EP2794283A1

EP2794283A1 - Method for producing a print carrier

Info

Publication number: EP2794283A1
Application number: EP12810256.3A
Authority: EP
Inventors: Jules Fischer
Original assignee: Fofitec AG
Current assignee: Fofitec AG
Priority date: 2011-12-20
Filing date: 2012-12-19
Publication date: 2014-10-29
Also published as: WO2013092767A1; US20130156987A1; WO2013092768A1; EP2821241A1

Abstract

In the case of a method for producing a print carrier (400, 400') which is joined together in a coplanar manner from at least two sheet‑like print‑carrier sub‑webs, wherein, for one of the print‑carrier sub‑webs, use is made of a multi‑layered material with two cover layers (200, 300) and an amorphous adhesive‑containing substance (320) which connects these cover layers to one another, wherein, the one print‑carrier sub‑web has a smaller thickness along a peripheral strip than elsewhere, wherein the other print‑carrier sub‑web is a paper web (100) which has a smaller thickness along a peripheral strip (130) than elsewhere, and wherein the two print‑carrier sub‑webs are connected to one another in a coplanar manner along their two peripheral strips in a single pass of the webs, it is provided, according to the invention, that, in the same pass, it is also the case that the two cover layers are connected to one another in the form of cover‑layer webs by lamination to form the one print‑carrier sub‑web, and in that the smaller thickness of this print‑carrier sub‑web along its peripheral strip is maintained by use being made of cover‑layer webs of different widths or by the cover‑layer webs being connected to one another in a state in which they are offset laterally in relation to one another.

Description

Method for producing a print carrier

TECH N ISCH ES GEBI ET

The present invention relates to a method for producing a coplanar from at least two partial print carrier webs combined print carrier, wherein for one of the partial print carrier webs a multilayer material having two outer layers and a bonding them together containing an adhesive formless coating material is used, along a marginal strip, a partial print carrier web a By the way, the other partial print carrier web is a paper web which has a thickness less along its edge than its thickness, and wherein the two partial print carrier webs are coplanarly interconnected along their two edge strips in one pass of the webs.

STATE OF THE ART

Methods of this kind are known from WO 2009/1 35332 A2. For a partial printing carrier web, a multilayer material referred to as a laminate having at least two outer layers is used. The bonding, containing an adhesive formless coating material is a so-called Schallsim. The smaller thickness of the paper web along a marginal strip is achieved by removing a partial layer of the paper layer, for example by tearing off. From WO 201 2/01 9953 methods for the production of stamped sheets in web or sheet-shaped print media and their further processing are known. The web or sheet-shaped print carrier are provided in the pass through a punch with the punch so punctures that they remain connected to the print media still. The diecuts are in particular integrated cards. Simultaneously with the punching of the diecuts are in the print media relative to these punched with the same punch each tolerance-free arranged markings. These markings can be used in the subsequent processing of the punched in the passage of the print carrier by another tool for the control and precise placement of a einzusteuernden feature, such as a flush-mounted on the stamped imprint.

Also known are multilayer materials of the type mentioned are z. B. in the form of composite films, wherein at least one of the two outer layers is an at least durchschimmernde, stretched plastic film. In connection with the production of such composite films one also speaks of laminating. It is characteristic of these multilayer materials that the informal coating material containing the adhesive and as a rule consisting entirely of the adhesive forms a very thin layer which does not contribute significantly to the total thickness of the multilayer material in relation to the cover layers. Its properties are thereby determined almost exclusively by the cover layers. The coating or adhesive is except the compound of the outer layers no further function. As a cost factor, the amount of adhesive used is minimized as much as possible. In DE 1 99 60 41 1, a dispersion adhesive for bonding plastic films for producing composite films is used as the adhesive, wherein a certain barrier effect is additionally achieved by the adhesive. After application and drying, the adhesive is tacky, which is also required for subsequent lamination. This is called dry lining. Finally, the adhesive must cure for a few days until it reaches its desired strength.

EP 0 798 357 discloses the use of aqueous dispersions as hot-melt lacquer. With this paint, a first substrate is coated, after which the paint is dried. At room temperature, the paint is not tacky afterwards. This is important to allow the coated substrates to be stacked before joining to another substrate without sticking together. For bonding to another substrate, the coated substrates are pressed thereon using heat to thermally activate the hot-seal lacquer. This technique is mainly used in food packaging, where a lidding film is sealed onto the edge of a cup of thermoformed plastic film. Again, the layer thicknesses of Heisssiegellacks are generally desired thin.

From US 6,699,629 B 1, a relatively thick multi-layer material is known, which is provided as a carrier of printed images and at low weight has the typical for this purpose further properties in terms of stiffness, flatness, smoothness, gloss, whiteness and opacity. It has a core of a closed-cell foam made of a polymer material, the hollow micro- Spheres can be mixed. Layers of paper or plastic films, preferably biaxially oriented plastic films, are used for the cover layers. In one embodiment, they are laminated to the foam core using an adhesive. It can be assumed that even here as little as possible adhesive is used.

In other embodiments, one of the cover layers is made together with the foam core in one operation by coextrusion of different materials or by extrusion of the same material, which is prevented from foaming on one side. The other topcoat is subsequently laminated to the foam core using an adhesive.

From WO 98/26938 a form is known in which in a paper sheet a card is integrated, which is generated by congruent, executed from opposite sides punching. The card is held by an interlayer which is not severed by the punches and which can be a partial layer of the paper sheet or a self-supporting layer adhered to the paper layer. By cutting the intermediate layer between the two punches, the card should be removed from the form. However, it has been shown that the required forces are not well controlled. If they are too big, the card can not always be removed nondestructively. If they are too small, there is a risk that the card will prematurely get out of the form, especially if problems occur during the passage through the printer. Forms with integrated cards often have dispensations on a primary support in the form of a sheet of paper in A4 or letter format for reinforcing and / or plasticizing the cards or as carrier layers for them. In order not to make the whole form too thick, too stiff and too heavy, as well as for cost reasons, these charges are usually smaller in area than the primary carrier and only locally available in the area of the cards. This leads to a local thickening, which in turn leads to a skew in the stack. This skew causes problems in sheetfed printers whose magazines can be filled only partially.

Mono thick films with thicknesses of z. B. 1 25 m or 1 75 m are also used for the production of cards or the like, especially if a high rigidity and / or resistance u.a. is required against moisture. However, such thick films, especially those made of polyester, are relatively expensive and not always available in sufficient quantity on the market.

PRESENTATION OF THE INVENTORY

The object of the invention is to provide a method for producing a coplanar from at least two flat partial printing carrier webs combined print carrier of the type mentioned, which is particularly efficient, thereby enabling a cost-effective, economical production of the print carrier. This object is achieved by a method having the features of claim 1. The method according to the invention is accordingly characterized in that, in the same pass, in which the two partial printing carrier webs are coplanarly connected along their two edge strips, the two cover layers in the form of cover sheet webs are also connected to one another by a partial print carrier web, and the smaller thickness which is obtained by a partial printing carrier web along its edge strip, that cover layers webs of different widths are used or that at the same width, the cover sheet paths are laterally offset from each other connected to each other.

The cost-effectiveness and thus the cost-effectiveness of the method according to the invention results inter alia from the fact that in the same pass three webs which are unrolled from three rolls are brought together and joined together. Thereafter, the resulting print carrier web for further processing in an endless form either rolled up or separated into sheets.

The informal coating material for bonding the two cover layer webs of one partial print carrier web can likewise be coated in the same pass on one or both cover layer webs. In this regard, however, a two-stage process is preferred with a separate, preceding coating of one or both cover layers, which is wound up again after this coating and is unrolled again after an intermediate storage for carrying out the process according to the invention. For producing the one partial print carrier web, cover layer webs can be used, of which at least one is or has an at least through-shining, stretched plastic film.

The one partial print carrier web can be further prepared with a total thickness of 1 00-800 m, wherein the informal coating material contributes to this total thickness at least 1 8%, possibly even at least 30%, and wherein the adhesive contained in the coating material at least once with heat and pressure activatable, but not sticky at room temperature.

In a further embodiment, cover sheet webs may also be used to produce the one partial print carrier web, at least one of which is also a multi-layer material web with two load-bearing cover layers and a shapeless coating material between the cover layers, wherein at least one of the two cover layers is an at least through-shining, stretched plastic film the coating material contains an adhesive, wherein the total thickness of the multilayer material is 1 00 - 800 m, the coating material contributing to this total thickness at least 1 8%, possibly even at least 30%, and wherein the adhesive contained in the coating material at least once with heat and Pressure can be activated, but not sticky at room temperature.

For producing the one partial print carrier web it is also possible to use cover sheet webs, of which the other has an at least translucent, stretched plastic film, a metal foil, a paper layer or a combination thereof.

The mentioned, at least translucent, stretched plastic film can be provided with a print layer or be, so that it is easy to print. Further, this print layer may be opaque or be formed. Together with this print layer, the plastic film is no longer shimmering through.

The connection of the two partial printing carrier webs along their two edge strips and the connection of the two outer layer webs to the one partial print carrier web is preferably carried out on the same laminating unit, which substantially reduces the apparative effort for carrying out the method according to the invention, and enables a compact, space-saving design of the device used ,

The method becomes particularly efficient if, in the same pass, the edge strip of the paper web, along which it has a smaller thickness than its thickness, is obtained by tearing off a strip from the paper web. As an aid for tearing off, an adhesive tape may be used, as described in WO 2009/1 35332 A2.

Alternatively or additionally, in the same pass, the edge strip of the paper web, along which it has a smaller thickness than its thickness otherwise, can also be obtained by pressing the paper web. The pressing of the paper web is preferably carried out on a device with a magnetic and a counter-cylinder, wherein on the magnetic cylinder, a sheet is magnetically fixed with a raised pressing strip which forms a substantially closed, yet still open ring on the magnetic cylinder.

If the print carrier with stamped z. B. in the form of integrated cards and this must be provided in a later step with a einzusteuernden on them feature such as a flush-mounted imprint or the encoding of a magnetic stripe on them, a further rationalization can be achieved by the following measures: The said tracks and / or the print carrier produced therefrom are / is provided in the same run with a punching tool with the diecuts. In this case, with the same punching tool each tolerance-free arranged markers are punched free relative to the punched, this z. B. punched edges are. These markings can then be used in the subsequent processing of the punched parts in the passage through another tool for controlling the feature to be controlled. Usual tolerances of such control units in the millimeter range can be reduced with these measures by an order of magnitude.

With the same punching tool, the print carrier web, together with the punching of the diecuts, can also be separated into bows. As markings, the sheet edges can be easily used in this embodiment. Finally, the formless coating substance used is preferably one which, due to at least one admixture with the adhesive, is less dense, stiffer, opaque, white, better or less thermally conductive, electrically insulating or conductive, electromagnetic and / or high-frequency (HF) and / or low-frequency ( NF) better absorbing electromagnetic fields and thus the electromagnetic radiation background better shielding, heat-resistant, thermosetting, flame retardant, antibacterial, containing liquids or fragrances, receiving or donating, chemically reactive and / or phosphorescent or rechargeable with daylight or UV light and thereby luminescent in the dark is.

KU RZE EXPLANATION OF FIGURES

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it:

Fig. 1 shows a sectional view of an embodiment of a multilayer material which can be used within the scope of the invention;

Fig. FIG. 2 shows a method for producing the multilayer material of FIG. 1; FIG.

Fig. FIG. 3 shows another method for producing the multilayer material of FIG. 1 ;

Fig. 4 a) shows in plan view a section of a print carrier made from a multilayer material which can be used in the context of the invention with an integrated one Card, b) the print carrier in section (i - i) and under c) in the same representation the print carrier with dissolved out card;

Fig. 5 each in sectional view under a) a portion of a partial printing carrier made of a multilayer material according to FIG. 1 with a thickness-reduced edge strip, under b) a portion of a partial print carrier made of paper, also with a thickness-reduced edge strip and under c) one coplanar from the two partial printing media joined together print carrier;

Fig. 6 under a) in section a press plate for pressing an endless partial print carrier made of paper and b) the press plate in supervision;

Fig. 7 shows a sectional view of an embodiment of a multilayer material which can be used according to the invention with an additional print layer;

Fig. 8 shows a sectional view of an embodiment of a multilayer material which can be used according to the invention with an additional adhesive layer;

Fig. 9 shows a sectional view of an embodiment of a multilayer material which can be used according to the invention with an additional functional layer; and

Fig. 1 0 under a) a method according to the invention for producing a print carrier from three continuous webs in the same run, under b) the three continuous webs in plan view and c) in a sectional view (ii-ii) the resulting print carrier. The figures are schematic, in particular the layer thicknesses are greatly exaggerated.

WAY TO RUNNING THE INVENTORY

Fig. 1 0 illustrates under a) a method according to the invention for the production of a print carrier 400 in continuous form or individual print carrier sheets 400 'of three continuous webs 1 00, 200 and 300 in transit through four stations I-IV, each with two cylinders. At least one of these cylinders may be a magnetic cylinder on which a sheet may be magnetically fixed, for example in the form of a stamped or pressed sheet. In b), the endless webs and a printing carrier sheet produced therefrom are shown in plan view in parallel. A section (ii-ii) through a print carrier sheet 400 'is shown under c). The continuous webs are unwound by appropriately designated roles. The print carrier 400 is wound on a correspondingly designated roll. The individual print carrier sheets 400 'are stacked.

The continuous web 1 00 is a paper web. In the station I, it is reduced in its thickness along an edge strip 1130 by tearing off a partial layer, as shown in FIG. 5b is shown. The tearing off of the partial layer takes place by means of an adhesive strip, which is unrolled at 1 1 0 and glued on the lower cylinder on the paper web 1 00. In the gap between the two cylinders, the adhesive strip is pulled off the paper web again, wherein it takes along the partial layer and is rolled up again together with it. An extraction would also be possible here. The tearing of the sub-layer can be by cutting the paper web 1 00 along the edge strip 1 30 facilitate, whereby a straight crack edge is achieved. This separation can also be done on the lower cylinder by providing it with a peripheral cutting edge (not shown).

The tape can be rolled up at 1 1 0 on itself. If the adhesive of the adhesive strip does not permit this, the adhesive side of the adhesive strip could additionally be provided with a cover (as provided in the continuous web 300 and described below). This cover would then have to be removed before the connection with the paper web yet.

The paper web 1 00 then passes through the station I I, in which the already weakened edge strip 1 30 additionally compressed and further reduced in thickness, as will be explained below with reference to FIG. 6 in more detail. This additionally gives a smoothing and a solidification of the weakened by the previous tearing in his cohesion paper material, which also has a favorable effect on the quality and durability of the subsequent connection with the endless web 300.

Optionally, this pressing can be dispensed with if the desired residual thickness of the edge strip 1 30 has already been reached with the paper tear in the station I. In this case the station II could be saved or the paper web 1 00 could be guided around it. On the other hand, it may be possible to achieve the desired residual thickness of the edge strip 1 30 solely by pressing in the station II. In this case, Station I could be saved or reorganized. be gene. The type of thickness reduction used or whether it requires both methods, as shown, depends on the paper quality, the paper thickness and the desired residual thickness of the marginal strip.

The continuous web 200 is in the simplest version and as in Fig. 1 0 also assumed a film web. The continuous web 200 could also be a multi-layer material, as will be described below with reference to FIGS. 1, 7, 8 and 9. But it does not necessarily have to be separable.

As can be seen in b), the endless web 200 is parallel to the endless web 1 00 and flush with this, but without mutual overlap on the side of the weakened edge strip 1 30 out. The connection of the two continuous webs 1 00 and 200 with each other is achieved only by the endless track 300 and its overlap with both tracks 1 00 and 200.

The continuous web 300 comprises, in the simplest embodiment, a film web 3 1 0 provided over its entire area with a self-adhesive layer 320. In order to be wound onto itself on the roll 300, the self-adhesive layer 320 is still provided with a siliconized cover 330 there. This is withdrawn after unwinding at 340 of the self-adhesive layer 320 and rolled up at 350. With the self-adhesive layer 320 directed against the other two endless webs 1 00 and 200, the web 300 is then combined in the station III with these and connected by means of the self-adhesive layer 320 under pressure in the gap between the two cylinders to the print carrier 400 (laminated). As can be seen under b), the endless web 300 is slightly wider than the endless web 200 and that just by the width of the weakened edge strip 1 30 of the paper web 1 00. On the outside, the tracks 200 and 300 are aligned flush with each other. As a result, the continuous web 300 completely covers the continuous web 200 and overlaps the weakened edge strip 30 of the paper web 1 00, as can also be seen in the sectional view of (c). It can also be seen in this illustration that the thickness of the paper web 1 00 coincides with the sum of the thicknesses of the two endless webs 200 and 300, so that the print carrier 400, 400 'overall has a uniform thickness.

In principle, it would also be possible to connect two equally wide webs 200 and 300 to one another laterally offset from each other, in which case the resulting edge-side overhang of the web 200 via the web 300 would subsequently have to be cut off if necessary.

The print carrier 400, 400 'produced by the process according to the invention can be considered coplanarly assembled from two partial print carrier webs, one of the two partial print carrier webs comprising a multilayer material with two cover layers (the cover layers 200 and 3 10) and an adhesive containing them is formless coating material. In this regard, the formless coating material forms the pressure-sensitive adhesive 320. The second partial-pressure carrier web forms the paper web 1 00 in this regard. With reference to FIG. 5, a print carrier constructed in principle is described below, with the multilayer material there Material according to FIG. 1 is used. The materials of Figures 7, 8 and 9 would also be possible. With these materials, the informal coating material contains, among other optional components, an adhesive which can be activated at least once with the aid of heat and pressure. As described below for the multilayer material of FIG. 1, its two cover layers could be coated in a separate coating step prior to their mutual connection with an informal coating material and subsequently wound up for intermediate storage. Such pre-coated cover layers would also be suitable as continuous webs 200 and 300 in the context of the method according to the invention described above. I hre mutual connection and the connection with the paper layer would have to be done in a possibly to be modified Station III under activation of the adhesive in the formless coating material using heat and pressure. As also mentioned below, it would also be possible to pre-coat only one of the two cover layers. This cover layer would then be used as continuous web 300.

Station IV is a punching device. In this, the print carrier 400 can be isolated by punching in the print carrier sheets 400 'and / or provided with further punching if necessary. If no separation in bows or other punching is required, the station IV can be saved or bypassed.

As an example of a possible punching in the station IV in Fig. 1 0 in the print carrier 400, 400 'in the multi-layer material still cards 41 0 punched so that they remain arrested with the print carrier, but are herauslösbar from this. This can optionally be achieved by a punching, as described below in connection with the figures 4 or 5 or by a web punching or a cutting / piercing punching. In the latter, at least one of the two cover layers is completely severed. In the other, at least some bridges are left.

Fig. Finally, FIG. 1 0 also shows 420 punched-out notches in the edge of the print carrier 400, 400 ', which are produced by simultaneous punching together with the cards 41 0 in the station IV and are thus arranged practically free of tolerances relative to them. These notches 420, in a further processing of the print carrier 400, 400 'to positionally accurate Einsteuerung a feature on the cards such. B. a flush-mounted print can be used. As already mentioned, the continuous web of station I I I can also be separated into the print carrier sheets 400 'using the station IV punching tool. As a punching tool, a stamped sheet is preferably used in station IV, on which all desired cutting lines are formed as punched burrs. When singling in single sheets with such a stamped sheet can be used as markers for subsequent control of a feature instead of notches such as the notches 420, the sheet edges, as well as these are virtually tolerance-free relative to the cards 41 0 are arranged.

The multilayer material 1 of FIG. 1 comprises two load-bearing cover layers 10, 20 and a shapeless coating material 30 between these cover layers. The property "bearing" with respect to the cover layers or "informal" with respect to the coating material describe their respective state at the moment of the coating Applying the coating material, as will be described in more detail. The two outer layers 1 0, 20 are transparent, stretched plastic films made of polyester. By stretching, they are relatively dimensionally stable even at elevated temperature. The coating material 30 contains a thermally activated adhesive, is white or colored opaque and connects the two cover layers 10, 20 directly to one another.

The total thickness D of the multilayer material of FIG. 1 is 1 75 m and is thus in the range of relatively thick monofilms, such as those used for maps. The two cover layers 10, 20 each have only a thickness d 1 or d 2 of 50 m and the coating material 30 or the layer formed by it has a thickness d3 of 75 m. The coating material thus contributes to the total thickness D with a substantial proportion. In contrast, the thicknesses d 1, d 2 of the two cover layers 10, 20 are in the range of the thicknesses of conventional utility films. Together, the two cover sheets 1 0, 20 should not contribute more than 1 50 m to the total thickness D. In comparison with a 1 75 m thick, opaque polyester monofilm, the two outer layers 1 0, 20 even taken together are much cheaper, which u.a. due to their transparency (elimination of opacifiers such as expensive titanium dioxide) and the much greater consumption of such films.

The coating material 30 contains, as already mentioned, a thermally activated adhesive and admixtures to the adhesive. The adhesive is based for example on the basis of acrylate, polyurethane, polyester, epoxy resin, ethylene vinyl acetate (EVA) and / or ethyl ethylene acrylate (EAA). At room temperature it is not sticky, but can be activated by heating above room temperature and pressure. Its proportion in the coating material is between 25-69 wt .-%, preferably 39- 56 wt .-%, of the dry weight of the coating material 30. Accordingly, the proportion of admixtures 3 1 - 75 wt .-%, preferably 44 - 61 wt. -% and is therefore comparatively high, as is not common with laminating adhesives. The admixtures reduce the bond strength of the overall mixture of the coating material 30. By choosing the adhesive and the proportion of admixtures, the bond strength can be adjusted to a certain extent. By not too high adhesive strength, a separability of the multilayer material can be achieved in itself, which for certain applications, as in connection with FIG. 5 will be described, may be beneficial.

The admixtures are at least predominantly fillers in particulate form, in particular carbonates such as calcium carbonate, oxides such as titanium dioxide and zinc oxide, silicates such as kaolin and talc, sulfates such as barium sulfate, fibers such as glass fibers and / or light fillers such as hollow microspheres made of glass or plastics Question come. The fillers are finely dispersed in the adhesive, the adhesive forming a kind of matrix for the fillers. The fillers contribute to the volume of the coating material 30 and also cause its mentioned opacity. A pronounced whiteness can be achieved by adding titanium dioxide. Lightweight fillers such as the hollow microspheres contribute a lot to the volume without at the same time significantly increasing the weight. Thus, the coating material causes an advantageously low density of the multilayer material .. By the choice of fillers can also be the flexural rigidity of Multilayer material and / or the tensile strength of the coating material 30 vary and adjust.

EXAMPLE OF COMPOUND COMPOUND COMPOSITION TO ENG

In the examples below, the first component used is the adhesive.

A. Aqueous coating materials (with at most low solvent content <5%)

Example A.a

Components Density [g / cm ³ ] wt% dry Vol%

# 7 Hycar 26084 1 .00 50.50 50.50

# 5 Calcite MX 1 0 2.72 37.90 1 3.96

# 3 Tiona 595 4. 1 0 9.30 2.27

Total density / total 1 .46 97.7 66.73

Component # 7 is purely aqueous on a carboxy-modified acrylate base and adheres well to various topcoats. Without addition of a crosslinker, however, some crosslinking is achieved, which causes increased chemical stability and mechanical strength. The total density is relatively high at 1 .46 and therefore not very economical for most applications.

Example A.b.

Components Density [g / cm ³ ] Weight% Dry Vol%

# 8 Alfa VP 58/405 T Ö 44.50 40.45

# 2 kaolin K1 2.60 33.40 1 2.85 # 3Tiona 595 4.10 9.50 2.32

# 4Q-Cel5020 0.20 11.10 55.50

Total density / sum Ö89 98Ü 111.12

Component # 4 consists of hollow glass microspheres. This component reduces the total density to a more economical value of 0.89. Component # 8 serves as an aqueous polyurethane hot-seal lacquer for bonding the cover layers.

Example A.c

Component density [g / cm ^3] wt .-% dry Vol .-%

# 9 Michem Flex 1852 1 44 44

# 2 kaolin K1 2.6 32.9 12.65

# 3 Tiona 595 4.1 9.5 2.32

# 4Q-Cel 5020 0.2 11.1 55.5

Total density / sum 0.85 97.5 114.47

Here, component # 9 serves as an adhesive.

B. Solvent-containing coating materials

Example B.a

Components Density [g / cm ³ ] wt% dry Vol%

# 1 Rotoflex L-130 0.90 50.00 55.56

# 5 Calcite MX10 2.72 41.20 15.17

# 3 Tiona 595 4.10 8.80 2.15

Total density / total 1.37 100 72.88 Component # 1 is a heat-sealable paint that adheres and seals particularly well to polyester cover layers. Component # 5 improves the opacity and heat resistance better than component # 3, but does not achieve it in terms of optical properties. The total density of here is again relatively high at 1 .37.

Example B.b

Components Density [g / cm ³ ] wt% dry Vol%

# 1 a Rotoflex L 1 20- 20 0.87 50.00 57.47

# 2 kaolin K1 2.60 30. 1 0 1 1 .58

# 3 Tiona 595 4. 1 0 8.80 2. 1 5

# 4 Q-Cel 5020 0.20 1 1. 1 0 55.50

Total density / sum 0.79 1 00 1 26.69

The total density is reduced in this example by adding hollow glass microspheres of component # 4 while increasing the opacity and rigidity. Component # 1 a serves as an adhesive with better adhesion and sealing on oriented polypropylene film.

C. Extrudable coating materials

Example Ca Components Density [g / cm ³ ]% by weight Dry Vol .-% # 10 Amplify EA 100 0.93 46.00 49.46

# 5CalcitMX10 2.72 45.00 16.57

# 6TiPureR-350 4.10 9.00 2.20

Total density / total 1.47 100 68.23

In this example, component # 10 (Amplify EA 100 ethylene ethyl acrylate (EEA)) ensures good adhesion of a wide variety of coatings. Specifically designed for extrusion, component # 6 provides high opacity and UV stability. Component # 5 contributes to opacity and thermal stability as a filler.

The total density of 1.47 is economically not interesting. Example C.b.

Components Density [g / cm ³ ] Weight% Dry Vol%

# 11 Amplify VA 400 (193 46.00 49.57

# 5 CalcitMX-10 2.72 30.90 11.36

# 6 TiPureR-350 4.10 4.00 0.98

# 4 Q-Cel 7023 0.23 15.10 65.65

Total density / sum 0.78 1ÖÖ 127.56

By admixing hollow glass microspheres (4) with diameters in the range of 45 μm and a density of 0.22, the density is almost halved compared with example Ca. In addition, this addition also increases the flexural rigidity and improves the opacity. Here component # 11 adheres as a coating and as an EVA-based extrusion laminating adhesive on a large number of outer layers. Suppliers

# 1, # 1 a Rotoflex AG, Lebernstrasse 40, CH-2540 Grenchen

# 2 Alberto Luisoni AG, General Wille Street 201, CH-8706 Feldmeilen

# 3 idem for titanium dioxide # 4 idem for hollow glass microspheres

# 5 idem for calcium carbonate calcite

# 6 DuPont de Nemours International S.A. DuPont Titanium Technologies,

Ketenislaan 1 'Singelberg' Häven 1 548, B-9 1 30 Kallo

# 7 Lubrizol Advanced Maetrials, I nc., Chaussee de Wavre 1 945,

B- 1 1 60 Brussels

# 8 Alfa Adhesives AG, Prior to Oak 1 0, CH-81 97 Rafz

# 9 Keyser & Mackay, Badenerstrasse 587, CH-8048 Zurich

# 1 0 Dow Belgium B.V. B.A., Prins Boudewijnlaan 41, B-2650 Edegem

# 1 1 idem Fig. 2 illustrates a method for producing a multilayer material 1 according to FIG. 1 using a coating material in liquid or pasty form, for example according to one of Examples A or B. The two outer layers 1 0 and 20 are unwound as endless webs from a roll 1 1 or 21 and fed to a coating unit 1 2 or 22, where on in each case a layer 30. 1 or 30.2 from the above-described coating material in liquid or pasty form, for example, according to one of the above-mentioned examples A or B is applied. The coating units can, as shown in FIG. 2 shown rollers, but also cold nozzles in contact with 1 0 and 20 or at a distance to be (curtain coating).

Components dissolved in organic solvents, as well as any additives, can be mixed batchwise or in-line with continuous feed and homogenized before application.

In drying plants at 1 3 or 23, the two layers 30. 1 and 30.2 coating material are dried using heat (eg with hot air). If it is an aqueous-based coating material, the water is evaporated and, in the case of a solvent-based coating material, the solvent evaporated. Thereafter, the two so-coated cover layers are guided against each other and pressed together with heated roller 1 4 and counter-roller 24. As a result of the heat introduced via the roller 1 4, the adhesive containing the two layers 30. 1 or 30. 2 of the coating material is further activated, so that the two layers enter into a mutual connection and adhere to one another. The result is the layer of coating shown in FIG. material 30 with thickness d3. I n FIG. 1, the interface between the two layers 30. 1 and 30.2, from which this layer is obtained by the method of FIG. 2, indicated by a dashed line. Of course, an adhesive bond also results between the two cover layers 10, 20 and the coating material 30, wherein these are at least partially formed beforehand, in particular when the two layers 30. 1 and 30.2 dry. As a rule, this adhesion will be even greater than that between the two layers, which, as described below, is quite advantageous and can also be exploited functionally. The multilayer material 1 thus obtained is finally wound on a roll 40 in the same pass for later use. Alternatively, it could also be processed directly. The winding or the direct further processing are possible because the multi-layer material immediately after cooling to room temperature already reaches its full bond strength. The cooling can be supported and accelerated by the use of cooling rollers 1 5, 25 after the roller pair 1 4, 24th

The distance between the drying units 1 2 and 22 and the roller pair 1 4, 24 is chosen taking into account the running speeds of the two cover layers so that these and especially the two layers 30. 1 and 30.2 coating material at the time of their merger are still hot, so that only a little heat on the rollers 1 4, 24 must be additionally supplied to activate the adhesive in the coating material, which saves energy. On the other hand, the distance between the rollers 1 4, 24 and the roller 40 is dimensioned so large that the adhesive in the coating material before reaching the roller 40 has sufficient time to cool under its activation temperature. solidify again, so that the multi-layer material has the required strength to wind up. This distance can possibly be reduced by the use of the cooling rollers 1 5, 25.

The coating material 30 could be used in the method of FIG. 2 also only one-sided, i. be applied to one of the two cover layers 1 0, 20 in full layer thickness d3. It would be advantageous here that only one coating unit 1 2 or 22 and one drying station 1 2 or 22 would be required. A disadvantage would be that the drying of the double-thick layer of coating material could be carried out less effectively and, if necessary, a more intensive drying, a longer drying time by a longer drying path and / or a lower web speed would have to be accepted.

Fig. 3 illustrates a method for producing a multilayer material 1 using an extrudable coating material, for example according to one of Examples C. The outer layers 10 and 20 are again unwound as endless webs from a roll 11 or 21, but then in the gap between a cooling roll 1 6 and a pressure roller 26 merged. The coating material 30 is introduced from an extruder 17 with a slot die as a hot curtain 30.3 between the two cover layers, wherein it comes slightly earlier in contact with the cover layer 10 than with the cover layer 20. The heat present in the coating material is sufficient, together with the pressure generated by the rollers 16 and 26, to produce the desired bond between the cover layers. Through the large cooling roller 1 6 and possibly further, not shown cooling sections, the resulting multi-layer material is the first quickly cooled down to room temperature. As a result, it is guided over the take-off roll for winding at 40 or a direct further processing. In contrast to the multilayer material of FIG. 1, the multilayer material here comprises a uniform layer 30 of coating material, ie this layer of coating material is not composed of a plurality of sublayers, which may be separated again from one another, such as the layers 30.1 and 30.2. By combining a plurality of nozzles associated with one or more extruders, however, it is also possible to achieve a multi-layer or multi-layer differentiated coating material layer 30 in terms of extrusion technology.

The for the process according to FIG. The extrudable coating material used in addition to additives for coloring, mechanical and optical properties, etc. and other functional additives contains a basic portion of thermoakti- vierbarem adhesive. These components, which are not flowable at room temperature, are compounded in the extruder 17, which is preferably a twin-screw extruder, and mixed to form a homogeneous, flowable coating material with progressive increase in pressure and heat. The necessary flowability for the coating is so without water or org. Solvent reached.

An advantage of the extrusion lamination are:

The one-step process, in which all components are mixed by mostly gravimetric dosing into the extrusion twin screw as so-called compounding, which ensures the homogeneity and the consistent uniform temperature of the mixture for the uniform flow. behavior and thus helps to ensure a tight thickness tolerance of the coating. Although aqueous or solvent-containing coatings can also be mixed in thin and fed to the coating unit, this requires additional complex installations and requires considerable cleaning effort;

The high temperature of the extrusion eliminates the need for additional heat to activate the thermally activated adhesive.

By combining different nozzles from one or more extruders, it is also possible to elegantly achieve a multilayer or multi-layered coating.

The process is advantageous for tie layers to securely bond more difficult cover layers such as oriented polypropylene or for additional functional layers in line.

In comparison, extrusion laminators with one or two opposing nozzles (to coat 2 layers) are more expensive than systems that process aqueous or solvent-containing liquids. At approximately the same widths and speeds, the extrusion lamination is therefore more suitable for the production of larger quantities. For smaller quantities, the liquid coating is cheaper.

With the methods of FIG. 2 and FIG. 3, only one pass is required for producing a multilayer material 1 according to the invention. It would be too it is possible to subdivide the process into a coating and a laminating phase, wherein at the end of the coating phase coated covering layers would be wound up for intermediate storage. Only in the temporally and possibly spatially separated therefrom, possibly even by the lamination carried out by another processor, would pre-coated cover layers be joined together to form a multi-layer material according to the invention. The advantage of such a two-stage production would be that for a longer time there would be greater flexibility with regard to the effective construction of the multi-layer material and this could be better adapted to the respective requirements of the final product produced therefrom. Until their connection, the coated outer layers would be independently tradable semi-finished products. In addition, only one coating unit would be required for the coating, and only one drying unit for coating materials based on water or solvents. On the other hand, it would be disadvantageous that the substances present in the coating material as a result of drying or melting and in the processes according to FIG. 2 and 3 heat energy used for the laminating process would be lost.

Fig. FIG. 4 shows an application of a multi-layer material according to the invention, wherein a detachable card is produced as a punched product in integrated fashion. Fig. 4a shows a plan view of a section of a multilayer material 1 according to FIG. 1, which is referred to below as the print carrier 50, as it will be almost always printed in connection with the card as a ready-to-trade item. The card is designated in Fig. 4a with 5 1. In section (along I - I in FIG. 3 a), FIG. 4 b shows the punches carried out for producing the card 51 by arrows 52 and 53. The print carrier 50 is therefore distinguished from its the sides ago by the punching lines 52 and 53 each closed in itself, ie. fully punched punched, wherein the punched lines 52 and 53 are carried out substantially congruent. The outer layers 1 0 and 20 are fully punched through, while the coating material 30 is at least partially punched only so that there remains a residual strength. About this residual strength, the card 5 1 with the surrounding material of the print carrier 50 is still connected. Modern punching systems have a tolerance of more accurate +/- 5 μιτι on. If the cover layers are always to be completely punched through, the tolerance field must lie exclusively in the coating material. Two times 1 0 μιτι tolerance field results in the worst case thickness coating material minus 20 μιτι as residual strength, in the best case, with extreme compensation of both tolerance fields, thickness coating material minus 0 μιη as residual strength. For a safe punching through of the outer layers, the tolerance field should even be a few μm away from the contact line covering layer / coating material.

By applying pressure to the card 5 1, the residual thickness of the coating substance 30 can be severed along the punched lines 52/53 and the card 5 1 can be removed from the print carrier 50. Fig. 4c shows the print carrier 50 with the detached card 5 1.

The force that is required to detach the card 5 1 from the print substrate 50 should be as small as possible, but also so large that the card 5 1 during normal use of the print carrier 50 does not detach prematurely from this before their intended removal. In particular, the print carrier should be able to be handled and / or processed by machine, and in particular dere be printed in sheetfed printers with role redirection without the card 5 1 thereby dissolves. I ndem the two outer layers 1 0 and 20 are fully cut through the punching lines 52 and 53, the holding force of the card 51 is determined solely by the mentioned residual strength in the coating material 30. The respectively suitable holding forces can be set sufficiently fine to the desired value by selecting the composition of the coating material and in particular by suitably adjusting its tensile strength, including the so-called oncoming resistance after a tear. If possible, the coating substance 30 should not "stretch" when the card is released, so that the detached card has a smooth outer edge, which is determined especially by the cut edges of the two cover layers 10, 20.

In general, a length-related holding force along the two congruent punching lines 52/53 of 1 N / cm - 3 N / cm is favorable. A value in this range can easily be achieved with the coating material 30 according to the invention, even if the thickness of the coating material is 75 m or even up to 450 m, as in the example described above. In a layer of a plastic film made of polyester, as it is preferably used for at least one of the two outer layers 1 0 or 20, or a layer of paper, the required residual strength to achieve a comparable holding power by at least an order of magnitude lower and would only a few m, wherein the holding force sensitive depending on the residual strength. Due to the machine-technical tolerances such low residual strengths with the required accuracy punching technology practically impossible. At the same time punching, there would also be a risk that the opposing die cutting edges would touch and destroy each other. All that is avoided with the coating material according to the invention. The double-sided punching can be performed with a punching unit by the multi-layer material between two magnetic cylinders with two identical, but opposite punching plates is performed by. In this case, a symmetrical punching is to be ensured by adapted sheet-metal heights for forced centering of the multi-layer material in order to avoid unequal deep punching. This applies in particular to different cover layers on each side with different punching resistance. But it can also be driven on a modern system in a single pass at first only one side on a punching unit and then the other side on a subsequent punching unit in sufficient register accuracy using a web tension control with edge control of the web or even a register control of the punching lines. Punching with a laser beam is also possible with even more accurate depth control than with mechanical tools and punching units. With the coating material according to the invention, large residual intensities of at least 25 m are possible, the respective residual strength only having to be kept to within +/- 25%, which is within the common tolerance range of currently widely available punching devices. For the same reasons, within the scope of the invention, positioning tolerances of the two punching lines 52 and 53 relative to each other are also possible, ie. they do not need to be exactly congruent, which of course is preferred.

The so-called "handle" of the print carrier 50 as a whole as well as the card 5 1 is primarily determined by the total thickness D and the bending stiffness of the card. Deten multi-layer material. As already mentioned, the flexural rigidity can be varied by the choice of the composition of the coating material 30 and adjusted to the desired value. For printed cards with integrated cards or for the cards themselves, a flexural rigidity is generally sufficient which corresponds to about 70% of the bending stiffness of a stretched plastic film of the same total thickness D of a material as used for at least one of the two cover layers 10 or 20. In particular, a multi-layered material having a flexural strength would be suitable in the range of 70% of the flexural stiffness of a commercial, stretched polyester film of 1 75 m in thickness. Such a polyester film has a flexural strength between 0.04 N / 25 mm and 0.05 N / 25 mm, measured as a horizontal tensile force, which must be expended to allow a vertically clamped test piece having a free end of 25 x 25 mm to be 30 ° to bend.

Fig. 5 shows a further preferred application of a multilayer material according to the invention according to FIG. 1 for producing another print carrier 60, from two partial printing jobs, which are formed on the one hand by a section 61 of a multilayer material according to the invention and on the other hand by a paper sheet 66. As shown in FIG. 5 a, one of the two cover layers 20 along a marginal strip 62 of the multilayer material is removed together with the layer 30. 2 applied to it in a method according to FIG. 2. To remove the strip labeled 63, on the one hand, the multi-layer material is cut along 64. On the other hand, it is necessary for the removal of the strip 63 that the multilayer material along the interface between the two layers 30. 1 and 30.2 of the coating. 30 is separable. By choice of the composition of the coating material and by the process management z. B. in a method according to FIG. 2, the so-called separation value of the two layers 30. 1 and 30. 2 can be set appropriately or counter to one another. A value in the range of 2 N - 4 N / 50 mm is usually suitable.

In order for the separation to take place along the interface between the two layers 30. 1 and 30.2, this separation value must be lower than the separation value of the two layers relative to their respective cover layers 10 or 20. If the layers 30. 1. and 30.2, as in FIG. 2, are respectively coated on the cover layers 10 and 20 and only then brought into contact with one another, this will generally be the case. If a separation along an interface to one of the two cover layers is desired, this can be achieved, for example, by applying the entire coating material to only one of the cover layers, wherein the adhesion to this cover layer will generally be greater than in relation to the other cover layer. Incidentally, in order for the separation to take place by a so-called adhesion break at a certain interface, the internal cohesion of the coating substance must be higher than the release value at this interface. However, it would also be possible to provide a break of the cohesion, wherein a break between the two layers 30. 1 and 30. 2 of the coating substance could certainly also be regarded as cohesive failure in the coating material.

The structure shown in FIG. 5a with a protruding edge strip 62 is also obtained when, for example, in a method according to FIG. 2 or 3, but especially in a two-stage process with separate coating and lamination, the cover layers 1 0, 20 laterally offset from each other or different widths of cover layers used. In this case, the above-described requirements on the separability of the multilayer material would advantageously also be dispensed with.

Fig. 5b shows the paper sheet 66, which is reduced in thickness along an edge strip 67, this being done by tearing off a strip 68 corresponding to a partial layer of the paper sheet. The paper tear is indicated by a corrugation at the crack surfaces. The width of the edge strip 67 corresponds to that of the edge strip 62 and is for example 5 to 7 mm.

In Fig. 5c, the portion 61 of the multilayer material and the paper sheets 66 are joined together along their marginal strips 62 and 67, respectively, substantially coplanar with each other to the print substrate 60, which may collectively form a sheet in a conventional format such as A4 or Letter. The compound is in this case an adhesive bond, wherein the adhesive layer is the layer 30. 1 is used.

The use of this already existing layer for connecting the two partial printing substrates 61, 66 is possible if the thermoactivatable adhesive contained in the coating material can be activated more than once by application of heat and pressure. A first activation of this adhesive has already been "consumed" in the manufacture of the multilayer material as described above Most thermoactivatable adhesives, including those according to the Examples given above, but have this property, ie. they can be activated several times.

The use of the layer of coating material 30.1 as an adhesive advantageously eliminates the application of an additional adhesive for bonding the two partial printing substrates 61, 66. The adhesive contained in the layer of coating material 30.1 merely has to be compressed by pressing the two edge strips 62, 67 together to be heated. Preferably, the activation of the coating material 30. 1 takes place in the marginal strip by means of hot-air nozzles immediately before the pressing. Heated contact elements grinding or rotating are also possible, as well as newer technologies such as contact-free high-frequency fields or ultrasonic sonotrodes. This eliminates the need for more complex heating rollers. It thus suffice existing cold press rolls as they would be required even when using an additional adhesive. Except an additional adhesive is saved in this way, a commissioned work for such an additional adhesive.

In the print carrier 60 of FIG. 5c, a card 65 corresponding to the card 51 of FIG. 3 punched. 5c thus also shows an example of how the advantages of the multilayer material according to the invention for producing integrated cards can be combined with a cost-effective paper material in an arcuate print carrier, wherein it completely manages without the usual dispensing of the card and also otherwise in the overlap region of its two parts, no thickness differences, resulting in an imbalance in a stack could lead to several such print media and at any time over the entire area two-sided printable remains unlike aufgespendeten cards.

The production of the two partial pressure carriers 61 and 66, the removal of the edge strips 63 and 68, their mutual connection to the print carrier 60 and / or, the punching of the cards 51 and 65 is preferably carried out, as already the preparation of the inventive multilayer material in an endless process continuous webs. These can also be printed in the same run and / or separated by size cutting in sheets. Punching, printing and separating must be done in the register.

Instead of tearing off a strip such. As the strip 68 in Fig. 5b, the paper sheet could also be reduced by compressing the paper material along and in the width of a strip in its thickness. Such pressing has already been described in US Pat. No. 4,447,481 as part of an endless process, where a device with two press rollers for pressing is also described there. One of the two rollers is provided with a circumferential, strip-shaped elevation. Such special devices are in operations of the so-called web-finishing, which are used for the endless production of print carriers of the type of FIG. 5c are equipped, but usually not available. Standard there are devices for punching with magnetic and counter-cylinder. On the magnetic cylinder punching plates are required magnetically fixed, which are provided with narrow punching blades. The stamped sheets typically have a bottom thickness of about 1 μιτι and extend only over a partial circumference of the magnetic cylinder. Closed rings can be contrasted with the magnetic cylinder not easy to assemble and disassemble. After all, it would be conceivable to use an expansion shaft instead of the magnetic cylinder in the existing punching devices, on which endless pressing rings could be mounted, but then the magnetic cylinder would need to be exchanged as needed, consuming such an expansion shaft. Sufficiently precise expansion waves are also very expensive components.

By the following, individually and / or in various combinations with each other independently inventive measures, the existing devices with magnetic and counter-cylinder, however, also for strip-shaped pressing of continuous paper webs can be used:

As for punching magnetically fixable plates are used on the magnetic cylinder and preferably only one metal sheet per magnetic cylinder, which can be bent on the magnetic cylinder to a substantially closed, yet still open ring.

Instead of narrow burrs, these sheets are provided with a raised pressing strip of substantially greater width.

For the plates in total is z. B. a width of 50 - 1 00 mm suitable.

In order to avoid excessive local loading of the magnetic cylinder due to compression in the area of the raised pressing strip, the pressing forces occurring are distributed over a larger area by the plates be provided with a relation to the punching plates thicker bottom of 200 - 300 μιτι.

In a conventional gap of 580 μιτι between the magnet and the counter-cylinder, the total thickness of the sheet in the region of the press strip is selected so that the compressibility of the respective endless paper web is fully utilized. For example, a 1 40 g heavy form paper of 1 80 μιη thickness can be pressed with a 0.550 mm high press plate to 1 20 μιη.

The lateral flanks of the pressing strip are preferably inclined relative to the bottom of the sheet between 70 ° - 90 °.

The lateral edges of the pressing strip are further preferably rounded with a radius of approximately 0, 1 - 0, 2 mm, in order to avoid a cutting into the paper in the pressing edge, which becomes critical with increasing edge steepness.

The flat width of the press strip may correspond to the width, as indicated above for the edge strips 62 and 76 and the strips 62 and 68 and may be corresponding to 5 - 7 mm with the addition of z. B. 2 mm, so that the edge of the paper web is pressed in each case.

With the above dimensions, however, the sheets are so stiff that they can not bend so easily as usual punching sheets from a flat position and / or not in curved form with their ends Stick more firmly enough on the magnetic cylinder, so that in particular the ends of this protrude. To solve this problem, the sheets are therefore made of spring steel or sheets that behave similarly, manufactured and pre-bent on an even smaller radius than the radius of the magnetic cylinder so that they need to be bent slightly for mounting on the magnetic cylinder. The pre-bend should be more pronounced in particular at the ends of the sheets than the rest of the circumference, so that they do not stand out from the U mfang. An endless press plate also requires a slightly higher reduction factor than a continuous punched sheet due to the larger raised surface.

I ndem the sheets on the magnetic cylinder form only a substantially closed and thus still open ring, resulting inevitably a gap between their transverse edges, which can be kept smaller than 0, 2 mm. In order to avoid that this gap on the entire width of the embossing plate simultaneously causes a shock, the transverse edges of the sheets are preferably oblique, in particular preferably cut obliquely by 30 °. The gap is thereby distributed over a certain unwinding length of the embossing plates. It thus takes a practically continuous pressing. In the worst case diagonal to the running direction, after every full sheet length, there is an interruption in the pressing smaller than the mentioned 0.2 mm, which does not significantly reduce the effect of the thinning of the material, however, more than this break outside the final cut end format (in the waste) can be placed there and then visually no longer bothers. The manufacture of the print carrier 60 of FIG. In the context of the prescribed, two-stage process, 5c could also be carried out together with the lamination of two previously coated cover layers. It would be necessary to supply two pre-coated cover layers and one paper web to the laminating unit. Optionally, this can be done in the same run previously, but possibly also on the laminating itself, the pressing of the paper web to the coplanar connection of the two partial pressure carrier.

Fig. FIG. 6 shows, under a) in section and under b) in plan view, a metal sheet 70 with the above features, wherein the raised pressure strip is denoted by 7 1. The lateral flanks of the pressure strip 7 1 are inclined relative to the ground at a flank angle α of 70 °, but also work perfectly at 90 ° solely by the pressure distribution in the direction of the thicker ground level. The edges of the pressure strip 71 are slightly rounded (radius R). The 30 ° section of the transverse edges of the press plate draws each point of the transverse edge by the angling of the impact in the direction of travel to the magnetic cylinder. This effect is approximately proportional to this angle, an increase in the angle increases the positive effect, but makes production and handling in assembly difficult.

FIGS. 7, 8 and 9 show examples of modified embodiments of the multilayer material 1 of FIG. 1 .

In the multilayer material of FIG. 7 is applied to the cover layer 1 0 a print layer 81, which is responsible for good adhesion of ink or toner the cover layer 1 0 ensures. The layer 81 could alternatively or additionally also cause matting of the surface, be heat-reflecting and / or have membrane properties. By admixing, for example, the components # 3, # 4, # 5 and / or # 6 used in the examples, the opacity of the multilayer material could be increased. A corresponding layer could also be provided on the cover layer 20.

In the multilayer material of FIG. 8, an adhesive layer 82 is present between the cover layer 10 and the coating material 30, which provides a stronger bond between the cover layer 10 and the coating material 30 and could be used, for example, if the entire coating material is only applied to the cover layer 20. A corresponding layer could also be provided between the cover layer 20 and the coating material 30 or between two layers of coating material. It can be z. B. a thermoplastic activated adhesive layer or a pressure sensitive adhesive layer (PSA) act.

In the multi-layer material 1 of FIG. 9 is between the two layers 30. 1 and 30.2 of the coating material additionally present a functional layer 83, the functionality of which may be of various types, such as heat-conducting or heat-insulating or electrically insulating or conductive, heat-resistant, flame retardant, antibacterial, liquids or perfumes containing, receiving or donating and / or chemically reactive. The layer 83 does not necessarily have a single layer and also not necessarily arranged between the two layers 30. 1 and 30. 2 a. Corresponding functionalities could by suitable admixtures and the coating material itself or have a layer of the coating material, in which case the layer 83 could possibly be omitted.

As mentioned, the production and processing of the multi-layer material according to the invention is preferably carried out in continuous processes, wherein, for example, punches for the production of stamped products such as the card 65 in the printing substrate 60 of FIG. 5c are made in the pass through a punching tool. In addition, the punched pieces thus produced must then be provided in the passage through another tool often still with a feature that requires positioning within predetermined limits on them. This positioning can be substantially facilitated if, with the punching tool in the multi-layer material, in each case tolerance-free arranged markings are punched free relative to the punched pieces, which are used in the subsequent processing of the punched pieces for the introduction of said feature. The markings may in particular be free-punched edges, for example by separating toothed edge strips on an endless web. Together with the punching of the diecuts, a continuous web could also be separated into bows, in which case the outer bow edges could be used as marking edges. The feature to be controlled may be, for example, an encoding on a magnetic strip extending on the diecuts, the attachment of a chip card module, the application of a layer of material and / or a mobile imprint. NAME LIST

I multi-layer material 10 cover layer

I I roll cover layer 10

12 position coating unit

13 position drying plant

14 roller

15 chill roll

16 chill roll

17 extruders

18 pick-up roller

20 topcoat

21 roll cover layer20

22 position coating unit Position drying unit roller

chill roll

pressure roller

Coating material Layer Coating material Layer Coating material Roll Multilayer material Print carrier

map

Arrows stamping line

Multi-layer material print carrier

edge strips

detached stripes Position incision

map

sheet of paper

edge strips

detached stripes

Sheet metal for pressing

Pressstreifenerhö

Tip on the plate

Recess on the sheet

Print layer

adhesive layer

functional layer

Print carrier / roll

Print carrier sheets

Continuous web / paper web / roll

Continuous web / film web / multilayer material web / roll 300 endless track / roller

1 30 edge stripes

1 1 0 Unwinding adhesive strips

1 20 Roll-up tape and partial layer

320 self-adhesive layer

3 1 0 Film web

330 cover

340 peeling position

350 roll up cover

41 0 cards

420 notches

I - IV stations

D total thickness of the multilayer material d 1 thickness of the cover layer 1 0

d2 thickness of the cover layer 20

d3 thickness of the coating material layer R radius

Claims

claims

1 . Method for producing a coplanar (400, 400 ') assembled from at least two flat partial printing carrier webs, wherein a multilayer material with two cover layers (200, 300) and a formless coating material (320) which binds to one another and is used for this purpose are used for one of the partial printing carrier webs wherein, along an edge strip, one partial print carrier web has a smaller thickness than its thickness, the other partial print carrier web being a paper web (100) having a smaller thickness along a marginal strip (1 30) than its thickness , And wherein the two Teilildruckträgerbah NEN along its two edge strips in a single pass of the webs are coplanar with each other, characterized in that in the same pass also the two outer layers in the form of outer layers are laminated by lamination to a partial printing carrier web, un d that the smaller thickness of this partial printing carrier web along its edge strip is obtained by using cover layer webs with different widths or that the cover layer webs are laterally offset from each other with each other.

2. procedural ren according to claim 1, characterized in that for the production of a partial printing carrier web cover sheet tracks are used, of which we- at least one pre-coated in a preceding, temporally and / or spatially separated coating phase with informal coating material and was wound up for intermediate storage.

3. procedural ren according to one of claims 1 or 2, characterized in that are used to produce a partial printing carrier web cover sheet webs, of which at least one is an at least durchschimmernde, stretched plastic film or has.

4. procedural ren according to claim 3, characterized in that the one partial printing carrier web is produced with a total thickness of 1 00 - 800 m, wherein the informal coating material contributes to this total thickness at least 1 8%, but preferably at least 30%, and wherein the in The adhesive contained in the coating material can be activated at least once with heat and pressure, but is not tacky at room temperature.

5. procedural ren according to any one of claims 1-3, characterized in that are used to produce a partial printing carrier web cover sheet webs, of which at least one is also a multi-layer material web with two supporting outer layers and a formless coating material between the outer layers, wherein at least one of the two Cover layers is an at least translucent, stretched plastic film, wherein the coating material contains an adhesive, the total thickness of the multilayer material is 1 00 - 800 m, the coating material contributes to this total thickness at least 1 8%, but preferably 30%, and wherein the The adhesive contained in the coating material can be activated at least once with heat and pressure, but is not tacky at room temperature.

6. procedural ren according to any one of claims 1-5, characterized in that for the production of a partial printing carrier web cover sheets are used, of which the other is an at least durchschimmernde, stretched plastic film, a metal foil, a paper layer or a combination thereof.

7. procedural ren according to any one of claims 3 - 5, characterized in that the at least durchschimmernde, stretched plastic film is or is provided with a preferably opaque print layer.

8. procedural ren according to any one of claims 1-7, characterized in that the connection of the two partial printing carrier webs along its two edge strips and the connection of the two cover sheet webs is carried out to a partial printing carrier web on the same laminating.

9. A method according to any one of claims 1-8 characterized in that in the same pass also the edge strip of the paper web, along which the paper web (66) has a smaller thickness than its thickness in the rest, by tearing off a strip of the paper web is obtained.

1 0. procedural ren according to any one of claims 1-9, characterized in that in the same pass also the edge strip of the paper web, along which the paper web has a smaller thickness than its thickness in Ü remainder, is obtained by pressing the paper web ,

1 1. Process according to claim 1 0, characterized in that the pressing of the paper web is carried out on a device with a magnetic and a counter-cylinder, wherein on the magnetic cylinder a sheet with an elevated Pressing strip is magnetically fixed, which forms a substantially closed, yet still open ring on the magnetic cylinder.

1 2. The method according to one of claims 1 - 1 1, characterized in that in the same pass the said webs and / or the printing carrier produced therefrom are provided with a punching tool with punched and that relative to these stamped with mi punching tool each arranged tolerance-free Marks are punched, which can be used in the subsequent processing of the punched in passing through another tool for controlling a einzusteuernden feature.

1 3. The method according to claim 1 2, characterized in that it is the punched to integrated maps and the markings around punched edges.

14 procedural ren according to any one of claims 1 1 or 1 2, characterized in that with the punching tool together with the punching of the punched a Endlosbah n is separated into sheets.

1 5. The method according to any one of claims 1 or 1 4, characterized in that a formless coating material is used, which is less dense, stiffer, opaque, white, better or poorer heat-conducting, electrically insulating or conductive by at least one admixture to the adhesive, Electromagnetic and / or high (HF) and / or low-frequency (NF) electromagnetic fields better absorbing and thus the electromagnetic radiation background better shielding, heat-resistant, thermosetting, flame retardant, antibacterial, containing liquids or fragrances, receiving or donating, chemically more reactive and / or phosphorescent or with daylight or UV light loadable and thus luminescent in the dark.