Method of producing sheet material

FIELD: process engineering.

SUBSTANCE: invention relates to production of sheet material composed of, at least, two superimposed fibrous layers. Proposed method comprises the following steps. First paper layer is made with, at least, one elongated zero-thickness zone by filtering water suspension at first drum screen. Second paper layer is made at second drum screen to make, at least, one recess in second layer. At least, one transparent element is arranged between two still wet layers to bind both layers so that said recess of second layer, one said transparent element and said elongated zero-thickness zone of first layer are opposed. Made structure is dried.

EFFECT: sheet material with protective element without structure peeling.

43 cl, 6 dwg

 

The invention relates to a method of manufacturing a sheet material having at least one window, and also to protected the document, obtained using this method.

From the prior art there are known various protected sheets, provided with a through or blind Windows, which give the possibility to observe the sign of protection, placed in the zone of the window. Typically, these Windows are made in a protected worksheet holes, covered partially transparent protective element type of foil or plates, which may be placed a sign of protection.

In the patent GB 1552853 described banknote paper layer, in which an embedded security thread. In the specified paper layer is made opposite to each other window, through which one can see the security thread. These Windows can be performed using a laser device for removing material paper layer while maintaining the intact protective threads. In accordance with an alternative they can also be performed mechanically, for example by cutting or blasting.

In the application EP 229645 disclosed securities, with two layers of paper between which is placed the security thread. In at least one of these layers with holes, which used the reliefs in which pallotti), taking place on the grid for the formation of this layer.

In the application EP 0687324 described a method of manufacturing a double layer of paper having at least one zone with a thickness less than the remainder of the sheet. The result is virtually transparent area, without resorting to this to the perforation of the paper in this place.

Next, from the application WO 95/09274 known sheet securities, consisting of two opposite each other in layers, each of which has an area of zero thickness, and of a strip of transparent material embedded in the paper sheet, resulting in this strip is opposite the zone of zero thickness, which allows to obtain a transparent window.

The disadvantage of such sheets is that on the surface appear zones of different thickness, in particular thickening at the location of the embedded strips, so if areas of low or zero thickness have a significant surface area, it becomes extremely difficult to work with such a sheet on an industrial scale. In fact, if necessary, storage or transportation of the sheet stack them in large quantities in the foot, the zone of small thickness will inevitably be superimposed one on another, which will lead to imbalance of the foot.

In the application WO 2004/001130 describes how to perform the backing paper, position the speaker in in contact with the forming mesh lead special security thread, and the grid has a convexity that provides the ability to perform in the pad window through which is visible the edge of the protective thread. This method is unsuitable for implementation in the paper substrate protective threads of relatively large width, as in the process of implementing a wide filaments on the surface of the paper layer may appear visible defects such as missing material.

Application EP 0860298 and EP 0625431 also known a method of manufacturing securities, in accordance with which is inserted into the first paper layer security thread using methods type window thread ("thread in the window"), as described in the application EP 0059056. On one side of the paper layer made a series of Windows through which one can see the security thread. In the case of applying a relatively wide security thread, in particular a width of more than 2 mm, provide for bonding of the first layer with the second in order to conceal one or more defects.

In addition, from patent US 6428051 known valuable paper having a fibrous layer, in which the window is closed by a foil, which is produced by stamping in the specified layer. The size and/or shape of the window is determined by the type of punching tool, so if you want to create Windows with different sizes and/or shapes tool're starting anew and they shall be changed.

In the application DE 102005045566 described a method of manufacturing a sheet having two paper layers, one of which may have a zone of zero thickness, in which are placed the sign of protection, and the second can be performed by one or more notches.

From French patent application FR 2891761 known method of making sheet material having two paper layer, which is made open, get nabrasyvaniem under pressure at least one layer of liquid under pressure after connection of two layers of paper.

Finally, application WO 00/39391 and WO 2005/0512249 known methods of forming the paper sheet is performed in a single layer on a single drum.

The purpose of the invention is to develop a method that would provide the sheet material with a window, in which is placed a sign of protection, preferably of sufficient width, and, in particular, do not have any appreciable thickening.

Thus, the subject invention is a method of manufacturing a sheet material having at least two superimposed one upon the other fibrous layer, comprising the following steps: perform the first paper layer having at least one elongated zone of zero thickness, by filtering the aqueous suspension of fibers on the grid of the first drum or farmer, to perform a second paper layer on which TKE second drum forming at least one recess in the second layer, put at least one at least partially transparent element between the two is still wet layers and connects the two layers so that the specified at least one recess of the second layer, the specified at least one at least partly transparent element and the specified at least one elongate zone of zero thickness of the first layer located opposite each other, dried thus obtained structure.

In the result, one can obtain the sheet material, the structure of which has a transparent window located in the place of overlay elongated zone of zero thickness, containing at least partially transparent element of the first layer, and removing the second layer.

One advantage of the invention is that with the introduction of at least partially transparent element between two moist layers in the process of forming sheet material amplification of fasteners at least partially transparent element sheet material, resulting in greatly reduced danger of flaking patterns. In addition, due to the fact that the introduction of at least partially transparent element is in the process of forming sheet material, and not after its manufacture, reproduction of this material is extremely for roditelniy and simultaneously reduces production costs.

In accordance with one embodiments of the invention, the fibers used pulp fibers.

In accordance with one of the preferred embodiments, the width of the at least partially transparent element is made greater than the width of the elongated zone of zero thickness of the first layer, so that the introduction of this element in the sheet material, the two edges of this element was introduced between the two fibrous layers. It is preferable that at least partially transparent element had a width greater than the width of the elongated zone of zero thickness, in which it is placed, 4-10 mm.

The width of each elongated zone of zero thickness of the first layer is preferably from 5 to 50 mm, and more preferably from 10 to 25 mm

The width of each at least partially transparent element is preferably from 9 to 60 mm, and more preferably from 14 to 35 mm

In accordance with one embodiments of the invention the thickness of the at least partially transparent element is, for example, from 10 to 50 μm. It is advisable that the thickness of this element was the same as that of the first layer, so that the outer surface of the first layer was almost flat, without any noticeable swelling. For example, the thickness of the first layer of the sheet may faced the ü 20 μm, in the zone of zero thickness of the first layer is placed a continuous strip of the same thickness.

Compared to single-layer protected by the leaves, known from the prior art, the method according to the invention has the advantage that, since the sheet material consists of several layers, you can choose the thickness of the first layer such that it corresponds to the thickness of at least partially transparent element that will allow you to get almost flat sheet, regardless of the thickness of the transparent element.

In accordance with one particularly preferred embodiments at least partially transparent element is provided with at least one means of protection against forgery. In particular, the at least partially transparent element may be a device with a variable optical interference effect, in particular rainbow and/or diffraction on liquid crystals, a lens system, hologram, magnetic, metallic or crystalline coating, magnetic fibers, indicators detected using magnetic resonance, indicators, detectable by x-ray fluorescence, biomarkers, varnish or ink, luminescent, in particular fluorescent, indicators, photochromic, thermochromic, electroluminescent is fair, and/or piezography, and/or tribometric compounds and/or compounds that change color upon contact with one or more predetermined substances, or any other similar means of protection against fakes.

In accordance with one particular embodiments, at least one means of protection against fakes at least partially transparent element have exactly opposite the notches in the second layer. The result is a protected worksheet that contains at least one means of protection against counterfeiting, which you can watch at the window level. You can also provide such a construction in which, at least partially transparent element will include several anti-counterfeit protection, of which only some will be located opposite the grooves of the second layer, and the other will not.

In accordance with one variant of at least partially transparent element contains at least one means of protection against fakes, located opposite the notches of the second layer, and at the level of the notches of the second layer, the total thickness of the at least partially transparent element is close to the thickness of the sheet material. So, for example at least partially transparent element may have a thickness of 20 μm with a concentration of about 40 μm at the level of the grooves of the second layer, in which the can is to place a safeguard against forgery.

The advantage of the protected sheet according to the invention is that owing to the special structure can incorporate a device with a thickness exceeding the thickness of the foil used commonly for transparent Windows, such as integrated circuits or sensor devices. So, if the thickness of the traditionally used foil is about 5-10 μm, an integrated circuit or the sensor device can be performed with thicknesses from 30 to 90 μm.

In accordance with one variant of implementation of the specified at least partially transparent element may represent, for example, the pad or, preferably, a continuous strip.

The term "strap" is a flat element with a small size, that is, with dimensions much smaller than the substrate on which it is placed, in particular square, round or oval in shape. This may be accomplished, for example, in the form of pads in the shape of a square with sides of 1.5 cm

Preferably, elongated, at least partially transparent element of the first layer was a continuous strip and had the same length as the elongated zone of zero thickness of the first layer.

In accordance with one embodiments, the substrate is at least partially transparent element made of synthetic material is represented, for example, a film of a complex of the polyester. Preferably, elongate zone of zero thickness and the specified at least partially transparent element were of rectangular shape were the same thickness and walked across the length of the specified first layer. So, for example at least partially transparent element may be a continuous strip, whose length corresponds to the length of the elongated zone of zero thickness of the first layer, and the width exceeds 6 mm width of this zone, resulting in the specified zone of zero thickness will be fully offset specified as a continuous strip. This results in the advantage of obtaining a protected sheet, the surface of which is corresponding to the first layer is flat. In accordance with one of the preferred embodiments, the first layer has multiple elongated zone of zero thickness, which are parallel to each other, and at least partially transparent elements placed in front of each of the elongated zone of zero thickness, over the entire surface of the first layer, resulting in said first layer takes the form of a sequence of parallel fibrous strips and at least partially transparent stripes.

In accordance with another embodiment in the first layer are additionally provided at least on the in at least partial omission of material located in at least one fibrous zone. The result is a structured first layer, which is very difficult to imitate. In addition, due to the presence of gaps in the material can achieve tactile effects, when you can recognize the material to the touch.

In accordance with one variant of implementation of the admissions materials are partial, i.e. at the location of these absences, the thickness of the first layer is smaller. In some cases, if the thickness of the first layer in the location of the missing material is rather small, these passes allow you to see the second layer due to the transparency.

In accordance with another embodiment omissions of material are continuous, i.e. at the location of these absences, the thickness of the first layer is zero. In this particular case due to such gaps can see the second layer directly.

In accordance with one variant of implementation gaps can go across the entire width of the fibrous zone in which they are provided.

In accordance with another embodiment omissions of material do not go across the entire width of the fibrous zone in which they are provided.

Omissions may have various shapes, such as geometric, in particular, round, triangular, square, direct ogolne etc.

To ensure high strength and good adhesion structure of the sheet material, it is preferable that the recess of the second layer had a width of less than or equal to the width of the elongated zone of zero thickness of the first layer. It is preferable that the width of each recess of the second layer was smaller by at least 5 mm than the width of the corresponding elongated zone of zero thickness of the first layer.

In accordance with one variant of implementation, to enhance protection against forgery of the first and/or second layer of sheet material provided with at least one sign of protection. It is advisable that the security features were placed in a thicker layer, preferably in the second. For example, the first and/or second layer may contain a watermark or security thread.

When using variant implementation, in accordance with which the fibrous zone of the first layer are gaps, particularly preferable that the second layer had evidence of protection against these passes.

One advantage of the invention lies in the fact that, in accordance with one of the private options for the implementation of one of the layers may contain a wide security thread, a width which is greater than 2 mm, in particular 2 to 10 mm, preferably approximately 3 mm, and the area of implementing this thread will be p is recruta the second layer, which will, thus, to hide defects arising out of the thread.

The notches of the second layer can have a different geometric shape, such as round, rectangular, square, ovoid, triangular, hexagonal, and so forth. You can also perform these recesses in the form of alphanumeric characters or any characters.

In accordance with one of the private embodiments the second layer is made several notches in such a way that they form some code.

Depending on how you will use later offer sheet material, the total thickness can vary from 70 µm to mm, preferably in the range from 90 to 300 μm.

In accordance with one embodiments, the first and second layers have the same thickness.

In accordance with another embodiment of the first and second layers have different thickness. In particular, the second layer, in which there are recesses have a thickness of more than 60 μm, in order to prevent the weakening of its strength due to the presence of notches, as this layer must have sufficient strength to withstand the weight of the first layer in the process of manufacturing sheet material. The first layer, which consists of a continuous paper strips, you can make more subtle. For example, when the total thickness of the sheets of the first material 110 μm, the thickness of the first layer can be up to 25 μm, and the second is 85 microns.

In accordance with one particular embodiments, the second layer of sheet material is provided at least one multi-color watermark, located opposite the at least partially transparent element located in an elongated zone of zero thickness of the first layer. This multicolor watermark consists of bright zones, i.e. zones with thickness less than the thickness of the rest of the sheet, which are arranged so that they form a raster pattern. Such raster watermarks described in the application EP 1122360.

This implementation has special advantages are that it allows to increase service life multi-color watermark. The fact that such security features as multi-color watermarks, it is very difficult to reproduce. However, this requires to provide very significant local reduction of the thickness of a sheet of paper, which they become susceptible to wear and there is a risk of puncture of the paper. This danger is especially great when you consider that the documents are protected by sheets such as Bank notes, very often are in circulation when they are holding. If you place multicolor watermark opposite the at least partially transparent element is, located in an elongated zone of zero thickness of the first layer, you will be provided with protection to prevent the risk of formation of holes.

In accordance with one of the private features of the invention specified an extended zone of zero thickness of the first layer is carried out by eliminating the filtration of the suspension in at least one area of the grid specified first reel or a specific farmer.

In accordance with another private element of the invention is the elimination of filtering on the first reel or the farmer is carried out by applying masking areas on the perimeter of the specified first reel or a specific farmer. Such masking area can be performed, for example, by using special masks of the adhesive film, metal, glue or varnish.

In accordance with another private characteristic of the invention the grid is specified the first drum or the farmer is further provided with details that prevent filtration of the suspension, to form a complete passes in the fibrous material of the first layer.

In accordance with the following private characteristic of the invention the grid is specified the first drum or the farmer made with tesneniye to form a partial gaps in the fibrous material of the first layer.

In both of these cases receive sheet material from the structure of the new first layer, which is extremely difficult to reproduce.

In accordance with another embodiment specified an extended zone of zero thickness of the first layer is carried out by removing material by nabryzgivaniya jet of fluid under pressure, in particular a jet of water or air, still wet on the first layer before bonding to the second layer.

In accordance with one variant of implementation of the recess of the second layer performs a relief embossed grid of the second drum, thus preventing the deposition of fibrous material in the location of tisani.

You can also perform excavation by attaching to the grid of the second drum parts, preventing the filtering, for example, metal parts, in particular of electro (i.e. metal plate, usually made of bronze), of a piece of glue or a piece of resin. Thus, the shape of the part will determine the shape of the notches. Provides for the use of parts of different shapes for receiving grooves of different shapes.

Finally, you can provide the ability to perform excavation by removing material by nabryzgivaniya jet of fluid under pressure, in particular water jets, still wet on the second layer before bonding to the first layer.

In accordance with one of the preferred embodiments the first is arabena or farmer synchronized with the second drum, so at least one recess of the second layer was set opposite the elongated zone of zero thickness.

The invention also covers the protected document, obtained using the above method. For example, the invention encompasses a means of payment type of the banknote or the receipt, identification type, identification card, driver's license, a page of a passport or visa, or securities of the type of ownership document or certificate or any other document on a paper basis, requiring protection against forgery, or, finally, a secure container or label.

In accordance with one of the private features of the invention protected document is designed so that the first layer contains at least two signs of protection across at least two notches of the second layer, both the sign of protection placed so that they overlap each other when folding the protected document with the formation of protection against forgery or additional information. For example, the first sign of protection can be a bitmap lens covering the second sign of protection formed an invisible image which can be shown only in the overlap of the two security features. In accordance with another variant, the first sign of protection can be submitted is ü a polarized filter, and the second sign of the protection liquid crystals, forming, for example, the image shown by the filter.

The subject of the invention is also of sheet material containing:

at least two superimposed one upon the other fibrous layer,

the first paper layer having at least one elongated zone of zero thickness,

the second paper layer,

at least one recess in the second layer,

- at least one at least partially transparent element between the two layers, with the specified at least one recess of the second layer, the specified at least one at least partially transparent element and the specified at least one elongate zone of zero thickness of the first layer are arranged opposite each other.

The sheet material can be characterized by at least one of the above signs.

The invention will become clearer upon reading the following detailed description of examples of its execution, not having restrictive, given with reference to the attached drawings, where:

figure 1 is a diagram illustrating the various stages of the method according to the invention,

2 is a diagram illustrating one step of the method according to the invention,

figure 3 is a diagram illustrating one of the reels used p and the manufacture of sheet material in accordance with one embodiments of the invention,

4 is a transverse section of the sheet material obtained in accordance with one embodiments of the invention,

5 is a top view of sheet material in figure 4,

6 is a top view of the banknote obtained using the proposed method.

For clarity we do not always observe the relative proportions of the various components shown, given the schematic nature of the drawings, and, in addition, figure 4-6 shows only one zone of zero thickness of the first layer of sheet material covered two areas of the fibrous material.

Figure 1 presents a diagram illustrating the various stages in accordance with one variant of the method of manufacturing according to the invention.

The first layer 2 having elongated zone 4 zero thickness, performed on the basis of aqueous suspension of cellulosic fibers using a first reel R1, the grid of which is applied the mask M In the fibrous suspension is deposited only in areas where there are no masks M Simultaneously in the first layer at the level of the mask M being a continuous strip 10 of transparent plastic (not shown)that is wider than the width of the masks. You get wet the first layer 2, formed by alternating elongated zones 4 zero thickness, which are strips of transparent plastic and zone the C fiber material.

Thus obtained first layer 2 down to the second reel R2, so that it could be applied to forming the second fibrous layer 6. The second layer 5 is formed on the grid of the second drum, on which is fixed the special details that prevent filtration of the suspension. These parts are placed in specially marked places, so that they formed a recess 6, the relevant provisions of the elongated zones 4 zero thickness of the first layer 2. As a result of this get a second wet layer 5 formed of fibrous material into the grooves 6.

At the level of the output from the second drum is the first layer 2 on the second layer 5. You get a two-layer sheet, which can then be subjected to a surface treatment or impregnation, for example, to enhance the surface with PVA, and/or to increase the resistance to contamination, or to improve the suitability for printing, in particular using a size press or impregnating machines. Then the sheet is dried and wound into bobbins according to the traditional technological procedures. Figure 2 is a diagram illustrating one of the features of the individual stages of the proposed method in accordance with one of the embodiments, where the first fibrous layer 2 is formed on a machine with a drum R1.

A continuous strip of transparent plasticopedia in contact with the forming the first fibrous layer 2. This strip is placed so that its middle was at the level of the mask M, and its edges in contact with the portages, which are deposited on areas where there is no drum R1.

Figure 3 shows a diagram illustrating the first reel R1 used in the method of manufacturing sheet material 1 according to the invention as applied to a particular case, when the first fibrous layer 2 of said sheet material has an elongated zone 4 zero thickness and fibrous areas, having a complete omissions of material.

Not the grid T the first reel R1 has a rectangular mask M of the adhesive film applied in such a way that they should go with a uniform intervals around the perimeter of the drum. Thus, at the level specified masks M sedimentation of suspensions of fibers does not occur, the first fibrous layer 2 will have a zone 4 zero thickness. In the example considered here the first reel R1 is further provided with a rectangular metal parts P, applied to the grid of T between two adjacent masks M These parts R prevent the filtration of a suspension of fibers, and therefore, any deposition of the fibers, resulting in fibrous areas 3 of the first layer 2 will be complete omissions of material.

Figure 4 and 5 illustrates the sheet material obtained in accordance with one of the three embodiments of the invention, where thickening available at the level of zones 4 zero thickness, arbitrarily scaled.

The sheet material 1 consists of two layers of fibrous material. In the first layer of fibrous material is alternating elongated zones 3 of fibrous material and of elongated zones 4 zero thickness. In the second layer 5 of fibrous material made several rectangular and/or circular grooves 6, which are located opposite the elongated zone 4 zero thickness of the first layer 2. Between the two layers 2 and 5 are placed strips 10 and a transparent plastic, such as complex polyester, with the edges of these strips inserted between the elongated areas of the fibrous material of the first layer 3 and second layer 5, and the middle of the strips appear inside the elongated zones 4 zero thickness of the first layer.

In the particular case presented in figure 4 and 5, the first and second layers have different thicknesses - the first 40 μm, and the second 70 μm. In the second layer 5 of fibrous material made several circular grooves 6, located opposite the elongated zone 4 zero thickness of the first layer 2. In addition, the thickness of the transparent strip 10 is the same as the elongated zone 4 zero thickness, in which it is inserted, resulting in the surface of the sheet obtained almost flat.

Figure 6 depicts the banknote 11 according to the invention, which contains the sheet is howl material, shown in figure 4 and 5, and the watermark 12, made in the second layer 5.

It is obvious that the invention is not limited to the above described examples. In particular, it is possible to provide a combination of characteristics peculiar to different as shown in the examples, the framework is not presented here options.

If not agreed otherwise, the expression "containing..." should be understood as a synonym for the expression "containing at least one...".

1. A method of manufacturing a sheet material having at least two superimposed one upon the other fibrous layer, comprising the following steps:
- perform first paper layer having at least one elongated zone of zero thickness, by filtering the aqueous suspension of fibers on the grid of the first drum or the farmer
- perform a second paper layer on the grid of the second drum forming at least one recess in the second layer,
- put at least one at least partly transparent element between the two is still wet layers and connects the two layers so that the specified at least one recess of the second layer, the specified at least one at least partly transparent element and the specified at least one elongate zone of zero thickness of the first layer were located opposite each other is,
- dried thus obtained structure, and at least one at least partly transparent element is a solid strip and has the same length as the specified at least one elongated zone of zero thickness of the first layer.

2. The method according to claim 1, in which the fibers are using pulp fibers.

3. The method according to claim 1, in which the width of the specified at least partially transparent element is larger than the width of the specified at least one elongated zone of zero thickness, in which it is placed.

4. The method according to claim 1, in which the width of the specified at least one zone of zero thickness of the first layer is from 5 to 50 mm

5. The method according to claim 1, in which the width of the specified at least one zone of zero thickness of the first layer is from 10 to 25 mm

6. The method according to claim 1, in which the width of the specified at least one at least partially transparent element is from 9 to 60 mm

7. The method according to claim 6, in which the width of the specified at least one at least partially transparent element is from 14 to 35 mm

8. The method according to claim 1, in which the thickness of the specified at least one transparent element more than 10 μm.

9. The method according to claim 8, in which the thickness of the specified at least one transparent element is from 10 to 50 microns.

10. Pic is b according to claim 1, in which the thickness of the specified at least one at least partially transparent element is the same as the specified first layer.

11. The method according to claim 1, wherein said at least one at least partly transparent element is provided with at least one means of protection against forgery.

12. The method according to claim 11, in which the indicated remedy against fakes is chosen from the group comprising device with variable optical interference effect, in particular rainbow and/or diffraction on liquid crystals, a lens system, hologram, magnetic, metallic or crystalline coating, magnetic fibers, indicators detected using magnetic resonance, indicators, detectable by x-ray fluorescence, biomarkers, varnish or ink, luminescent, in particular fluorescent, indicators or photochromic, thermochromic, electroluminescent, and/or piezography, and/or tribometric connection, and/or compounds that change color upon contact with one or more predetermined substances.

13. The method according to claim 11, in which the indicated remedy against counterfeiting is an integrated chip.

14. The method according to claim 11, in which the indicated remedy against fakes have exactly opposite the at least one recess in the WTO is the first layer.

15. The method according to 14, in which the level of the specified at least one recess of the second layer specified at least one at least partly transparent element containing the specified means of protection against counterfeiting, has a thickness close to the thickness of the rest of the sheet material.

16. The method according to claim 1, wherein said at least one at least partly transparent element is a solid strip.

17. The method according to claim 1, wherein said at least one at least partly transparent element is a plate.

18. The method according to claim 1, wherein said at least one at least partially transparent element has a substrate made of plastic, particularly of complex polyester.

19. The method according to claim 1, wherein the specified first layer is additionally provided with at least one at least partial skipping of the material located in at least one area of non-zero thickness.

20. The method according to claim 19, wherein said at least one pass goes across the width of the zone of non-zero thickness, in which it is provided.

21. The method according to claim 1, wherein the specified at least one recess of the second layer has a width less than or equal to the width of the specified at least one elongated zone of zero thickness of the specified first layer, located opposite the harbour is in the specified at least one recess.

22. The method according to item 21, in which the width of the specified at least one recess of the second layer is smaller by at least 5 mm than the width of the specified at least one elongated zone of zero thickness of the first layer opposite to the specified at least one recess.

23. The method according to claim 1, wherein said first and/or the second layer is provided with a sign of protection.

24. The method according to item 23, wherein said indication protection is a watermark or security thread.

25. The method according to item 23, wherein said indication protection is an extensive thread with a width greater than 2 mm, which is embedded in one of the layers and covered with a material of the second layer.

26. The method according to claim 1, wherein the specified at least one recess of the second layer has a geometric shape of an alphanumeric character, symbol or pattern.

27. The method according to claim 1, wherein the specified second layer of sheet material is provided at least one multi-color watermark, located opposite the at least partially transparent element elongated zone of zero thickness of the first layer of the specified sheet material.

28. The method according to claim 1, wherein the specified at least one elongated zone of zero thickness of the first layer is carried out by removing the filter at least in one area of the grid of the first drum or farmer./p>

29. The method according to p, in which the elimination of filtering on the first reel or the farmer is carried out by applying masking areas on the perimeter of the specified first reel or a specific farmer.

30. The method according to clause 29, in which this mask is made of an adhesive film, metal, glue or varnish.

31. The method according to claim 1, wherein the specified at least one elongated zone of zero thickness of the first layer is carried out by removing material by nabryzgivaniya jet of fluid under pressure in front of his bond with the second layer.

32. The method according to p, in which as indicated jets of fluid under pressure to use water jet.

33. The method according to p, in which as indicated jets of fluid under pressure using a stream of air.

34. The method according to claim 1, in which the specified grid of the first drum or the farmer supplied the parts, preventing the filtration of the suspension, to form a complete omissions of material in the fibrous material of the specified first layer.

35. The method according to claim 1, in which the specified grid of the first drum or the farmer made with tesneniye, with the aim of forming a partial omissions of material in the fibrous material of the specified first layer.

36. The method according to claim 1, wherein the specified at least one recess in the second layer performs embossed grid WTO is on the drum.

37. The method according to claim 1, wherein the specified at least one recess in the second layer is accomplished by mounting on the grid of the second drum parts, preventing the filtering.

38. The method according to clause 37, which as mentioned parts, preventing the filtering, use the metal part, in particular, electro, glue or resin.

39. The method according to claim 1, wherein the specified at least one recess in the second layer is performed by removing material by nabryzgivaniya jet of fluid under pressure, in particular, water jet, still wet on the second layer before bonding to the first layer.

40. The method according to claim 2, in which the first drum or the farmer is synchronized with the operation of the second drum so that the specified at least one recess of the second layer was placed opposite at least one elongated zone of zero thickness.

41. Protected document containing sheet material obtained according to claim 2.

42. The protected document according to paragraph 41, wherein said first layer contains at least two signs of protection, located opposite the at least two notches of the second layer, and these two characteristics protection placed so that they overlap each other when folding the protected document with additional protection against forgery or information.

43. Sheet material containing:
at least two superimposed one upon the other fibrous layer,
the first paper layer having at least one elongated zone of zero thickness,
the second paper layer,
at least one recess in the second layer,
- at least one at least partly transparent element between the two layers, with the specified at least one recess of the second layer, the specified at least one at least partly transparent element and the specified at least one elongated zone of zero thickness of the first layer are placed so that they are located opposite each other, and at least one at least partly transparent element is a solid strip and has the same length as the specified at least one elongated zone of zero thickness of the first layer.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: method involves depositing an additive composition onto a moving creping surface, pressing the base sheet to the creping surface after depositing the additive composition and removing the base sheet from the creping surface. The additive composition contains lotion, a debonder, a softener, aloe, vitamin E, oxidised polyethylenene or mixtures thereof and the base sheet is adhesively attached to the creping surface. The additive composition is also transferred onto the base sheet such that the additive composition makes up at least about 1% of the weight of the sheet article.

EFFECT: method of making a sheet article, improved process of creping fabric, introduction of useful additives in amounts sufficient for improving quality of sheets.

17 cl, 3 ex, 21 dwg

FIELD: textiles, paper.

SUBSTANCE: multilayer thin paper consists of at least two layers. At that the first layer includes a first embossing which forms linings. Moreover, each lining is formed in the shape of at least a part of the first motif. The second layer includes the second embossing which forms protrusions. And each protrusion forms at least a part of the second motif. Moreover, at least the first layer and the second layer are combined together so that the protrusions of the second layer are essentially located inside the linings of the first layer, and the motives are aligned with each other. At that the first motif and second motif are combined with each other to produce a repeating pattern of composite motifs consisting of the first and the second motifs. The group of inventions also relates to device transforming the paper and to a process for producing a multilayer thin paper.

EFFECT: group of inventions provides creation of a paper, which has clearly seen two different sides, and which has improved the tactile and optical characteristics.

26 cl, 19 dwg

FIELD: textile, paper.

SUBSTANCE: article is made with at least partial use of short-fibre cellulose. To form at least two fractions of fibrous material comprising fibres having various composition, short-fibre mass is sifted through a sieve. Besides, fine fibres are separated from cellulose, which pass through the sieve with holes of diameter of 0.2-1.5 mm and which are caught and included into composition of various layers of the fibrous article.

EFFECT: improved tensile strength limit and rigidity during tensioning of long-fibre mass, and also dehydration and porosity.

19 cl, 10 dwg, 1 ex

FIELD: textile, paper.

SUBSTANCE: wallpaper substrate consists of a multilayer paper web with lower and upper sides. The lower side of the web faces a wall when applied. The upper side faces a room. Between the sides there is a lower layer and a fibrous upper layer arranged in direction from the lower side to the upper side. The fibrous lower layer is made of a mixture of fibrous materials based on cellulose and synthetic fibres. The fibrous upper layer is made of a mixture of fibrous materials based on cellulose. At the same time the upper and lower layers are interwoven with each other by means of moist pressing in a couch press. The upper side is satined and is arranged as sealed for direct printing. In particular, for deep printing with a maximum of 1 gap per 1 cm2.

EFFECT: improved quality of wallpapers.

24 cl, 1 dwg, 1 ex

FIELD: textile, paper.

SUBSTANCE: paper product includes at least two layers. The method includes the following: (i) provision of aqueous suspension that contains cellulose fibres; (ii) adding microfibrillar polysaccharide into suspension in amount sufficient to produce from approximately 0.05 to approximately 50 wt % relative to mass of cellulose fibre; (iii) dehydration of the produced suspension and moulding of the first layer, which has density from approximately 150 to approximately 500 kg/m3, of the specified layer paper product. Also refers to a version of the method for production of a layer paper production, and also to a layer paper product itself (its versions) and to application of a layer paper product.

EFFECT: improved ability to bind fibres in at least one inner layer of a paper product, improved resistance to product bends, higher compression strength, resistance to lacing, bend, Z-strength, stiffness index, compression strength in case of lower density of a paper product.

23 cl, 7 tbl, 5 ex

FIELD: printing industry.

SUBSTANCE: decorative impregnated paper for printing by means of ink-jet printing method is designed for manufacture of decorative laminates which are used as building material during furniture fabrication and for interior finish. This kind of paper includes impregnated paper base and paint receiving layer. Paper base includes resin for impregnation in quantity of 40 to 250 wt %. In relation to the mass of paper base. After drying the paper has sufficient humidity which is at least 3.5% and spreading of more than 0.4%. Also, method for obtaining the above paper and its use are described.

EFFECT: better coating quality.

12 cl, 2 ex

FIELD: textile, paper.

SUBSTANCE: sheet material, a protective sheet and a protected document include at least two layers applied one onto the other. Besides, the first layer contains at least one lengthy section of zero thickness, and the second layer contains at least one groove, at the same time the specified at least one groove in the second layer is arranged opposite to the specified at least one section of zero thickness of the first layer, thus forming a window. Methods relate to manufacturing of sheet material and making a protected sheet. Method to make a sheet material includes the following stages. Making the first layer of paper specified above by filtration of cellulose fibre suspension on the metal cloth of the first cylindrical shape or a forming device. Making the second layer of paper on the metal cloth of the second cylindrical shape with formation of at least one groove in the second layer. Then two layers are combined and dried. Method to make a protective sheet repeats the above-specified method with inclusion of the stage, where at least partially transparent element is fixed in the longitudinal section of zero thickness of the first layer of the sheet material.

EFFECT: expanded assortment of protected materials, improvement of their protective properties with provision of tactile effect.

43 cl, 7 dwg

FIELD: textile, paper.

SUBSTANCE: item is arranged in the form of rectangular sheet, has the first parallel edges in the first direction and the second edges in the second direction, perpendicular to the first direction. Item comprises at least two layers attached together by binder applied in the form of fixing pattern between layers. Fixing pattern is the pattern of fixing of increased size and comprises fixing elements arranged along the first group of irregular wave-like lines of fixing, passing from one parallel edge to the other at the first angle, making from 20° to 70°, to the first direction, and along the second group of irregular wave-like fixing lines passing from one parallel edge to the other at the second angle, making from 110° to 160°, in the first direction. The first and second groups of irregular wave-like fixing lines cross to form a grid. Fixed area of surface makes from 0.6% to 6.0% of item area.

EFFECT: improved softness, elasticity of absorbing capacity, volume of item.

13 cl, 8 dwg

FIELD: textiles, piper.

SUBSTANCE: single-layer and multi-layer materials, manufacturing methods thereof and device for pressing thin paper layers are designed for producing soft absorbent design paper. Single-layer material made from thin paper consists of the first external surface and the second external surface. At that, design of the first surface is obtained during wet forming, and design of the second surface is pressed and imitating, which is obtained during wet forming. Multi-layer material made from thin paper contains at least two layers, including two external layers. Each external layer has the first surface and the second surface. One external layer has the design obtained during wet forming at least on the first surface. The other external layer has pressed design at least on the first surface, imitating design obtained during wet forming on the first surface of one external layer. Both external layers are brought together so that their corresponding first surfaces represent external surfaces of multi-layer material made from thin paper. Manufacturing methods are based on using the above materials and device for pressing thin paper layers. The latter consists of a pressing roller and supporting roller. Pressing roller has embossing design that corresponds to surface texture or negative of surface texture of fabric, woolen cloth, strip or roller used for forming the design on the layer, which is obtained during wet forming.

EFFECT: improving quality of material owing to improving its flexibility, smoothness, saturating capacity and absorption rate as well as reducing material prime cost.

14 cl, 5 dwg

FIELD: packing industry.

SUBSTANCE: invention relates to production of ecologically safe packages and refers to a cigarette pack comprising a closing and opening outer box and an inner packing placed inside the outer box. The inner packing encloses a set of rod-like smoking products and an inner wrapping which covers this set. The inner wrapping comprises the first paper layer forming one inner wrapping surface, the second paper layer forming the other inner wrapping surface and a moisture-proof layer between the first and the second paper layers. The moisture-proof layer contains solid paraffin as a basic component and its thickness is enough to provide for the first and second paper layers to be glued together. Wrapping paper as well as the method and machine for its production are proposed.

EFFECT: increased moisture resistance, flavour keeping and improved biological decomposition.

20 cl, 9 dwg

Covered instrument // 2448840

FIELD: printing.

SUBSTANCE: invention relates to a covered instrument, in particular, to a banknote, bank card, identification card, certificate, passport, security or certificate. The document contains a translucent carrier substrate made of paper and/or plastic, and at least one protective element applied on the carrier substrate or embedded in the carrier substrate which when seen from at least one side of the covered instrument in transmitted light shows at least one first image and simulates the presence of at least one first watermark in the carrier substrate. At least in some areas the document has at least one layer simulating first watermark, giving it unexpected optical effects in comparison with protective elements with conventional water marks.

EFFECT: document is provided, which is especially hard-to-copy, having simulated effect of the watermark using the protective element.

38 cl, 8 dwg

FIELD: textile, paper.

SUBSTANCE: counterfeit-proof paper comprises a transparent, at least at some areas, film element, which is freely accessible, at least at some areas, via counterfeit-proof paper. The film element is connected to counterfeit-proof paper by means of an adhesive layer, which is highly transparent and clear in the region of freely accessible areas. The adhesive layer for at least one of freely accessible areas includes a groove, which substantially covers this area surface. The groove in the form of a freely accessible area has an adhesive layer, which is 1-2 mm less or 1-2 mm more than this area. The adhesive layer in the area of at least one of freely accessible areas, apart from the groove, has an ornamental area, on which the adhesive layer is applied in the form of ornaments, symbols or a code. Also a film elements is proposed, and a method to manufacture counterfeit-proof paper or a valuable documents (its version).

EFFECT: improved counterfeit protection of paper.

70 cl, 20 dwg

FIELD: physics.

SUBSTANCE: protected document comprises structural layer and first and second diffraction relief structures. Note here that said relief structures, if seen parallel with structural layer plane, stay at different levels of protection element. Note also that first relief structure borders first reflecting layer, while second relief structure borders second partially reflecting layer. Besides, if spectator faces first reflecting layer, second data generated by second relief structure is partially hidden, while, if spectator faces second reflecting layer, partially hidden is first data generated by first relief structure.

EFFECT: higher degree of protection.

15 cl, 26 dwg

FIELD: textile, paper.

SUBSTANCE: structure is intended for secured and/or valuable documents. It contains at least one substrate of fibre material, optionally, at least one surface layer applied onto one surface of substrate. At the same time the specified surface layer comprises coating or surface pigments and at least one binder. It also contains multiple various elements of substrate and/or optionally of a surface layer, distributed in a random manner inside the substrate and/or optionally the surface layer, and at least one portion of authenticating and/or identifying information is related to at least one spatial and/or physical criterion of at least part of specified various elements. Also a document, a packing facility and a sheet material are proposed with application of the above-specified structure. A method to make such a structure, its versions and a method to authenticate and/or identify the structure are also proposed.

EFFECT: improved extent of protection.

31 cl, 12 dwg

FIELD: textile, paper.

SUBSTANCE: paper with counterfeit protection is used in production of securities and documents. Method to make paper with locally arranged protective elements includes formation of the first paper cloth on the first meshy cylinder. Deposition of water dispersion containing protective elements via nozzles at certain sections of moist paper cloth. Formation of the second paper cloth at the second meshy cylinder. Joining first paper cloth with deposited protective elements with the second paper cloth, and also pressing and drying. Water dispersion of protective elements contains at least one water-soluble polymer in amount of 0.1-3.0 wt %. At the same time dispersion of protective elements is supplied with controlled speed via nozzles, every of which is equipped with pump of auger type.

EFFECT: increased quality of paper due to reduction of pulsations of flow dispersion and increased stability of protective elements deposition process in strictly required amount at certain sections of paper cloth.

8 cl, 1 dwg, 1 tbl

FIELD: printing industry.

SUBSTANCE: counterfeit-proof document relates to data media. It contains graphical ornament for visual reproduction of data on a person and/or item. Ornament includes at least one image and/or text data, and with the help of specified printing logic it is applied onto secured document so that it has electromagnet characteristic specified by printing logic and read by means of logical circuit contained in secured document. Electromagnetic characteristic of electroconductive ornament is inductance, capacitance or frequency characteristic. Graphical ornament is applied onto secured document in the form of linear raster. At the same time lines of linear raster are joined to each other in the form of meander or are arranged in parallel. Version of counterfeit-proof document is the document with graphical ornament applied by electroconductive invisible paint transparent for human eye onto counterfeit-proof document. Other characteristics of this document are identical to characteristics of the first version document specified above.

EFFECT: enhanced protection against document forgery.

10 cl, 7 dwg

FIELD: paper industry.

SUBSTANCE: method is intended to impart dirt and/or moisture resistance to porous substrate for protected documents, and also relates to dirt and/or moisture resistant protected document. Method includes application of dirt and/or moisture resistant compound onto opposite surfaces of porous substrate having porosity of approximately 20-100 millilitres per minutes and its impression into pores of substrate. At the same time compound penetrates and spreads at least in part of substrate thickness, then excess compound is removed from opposite surfaces of substrate. Coating press is used to impress dirt and/or moisture resistant compound into pores of substrate.

EFFECT: specified compounds applied by suggested method do not darken optically variable effects generated by non-porous film structures on the basis of microlenses, which may be used on or inside these protected documents, and thin layers of fibres applied and this introduced into parts of protective devices in protected documents containing windows with dirt and/or moisture resistant properties according to the present invention, demonstrate improved durability.

22 cl, 1 ex

FIELD: textile, paper.

SUBSTANCE: invention relates to secured paper used to manufacture documents, such as banknotes, bills, etc. Secured paper contains synthetic elements with characteristics visible to the naked eye or under specific conditions, and/or by detectors. At the same time paper comprises protective pigments introduced into paste of synthetic element itself, which, in its turn, represents polypropylene.

EFFECT: proposed invention provides for high extent of counterfeit protection of documents including highly wear-resistant synthetic elements.

5 cl, 3 dwg, 1 tbl

FIELD: paper.

SUBSTANCE: protected substrate is intended for production of valuable document, such as banknote, passport, bond, certificate, voucher or other valuable documents. Protected substrate contains fibrous substrate and protective device. Protective device contains at least partially light-transmitting polymer bearing layer, which bears the first protective criterion. Substrate is provided with the second protective criterion. The first and second protective criteria have such shape and mutual location so that when one side of protected substrate is looked at in passing light, the first and second protective criteria visually interact to form the first composite image that is not visible in reflected light.

EFFECT: improved protective properties.

21 cl, 16 dwg

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