EP1216144B1 - Verfahren und vorrichtung zum prägen von papierbahnen - Google Patents

Verfahren und vorrichtung zum prägen von papierbahnen Download PDF

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Publication number
EP1216144B1
EP1216144B1 EP00958288A EP00958288A EP1216144B1 EP 1216144 B1 EP1216144 B1 EP 1216144B1 EP 00958288 A EP00958288 A EP 00958288A EP 00958288 A EP00958288 A EP 00958288A EP 1216144 B1 EP1216144 B1 EP 1216144B1
Authority
EP
European Patent Office
Prior art keywords
embossing
roller
unit
paper
contrast
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.)
Revoked
Application number
EP00958288A
Other languages
English (en)
French (fr)
Other versions
EP1216144A1 (de
Inventor
Sauro Tronchetti
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.)
Industrie Cartarie Tronchetti SpA
Original Assignee
Industrie Cartarie Tronchetti SpA
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
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Application filed by Industrie Cartarie Tronchetti SpA filed Critical Industrie Cartarie Tronchetti SpA
Publication of EP1216144A1 publication Critical patent/EP1216144A1/de
Application granted granted Critical
Publication of EP1216144B1 publication Critical patent/EP1216144B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • B31F2201/0728—Material
    • 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
    • B31F2201/0771—Other aspects of the embossing operations
    • B31F2201/0774—Multiple successive embossing operations
    • 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
    • B31F2201/0782—Layout of the complete embossing machine, of the embossing line

Definitions

  • the present invention relates to a method and an apparatus for embossing paper webs, particularly for forming products such as tissues, for example toilet tissue.
  • Paper embossing systems for example for producing composite two-ply rolls of kitchen paper, generally include a roll unwinding device which is suitable to feed two plies of paper to an embossing unit which can be provided with a system for pasting the two plies.
  • the embossing unit may include two embossing rollers, each provided with a plurality of protrusions which are arranged in parallel rows and each cooperating with a respective presser roller to emboss each sheet.
  • One of the two embossing rollers can be coated with paste so as to paste the two sheets.
  • the protrusions of the embossing rollers are formed by mechanical machining or by chemical processes for removing material, so that the sheets have a uniform stippling constituted by parallel rows of points directed inward, i.e., on the facing sides of the sheets.
  • a knurling unit which is suitable to knurl the roll in order to join the two plies.
  • US-5,913,765 discloses a system for embossing a pattern on a paper towel constituted by a first pair of embossing rollers that are patterned to impress a fine preparatory base pattern onto the web, in order to create stretchability in the paper, and a second pair of embossing rollers that are patterned to impress a final pattern onto the web.
  • EP-A-0816058 discloses an embossing apparatus constituted by two embossing units that provide two different embossing patterns that produce a complex pattern on the paper.
  • the aim of the present invention is to provide a method and an apparatus which can overcome the drawbacks of the prior art.
  • Another object of the present invention is to provide a system which is capable of producing ornamental patterns or designs, with a second embossing, without altering the first foundation embossing.
  • Another object of the present invention is to provide a method which is capable of producing ornamental patterns or designs of varying complexity according to requirements and in a highly versatile way, i.e., so that it is possible to change the design rapidly and cheaply.
  • Another object of the present invention is to provide an embossing method which can produce even complex ornamental patterns on the finished product.
  • Another object of the present invention is to provide a method and an apparatus which provides more flexible management, in terms of production, than prior art systems for producing complex designs.
  • an apparatus for embossing paper webs particularly for producing products of the tissue type, such as toilet tissue, comprising a first embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embossing unit which is constituted by at least one embossing roller providing a first embossing on said paper web, a second embo
  • embossing unit which is located downstream of said first embossing unit and provides a second embossing on said paper, said second embossing being deeper than the thickness of said web, plus a certain value, characterized in that said second embossing unit comprises two embossing rollers which operate alternatively on the same contrast roller in order to vary the design of the second embossing.
  • a machine for performing so-called point-to-point embossing is shown; the machine is generally designated by the reference numeral 1 and includes a feeder (not shown) which is suitable to feed a first embossing unit 5 with two plies of paper 7 and 9.
  • the first embossing unit includes a first embossing roller 11, with a corresponding rubber roller 13, and a second embossing roller 15, with a corresponding rubber roller 17.
  • a pasting device 19 which is suitable to spread paste onto the roller 15 in order to paste the two plies 7 and 9 together.
  • the output of the first embossing unit is a web of embossed paper 21 which, according to the invention, is passed through a second embossing unit 10 which is constituted, in the illustrated example, by an embossing roller 31 which cooperates with a contrast roller 23.
  • the roller 31 is made of steel, is machined in relief and is suitable to work in contrast with the roller 23, which is made of rubber.
  • the contrast roller 23 also can be made of steel and be provided with recesses for receiving the points of the roller 31.
  • the recesses of the contrast roller are advantageously shallower than the height of the points of the roller 31.
  • the embossing roller 31 may have a jacket which is suitable to support a plate on which the design is formed by virtue of various methods which are known in the field.
  • the contrast roller is made of rubber.
  • the embossing performed by the second embossing unit is at least equal in depth to the thickness of the two sheets plus a certain value, which corresponds to the intended depth of the second ornamental pattern.
  • the value is equal to the depth of the penetration of the points of the embossing roller into the rubber roller.
  • the value of the depth of the second embossing could be approximately 1 mm, to which a processing margin must be added.
  • the second embossing unit may have a second embossing roller (not shown) which acts on the same contrast roller 23, alternatively to the roller 31.
  • a second embossing roller (not shown) which acts on the same contrast roller 23, alternatively to the roller 31.
  • the system according to the invention has some important advantages: it is in fact possible to change the design on the paper in a very short time.
  • embossing rollers in the second embossing unit allows to vary the ornamental pattern almost instantaneously, simply by actuating one roller instead of the other.
  • the web 21 is thus subjected to a second embossing which is superimposed on the first embossing performed by the first embossing unit.
  • Figure 2 illustrates an embossing machine, generally designated by the reference numeral 101, for performing embossing of the DERL/DESL type, which includes a feeder (not shown) which is suitable to feed a first embossing unit 105 with two plies of paper 107, 109.
  • the first embossing unit includes a first embossing roller 111, with the corresponding rubber roller 113, and a second embossing roller 115, with the corresponding rubber roller 117.
  • there is a pasting device 119 for pasting the two plies 7 and 9.
  • a web of embossed paper 121 exits from the first embossing unit and, according to the invention, is passed through the second embossing unit 10, constituted by the embossing roller 31 which cooperates with the contrast roller 23, as described above.
  • the machine according to the invention allows to produce complex designs and ornamental patterns. While the first embossing unit can provide a conventional geometric pattern, the second embossing unit can in fact be used to superimpose a particular design.
  • the invention achieves the intended aim and objects; it is in fact extremely simple to provide even complex ornamental patterns by superimposing two separate embossings without however altering the foundation embossing.
  • the machine according to the invention is extremely flexible; it is in fact possible to vary the design on the paper simply by replacing the second embossing roller.
  • the second embossing unit can be easily excluded if one wishes to emboss the paper in a conventional manner with a simple design due to production requirements.
  • the invention is particularly advantageous for products constituted by two or more plies.
  • the second embossing can also be utilized to mutually paste the plies, if paste has been spread onto one of the two plies in the first embossing step.
  • the materials used, as well as the dimensions, may of course be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Replacement Of Web Rolls (AREA)
  • Sanitary Thin Papers (AREA)

Claims (3)

  1. Vorrichtung zum Prägen von Papierbahnen, im wesentlichen zur Herstellung von Hygienetuchprodukten, wie Toilettenpapier, aufweisend eine erste Prägeeinheit (5), welche durch wenigstens eine Prägerolle zum Vorsehen einer ersten Prägung auf der Papierbahn ausgebildet ist, eine zweite Prägeeinheit (10), welche in Förderrichtung nach der ersten Prägeeinheit (5) angeordnet ist und eine zweite Prägung auf dem Papier vorsieht, wobei die zweite Prägung tiefer als die Stärke der Bahn zuzüglich eines gewissen Wertes ist, dadurch gekennzeichnet, daß die zweite Prägeeinheit (10) zwei Prägerollen aufweist, welche abwechselnd auf derselben Gegenrolle operieren, um das Design der zweiten Prägung zu variieren.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die zweite Prägeeinheit (10) eine Stahlrolle aufweist, welche reliefartig bearbeitet und dazu geeignet ist, gegen eine aus Gummi bestehende Gegenrolle zu arbeiten.
  3. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die zweite Prägeeinheit (10) eine männliche Rolle aus Stahl aufweist, welche reliefartig bearbeitet und dazu geeignet ist, gegen eine weibliche Gegenrolle aus Stahl zu arbeiten.
EP00958288A 1999-07-27 2000-07-24 Verfahren und vorrichtung zum prägen von papierbahnen Revoked EP1216144B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999MI001668A IT1313577B1 (it) 1999-07-27 1999-07-27 Metodo ed apparecchiatura per goffrare fogli di carta in rotolo.
ITMI991668 1999-07-27
PCT/EP2000/007066 WO2001007245A1 (en) 1999-07-27 2000-07-24 Method and apparatus for embossing paper webs

Publications (2)

Publication Number Publication Date
EP1216144A1 EP1216144A1 (de) 2002-06-26
EP1216144B1 true EP1216144B1 (de) 2005-05-04

Family

ID=11383429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958288A Revoked EP1216144B1 (de) 1999-07-27 2000-07-24 Verfahren und vorrichtung zum prägen von papierbahnen

Country Status (7)

Country Link
EP (1) EP1216144B1 (de)
AT (1) ATE294700T1 (de)
AU (1) AU6986000A (de)
DE (1) DE60019942T2 (de)
ES (1) ES2238305T3 (de)
IT (1) IT1313577B1 (de)
WO (1) WO2001007245A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529179A (zh) * 2012-01-06 2012-07-04 金红叶纸业集团有限公司 生活用纸、造纸设备及制造方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014077751A1 (en) * 2012-11-16 2014-05-22 Sca Hygiene Products Ab Method for embossing a multi-ply paper product and an embossed multi-ply paper product
ES2578830B1 (es) * 2015-01-29 2017-08-10 L.C. Paper 1881, S. A. Procedimiento de obtención de papel gofrado de capa única y unidad de gofrado de una lámina de papel crepado de capa única
IT202000013255A1 (it) * 2020-06-04 2021-12-04 Pack Service S R L Procedimento per la produzione di articoli in carta tissue

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443629A (en) * 1974-12-18 1976-07-21 Scott Paper Co Absorbent fibrous sheet material and method and apparatus for making it
US4483728A (en) * 1980-07-14 1984-11-20 Kimberly-Clark Corporation Relieved patterned marrying roll
US5913765A (en) * 1995-03-02 1999-06-22 Kimberly-Clark Worldwide, Inc. System and method for embossing a pattern on a consumer paper product
IT240761Y1 (it) * 1996-07-01 2001-04-11 Ind Cartarie Tronchetti Spa Macchina goffratrice, particolarmente per carta in rotolo
FR2773515B1 (fr) * 1998-01-12 2000-03-03 Fort James France Machine pour le traitement mecanique du papier comportant des moyens perfectionnes de support d'un rouleau et procede de remplacement des rouleaux d'une telle machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529179A (zh) * 2012-01-06 2012-07-04 金红叶纸业集团有限公司 生活用纸、造纸设备及制造方法

Also Published As

Publication number Publication date
ATE294700T1 (de) 2005-05-15
WO2001007245A1 (en) 2001-02-01
DE60019942D1 (de) 2005-06-09
ITMI991668A0 (it) 1999-07-27
EP1216144A1 (de) 2002-06-26
DE60019942T2 (de) 2006-05-04
AU6986000A (en) 2001-02-13
ITMI991668A1 (it) 2001-01-27
ES2238305T3 (es) 2005-09-01
IT1313577B1 (it) 2002-09-09

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