EP1991411B2 - Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar - Google Patents
Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar Download PDFInfo
- Publication number
- EP1991411B2 EP1991411B2 EP07711816.4A EP07711816A EP1991411B2 EP 1991411 B2 EP1991411 B2 EP 1991411B2 EP 07711816 A EP07711816 A EP 07711816A EP 1991411 B2 EP1991411 B2 EP 1991411B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- embossing
- roughly
- roller
- points
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
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- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/02—Patterned paper
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0715—The tools being rollers
- B31F2201/0723—Characteristics of the rollers
- B31F2201/0725—Hardness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0715—The tools being rollers
- B31F2201/0723—Characteristics of the rollers
- B31F2201/0733—Pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0715—The tools being rollers
- B31F2201/0723—Characteristics of the rollers
- B31F2201/0738—Cross sectional profile of the embossments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0758—Characteristics of the embossed product
- B31F2201/0761—Multi-layered
- B31F2201/0764—Multi-layered the layers being nested
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0784—Auxiliary operations
- B31F2201/0787—Applying adhesive
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- 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
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/28—Colorants ; Pigments or opacifying agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1023—Surface deformation only [e.g., embossing]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1712—Indefinite or running length work
- Y10T156/1741—Progressive continuous bonding press [e.g., roll couples]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24446—Wrinkled, creased, crinkled or creped
- Y10T428/24455—Paper
- Y10T428/24463—Plural paper components
Definitions
- the present invention relates to an embossing device for at least two-ply surface products such as toilet paper, handkerchiefs or the like with at least a first and a second pair of rollers, each having an embossing roller.
- Embossing devices of the type mentioned are known in many ways from the prior art. For example disclosed EP 1 096 069 A2 Such an embossing device for producing a multi-layer absorbent paper product with an embossing pattern, wherein each one roll from a roll-off and a pair of rollers, consisting of a rubber roller and an embossing roll is supplied. The respective layer webs are embossed, one of the layer webs provided with glue and then passed to form a so-called "nested" structure through a gap arranged between the two embossing rollers of the roller pairs and the layers are firmly connected to each other via a subsequent connecting roller.
- tissue and / or tissue-like materials such as toilet paper, handkerchiefs, kitchen towels or the like, which carry decorative patterns.
- the respective decorative patterns appear very concise and sharp, and optionally the surface product is additionally added by means of color an optical effect.
- tissue is understood to mean a product which corresponds to DIN 6730. Accordingly, tissue is a product which consists wholly or predominantly of pulp fibers, with a fine and soft crepe, which is creped in a closed formation in the paper machine with a dry content of more than 90%, consists of one or more layers, is particularly absorbent, a surface mass of the individual layer of less than 5 g / m2 before creping and a creping wet stretch of more than 5%.
- tissue-like material is understood as meaning a material which, in contrast to tissue material, is produced by changes in the drying process.
- tissue-like material is a product predominantly made of pulp fibers with large and wide creping and open formation, which is creped dry in the paper machine and consists of one or more layers, the basis weight of a layer before creping less than 25 g / m2 and the wet crepe elongation of a layer after creping is greater than 24%.
- the material can also be made from waste paper.
- EP 1 609 589 A2 discloses a printed and embossed handkerchief, which can be made with a device consisting of at least two pairs of rolls, each comprising an embossing roll, said embossing rolls different embossing points Have height.
- a layer is first provided with a micro-embossing during passage through a first pair of rollers and subsequently with a motif embossing when passing through a second pair of rollers.
- US 6,106,928 discloses a device in which layers of a unwinding are fed to first and second roller pairs, the embossing rollers comprised by these roller pairs having embossing points of a first height and embossing points of a second height and embossing points distributed over their entire embossing surface.
- embossing device for at least two-ply surface products such as toilet paper, handkerchiefs and the like according to claim 1.
- the layer webs themselves can be one-, two-, three- or four-ply, but also five- or six-ply, be formed.
- the arrangement of the first and second roller pair can be done in any technically possible manner. In this case, for example, the two pairs of rollers lie on a common axis and be associated with each other in mirror image. However, it is also possible, for example, that the rubber roller is arranged laterally offset from the embossing roller, and the other pair of rollers is arranged according to a mirror image such that here the two embossing rollers come to lie on a first plane and the two rubber rollers in a first plane offset second Level. In each case a gap is provided between the two embossing rollers.
- the embossing device according to the invention may moreover also have two or even three gluing units and be used for the production of at least two-ply, preferably at least three-ply, but also four- or five-ply surface products.
- the individual layers are thereby unrolled as webs of unwinding devices, in which case the webs can also be configured as double-layered or even three-layered in advance.
- embossing device By embossing device according to the invention is advantageously achieved that due to the intended number of embossing points (also embossing nubs called) on the embossing roll of the first pair of rolls sufficient bulk and softness of the relevant web is given, ie that this has a higher volume than that by means of the second pair of rollers embossed at least one further layer web. This is provided by means of the embossing roller of the second pair of rollers with a decorative pattern. Due to the higher density of the embossing points here a very clear representation of the decor pattern is achieved.
- the embossing points of the embossing roller which mediates the decoration of the further layer web can be arranged linearly and at right angles to each other.
- the respective rows formed by the embossing points are preferably formed symmetrically offset from one another.
- the decor pattern is caused in the embossing roll by simply omitting the embossing points at the appropriate places.
- the embossing points are not arranged linearly, but arranged in the form of the pattern itself on the embossing roller.
- a flower motif surrounds a closed certain number of embossing points in the form of just a flower, whereby the embossed motif in the finished surface product for the viewer is clearer and clearer.
- the softness of the product is also increased.
- the decor pattern itself can have any configuration, it can be designed, for example, in the form of a flower, a bird, a heart, etc.
- the embossing device is configured such that the layer which carries the decorative pattern comes to lie on an outer side of the formed finished surface product, wherein it is further preferred that the side of the web which bears directly on the embossing roller of the second pair of rollers, an outer side of the surface product forms.
- the gluing unit applies color-added and / or colored glue.
- the clear or white-colored glue used is subsequently mixed with a corresponding colorant, or else immediately a color-coded glue is applied.
- an additional optical effect is achieved, namely by the microembossing pattern formed by the embossing points of the embossing roller of the second roller pair is visible through the colored glue for the viewer and user.
- the surface product is given a uniform background design, whereby the decorative pattern emerges even more for the viewer.
- the rubber rollers of the at least two pairs of rollers have a hardness in a range of about 50 to 70 Shore A.
- the connecting roller may also be formed as a rubber roller, which is preferably provided with a sheath.
- the core of the connection roller preferably has a hardness in a range of about 50 to about 70 Shore A, whereas the shell has a hardness in a range of about 80 to about 100 Shore A.
- the shell can be formed, for example, from a steel shell.
- the individual layers of the surface product according to the invention may at least partially have a so-called “nested” structure, ie that the elevations obtained by the embossing by means of an embossing roller come to lie in corresponding recesses obtained by the second embossing roller in the further layer web. This can be done in particular when the density of the embossing points of the first roller and the second roller is about the same.
- a compound of the individual layer webs is obtained with the embossing device according to the invention such that neither a pure "nested" structure nor a pure "tip-to-tip” structure is present, ie such a structure in which the elevations, which by means of the one embossing roll is produced in the one layer web to come to lie on the surveys obtained by means of the further embossing roll on the further layer web.
- a higher volume of the surface product produced by means of the embossing device according to the invention is achieved.
- this multilayered layer web can likewise have a "nested” or a "tip-to-tip” structure, obtained by a preceding embossing with a further, third pair of rollers, but here again an irregular connection of the individual layer webs can be provided.
- the embossing pressure of the first and second roller pairs is in a range of about 4.0 bar to about 8.2 bar, preferably about 5.7 bar to about 6.3 bar.
- the embossing pressure is adjusted by adjusting the rubber roller in relation to the embossing roller, wherein either the rubber roller or the embossing roller is movably arranged in the embossing device.
- the embossing pressure is selected with regard to the material used and the embossing pattern to be achieved with a decorative pattern. Basically, the embossing nubs of the embossing rollers penetrate into the softer rubber material of the rubber rollers.
- the nip pressure in the embossing, both in the microembossing and the decorative pattern embossing in combination with a microembossing in a range of about 15 N / mm to about 25 N / mm, preferably up to about 20 N / mm.
- the line pressure is calculated from the applied pressure on the pneumatic cylinders of the roller pairs in multiplication by the length of the lever arm and divided by the embossing width, which is determined by the width of the embossing surface of the embossing roller.
- the embossing nubs which are arranged on the embossing rollers, a height in a range of about 0.7 mm to about 1.5 mm and for the production of handkerchiefs, a diameter of the embossing surface of the embossing points in a range of about 0.35 mm to about 0.7 mm, preferably up to about 0.55 mm.
- the embossing nubs which are arranged on the embossing rollers, a height in a range of about 1 mm to about 1.5 mm and a diameter of the embossing surface of the embossing points in a range of about 1 mm to about 1.5 mm, preferably about 1.3 mm, with round. Formation of the embossing points on.
- the diameter of the embossing dots or nubs may be in a range from about 0.35 mm to about 1.7 mm.
- these have a height in a range of about 1 mm to about 1.5 mm and a length of the major axis of the embossing surface of the embossing points in a range of about 1, 3 mm to about 1.7 mm, preferably about 1.5 mm, and a length of the minor axis the embossing surface of the embossing points in a range of about 0.9 mm to about 1.3 mm, preferably about 1.1 mm.
- the embossing points or nubs are formed frusto-conical and arranged on the surface of the embossing rollers, ie the foot portion thereof has a larger diameter than the actual embossing surface in the head region thereof.
- the embossing surface of the head region can itself be rounded or any other form raised, but the embossing surface can also be formed completely flat.
- the flanks of the embossing points are formed at an angle of about 8 ° to about 18 ° to each other. In such an expression of the embossing points, it is possible, especially when they are arranged on an embossing roll in the form of the predetermined decorative pattern selbiges form very sharp protruding.
- the embossing points or nubs can be arranged not only uniformly but also irregularly on the embossing rollers in the first regions, in particular if it is desired to emphasize the effect of the second regions achievable decorative patterns in its optical effect. It is particularly advantageous to increase the density of the embossing points or nubs in the immediate vicinity of the second regions in the first regions.
- the first to fifth line of embossing dots embossing dots or punches surrounding a decorative pattern has a height in a range of 1.0 mm to 1.5 mm, preferably 1.1 to 1.3 mm, whereas the others in the range between The embossing points or embossing nubs arranged in the respective decorative patterns have a height in a range from 0.7 mm to 0.9 mm.
- glue is applied only to those embossing points or embossing nubs which have the greater height. This has the great advantage of reducing the rigidity of the resulting embossed material.
- a colored glue which is applied exclusively to the embossing points or embossing nubs with the greater height, a beautiful visual effect can be achieved.
- the connecting roller and / or glue application roller is formed spirally or cylindrically, preferably spirally. In this way, a further increase in the softness and the volume of the manufactured surface product can be achieved.
- the embossing rollers are preferably made of steel.
- the surface of the embossing rollers is produced in a laser process, omitting the embossing points in the area of the decor pattern, or by setting the embossing points immediately in the form of the corresponding decorative pattern.
- it may also be provided to first produce an embossing roller with embossing points arranged symmetrically on it at a right angle to one another and staggered, and subsequently at least partially removing them in the region of the decorative pattern.
- parts of the individual embossing stop can also be left standing, so that embossing is carried out for example only by a halved head surface thereof.
- the present invention relates to an at least two-ply surface product, preferably at least three-ply, more preferably at least four-ply Surface product made with the embossing device according to the invention, having at least one microembossing with a number of embossing points in a number in a range of about 20 to about 70 per cm 2, preferably up to about 45 per cm 2 having layer and at least one further layer with first and second Areas, wherein the first areas have a plurality of embossing points in a number ranging from about 45 to about 70 per cm 2, and the second areas have no embossing points, the second areas covering not more than 40% of the layer area and not interconnected are.
- the non-connection of the second regions to one another makes it possible to form concrete individual patterns on the surface product, and surface products are obtained which take into account the area of the second regions relative to that surface of the first regions which have an outstanding optical effect.
- the micro-embossing points of the second layer are formed in color. As already described above, this results in an additional optical effect. Furthermore, it can also be provided that the second layer in turn consists of several individual layers, which were previously fed from a common or even separate unwinding the second pair of rollers.
- the surface product is preferably designed as a handkerchief, household paper, kitchen paper and / or toilet paper.
- Fig. 1 shows a schematic representation of a designated by the reference numeral 10 embossing device for producing a product at least two-ply 40.
- a first at least one layer ply web 24 of a rolling device 44.1 comprising a roll 46.1 and a guide roller 48.1, a first pair of rollers 12, which has a rubber roller 18 and an embossing roller 16 with embossing points (embossing nubs) 38.
- the embossing roll 16 has embossing points 38 uniformly arranged on the surface thereof with a density in a range of approximately 40 per cm 2.
- the embossing points are preferably arranged in a row in a symmetrical pattern at a right angle to each other, wherein the rows are also arranged offset from each other symmetrically.
- a second unwinding device 44.2 comprising a unwinding 46.2 and a deflection roller 48.2
- an at least single-ply layer web 30 is unwound and fed to the second pair of rollers of the embossing device 10.
- the layer web 30 is fed to the embossing roller 20 via a rubber roller 22, the embossing roller 20 likewise having embossing points 38.
- the embossing roll 20 is provided with first and second regions, the first regions of the layer web 30 imparting a microembossing and having symmetrically or asymmetrically arranged embossing points in a density of about 60 per cm 2.
- the second areas of the embossing roller 20, however, are formed without embossing points and have the shape of a decor.
- the elevations produced by the embossing points are provided with glue 34 by means of a gluing unit 32.
- the layer web 30 as well as the embossed layer web 24 via the first pair of rollers 12 and the second pair of rollers 14 a gap 17 is supplied, in which a compound of the layer webs 24 and 30 takes place.
- the formed composite is fed via the second embossing roll 20 to a marriage roll 36, which is also formed as a rubber roll but with a sheath hardness of about 90 Shore A, as opposed to a hardness of the rubber rolls 18 and 22 with a value of about 60 Shore A. Subsequently, the surface product formed 40 is led out of the embossing device.
- a combination of the first layer web 24 with the further layer web 30 in the form of a so-called "nested" structure is shown for the sake of simplicity.
- a merger of the individual layer webs can also be done in any other way, preferably a merge is such that neither a pure "nested” structure nor a pure "tip-to-tip” structure are obtained to the largest possible volume of the surface product 40 to be produced.
- Glue is applied in an amount of 0.438 g / cm 2 to the elevations of the second embossing roller 20 formed by the embossing points 38 by means of the gluing unit 32.
- the embossing roll 20 By means of the embossing roll 20, a coverage of about 3.53%, based on the top surface of the individual embossing points, the embossed layer web 30 is obtained. By means of the first embossing roll 16, a degree of coverage of about 6.8% is achieved.
- the distance between the embossing nubs of the second embossing roll 20 was about 1.29 mm, whereas the distance of the embossing points of the first embossing roll 16 was about 1.58 mm.
- Fig. 2 now shows a side view of the embossing roll 20, which has a plurality of embossing nubs.
- first regions 26, which merge into one another, are formed on the second embossing roll 20, which surround second regions 28, wherein these second regions 28 are not interconnected.
- Fig. 2 a view of the second embossing roller 20 with respect to a central axis 21st
- Fig. 3 now shows a detail D of Fig. 2
- the first areas 26 and second areas 28 are clearly visible.
- the second region 28 is designed in the form of a margaritte
- the first regions 26 have a multiplicity of embossing points 38 arranged at a right angle to one another, which are arranged offset in rows.
- Fig. 4 shows now along a section AA the Fig. 3 the formation of a single embossing point 38, which is approximately frusto-conical with flanks 42, which in toilet paper an angle W to each other by about 10 °, atskarollen about 15 °.
- the embossing point 38 is arranged on the embossing roller 20. It has a head surface for toilet paper with a diameter d of about 0.45 mm and a height h of about 0.8 mm, for kitchen paper the height h is for example 1.4 mm and the diameter d about 1.3 mm with round education.
- Fig. 5 shows an embodiment of the embossing roll 20 not according to the invention, in which case the second regions 28 are again in the form of a flower according to the decorative pattern free of embossing points, the embossing points are arranged here in the form of the decoration itself on the surface of the embossing roller 20.
- each individual subregion of the second region 28 is uniformly surrounded by an uninterrupted line of embossing points, whereby a very clear and beautiful decorative pattern is given to the surface product produced by means of the embossing device 10.
- the first regions 26 are arranged between the individual regions 28 and merge into one another, the second regions 28 are not connected to one another.
- the individual embossing points of the first regions 26 are arranged as uniformly as possible on the surface of the embossing roller 20 in order to obtain a relatively uniform overall appearance, in particular when applying a colored glue.
- the diameter of the embossing surface of the embossing points is slightly higher than in the embodiment according to Fig. 2 namely at 0.5 mm.
- embossing device By means of the embossing device according to the invention, it is advantageously possible to easily and simply entail a high quality embossed pattern, which is preferably made of a tissue and / or tissue-like material in the form of a tissue, a toilet paper, a kitchen paper and / or a household paper.
- Existing embossing devices can be retrofitted with appropriate embossing rollers with appropriate parameters. It should be noted that for the purposes of the present invention, any arrangement of the relevant Roll pairs to each other is possible, as well as a supply of the individual webs separated from several unwinding or can already be done together as a layer composite to the embossing device.
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Abstract
Description
Die vorliegende Erfindung betrifft eine Prägevorrichtung für mindestens zweilagige Flächenprodukte wie Toilettenpapier, Taschentücher oder dergleichen mit mindestens einem ersten und einem zweiten Walzenpaar, welche jeweils eine Prägewalze aufweisen.The present invention relates to an embossing device for at least two-ply surface products such as toilet paper, handkerchiefs or the like with at least a first and a second pair of rollers, each having an embossing roller.
Prägevorrichtungen der eingangs genannten Art sind in vielfältiger Weise aus dem Stand der Technik bekannt. Beispielsweise offenbart
Es besteht nun ein erhöhter Bedarf an zwei- oder mehrlagigen Flächenprodukten, insbesondere aus Tissue und/oder tissueähnlichen Materialien, wie beispielsweise Toilettenpapiere, Taschentücher, Küchentücher oder dergleichen, welche Dekormuster tragen. Hier ist es gewünscht, dass die jeweiligen Dekormuster sehr prägnant und scharf erscheinen, und gegebenenfalls dem Flächenprodukt auch zusätzlich noch mittels Farbe ein optischer Effekt hinzugegeben wird.There is now an increased demand for two-layered or multi-layered sheet products, in particular of tissue and / or tissue-like materials, such as toilet paper, handkerchiefs, kitchen towels or the like, which carry decorative patterns. Here, it is desired that the respective decorative patterns appear very concise and sharp, and optionally the surface product is additionally added by means of color an optical effect.
Im Sinne der vorliegenden Erfindung wird unter Tissue ein Erzeugnis verstanden, welches der DIN 6730 entspricht. Demnach ist Tissue ein Erzeugnis, welches ganz oder überwiegend aus Zellstofffasern besteht, mit einer feinen und weichen Kreppung, welches in geschlossener Formation in der Papiermaschine mit einem Trockengehalt von mehr als 90 % gekreppt wird, aus einer oder mehreren Lagen besteht, besonders saugfähig ist, eine flächenbezogene Masse der Einzellage von kleiner 5 g/m2 vor der Kreppung und eine Kreppnassdehnung grösser 5 % aufweist.For the purposes of the present invention, tissue is understood to mean a product which corresponds to DIN 6730. Accordingly, tissue is a product which consists wholly or predominantly of pulp fibers, with a fine and soft crepe, which is creped in a closed formation in the paper machine with a dry content of more than 90%, consists of one or more layers, is particularly absorbent, a surface mass of the individual layer of less than 5 g / m2 before creping and a creping wet stretch of more than 5%.
Im Sinne der vorliegenden Erfindung wird unter tissueähnlichem Material ein Material verstanden, welches im Unterschied zu Tissuematerial durch Veränderungen im Trockenvorgang hergestellt wird. Gemäss DIN 6730 ist tissueähnliches Material ein Erzeugnis überwiegend aus Zellstofffasem mit grosser und weiter Kreppung und offener Formation, welches in der Papiermaschine trocken gekreppt wird und aus einer oder mehreren Lagen besteht, wobei die flächenbezogene Masse einer Lage vor der Kreppung kleiner 25 g/m2 und die Nasskreppdehnung einer Lage nach Kreppung grösser 24 % ist. Das Material kann auch aus Altpapier hergestellt sein.For the purposes of the present invention, tissue-like material is understood as meaning a material which, in contrast to tissue material, is produced by changes in the drying process. According to DIN 6730, tissue-like material is a product predominantly made of pulp fibers with large and wide creping and open formation, which is creped dry in the paper machine and consists of one or more layers, the basis weight of a layer before creping less than 25 g / m2 and the wet crepe elongation of a layer after creping is greater than 24%. The material can also be made from waste paper.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Prägevorrichtung zur Verfügung zu stellen, mittels welcher einfach mit Dekormustem versehene Flächenprodukte in hoher Qualität herstellbar sind.It is therefore an object of the present invention to provide an embossing device, by means of which easily provided with decorative pattern surface products are produced in high quality.
Diese Aufgabe wird gelöst durch eine Prägevorrichtung für mindestens zweilagige Flächenprodukte wie Toilettenpapier, Taschentücher und dergleichen gemäß Anspruch 1.This object is achieved by an embossing device for at least two-ply surface products such as toilet paper, handkerchiefs and the like according to claim 1.
Die Lagenbahnen selbst können ein-, zwei-, drei- oder vierlagig, aber auch fünf- oder sechslagig, ausgebildet sein. Die Anordnung des ersten und zweiten Walzenpaares kann dabei in jeder technisch möglichen Art und Weise erfolgen. Dabei können beispielsweise die beiden Walzenpaare auf einer gemeinsamen Achse liegen und spiegelbildlich einander zugeordnet sein. Es ist jedoch beispielsweise auch möglich, dass die Gummiwalze seitlich versetzt zur Prägewalze angeordnet ist, und das weitere Walzenpaar entsprechend spiegelbildlich derart angeordnet ist, dass hier die beiden Prägewalzen auf einer ersten Ebene zu liegen kommen und die beiden Gummiwalzen in einer zur ersten Ebene versetzten zweiten Ebene. Zwischen den beiden Prägewalzen ist jeweils ein Spalt vorgesehen. Die erfindungsgemäße Prägevorrichtung kann darüber hinaus auch zwei oder sogar drei Leimwerke aufweisen und zur Herstellung von mindestens zweilagigen, bevorzugt mindestens dreilagigen, aber auch vier- oder fünflagigen Flächenprodukte verwendet werden. Die einzelnen Lagen werden dabei als Bahnen von Abrollvorrichtungen abgerollt, wobei hier die Bahnen auch bereits zweilagig oder aber sogar dreilagig vorkonfektioniert ausgebildet sein können.The layer webs themselves can be one-, two-, three- or four-ply, but also five- or six-ply, be formed. The arrangement of the first and second roller pair can be done in any technically possible manner. In this case, for example, the two pairs of rollers lie on a common axis and be associated with each other in mirror image. However, it is also possible, for example, that the rubber roller is arranged laterally offset from the embossing roller, and the other pair of rollers is arranged according to a mirror image such that here the two embossing rollers come to lie on a first plane and the two rubber rollers in a first plane offset second Level. In each case a gap is provided between the two embossing rollers. The embossing device according to the invention may moreover also have two or even three gluing units and be used for the production of at least two-ply, preferably at least three-ply, but also four- or five-ply surface products. The individual layers are thereby unrolled as webs of unwinding devices, in which case the webs can also be configured as double-layered or even three-layered in advance.
Durch die erfindungsgemäße Prägevorrichtung wird vorteilhafterweise erreicht, dass aufgrund der vorgesehenen Anzahl von Prägepunkten (auch Prägenoppen genannt) auf der Prägewalze des ersten Walzenpaares eine ausreichende Bauschigkeit und Weichheit der betreffenden Bahn mitgegeben wird, d.h. dass diese ein höheres Volumen aufweist als die mittels des zweiten Walzenpaares geprägte mindestens eine weitere Lagenbahn. Diese wird mittels der Prägewalze des zweiten Walzenpaares mit einem Dekormuster versehen. Durch die höhere Dichte der Prägepunkte wird hierbei eine sehr klare Darstellung des Dekormusters erzielt. Die Prägepunkte der der weiteren Lagenbahn das Dekor vermittelnden Prägewalze können dabei linear und im rechten Winkel zueinander angeordnet sein. Dabei sind die jeweiligen durch die Prägepunkte gebildeten Reihen bevorzugt symmetrisch zueinander versetzt ausgebildet. Das Dekormuster wird dabei bei der Prägewalze durch einfaches Auslassen der Prägepunkte an den entsprechenden Stellen hervorgerufen. In einer besonders bevorzugten Ausbildung gemäß der vorliegenden Erfindung sind jedoch die Prägepunkte nicht linear angeordnet, sondern in Form des Musters selbst auf der Prägewalze angeordnet. Hierdurch umgibt beispielsweise ein Blumenmotiv eine geschlossene bestimmte Anzahl von Prägepunkten in Form eben einer Blume, wodurch das Prägemotiv im fertigen Flächenprodukt für den Betrachter klarer und deutlicher wirkt. Gleichzeitig wird auch die Weichheit des Produktes erhöht. Aber nicht nur das Dekormotiv als ganzes, sondern gegebenenfalls auch einzelne Bestandteile desselben können in der bevorzugten Ausführungsform von einer geschlossenen Linie von Prägenoppen umgeben sein. Das Dekormuster selbst kann jedwede Ausgestaltung aufweisen, es kann beispielsweise in Form einer Blume, eines Vogels, eines Herzens etc. ausgestaltet sein.By embossing device according to the invention is advantageously achieved that due to the intended number of embossing points (also embossing nubs called) on the embossing roll of the first pair of rolls sufficient bulk and softness of the relevant web is given, ie that this has a higher volume than that by means of the second pair of rollers embossed at least one further layer web. This is provided by means of the embossing roller of the second pair of rollers with a decorative pattern. Due to the higher density of the embossing points here a very clear representation of the decor pattern is achieved. The embossing points of the embossing roller which mediates the decoration of the further layer web can be arranged linearly and at right angles to each other. In this case, the respective rows formed by the embossing points are preferably formed symmetrically offset from one another. The decor pattern is caused in the embossing roll by simply omitting the embossing points at the appropriate places. In a special preferred embodiment according to the present invention, however, the embossing points are not arranged linearly, but arranged in the form of the pattern itself on the embossing roller. As a result, for example, a flower motif surrounds a closed certain number of embossing points in the form of just a flower, whereby the embossed motif in the finished surface product for the viewer is clearer and clearer. At the same time, the softness of the product is also increased. But not only the decorative motif as a whole, but possibly also individual components thereof can be surrounded by a closed line of embossing nubs in the preferred embodiment. The decor pattern itself can have any configuration, it can be designed, for example, in the form of a flower, a bird, a heart, etc.
Dadurch, dass das mindestens eine Leimwerk benachbart der das Dekormuster aufbringenden Prägewalze angeordnet ist, wird vorteilhafterweise erreicht, dass die das Motiv aufweisenden Bereiche der entsprechenden Lagenbahn nicht mit Leim versehen werden, da es hierdurch bei Zusammenführung der verschiedenen Lagenbahnen zu einer undeutlicheren Ausbildung des Prägemotivs kommt. Bevorzugt ist die erfindungsgemäße Prägevorrichtung derart ausgestaltet, dass diejenige Lage, welche das Dekormuster trägt, auf einer Außenseite des gebildeten fertigen Flächenproduktes zu liegen kommt, wobei weiter bevorzugt ist, dass die Seite der Bahn, welche unmittelbar der Prägewalze des zweiten Walzenpaares anliegt, eine Außenseite des Flächenproduktes bildet.Because the at least one gluing unit is arranged adjacent to the embossing roller applying the decorative pattern, it is advantageously achieved that the areas of the corresponding layer web having the motif are not provided with glue, since this leads to an unclear formation of the embossing motif when the various layer webs are brought together , Preferably, the embossing device according to the invention is configured such that the layer which carries the decorative pattern comes to lie on an outer side of the formed finished surface product, wherein it is further preferred that the side of the web which bears directly on the embossing roller of the second pair of rollers, an outer side of the surface product forms.
In einer bevorzugten Ausführungsform der erfindungsgemäßen Prägevorrichtung bringt das Leimwerk mit Farbe versetzten und/oder farbigen Leim auf. Dabei kann derart vorgegangen werden, dass eingesetzter klarer oder weißfarbiger Leim nachträglich mit einem entsprechenden Färbemittel versetzt wird, oder aber sogleich ein farblich ausgebildeter Leim aufgetragen wird. Hierdurch wird ein zusätzlicher optischer Effekt erzielt, indem nämlich das durch die Prägepunkte der Prägewalze des zweiten Walzenpaares gebildete Mikroprägemuster durch den farbigen Leim für den Betrachter und Benutzer sichtbar wird. Hierdurch wird dem Flächenprodukt eine gleichmäßige Hintergrundgestaltung mitgegeben, wodurch das Dekormuster noch stärker für den Betrachter hervortritt.In a preferred embodiment of the embossing device according to the invention, the gluing unit applies color-added and / or colored glue. In this case, it is possible to proceed in such a way that the clear or white-colored glue used is subsequently mixed with a corresponding colorant, or else immediately a color-coded glue is applied. In this way, an additional optical effect is achieved, namely by the microembossing pattern formed by the embossing points of the embossing roller of the second roller pair is visible through the colored glue for the viewer and user. As a result, the surface product is given a uniform background design, whereby the decorative pattern emerges even more for the viewer.
Weiter bevorzugt weisen die Gummiwalzen der mindestens zwei Walzenpaare eine Härte in einem Bereich von etwa 50 bis 70 Shore A auf. Die Verbindungswalze kann ebenfalls als Gummiwalze ausgebildet sein, wobei diese bevorzugt mit einer Hülle versehen ist. Der Kern der Verbindungswalze weist dabei bevorzugt eine Härte in einem Bereich von etwa 50 bis etwa 70 Shore A auf, wohingegen die Hülle eine Härte in einem Bereich von etwa 80 bis etwa 100 Shore A aufweist. Die Hülle kann dabei jedoch beispielsweise auch aus einem Stahlmantel gebildet sein. Durch Versehung der Verbindungswalze mit einer höheren Härte wird eine sichere und gleichmäßig feste Verbindung der einzelnen Lagen erzielt. Die einzelnen Lagen des erfindungsgemäßen Flächenproduktes können dabei zumindest teilweise eine so genannte "Nested"-Struktur aufweisen, d.h. dass die durch die Prägung mittels der einen Prägewalze erzielten Erhebungen in entsprechenden, durch die zweite Prägewalze in der weiteren Lagenbahn erhaltenen Vertiefungen zu liegen kommen. Dies kann insbesondere dann erfolgen, wenn die Dichte der Prägepunkte der ersten Walze und der zweiten Walze in etwa gleich ist. Bevorzugt wird jedoch eine Verbindung der einzelnen Lagenbahnen mit der erfindungsgemäßen Prägevorrichtung derart erhalten, dass weder eine reine "Nested"-Struktur noch eine reine "Tip-to-Tip"-Struktur vorliegt, d.h. eine solche Struktur, bei welcher die Erhebungen, welche mittels der einen Prägewalze in der einen Lagenbahn erzeugt wird, auf den mittels der weiteren Prägewalze auf der weiteren Lagenbahn erhaltenen Erhebungen zu liegen kommen. Bei dieser vorteilhaften Ausgestaltung wird ein höheres Volumen des mittels der erfindungsgemäßen Prägevorrichtung hergestellten Flächenproduktes erzielt. Ist eine Lagenbahn bereits mehrlagig ausgebildet, wird diese beispielsweise von einer Abrollvorrichtung als zwei- oder dreilagiger Verband der Prägevorrichtung zugeführt, so kann diese mehrlagige Lagenbahn ebenfalls eine "Nested"- oder eine "Tip-to-Tip"-Struktur aufweisen, erhalten durch eine vorangegangene Prägung mit einem weiteren, dritten Walzenpaar, jedoch kann auch hier wiederum eine unregelmäßige Verbindung der einzelnen Lagenbahnen vorgesehen sein.More preferably, the rubber rollers of the at least two pairs of rollers have a hardness in a range of about 50 to 70 Shore A. The connecting roller may also be formed as a rubber roller, which is preferably provided with a sheath. The core of the connection roller preferably has a hardness in a range of about 50 to about 70 Shore A, whereas the shell has a hardness in a range of about 80 to about 100 Shore A. However, the shell can be formed, for example, from a steel shell. By providing the connecting roller with a higher hardness, a secure and uniformly firm connection of the individual layers is achieved. The individual layers of the surface product according to the invention may at least partially have a so-called "nested" structure, ie that the elevations obtained by the embossing by means of an embossing roller come to lie in corresponding recesses obtained by the second embossing roller in the further layer web. This can be done in particular when the density of the embossing points of the first roller and the second roller is about the same. Preferably, however, a compound of the individual layer webs is obtained with the embossing device according to the invention such that neither a pure "nested" structure nor a pure "tip-to-tip" structure is present, ie such a structure in which the elevations, which by means of the one embossing roll is produced in the one layer web to come to lie on the surveys obtained by means of the further embossing roll on the further layer web. In this advantageous embodiment, a higher volume of the surface product produced by means of the embossing device according to the invention is achieved. If a layer web has already been formed in multiple layers, this is fed, for example, from a unwinding device as a two- or three-layered bandage of the embossing device, then this multilayered layer web can likewise have a "nested" or a "tip-to-tip" structure, obtained by a preceding embossing with a further, third pair of rollers, but here again an irregular connection of the individual layer webs can be provided.
Vorzugsweise liegt der Prägedruck der ersten und zweiten Walzenpaare in einem Bereich von etwa 4,0 Bar bis etwa 8,2 bar, bevorzugt etwa 5,7 Bar bis etwa 6,3 bar. Der Prägedruck wird dabei durch Einstellung der Gummiwalze im Verhältnis zu der Prägewalze eingestellt, wobei entweder die Gummiwalze oder aber die Prägewalze beweglich in der Prägevorrichtung angeordnet ist. Dabei wird der Prägedruck im Hinblick auf das eingesetzte Material und das zu erzielende Prägemuster mit einem Dekormuster ausgewählt. Grundsätzlich dringen dabei die Prägenoppen der Prägewalzen in das weichere Gummimaterial der Gummiwalzen ein.Preferably, the embossing pressure of the first and second roller pairs is in a range of about 4.0 bar to about 8.2 bar, preferably about 5.7 bar to about 6.3 bar. The embossing pressure is adjusted by adjusting the rubber roller in relation to the embossing roller, wherein either the rubber roller or the embossing roller is movably arranged in the embossing device. In this case, the embossing pressure is selected with regard to the material used and the embossing pattern to be achieved with a decorative pattern. Basically, the embossing nubs of the embossing rollers penetrate into the softer rubber material of the rubber rollers.
Vorzugsweise liegt der Liniendruck bei der Prägung, und zwar sowohl bei der Mikroprägung als auch bei der Dekormusterprägung in Kombination mit einer Mikroprägung, in einem Bereich von etwa 15 N/mm bis etwa 25 N/mm, bevorzugt bis etwa 20 N/mm. Der Liniendruck wird dabei errechnet aus dem anliegenden Druck an den Pneumatikzylindern der Walzenpaare in Multiplikation mit der Länge des Hebelarmes und dividiert durch die Prägebreite, welche durch die Breite der Prägefläche der Prägewalze bestimmt ist.Preferably, the nip pressure in the embossing, both in the microembossing and the decorative pattern embossing in combination with a microembossing, in a range of about 15 N / mm to about 25 N / mm, preferably up to about 20 N / mm. The line pressure is calculated from the applied pressure on the pneumatic cylinders of the roller pairs in multiplication by the length of the lever arm and divided by the embossing width, which is determined by the width of the embossing surface of the embossing roller.
Weiter bevorzugt weisen die Prägepunkte bzw. Prägenoppen, welche auf den Prägewalzen angeordnet sind, eine Höhe in einem Bereich von etwa 0,7 mm bis etwa 1,5 mm und für die Herstellung von Taschentüchern einen Durchmesser der Prägefläche der Prägepunkte in einem Bereich von etwa 0,35 mm bis etwa 0,7 mm, bevorzugt bis etwa 0,55 mm, auf. Für die Herstellung von Küchenpapier, insbesondere in Rollenform, weisen die Prägepunkte bzw. Prägenoppen, welche auf den Prägewalzen angeordnet sind, eine Höhe in einem Bereich von etwa 1 mm bis etwa 1,5 mm und einen Durchmesser der Prägefläche der Prägepunkte in einem Bereich von etwa 1 mm bis etwa 1,5 mm, bevorzugt etwa 1,3 mm, bei runder.Ausbildung der Prägepunkte auf. Grundsätzlich kann der Durchmesser der Prägepunkte- bzw. noppen in einem Bereich von etwa 0,35 mm bis etwa 1,7 mm liegen. Bei der Herstellung von Küchenpapier, insbesondere in Rollenform, mit oval ausgebildeten Prägepunkte bzw. Prägenoppen weisen diese eine Höhe in einem Bereich von etwa 1 mm bis etwa 1,5 mm und eine Länge der Hauptachse der Prägefläche der Prägepunkte in einem Bereich von etwa 1,3 mm bis etwa 1,7 mm, bevorzugt etwa 1,5 mm, und eine Länge der Nebenachse der Prägefläche der Prägepunkte in einem Bereich von etwa 0,9 mm bis etwa 1,3 mm, bevorzugt etwa 1,1 mm, auf. Bevorzugt sind dabei die Prägepunkte bzw. -noppen kegelstumpfförmig ausgebildet und an der Oberfläche der Prägewalzen angeordnet, d.h. der Fußbereich derselben weist einen größeren Durchmesser auf als die eigentliche Prägefläche im Kopfbereich derselben. Die Prägefläche des Kopfbereiches kann dabei selbst abgerundet oder jeder sonstigen Form erhaben ausgebildet sein, jedoch kann die Prägefläche auch vollkommen eben ausgebildet sein. Vorzugsweise sind die Flanken der Prägepunkte in einem Winkel von etwa 8 ° bis etwa 18 ° zueinander ausgebildet. Bei einer derartigen Ausprägung der Prägepunkte ist es möglich, insbesondere bei Anordnung derselben auf einer Prägewalze in Form des vorgegebenen Dekormusters selbiges sehr scharf hervortretend auszubilden. Die Prägepunkte bzw. -noppen können in den ersten Bereichen nicht nur gleichmäßig, sondern auch unregelmäßig auf den Prägewalzen angeordnet sein, insbesondere, wenn gewünscht ist, das durch die zweiten Bereiche erzielbare Dekormuster in seiner optischen Wirkung noch hervorzuheben. Besonders vorteilhaft ist es dabei, in unmittelbarer Umgebung der zweiten Bereiche die Dichte der Prägepunkte bzw. -noppen in den ersten Bereichen zu erhöhen.More preferably, the embossing nubs, which are arranged on the embossing rollers, a height in a range of about 0.7 mm to about 1.5 mm and for the production of handkerchiefs, a diameter of the embossing surface of the embossing points in a range of about 0.35 mm to about 0.7 mm, preferably up to about 0.55 mm. For the production of kitchen paper, in particular in roll form, the embossing nubs, which are arranged on the embossing rollers, a height in a range of about 1 mm to about 1.5 mm and a diameter of the embossing surface of the embossing points in a range of about 1 mm to about 1.5 mm, preferably about 1.3 mm, with round. Formation of the embossing points on. In principle, the diameter of the embossing dots or nubs may be in a range from about 0.35 mm to about 1.7 mm. In the production of kitchen paper, especially in roll form, with oval embossing nubs, these have a height in a range of about 1 mm to about 1.5 mm and a length of the major axis of the embossing surface of the embossing points in a range of about 1, 3 mm to about 1.7 mm, preferably about 1.5 mm, and a length of the minor axis the embossing surface of the embossing points in a range of about 0.9 mm to about 1.3 mm, preferably about 1.1 mm. Preferably, the embossing points or nubs are formed frusto-conical and arranged on the surface of the embossing rollers, ie the foot portion thereof has a larger diameter than the actual embossing surface in the head region thereof. The embossing surface of the head region can itself be rounded or any other form raised, but the embossing surface can also be formed completely flat. Preferably, the flanks of the embossing points are formed at an angle of about 8 ° to about 18 ° to each other. In such an expression of the embossing points, it is possible, especially when they are arranged on an embossing roll in the form of the predetermined decorative pattern selbiges form very sharp protruding. The embossing points or nubs can be arranged not only uniformly but also irregularly on the embossing rollers in the first regions, in particular if it is desired to emphasize the effect of the second regions achievable decorative patterns in its optical effect. It is particularly advantageous to increase the density of the embossing points or nubs in the immediate vicinity of the second regions in the first regions.
Erfindungsgemäß weist die erste bis fünfte ein Dekormuster umgebende Linie von Prägepunkten bzw. Prägenoppen oder Punke eine Höhe in einem Bereich von 1,0 mm bis 1,5 mm, bevorzugt 1,1 bis 1,3 mm auf, wohingegen die übrigen im Bereich zwischen den jeweiligen Dekormustern angeordneten Prägepunkte bzw. Prägenoppen eine Höhe in einem Bereich von 0,7 mm bis 0,9 mm aufweisen. Durch eine derartige Ausgestaltung kann einerseits erreicht werden, dass Leim nur auf diejenigen Prägepunkte bzw. Prägenoppen aufgebracht wird, welche die größere Höhe aufweisen. Dies weist den großen Vorteil auf, dass hierdurch die Steifigkeit des erhaltenen geprägten Materiales verringert wird. Zudem kann durch den Einsatz eines farbigen Leims, welcher ausschließlich auf die Prägepunkte bzw. Prägenoppen mit der größeren Höhe aufgebracht wird, ein schöner optischer Effekt erzielt werden.According to the invention, the first to fifth line of embossing dots embossing dots or punches surrounding a decorative pattern has a height in a range of 1.0 mm to 1.5 mm, preferably 1.1 to 1.3 mm, whereas the others in the range between The embossing points or embossing nubs arranged in the respective decorative patterns have a height in a range from 0.7 mm to 0.9 mm. By means of such a configuration, on the one hand, it can be achieved that glue is applied only to those embossing points or embossing nubs which have the greater height. This has the great advantage of reducing the rigidity of the resulting embossed material. In addition, by using a colored glue, which is applied exclusively to the embossing points or embossing nubs with the greater height, a beautiful visual effect can be achieved.
In einer bevorzugten Ausführungsform ist die Verbindungswalze und/oder Leimauftragswalze spiralförmig oder zylindrisch, bevorzugt spiralförmig, ausgebildet. Hierdurch kann eine weitere Steigerung der Weichheit und des Volumens des hergestellten Flächenproduktes erzielt werden.In a preferred embodiment, the connecting roller and / or glue application roller is formed spirally or cylindrically, preferably spirally. In this way, a further increase in the softness and the volume of the manufactured surface product can be achieved.
Die Prägewalzen sind bevorzugt aus Stahl gefertigt. Die Oberfläche der Prägewalzen wird dabei in einem Laser-Verfahren hergestellt, unter Weglassung der Prägepunkte im Bereich des Dekormusters, oder aber durch Setzung der Prägepunkte sogleich in Form des entsprechenden Dekormusters. Es kann jedoch auch vorgesehen sein, zunächst eine Prägewalze mit symmetrisch auf dieser im rechten Winkel zueinander und versetzt angeordneten Prägepunkten herzustellen, und diese nachfolgend im Bereich des Dekormusters zumindest teilweise abzutragen. Dabei können auch Teile des einzelnen Prägenoppens stehen bleiben, so dass eine Prägung nur beispielsweise durch eine halbierte Kopffläche desselben vorgenommen wird. Des Weiteren betrifft die vorliegende Erfindung ein mindestens zweilagiges Flächenprodukt, bevorzugt mindestens dreilagiges, weiter bevorzugt mindestens vierlagiges Flächenprodukt, hergestellt mit der erfindungsgemäßen Prägevorrichtung, mit mindestens einer eine Mikroprägung mit einer Anzahl von Prägepunkten in einer Anzahl in einem Bereich von etwa 20 bis etwa 70 pro cm2, bevorzugt bis etwa 45 pro cm2 aufweisenden Lage und mindestens einer weiteren Lage mit ersten und zweiten Bereichen, wobei die ersten Bereiche eine Vielzahl von Prägepunkten in einer Anzahl in einem Bereich von etwa 45 bis etwa 70 pro cm2 aufweisen, und die zweiten Bereiche keine Prägepunkte aufweisen, wobei die zweiten Bereiche nicht mehr als 40 % der Lagenfläche bedecken und nicht untereinander verbunden sind. Durch die Nichtverbindung der zweiten Bereiche untereinander ist die Ausbildung von konkreten Einzelmustem auf dem Flächenprodukt ermöglicht, und es werden unter Berücksichtigung der Fläche der zweiten Bereiche im Verhältnis zu derjenigen Fläche der ersten Bereiche Flächenprodukte erhalten werden, welche eine hervorragende optische Wirkung aufweisen.The embossing rollers are preferably made of steel. The surface of the embossing rollers is produced in a laser process, omitting the embossing points in the area of the decor pattern, or by setting the embossing points immediately in the form of the corresponding decorative pattern. However, it may also be provided to first produce an embossing roller with embossing points arranged symmetrically on it at a right angle to one another and staggered, and subsequently at least partially removing them in the region of the decorative pattern. In this case, parts of the individual embossing stop can also be left standing, so that embossing is carried out for example only by a halved head surface thereof. Furthermore, the present invention relates to an at least two-ply surface product, preferably at least three-ply, more preferably at least four-ply Surface product made with the embossing device according to the invention, having at least one microembossing with a number of embossing points in a number in a range of about 20 to about 70 per cm 2, preferably up to about 45 per cm 2 having layer and at least one further layer with first and second Areas, wherein the first areas have a plurality of embossing points in a number ranging from about 45 to about 70 per cm 2, and the second areas have no embossing points, the second areas covering not more than 40% of the layer area and not interconnected are. The non-connection of the second regions to one another makes it possible to form concrete individual patterns on the surface product, and surface products are obtained which take into account the area of the second regions relative to that surface of the first regions which have an outstanding optical effect.
Bevorzugt kann dabei vorgesehen werden, dass die Mikroprägepunkte der zweiten Lage farbig ausgebildet sind. Wie bereits schon vorstehend beschrieben, wird hierdurch ein zusätzlicher optischer Effekt erzielt. Des Weiteren kann auch vorgesehen werden, dass die zweite Lage bereits für sich wiederum aus mehreren Einzellagen besteht, welche vorher von einer gemeinsamen oder aber auch getrennten Abrollung dem zweiten Walzenpaar zugeführt wurden. Das Flächenprodukt ist dabei bevorzugt als Taschentuch, Haushaltspapier, Küchenpapier und/oder Toilettenpapier ausgebildet.It can preferably be provided that the micro-embossing points of the second layer are formed in color. As already described above, this results in an additional optical effect. Furthermore, it can also be provided that the second layer in turn consists of several individual layers, which were previously fed from a common or even separate unwinding the second pair of rollers. The surface product is preferably designed as a handkerchief, household paper, kitchen paper and / or toilet paper.
Diese und weitere Vorteile der vorliegenden Erfindung werden anhand der nachfolgenden Figuren näher erläutert. Es zeigen:
-
Fig. 1 :
eine schematische Ansicht einer nicht erfindungsgemäßen Prägevorrichtung; -
Fig. 2 :
eine Ansicht der Oberfläche der zweiten Prägewalze gemäßFig. 1 ; -
Fig. 3 :
eine Detailansicht D derFig. 2 ; -
Fig. 4 :
eine Ansicht entlang des Schnittes A-A derFig. 3 ; und -
Fig. 5 :
eine Ansicht der Oberfläche einer nicht erfindungsgemäßen ausgebildeten zweiten Prägewalze gemäßFig. 1 ;
-
Fig. 1 :
a schematic view of a stamping device not according to the invention; -
Fig. 2 :
a view of the surface of the second embossing roll according toFig. 1 ; -
Fig. 3 :
a detailed view D theFig. 2 ; -
Fig. 4 :
a view along the section AA theFig. 3 ; and -
Fig. 5 :
a view of the surface of a not according to the invention formed second embossing roll according toFig. 1 ;
Zunächst sei darauf hingewiesen, dass die Erfindung nicht auf die in den einzelnen Figuren gezeigten Merkmalskombinationen beschränkt ist. Vielmehr sind die jeweils in der Beschreibung einschließlich der Figurenbeschreibung offenbarten Merkmale mit denjenigen in den Figuren angegebenen kombinierbar.It should first be pointed out that the invention is not restricted to the combinations of features shown in the individual figures. Rather, the features disclosed in the description including the description of the figures can be combined with those indicated in the figures.
Von einer zweiten Abrollvorrichtung 44.2 umfassend eine Abrollung 46.2 und eine Umlenkrolle 48.2 wird eine mindestens einlagige Lagenbahn 30 abgewickelt und dem zweiten Walzenpaar der Prägevorrichtung 10 zugeführt. Über eine Gummiwalze 22 wird die Lagenbahn 30 der Prägewalze 20 zugeführt, wobei die Prägewalze 20 ebenfalls Prägepunkte 38 aufweist. Dabei ist die Prägewalze 20 jedoch mit ersten und zweiten Bereichen versehen, wobei die ersten Bereiche der Lagenbahn 30 eine Mikroprägung aufgeben und symmetrisch oder unsymmetrisch zueinander angeordnete Prägepunkte in einer Dichte von etwa 60 pro cm2 aufweisen. Die zweiten Bereiche der Prägewalze 20 hingegen sind ohne Prägepunkte ausgebildet und weisen die Form eines Dekors auf. Nachfolgend der Prägung der weiteren Lagenbahn 30 werden die durch die Prägepunkte erzeugten Erhebungen mittels eines Leimwerkes 32 mit Leim 34 versehen. Anschließend wird die Lagenbahn 30 ebenso wie die geprägte Lagenbahn 24 über das erste Walzenpaar 12 und das zweite Walzenpaar 14 einem Spalt 17 zugeführt, in welchem eine Verbindung der Lagenbahnen 24 und 30 erfolgt. Nachfolgend dieser Zusammenführung wird der gebildete Verbund über die zweite Prägewalze 20 einer Verbindungswalze ("marriage roll") 36 zugeleitet, welche ebenfalls als Gummiwalze ausgebildet ist, jedoch mit einer Härte der Umhüllung von etwa 90 Shore A im Unterschied zu einer Härte der Gummiwalzen 18 und 22 mit einem Wert von etwa 60 Shore A. Anschließend wird das gebildete Flächenprodukt 40 aus der Prägevorrichtung herausgeführt.From a second unwinding device 44.2 comprising a unwinding 46.2 and a deflection roller 48.2, an at least single-
In
Der Abstand der Prägenoppen der zweiten Prägewalze 20 betrug dabei etwa 1,29 mm, wohingegen der Abstand der Prägepunkte der ersten Prägewalze 16 etwa 1,58 mm betrug.The distance between the embossing nubs of the
Mittels der erfindungsgemäßen Prägevorrichtung ist es vorteilhafterweise möglich, einem Flächenprodukt einfach und unkompliziert qualitativ hochwertige Prägemuster mitzugeben, welches bevorzugt aus einem Tissue und/oder tissueähnlichen Material in Form eines Taschentuches, eines Toilettenpapiers, eines Küchenpapiers und/oder eines Haushaltspapiers hergestellt ist. Bestehende Prägevorrichtungen können nachträglich mit entsprechenden Prägewalzen mit entsprechenden Parametern ausgestattet werden. Dabei ist zu beachten, dass im Sinne der vorliegenden Erfindung jedwede Anordnung der betreffenden Walzenpaare zueinander möglich ist, als auch eine Zuführung der einzelnen Bahnen getrennt von mehreren Abrollvorrichtungen oder aber bereits zusammen als Lagenverbund zu der Prägevorrichtung erfolgen kann.By means of the embossing device according to the invention, it is advantageously possible to easily and simply entail a high quality embossed pattern, which is preferably made of a tissue and / or tissue-like material in the form of a tissue, a toilet paper, a kitchen paper and / or a household paper. Existing embossing devices can be retrofitted with appropriate embossing rollers with appropriate parameters. It should be noted that for the purposes of the present invention, any arrangement of the relevant Roll pairs to each other is possible, as well as a supply of the individual webs separated from several unwinding or can already be done together as a layer composite to the embossing device.
Claims (15)
- Embossing device (10) for at least two-layer planar products (40) such as toilet paper, facial tissue or the like,
with at least one first and at least one second roller couple (12, 14), each formed from an embossing roller (16, 20) and a squeezer (18, 22), wherein embossing roller (16) of first couple (12) has a plurality of embossing points (38) uniformly distributed over its entire embossing surface in a number of roughly 20 to roughly 70 per cm2, for producing a two-dimensional micro-embossing on at least one layer web (24), and wherein embossing roller (20) of second couple (14) has first and second areas (26, 28) distributed over its embossing surface, wherein first areas (26) have a plurality of embossing points (38) in a number of roughly 45 to roughly 70 per cm2 to produce a two-dimensional micro-embossing on at least one additional layer web (30), and second areas (28) have no embossing points, wherein second areas (28) constitute not more than 40% of the entire embossing surface and are not interconnected, wherein a first to fifth line of embossing points (38) of the first areas (26) surrounding a decorative pattern has a height in a range of 1.0 to 1.5 mm, and the remaining embossing points (38) of the first areas (26), arranged in an area between the respective decorative patterns have a height in a range of 0.7 to 0.9 mm,- with at least one gluing station (32), which is arranged adjacent to embossing roller (20) of first couple (14) and downstream of the corresponding squeezer (18), and by means of which glue (34) is applied to embossing points (38) of embossing roller (20).- wherein embossing rollers (16, 20) are arranged relative to one another forming a nip (17) to bring the embossed layer webs (24, 30) together and- wherein a joining roller (36) is arranged downstream adjacent to embossing roller (16) of first pair (12) to form a layer connection of layer webs (24, 30). - Embossing device according to Claim 1, characterized in that gluing station (32) applies colored glue and/or glue mixed with colorant.
- Embossing device according to one of the preceding claims, characterized in that the squeezers (18, 22) of first and second couples (12, 14) have a hardness in a range of roughly 50 to roughly 70 Shore A.
- Embossing device according to one of the preceding claims, characterized in that the embossing pressure of roller couples (12, 14) lies in a range of roughly 4.0 bar to roughly 8.2 bar.
- Embossing device according to one of the preceding claims, characterized in that the line pressure during the embossing lies in a range of roughly 15 N/mm to roughly 25 N/mm.
- Embossing device according to one of the preceding claims, characterized in that the diameter of the embossing surface of embossing points (38) lies in a range of roughly 0.35 mm to roughly 1.7 mm.
- Embossing device according to one of the preceding claims, characterized in that embossing points (38) are shaped in the form of a truncated cone.
- Embossing device according to one of the preceding claims, characterized in that the flanks (42) of embossing points (38) are formed at an angle of roughly 8° to roughly 18° with respect to one another.
- Embossing device according to one of the preceding claims, characterized in that joining roller (36) and/or the glue-application roller is formed cylindrically or in a spiral shape.
- At least two-layer planar product, produced with a device according to one of Claims 1-9, with at least one layer having a micro-embossing with a number of embossing points in a range of roughly 20 to roughly 45 per cm2, and at least one additional layer with first and second areas, wherein the first areas have a plurality of embossing points in a number of roughly 45 to roughly 70 per cm2, and the second areas have no embossing points, wherein the second areas cover not more than 40% of the layer surface and are not interconnected.
- Planar product according to Claim 10, characterized in that the micro-embossing points of the second layer are formed in color.
- Planar product according to one of Claims 10 or 11, characterized in that it is at least three-layered.
- Planar product according to one of Claims 10-12, characterized in that the second areas are designed in the form of a decorative pattern.
- Planar product according to one of Claims 10-13, characterized in that layer having the second areas forms an outer layer.
- Planar product according to one of Claims 10-14, characterized in that it is a facial tissue, a paper towel and/or toilet paper.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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SI200730034T SI1991411T1 (en) | 2006-03-08 | 2007-03-07 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
PL07711816T PL1991411T5 (en) | 2006-03-08 | 2007-03-07 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006010709A DE102006010709A1 (en) | 2006-03-08 | 2006-03-08 | Embossing device for at least two-ply surface products such as toilet paper, handkerchiefs o. |
PCT/EP2007/001945 WO2007101668A2 (en) | 2006-03-08 | 2007-03-07 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
Publications (3)
Publication Number | Publication Date |
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EP1991411A2 EP1991411A2 (en) | 2008-11-19 |
EP1991411B1 EP1991411B1 (en) | 2009-05-06 |
EP1991411B2 true EP1991411B2 (en) | 2018-12-26 |
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Application Number | Title | Priority Date | Filing Date |
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EP07711816.4A Not-in-force EP1991411B2 (en) | 2006-03-08 | 2007-03-07 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
Country Status (18)
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US (1) | US8708020B2 (en) |
EP (1) | EP1991411B2 (en) |
JP (1) | JP4942772B2 (en) |
CN (1) | CN101394992B (en) |
AT (1) | ATE430653T1 (en) |
CA (1) | CA2644534C (en) |
DE (2) | DE102006010709A1 (en) |
DK (1) | DK200600197U3 (en) |
ES (1) | ES2325606T3 (en) |
FI (1) | FI7266U1 (en) |
IT (1) | ITRM20060167U1 (en) |
NO (1) | NO20083960L (en) |
PL (1) | PL1991411T5 (en) |
PT (1) | PT1991411E (en) |
RU (1) | RU2408463C2 (en) |
SI (1) | SI1991411T1 (en) |
UA (1) | UA96968C2 (en) |
WO (1) | WO2007101668A2 (en) |
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JP3756877B2 (en) * | 2002-08-09 | 2006-03-15 | 大王製紙株式会社 | Patterned thin leaf sanitary paper and laminated paper using it |
ITFI20030208A1 (en) * | 2003-08-01 | 2005-02-02 | Perini Fabio Spa | METHOD AND DEVICE FOR THE PRODUCTION OF A PRODUCT |
JP4464123B2 (en) * | 2003-12-18 | 2010-05-19 | 日清紡ホールディングス株式会社 | Embossing method |
CN2715982Y (en) * | 2004-03-24 | 2005-08-10 | 陆德昌 | Gluing and embossing device used for toilet paper rewinding machine |
ITFI20040143A1 (en) * | 2004-06-25 | 2004-09-25 | Perini Fabio Spa | AN ANALOG, PRINTED AND EMBOSSED PAPER OR PRODUCT NAPKIN |
JP2006045690A (en) * | 2004-07-30 | 2006-02-16 | Daio Paper Corp | Method for producing sanitary tissue |
-
2006
- 2006-03-08 DE DE102006010709A patent/DE102006010709A1/en not_active Withdrawn
- 2006-07-20 DK DK200600197U patent/DK200600197U3/en not_active IP Right Cessation
- 2006-07-31 FI FI20060311U patent/FI7266U1/en not_active IP Right Cessation
- 2006-09-22 IT IT000167U patent/ITRM20060167U1/en unknown
-
2007
- 2007-03-07 SI SI200730034T patent/SI1991411T1/en unknown
- 2007-03-07 US US12/282,034 patent/US8708020B2/en not_active Expired - Fee Related
- 2007-03-07 JP JP2008557659A patent/JP4942772B2/en not_active Expired - Fee Related
- 2007-03-07 DE DE502007000705T patent/DE502007000705D1/en active Active
- 2007-03-07 PL PL07711816T patent/PL1991411T5/en unknown
- 2007-03-07 ES ES07711816T patent/ES2325606T3/en active Active
- 2007-03-07 EP EP07711816.4A patent/EP1991411B2/en not_active Not-in-force
- 2007-03-07 AT AT07711816T patent/ATE430653T1/en active
- 2007-03-07 CA CA2644534A patent/CA2644534C/en not_active Expired - Fee Related
- 2007-03-07 PT PT07711816T patent/PT1991411E/en unknown
- 2007-03-07 CN CN200780007912XA patent/CN101394992B/en not_active Expired - Fee Related
- 2007-03-07 RU RU2008139897/12A patent/RU2408463C2/en not_active IP Right Cessation
- 2007-03-07 WO PCT/EP2007/001945 patent/WO2007101668A2/en active Application Filing
- 2007-07-03 UA UAA200907127A patent/UA96968C2/en unknown
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2008
- 2008-09-16 NO NO20083960A patent/NO20083960L/en not_active Application Discontinuation
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US6524683B1 (en) † | 1988-01-13 | 2003-02-25 | Georgia-Pacific France | Sheet of embossed absorbent paper, and a method and device for producing same |
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Also Published As
Publication number | Publication date |
---|---|
JP2009528928A (en) | 2009-08-13 |
FIU20060311U0 (en) | 2006-07-31 |
ES2325606T3 (en) | 2009-09-09 |
PT1991411E (en) | 2009-06-16 |
WO2007101668A3 (en) | 2008-03-13 |
SI1991411T1 (en) | 2009-08-31 |
PL1991411T5 (en) | 2019-06-28 |
EP1991411A2 (en) | 2008-11-19 |
DE102006010709A1 (en) | 2007-09-13 |
ITRM20060167U1 (en) | 2007-09-09 |
PL1991411T3 (en) | 2009-08-31 |
RU2408463C2 (en) | 2011-01-10 |
NO20083960L (en) | 2008-09-16 |
CN101394992A (en) | 2009-03-25 |
CA2644534C (en) | 2012-10-30 |
DK200600197U3 (en) | 2007-06-22 |
ATE430653T1 (en) | 2009-05-15 |
EP1991411B1 (en) | 2009-05-06 |
RU2008139897A (en) | 2010-04-20 |
CA2644534A1 (en) | 2007-09-13 |
JP4942772B2 (en) | 2012-05-30 |
UA96968C2 (en) | 2011-12-26 |
US20090226670A1 (en) | 2009-09-10 |
WO2007101668A2 (en) | 2007-09-13 |
DE502007000705D1 (en) | 2009-06-18 |
US8708020B2 (en) | 2014-04-29 |
CN101394992B (en) | 2011-02-23 |
FI7266U1 (en) | 2006-10-31 |
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