WO2006099971A2 - Mehrlagiges sicherheitspapier - Google Patents
Mehrlagiges sicherheitspapier Download PDFInfo
- Publication number
- WO2006099971A2 WO2006099971A2 PCT/EP2006/002333 EP2006002333W WO2006099971A2 WO 2006099971 A2 WO2006099971 A2 WO 2006099971A2 EP 2006002333 W EP2006002333 W EP 2006002333W WO 2006099971 A2 WO2006099971 A2 WO 2006099971A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paper
- security
- layer
- web
- paper web
- Prior art date
Links
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/44—Watermarking devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
- D21F11/08—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/42—Ribbons or strips
Definitions
- the invention relates to multilayer security paper for the production of security or value documents, such as banknotes, ID cards and the like.
- Security papers or documents of value are often provided with security features, such as watermarks, embedded security threads and the like, which make it possible to check the authenticity of the security paper or value document and at the same time serve as protection against unauthorized reproduction.
- the term “security paper” here refers to the unprinted paper, which is usually present in quasi-endless form and is processed further at a later point in time. "Document of value” is a document which has been completed for its intended use.
- valuable documents are in particular banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other documents which are forgery-prone, such as passports and other identity documents, as well as product security elements such as labels, seals, packaging and the like .
- the simplified term “security paper” or “value document” below includes all such documents and product security means.
- authenticity features have proven themselves that can only be introduced into the security paper during production.
- a first type of authenticity features such as watermarks, security threads, chemically reactive additives or mottling fibers, serve for the visual authentication by a human. Although these features are visually recognizable, they guarantee a high degree of safety, since the paper equipped with such authenticity features can only be produced with complex machines to which a counterfeiter has no access and whose purchase or replica is not economically worthwhile for counterfeiting purposes.
- security papers have for a long time also been provided with authenticity features of a second type, which can only be detected by means of special detection devices.
- a forger additionally has the problem of having to identify the presence of a feature and its special properties.
- a security thread for embedding in banknotes or other value documents may have a visually recognizable negative light in transmitted light and additionally a machine-readable magnetic code.
- the present invention seeks to propose a security paper of the type mentioned, which has a high security against counterfeiting.
- Multi-ply security paper is a security paper combined from several layers, whereby the merging of the layers can take place already with the papermaking or only after the papermaking.
- the security paper can be equipped with one or more authenticity features.
- Foreign elements can be applied to the security paper, visually or machine-controllable measures can be taken on the individual layers forming the multilayer security paper, and intercalations can be introduced between two or more of the individual layers.
- the multilayer security paper contains at least one layer of paper.
- the further layers can likewise be made of paper, but also of other materials, for example by plastic films.
- the foreign elements can be applied to the security paper both during and after papermaking in endless form, for example as strips or tapes, or in the form of label-shaped individual elements, for example by gluing.
- individual elements such as fibers, planchettes, pigments, imprints and the like, or continuous materials such as security threads, security tapes, nets, meshes, fabric material or film webs may be considered.
- the individual layers may have a total or even only partially different thickness or different composition. The latter can be achieved, for example, by additives in the production of the individual layers or by formation of the individual layers of different fibers.
- the individual layers can have a different surface structure. These include, for example, authenticity features, such as through openings, watermarks or interruptions, in one or more of the individual layers. Subsequent deformation of the paper layers, for example with the aid of a dandy cutter, is also possible.
- authenticity features can be produced on the one hand with the measures just mentioned, ie in particular by varying the thickness, the composition or the surface structure of the paper layers. Additional possibilities arise when different materials, such as paper and plastic films, are combined. One, several, or even all of the different material layers can then be provided with authenticity features, wherein a particularly high protection against counterfeiting is achieved when the authenticity features of different layers enter into a functional correlation with each other.
- the information present in different layers may be complementary to a total information, or the effect of an authenticity feature of one layer may presuppose the presence of another feature in another layer.
- an endless security element which is freely accessible on at least one side of the paper layer, is introduced into a first paper layer.
- the first paper layer is covered on the freely accessible side of the security element by a second paper layer, which has one or more openings in the region of the security element.
- the extent of the opening (s) perpendicular to the running direction of the endless security element is smaller than its width so that it does not extend beyond the security element.
- the endless security element can be formed in particular by a security thread or a wide security band.
- Security threads have a width of 2 mm or less, usually from about 1 to.
- Wider endless security elements are referred to as security bands in the context of this description. In particular, they have a width of 4 mm to 20 mm, sometimes even up to 30 mm.
- the wide security tapes typically divide the first paper layer into two parts so that they are visible and accessible on both sides of the paper layer.
- a characteristic deckle edge is advantageously formed in the edge regions of the security band, which is not reproduce by cutting or punching.
- the security element may also be fastened with an adhesive in the first paper layer.
- the endless security element can moreover be equipped with optically variable effects, in particular with a diffraction structure, a hologram, a color shift effect or another interference layer effect. It can also be provided with a print image, in particular a positive or negative signature.
- the opening of the second paper layer may, for example, be provided in the form of a strip-shaped interruption extending along the endless security element. Such an interruption can be closed during production with a rupturable release strip, so that an initially closed security paper is formed into which an opening can be made at a later time. Any other hole shapes are eligible for the openings, such as a regular sequence of round or square interruptions.
- the openings in the second paper layer are filled with a transparent material, in particular a polyurethane adhesive.
- the first paper layer contains a watermark and the second paper layer in the region of the watermark contains an interruption in which the watermark clearly emerges.
- the first paper layer has a grammage of 60 to 80 g / m 2 , in particular of 65 to 70 g / m 2
- the second paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2
- the conditions are reversed, and the first paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2
- the second paper layer has a grammage of 60 to 80 g / m 2 , in particular from 65 to 70 g / m 2 .
- a first paper web is formed, and an endless security element is introduced into the first paper web such that the endless security element is freely accessible at least on one side of the paper web,
- a second paper web is formed, which is brought together in the still wet state with the first paper web and firmly connected so that it covers the freely accessible side of the security element, - In which one or more openings are introduced into the second paper web, which come to rest after merging with the first paper web in the region of the endless security element.
- the production of the first and / or second paper web is preferably carried out in a DC round wire paper machine.
- the first and / or second paper web can be produced in a short former in which the paper pulp is sprayed onto a round screen.
- the second paper web is produced on a round screen, the holes of which are closed in partial areas.
- the sheet formation is suppressed in these sub-areas and there are fiber-free areas, so openings, in the second paper web.
- the closing of the holes can be done with advantage by applying, in particular sticking a cover strip, by partial printing of the screen with a lacquer layer or by a voltage applied from the inside of the lateral surface of the round cover ring. It is also possible to run the endless security element in the papermaking on the round screen so that it closes the holes of the round screen at the accumulated places.
- a generic security paper at least two paper layers produced with different fibers are combined.
- the at least two paper layers can be formed in particular from fibers of different colors, different lengths or fibers with different feature additions.
- the paper layers produced with different fibers are formed with mutually complementary interruptions - S -
- This combination paper layer has no greater thickness than the individual layers, since the contributions of the individual layers to the combination paper layer are arranged in each case in interruptions of the other paper layers.
- the paper layers consist of two complementary stripe patterns, so that the combination paper layer results in an alternating sequence of strips of the two individual paper layers.
- the at least two paper layers produced with different fibers have interruptions in the form of vertical or horizontal strips and are arranged one above the other in the security paper, so that they form a checkerboard pattern.
- a first paper containing a watermark is formed from short fibers and combined with a second, thinner paper layer made of long fibers to increase the tear strength.
- the first paper layer of short fibers is even sandwiched between two thinner paper layers with long fibers. This combines the high tear strength of the long-fiber layer (s) with the pronounced watermark effect of the short-fiber layer.
- a first paper layer containing a watermark is covered by a second paper layer which is formed in the region of the watermark with transparent fibers and outside the water marking region with ordinary, non-transparent fibers. The watermark is then protected by the transparent fiber area and yet clearly visible.
- the at least two paper layers produced with different fibers can be combined with further full-surface or interrupted paper layers. They can also be combined with a security element, which is preferably visible through the paper layers at least in a partial area, for example an opening.
- Another aspect of the invention relates to a method for producing a security paper, in which
- a first paper web is formed in a first wet end of a paper machine and optionally provided with individualization features, such as an opening or a watermark,
- a second paper web is formed in a second wet end of a paper machine
- the second paper web is brought together via a removal belt with the first paper web and firmly connected, and in which
- the suction device may be a perforated suction roll or a suction tube.
- the suction tube can suck either pulsed or continuously.
- the openings of the suction roll or the suction pipe can be shaped as desired, so that more complicated hole shapes, such as stars, alphanumeric characters, etc., can be generated.
- the fibers of the second paper web are only partially removed by the suction device in order to produce regions of lesser layer thickness in the second paper web.
- the areas of reduced layer thickness of the second paper web can be in the register to watermark areas of the first paper web, for example, in order to make them bright.
- the fibers of the second paper web are completely removed by the suction device in order to produce openings in the second paper web.
- These openings are preferably generated in register with openings of the first paper web.
- the openings of the first and second paper web can thus complement each other to a see-through hole.
- the openings of the first paper web are produced by so-called E-types on a round screen, while the opening in the second paper web is formed as a continuous strip with the continuously sucking suction tube and the E-type opening and strip opening come to lie one above the other.
- the width of the security element can correspond to the width of the openings, but also be smaller or larger.
- the suction device is arranged between the second and the first wet end, so that it sucks the paper fibers of the second paper web on their way to the first paper web.
- the suction device after the merging point of the first and second paper web.
- the paper fibers of the second paper web are sem case with advantage through openings of the first paper web sucks therethrough.
- Said register-containing openings of the two paper webs are advantageously combined with a security element whose respective security features are then visible from both sides of the security paper.
- a security element is in particular a security thread, preferably a two-sided security thread, such as a double hologram security thread, a dual color layer security thread or the like into consideration.
- the security element can also have an element in the paper web running direction which is in register with the document to be produced. The security element is then introduced in the longitudinal register, which can be done for security threads, for example by means of a direct thread drive.
- the suction device may be appropriate to form in a trapezoidal or triangular shape in order to obtain a sufficiently large contact surface with the second paper web.
- a suction device which is designed as a composite of several segment plates Absaugrad.
- a suction device may generally be used in papermaking to create thin spots or openings in a wet paper web.
- the suction device is formed by an assembled from a plurality of segment plates Absaugrad, wherein as segment plates one or more intermediate plates are provided which form the removal openings for sucking a substance / water mixture from the wet paper web, and two on both sides of the intermediate plates arranged cover plates, the serve the boundary.
- At least a portion of the segment plates expediently has channels connected to the removal openings for sucking off the substance / water mixture.
- the areas of the intermediate plates adjoining the removal openings are advantageously recessed.
- a stationary vacuum device which grinds in operation on the surface of at least one of the cover plates of the rotating Absaugrads and which is connected to the exhaustion of the substance / water mixture via one of the channels with each standing in contact with the paper web removal opening.
- the suction device is coated with a flexible plastic mask which has recesses in the form of patterns, characters or codes in the region of the removal openings.
- These recesses can be made very fine and be formed, for example, in the form of alphanumeric characters or finely engraved graphic symbols. They can also form continuous or registered patterns.
- the invention contains a method for producing a security paper, in which a wet end of a paper piermaschine on a round screen formed a paper web and is lifted by means of a carrier tape from the round screen, and in which the lifting of the paper web is supported by a arranged in close proximity to the round screen and with short distance to the carrier tape suction device.
- a negative pressure is preferably generated which is at least 0.1 bar, more preferably about 0.2 bar, greater than the negative pressure in the interior of the round screen.
- the suction device is formed by a rotatable suction roll, which is preferably driven in register-synchronism with the round screen of the wet end.
- the suction roll on a perforated roll shell, which is surrounded by a perforated blanket and a felt defined permeability.
- the method described is particularly suitable for those production variants in which a watermark is introduced into the paper web on the round screen. Because of the different paper thickness, the distance of the suction device to the round screen is then adjusted appropriately in the region of the watermark to the local paper thickness.
- the invention also includes a papermaking screen in a papermaking machine having ridges and depressions for producing watermark areas, and having patterning in the pits to facilitate paper removal from the screen.
- the elevations and depressions for generating Balkenwasser Lake are arranged in a bar-shaped side by side.
- the structurings are particularly advantageously formed by grooves, in particular by grooves milled into the recesses.
- the patterning in the recesses results in a more regular deposition of stock on the screen, an improved decrease and thus a more uniform brightness in the watermark areas of the produced paper web.
- a further aspect of the invention comprises a method for producing a passage opening in a multilayer security paper, in which
- a first paper web is formed and provided with an opening
- the merged first and second paper web are guided between a first and a second web-side carrier felt, and
- the second web-side carrier felt is lifted from the merged paper web to take in the region of the opening of the first paper web a portion of the second paper web and thereby to produce a passage opening in the merged paper web.
- the second-web-side carrier felt is expediently acted upon by a suction pressure Sa and the first-web-side carrier felt in the regions outside the opening is subjected to a suction pressure Si, which is greater than S2 is so that the second paper web can not be lifted in these areas.
- a suction pressure Si which is greater than S2 is so that the second paper web can not be lifted in these areas.
- no suction pressure is applied to the first web-side felt in the region of the opening, which can be achieved, for example, by pulsed suction.
- the first-track-side carrier felt in the region of the opening is even subjected to a counter-blowing pressure, in particular an air jet, water jet or a laser beam, in order to assist the lifting off of the second paper web in this area.
- a luminescent substance and possibly another feature substance are homogeneously distributed in the volume of the paper layer, this first paper layer having at least two different paper thicknesses at least in a partial region.
- the different paper thickness is reflected in the amount of luminescent substance or luminescent radiation present, ie in areas with thicker paper there is more luminescent substance per unit area than in areas with thinner paper, consequently Also, the intensity of the luminescent radiation in areas with thicker paper is higher than in areas with thinner paper.
- Suitable luminescent substances are all fluorescent and phosphorescent substances which emit light in the visible, UV and IR spectral range after appropriate excitation.
- luminescent substances are used which emit outside the visible spectral range.
- substances which are disclosed in EP 0053183 B and EP 0 052 624 B can be used as luminescent substances.
- the concentration of a luminescent substance based on the weight of the finished sized paper usually ranges from 0.05% by weight to 5% by weight, preferably from 0.1% by weight to 1% by weight.
- the luminescent substance is preferably transparent in the visual spectral range, so that it is not readily visually recognizable.
- the range of available luminescent substances and their optically verifiable properties is very large, so that a potential fraudster, even if he knows that a luminescent substance is present, a complex
- Luminescent substances which are not obtainable in free trade and are particularly suitable for machine inspection are preferred Have properties, and are detectable only with special tuned thereto on measuring instruments.
- luminescent substances with anti-Stokes or quasi-resonant behavior can be used.
- luminescent substances in which both excitation and emission spectrum are outside the visible range are used.
- the luminescent substances are incorporated by, for example, in papermaking e.g. the pulp are added and homogeneously distributed by stirring the paper pulp.
- the luminescent substance used can be combined with one or more further luminescent substances but also with one or more further feature substances.
- all materials which can be incorporated into the pulp during papermaking and which can be recognized by machine, ie have a physically or chemically measurable or detectable effect are suitable as feature substances.
- substances with electrical and / or magnetic properties are suitable, e.g. electrically conductive pigments, such as metal particles, electrically conductive polymers, magnetizable iron oxide or iron particles, paramagnetic particles, such as e.g. made of Ni or Mn.
- concentration of a feature substance based on the weight of the finished sized paper is usually about 1 wt .-%.
- the feature substances can be processed in papermaking, such as paper fillers. Processes for this are known to the person skilled in the art.
- the first paper layer has thickness modulations in at least one subarea, ie areas in which the security paper is subjected to is different thick. Every conceivable form is possible. In the simplest case, an area with two different thicknesses is present in the paper layer.
- the different paper thicknesses can be produced by different techniques. It is also possible to incorporate windows into the paper layer, ie areas having a paper thickness of zero.
- the thickness modulation is realized in the form of a watermark.
- the watermark can be incorporated into the paper layer during the scooping process or subsequently embossed.
- the thickness modulation can have any conceivable shape.
- the watermark represents a barcode.
- the watermark can also be formed as a two-dimensional area code in the manner of a chessboard. But also complicated watermarks, z. As portraits, with many different paper thicknesses, which can be seen in the finished paper as different shades of gray, can be prepared and used according to the invention.
- a barcode watermark in the form of a bar code in the form of a bar code, one can make use of the production process for security paper with window threads, as described for example in EP 059056 A. This process is performed on a paper machine with a round screen. On a paper machine with a wire screen, on the other hand, the beam watermark is imprinted into the paper web via the dandy cutter after papermaking, resulting in the desired thickness modulations.
- the paper of the first paper layer usually has a weight of 65 to 120 g / m 2 , a density of 500 to 1000 kg / m 3 and a thickness of 50 to 200 microns. With an average paper thickness of 100 .mu.m, the thickness of the areas appearing lighter in transmitted light is about 85 .mu.m or less, and the Thickness of the areas appearing darker in transmitted light about 115 ⁇ m or more.
- the paper of the first paper layer preferably has a weight of 70 g / m 2 , an average thickness of 100 ⁇ m and a density of 700 kg / m 3 .
- the light-emitting areas which appear brighter in this case have a thickness of about 70 ⁇ m.
- the differences in thickness in the paper are visually imperceptible. This is achieved by keeping the thickness differences in the paper very small.
- the minimum or maximum paper thickness in the watermark is 1 to 10%, preferably 1 to 5%, below or above the average paper thickness.
- Paper thickness modulations e.g. are in the range of 105 .mu.m to 115 .mu.m, are no longer visible in the transmitted light with the naked eye as watermarks, but with a sensor very well detectable.
- camouflage is to overprint the areas of different paper thicknesses.
- printing inks are used which do not absorb in the spectral regions in which the feature substance is excited and emitted, i. E. are transparent.
- the first layer comprises incorporated thickness modulations and at least one luminescent substance which can optionally be combined with further luminescent substances.
- the second layer may comprise no luminescent substance, the same luminescent substance as the first layer, a luminescent substance different from the first layer or else combinations of different luminescent substances. The same applies to any still existing paper layers.
- the paper thickness variations of the first and second layers or optionally also further layers can be coordinated so that the layers complement each other to form a multilayer security paper of constant thickness.
- one or more further feature substances can be incorporated independently of one another into the individual layers.
- the feature substances are, as described above, machine-readable substances, preferably with electrical and / or magnetic properties.
- the invention offers the advantage that a security paper, although only provided with a luminescent substance, can be produced by a simple variation of the paper thickness with a plurality of codes.
- a security paper although only provided with a luminescent substance, can be produced by a simple variation of the paper thickness with a plurality of codes.
- the number of different possible variations can be further increased.
- the production of the coded security paper is particularly simple in that the introduction of the luminescent and optionally feature substances as well as the paper thickness modulation takes place in one step in papermaking and no additional devices are required which have to be integrated into the paper machine. In this way, different currencies, denominations of a currency or even tax stamps, etc. can be cost-effectively provided with a machine-readable encoding.
- the coding is made invisible, ie visually not recognizable, but still easily measured by machine. Due to the integrated luminescence and paper volume Feature substances is also a subsequent change of the authenticity mark not possible without destroying the paper.
- a method for checking the authenticity of a security paper is provided.
- the luminescent, electrical and / or magnetic properties of the security paper are measured by means of a sensor, resulting in very specific signal intensities as a function of the concentration of the luminescent or the feature substance and the paper thickness.
- the signal intensity is influenced as follows: the higher the concentration (amount of a substance per unit volume) of the luminescent or feature substance in the paper or the thicker the paper is at a certain point, the higher the intensity of the measurement signal.
- the paper appears thinner at the points appearing brighter in transmitted light, and thicker at the darker points in relation to the normal paper thickness. Consequently, the thickness modulation in the paper results in a modulation of the amount of luminescent substance. Accordingly, the signal intensity also varies.
- the measurement is carried out by means of a hand-held sensor which responds to the different luminescent or feature substances.
- FIG. 2 is a schematic representation of a paper machine with a rotary screen paper machine and a short shaper.
- FIG. 3 shows the layer structure of a security paper according to an embodiment of the invention in cross-section
- FIG. 4 shows in (a) the layer structure of a security paper according to another exemplary embodiment of the invention in cross-section and in (b) and (c) a plan view on the front or back side of the security paper,
- Fig. 8 is a round screen as in Fig. 7 (a) with a running inside
- 21 and 22 each show a portion of a paper machine for producing a multilayer security paper according to the invention
- FIG. 23 shows the suction bellows of FIG. 22 in cross section
- 24 shows in (a) a schematic representation of a sieve for the production of Balkenwasser Lake and in (b) a cross section through the straightened off paper in the watermark area, 25 shows an intermediate stage in papermaking for illustrating a further possibility of producing a passage opening in a multilayer security paper,
- FIG. 26 shows a document of value from security paper according to the invention according to a further exemplary embodiment of the invention
- FIG. 30 shows a measurement signal during the authenticity check, namely the intensity I as a function of the measuring location
- FIG. 31 shows a schematic representation of a paper machine with suction devices according to the invention
- FIG. 32 shows a security paper according to the invention, in (a) in plan view and in (b) in cross section, FIG.
- FIG. 35 a cross-sectional view of another security paper according to the invention
- Fig. 36 shows an embodiment of a in the paper machine of
- 31 usable suction device which is particularly suitable for confined spaces
- 37 is a detail of a side view of a Absaugrads according to another embodiment of the invention
- Fig. 38 is a plan view of a Absaugrad with respect to FIG. 37 slightly differently designed removal openings after another
- Fig. 1 shows a schematic representation of a Doppelrundsieb-paper machine 10, as it is used in the production of security paper.
- the paper machine 10 includes two rotary screen paper machines 12 and 14, which communicate with each other via a pick-up felt 16.
- a paper web 20 is formed on a round screen 18, in which a security element, here a wide liquid-impermeable security tape 22, is embedded.
- the security belt 22 runs on bumps 26 of the round screen 18 before it dips into the paper pulp 24 of the paper machine.
- the security band 22 may, for example, have a width of 20 mm or even 30 mm. Due to its large width, no sheet formation takes place in the areas in which the liquid-impermeable security tape 22 rests on the protuberances 26 of the first paper wire 18, so that the security tape 22 divides the first paper web 20 into two parts. At the edges of the security band 22 forms a characteristic deckle edge.
- a second, homogeneous paper web 30 is produced in parallel thereto, removed from the round wire 34 by means of the pick-up felt 16 and guided to the first paper machine 12, where it is connected to the first paper web 20 in the region of the pressure roller 36.
- the first - paper web 20 with your enclosed security tape 22 is covered over the entire surface of the homogeneous second paper web 30.
- the interconnected paper webs 38 are then fed to other processing stations, such as calenders, sizing and the like.
- the second paper web 30 can, as shown in Fig. 2, with a
- ком ⁇ онент 40 are generated in which the paper pulp is sprayed with a headbox 42 on the surface of a round screen 44. With such a short shaper, it is possible to produce particularly thin paper layers, for example with a grammage of 15 to 25 g / m 2 .
- a multi-ply security paper 50 is shown in Fig. 3 in cross-section.
- the security paper 50 includes a first paper ply 52 that is shared by a wide security tape 54 and a thinner second paper ply 56 that covers one side of the first paper ply 52.
- the first paper layer 52 is provided with a watermark and the security tape 54 has a hologram or a hologram-like diffraction structure.
- the thin second paper layer 56 serves as a reinforcement in the region of the security belt 54.
- holes can be made along the security embedded in the paper. threads that are wider than the security band.
- the second paper layer covers the first paper layer.
- an interruption 58 is introduced into the second paper layer 56, whose width or diameter 60 is smaller than the width 62 of the security tape 54.
- the interruption 58 may be formed, for example, in the form of a strip-shaped opening with a width of 60, but also in the form of individual openings of any shape.
- the dimension 60 then corresponds to the extent of the openings perpendicular to the running direction of the safety band 54.
- FIG. 4 (a) shows the security paper in cross section and FIGS. 4 (b) and 4 (c). Supervision on the front and back of the security paper.
- Fig. 5 shows a security paper 64, in which, in contrast to the embodiment of Fig. 4, not a wide security band, but a narrow security thread 66 is embedded with a width of 1.5 mm or less.
- the back sheet formation in the first paper machine 12 is not suppressed, so that the security thread 66 does not divide the first paper layer 52, but is embedded in it and freely accessible only from one side.
- the first paper layer 52 may include a watermark, additional openings or other authenticity marks.
- a wide security band may also be incorporated in the security paper of FIG. 6.
- the pores of the round screen of the second sheet forming unit are closed in partial areas. As shown in FIGS. 7 (a) and (b), this can be done by means of a net strip 70 glued onto the jacket of the round screen 44 with regions 72 covered in the form of the desired openings.
- the cover strip 70 may also be formed completely impermeable to produce a strip-shaped interruption.
- the holes of the Siebober configuration can be closed at the desired locations with a Lackaufdruck.
- a coating applied by screen printing can be easily washed out again after the job has been completed and the screen can be provided with a new coating layer for the next application.
- a covering ring 74 running on the Siebachse 46 is provided in the interior of the round sieve 44 with closed and perforated subregions which press radially outwards against the sieve jacket and thus prevent sheet formation in the closed subregions.
- interruptions 58 are generated in the second paper layer 56, which have a deckle edge that can not be adjusted by punching or cutting.
- the security thread or the security tape runs on the second sheet forming unit, for example the short former 40.
- the round screen of the second sheet forming unit can be taped in the area of the security thread or safety bands or the incoming security element can cover the round screen itself accordingly.
- the thicker first paper web can be formed in this variant with or without a continuous opening in the region of the security element.
- FIG. 9 An exemplary embodiment of a security paper 80 produced according to this production variant is shown in FIG. 9.
- the first and second paper layers 82 and 84 are shown for illustration only with different hatchings, they appear on the finished security paper 80 as a uniform paper layer in appearance.
- the security element 86 arranged in the gap of the second paper layer 84 is visible from both sides of the security paper through the interruption 88 in the first paper layer 82 and may, for example, have optically variable elements on both sides. If necessary, the security element 86 may be secured with an adhesive in the gap of the second paper ply.
- the strip-like interruption or the other generated openings of any shape can be filled with polyurethane after drying the security paper.
- FIG. 10 A modification of the multilayer security paper of FIG. 9, in which the LT nterbrechung can be exposed at any time after manufacture, is shown in Fig. 10.
- a security element 86 separating this paper layer and a strip-shaped interruption S8 in the first paper layer 82 are produced in the second paper layer 84 of the security paper.
- a release strip 90 was additionally introduced in papermaking on the back of a thin paper layer 92 has formed.
- the release strip 90 may be peeled off the finished security paper together with the paper deposit 92 like a tearing thread and leaves a subsequently inserted opening in the first paper layer 82 which releases the view of the security element 86.
- a relatively thick paper layer formed on a DC round screen, into which watermarks, apertures or security element may be incorporated, may be combined with two or more thinner paper layers formed on further forming units, in particular the short formers described above.
- These paper layers can be produced with separate sheet forming units or even produced by separate headboxes on the same Kurzformer.
- Fig. 11 shows in (a) a three-ply security paper 100 in cross-section and in (b) in plan view.
- a security strip or a wide security tape 104 is introduced in the manner described above.
- On the first pierlage 102 two different colored thin paper layers 106 and 110 are applied using two Kurzformer.
- Strip-shaped interruptions are introduced into the paper layers 106 and 110 by masking the round screens of the respective short formers.
- the round screen of the first Kurzformers is provided with vertical adhesive strips to produce strip-shaped interruptions 108 in the second paper layer 106.
- the round screen of the second Kurzformers is taped with horizontal strips, whereby strip-shaped interruptions 112 are formed in the third paper layer 110, which are perpendicular to the strip 108 of the second paper layer 106.
- the designations "horizontal” and “vertical” for the adhesive strips refer to the axis of the respective short forming sieve.
- the second paper layer 106 is colored reddish, while the first and third paper layers 104 and 110 are white.
- the reddish coloration of the second paper layer 106 shines through the thin third paper layer 110 and produces a slightly reddish appearance.
- the view of the second paper layer 106 is released, so that a more powerful red color appears there.
- the red color is absent so that these points produce a vertical white stripe pattern against a reddish background.
- Last is in the intersection areas 116 of the two Break pattern exposed the surface of the first paper layer 102.
- the interruption strip 108 which lies just above the safety strap 104, the view of the surface of the safety strap 104 is released in the crossing regions 118, so that further authenticity features can be recognizable there.
- a security paper according to another variant is shown in plan view in FIG. 12.
- a first short former produces a paper layer 122 with strip-like interruptions
- a second short former generates a complementary paper layer 124 likewise with strip-like interruptions, so that the two strip-shaped paper layers 122, 124 complement one another to form a full-surface paper layer 120.
- the paper layers 122, 124 are formed in particular from different fibers, for example from fibers of different colors, different lengths or fibers with different feature additions.
- the paper layer 120 can also be combined with a third, homogeneous paper layer or with white layers of paper or plastic.
- the security paper 130 uses paper layers of different thicknesses and with different fiber lengths.
- the middle paper ply 132 is formed on a DC short fiber screen. This paper layer 132 occupies about 2/3 of the total thickness of the security paper 130. It is provided in a partial area with a watermark 134, which is sharply contoured due to the short fibers used and appears with a pronounced watermark effect.
- the middle paper layer 132 is connected to two thinner paper layers 136, which are produced, for example, with a Kurzformer. For their production longer fibers are used, which give the multilayer structure 130 a particularly high tensile strength.
- FIG. 14 A further variant of the invention is shown in FIG. 14.
- a thicker paper layer 142 of the security paper 140 is provided with a watermark 144.
- Two short-former plies 146 and 148 which are complementary to one another, are applied to the surface of the first paper ply 142, with the first short-ply ply 146 having a strip-like interruption in the region of the watermark 144, in which the second short former plies 148 come to lie.
- the second short former layer 148 is formed with transparent fibers, in the exemplary embodiment with suitable polymer fibers, by means of which the watermark region 144 is at the same time well protected and clearly visible.
- FIG. 15 schematically shows a double-round screen system 150 constructed similarly to FIG. 1 with a first-round screen 152 and a second circular screen 154 for producing first and second paper webs 156 and 158, which are brought together and joined together in the region of the pressure roller 160.
- the first-round sieve 152 is usually designed individually for the production of various security papers.
- the second paper web 158 is in the grammage range of approximately 10 to 45 g / m 2 , then it has proven to be particularly effective if the second paper web 158 is produced homogeneously, that is to say with a velin character then the second round sieve 154 can be made homogeneous. In particular, in this case eliminates the need / the second round sieve 154 in each case to adapt to the individual design of the first-round sieve 152. This makes it possible to optimize the technical structure to a stable and maintenance-free production of precisely this vellum paper of low grammage. A project-individual design of Zweitrundsiebs 154 is then only with considerable effort or not possible.
- an individualization of the second paper web is desired. If, for example, an opening of the paper to the second round sieve side takes place in addition to an opening of the first pulp screen side and this opening takes place in the wet end, the second round sieve 154 must generally be individualized. Earlier, possibilities were already given to achieve this individualization by partially closing the holes of the second round sieve. These options are particularly useful when the Zweitrundsiebö réelle in paper web running direction without any registration can be placed differently on each document produced.
- the circumference of the second round sieve must be adapted to the first round sieve in the procedure described above and be operated in register and rotational speed in accordance with the first sieve. This brings a considerable effort in the establishment of paper machines as well as the Siebher too and the screen change with it.
- the production route described below is based on the idea that the most efficient mode of operation of the second round screen in the grammatical 10 to 45 g / m 2 to leave and the individualization not on an individualization of the second round screen 154, but to achieve an individualization of the produced Velin paper web 158.
- a perforated plate roller 170 is provided in the embodiment, which is shown again separately in Fig. 16.
- the perforated plate roller 170 has a sheet-metal drum 172 in paper web width, which has holes 174 in a desired arrangement and size and which is further provided with a vacuum suction port 176.
- the perforated plate roller 170 is rotatably mounted and arranged between the second round screen 154 and the first round screen 152 at a small distance from the pick-up felt, on which the second paper web 158 is guided to the pressure roller 160.
- the circumference of the plate drum 172 corresponds to the length of a printing sheet and is thus in register with the first-round sieve 152.
- the perforated plate roller 170 is driven in register with the first-round sieve 152 in order to maintain the registration.
- FIG. 17 shows a security paper 180 having a first paper layer 182 with a watermark 184 and a second paper layer 186 applied to the first paper layer.
- the perforated plate roller 170 was in the wet end of the paper machine 150 from the second paper layer 186 in the register to the watermark 184 paper fibers removed, so that the watermark 184 is clearly visible.
- a punctual complete removal of the fibers of the second paper layer 186 is also possible, as shown in the security paper 190 of FIG. 18. In the extracted areas 188 is the. first paper layer 182 completely exposed.
- the partial or complete removal of the paper fibers of the second paper web can be combined, in particular together with openings of the first paper web, with the introduction of various security elements, such as pendulum security threads, two-sided security threads or side-by-side two-sided security elements.
- the security element can have an element in the paper web running direction which is in register with the document to be produced.
- the security element is then introduced in the longitudinal register, which can be realized for security threads, for example with a direct thread drive.
- FIG. 19 shows a security paper 200 having a plurality of inspection openings 202, which are formed by register-related openings in the first and second paper layers 204 and 206, respectively.
- the inspection openings 202 may be closed after paper production from one or both sides with a transparent or translucent film 208.
- the two-sided security thread 212 is inserted in the production of the first paper web so that it lies completely on the first felt side.
- the see through opening 214 formed by the register-containing openings of the first and second paper layers is then with the corresponding operation of the perforated plate roller 170 by the security thread 212 closed from the inside. From the two opposite sides of the security paper 210 then each of the top and bottom security features of the security thread 212 can be seen.
- the see-through opening (s) of FIGS. 19 or 20 may also be designed with a foil thread element which is inserted in the correct side and / or in the longitudinal register for the document to be produced.
- the perforated plate roller can also be arranged only after the merger point of the first and second paper web and there suck the paper fibers of the second, thinner web through openings of the first paper web.
- FIG. 21 shows a partial area of a paper machine for producing multi-ply security paper, such as the paper machine shown in FIG. 2.
- a suction cup 220 is arranged above the carrier screen 48 in order to lift the formed sheet clean of the round screen 44.
- the suction cup 220 generates for this purpose a negative pressure, which in the exemplary embodiment is 0.2 bar greater than the negative pressure in the interior of the round screen 44.
- the sheet is thereby pulled upwards by the suction cup 220 onto the carrier screen 48 and detached from the round screen 44 cleanly and without cracks.
- Such a suction cup can advantageously also be used in conjunction with a DC round screen, as illustrated with reference to FIG. 22.
- FIG. 22 FIG.
- FIG. 22 shows a partial area of a paper machine for producing multi-ply security paper, in which a suction puck 230 with a small spacing is arranged above the round screen 18.
- the floating arrangement protects the round screen 18 and the watermark types. Since the suction cup 230 is not seated on the round screen, it must be additionally driven by its own drive, with a register-synchronism with the round screen 18 is advantageous.
- the distance of the suction cup 230 to the round screen is preferably less than 1 mm at a paper thickness of about 0.7 mm.
- the Gautsche 230 is therefore raised in watermark areas of the paper in which the paper thickness can be up to 1.2 mm, so that it does not touch the screen in these areas.
- Such a suction cup 230 can be advantageously used, for example, in the production of watermarked watermark in security paper.
- a perforated bronze jacket 232 has a thickness of about 2 cm.
- the openings 234 in the bronze shell have a diameter of about 6 mm.
- the bronze jacket 232 is surrounded by a perforated rubber blanket 236 and a felt 238 of defined permeability.
- the uniformity of bar watermarks in a multilayer security paper can also be improved by using the screen 240 shown in Fig. 24 (a).
- the sieve 240 according to the invention has to produce a BaI kenwasser Lake a correspondingly arranged sequence of elevations 242 and recesses 244 on. In the recesses 244 of the screen, so the locations of greater paper thickness, grooves 246 are milled, which facilitate the paper removal from the screen 240. It has been found that the channels 244 result in a more regular deposit of stock on the wire, an improved pick-up and thus a more uniform brightness of the generated watermark marks in the raised paper web 248 ( Figure 24 (b)).
- register-containing openings in the paper layers can be produced, for example, by means of the above-described perforated plate roller. Another possibility will now be explained with reference to the illustration of FIG. 25.
- Fig. 25 shows an intermediate stage in papermaking in which a first and second paper web 250 and 252 are already merged and bonded together.
- first, thicker paper web 250 an opening 254 is introduced, the second paper web 252 is formed homogeneously and without customization.
- the two paper webs 250, 252 run on a first felt 256, which is acted upon in the areas 258 outside the opening 254 with a suction pressure Si.
- a suction pressure S2 At a second, resting on the second paper web 252 felt 260 is a suction pressure S2 upwards.
- the suction pressure S 1 is greater than the suction pressure S 2 , so that the second paper web 252 can not be lifted off the second felt 260 in the regions 258.
- a luminescent substance is homogeneously distributed in the volume of the paper layer in at least one of the paper layers and this paper layer has different paper thicknesses at least in a partial region, as illustrated below by some exemplary embodiments.
- FIG. 26 shows a value document 300 according to the invention, in this case a banknote, into which a bar watermark 302 in the form of a bar code is incorporated.
- FIG. 27 shows the value document 300 in section along the line A - A and reflects the layer structure of the security paper used.
- the security paper accordingly has a homogeneous first paper layer 304 and a second paper layer 306 connected thereto with a stepped profile.
- the elevations 308 of the second paper layer ie the areas with thicker paper, appear darker in the transmitted light
- the depressions 310 ie the areas with thinner paper, appear brighter in transmitted light.
- a luminescent substance 312 is homogeneously distributed in the second paper layer 306.
- This variant of the security paper can be produced by different methods.
- a barcode can be embossed into the second paper web, into which the luminescent substance has been homogeneously incorporated, and, on the other hand, a watermark in the form of a barcode can be introduced into the second paper web on the round screen during paper web formation.
- a feature substance or else a combination of feature substances of the abovementioned type can be introduced into the second paper web.
- FIG. 28 shows the structure of a value document according to a further exemplary embodiment of the invention in cross section.
- the document of value 320 has the same appearance in plan view as the document of value shown in FIG. 26, however, the second paper layer 306 here has openings 322 through it, and the first paper layer likewise contains a luminescent substance 324, which may be different in particular from the luminescent substance 312.
- the first and / or second paper layer may also comprise one or more further feature substances of the type described above.
- the first layer may contain a luminescent substance and the second layer may contain a feature substance.
- the preparation of this variant according to the invention can be carried out according to the production of security paper with window threads, as stated above.
- two sheets, an upper and a lower sheet are formed and joined together, wherein in the upper sheet windows are inserted and the lower sheet is made over the entire surface.
- the desired Lumineszenz- and feature substances are incorporated into the leaves.
- the windows in the top sheet can be produced even after its production by punching, cutting or the like.
- FIG. 29 shows a two-layer structure of a value document 330 according to the invention, as it results in a section along A-A in FIG. 26.
- both paper layers on Balkenwasser Lake.
- the second paper layer 306 contains a luminescent substance 312
- the first paper layer 304 contains one of 312 different luminescent substance 324 and, moreover, a feature substance 332.
- further luminescent substances can be present independently of one another in the first and / or second layer and optionally independently one or more feature substances are incorporated into each other in the first and / or second position.
- the bars of the different layers can be congruent or even aligned with gaps.
- the thickness modulations in both layers can be realized by means of windows.
- FIG. 30 shows a measurement signal 340, as results from the authenticity check of a value document 300 according to the invention with bar watermark 302.
- the intensities I of the measuring signal 340 are plotted on the ordinate as a function of the measuring position x, ie the position of the sensor above the document of value.
- the emission intensity of the luminescent substance 312 is measured here. In areas with thicker paper, the signal intensity is greater than in areas with thinner paper, since more or less luminescent or feature substance is located under the sensor as a function of the paper layer thickness. If you pass the sensor across the bar watermark 302, you measure in the area of the thicker paper a higher intensity than in the area of the thinner paper and thus measures a type of barcode which is reproduced by the measurement signal 340.
- the measured intensity of the luminescent substance drops to zero.
- the authenticity check for value documents 320 or 330 with different luminescent substances takes place analogously, whereby if appropriate filters are used which only let through the radiation of one of the luminescent substances.
- FIG. 31 shows a paper machine 370 in which a first paper layer with a countercurrent circular screen 374 and a second paper layer with a short former 372 are produced.
- first paper ply as a countercurrent base ply
- the first ply may be formed in other embodiments with a DC filter, without departing from the scope of the invention.
- the two paper layers are brought together in the area of the take-off roll 376 and chatted with each other.
- a security thread 378 or a security tape supplied to the countercurrent rotary screen 374 is introduced.
- a first suction device 380 arranged between short film 372 and countercurrent rotary screen 374, openings can be introduced into the second paper layer (short former layer) 384.
- an optional second suction device 382 which is arranged after the point of contact of the two paper layers, openings can also be introduced into the first paper layer (counter-current round-screen layer).
- FIG. 32 shows a detail of a two-ply security paper 350 according to the invention in plan view, as can be produced with a paper machine 370 of the type shown in FIG. 31.
- a circular hole 354 which was preferably produced paper-mechanically by E-types applied to a round screen.
- the second paper layer 358 which was preferably produced by means of a short shaper, there are star-shaped openings 356. These openings were produced in the exemplary embodiment by means of a perforated suction roll 380 which, while still wet, removed the paper fibers from this second paper web.
- the shapes of the two openings 354 and 356 can be configured as desired. The position of the openings to each other and their size can be controlled according to the requirements.
- the two openings can come to lie one above the other so that a see-through window is created: however, they can of course also be arranged next to each other.
- the openings may be larger or smaller or equal in size relative to each other.
- a band-shaped security element 352 for example a wide security thread, may be incorporated between the paper webs.
- the band-shaped security element 352 is covered by the first and second paper layers and is only visible in a plan view of the openings 354 and 356.
- Fig. 32 (b) shows the cross-section of the security paper along the line A - A.
- the tape-shaped security element 352 is covered by the second paper layer 358 and the first paper layer 360 and is accessible at the openings 354 and 356.
- the size of the openings can correspond to the width of the security band. But it is also quite possible that one or both openings is wider or narrower than the band-shaped security element is / are. If the two paper layers are a short form liner 358 and a countercurrent circular layer 360, between which a security thread 352 is embedded, the width of the security thread 352 and the relative width of the openings in the short form layer and the countercurrent circular layer are different Arrangement of the two openings and any features of the security thread a variety of possible designs, all of which can be generated with the paper machine 370 of Fig. 31 (or in other embodiments with a paper machine in which the first paper layer is generated by a DC strainer).
- openings 356 are generated in the Kurzformerlage by the first Absaugeiruchtight, which can represent arbitrary shapes, for example, also signs, symbols or the like.
- a thread 352 is introduced, which rests on an E-type.
- the E-type is chosen so high that fibers can "float" under the introduced thread and thus the thread is open in the area of the E-types
- Short form ply opening 356 may be narrower than the thread width, as shown in Figure 32 (a), or wider, The openings 356 may be aligned in exact position with countercurrent vents 354, as shown to the left in Figure 32 (a), or at random between them In the first case, this variant shows a see-through window, the size of which is limited by the openings 354 in the countercurrent circular sieve layer, see Fig.
- the desired shape 356 is only from the short form side
- this variant provides a substrate in which the introduced security thread 352 is partially open on both sides A see-through window only forms if opposing openings overlap randomly.
- the openings 354 are always formed in the Gegenstromrundsieblage greater than the openings 356 in the Kurzformerlage, the openings 354 may be narrower or wider than the thread width.
- the Kurzformerlagen- openings 356 may as shown in Fig. 33 are positioned accurately to the openings 354 or coincidentally lie between these openings or overlap with them.
- a see-through window results only in positionally accurate alignment of the two openings.
- the shape of the short orifice openings 356 is visible from both sides of the substrate. If the openings are not aligned with positional accuracy, a substrate with a security thread 352 partially exposed on both sides results again.
- openings 356 are introduced into the short-face layers as described above, while the counter-current round screen has neither E-types nor an embossing.
- a register control which can be done for example by means of register marks 362
- the openings 356 are aligned in the Kurzformerlage on certain locations of the Gegenstromrundsieb supplied security thread 352.
- a negative writing 364 of the security thread 352 can be seen in the openings 356 of the short former layer.
- openings 356 are introduced into the short-former layer 358 and a security thread 352 is fed to the counter-current round screen.
- Countercurrent rotary screen 374 is provided with embossing, the webs of which are preferably in register with short former layer openings 356, so that the generated window openings 354 in counterstay layer 360 and openings 356 in short former layer 358 alternate on both substrate sides.
- an opening is first introduced into the short-former layer in the manner described and the short-former layer and the counterstop round-layer layer are covered with the security thread. After removal of the entire paper layer, an opening is sucked out through a second suction device 382 in the region of the security thread.
- the openings of the two paper layers can be in register with each other or arranged randomly.
- the sixth variant is similar to the third variant, but in this variant the countercurrent rotary screen is provided with a watermark embossing that falls on the region of the incoming thread.
- the first suction device 380 openings of any shape are sucked out of the Kurzformerlage, so that the thread is exposed in the extracted areas.
- any shaped openings of the device 380 may be filled with a material, such as fibers, plastic granules or rubber, and the material may be transferred to the wet short-form web by over-pressure or adhesion.
- the paper web is then trimmed with thread using the countercurrent rotary screen layer.
- the introduced material then appears in transmitted light as a dark shape. If an oil is applied as a material, the mold may also appear semitransparent in the dried substrate.
- the diameter of the first or second suction device 380, 382 is dependent on the arc length and is suitably chosen as large as possible in order to keep the rotational speed as low as possible. However, the maximum possible diameter is also limited by the space conditions between short shaper 372 and countercurrent round sieve 374. Since the contact area with the short-former layer 384 will also be small with a small diameter, it may be recommended, especially in confined spaces, not to make the suction device 380 round, but to form a trapezoidal or triangular shape, as shown in FIG. In this embodiment of the suction device 380 Absaugformen 386 are mounted on a flexible base material 388. The drive takes place in the embodiment via a chain 390th
- FIG. 37 shows a section of a suction wheel 380 in side view
- FIG. 38 shows a similar suction wheel 380 with a slightly different design of the removal openings 408 or channels 414 in the region of such an opening in plan view
- FIGS. 39 (a) and (b 38 are side views of the middle segments 402 and 404 of FIG. 38 in the direction of the lines AA and BB of FIG. 38.
- the locations marked 416 and 418 respectively denote those in the cross-sectional views of FIG. 39 (a) and FIG. (b) visible edges.
- the side view shown in FIG. 37 corresponds to the side view of the cover plate 406 in the direction of the line C-C of FIG. 38.
- the suction wheel 380 has a sandwich construction of a plurality of segment plates, through which a plurality of shapes for the removal opening. 408 can be achieved.
- the Absaugrad consists of a first cover plate 400, two intermediate plates 402 and 404, and another cover plate 406.
- the plates 400 to 406 may be made of metal or an impact resistant, not too brittle plastic and using a laser beam, a water jet or the like Be made technology.
- the plates are screwed, with the seal optionally a Sprühdichtmasse and / or sealing rings are used.
- the circumference of the Absaugrads 380 corresponds to the arc length of the paper layer to be processed in the wet state. After screwing the Absaugrad 380 is inserted and fixed to a guide shaft, not shown. If necessary, several suction wheels can be pushed and fixed on the guide shaft.
- the filling shaft is driven centrally and in preferred embodiments runs synchronously with the web speed.
- the suction wheel 380 After the paper machine has started, the suction wheel 380 also starts, is brought to production speed, and the short shaping web 384 is delivered until openings form in the short forming web through the suction.
- the raised areas 410 recognizable in FIGS. 37 and 39 (a) pierce the still wet paper web and an opening of the desired shape is sucked off via the removal opening 408 by an applied partial vacuum.
- the areas adjacent to the removal openings 408 may be recessed.
- the removal openings 408 and the channels 414 must be cleaned.
- a trough 392 with filtered water (Fig. 31) be provided, which passes through the Absaugrad 380 in the opposite region of the suction.
- the vacuum is applied in the exemplary embodiment with a fixed vacuum device 394 (FIG. 31), which grinds on the surface of the cover plate 406.
- the suction thus acts via one of the channels 414 only at the removal opening 408 which is in contact with the paper web 384.
- the sandwich construction comprising a plurality of segment plates permits an almost unlimited shaping of the removal openings 408.
- the intermediate plates which can be assembled in any desired number, thereby generate the shape of the removal openings per se.
- the width of the opening can be adjusted. For example, a 10 mm wide opening can be produced by two intermediate plates of 5 mm, or else by 2 mm intermediate plates.
- the cover plates 400, 406 serve to limit the boundary and the application of the vacuum. While only one cover plate 406 has a channel opening in FIG. 38, such openings may of course also be provided in both cover plates, in which case a vacuum device 394 would have to be arranged on both sides of the suction wheel 380.
- the suction devices 380 and 382 may also be coated with a flexible plastic mask in which not only comparatively coarse but also very fine patterns, such as alphanumeric or abstract characters, may be recessed. In this way, continuous patterns, such as meandering forms or continuous texts, or even passerge nau arranged pattern, such as values in a banknote, are generated in the paper layers.
- the mentioned patterns can be arranged in one of the paper layers or congruent or offset in both paper layers.
Landscapes
- Paper (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08019593.6A EP2031126B1 (de) | 2005-03-23 | 2006-03-14 | Verfahren und Saugvorrichtung zur Herstellung eines Sicherheitspapiers |
US11/909,115 US20090001709A1 (en) | 2005-03-23 | 2006-03-14 | Multi-Ply Security Paper |
PL08019593T PL2031126T3 (pl) | 2005-03-23 | 2006-03-14 | Sposób i urządzenie ssące do wytwarzania papieru zabezpieczonego |
CN200680009117XA CN101146954B (zh) | 2005-03-23 | 2006-03-14 | 多层安全纸 |
EP06723411.2A EP1899527B1 (de) | 2005-03-23 | 2006-03-14 | Mehrlagiges sicherheitspapier und verfahren zur herstellung desselben |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005013474 | 2005-03-23 | ||
DE102005013474.2 | 2005-03-23 | ||
DE102005045566A DE102005045566A1 (de) | 2005-03-23 | 2005-09-23 | Mehrlagiges Sicherheitspapier |
DE102005045566.2 | 2005-09-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006099971A2 true WO2006099971A2 (de) | 2006-09-28 |
WO2006099971A3 WO2006099971A3 (de) | 2007-04-19 |
Family
ID=36764494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/002333 WO2006099971A2 (de) | 2005-03-23 | 2006-03-14 | Mehrlagiges sicherheitspapier |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090001709A1 (de) |
EP (3) | EP2031126B1 (de) |
CN (3) | CN101146954B (de) |
DE (1) | DE102005045566A1 (de) |
ES (2) | ES2717631T3 (de) |
PL (1) | PL2031126T3 (de) |
RU (2) | RU2401208C2 (de) |
WO (1) | WO2006099971A2 (de) |
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DE102005028162A1 (de) * | 2005-02-18 | 2006-12-28 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
DE102005022018A1 (de) * | 2005-05-12 | 2006-11-16 | Giesecke & Devrient Gmbh | Sicherheitspapier und Verfahren zu seiner Herstellung |
DE102005025095A1 (de) * | 2005-06-01 | 2006-12-07 | Giesecke & Devrient Gmbh | Datenträger und Verfahren zu seiner Herstellung |
DE102005032997A1 (de) * | 2005-07-14 | 2007-01-18 | Giesecke & Devrient Gmbh | Gitterbild und Verfahren zu seiner Herstellung |
DE102005061749A1 (de) * | 2005-12-21 | 2007-07-05 | Giesecke & Devrient Gmbh | Optisch variables Sicherheitselement und Verfahren zu seiner Herstellung |
US20070241551A1 (en) * | 2006-04-18 | 2007-10-18 | Graff Jacob C | Automatic Bookmark |
DE102006039305A1 (de) * | 2006-07-21 | 2008-01-24 | Giesecke & Devrient Gmbh | Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal |
-
2005
- 2005-09-23 DE DE102005045566A patent/DE102005045566A1/de not_active Withdrawn
-
2006
- 2006-03-14 US US11/909,115 patent/US20090001709A1/en not_active Abandoned
- 2006-03-14 EP EP08019593.6A patent/EP2031126B1/de not_active Not-in-force
- 2006-03-14 ES ES08019593T patent/ES2717631T3/es active Active
- 2006-03-14 RU RU2007138905/12A patent/RU2401208C2/ru not_active IP Right Cessation
- 2006-03-14 EP EP06723411.2A patent/EP1899527B1/de not_active Not-in-force
- 2006-03-14 EP EP08019594.4A patent/EP2031127B1/de not_active Not-in-force
- 2006-03-14 CN CN200680009117XA patent/CN101146954B/zh not_active Expired - Fee Related
- 2006-03-14 ES ES08019594.4T patent/ES2556258T3/es active Active
- 2006-03-14 PL PL08019593T patent/PL2031126T3/pl unknown
- 2006-03-14 CN CN2011100357848A patent/CN102154945B/zh not_active Expired - Fee Related
- 2006-03-14 WO PCT/EP2006/002333 patent/WO2006099971A2/de active Application Filing
- 2006-03-14 CN CN201110035190.7A patent/CN102174782B/zh not_active Expired - Fee Related
-
2010
- 2010-03-19 RU RU2010110324/12A patent/RU2433217C1/ru not_active IP Right Cessation
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US8968856B2 (en) | 2006-03-31 | 2015-03-03 | Giesecke & Devrient Gmbh | Security element and method for its production |
US20090186205A1 (en) * | 2006-06-06 | 2009-07-23 | Arjowiggins Security | Material in sheet form having a window, its manufacturing method and security document comprising it |
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RU2482234C2 (ru) * | 2007-07-11 | 2013-05-20 | Аржовигжен Сикьюрити | Способ изготовления листового материала |
US8372241B2 (en) | 2007-07-11 | 2013-02-12 | Arjowiggins Security | Process for manufacturing a sheet material |
US8603615B2 (en) | 2007-07-23 | 2013-12-10 | Giesecke & Devrient Gmbh | Security element |
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RU2494185C2 (ru) * | 2008-03-07 | 2013-09-27 | Фабрика Насьональ Де Монеда И Тимбре-Реаль Каса Де Ла Монеда | Защищенная от подделки бумага, способ ее изготовления и защищенный от подделки документ, полученный с использованием вышеуказанной бумаги |
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Also Published As
Publication number | Publication date |
---|---|
RU2007138905A (ru) | 2009-04-27 |
RU2433217C1 (ru) | 2011-11-10 |
WO2006099971A3 (de) | 2007-04-19 |
US20090001709A1 (en) | 2009-01-01 |
CN102174782B (zh) | 2014-12-10 |
RU2401208C2 (ru) | 2010-10-10 |
EP1899527A2 (de) | 2008-03-19 |
CN101146954A (zh) | 2008-03-19 |
CN102154945A (zh) | 2011-08-17 |
ES2717631T3 (es) | 2019-06-24 |
EP2031127A1 (de) | 2009-03-04 |
CN101146954B (zh) | 2011-11-16 |
ES2556258T3 (es) | 2016-01-14 |
EP2031127B1 (de) | 2015-10-21 |
DE102005045566A1 (de) | 2006-09-28 |
CN102174782A (zh) | 2011-09-07 |
EP2031126A1 (de) | 2009-03-04 |
EP2031126B1 (de) | 2018-12-26 |
PL2031126T3 (pl) | 2019-09-30 |
CN102154945B (zh) | 2012-11-28 |
EP1899527B1 (de) | 2016-06-22 |
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