DE102008008292A1 - Paper layer for producing a flat, printed or printable component - Google Patents

Abstract

The invention relates to a paper layer (1) for producing a flat, printed or printable component (5), in particular for floor, wall, ceiling and / or furniture applications, wherein the paper layer (1) before or after the printing process for applying a flat basic body (4) of the component (5) under pressure and / or heat influence is provided, the paper layer (1) having a fiber (6) having fiber structure (7) and wherein between the fibers (6) spaces (8) are provided. On the one hand to allow a sufficient through-cure and on the other hand to ensure a good printing result, the invention provides that at least on the upper side in the fiber structure (7) an ink receptive mass (9) is provided, the fibers (6) in the upper side region of the fiber structure (7). at least substantially sheathed, and that at the top (2) of the paper layer (1) open spaces (8) of the sheathed fiber structure (7) remain.

Description

The The invention relates to a paper layer for producing a flat, printed or printable component, in particular for Floor, wall, ceiling and / or furniture applications, wherein the paper layer before or after printing for application on a flat body of the component below Pressure and / or heat influence is provided, the Paper layer has a fiber structure having fibers and wherein intermediate spaces are provided between the fibers.

Furthermore The present invention relates to a flat, printed or printable component with a paper layer of the aforementioned Art and a method for producing such a component.

paper layers for producing flat, printed or printable Components for floor, wall, ceiling or furniture applications are known from practice. In a known printing paper is on the fiber structure of the actual paper layer, a color receiving layer applied. Investigations conducted by the applicant have revealed that the particles of the ink-receiving layer average of a few microns. The ink-receiving layer, having as main constituents silica and titania, is applied over the entire surface of the top of the paper structure and lies on this, the paper structure completely over- and covering up. In the case of the applicant Investigations have found that the ink receiving layer Although superficially engages the fiber structure, however is arranged substantially above the fiber structure and the fibers and the interstices between the fibers covered and covered and thus closes. Ultimately results in the known paper is a substantially closed uniform surface, resulting in a very good printing results.

From The Applicant has then further found that not insignificant problems with that for further processing of the paper necessary. Will the well-known paper after being printed from above, it has been determined that a sufficient and full-surface Durchbeharzung of the paper can not be guaranteed. The episode is that the paper after pressing with the component not sufficiently connects.

To solve the above problem in the known paper, the applicant has then tried to inset the paper from below, as is fundamentally understood from the EP 1 749 676 A1 is known. This publication relates to a method and an apparatus for producing a paper web which can be printed by means of an ink-jet printing process and which is subsequently applied to plates or sheets. The aim is to provide an ink jet printing method, wherein the print result on the surface of the objects to be printed corresponds to the highest quality requirements in terms of appearance. For this purpose, it is provided that an absorbent along its entire thickness for liquid resin paper web is soaked from the bottom with liquid resin so that the resin does not completely penetrate the paper web, so that the other side of the paper web is at least substantially free of synthetic resin. In the end, the one from the EP 1 749 676 A1 known paper web on an upper side, substantially resin-free area, which accounts for about 50% of the thickness of the paper web. However, it has been found in experiments that when pressing the underside-resinated paper web with a component arranged on the underside and a protective layer provided on the top, although a sufficient connection of the paper web results to the component, but not from the protective layer to the paper web.

task The present invention is a paper layer of the above to provide the above-mentioned type, on the one hand a very good print result is possible and on the other hand a good connection to the main body of a component and optionally is ensured to an upper-side protective layer.

to Solution of the above object is in a first inventive Alternative provided that at least on the upper side in the Fiber structure is provided a color receiving mass, which is the top side Area of the fibers at least substantially sheathed and that at the top of the paper layer open spaces of the covered fiber structure remain, so not from the ink receptive mass are covered. In a second alternative embodiment of The invention is at least on the upper side in the fiber structure, a color receiving mass provided, wherein the ink receiving mass an average particle size of less than 1000 nm. In the third invention Alternatively, the fibers of the fiber structure on the upper side only in some areas with a colorant mass embedded in the fibrous structure and / or can be applied to this, so evidenced that the top of the paper layer open spaces between the Fiber structure remain.

All of the alternatives according to the invention are based, first of all, on the basic idea of providing a dye-receiving mass as a so-called pigment coating onto which the printing ink or ink is applied. At the same time it is with all erfindungsge According to embodiments such that no quasi-closed, planar surface is provided by the ink receiving mass. In the two abovementioned embodiments with the sheathing of the fibers or the use of ink receiving particles in the nanoscale, uncovered interspaces in the fiber structure which are open towards the outside and which ensure adequate through-hardening of the paper layer remain. In the third embodiment, the top of the fiber structure is only partially covered with the ink receiving mass, so that in any case remain free areas, which also ensure the necessary Durchbeharzung.

at theoretical considerations are the aforementioned inventive Alternatives have been rejected by the applicant first, because it had been feared that the paper layer with the incorporated or applied ink composition, at in the end, despite the ink absorption mass, the cellulose fibers are still the caused structure is recognizable, not a sufficient print result achieve. Ultimately results in the invention no closed, substantially flat pressure surface as in the prior art. In practical experiments, then have been carried out, it has been found that is the paper of the invention achievable print result not or only insignificantly from the print result differs, which achieved in the aforementioned known paper becomes.

The Incidentally, the invention offers the possibility that the Paper layer with the color receiving material both before and after printed on the application to the body of a component can be. So it is possible on the one hand, the paper first to print and stock it after printing, for example on rolls or sheets. Subsequently, the printed Paper layer with the main body of the component under pressure and heat are pressed, the resin first melts and then immediately cures. Alternatively, it is possible to have a teilbeharzte and unprinted paper layer with the embedded or applied Ink composition first on the body in the manner described above and then the base body with the already applied paper layer too print.

Around the fiber structure and thus the spaces between the fibers on the top of the paper layer on the one hand largely to receive or uncovered and on the other hand a comprehensive Sheath of the upper side fibers and thus a good ink absorption area To make available, the particles of the ink composition should an average diameter between 50 nm and 400 nm, preferably between 100 nm to 300 nm and in particular between 150 nm and 250 nm. Very good experiments are with particle sizes in the range of about 200 nm in diameter has been achieved.

In scanning electron microscopic investigations, it has been found that a plurality of intermediate spaces with a length of greater than 20 μm, preferably greater than 30 μm and in particular greater than 40 μm should be provided on the upper side of the paper layer between the fibers coated or coated with the ink receiving mass. It is understood that spaces with a length significantly greater than 40 microns can be provided. Furthermore, the gaps should have an opening area of greater than 250 nm ² , preferably greater than 500 μm ² and in particular greater than 750 μm ² . Again, it is understood that significantly larger opening areas than 750 microns ² can be provided. At intervals with the aforementioned dimensions results in an excellent Durchbehar tion of the paper layer according to the invention regardless of whether the Beharzung from above or from below is carried out.

Moreover, it is particularly advantageous in the case of the paper according to the invention if the aforementioned dimensions of the interstices are not only provided "sporadically", but if they are located on the entire upper side of the paper layer. It has been found that on average at least one intermediate space, preferably more than three and in particular more than ten intermediate spaces of the aforementioned type, should be provided on the upper side per unit area [nm ² ].

In order to prevent the interstices between the cellulose fibers of the fiber structure from being closed by the ink receiving composition, the basis weight of the ink receiving composition should preferably be between 0.5 g / m ² and 20 g / m ² . Thus, in the case of the paper layer according to the invention, a significantly smaller proportion of ink receiving mass is used than in the prior art. This has a considerable effect on the acquisition costs of the paper layer. Thus, the cost of the paper according to the invention by a factor of 3 less than in the initially mentioned, known from practice paper.

Furthermore It has been found that a particularly good print result then, if the dye-absorbing mass also contains titanium dioxide, Barium sulfate and silicates, in particular as main components.

It is also particularly favorable that the ink receiving mass is basic. It is stated have been that the applied resin is usually basic, that has a pH greater than 7. Furthermore, it has been found that the resin solidifies more readily in an acidic environment than in a basic environment. In order to ensure a good through-cure, the ink composition and, where appropriate, also the paper of the fiber structure should be basic.

Moreover, the paper or the fiber structure should be a decorative paper which has a weight per unit area but no color fraction of between 30 g / m ² and 300 g / m ² , preferably between 50 g / m ² and 120 g / m ² and in particular of about 70 g / m ² should have.

The Inventive paper layer with in the Fiber structure embedded colorant mass can basically be discolored before printing and only after the printing become. In principle, it is also possible in that the paper layer is defined before printing from the underside is inscribed that the upper portion of the Fiber structure with little or no resin content is preferred over a maximum of 30% of the thickness of the fiber structure extends. Especially the upper paper layer area extends over only maximum 20% of the thickness of the paper layer and more preferably over maximum 10% of the thickness of the paper layer, each individual value between 0.1% of the thickness of the paper layer and 30% of the thickness of the paper Paper layer possible and expressly provided as essential to the invention is.

Reference should is in this context, too, that between the upper paper layer area with little or no resin content and the lower paper layer area with high resin content in practice no exact dividing line results, as with a tank from below forth a concentration gradient of the resin from below to above is such that the highest concentration the bottom is present. The transition of the upper paper layer area to the lower paper layer area is characterized by an abrupt change the concentration gradient, while the concentration gradient from the bottom of the lower paper layer portion to the top thereof on the one hand and from the bottom of the upper paper layer area the top side, on the other hand, is substantially constant or decreases continuously.

Furthermore The above values refer to the thickness of the upper paper layer portion the not yet pressed state of the paper layer, ie if the paper layer is not yet on the main body of the Component applied under pressure and / or heat influence is.

In addition, there is a further, quite considerable advantage in the aforementioned defined Teilbeharzung. Usually, on a printed component, at least when it is used in the floor area, an upper protective layer, which is also entrained, applied under pressure and heat influence. In the from the EP 1 749 676 A1 As a rule, after the protective layer has been pressed, it is known that a substantially resin-free layer area remains between the resin of the protective layer and the resin of the paper layer. Since the resin of the protective layer does not or not adequately bind to that of the paper layer, this can, as already explained at the outset, lead to detachment of the protective layer. In the context of the present invention, it has been recognized that sufficient bonding of the resin of the paper layer to the protective layer can be ensured by the comparatively large interstices between the fibers.

to Achieving a defined resin layer thickness in the paper layer is the amount of the resin portion supplied to the lower side depending on the porosity and thus the absorbency the paper layer and the viscosity of the resin procedurally defined controlled. If the tanking is over, for example a roller that passes through a dipping bath, the paper layer with the underside is guided over a roller, made, play the immersion depth as further process parameters the roller, the surface condition of the roller, the diameter the roller, the contact pressure between the paper layer and the roller and the transport speed of the paper layer a Role. It is understood that the resin in other ways can be applied to the paper layer, for example by Nozzle application.

to Achieving a defined layer thickness of the upper paper layer area By the way, it makes sense that the paper layer defined from the top with one not with the resin soaked in a mixing barrier liquid, that a preferred over a maximum of 30% of the thickness forms the paper layer resulting barrier layer for the resin. The application of the barrier liquid can in the same way as the application of the resin or in principle done in a different way. After the paper layer has hardened the barrier liquid evaporates. The original then occupied by the barrier liquid space forms the upper paper layer area. However, it is understood that it In principle, also possible, the barrier liquid to admit so that ultimately no defined barrier is produced.

It is preferred in this context that the barrier liquid includes the ink composition of the invention, which can be found in the Ver deposited in the upper layer of paper layer, so that then results in the sheathing or coating of the fibers.

Possible but it is also that the ink composition in conjunction or following the impregnation with barrier liquid is applied. The ink receiving mass can be separate or together with the barrier liquid by rolling, spraying, Doctoring, blade coating, air brushing, casting process, Film presses, linen presses, curtain casting and / or be applied by slot nozzle application.

The Aerosoling can be done with only one resin or optionally in several Beharzungsschritten also done with different resins, to achieve certain properties of the paper layer. After this Can harden a drying of the paper layer and then the application of the ink receiving mass done. This can happen re-dry. In an alternative embodiment there is a so-called wet / wet treatment. in this connection The ink receptive material is applied before the resin is completely dried is, so still in a liquid or gelled or angelic state is located. Subsequently, the co-drying of the resinated and with the color receiving material provided paper layer.

Incidentally, in experiments which have been carried out, it has been found that the weight per unit area of the resin fraction in the paper according to the invention should be between 5 g / m ² and 300 g / m ² , preferably between 20 g / m ² and 100 g / m ² In order to ensure a good connection between the paper layer and the main body of the component and optionally the protective layer to be provided.

at the resin itself is preferably a reactivatable Resin, in particular an aminoplast, such as a melamine resin or a urea resin. Preference is given to resins 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, Poly (meth) acrylates or unsaturated polyester resins used.

Furthermore It has been found that it is to achieve good printing results favorable is that the paper layer before, while and / or heated or heated after the application of the color layer becomes. For this purpose, corresponding heating devices can be provided be that heat the paper layer or the ink composition. This can, for example, via appropriate blower respectively. Instead or additionally Infrared, in particular NIR heaters and / or microwave heaters be provided directly on the water content in the paint layer Act. The heating or heating can, as before executed before, during and / or after printing respectively. For this purpose, one or more heaters can be provided be, where the heating section not only be provided selectively, but also about a bigger one Extend range, for example, between 0 and 5 m and in particular between 0 and 2 m before and / or after the respective pressure point.

When Preferably, a flat pre-heating and heating has over heated surfaces, over which the paper before and after printing is proved. conveniently, the temperature of these surfaces should be at the pre- and / or Reheating between 30 ° C and 40 ° C, preferably at about 35 ° C.

in the Area of the printer head are good experiences with a radiant heat source made directly on the water content of the paint layer acts. It has a warming to 42 ° C proved favorable. The removal of the resulting water vapor should be done via a controlled airflow. Furthermore the temperature should be sensor-controlled, especially in the area of the printer head be an overheating or an inadequate one Prevent heating. Anyway, the aforementioned leads Heating to an immediate drying of the paint layer on the Ink receptive layer as soon as the ink from the printhead is abgege ben, as well as a drying of the fiber structure. Reference should is present in the fact that the aforementioned heating or Warming also independent inventive meaning belongs, so regardless of the invention Paper layer.

To On drying, the paper layer is either on sheets cut or rolled up as a continuous web. in principle it is also possible in the method according to the invention that before cutting / rolling or printing is done.

Furthermore, the present invention relates to a printed or printable, sheet-like component, in particular for floor, wall, ceiling and / or furniture applications, with a flat body and with an applied to the body printable or printed paper layer according to any one of the preceding claims , In the invention, it is thus the case that the paper layer according to the invention is principally printed prior to further processing and only subsequently applied to the main body of the component. However, it is also possible to first laminate the paper onto a component, then to print and finally to paint or otherwise coat it. The paper according to the invention is therefore not limited to a particular type of production.

It is preferred that the base body has been directly coated with the paper layer in Kurztaktpreßverfahren. Here, the resinated paper layer hardens directly on the base plate of a corresponding press under pressure and heat melting. Essential in the Kurztaktpreßverfahren is first that the base body as the support plate, the compression pressure, which is usually between 200 and 650 N / cm ² , may not or only slightly yield. In addition, the base body and the paper layers to be applied must not touch the hot press plates during insertion and discharge. The temperature during compression is generally between 80 ° C to 250 ° C, preferably between 140 ° C and 200 ° C. The particular temperature during pressing depends on the reactivation temperature of the resin. Finally, the critical lying time, that is, the time from the first contact of the resinated paper layer with the press plate to reach the necessary pressing pressure to observe. The critical lay time should be extremely short.

Although it is possible in principle, the inventive Paper layer with all known printing methods, in particular also to print the gravure printing, the printing of the Paper layer preferably by means of a digital printing method, in particular, an ink jet printing method. Here come then preferably so-called inkjet digital printers are used, with which to achieve excellent printing results. About that In addition, unlike gravure printing, decors can be made in a simple way computer-aided design and can be printed at short notice. By the way, it is different for gravure printing also possible that the paper layer is printed after the curing.

to Printing is preferably solvent-based ink and / or aqueous ink. Basically you can also UV-based color systems can be used. These have, however the disadvantage of odor development. In addition, you can problems arise during pressing.

Furthermore The present invention relates to a process for the preparation a printed or printable flat component of the aforementioned type, wherein the process characteristics of the previously mentioned embodiments readily revealed.

Furthermore It is expressly stated that the the above and below range indications and intervals all Individual values within the ranges and intervals and intermediate intervals or intermediate range indications also in the decimal range and be regarded as essential to the invention without it an explicit mention of individual values or intermediate intervals or intermediate range indications.

following Embodiments of the invention with reference to the drawing described in more detail.

there shows

1 a schematic cross-sectional view of a paper layer according to the invention,

2 a schematic cross-sectional view of a printed and durchbeharzten paper layer,

3 a schematic cross-sectional view of a sheet-like component, on whose base body the paper layer is applied,

4 an enlarged view of the top of the paper layer according to the invention,

5 one of the 4 corresponding view of the top of a known paper layer on the same scale as 4 .

6 one of the 4 corresponding view of the upper side of the paper layer according to the invention in a further enlarged scale,

7 one of the 4 corresponding view of the top of the known paper layer in the same scale as the illustration according to 6 .

8th one of the 4 corresponding view of the paper layer according to the invention in a further enlarged scale,

9 one of the 4 corresponding view of the top of the known paper layer in the same scale as the illustration according to 8th .

10 a flow chart of the inventive method for producing a component according to the invention and

11 an alternative flowchart of the method according to the invention.

In 1 is schematically a paper layer 1 shown. The paper layer 1 consists of one conventional absorbent or liquid receptive paper material, in this case from a decorative paper. The decorative paper has a in the 4 . 6 and 8th recognizable fiber structure, which is composed of a plurality of fibers, in this case cellulose fibers. The paper layer 1 as such may be part of a roll or a bow. The paper layer 1 in this case has an upper side 2 for later printing and a bottom 3 on which to hang up on the main body 4 a component 5 is provided. In the component 5 it can be any surface, printed or printable element, which can be used in the floor, wall, ceiling and / or furniture application. In particular, it is the component 5 around a plate, or a panel.

Although the 4 . 6 and 8th only a view on the top of the paper layer 1 show, it follows from these representations that the paper layer 1 a variety of fibers 6 which ultimately has a three-dimensional fiber structure 7 form. Between the individual fibers 6 there are gaps 7 ,

As it turned out 1 results is upper side in the fiber structure 7 a colorant 9 provided that ultimately one in the fiber structure 7 forms at least substantially incorporated on the upper side ink receptive layer. The colorant 9 is not or only slightly above the fiber structure 7 upwards over. Because the colorant mass 9 is very fine-grained, namely has particles with an average diameter in the nanoscale, encapsulated the ink receiving mass 9 the fibers 6 the upper portion of the fiber structure 7 , Due to the fine grain of the particles of the ink receiving mass 9 remain at the top of the sheathed fiber structure 7 that is also the top 2 the paper layer 1 forms, open spaces 8th , This results in particular from the 4 . 6 and 8th , which also clarify that the colorant mass 9 not so over the top of the fiber structure 7 lays that fibers 6 as such are no longer recognizable. The fibers 6 stay as at least partially uncovered.

The 4 . 6 and 8th clarify that despite the top-side ink receptive mass 9 the fiber structure 7 at least partially still recognizable and open spaces 8th between the fibers 6 remain. This feature ultimately represents the decisive difference with the prior art, as can be seen from a comparison with the 5 . 7 and 9 results. The two aforementioned figures show that the fiber structure of the known paper layer is no longer recognizable there. The top of the paper layer is formed by a coarse ink receptive layer. The diameter of these particles is on average a few micrometers. This is in contrast to the paper layer according to the invention 1 the ink receiving mass ultimately due to the relatively coarse particles on the fiber structure, it covers and covers it completely so strong that it is no longer recognizable. As a result, there are no open spaces between the fibers open at the top.

The between the individual particles in the 5 . 7 and 9 shown ink receptive layer provided spaces in the known paper layer are relatively evenly distributed and have both a small length and a small opening area. This is different from the paper layer according to the invention 1 , As is clear from the 4 . 6 and 8th results are the spaces between 8th between the fibers 6 the fiber structure 7 distributed very unevenly, have a much greater length and a much larger opening area than in the prior art. Finally, in the case of the paper layer according to the invention 1 a variety of spaces 8th provided with a length of greater than 40 microns and an opening area of greater than 750 microns ² . Such large spaces 8th are ultimately over the entire paper layer 1 - although unevenly or irregularly - distributed, wherein per unit area [mm ² ] on average more than 10 such spaces 8th are provided.

The basis weight of the ink receiving mass 9 is comparatively low and in the present case is around 5 g / m ² . Such a low weight per unit area is sufficient, at least for the fibers, given the small particle size, which is about 200 nm on average 6 in the upper part of the fiber structure 7 to shroud and at the same time a sufficient number of spaces 8th to leave open. It should be noted, however, that it differs from the description in 1 , In principle, it is also possible that the ink composition 9 into the central area, the lower area or even to the bottom 3 the fiber structure 7 extends. In any case, however, it is necessary for the necessary hardening that at every level of the fiber structure 7 the above-described open spaces are present.

The colorant 9 itself has as main constituents titanium dioxide, barium sulfate and silicates and is otherwise basic.

As previously mentioned, the fiber structure becomes 7 the paper layer 1 formed by a decorative paper that has a basis weight, as in 1 represented, so without proportion of resin but with color receptive mass 9 , of about 70 g / m ² . It is understood that the decor paper also a much smaller or a much larger Flä may have weight. In the 1 illustrated paper layer 1 is unprinted and unbeharzt. The paper layer 1 is first printed for further processing, that is with a print layer 10 provided and then doctored. This condition is in 2 shown schematically, wherein the paper layer 1 completely dentate over its entire thickness. In this case, the resin concentration over the thickness of the paper layer 1 be basically the same or vary from one side to the other or from both sides towards the middle. In any case, the resin, which is preferably a melamine resin, or its viscosity, is in the nature of the paper material of the paper layer 1 and also tuned to the Beharzungsverfahren that a complete Durchbeharzung the paper layer 1 is ensured over its entire thickness. The weight per unit area of the tanker fraction in the present case is about 80 g / m ² .

It should be noted that the paper layer 1 before printing also so defined from the bottom 3 The upper part of the fiber structure can be used 7 with little or no resin content over a predetermined thickness, preferably over a maximum of 30% of the thickness of the fiber structure 1 extends.

The print or ink layer 10 In the present case, it has been applied by means of an inkjet digital printer (not shown), that is to say by means of the ink jet printing method, although other printing methods, in particular gravure printing, are also possible. Both solvent-based and water-based inks can be used as printing inks.

In 3 is part of the component 5 represented, the already mentioned flat body 4 , in particular with a rectangular shape. The main body 4 can be constructed in one or more layers and in particular consist of wood and / or plastic materials. In particular, it may be in the component 5 be about wood-based panels, such as MDF, HDF or DKS boards or so-called HPL (High Pressure Laminate) plates. In the component 5 but it can also be thicker films, cardboard or plasterboard.

At the in 3 represented component 5 is on the top 11 of the basic body 4 the printed paper layer 1 applied and thus firmly connected. Furthermore, on the print layer 10 a protective layer 12 applied. The protective layer 12 , which is also dented, serves to protect the print layer 10 from UV radiation and especially from mechanical damage. So the print layer 10 is still recognizable, is the protective layer 12 transparent. Into the protective layer 12 Very hard particles, such as corundum, can be stored. It should be pointed out that the protective layer 12 usually with such components 5 realized, which are used in the ground area. Basically, on the protective layer 12 but also be waived. This applies in particular to wall and ceiling applications as well as furniture elements.

In 10 is schematically illustrated the inventive method in a Kurztaktpreßverfahren. The process begins with the known production of the paper in a paper machine, which is shown in process step A. The paper layer 1 is still part of a quasi-infinite paper web.

The paper production is followed in step B by a surface treatment by smoothing the upper side 2 to homogenize the surface and optionally a subsequent fine roughening of the previously smoothed surface. Subsequently, the ink receptive mass 9 on or in the top 2 on or introduced.

After surface treatment with the colorant 9 provided paper layer 1 the printing takes place and thus the application of the printing layer 10 in process step C. The printing takes place in the inkjet printing process via inkjet digital printer. When printing, the paper layer 1 still be part of a paper web or already part of an off the paper web cut sheet. The cutting on sheets can also be done later. However, part of process step C is also the heating of the paper layer before, during and / or after the application of the color layer. In the present case, it is the case that the paper layer 1 between 30 ° C and 40 ° C, preferably preheated at about 35 ° C, so that the ink already meets the preheated ink layer during printing, which supports the drying. When applying the ink, heating takes place via a radiation heater at 42 ° C., which is applied to the region of the paper layer 1 is addressed, which is currently being printed. Finally, even after printing via a third heating device (for example via a heated base plate), so-called after-heating likewise takes place between 30 ° C. and 40 ° C.

In process step D, the complete through-etching of the printed paper layer takes place 1 , so that the state according to 2 results.

In method step E, the paper layer 1 with the main body 4 pressed. At the same time also the protective layer becomes 12 compressed in a corresponding pressing device. Under the pressure and heat of the pressing plates of the pressing device, the resin melts in the paper layer 1 and the resin in the protective layer 12 and hardens during the pressing process immediately, so that on the one hand a firm connection of the paper layer 1 to the main body 4 and on the other hand a firm connection of the protective layer 12 on the paper layer 1 results. Due to the hardening of the paper layer 1 Incidentally, during pressing, there is such a firm connection between all layer materials that unintentional detachment need not be feared.

In 11 schematically an alternative embodiment of the method is shown. The process steps a and b correspond to the aforementioned process steps A and B of papermaking and the application of the ink receiving mass. This is followed by the method step c, wherein the paper web is teilbeharzt from its underside. The Teilbeharzung is defined such that the upper portion of the fiber structure 7 but in any case the top of the fiber structure 7 and the colorant mass located there 9 , at least remain essentially resin-free.

In method step d, the paper layer 1 , which is then already cut on sheets, on the main body 4 applied by compression in the mentioned pressing device. The paper layer 1 is still unprinted in this case and also has no upper-side protective layer 12 on.

After pressing the still unprinted paper layer 1 on the main body 4 becomes the unprinted component 5 now also printed in process step e in the inkjet printing process. Parallel to this or immediately afterwards, the heating of the applied pressure layer takes place 10 , Again, of course, a preheating of the paper layer 1 be made. This is followed by the final compression of the protective layer 12 in the pressing device in step f, to the protective layer 12 after melting and curing of the resin in the protective layer 12 with the paper layer 1 connect to.

Although that in 11 illustrated schematic method is procedurally complicated, it has the advantage that non-printed components 5 can be kept readily available and the printing can be made according to customer requirements, if necessary, at short notice.

1

paper layer

2

top

3

bottom

4

body

5

component

6

fibers

7

fiber structure

8th

interspaces

9

Color recording Mass

10

print layer

11

top

12

protective layer

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1749676 A1 [0005, 0005, 0021]

Claims (20)

Paper layer ( 1 ) for producing a flat, printed or printable component ( 5 ), in particular for floor, wall, ceiling and / or furniture applications, the paper layer ( 1 ) before or after the printing process for application to a flat base body ( 4 ) of the component ( 5 ) is provided under pressure and / or heat influence, wherein the paper layer ( 1 ) a fiber ( 6 ) having fiber structure ( 7 ) and wherein between the fibers ( 6 ) Spaces ( 8th ) are provided, characterized in that at least on the upper side in the fiber structure ( 7 ) a colorant ( 9 ), the fibers ( 6 ) in the upper area of the fiber structure ( 7 ) at least substantially encased, and that at the top ( 2 ) of the paper layer ( 1 ) open spaces ( 8th ) of the sheathed fiber structure ( 7 ) remain. Paper layer ( 1 ) for producing a flat, printed or printable component ( 5 ), in particular for floor, wall, ceiling and / or furniture applications, the paper layer ( 1 ) before or after the printing process for application to a flat base body ( 4 ) of the component ( 5 ) under pressure and / or heat influence, wherein the paper layer comprises a fiber ( 6 ) having fiber structure ( 7 ) and wherein between the fibers ( 6 ) Spaces ( 8th ) are provided, characterized in that at least on the upper side in the fiber structure ( 7 ) a colorant ( 9 ) is provided and that the ink receiving mass ( 9 ) Has particles with an average diameter of less than 1000 nm. Paper layer ( 1 ) for producing a flat, printed or printable component ( 5 ), in particular for floor, wall, ceiling and / or furniture applications, the paper layer ( 1 ) before or after the printing process for application to a flat base body ( 4 ) of the component ( 5 ) is provided under pressure and / or heat influence, wherein the paper layer ( 1 ) a fiber ( 6 ) having fiber structure ( 7 ) and wherein between the fibers ( 6 ) Spaces ( 8th ), characterized in that the fibers ( 6 ) of the fiber structure ( 8th ) on the upper side are only partially covered with a color receiving mass or layer such that at the top of the paper layer ( 1 ) open spaces ( 8th ) of the fiber structure ( 7 ) remain. Paper layer according to one of the preceding claims, characterized in that the ink receiving mass ( 9 ) Has particles with an average diameter between 50 nm to 400 nm, preferably between 100 nm to 300 nm and in particular 150 nm and 250 nm. Paper layer according to one of the preceding claims, characterized in that on the upper side ( 2 ) of the paper layer ( 1 ) a plurality of open spaces ( 8th ) are provided with a length of greater than 20 microns, preferably greater than 30 microns and in particular greater than 40 microns and / or an opening area of greater than 250 microns ² , preferably greater than 500 microns ² and in particular greater than 750 microns ² . Paper layer according to one of the preceding claims, characterized in that on the upper side ( 2 ) per unit area [mm ² ] on average at least one space ( 8th ), preferably more than three and in particular more than 10 intermediate spaces ( 8th ) are provided. Paper layer according to one of the preceding claims, characterized in that the basis weight of the ink receiving composition ( 9 ) is between 0.5 g / m ² and 20 g / m ² . Paper layer according to one of the preceding claims, characterized in that the ink receiving mass ( 9 ) Titanium dioxide, barium sulfate and silicates. Paper layer according to one of the preceding claims, characterized in that the ink receiving mass ( 9 ) is basic. Paper layer according to one of the preceding claims, characterized in that the fiber structure ( 7 ) is formed by a decorative paper which has a weight per unit area but no ink proportion ( 9 ) between 30 g / m ² and 300 g / m ² , preferably between 50 g / m ² and 120 g / m ² and in particular of about 70 g / m ² . Paper layer according to one of the preceding claims, characterized in that the paper layer ( 1 ) is unbeharzt before printing and is only after the printing is doctored or that the paper layer ( 1 ) prior to printing defined from the underside ( 3 ) is that the upper portion of the fiber structure ( 7 ) with little or no resin content over a maximum of 30% of the thickness of the fiber structure ( 7 ). Paper layer according to one of the preceding claims, characterized in that the weight per unit area of the resin fraction is between 5 g / m ² and 300 g / m ² , preferably between 20 g / m ² and 100 g / m ² . Paper layer according to one of the preceding claims, characterized in that the resin is a reactivatable Resin, in particular an aminoplast and preferably a melamine resin or a urea resin. Paper layer according to one of the preceding claims, characterized in that the paper layer ( 1 ) before, during and / or after the application of the color layer ( 10 ) has been heated or heated and that, preferably, the heating / heating at a temperature below the reactivation temperature of the resin and in particular in the range between 30 ° C and 150 ° C. Paper layer according to one of the preceding claims, characterized in that the paper layer ( 1 ) is rolled up after the treatment for further processing as a web or cut on sheets. Printed or printable, flat component ( 5 ), in particular for floor, wall, ceiling and / or furniture applications, with a flat basic body ( 4 ) and one on the main body ( 4 ) applied printable or printed paper layer ( 1 ) according to any one of the preceding claims. Component according to claim 16, characterized in that the paper layer ( 1 ) before or after application to the base body ( 4 ) has been printed. Component according to claim 16 or 17, characterized in that the basic body ( 4 ) with the paper layer ( 1 ) has been directly coated in Kurztaktpreßverfahren. Component according to one of Claims 16 to 18, characterized in that the paper layer ( 1 ) has been printed by means of a digital printing method, in particular an ink-jet printing method, and that, preferably as a printing ink, solvent-containing and / or water-containing ink has been used. Method for producing a printed or printable flat component ( 5 ) according to any one of claims 16 to 19.