EP1472411B1 - Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung - Google Patents

Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung Download PDF

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Publication number
EP1472411B1
EP1472411B1 EP03712280A EP03712280A EP1472411B1 EP 1472411 B1 EP1472411 B1 EP 1472411B1 EP 03712280 A EP03712280 A EP 03712280A EP 03712280 A EP03712280 A EP 03712280A EP 1472411 B1 EP1472411 B1 EP 1472411B1
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EP
European Patent Office
Prior art keywords
sheet
cells
tissue paper
embossed
cylinder
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.)
Expired - Lifetime
Application number
EP03712280A
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English (en)
French (fr)
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EP1472411A1 (de
Inventor
Pierre Graff
Pierre Laurent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Essity Operations France SAS
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Georgia Pacific France SAS
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Filing date
Publication date
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Priority to EP03712280A priority Critical patent/EP1472411B1/de
Publication of EP1472411A1 publication Critical patent/EP1472411A1/de
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Publication of EP1472411B1 publication Critical patent/EP1472411B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • B31F2201/0741—Roller cooperating with a non-even counter roller
    • B31F2201/0743—Roller cooperating with a non-even counter roller having a matching profile
    • 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
    • B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
    • 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
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • 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.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet

Definitions

  • the invention relates to the field of absorbent papers for sanitary or domestic use. It includes single use products such as napkins, tablecloths, paper towels or toilet paper, made of cellulose wadding.
  • Cellulose wadding is an absorbent paper of grammage preferably between 15 and 35 g / m 2 , which can be manufactured so as to have a certain elongation capacity.
  • a common technique is to apply and paste the still wet sheet on a drying cylinder, and then detach it by means of a doctor blade to create crepe corrugations. It can then be reeled pending processing into a finished product.
  • This technique presented in a summary way is called conventional. It is designated in the domain by (CWP).
  • Another technique is to dry the sheet after dewatering without exerting pressure, in part at least to a sufficient dryness to freeze the fibers within the sheet. If necessary, the drying is completed by applying the sheet to a heated cylinder. Thanks to this first drying, the sheet can be pressed onto the cylinder without destroying its structure. It retains part of its volume. This cylinder also allows its creping. The first drying is carried out without pressure by blowing hot air through the sheet after it has drained.
  • TAD which is designated in the field under the acronym
  • embossing by the known technique of embossing, it can improve or at least change one or the other of its characteristics, such as softness, flexibility, absorption, thickness or appearance .
  • the mode of transformation is then a function of the use for which it is intended.
  • the embossing pattern is most commonly constituted protrusions or bosses in the form of pyramids round section, oval or square, regularly distributed on the surface of the sheet. It is observed that a protuberance on one side of the sheet corresponds to a cavity or cell on the other side.
  • a rigid roll is generally used which has on the surface spikes, obtained by etching or by machining, of suitable shape, size and density.
  • the sheet is applied to the roll and is pressed by means of another roll having a deformable coating, eg rubber. She thus marries the relief. For the same reason, we obtain a deformation more or less important according to the parameters we have chosen, such as the flexibility of the rubber, for its ability to deform and conform to the relief of the etching, and the embossing pressure.
  • the Applicant markets a paper towel product whose protuberances are distributed in concentric circles.
  • the paper towel is composed of two plies of cellulose wadding which have been separately embossed and assembled so that the protuberances are in a position known as "nested".
  • the protuberances of one fold face the other fold and are placed between the protuberances of the latter.
  • the two folds are nested in this way one into the other, and provide pockets of air, improving absorption.
  • the sheet has cavities on both sides visible. By ignoring the state of the surface at the microscopic level, but considering its appearance with the naked eye, the sheet has a relief with two levels.
  • a first level is defined by the bottom of the cells (the bottom of the cells is in a single plane if the embossing pins were all at the same level).
  • the second level corresponds to that of the part of the sheet which is not embossed.
  • the document is still known FR 2,773,564 which shows in particular a sheet of absorbent paper, one of whose faces has an embossing consisting of two types of protuberances of different frustoconical shape and height.
  • the prior art also includes the US Patent 3,867,225 which discloses a process of embossing and association of nested folds, each of the plies having embossing in a regular mesh network.
  • the embossing mode of the sheet is also an important parameter on which one can act for this purpose.
  • the Applicant has set itself the objective of creating an embossing mode that improves the absorption properties of paper made of cellulose wadding.
  • the Applicant has also set itself the goal of creating an embossing mode producing an attractive and attractive visual effect at a time.
  • bridge is the part that lies between two adjacent cells.
  • the bridges have straight edges.
  • the edges of the bridges can be curved without departing from the scope of the invention.
  • the edges are preferably parallel but they can also be slightly inclined relative to each other, as will be explained in more detail below.
  • the width D of the bridge is defined by the distance separating the edges of two adjacent cells. When the edges are not parallel, consider the average distance along the bridge.
  • the width may vary in a plane parallel to the surface of the sheet.
  • the width of the bridge may also vary in a plane perpendicular to the surface of the sheet, between the surface of the sheet at the top of the cell and the bottom of the cell. The greatest width is determined both in the plane parallel to the surface of the sheet and in the plane perpendicular to the surface of the sheet.
  • This width can be very small when the bridges are not planar but are curved transversely, which is the most common.
  • the structure according to the invention is new compared to that which can be found in the state of the art. Surprisingly, it is found that the bridges stand out visually and create a pattern distinct from the pattern from the cells, while in the patterns of the prior art, the apparent pattern was exclusively that of the cells themselves.
  • the embossed pattern of the invention evokes a textile product with an embroidered ornament. Indeed, the bridge with its straight edges, evokes the gathering of several fibers or son of a woven product or simply textile.
  • the sheet of the invention has at least three distinct levels of relief which highlight the pattern defined by the cell alignments.
  • a first level corresponds to the bottom of the cells, a second level corresponds to the non-embossed zone and a third level to the surface of the bridges.
  • the sheet of cellulose wadding is such that the L / D ratio is greater than 1, preferably greater than 1.5, and especially greater than 3.
  • the sheet may further be characterized in that the distance between two adjacent first zones (A 1 , A 2 ) separated by a non-embossed zone (B) is between one and three times, preferably between one and two times the width of said first zones (A 1 , A 2 ).
  • embossed paper whose pattern includes square cells is already known.
  • the patent US 4,293,990 discloses an embossed paper sheet for wiping. Embossing is composed of flat portions separated by valleys. The distance (width and length) between the cells is always the same in this case. Bridges do not exist.
  • the blanks of the valleys are rectilinear, there is not in this part pattern corresponding to the second zones of the invention, therefore a fortiori three zones at different levels.
  • the section of the cells can be triangular with the advantage of being able to arrange them in alignments forming portions of curves without losing the property of the bridges.
  • the slope ( ⁇ ) of at least one of the walls of the cells measured relative to the vertical to the plane of the sheet is between 20 ° and 45 °.
  • the linear density of the cells is between 2 and 20 per cm; their surface density is between 4 and 50 per cm 2 , preferably between 4 and 20 per cm 2 .
  • the sheet according to the invention may be associated with a second sheet of cellulose wadding to form a double-thickness sheet.
  • the second sheet may be a sheet of cellulose wadding, of the throughdried drying type.
  • the alignments are concentric.
  • the embossing roll of a sheet comprises polygonal base-shaped pegs forming alignments in which two adjacent pegs are arranged so that two respective sides of the polygonal base of said two pegs are disposed opposite one of the other and are substantially parallel to each other.
  • the pins are triangular based.
  • the cylinder according to the invention is characterized in particular by the fact that the angle ( ⁇ ) defined by said two sides of the substantially parallel pins is between 0 and 35 °.
  • each of the faces of the pins forms an angle ( ⁇ ) of between 20 and 45 ° with a plane perpendicular to a generatrix of the cylinder defined at the level of said face.
  • the invention also relates to the process for obtaining in particular the product defined above. Surprisingly, it is found that it is possible to produce a pattern comprising cell alignments forming such a three-level relief, by embossing the cellulose wadding on a cylinder engraved with a single level of etching depth. This avoids the complex and expensive engraving of the cylinders.
  • the figure 1 gives a schematic representation of an element of an industrial unit for embossing folds of cellulose wadding and transforming them into a sheet of product for sanitary or domestic use.
  • This element comprises a embossing cylinder 1, usually of metal, with a surface engraved according to the desired embossing pattern, and a cylinder 2 with a rubber coating or any other material liable to deform.
  • the two cylinders have parallel axes of rotation and roll one over the other.
  • the sheet 3 of cellulose wadding is guided between the two rolls at the same time as driving means rotate the two rolls in opposite directions with respect to each other, and pushing means bring the two rolls closer together. from one another under a determined effort.
  • the rubber comes to marry the relief of the etching of the first cylinder 1.
  • the sheet 3 placed between the two cylinders undergoes the same deformation.
  • the etching consists of pins 10, which can be seen on a scale enlarged with respect to the diameter of the cylinder, distributed according to the chosen pattern.
  • the width of the contact zone between the two cylinders, which forms a rectangular band, is designated by the term imprint and is expressed in centimeters.
  • FIG 2 On the figure 2 a top view of a portion of the pattern engraved on the cylinder 1 and in accordance with one embodiment of the invention is shown.
  • This pattern may preferentially consist of triangular-based pins 10.
  • the pins are placed in alignments A ' 1 , A' 2 which in this example are essentially circular arcs and constitute on the sheet of the first embossed areas A 1 , A 2 . Between two alignments A ' 1 , A' 2 , there is a second zone B 'which has no pins 10.
  • the pins have, preferably, a pyramidal shape with a triangular base as seen more precisely on the figure 3 .
  • Their summit is not in peak and is truncated. It forms a flat surface.
  • the height (H) of the spikes is measured from their top to the bottom of the engraving and varies from 0.1 to 2.5 mm approximately. It depends on the intended application.
  • a lower height is chosen for products that aim for a soft touch such as toilet paper or napkins.
  • a higher height H is chosen for a product whose absorption capacity of the cellulose wadding is best exploited.
  • the faces of the adjacent pyramid-shaped pins may have different or identical slopes.
  • Their base is polygonal or substantially polygonal and two adjacent pins are arranged so that their bases have two straight sides parallel or substantially parallel as defined below.
  • the angle ( ⁇ ) (as visible on the figure 3 ) slopes of the pins are preferably between 20 ° and 45 °, measured relative to the vertical of the base of the pin and on the cylinder is perpendicular to the axis of the latter.
  • pin 10 of the figure 3 for example has sharp edges, it is also within the scope of the invention to provide pyramidal pins whose edges are rounded. Other forms of polygonal-based pins can be considered as trapezes, rhombuses ...
  • the pins on the same alignment are arranged such that the sums 101, 102 of any two adjacent pins may be slightly offset from the general direction of the alignment, as illustrated in particular on the figure 2 at the alignment areas A ' 1 or A' 2 .
  • the space between two pins is defined by the sides 101m and 102m of their triangular base.
  • the two adjacent sides 101m, 102m of two pins between them form an angle ( ⁇ ) which in accordance with a feature of the invention is between 0 ° and 35 °: cf. Figure 2A .
  • a first and a third pin of the alignment are oriented towards the center of the circle defined by the alignment whereas the second pin disposed between the first and the third is oriented towards the outside of the circle defined by alignment and is interposed between the first and second pins.
  • the angle ( ⁇ ) formed by the two sides is preferably less than 35 ° so that it can form a bridge on the embossed product.
  • the distance between two successive pins is quite small. It is such that, on the embossed product, the length L of the bridge portion is in a ratio with its width D greater than 1; but the result is more marked with a higher ratio, 1.5 for example, 2 or 3 in particular.
  • width D it is necessary to understand the distance between two sides of two adjacent cells. This width can be taken at any level between the base and the top of the cell; the width D thus varies according to the angle ( ⁇ ).
  • the length L of a bridge substantially corresponds to the length of two adjacent sides 101m, 102m of two adjacent pins 10.
  • the embodiment of the patterns of the invention is of particular interest when the plies are arranged in nested mode and the first areas separated from each other by substantially unaffected second zones.
  • the widths are preferably equal in this arrangement because there is then a clear difference in level between the first and second zones.
  • two or more alignments may be adjacent, i.e., close to one another, to form an embossed area which itself is surrounded by non-embossed areas. . Bridges are thus created, between the cells, different alignments, which allow communication from a non-embossed zone to another non-embossed zone disposed on the other side of the embossed zone.
  • the figure 7 illustrates an exemplary embodiment of this type. Indeed, one can see in this figure an engraved cylinder portion on which appear in particular corrugated alignments A ' 3 of pins. With this type of cylinder, it is possible to produce sheets comprising alignments cells such as two interconnected bridges determine a path between two non-embossed areas.
  • Alignment alignments include a set of at least two adjacent cells that delimit at least one bridge.
  • the alignments may consist of sets of cells with a polygonal base, juxtaposed with other types of cells corresponding for example to conventional protuberances having a circular base. This variant is not illustrated.
  • FIG 4 there is shown a partial view, in perspective, of a product obtained by embossing on a cylinder having the pattern of the figure 2 .
  • each bridge P has a length L and a width D. Additional patterns thus created give a new effect to the product.
  • the pattern may be as schematized on the figure 8 corresponding to the surface of a cylinder, that is to say with not only alignments A ' 4 of polygonal base pins defining first circles, but also with other alignments A "formed of conventional circular section pins which define concentric circles at the first circles, other elements of pattern C 'formed by a polygonal-based (here triangular) pin alignment can also be envisaged, in view of the relative arrangement of the pins forming the latter alignment, the adjacent sides two spikes form here an angle ⁇ (as illustrated on the Figure 2A ).
  • the bridge thus formed does not have a constant width.
  • the width the non-embossed area may be the same or less than the width of the cell alignments.
  • a first sheet may be embossed in a pattern of polygonal shaped cell alignment. This first sheet may be associated with a second embossed sheet following the same type of pattern so that the two sheets are assembled in a known position under the name of "nested".
  • a first sheet may be embossed according to the principle of the variants represented in FIGS. figures 4 (sheet), 7 or 8 (cylinder).
  • This first sheet may be associated with a second embossed sheet or according to a pattern of the state of the art, that is to say without bridges, for example of the type illustrated by the figure 5 or in a pattern combining bridge alignments and bridges-free alignments, as illustrated for example by figure 8 .
  • This effect is very advantageous especially for the use of the sheet as a paper towel.
  • the images obtained make it possible to measure the evolution of the diameter of the drop over time.
  • the time taken by a droplet on the slide is measured to pass inside the paper substrate, and the operation is repeated as many times as is necessary to obtain a statistically representative sample of results. These measurements were made on samples of the same papers as in the previous examples in two different places.
  • the absorption time was first measured by the paper at points PI 1 ( figure 4 ) and PA 1 ( figure 5 ) in the central area of the patterns, then at points PI 2 ( figure 4 ) and PA 2 ( figure 5 ) that is to say in the non-embossed zone (but corresponding to an embossed zone of the second fold).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Sanitary Thin Papers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Laminated Bodies (AREA)
  • Biological Treatment Of Waste Water (AREA)

Claims (15)

  1. Zellstoffwatteblatt, das mindestens einen ersten geprägten Bereich (A1, A2) mit Noppen auf einer Seite, welche Waben (101', 102') auf der anderen Seite entsprechen, wobei die Waben eine Grundfläche von im Wesentlichen vieleckiger Form aufweisen, und mindestens einen zweiten, nicht geprägten Bereich (B) aufweist, dadurch gekennzeichnet, dass:
    - die Waben (101', 102') in mindestens einer Ausrichtung angeordnet sind;
    - die gegenüberliegenden Seiten von zwei benachbarten Waben einen Steg (P) mit geradlinigen oder im Wesentlichen geradlinigen Rändern mit einer Länge L, die größer als sein größter Durchmesser D ist, definieren, wobei ein oder mehrere miteinander verbundene Stege einen Weg zwischen vorzugsweise zwei zweiten, nicht geprägten Bereichen (B) bestimmen, die durch mindestens einen ersten geprägten Bereich (A1, A2) getrennt sind.
  2. Zellstoffwatteblatt nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass L/D größer als 1, vorzugsweise größer als 1,5 und insbesondere größer als 3 ist.
  3. Blatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand zwischen zwei benachbarten ersten Bereichen (A1, A2), die durch einen nicht geprägten Bereich (B) getrennt sind, zwischen dem Ein- und Dreifachen, verzugsweise zwischen dem Ein- und Zweifachen, der Breite der ersten Bereiche (A1, A2) liegt.
  4. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Grundfläche der Waben (101', 102') dreieckig ist.
  5. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Neigung (α) mindestens einer der Wände der Waben, bezüglich der Senkrechten zur Ebene des Blattes gemessen, zwischen 20° und 45° beträgt.
  6. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Flächendichte der Waben zwischen 4 und 50 pro cm2 und vorzugsweise zwischen 4 und 20 pro cm2 beträgt.
  7. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die lineare Dichte der Waben zwischen 2 und 20 pro cm beträgt.
  8. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es mit einem zweiten 2ellstoffwatteblatt verbunden ist, um ein Blatt von doppelter Dicke zu bilden.
  9. Zellstoffwatteblatt nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das zweite Blatt ein Zellstoffwatteblatt von dem im Durchströmverfahren getrockneten Typ ist.
  10. Zellstoffwatteblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ausrichtungen konzentrisch sind.
  11. Walze zum Prägen eines Blattes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie Spitzen (10) mit einer vieleckigen Grundfläche aufweist, welche Ausrichtungen (A'1, A'2) bilden, in denen zwei benachbarte Spitzen (101, 102) derart angeordnet sind, dass zwei jeweilige Seiten (101m, 102m) der vieleckigen Grundfläche der zwei Spitzen einander gegenüber angeordnet sind und im Wesentlichen parallel zueinander sind.
  12. Walze nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Spitzen (10) eine dreieckige Grundfläche aufweisen.
  13. Walze nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, dass der Winkel (β) zwischen den beiden im Wesentlichen parallelen Seiten (101m, 102m) der Spitzen (101, 102) zwischen 0 und 35° beträgt.
  14. Walze nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass jede der Flächen der Spitzen einen Winkel (α), der zwischen 20 und 45° beträgt, mit einer Ebene bildet, die zu einer an der Fläche definierten Erzeugenden der Walze senkrecht ist.
  15. Verfahren zum Herstellen eines Blattes nach einem der Ansprüche 1 bis 10, gemäß dem das Blatt auf eine gravierte Prägewalze (1) gepresst wird, dadurch gekennzeichnet, dass die Walze (1) nach einem der Ansprüche 11 bis 14 definiert ist.
EP03712280A 2002-01-25 2003-01-24 Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung Expired - Lifetime EP1472411B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03712280A EP1472411B1 (de) 2002-01-25 2003-01-24 Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02290181A EP1331308A1 (de) 2002-01-25 2002-01-25 Gekrepptes Blatt eines saugfähigen Papiers, Prägewalze wie auch entsprechendes Verfahren
EP02290181 2002-01-25
EP03712280A EP1472411B1 (de) 2002-01-25 2003-01-24 Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung
PCT/FR2003/000229 WO2003062530A1 (fr) 2002-01-25 2003-01-24 Feuille de papier absorbant gaufre, cylindre pour le gaufrage et son procede de mise en oeuvre

Publications (2)

Publication Number Publication Date
EP1472411A1 EP1472411A1 (de) 2004-11-03
EP1472411B1 true EP1472411B1 (de) 2012-03-21

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EP02290181A Withdrawn EP1331308A1 (de) 2002-01-25 2002-01-25 Gekrepptes Blatt eines saugfähigen Papiers, Prägewalze wie auch entsprechendes Verfahren
EP03712280A Expired - Lifetime EP1472411B1 (de) 2002-01-25 2003-01-24 Saugfähiger geprägter papierbogen, prägezylinder sowie verfahren zu dessen herstellung

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EP02290181A Withdrawn EP1331308A1 (de) 2002-01-25 2002-01-25 Gekrepptes Blatt eines saugfähigen Papiers, Prägewalze wie auch entsprechendes Verfahren

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Country Link
US (1) US7540939B2 (de)
EP (2) EP1331308A1 (de)
AT (1) ATE550490T1 (de)
CA (1) CA2472318C (de)
EA (1) EA006173B1 (de)
ES (1) ES2384238T3 (de)
MX (1) MXPA04007051A (de)
NO (1) NO333889B1 (de)
WO (1) WO2003062530A1 (de)

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Also Published As

Publication number Publication date
ES2384238T3 (es) 2012-07-02
CA2472318C (fr) 2011-03-15
ATE550490T1 (de) 2012-04-15
EA200400863A1 (ru) 2005-02-24
MXPA04007051A (es) 2005-06-17
EP1331308A1 (de) 2003-07-30
NO333889B1 (no) 2013-10-14
NO20034234D0 (no) 2003-09-23
CA2472318A1 (fr) 2003-07-31
EP1472411A1 (de) 2004-11-03
WO2003062530A1 (fr) 2003-07-31
NO20034234L (no) 2003-11-25
EA006173B1 (ru) 2005-10-27
US7540939B2 (en) 2009-06-02
US20050067089A1 (en) 2005-03-31

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