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WO2003043820A1 - Papier mince multiplis et procede de fabrication - Google Patents

Papier mince multiplis et procede de fabrication Download PDF

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Publication number
WO2003043820A1
WO2003043820A1 PCT/SE2002/002132 SE0202132W WO03043820A1 WO 2003043820 A1 WO2003043820 A1 WO 2003043820A1 SE 0202132 W SE0202132 W SE 0202132W WO 03043820 A1 WO03043820 A1 WO 03043820A1
Authority
WO
WIPO (PCT)
Prior art keywords
tissue paper
tube
web
edges
tissue
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.)
Ceased
Application number
PCT/SE2002/002132
Other languages
English (en)
Inventor
Urban Widlung
Anna MÅNSSON
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 Hygiene and Health AB
Original Assignee
SCA Hygiene Products AB
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 SCA Hygiene Products AB filed Critical SCA Hygiene Products AB
Priority to AU2002353712A priority Critical patent/AU2002353712A1/en
Publication of WO2003043820A1 publication Critical patent/WO2003043820A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/28—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving assembly of non-flat intermediate products which are flattened at a later step, e.g. tubes
    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line

Definitions

  • the present invention refers to a multiply tissue paper and a method of making it.
  • the tissue paper may be may be toilet paper, kitchen rolls, hand towels, wipes, napkins, facial tissue etc.
  • tissue plies it is very common to laminate two or more tissue plies in order to produce a final multiply tissue product.
  • a more flexible and softer tissue product is obtained as compared to if one single ply with a corresponding thickness and basis weight had been produced as for the laminated product.
  • the absorbent capacity and the bulk are moreover improved.
  • the lamination of two or more tissue plies is often made by means of gluing or embossing.
  • a tissue paper ply has different properties, especially different strength properties, in MD (machine direction) and CD (cross direction), so that the strength is considerably higher in MD than in CD. Bringing together two or more paper plies on top of each other will not change this difference, since the plies will have the same orientation.
  • a further problem with multiply tissue products is that the plies easily separate from each other.
  • the object of the present invention is to provide a method of making a multiply tissue paper which has more equivalent properties in MD and CD than conventional tissue paper. It should further involve an increased flexibility in converting with regard to the width of the web used in the converting operation.
  • multiply web in this respect refers to a tissue paper web having two or more plies.
  • the tissue web is pulled out from the centre of a centre-fed roll of tissue paper web material, said web material being pulled out in the form of a helically twisted tube-like or flattened tube-like material, in which the edges of the web material of adjacent revolutions are either overlapping, located substantially edge to edge or the edges of adjacent revolutions are located a small distance apart and, in the case of a tube-like shape, flattening the thus formed tube to form a multiply tissue paper web.
  • At least two webs of tissue paper are wound to form said tube-shaped member or flattened tube.
  • Said at least two webs of tissue paper may be different as to fibrous or chemical composition and/or physical properties.
  • the at least two webs of tissue paper are in one embodiment of the invention wound in counter directions.
  • the overlapping edges of the tissue paper web are preferably joined to each other by gluing, embossing or the like.
  • the invention further refers to a multi ply tissue paper web comprising a flattened tube of a helically wound web material in which adjacent edges of the wound web material are either overlapping, located substantially edge to edge or the edges of adjacent revolutions are located a small distance apart.
  • the multi ply tissue comprises as least two helically wound tissue paper webs that are different as to fibrous or chemical composition and/or physical properties. At least two tissue paper webs may according to a further embodiment be are helically wound in counter directions.
  • FIG. 1 is an illustration of a flat tissue paper web.
  • Fig. 2 shows the tissue paper web having been helically wound to form a tube-like shape.
  • Fig. 3 shows the tube of Fig. 2 in a flattened condition forming the final multiply tissue paper web.
  • Fig. 4 shows an alternative embodiment in which two tissue paper webs are helically wounded about a spindle in counter directions.
  • Fig. 5 illustrates a method of forming a multiply web material from a centre-fed roll of material.
  • a tissue paper is defined as a soft absorbent paper having a basis weight below 65 g/m 2 and typically between 10 and 50 g/m 2 . Its density is typically below 0.60 g/cm 3 , preferably below 0.30 g/cm 3 and more preferably between 0.08 and 0.20 g/cm 3 .
  • Moist tissue paper webs are usually dried against one or more heated rolls. A method which is commonly used for tissue paper is so called yankee drying. At yankee drying the moist paper web is pressed against a steam-heated yankee cylinder, which can have a very large diameter. The paper web is usually creped against the yankee cylinder.
  • TAD through-air-drying
  • impulse drying shortly involves that the moist paper web is passed through the press nip between a press roll or press shoe and a heated roll, which is heated to such a high temperature that a quick and strong steam generation occurs in the interface between the moist paper web and the heated roll.
  • the three-dimensional embossment pattern is accomplished by means of a pattern provided on the heated roll.
  • the counter means for example a press felt, against which the paper is pressed in connection with the simultaneous impulse drying and shaping, has a non-rigid surface.
  • the present invention refers to all types of tissue paper.
  • the tissue paper may be creped or non-creped.
  • the creping may take place in wet or dry condition. It may further be foreshortened by any other methods, such as so called rush transfer between wires.
  • the fibers contained in the tissue paper are mainly pulp fibers from chemical pulp, mechanical pulp, thermo mechanical pulp, chemo mechanical pulp and/or chemo thermo mechanical pulp (CTMP).
  • the fibers may also be recycled fibers.
  • the tissue paper may also contain other types of fibers enhancing e.g. strength, absorption or softness of the paper. These fibers may be made from regenerated cellulose or synthetic material such as polyolefins, polyesters, polyamides etc.
  • the tissue paper coming out from the tissue machine as a single-ply paper sheet may be converted to the final tissue product in many ways, for example embossed, laminated to a multi-ply product, rolled or folded.
  • a laminated multi-ply tissue product comprises at least two tissue plies, which are often joined by either adhesive or mechanically.
  • the adhesive may be applied all over the paper or just in regions, for example dots or lines, or only along the edges of the product.
  • the mechanical methods are mainly embossing either over the entire area of the plies or only along the edges, so called edge embossing.
  • the plies as mostly easy detectable and may often be separated from each other as single plies.
  • the tissue paper coming out from the tissue paper machine may comprise one or more layers. In the case of more than one layer this is accomplished either in a multi-layered headbox, by forming a new layer on top of an already formed layer or by couching together already formed layers. These layers can not or only with considerable difficulty be separated from each other and are joined mainly by hydrogen bonds.
  • the different layers may be identical or may have different properties regarding for example fibre composition and chemical composition.
  • a flat tissue paper web 10 having a width a and longitudinal edges 11.
  • the flat tissue paper web 10 is formed into a tube 12 by winding it a plurality of revolutions in a helical manner as is shown in Fig. 2.
  • the edges 11 of the tissue paper web 10 of adjacent revolutions are overlapping or located substantially edge to edge. The overlap can be small, big or none at all. Alternatively the edges 11 of the tissue paper web 10 of adjacent revolutions are located a small distance apart.
  • the longitudinal edges 11 of the tissue paper web 10 may be coated with glue before winding the tissue paper web into the tube-shape, so that the overlapping edges will be glued to each other, or in the case of non- overlapping edges they will be glued to a surface of the web material. It would also be possible to join them to each other by mechanical embossing, or alternatively not join them at all.
  • the radius of the tube may be adjusted by adjusting the angle of climb ⁇ of the windings, so that the diameter d of the tube will decrease with an increasing angle ⁇ .
  • tissue paper webs 10 and 10 ' are supplied to the winding station. This is illustrated with dashed lines in Fig. 2.
  • the at least two webs 10 may completely or partly overlap each other or be located edge to edge or a small distance apart.
  • the at least two webs 10 may be of the same or different kinds of tissue paper materials. In the case different tissue paper materials are used a multifunctional end product can be created. Said different tissue paper materials may be different with respect to fibrous or chemical composition and/or physical properties, such as basis weight, density, structure, embossing, apertured, non-apertured etc.
  • the tube 12 is flattened out to form a double-ply web 13 as shown in Fig. 3.
  • the width of the double-ply web 13 thus formed will be ⁇ ⁇ d/2.
  • the resulting web material 13 will be a substantially two-ply material.
  • the resulting web material 13 will at least in parts thereof comprise three and four plies.
  • the flat paper web 10 is helically wound around a flat member so that a "flattened tube" according to Fig. 3 is formed directly. This means that the step illustrated in Fig. 2 is omitted.
  • the resulting two- or multiply web 13 formed is then cut into the desired lengths and converted to final products such, for example rolls or folded products such as towels, napkins and the like.
  • the web may also undergo treatments like embossing and the like.
  • two tissue webs 10 and 10 ' are wound around a spindle 17 in a helical manner and in counter directions.
  • the two tissue webs may be the same or different as explained above.
  • the edges of adjacent revolutions may overlap each other, be located edge to edge or a small distance apart as is disclosed above.
  • the thus formed tube-shaped member is withdrawn form the spindle 17 and flattened between a pair of pressure rolls 18 to form a multiply web comprising at least four plies.
  • FIG. 5 An alternative way of forming the multiply tissue paper web according to the invention is illustrated in Fig. 5.
  • the numeral 14 denotes a centre-fed roll of web material from the centre hole of which the tissue paper web material is pulled out in the form of a tube-like 15 string of web material consisting of a helically twisted tissue web material. The edges of the web material of adjacent revolutions are located a small distance apart.
  • the diameter of the tube 15 may be adjustable by varying said speed of pulling out the web material.
  • the tube 15 is at or shortly after the exit from the centre hole flattened to form a multiply tissue paper web 16.
  • the roll of web material is flattened itself, so that the web material will be pulled out from the centre hole in the form of a flattened tube member.
  • the number of plies in the multiply product created can be easily varied by varying the degree of overlap between the adjacent revolutions.

Landscapes

  • Sanitary Thin Papers (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande de papier mince multiplis. Cette bande de papier mince (10) est enroulée de manière hélicoïdale sur une pluralité de tours, de sorte à former un tube (12) ou, en variante, un tube aplati, dans lequel les bords (11) de la bande de papier mince des tours adjacents se chevauchent partiellement et sont disposés sensiblement bord à bord ou éloignés par une petite distance. Le tube ainsi formé est ensuite aplati pour former une bande double-plis ou multiplis (13). En variante, la bande de papier mince est étirée sous forme de tube torsadé hélicoïdal (15) à partir du centre d'un rouleau à alimentation centrale (14) de matériau en bande, puis le tube est aplati.
PCT/SE2002/002132 2001-11-21 2002-11-21 Papier mince multiplis et procede de fabrication Ceased WO2003043820A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002353712A AU2002353712A1 (en) 2001-11-21 2002-11-21 A multiply tissue paper and a method of making it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0103902-3 2001-11-21
SE0103902A SE0103902D0 (sv) 2001-11-21 2001-11-21 A multiplytissue paper of nonwoven material and a method of making it

Publications (1)

Publication Number Publication Date
WO2003043820A1 true WO2003043820A1 (fr) 2003-05-30

Family

ID=20286077

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/002132 Ceased WO2003043820A1 (fr) 2001-11-21 2002-11-21 Papier mince multiplis et procede de fabrication

Country Status (3)

Country Link
AU (1) AU2002353712A1 (fr)
SE (1) SE0103902D0 (fr)
WO (1) WO2003043820A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515792A (en) * 1919-03-11 1924-11-18 Respro Inc Unwoven fabric and process for making the same
US3810803A (en) * 1971-11-05 1974-05-14 Us Army Continuous fiber reinforcement,cross-ply test specimen
EP0518693A1 (fr) * 1991-06-12 1992-12-16 Toray Industries, Inc. Procédé pour la réalisation d'étoffe tubulaire non-tissée, et le nontissé tubulaire réalisé avec celui-ci
EP0631963A1 (fr) * 1993-07-02 1995-01-04 Sonoco Products Company Noyau de bobinage à angle de spirale important
US5766725A (en) * 1993-06-23 1998-06-16 Dsm N.V. Composite web of mutually parallel fibres in a matrix
WO2000064663A2 (fr) * 1999-04-08 2000-11-02 Alliedsignal Inc. Article lamine et procede de fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515792A (en) * 1919-03-11 1924-11-18 Respro Inc Unwoven fabric and process for making the same
US3810803A (en) * 1971-11-05 1974-05-14 Us Army Continuous fiber reinforcement,cross-ply test specimen
EP0518693A1 (fr) * 1991-06-12 1992-12-16 Toray Industries, Inc. Procédé pour la réalisation d'étoffe tubulaire non-tissée, et le nontissé tubulaire réalisé avec celui-ci
US5766725A (en) * 1993-06-23 1998-06-16 Dsm N.V. Composite web of mutually parallel fibres in a matrix
EP0631963A1 (fr) * 1993-07-02 1995-01-04 Sonoco Products Company Noyau de bobinage à angle de spirale important
WO2000064663A2 (fr) * 1999-04-08 2000-11-02 Alliedsignal Inc. Article lamine et procede de fabrication

Also Published As

Publication number Publication date
SE0103902D0 (sv) 2001-11-21
AU2002353712A1 (en) 2003-06-10

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