EP1790466B1 - Cylindre de gaufrage et procédé pour gaufrer une bande ou une feuille - Google Patents

Cylindre de gaufrage et procédé pour gaufrer une bande ou une feuille Download PDF

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Publication number
EP1790466B1
EP1790466B1 EP06023985A EP06023985A EP1790466B1 EP 1790466 B1 EP1790466 B1 EP 1790466B1 EP 06023985 A EP06023985 A EP 06023985A EP 06023985 A EP06023985 A EP 06023985A EP 1790466 B1 EP1790466 B1 EP 1790466B1
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EP
European Patent Office
Prior art keywords
embossing
efb
engagement area
web
pins
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
Application number
EP06023985A
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German (de)
English (en)
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EP1790466A1 (fr
Inventor
Reiner Seger
Frank Dr. Lindenlauf
Martin Dennert
Achim Rech
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.)
Winkler and Duennebier GmbH
Original Assignee
Winkler and Duennebier GmbH
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Publication of EP1790466A1 publication Critical patent/EP1790466A1/fr
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Classifications

    • 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
    • B31F2201/0725—Hardness
    • 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
    • B31F2201/073—Rollers having a multilayered structure

Definitions

  • the present invention relates to an embossing roller and a method for producing an embossing pattern in a material web or in a blank.
  • the invention is particularly applicable in the context of multi-ply tissue napkins or tissue handkerchiefs consisting of several plies of tissue paper, the tissue plies being held together by embossing.
  • the embossing station comprises a pair of rollers, which on the one hand has an embossing roller and on the other a counter-roller. Between the two rollers is a passage or embossing gap, through which the material web is guided.
  • the embossing roll has a plurality of embossing pins projecting radially from its lateral surface, while the counter-roller is provided with a smooth lateral surface.
  • paper handkerchiefs are often produced to achieve high productivity by means of multi-web manufacturing machines having multiple juxtaposed rows of benefits.
  • they have for holding the tissue layers typically arranged at its edge Edge embossing and a substantially unembossed mirror surface surrounded by the edge embossing.
  • an embossing roll for producing an embossing pattern which, in addition to the embossing elevations for producing the embossing pattern, comprises stress compensating elevations in the form of stress compensating tapes.
  • the load balancing surveys, in conjunction with the embossing surveys, should ensure that roll vibrations are avoided while at the same time not restricting design freedom in designing the embossing pattern. It is proposed to use the known embossing roll in the single-lane production of tissue paper towels.
  • the roll construction does not have to be increased.
  • the engagement surface ie the sum of those end faces of embossing pins, which are at the same time more or less in engagement with the material web to be embossed, substantially constant.
  • a transversely over all benefit rows extending engagement surface band mentally defined by the plane of the embossing roll unwound in the plane and being as long as the sum of the widths of all the benefit rows.
  • the width of the engagement surface band is determined at least as a function of the diameter of the embossing roller, preferably additionally in dependence on the height or the radial projection of the embossing pins over the lateral surface and / or the thickness of the material web or the blank and / or or the width of the Recgespaltes.
  • the presettable width of the engagement surface band should approximately reflect the actual engagement conditions between the embossing pins and the material web. It is therefore based on the order of magnitude of the distance over which the material web or the blank is pressed or compressed during embossing.
  • the width of the engagement surface band is smaller than the aforementioned distance.
  • a substantially constant engagement surface in the sense of the present invention means that an intervention parameter to be calculated may not exceed a certain maximum value. An example of the calculation of this intervention parameter will be described later.
  • the fact that the aforementioned engagement surface remains essentially constant in this sense hardly occur between embossing roller and counter-roller embossing force fluctuations, which lead to the unwanted chatter vibrations in the prior art.
  • the stamping forces occurring between the two rolls are essentially constant according to the invention, so that chatter vibrations are no longer excited.
  • a substantially constant engagement surface can be achieved, for example, by a specific arrangement of embossing pins of the same size on the lateral surface of the embossing roller. Additionally or alternatively, it is conceivable to form the embossing pins with different sized end faces for engagement in the material web and thereby to keep the engagement surface constant.
  • Fig. 1 shows an embossing roller 1 rotating clockwise and a counter-rotating counter-roller 4.
  • the embossing roller 1 has on its lateral surface 2 only partially illustrated embossing pins 3 for introducing embossing recesses in a material web 6, the in Fig. 1 is passed from right to left through the gap between the rollers 1 and 4.
  • the mantle surface 5 of the counter-roller 4 is smooth, ie it has no embossing projections.
  • Fig. 2 shows the partial development of the lateral surface 2 of a known from the prior art embossing roller in the plane.
  • a total of four utility rows N 1 , N 2 , N 3 , N 4 lying side by side in roll axial direction z with the respective widths b N1 , b N2 , b N3 , b N4 can be seen, which fill the entire width of the material web 6.
  • the embossing pattern is embossed on the material web 6.
  • the embossing patterns in each row of use N 1 , N 2 , N 3 , N 4 are in the circumferential direction of the embossing roll 1 or rotational angle direction ⁇ offset from one another.
  • Embossing patterns used in tissue paper generally have a rectangular shape.
  • embossing patterns shown are in each case square or rectangular.
  • the embossing pattern is in the form of an edge embossing at its edge.
  • the edge embossment completely surrounds or encloses a continuous, unembossed mirror surface S, which is located in the inner field of the edge embossing, as in FIG Fig. 2 can be seen.
  • the mirror surface S is preferably greater than or equal to a quarter of the entire product surface, ie the total area of the paper tissue comprising the mirror surface S and the surface of the edge embossing.
  • a narrow, unembossed strip between the edge embossing and the product or tissue border may constitute another component of the total area of the tissue.
  • Any logo or similar impressions in the mirror surface S are also taken into account in this context, so that the associated stamping surfaces, which are comparatively small in relation to the edge embossing, are not attributed to the mirror surface S itself.
  • the edge embossing the mirror surface S not completely closed circumferentially, but only partially surrounds.
  • Substantially constant in the sense of the following invention is preferably intended to mean that in the case of two-lane production machines with two use rows N 1 , N 2 the inequality M e ⁇ 30 % and in four-lane manufacturing machines with four utility rows N 1 , N 2 , N 3 , N 4 the inequality M e ⁇ 20 % applies.
  • the calculation of the engagement surface parameter M e takes place with the aid of electronic data processing.
  • FIGS. 3 and 4 are embossing patterns of the prior art as well as according to the present invention compared.
  • Fig. 3 shows the part of a conventional embossing pattern, as it is multiply in Fig. 2 is shown.
  • the embossing pin diameter for the production of the embossing pattern according to Fig. 3 was 0.4 mm.
  • Fig. 4 shows the part of an embossing pattern, which takes into account the condition according to the invention of a substantially constant engagement surface. As can be seen, the corner of the per se square embossing pattern in the transition region E is rounded.
  • the embossing pin diameters for producing the embossing recesses in the region E were 0.5 mm, while the embossing pin diameters for producing the embossing recesses outside the region E were 0.4 mm as in the embossing pattern according to FIG Fig. 3 cheat.
  • Fig. 5 shows a comparison of the size of the engaging surfaces in the production of the embossing pattern according to Fig. 3 and the embossing pattern according to Fig. 4 as a function of the angle of rotation ⁇ .
  • N 4 is also shown engaging surface 4 summed over all the rows of blanks N 1, N 2, N 3, N.
  • the totalized engagement surface oscillates between the values of about 80 mm 2 and about 190 mm 2 .
  • the size of the engagement surface only oscillates between approximately 80 mm 2 and approximately 90 mm 2 , like the right half of the diagram Fig. 5 can be seen.
  • the engagement surface parameter M e remains far below 20%.
  • chatter vibrations can additionally be counteracted by reducing the accumulated engagement surface as much as possible.
  • Fig. 8 shows the detail "X" Fig. 1 to explain the determination according to the invention of the width .DELTA.l of the engagement surface band EFB 1 and EFB. 2
  • width .DELTA.l of the engagement surface band which in particular can also be determined empirically, are conceivable.
  • the width ⁇ l should, however, always be smaller than that in Fig. 8 drawn distance .DELTA.M, over which the material web 6 is pressed during the embossing process deviating from its original thickness t.
  • the width .DELTA.l the above inequalities regarding the engagement surface parameters M e apply.
  • the embossing quality of an embossing pattern produced according to the invention is determined on the one hand by the formation of the embossing depressions per se (penetration depth of the pins into the material web) and on the other by the uniformity of the arrangement of the embossing depressions relative to one another.
  • the embossing quality can be assessed on the basis of gray levels of the embossing pattern.
  • the intensity of the grayscale of the individual embossing depressions provides a measure of the quality, i. H. for the embossing depth and the geometry of the embossing point, dar.
  • the course of the gray scale or embossing intensity can be represented as a function of the angle of rotation.
  • the course of the corresponding gray scale or embossing intensity of the ideal reference embossing pattern is shown.
  • the ideal intensity average is 9.4%
  • the mean intensity value for the conventional embossed pattern is 2.8%.
  • the modulation representing a mean deflection amount is 1.2% for the reference emboss pattern, and is 86.0% for the conventional embossed pattern.
  • the gray scale intensity in a selected area is shown in the diagram according to FIG Fig. 7 applied in the form of the lower curve.
  • the upper curve corresponds - as in Fig. 6 - again the ideal reference embossing pattern.
  • the selected region is characterized in that it is an area in which a constant course of the embossing is expected, ie in which the diameters and the arrangement of the embossing points do not change as a function of the development angle ⁇ .
  • the mean value of the embossing intensity of the embossing pattern produced according to the invention is 2.2%, while that of the reference embossing pattern is 5.5%.
  • the modulation of the embossed pattern produced according to the invention is 27.4%, while that of the reference embossing pattern is 0.8%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (11)

  1. Rouleau d'estampage destiné à la production d'un modèle d'estampage par estampage d'une bande de matière (6) ou d'une découpe dans une fente d'estampage, ce modèle se trouvant pour finir sur un produit final et le produit final étant reproduit de multiples fois dans plusieurs rangées de poses juxtaposées (N1, N2, N3, N4) à l'aide d'une machine de fabrication qui est traversée par la bande de matière (6) ou par la découpe dans un sens de machine (R), et le modèle d'estampage présentant un estampage marginal disposé au bord du produit final ainsi qu'une surface réfléchissante (S) essentiellement non estampée et entourée du moins partiellement de l'estampage marginal, le rouleau d'estampage (1) englobant une surface enveloppante (2) avec plusieurs pointes d'estampage (3) permettant de produire le modèle d'estampage, qui présentent chacune une face avant opposée à la surface enveloppante (2) pour l'engagement dans la bande de matière (6) ou dans la découpe et qui sont agencées sur la surface enveloppante (2) en fonction du modèle d'estampage, la somme des surfaces des faces avant, qui se trouvent engagées dans une bande de surface d'engagement (EFB1, EFB2) imaginaire et placée au-dessus de la projection de la surface enveloppante (2), formant une surface d'engagement,
    caractérisé par le fait que
    les pointes d'estampage (3) sont agencées sur la surface enveloppante (2) et/ou les surfaces de leurs faces avant mesurées de telle manière que la surface d'engagement est pratiquement constante pendant une rotation complète du rouleau d'estampage (1), la bande de surface d'engagement (EFB1, EFB2) présentant une forme rectangulaire avec une largeur prescrite (Δl) et une longueur (LB) qui correspond à la somme des largeurs (bN1, bN2, bN3, bN4) mesurées dans le sens transversal à la machine (R) de toutes les rangées de poses (N1, N2, N3, N4).
  2. Rouleau d'estampage d'après la revendication 1,
    caractérisé par le fait que
    la largeur (Δl) de la bande de surface d'engagement (EFB1, EFB2) s'élève à 2 ⋅ R - h 2 - R - h - 1 2 ⁢ t - h - s 2
    Figure imgb0040
    avec
    R = rayon du rouleau d'estampage (1) se référant à la surface avant des pointes d'estampage (3) ;
    h = porte-à-faux radial des pointes d'estampage (3) au-dessus de la surface enveloppante (2) ;
    t = épaisseur de la bande de matière (6) ou de la découpe et
    s = largeur de la fente d'estampage.
  3. Rouleau d'estampage d'après la revendication 1,
    caractérisé par le fait que
    la largeur (Δl) de la bande de surface d'engagement (EFB1, EFB2) s'élève à 2 ⋅ R 2 - R - 1 2 ⁢ t + h - s 2
    Figure imgb0041
    avec
    R = rayon du rouleau d'estampage (1) se référant à la surface avant des pointes d'estampage (3) ;
    h = porte-à-faux radial des pointes d'estampage (3) au-dessus de la surface enveloppante (2) ;
    t = épaisseur de la bande de matière (6) ou de la découpe et
    s = largeur de la fente d'estampage.
  4. Rouleau d'estampage d'après l'une des revendications ci-dessus,
    caractérisé par le fait que
    il est conçu pour une machine de fabrication à deux voies avec deux rangées de poses (N1, N2) et que la surface d'engagement pratiquement constante signifie que, pour un paramètre de surface d'engagement Me avec M e = A e max - A e min A e max + A e min ⋅ 100 % ;
    Figure imgb0042
    avec
    Ae max = surface d'engagement maximale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) et
    Ae min = surface d'engagement minimale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) ;
    on obtient M e ≤ 30 % .
    Figure imgb0043
  5. Rouleau d'estampage d'après l'une des revendications 1 à 3,
    caractérisé par le fait que
    il est conçu pour une machine de fabrication à quatre voies avec quatre rangées de poses (N1, N2, N3, N4) et que la surface d'engagement pratiquement constante signifie que, pour un paramètre de surface d'engagement Me avec M e = A e max - A e min A e max + A e min ⋅ 100 % ;
    Figure imgb0044
    avec
    Ae max= surface d'engagement maximale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) et
    Ae min = surface d'engagement minimale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) ;
    on obtient M e ≤ 20 % .
    Figure imgb0045
  6. Procédé destiné à la production d'un modèle d'estampage par estampage d'une bande de matière (6) ou d'une découpe dans une fente d'estampage, ce modèle se trouvant pour finir sur un produit final et le produit final étant reproduit de multiples fois dans plusieurs rangées de poses juxtaposées (N1, N2, N3, N4) à l'aide d'une machine de fabrication qui est traversée par la bande de matière (6) ou par la découpe dans un sens de machine (R), et le modèle d'estampage étant produit sous la forme d'un estampage marginal disposé au bord du produit final ainsi que d'une surface réfléchissante (S) essentiellement non estampée et entourée du moins partiellement de l'estampage marginal, un rouleau d'estampage (1) étant utilisé avec une surface enveloppante (2) avec plusieurs pointes d'estampage (3) permettant de produire le modèle d'estampage, qui présentent chacune une face avant opposée à la surface enveloppante (2) pour l'engagement dans la bande de matière (6) ou dans la découpe et qui sont agencées sur la surface enveloppante (2) en fonction du modèle d'estampage, la somme des surfaces des faces avant, qui se trouvent engagées dans une bande de surface d'engagement (EFB1, EFB2) imaginaire et placée au-dessus de la projection de la surface enveloppante (2), formant une surface d'engagement,
    caractérisé par le fait que
    l'engagement, au moyen de pointes d'estampage dans la bande de matière ou dans la découpe, destiné à la réalisation d'empreintes d'estampage représentant le modèle d'estampage, est tel que la surface d'engagement est pratiquement constante pendant une rotation complète du rouleau d'estampage (1), la bande de surface d'engagement (EFB1, EFB2) présentant une forme rectangulaire avec une largeur prescrite Δl et une longueur LB qui correspond à la somme des largeurs (bN1, bN2, bN3, bN4) mesurées dans le sens transversal à la machine (R) de toutes les rangées de poses (N1, N2, N3, N4).
  7. Procédé d'après la revendication 6,
    caractérisé par le fait que
    la largeur (Δl) de la bande de surface d'engagement (EFB1, EFB2) est sélectionnée selon 2 ⋅ R - h 2 - R - h - 1 2 ⁢ t - h - s 2
    Figure imgb0046
    avec
    R = rayon du rouleau d'estampage (1) se référant à la surface avant des pointes d'estampage (3) ;
    h = porte-à-faux radial des pointes d'estampage (3) au-dessus de la surface enveloppante (2) ;
    t = épaisseur de la bande de matière (6) ou de la découpe et
    s = largeur de la fente d'estampage.
  8. Procédé d'après la revendication 6,
    caractérisé par le fait que
    la largeur (Δl) de la bande de surface d'engagement (EFB1, EFB2) est sélectionnée selon 2 ⋅ R 2 - R - 1 2 ⁢ t + h - s 2
    Figure imgb0047
    avec
    R = rayon du rouleau d'estampage (1) se référant à la surface avant des pointes d'estampage (3) ;
    h = porte-à-faux radial des pointes d'estampage (3) au-dessus de la surface enveloppante (2) ;
    t = épaisseur de la bande de matière (6) ou de la découpe et
    s = largeur de la fente d'estampage.
  9. Procédé d'après l'une des revendications 6 à 8,
    caractérisé par le fait que
    la bande de matière (6) ou la découpe sont estampées dans une machine de fabrication à deux voies avec deux rangées de poses (N1, N2) et que la surface d'engagement pratiquement constante signifie que, pour un paramètre de surface d'engagement Me avec M e = A e max - A e min A e max + A e min ⋅ 100 % ;
    Figure imgb0048
    avec
    Ae max = surface d'engagement maximale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) et
    Ae min= surface d'engagement minimale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) ;
    on obtient M e ≤ 30 % .
    Figure imgb0049
  10. Procédé d'après l'une des revendications 6 à 8,
    caractérisé par le fait que
    la bande de matière (6) ou la découpe sont estampées dans une machine de fabrication à quatre voies avec quatre rangées de poses (N1, N2, N3, N4) et que la surface d'engagement pratiquement constante signifie que, pour un paramètre de surface d'engagement Me avec M e = A e max - A e min A e max + A e min ⋅ 100 % ;
    Figure imgb0050
    avec
    Ae max = surface d'engagement maximale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) et
    Ae min = surface d'engagement minimale dans la bande de surface d'engagement (EFB1, EFB2) pendant une rotation complète du rouleau d'estampage (1) ;
    on obtient M e ≤ 20 % .
    Figure imgb0051
  11. Mouchoir en papier
    caractérisé par le fait que
    il est doté d'un modèle d'estampage qui a été produit selon le procédé décrit d'après l'une des revendications 6 à 10.
EP06023985A 2005-11-23 2006-11-18 Cylindre de gaufrage et procédé pour gaufrer une bande ou une feuille Not-in-force EP1790466B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005056109A DE102005056109A1 (de) 2005-11-23 2005-11-23 Prägewalze und Verfahren zum Erzeugen eines Prägemusters in einer Materialbahn oder in einem Zuschnitt

Publications (2)

Publication Number Publication Date
EP1790466A1 EP1790466A1 (fr) 2007-05-30
EP1790466B1 true EP1790466B1 (fr) 2009-09-16

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EP (1) EP1790466B1 (fr)
AT (1) ATE442953T1 (fr)
DE (2) DE102005056109A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN113681991B (zh) * 2021-08-04 2023-05-09 广东财州科技有限公司 多功能中间压花外层四边锁花纸巾的制作方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2175241C (fr) * 1993-10-28 1999-12-21 Karl Kristian Kobs Kroyer (Deceased) Appareil et procede de production d'une bande fibreuse gaufree double face et bande double face ainsi produite
US5543202A (en) * 1994-03-14 1996-08-06 Kimberly-Clark Corporation Process for producing a crimp-bonded fibrous cellulosic laminate
US6251207B1 (en) * 1998-12-31 2001-06-26 Kimberly-Clark Worldwide, Inc. Embossing and laminating irregular bonding patterns
DK1151852T3 (da) * 2000-04-28 2005-03-21 Georgia Pacific France Anordning og fremgangsmåde til klemning af papir eller nonwoven, og fremstillet produkt
DE20313976U1 (de) * 2003-09-09 2003-12-11 Saueressig Gmbh + Co. Walzenanordnung für das Prägen von bahnförmigen Materialien
ITMI20032279A1 (it) * 2003-11-24 2005-05-25 Ind Cartarie Tronchetti Spa Apparecchiatura per la fabbricazione di prodotti in carta a piu'veli mediante godronatura

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EP1790466A1 (fr) 2007-05-30
ATE442953T1 (de) 2009-10-15
DE502006004849D1 (de) 2009-10-29

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