EP1533112B1 - Apparatus for manufacturing multiple-ply paper products by knurling - Google Patents

Apparatus for manufacturing multiple-ply paper products by knurling Download PDF

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Publication number
EP1533112B1
EP1533112B1 EP04025879A EP04025879A EP1533112B1 EP 1533112 B1 EP1533112 B1 EP 1533112B1 EP 04025879 A EP04025879 A EP 04025879A EP 04025879 A EP04025879 A EP 04025879A EP 1533112 B1 EP1533112 B1 EP 1533112B1
Authority
EP
European Patent Office
Prior art keywords
knurling
paper
wheels
wheel
patterns
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.)
Active
Application number
EP04025879A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1533112A1 (en
Inventor
Massimo Nofori
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
Application filed by Industrie Cartarie Tronchetti SpA filed Critical Industrie Cartarie Tronchetti SpA
Priority to PL04025879T priority Critical patent/PL1533112T3/pl
Publication of EP1533112A1 publication Critical patent/EP1533112A1/en
Application granted granted Critical
Publication of EP1533112B1 publication Critical patent/EP1533112B1/en
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
    • B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/02—Attaching together sheets, strips or webs; Reinforcing edges by crimping or slotting or perforating
    • B31F5/022—Attaching together sheets, strips or webs; Reinforcing edges by crimping or slotting or perforating using a rotary tool
    • 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
    • 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
    • B31F2201/0753—Roller supporting, positioning, driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • B31F2201/0764—Multi-layered the layers being nested
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0782—Layout of the complete embossing machine, of the embossing line
    • 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 present invention relates to an apparatus for manufacturing multiple-ply paper products by knurling.
  • the invention relates in particular to so-called "tissue” products, such as toilet paper, paper handkerchiefs, rolls of absorbent paper, et cetera, constituted by at least two plies.
  • the knurling systems known in the art have a drawback in that the part of ply that is deformed by the knurling tools has the appearance of a line that is generally not arranged symmetrically with respect to the product.
  • US-5622734 discloses an apparatus for producing crimp-bonded fibrous cellulosic laminate comprising a plurality of crimp elements configured in a discontinuous pattern aligned on an axis that is parallel to the cross machine direction.
  • the crimp elements are arranged on one side of an anvil rod, opposite to a drive roll.
  • the aim of the present invention is to provide an apparatus for manufacturing multiple-ply paper products by knurling that overcomes the drawbacks of the cited prior art.
  • a particular object of the invention is to provide an apparatus that is capable of maintaining high softness characteristics of the product without using paste and at the same time of solving the discontinuities of conventional knurling.
  • a further object of the invention is to provide an apparatus that allows to produce the knurling wheels by laser engraving and etching and therefore with reduced costs.
  • an apparatus generally designated by the reference numeral 1, comprises a knurling wheel holder 2 which is substantially constituted by a shaft 3 that supports a plurality of knurling wheels 4, which act in contrast with a contrast roller 5 in order to join two plies of paper into a single ribbon 6.
  • the knurling wheels 4 have dimensions that are six to thirtysix times larger than those of conventional knurling wheels.
  • conventional knurling wheels have a width comprised between 5 and 30 mm
  • the knurling wheel according to the present invention is 181 mm wide.
  • the knurling wheel has an operating principle that is similar to that of a conventional knurling wheel but, by having a larger surface available, it allows to create decorations in relief which are then transferred to the paper.
  • the decorative patterns which in the illustrated example are wavy, are arranged so that, despite appearing to be separate, they allow the knurling wheel to have a continuous contact with the paper and the contrast roller, preventing vibrations that would be harmful for the paper and the knurling wheel.
  • the spacing A between each pattern allows to decorate with continuity in a transverse direction despite using a plurality of knurling rollers 4 rather than a single roller. All this is clearly beneficial to the dimensions of the knurling wheels, which in the specific case have a diameter of 150 mm and despite the intense pressures involved do not flex, because their transverse dimension is 181 mm, and therefore is short with respect to the diameter.
  • the distance between the knurling wheels is such as to keep the patterns 7 with a minimal variation from knurling wheel to knurling wheel, which is reflected on the paper 6 as a design continuity effect.
  • the knurling wheel is provided by using a material that is suitable to undergo laser engraving and etching and therefore has a low cost.
  • Figure 9 illustrates a particular embodiment of the decorative patterns, designated by the reference numeral 17, which are characterized by the insertion, between one design and the next, of a series of protrusions 18 that allow contact between the knurling wheel and the contrast roller but do not change the final effect of the decoration, because they blend with the embossing of the paper.
  • the apparatus allows to provide a decoration on an existing embossed base by using a knurling wheel in which the protrusions are higher than the protrusions of the base.
  • FIGS 4 and 5 illustrate an embodiment of the apparatus, designated by the reference numeral 101, according to the invention.
  • the contrast roller 5 may flex during rotation, reducing the cohesion of the paper plies.
  • the knurling wheels 4 can be made to operate in mutually opposite directions on the same contrast roller 5, so as to cancel out the bending. With such arrangement one is free to vary the distance B at will.
  • the distance between the knurling wheels 4 on the same shaft is approximately 210 mm.
  • the knurling wheels 4 can be supported by a single supporting shaft, as described above, or individually by a holder for each knurling wheel, as shown schematically in Figure 6 , which illustrates individual knurling wheels 4, each of which is supported by a holder 44 applied to a supporting beam 14.
  • An inflatable pad 8 is preferably interposed between the knurling wheels 4 and the supporting beam 14.
  • Figures 7 and 8 illustrate a further embodiment of the single-shaft knurling wheel holder system, in which the knurling wheels 4 are associated with the shaft 3, which is pushed at its two ends by power arms 10.
  • the power arms 10 act on a beam 11, which includes a series of intermediate supports 9 for the shaft 3, which avoid the flexing of the shaft.
  • the invention achieves the intended aim and objects, providing an apparatus that is capable of maintaining high characteristics of softness of the product without using adhesive and at the same time of solving the aesthetic problem of conventional knurling.
  • the apparatus according to the invention joins two or more plies of tissue paper and simultaneously decorates them by means of the impression left by the knurling tool.
  • the apparatus allows the plies to pass between the contrast roller and a series of knurling wheels, which are appropriately decorated in relief and are suitable, by means of the pressure applied to the contrast roller, to join the plies that are interposed between the contrast roller and the knurling wheel unit.
  • the apparatus according to the invention allows to join the paper plies and at the same time decorate them by using the technique of permanent deformation of the paper, which by virtue of the deformation also assumes a different coloring and impression and allows to recognize the decorative pattern.
  • Another characteristic of the invention consists in the particular arrangement of the decorative pattern along the circumference and in the transverse direction of the decorated wheel.
  • 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)
EP04025879A 2003-11-24 2004-11-02 Apparatus for manufacturing multiple-ply paper products by knurling Active EP1533112B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04025879T PL1533112T3 (pl) 2003-11-24 2004-11-02 Urządzenie do wytwarzania wielowarstwowych wyrobów papierowych techniką moletowania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT002279A ITMI20032279A1 (it) 2003-11-24 2003-11-24 Apparecchiatura per la fabbricazione di prodotti in carta a piu'veli mediante godronatura
ITMI20032279 2003-11-24

Publications (2)

Publication Number Publication Date
EP1533112A1 EP1533112A1 (en) 2005-05-25
EP1533112B1 true EP1533112B1 (en) 2012-09-19

Family

ID=34430776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04025879A Active EP1533112B1 (en) 2003-11-24 2004-11-02 Apparatus for manufacturing multiple-ply paper products by knurling

Country Status (4)

Country Link
EP (1) EP1533112B1 (it)
ES (1) ES2395271T3 (it)
IT (1) ITMI20032279A1 (it)
PL (1) PL1533112T3 (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056109A1 (de) * 2005-11-23 2007-05-24 WINKLER + DüNNEBIER AG Prägewalze und Verfahren zum Erzeugen eines Prägemusters in einer Materialbahn oder in einem Zuschnitt
FR2906184B1 (fr) 2006-09-27 2008-11-07 Georgia Pacific France Soc Par Procede d'association de plis formant une feuille absorbante
EP2281084A4 (en) 2008-05-27 2015-11-18 Georgia Pacific Consumer Prod ULTRA PREMIUM BATH TISSUE
IT1402321B1 (it) 2010-09-07 2013-08-30 Perini Fabio Spa Gruppo di mollettatura e prodotto cellulosico multivelo ottenuto con detto gruppo.
CN102407614B (zh) * 2011-11-14 2013-09-18 佛山市南海区德昌誉机械制造有限公司 一种纸巾加工设备上用的压花装置及其压花生产工艺
CN102514243A (zh) * 2011-12-30 2012-06-27 青岛佳友精密机械有限公司 交错压线轮纵切压痕机
EP2990194A1 (en) 2014-08-29 2016-03-02 Industrie Cartarie Tronchetti S.p.A. Laminating unit for joining two or more plies for producing paper items
ITUB20152765A1 (it) 2015-08-03 2017-02-03 Ind Cartarie Tronchetti Spa Apparecchiatura per l?unione di due o piu veli di carta, per la produzione di prodotti interfogliati, particolarmente facial tissue
JP2017074613A (ja) * 2015-10-16 2017-04-20 トヨタ車体株式会社 ロール成形装置
ITUB20169873A1 (it) * 2016-01-08 2017-07-08 Ind Cartarie Tronchetti Spa Apparecchiatura per la fabbricazione di prodotti in carta a più veli
IT201800009090A1 (it) 2018-10-02 2020-04-02 Perini Fabio Spa Organo di mollettatura, gruppo di mollettatura per unire veli di materiale cellulosico, e metodo
IT202100015545A1 (it) * 2021-06-15 2022-12-15 Futura Spa Unita' di mollettura per unire veli di materiale cartaceo.
CN114603924B (zh) * 2022-03-07 2024-06-25 浙江奕威卫生用品有限公司 一种装配式压花装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543202A (en) * 1994-03-14 1996-08-06 Kimberly-Clark Corporation Process for producing a crimp-bonded fibrous cellulosic laminate
US6086715A (en) * 1998-11-23 2000-07-11 The Procter & Gamble Company Embossed multiply cellulosic fibrous structure having selective bond sites and process for producing the same
US6245273B1 (en) * 1998-12-30 2001-06-12 Kimberly-Clark Worldwide, Inc. Method for embossing and crimping a multi-layer sheet material web assembly
US20020148578A1 (en) * 2001-03-30 2002-10-17 Ian Reilly Device for applying an embossing to a web of tissue paper and method thereof
GB2380447B (en) * 2001-10-02 2004-01-14 Sca Hygiene Prod Gmbh Device and method for applying a spot embossing pattern to a web of multi-ply tissue paper

Also Published As

Publication number Publication date
EP1533112A1 (en) 2005-05-25
PL1533112T3 (pl) 2013-02-28
ITMI20032279A1 (it) 2005-05-25
ES2395271T3 (es) 2013-02-11

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