fig. 8 verdeutlicht in den Figurenteilen A, B, C drei unterschiedliche Möglichkeiten, wie eine erfindungsgemäß von einer Seite her mit Kunstharz getränkte Papierbahn auf einen Grundkörper aufgebracht werden kann, wobei das Aufbringen durch Aufwalzen, in einer Form und/oder durch ein Vakuumverfahren erfolgen kann.Fig. 8 illustrates in the figure parts A, B, C, three different ways in which a inventively impregnated according to the invention from one side with resin impregnated paper web can be applied to a body, wherein the application by rolling, in a form and / or by a vacuum process can.

Gemäß Fig. 8A wird eine von ihrer Unterseite her mit Kunstharz getränkte und gegebenenfalls bereits bedruckte Papierbahn 101 mit einer weiteren Harz- bzw. Kleberschicht 50 versehen, und auf den Grundkörper 22 aufgebracht. Die Kleberschicht 50 vermittelt die Haftung zwischen dem Grundkörper und der mit Harz getränkten Unterseite der Papierbahn.According to FIG. 8A, a paper web 10 1 impregnated with synthetic resin and possibly already printed from its underside is provided with a further resin or adhesive layer 50, and applied to the base body 22. The adhesive layer 50 imparts adhesion between the base body and the resin-impregnated underside of the paper web.

Gemäß Fig. 8B ist die Unterseite der Papierbahn 102 mit einer teilweise in die Papierbahn 102 eingedrungenen Harzschicht 52 versehen, die beim Aufpressen der Papierbahn 102 auf den Grundkörper 22 auch die Haftung übernimmt.According to FIG. 8B, the underside of the paper web 10 2 is provided with a resin layer 52 which has penetrated partially into the paper web 10 2 and which also assumes the liability when the paper web 10 2 is pressed onto the base body 22.

Gemäß Fig. 8C wird auf den Grundkörper 22 eine Kleberschicht 54 aufgebracht, auf die anschließend die fertig vorbereitete Papierbahn 10 aufgebracht wird.According to FIG. 8C, an adhesive layer 54 is applied to the base body 22, onto which the finished paper web 10 is subsequently applied.

Bei den Verfahren gemäß Fig. 8A und C handelt es sich somit bezüglich des Aufbringens der Kleber- bzw. Kunstharzschicht um zweistufige Verfahren, während das Verfahren gemäß Fig. 8B einstufig ist.Thus, the processes of FIGS. 8A and C are two-stage processes with respect to the application of the adhesive or synthetic resin layer, while the process of FIG. 8B is one-stage.

Fig. 9 zeigt verschiedene Arten von Grundkörpern 22, auf die bereits bedruckte oder nicht bedruckte und lediglich zum Bedrucken vorbereitete Papierbahnen 10 aufgebracht sind.Fig. 9 shows various types of base bodies 22, on which already printed or not printed and prepared only for printing paper webs 10 are applied.

Der Grundkörper 22 gemäß Fig. 9A hat eine ebene Oberseite, auf die die Papierbahn 10 aufgebracht ist. Die Papierbahn 10 kann somit in sich steif sein.The main body 22 according to FIG. 9A has a flat upper side, on which the paper web 10 is applied. The paper web 10 may thus be stiff in itself.

Bei den Ausführungsformen gemäß Fig. 9 wird die Papierbahn 10 zumindest beim Aufbringen auf Biegung beansprucht, so dass sie teilweise durchdringendes Kunstharz ein Biegen der Papierbahn zulassen muss. Bei der obersten Ausführungsform der Fig. 9B sind zwei Grundkörper 22 über die Papierbahn 10 verbunden, so dass die Papierbahn 10 gegebenenfalls ein Filmscharnier bildet, für das sie durch entsprechende Konsistenz des Kunstharzes geeignet ist.In the embodiments according to FIG. 9, the paper web 10 is subjected to bending, at least when it is applied, so that it must permit a partial bending of the paper web. In the uppermost embodiment of FIG. 9B, two base bodies 22 are connected over the paper web 10, so that the paper web 10 optionally forms a film hinge, for which it is suitable by appropriate consistency of the synthetic resin.

Der Grundkörper 22 gemäß Fig. 9C hat eine dreidimensional gewölbte Oberfläche (seine Kontur ist in von Fig. 9C verschiedenen Schnittebenen unterschiedlich). Dazu ist die auf die Oberseite des Grundkörpers 22 aufkaschierte Papierbahn 101 zumindest während ihres Aufbringens durch entsprechende Konsistenz des Rohpapiers dehnbar und die Harzimprägnierung entsprechend weich, so dass sich die mit dem Harz teilweise durchtränkte Papierbahn beim Aufkaschieren ohne Falten- oder gar Rissbildung an die Oberfläche des Grundkörpers 22 anpasst. Die auf die gemäß der Figur rechten Seitenfläche aufgebrachte Papierbahn 102 kann verschieden von der Papierbahn 10, sein. Beide Papierbahnen können auch einteilig miteinander ausgebildet sein. Vorteilhaft ist jedoch, die Papierbahn 10, und 102 getrennt voneinander aufzubringen, indem beispielsweise zunächst die Papierbahn 10, auf die dreidimensionale Oberfläche des Grundkörpers 22 auflaminiert, verpresst oder sonst wie in einem Soften-Forming-Verfahren aufgebracht wird und anschließend der Rand der Papierbahn 101 mit Hilfe eines in die Ebene r ausgeführten Schnittes abgetrennt wird. Der Schnitt kann in der Pressform oder am Grundkörper angedeutet sein, so dass er anschließend sauber ausgeführt wird und die auf die Seitenflächen des Grundkörpers 22 aufgebrachte Papierbahn 102 sauber an die Papierbahn 101 anschließt. Auf diese Weise wird vermieden, dass die bei dreidimensionaler Aufbringung der Papierbahn 10, sich an überstehenden Bereichen bildenden Verwerfungen vermieden werden.The main body 22 according to FIG. 9C has a three-dimensionally curved surface (its contour is different in different sectional planes from FIG. 9C). For this purpose, the laminated to the top of the body 22 paper web 10 1 at least during their application by appropriate consistency of the base paper stretchable and the resin impregnation correspondingly soft, so that the partially impregnated with the resin paper web during lamination without wrinkles or even cracking on the surface of the base body 22 adapts. The paper web 10 2 applied to the right-hand side surface according to the figure may be different from the paper web 10. Both paper webs can also be integrally formed with each other. However, it is advantageous to apply the paper web 10, and 10 2 separately from one another by, for example, first compressing the paper web 10, onto the three-dimensional surface of the main body 22, pressing it or otherwise applying it as in a soft-molding process, and then the edge of the paper web 10 1 is separated by means of a running in the plane r cut. The cut can be indicated in the press mold or on the main body, so that it is subsequently carried out cleanly and the paper web 10 2 applied to the side surfaces of the main body 22 adjoins cleanly the paper web 10 1 . In this way it is avoided that the three-dimensional application of the paper web 10, forming at protruding areas distortions are avoided.

Fig. 10 zeigt in den unterschiedlichen Darstellungen unterschiedliche Möglichkeiten, wie ein mit einer Papierbahn 10 kaschierter Grundkörper 22 mit Hilfe eines Druckkopfes tintenstrahlbedruckt werden kann.Fig. 10 shows different ways in the different representations of how a laminated with a paper web 10 base body 22 by means of a print head can be inkjet printed.

Gemäß a) wird die ebene Oberseite des Gegenstandes mit einem Druckkopf 56 bedruckt, der in einer waagrechten Ebene bewegbar ist. Gemäß b) wird die senkrechte Seitenfläche des Gegenstandes mit einem Druckkopf 58 bedruckt, der in einer vertikalen Ebene bewegbar ist. Ein Gegenstand mit einer waagrechten und senkrechten Oberfläche gemäß c) wird mit beiden Druckköpfen 56 und 58 bedruckt.According to a), the flat upper side of the article is printed with a print head 56 which is movable in a horizontal plane. According to b), the vertical side surface of the article is printed with a print head 58, which is movable in a vertical plane. An article having a horizontal and vertical surface according to c) is printed with both printheads 56 and 58.

Ein Gegenstand, der weiche mit großen Radien ausgebildete Kanten hat, kann beispielsweise auf seiner ebenen Oberseite mit dem Druckkopf 56 bedruckt werden. Die Seitenfläche einschließlich der gewölbten Randbereiche werden mit einem Druckkopf 60 bedruckt, der um eine senkrecht auf der Zeichnungspapierebene stehende Achse schwenkbar und senkrecht bewegbar ist.For example, an article that has soft edges with large radii may be imprinted with the printhead 56 on its flat top surface. The side surface including the curved edge regions are printed with a print head 60 which is pivotally and vertically movable about an axis perpendicular to the drawing paper plane.

Bei der Ausführungsform gemäß Fig. 4e) ist der Druckkopf 62 um eine auf der Zeichnungspapierebene senkrecht stehende Achse schwenkbar und in waagrechter und senkrechter Richtung bewegbar.In the embodiment according to FIG. 4e), the print head 62 is pivotable about an axis perpendicular to the drawing paper plane and can be moved in a horizontal and vertical direction.

Bei der Ausführungsform gemäß Fig. 4f) bei der die Oberfläche des zu bedruckenden Gegenstandes dreidimensional gewölbt ist, wird ein Druckkopf 64 verwendet, der mittels eines Roboters um zwei senkrecht aufeinander stehende Achsen verschwenkbar und in der waagrechten und senkrechten bewegbar ist. Wenn die Oberfläche des Gegenstandes gemäß f) lediglich um senkrecht auf der Zeichnungsebene stehende Achsen gewölbte Bereiche aufweist, kann der Druckkopf 62 gemäß e) verwendet werden.In the embodiment according to FIG. 4f), in which the surface of the object to be printed is curved three-dimensionally, a print head 64 is used, which can be pivoted by means of a robot about two mutually perpendicular axes and in the horizontal and vertical. If the surface of the object according to f) has curved areas only around axes perpendicular to the plane of the drawing, the print head 62 according to e) can be used.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Papierbahnpaper web
1212
Unterseitebottom
1414
Melaminharzmelamine resin
1616
Oberseitetop
1818
Walzeroller
2020
Behältercontainer
2222
Grundkörperbody
2424
Beschichtungcoating
2626
Farbschichtcoat of paint
2828
Schutzschichtprotective layer
3030
Papierpaper
3232
Randkanteedge
3434
Flüssigkeitsaufbringeinrichtungliquid application
3636
Flüssigkeitsaufbringeinrichtungliquid application
3838
Aufbringwalzeapplicator
4040
Beschickungswalzefeed roller
4242
Vorratstankstorage tank
4444
Kunstharzresin
4646
Wasserwater
4848
Heizeinrichtungheater
5050
Kleberschichtadhesive layer
5252
Harzschichtresin layer
5454
Kleberschichtadhesive layer
5656
Druckkopfprinthead
5858
Druckkopfprinthead
6060
Druckkopfprinthead
6262
Druckkopfprinthead
6464
Druckkopfprinthead

Claims (12)

Verfahren zum Herstellen einer insbesondere mittels eines Tintenstrahldruckverfahrens bedruckbaren Oberfläche, bei welchem Verfahren eine längs ihrer gesamten Dicke für flüssiges Kunstharz saugfähige Papierbahn (10) von einer Seite her derart mit dem flüssigen Kunstharz (14; 44) getränkt wird, dass das Kunstharz die Papierbahn nicht vollständig durchdringt, so dass die andere Seite (16) der Papierbahn zumindest weitgehend frei von Kunstharz bleibt.A method for producing a surface which can be imprinted in particular by means of an ink-jet printing process, in which process a paper web (10) absorbent along its entire thickness for liquid synthetic resin is impregnated from one side with the liquid synthetic resin (14; 44) such that the synthetic resin does not impregnate the paper web completely penetrates, so that the other side (16) of the paper web remains at least largely free of synthetic resin. Verfahren nach Anspruch 1, wobei die Menge und/oder Viskosität und/oder Kapillarität und/oder Temperatur des flüssigen Kunstharzes (14; 44) derart gesteuert wird, dass es die Papierbahn (10) nicht vollständig durchdringt.The method of claim 1, wherein the amount and / or viscosity and / or capillarity and / or temperature of the liquid synthetic resin (14; 44) is controlled such that it does not completely penetrate the paper web (10). Verfahren nach Anspruch 1, wobei die Papierbahn (10) von einer Seite her mit flüssigem Kunstharz (44) und von der anderen Seite her mit einer in sie eindringenden Sperrflüssigkeit (46) getränkt wird, die in der Papierbahn eine Sperrschicht für das flüssige Kunstharz bildet und nach Härten des Kunstharzes verdampft wird.A method according to claim 1, wherein the paper web (10) is impregnated from one side with liquid synthetic resin (44) and from the other side with a barrier liquid (46) penetrating into it which forms a barrier layer for the liquid synthetic resin in the paper web and evaporated after curing of the resin. Verfahren nach Anspruch 3, wobei die Sperrflüssigkeit (46) wenigstens einen, beim Verdampfen in der Papierbahn zurückbleibenden Feststoff enthält.The method of claim 3, wherein the barrier liquid (46) contains at least one solid remaining in the paper web upon evaporation. Verfahren nach einem der Ansprüche 1 bis 4, wobei das Kunstharz (14; 44) thermoplastisch ist.A method according to any one of claims 1 to 4, wherein the synthetic resin (14; 44) is thermoplastic. Verfahren nach einem der Ansprüche 1 bis 5, wobei das von einer Seite her in die Papierbahn (10) eindringende flüssige Kunstharz auf einen Grundkörper aufgebracht wird, auf den die Papierbahn aufgebracht wird.Method according to one of claims 1 to 5, wherein the penetrating from one side into the paper web (10) liquid synthetic resin is applied to a base body on which the paper web is applied. Verfahren nach einem der Ansprüche 1 bis 5, wobei die nicht vollständig von Kunstharz durchdrungene Papierbahn (10) auf einen Grundkörper (22) aufgebracht wird.Method according to one of claims 1 to 5, wherein the not fully penetrated by synthetic resin paper web (10) is applied to a base body (22). Verfahren nach Anspruch 7, wobei auf den Grundkörper (22) vor dem Aufbringen der Papierbahn ein Kleber (54) aufgebracht wird.Method according to claim 7, wherein an adhesive (54) is applied to the base body (22) before the application of the paper web. Papierbahn mit einer insbesondere mittels eines Tintenstrahldruckverfahrens bedruckbaren Oberfläche, welche Papierbahn (10) an ihrer bedruckbaren Oberfläche (16) saugfähig für Kunstharz ist und an ihrer von der bedruckbaren Oberfläche abgewandten Seite mit Kunstharz getränkt ist, wobei das Kunstharz (14; 44) die Papierbahn nicht vollständig durchdringt, so dass die bedruckbare Oberfläche zumindest im Wesentlichen frei von Kunstharz ist.Paper web having a surface which can be printed in particular by means of an inkjet printing process, which paper web (10) is absorbent for synthetic resin on its printable surface (16) and impregnated with synthetic resin on its side facing away from the printable surface, the synthetic resin (14, 44) forming the paper web not completely penetrates, so that the printable surface is at least substantially free of synthetic resin. Papierbahn nach Anspruch 9, welche Papierbahn (10) eine dehnfähige Struktur aufweist.The paper web of claim 9, wherein said paper web (10) has a stretchable structure. Bedruckbarer Gegenstand, der zumindest teilweise mit einer Papierbahn nach Anspruch 9 oder 10 beschichtet ist.Printable article which is at least partially coated with a paper web according to claim 9 or 10. Vorrichtung zum Durchführen des Verfahrens nach Anspruch 3, enthaltend zwei in gegenseitigem Abstand angeordnete Flüssigkeitsaufbringeinrichtungen (34, 36), zwischen denen die Papierbahn (10) hindurchtransportiert wird, wobei mit der einen Flüssigkeitsaufbringeinrichtung auf die eine Seite der Papierbahn das flüssige Kunstharz (44) aufgebracht wird und mit der anderen Flüssigkeitsaufbringeinrichtung auf die andere Seite der Papierbahn die Sperrflüssigkeit (46) aufgebracht wird.Apparatus for carrying out the method according to claim 3, comprising two spaced-apart Flüssigkeitsaufbringeinrichtungen (34, 36), between which the paper web (10) is transported therethrough, wherein applied with the one liquid applicator on one side of the paper web, the liquid resin (44) and with the other liquid applicator on the other side of the paper web, the barrier liquid (46) is applied.
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DE102005036541B9 (en) 2010-02-11
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