EP3838579A1 - Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur - Google Patents

Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur Download PDF

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Publication number
EP3838579A1
EP3838579A1 EP19217210.4A EP19217210A EP3838579A1 EP 3838579 A1 EP3838579 A1 EP 3838579A1 EP 19217210 A EP19217210 A EP 19217210A EP 3838579 A1 EP3838579 A1 EP 3838579A1
Authority
EP
European Patent Office
Prior art keywords
projection
embossing
recess
embossing roller
roller arrangement
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.)
Granted
Application number
EP19217210.4A
Other languages
German (de)
English (en)
Other versions
EP3838579B1 (fr
Inventor
Artur Koslowski
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.)
Matthews International Corp
Original Assignee
Matthews International GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matthews International GmbH filed Critical Matthews International GmbH
Priority to ES19217210T priority Critical patent/ES2949012T3/es
Priority to PT192172104T priority patent/PT3838579T/pt
Priority to EP19217210.4A priority patent/EP3838579B1/fr
Publication of EP3838579A1 publication Critical patent/EP3838579A1/fr
Application granted granted Critical
Publication of EP3838579B1 publication Critical patent/EP3838579B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B31F2201/0717—Methods and means for forming the embossments
    • B31F2201/072—Laser engraving
    • 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
    • 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
    • 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
    • B31F2201/0789—Joining plies without adhesive

Definitions

  • the invention relates to an embossing roller arrangement for producing at least two-ply tissues, such as in particular handkerchiefs and / or serviettes and / or kitchen rolls and / or toilet paper, with a pair of rollers rolling on top of one another, the pair of rollers comprising an embossing roller and an opposing roller, and with at least one on the pair of rollers formed embossing arrangement, wherein the embossing arrangement comprises at least one recess on the counter roller and at least one projection engaging in the recess on the embossing roller.
  • top-to-flat rollers With top-to-flat rollers, a positively engraved embossing roller is pressed against a smooth counter roller with high pressure. The pressure of the flat engraving head against the smooth counter roller creates the layer adhesion.
  • Top-to-top rollers are a sub-form of top-to-flat rollers.
  • two similar positively engraved embossing rollers are used, in which the embossing elements are arranged exactly opposite one another. The required pressure is generated between the smooth heads of the embossing elements against each other.
  • the multi-ply tissue product is passed through the gap between the rollers and, after the embossing, is further processed into the desired end product.
  • the invention is therefore based on the object of providing an embossing roller arrangement or a method for producing such an embossing roller arrangement in which a significantly lower pressure force between the embossing rollers is necessary in order to produce the desired layer adhesion.
  • the independent claim 14 relates to a corresponding method for producing an embossing roller arrangement.
  • Advantageous embodiments of the invention are each the subject of the dependent claims.
  • an embossing roller arrangement for producing at least two-ply tissues, such as in particular handkerchiefs and / or serviettes and / or kitchen rolls and / or toilet paper, is proposed, with a pair of rollers rolling on top of one another, the pair of rollers comprising an embossing roller and an opposing roller, and with at least one on the Roller pairing formed embossing arrangement, wherein the embossing arrangement on the counter roller comprises a recess and on the embossing roller a projection engaging in the recess, the recess having an embossing edge surrounding the recess opening and the projection having at least partially angled side flanks with which the projection when dipping into the Recess at least partially contacted the embossed edge.
  • a plurality of the embossing arrangements are preferably formed in a regular, irregular or patterned shape on the pair of rollers.
  • the active embossing area is reduced, so that the pressure force acting on the embossing roller or the counter roller while maintaining the specific pressure required for the Generation of the layer adhesion of the tissue layers is required, can be reduced.
  • the active embossed area is now reduced from a relatively large area known from the prior art to a very narrow embossed edge.
  • Another advantage of the arrangement according to the invention is that there is no thickening of the embossed Material takes place, as is the case, for example, when embossing with a Union roller.
  • the radius of the embossed edge can in particular be between 0.1 mm and 5 mm.
  • the projection can have a projection height with which the projection extends away from the surface of the embossing roller, wherein the projection tapers at least in sections in the direction of the upper side of the projection.
  • the projection can taper conically.
  • the projection can have a trapezoidal cross section.
  • the projection can taper in a parabolic manner.
  • the width of the upper side of the projection can be narrower and the width of the projection base can be wider than the width of the recess opening.
  • the recess can have a gradient which, at least in the region of the embossed edge, has a gradient angle which is smaller than the flank angle of the side flanks of the projection relative to the vertical.
  • the recess can have a rectangular cross section with vertical side walls, so that the gradient is 0 degrees with respect to the vertical.
  • the side flanks on both sides of the projection can each have an angle of greater than 0 degrees, so that the projection tapers towards the upper side of the projection.
  • the flank angle of the side flanks of the projection is preferably always more than 0 degrees, regardless of the gradient angle of the recess.
  • the recess can even have negative gradient angles, but the projection due to its beveled side flanks with an angle of greater than 0 degrees can still come to rest with its side flanks on the embossed edge.
  • the flank angle is greater than the slope angle by more than 5 degrees, preferably 10 degrees and particularly preferably 15 degrees.
  • the top side of the projection can be spaced apart from the base of the recess when it is immersed in the recess. This is achieved if the projection is designed in such a way that the side flanks of the projection come to rest against the embossed edge before the upper side of the projection touches the base of the recess. This is thus influenced by the width and the height of the projection and the flank angle of the side flanks, and on the other hand by the depth of the recess and the width of the recess opening.
  • the upper side of the projection can have a plateau.
  • the upper side of the projection can be pointed or rounded.
  • the projection can be axially symmetrical with respect to the vertical direction.
  • the projection can be designed as a body of revolution about its vertical central axis.
  • the recess can advantageously be axially symmetrical with respect to the vertical direction.
  • the recess can also be designed to be rotationally symmetrical about its vertical central axis.
  • both the recess and the projection are designed to be rotationally symmetrical.
  • the embossed edge can enclose the recess opening in a round, oval or polygonal shape.
  • the recess can also be designed in the form of a groove.
  • the round shape, alternatively also the oval shape, is particularly preferable, since with these shapes the adjustment accuracy of the rollers to one another must be the lowest.
  • the projection can also have a round, oval or polygonal outer circumference corresponding to the embossed edge.
  • a press is reached along the entire circumference of the embossed edge.
  • the side flanks of the projection can thus contact the embossed edge surrounding the recess opening over the entire circumference of the opening.
  • the height of the projection can be less than or equal to the depth of the recess.
  • an embossing roller arrangement comprising embossing at least one embossing arrangement formed on the pair of rollers by means of a direct laser process.
  • the method can further comprise the separate structuring of the embossing roller and counter roller by means of a laser unit using separate control data adapted to the different angles of flank angle and slope angle.
  • An embossing arrangement according to the invention can only be achieved by directly structuring both rollers by means of a suitable laser unit using control data adapted for the flank angle specification.
  • the engraving is achieved by direct evaporation of the roller material.
  • FIG. 1a shows a union roll arrangement
  • Figure 1b a top-to-flat roller arrangement
  • Figure 1c a top-to-top roller arrangement.
  • the Union roller arrangement has two engraved rollers, of which the embossing roller 2 is engraved positively and the counter roller 3 is engraved negatively, the embossing roller 2 being used as an engraving tool for the engraving of the counter roller 3.
  • the projection 6 of the embossing roller 2 corresponds to the recess 5 in the opposing roller and can be introduced into the opposing roller 3 in a form-fitting manner when the embossing roller 2 dips into the latter.
  • the adhesion of multi-layered tissues is generated via the pressure that results in the annular gap between the protrusion and the recess.
  • the top-to-flat roller arrangement Figure 1b has a positively engraved embossing roller 2 with projection 6 and a flat counter-roller 3, the embossing roller 2 being pressed against the smooth counter-roller 3 with high pressure. The pressing of the flat engraving head against the smooth counter roller 3 creates the layer adhesion.
  • the top-to-top roller arrangement in Figure 1c is a sub-form of the top-to-flat roller arrangement.
  • two similar positively engraved embossing rollers 2 are used, in which the identically formed projections 6 are arranged exactly opposite to each other. The required pressure is generated between the smooth engraving heads of the projections 6 against each other.
  • cross-sectional view of a projection 6 on an embossing roller 2 shows a trapezoidal projection 6 with angled side flanks 9 and a plateau 10 or a flat engraving head as the projection top.
  • the projection has a height Hv, a width Bvs at the base of the projection 6 and a wide Bvo at the top of the projection.
  • the side flanks 9 each have an angle ⁇ with respect to the embossing roller radius.
  • the illustrated cross-sectional view of a recess 5 on a counter roller 3 shows a trapezoidal recess 5 with an angled slope 11 and a flat recess base.
  • the recess 5 On its upper side or at the level of the counter-roll surface, the recess 5 has a recess opening 7 which has an opening width B A ⁇ .
  • the recess opening 7 is delimited by an embossed edge 8.
  • the recess opening 7 is preferably circular, so that the embossed edge 8 surrounds the recess in a correspondingly circular manner.
  • the recess 5 has a recess depth T A and a width B AG of the recess base.
  • the gradient 11 of the inner wall of the funnel-shaped recess 5 has an angle ⁇ with respect to the counter-roll radius.
  • FIG Figure 4 An embossing roller arrangement 1 according to the invention is shown in FIG Figure 4 shown.
  • the embossing arrangement 4 is shown at the moment of the rolling of the embossing roller 2 on the opposing roller 3, in which the projection 6 of the embossing roller is immersed in the recess 5 of the opposing roller 2 and the side flanks 9 of the projection 6 of the embossing roller 2 on the embossing edge 8 of the opposing roller 3 so that a local pressure is generated there.
  • a circular recess opening 7 a corresponding circular embossing of the multilayer tissue material is created there.
  • the width Bvo of the upper side of the projection 6 is smaller than the width B A ⁇ of the recess opening 7 and that the width Bvs of the base of the projection 6 is wider than the recess opening 7. Furthermore, in each case in the gap below the Embossed edge 8 an angle difference ⁇ minus ⁇ between the angle ⁇ of the side flanks 9 and the angle ⁇ of the slope 11 of the recess 5. In the embodiment shown, both the side flanks 9 and the slope 11 of the recess funnel are flat, so that the angle difference ⁇ minus ⁇ to to the bottom of the recess 5 exists.
  • the projection 6 has a flattened projection upper side or a plateau 10 in order to prevent contact between this upper side and the base of the recess 5 or to ensure a pressure between the side flanks 9 and the embossed edge 8.
  • the embossing depth over the width of the projection 6 as well as varying the flank angle ⁇ .
  • the result is how deep the projection 6 protrudes into the recess 5 or at which point on the side flanks 9 the embossed edge 8 comes to rest.
  • the distance between the surfaces of the embossing roller two and the counter roller three is influenced. For example, in the case of several tissue layers, a larger distance can be selected and, in the case of a smaller number of layers, a smaller distance can be produced by varying the parameters mentioned above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
  • Sanitary Thin Papers (AREA)
EP19217210.4A 2019-12-17 2019-12-17 Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur Active EP3838579B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES19217210T ES2949012T3 (es) 2019-12-17 2019-12-17 Disposición de rodillos de estampado para producir papeles tisú de al menos dos capas y procedimiento para producir una disposición de rodillos de estampado
PT192172104T PT3838579T (pt) 2019-12-17 2019-12-17 Montagem de rolos de gofragem para fabrico de papel-tissue com pelo menos duas camadas, e procedimento para fabrico de uma montagem de rolos de gofragem
EP19217210.4A EP3838579B1 (fr) 2019-12-17 2019-12-17 Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19217210.4A EP3838579B1 (fr) 2019-12-17 2019-12-17 Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur

Publications (2)

Publication Number Publication Date
EP3838579A1 true EP3838579A1 (fr) 2021-06-23
EP3838579B1 EP3838579B1 (fr) 2023-04-19

Family

ID=68944351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19217210.4A Active EP3838579B1 (fr) 2019-12-17 2019-12-17 Dispositif de cylindre gaufreur permettant de fabriquer des tissus au moins bicouche et procédé de fabrication d'un dispositif de cylindre gaufreur

Country Status (3)

Country Link
EP (1) EP3838579B1 (fr)
ES (1) ES2949012T3 (fr)
PT (1) PT3838579T (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133331A1 (de) 2021-12-15 2023-06-15 Matthews International GmbH Walzenanordnung zur Herstellung von zerstörungsfrei geprägtem Barrierepapier zum luft- und wasserdampfdichten Verschließen von Verpackungen und entsprechendes Verfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834809A (en) * 1953-07-06 1958-05-13 Scott Paper Co Absorbent paper
EP0338792A2 (fr) * 1988-04-22 1989-10-25 Scott Paper Company Produit de papier gaufré
US5503896A (en) * 1991-02-22 1996-04-02 Kimberly-Clark Corporation Method for embossing webs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834809A (en) * 1953-07-06 1958-05-13 Scott Paper Co Absorbent paper
EP0338792A2 (fr) * 1988-04-22 1989-10-25 Scott Paper Company Produit de papier gaufré
US5503896A (en) * 1991-02-22 1996-04-02 Kimberly-Clark Corporation Method for embossing webs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133331A1 (de) 2021-12-15 2023-06-15 Matthews International GmbH Walzenanordnung zur Herstellung von zerstörungsfrei geprägtem Barrierepapier zum luft- und wasserdampfdichten Verschließen von Verpackungen und entsprechendes Verfahren

Also Published As

Publication number Publication date
ES2949012T3 (es) 2023-09-25
PT3838579T (pt) 2023-06-21
EP3838579B1 (fr) 2023-04-19

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