EP1529477B1 - Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets - Google Patents

Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets Download PDF

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Publication number
EP1529477B1
EP1529477B1 EP03025657.2A EP03025657A EP1529477B1 EP 1529477 B1 EP1529477 B1 EP 1529477B1 EP 03025657 A EP03025657 A EP 03025657A EP 1529477 B1 EP1529477 B1 EP 1529477B1
Authority
EP
European Patent Office
Prior art keywords
edges
paper
hygiene
paper sheet
wave
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.)
Expired - Lifetime
Application number
EP03025657.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1529477A1 (en
Inventor
Gunnar Bredahl
Günther Zöller
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 Germany GmbH
Original Assignee
SCA Hygiene Products 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 SCA Hygiene Products GmbH filed Critical SCA Hygiene Products GmbH
Priority to EP03025657.2A priority Critical patent/EP1529477B1/en
Priority to PL121242U priority patent/PL67723Y1/pl
Priority to PL04370969A priority patent/PL370969A1/pl
Priority to CO04110417A priority patent/CO5640061A2/es
Publication of EP1529477A1 publication Critical patent/EP1529477A1/en
Application granted granted Critical
Publication of EP1529477B1 publication Critical patent/EP1529477B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/16—Paper towels; Toilet paper; Holders therefor

Definitions

  • the present invention relates to a hygiene paper sheet having a substantially rectangular basic shape with four edges, wherein each two edges thereof oppose each other in a parallel relationship.
  • paper includes tissue paper, as well as non-woven.
  • a tissue paper is defined as a soft absorbent paper having a low basis weight.
  • the total basis weight of multiple-ply tissue products is preferably equal to a maximum of 65 g/m 2 , more preferably to a maximum of 50 g/m 2 .
  • Its density is typically below 0.6 g/cm 3 , preferably below 0.30 g/cm 3 and more preferably between 0.08 and 0.20 g/cm 3 .
  • tissue is distinguished from paper production by its extremely low basis weight and its much higher tensile energy absorption index (see DIN EN 12625-4 and DIN EN 12625-5). Paper and tissue paper also differ in general with regard to the modulus of elasticity that characterizes the stress-strain properties of these planar products as a material parameter.
  • a tissue's high tensile energy absorption index results from the outer or inner creping.
  • the former is produced by compression of the paper web adhering to a dry cylinder as a result of the action of a crepe doctor or in the latter instance as a result of a difference in speed between two wires ("fabrics"). This causes the still moist, plastically deformable paper web to be internally broken up by compression and shearing, thereby rendering it more stretchable under load than an uncreped paper.
  • Moist tissue paper webs are usually dried by the so-called Yankee drying, the through air drying (TAD) or the impulse drying method.
  • the fibers contained in the tissue paper are mainly cellulosic fibres, such as pulp fibers from chemical pulp (e.g. Kraft sulfite and sulfate pulps), mechanical pulp (e.g. ground wood), thermo mechanical pulp, chemo-mechanical pulp and/or chemo-thermo mechanical pulp (CTMP). Pulps derived from both deciduous (hardwood) and coniferous (softwood) can be used.
  • the fibers may also be or include recycled fibers, which may contain any or all of the above categories.
  • the fibers can be treated with additives - such as fillers, softeners, such as quaternary ammonium compounds and binders, such as conventional dry-strength agents or wet-strength agents used to facilitate the original paper making or to adjust the properties thereof.
  • additives such as fillers, softeners, such as quaternary ammonium compounds and binders, such as conventional dry-strength agents or wet-strength agents used to facilitate the original paper making or to adjust the properties thereof.
  • the tissue paper may also contain other types of fibers, e.g. regenerated cellulosic fibres or synthetic fibers enhancing, for instance, strength, absorption, smoothness or softness of the paper.
  • Tissue paper may be converted to the final tissue product in many ways, for example, by embossing or laminating it into a multi-ply product, rolled or folded.
  • non-woven ISO 9092, DIN EN 29092
  • non-woven a large number of extremely varied production processes are used, such as the air-laid and spun-laced techniques as well as wet-laid techniques.
  • the non- woven includes mats, non-woven fabrics and finished products made thereof.
  • Non-wovens may also be called textile-like composite materials, which represent flexible porous fabrics that are not produced by the classic methods of weaving warp and weft or by looping.
  • non-wovens are produced by intertwining, cohesive or adhesive bonding of fibres, or a combination thereof.
  • the non-woven material can be formed of natural fibres, such as cellulose or cotton fibres, but can also consist of synthetic fibres, such as Polyethylene (PE), polypropylene (PP), polyurethane (PU), polyester, nylon or regenerated cellulose, or a mix of different fibres.
  • the fibres may, for example, be present in the form of endless fibres of pre-fabricated fibres of a finite length, as synthetic fibres produced in situ, or in the form of staple fibres.
  • the nonwovens according to the invention may thus consist of mixtures of synthetic and cellulose fibrous material, e.g. natural vegetable fibres (see ISO 9092, DIN EN 29092).
  • the paper sheet of the present invention is preferably used in hygiene or wiping products.
  • non-woven ISO 9092, DIN EN 29092
  • the term non-woven is applied to a wide range of products which, in terms of their properties, are located between those of paper (cf. DIN 6730, May 1996) and cardboard (DIN 6730) on the one hand, and textiles on the other hand.
  • non-woven a large number of extremely varied production processes are used, such as the air-laid and spun-laced techniques as well as wet-laid techniques.
  • the non- woven includes mats, non-woven fabrics and finished products made thereof.
  • Non-wovens may also be called textile-like composite materials, which represent flexible porous fabrics that are not produced by the classic methods of weaving warp and weft or by looping.
  • non-wovens are produced by intertwining, cohesive or adhesive bonding of fibres, or a combination thereof.
  • the non-woven material can be formed of natural fibres, such as cellulose or cotton fibres, but can also consist of synthetic fibres, such as Polyethylene (PE), polypropylene (PP), polyurethane (PU), polyester, nylon or regenerated cellulose, or a mix of different fibres.
  • the fibres may, for example, be present in the form of endless fibres of pre-fabricated fibres of a finite length, as synthetic fibres produced in situ, or in the form of staple fibres.
  • the nonwovens according to the invention may thus consist of mixtures of synthetic and cellulose fibrous material, e.g. natural vegetable fibres (see ISO 9092, DIN EN 29092).
  • Hygiene paper sheets such as handkerchiefs, facials, kitchen towels and toilet paper having a rectangular basic shape are generally known from daily life. More particular, all known sheet products or webs of a plurality of interconnected sheets available on the market have a uniform strictly rectangular shape.
  • the paper sheet products create the optical impression of a stiff, board-type flat structure without any flexibility. Moreover, the overall appearance of the paper sheet product is uninviting.
  • the prior art suggests e.g. in handkerchiefs border embossing to improve the visual appearance and to produce plybonding.
  • This border embossing is applied in a converting machine, e. g. according to a modified nested method, where the embossing naps of the steel roll insert into the recesses between the embossing naps of the counter roll.
  • the embossing nap is run against a steel surface, which may cause considerable vibration and clear chatter marks due to the embossing frames positioned transverse to the machine direction on the embossing roll.
  • JP-A-06133894 discloses a plurality of interconnected hygiene paper sheets each sheet having a substantially rectangular basic shape with four edges, the intersection of two edges forming a corner point, at least two of said edges being wave-shaped between corner points formed by the intersection of a respective one of the at least two edges with the corresponding other edge, wherein the at least two edges oppose each other and the shape of one of the opposing edges is identical to the shape of the other one of the opposing edges.
  • DE-A-100 38 104 discloses a method for manufacturing a hygiene paper sheet or a paper web, wherein either longitudinal or transverse cuts may be formed in a curved shape.
  • JP-A-08-084685 discloses a plurality of interconnected hygiene paper sheets forming paper web, wherein the sheets are connected to each other via a perforation formed in a non-linear manner to form a gripping part so as to facilitate gripping.
  • US-A-405,412 discloses a web having a plurality of interconnected paper sheets via a perforation.
  • the perforation is formed by a plurality of openings being either triangular or circular, wherein the openings are formed so that the material is not entirely severed from the paper sheet and may be folded back against the web forming a straight edge.
  • the technical problem underlying the present invention is to provide a hygiene paper sheet having an improved appearance compared to the prior art, in particular with respect to its visual softness, as well as its visual attractiveness while still maintaining its desired properties for use, such as absorbability etc.
  • a hygiene paper sheet having a substantially rectangular basic shape with four edges, the intersection of two edges forming a corner point, first two opposing edges of said four edges being wave-shaped and second two opposing edges of said four edges being straight, the first two opposing edges being wave-shaped between corner points formed by the intersection of a respective one of the first two opposing edges with a respective one of the second two opposing edges, wherein the wave-shape of one of the first two opposing edges is complementary to the wave-shape of the other one of the first two opposing edges and that the hygiene paper sheet comprises a border embossing, the border embossing having a width different in the area of the wave- shaped edges than in the area of the straight edges.
  • the passage "having a substantially rectangular basic shape” is to be understood as to be only the basic shape of the paper sheet, but not the actual shape. That is, the edges do not have to be straight and the corners may be broken, so that the uniform rectangular basic shape is broken and only virtually present.
  • the Applicant found that if at least one edge is formed in a non-straight manner in an area defined between two corner points, the strictly rectangular shape known from the prior art products is broken open so as to improve the appearance of the paper sheet regarding its visual softness and attractiveness. In particular, as the sharp edges of the paper sheet have been removed, it looks softer and more attractive than sheets having a uniform rectangular shape. In addition, in case e. g. of the double soft embossing, the vibration and clear chatter marks can be reduced.
  • Fig. 1 shows a hygiene paper sheet 1.
  • the paper sheet 1 has a substantially rectangular basic shape indicated by the broken line.
  • the rectangular basic shape has four edges 2a-d, each two edges 2a,b;2b,c;2c,d;2d,a form a corner point 3a-d at their intersection.
  • Each two adjacent corner points 3a-d define an area A in between, as it is depicted in Fig. 1 only for corner points 3b and c (in the following reference is only made to this edge, though the other edges are equally formed).
  • the edge 2c running between two adjacent corner points 3b, c and, thus, being located in the area A is formed in a non-straight manner.
  • the corner points 3b, c are not directly connected to each other by a straight edge or line, respectively.
  • the corners conventionally formed by the connection of two edges i.e. the corners formed at the corner points by the broken line
  • all four corners are removed, that is all four edges 2a-d are chamfered before they reach the respective corner points 3a-d.
  • the angle ⁇ between the chamfer 4a-d and the respective edge 2a-d to which the chamfer is connected is preferably 135°.
  • the invention should not be limited to this angle. In fact, the angle between the chamfer 4a-d and one edge 2a-d to which the chamfer is connected and the angle between the chamfer 4a-d and the other edge 2a-d to which the chamfer is connected could also be different.
  • Fig. 2 shows another hygiene paper sheet 1. From this example may be taken that the hygiene sheet 1 does not have to be formed symmetrical.
  • one 2d of the four edges 2a-d is formed in a straight manner within the area defined between two corner points 3b and c.
  • the other three edges 2a, b, d are formed within the area defined between two adjacent corner points 3c, d; d, a; a, b in a non-straight manner. So, two opposing edges 2b, d are curved. In particular, these two edges 2b,d are wave-shaped.
  • the corners formed between the two opposing edges 2b,d and one 2a of the two other edges 2a,c are removed, namely rounded.
  • this third edge 2a is formed in a non-straight manner between two adjacent corner points 3d,a, because the edge 2a does not completely extend between the two corner points 3d,a. More particularly the part at which the edge 2a is arched (near the corner points 3d,a), it does not coincide with the visual edge of the substantially rectangular basic shape indicated by the broken line.
  • two opposing edges 2a, c are formed in a zigzag pattern, whereas the other opposing edges 2b, d are chamfered in the vicinity of fictious corner points 3a-d.
  • An embodiment of the invention is shown in Fig. 4 .
  • the hygiene paper sheet 1 has two opposed edges 2a,c formed in a wave-shape.
  • the hygiene paper sheet 1 from a web, wherein the opposed edges are crosswise to a machine direction (MD) in which the paper web runs.
  • MD machine direction
  • the paper web is cut transverse to the machine direction so that concurrently the same, but complementary cut is formed on two opposed edges of two subsequent paper sheets of the paper web.
  • the method of manufacture is described in more detail below.
  • the hygiene paper sheet of the invention is provided with a visual appearance that gives the impression of depth similar to that of soft textile material.
  • the hygiene paper sheet of the invention is border embossed. Further, the border embossing within the area between two corner points in which the edge is formed in a non-straight manner has a different width to reinforce perspective impression of depths.
  • the cut of the at least one edge in a non-straight manner may be technically realized by the so-called laser cut technology described below.
  • a similar method is also known from EP 1 305 132 .
  • the most prior art cutting devices are only suitable to produce straight line cuts.
  • Fig. 5 shows a device for cutting the edge of a paper web in a longitudinal direction, that is in parallel to the machine direction (MD) is schematically shown.
  • a paper web is running with high speed in the machine direction (MD).
  • the web is cut into a plurality of hygiene paper sheets 1.
  • a laser source 7 is located above one or both of the longitudinal edges 2a, c (with reference to Fig. 1 to 4 the edges could also be indicated 2b, d) of the paper web.
  • the laser source 7 is movable, so that the laser beam 6 moves transverse to the direction of movement of the web so as to cut the edge 2a into pattern, e.g. a wave pattern 5 as shown in Fig. 5 .
  • the longitudinal edge 2a or both longitudinal edges 2a, c of the paper web are cut into a wave shape.
  • a further method is shown. Compared to the one shown in Fig. 5 this device enables to conduct a complete cross cut through a web transverse to the machine direction. In fact, such a device enables to provide a kind of a laser curtain across the whole paper web, so as to enable a cross cut. Such a laser curtain can be achieved in different ways.
  • the laser source 7 is constituted by a plurality of single laser sources set in a row, which are controlled by one common means.
  • a further possibility would be a row of laser sources which are controlled by mirrors 8.
  • the mirrors 8could oscillate with the same frequency so that a specific area could be energized by the different laser beams. If a complete cut is to be performed, the areas of laser activation 6 overlap as shown in Fig. 7 .
  • the oscillating mirrors could be fixed mirrors disposed in a row, which need to be so close, that the perforated cut is created.
  • the mirrors are semi-transparent so as to only divert a part of the laser beam energy so that the rest of the energy could be used by the subsequent mirrors.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Sanitary Thin Papers (AREA)
  • Paper (AREA)
EP03025657.2A 2003-11-07 2003-11-07 Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets Expired - Lifetime EP1529477B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03025657.2A EP1529477B1 (en) 2003-11-07 2003-11-07 Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets
PL121242U PL67723Y1 (pl) 2003-11-07 2004-11-02 Arkusz papieru toaletowego
PL04370969A PL370969A1 (pl) 2003-11-07 2004-11-02 Arkusz papieru toaletowego, wstęga papierowa orazsposób wytwarzania wstęgi papieru toaletowego i sposób wytwarzania arkusza papieru toaletowego
CO04110417A CO5640061A2 (es) 2003-11-07 2004-11-03 Lamina de papel higienico y red de papel de una pluralidad de laminas de papel higienico interconectada

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03025657.2A EP1529477B1 (en) 2003-11-07 2003-11-07 Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets

Publications (2)

Publication Number Publication Date
EP1529477A1 EP1529477A1 (en) 2005-05-11
EP1529477B1 true EP1529477B1 (en) 2017-03-22

Family

ID=34429305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03025657.2A Expired - Lifetime EP1529477B1 (en) 2003-11-07 2003-11-07 Hygiene paper sheet and paper web of a plurality interconnected hygiene paper sheets

Country Status (3)

Country Link
EP (1) EP1529477B1 (pl)
CO (1) CO5640061A2 (pl)
PL (2) PL67723Y1 (pl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8221864B2 (en) 2009-03-27 2012-07-17 Kimberly-Clark Worldwide, Inc Toilet paper roll having angled sides
US8287977B2 (en) 2010-06-21 2012-10-16 The Procter & Gamble Company Uniquely perforated web product
US8763523B2 (en) 2010-06-21 2014-07-01 The Procter & Gamble Company Method of perforating a web material
US8468938B2 (en) 2010-06-21 2013-06-25 The Procter & Gamble Company Apparatus for perforating a web material
US8287976B2 (en) 2010-06-21 2012-10-16 The Procter & Gamble Company Uniquely perforated web product
US8763526B2 (en) 2010-06-21 2014-07-01 The Procter & Gamble Company Apparatus for perforating a web material
US8535483B2 (en) 2010-06-21 2013-09-17 The Procter & Gamble Company Apparatus for uniquely perforating a web material
US8268429B2 (en) 2010-06-21 2012-09-18 The Procter & Gamble Company Perforated web product
US9259848B2 (en) 2010-06-21 2016-02-16 The Procter & Gamble Company Method for providing a web with unique lines of weakness
US8283013B2 (en) 2010-06-21 2012-10-09 The Procter & Gamble Company Uniquely perforated web product
US8443725B2 (en) 2010-06-21 2013-05-21 The Procter & Gamble Company Method of perforating a web
US8757058B2 (en) 2010-06-21 2014-06-24 The Procter & Gamble Company Process for perforating a web

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US405412A (en) 1889-06-18 Perforated paper
JPH06133894A (ja) 1992-10-27 1994-05-17 Shigeru Ochiai 波形衛生用ロール紙及びその製造方法
JPH0884685A (ja) 1994-09-19 1996-04-02 Sohei Shiroshita 非直線型ミシン目入りトイレットペーパー
DE10038104C2 (de) 2000-08-04 2003-12-18 Sca Hygiene Prod Gmbh Vorrichtung zum Trennen und/oder Perforieren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1529477A1 (en) 2005-05-11
PL67723Y1 (pl) 2015-04-30
CO5640061A2 (es) 2006-05-31
PL121242U1 (pl) 2013-01-21
PL370969A1 (pl) 2005-05-16

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