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EP1306340A1 - Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication - Google Patents

Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication Download PDF

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Publication number
EP1306340A1
EP1306340A1 EP01850177A EP01850177A EP1306340A1 EP 1306340 A1 EP1306340 A1 EP 1306340A1 EP 01850177 A EP01850177 A EP 01850177A EP 01850177 A EP01850177 A EP 01850177A EP 1306340 A1 EP1306340 A1 EP 1306340A1
Authority
EP
European Patent Office
Prior art keywords
hollow cylindrical
cylindrical core
core
band
shaped web
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.)
Withdrawn
Application number
EP01850177A
Other languages
German (de)
English (en)
Inventor
Peter Von Paleske
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 EP01850177A priority Critical patent/EP1306340A1/fr
Priority to PCT/EP2002/010916 priority patent/WO2003035530A1/fr
Publication of EP1306340A1 publication Critical patent/EP1306340A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/26—Arrangements for preventing slipping of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
    • B26F1/0038—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes from the inside

Definitions

  • the present invention relates to a roll product consisting of a band-shaped web of material having a first end and a second end and a hollow cylindrical core 101 onto which the band-shaped web of material is wound, the hollow cylindrical core having a longitudinal direction and a radial direction, the hollow cylindrical core comprises an inner surface, an outer surface, and at least one protuberance protruding outwardly from the outer surface of the hollow cylindrical core, principally in the radial direction of the hollow cylindrical core, for mechanically and releasably engage and hold the first end of the band-shaped web of material.
  • the present invention also relates to a method for the manufacture of a roll product wherein a band-shaped web of material is wound onto a hollow cylindrical core, the band-shaped web of material comprises a first end and a second end, wherein the first end of the band-shaped web of material is advanced into contact with the hollow cylindrical core and brought into mechanical and releasable engagement with protuberances protruding outwardly from an outer surface of the hollow cylindrical core.
  • the present invention further relates to an apparatus for the manufacture of a hollow cylindrical core for mechanically and releasably engaging and holding a first end of a band-shaped web of material in an initial winding of the band-shaped web of material.
  • Roll products such as for example toilet paper and kitchen paper, are often obtained by unwinding a wound web from a parent roll and then rewinding the web onto a winding core, thus forming smaller rolls.
  • glue can be used to adhesively unite the leading end of the web with the winding core.
  • a problem with the above-mentioned method is that the glue may penetrate through the layers nearest the winding core which indirectly will adhere these layers firmly to the winding core. Accordingly, these layers are often thrown away together with the winding core.
  • WO 98/55386 discloses a winding core having an integral entangling mechanism.
  • the entangling mechanism is obtained by embossing a thick paper or thin cardboard.
  • a surface is then formed having protrusions said to have sufficient size, shape and number to grab or entangle the fibrous web.
  • glue or other adhesive the embossed paper or cardboard is laminated to the initially smooth surface of the core.
  • the embossed paper or cardboard is laminated to the core with the protrusions facing outward from the core.
  • the problem with the known winding core with entangling mechanism is that a large number of manufacturing steps are required to obtain the winding core.
  • to manufacture such a winding core requires consumption of lots of material. Accordingly, with regard to costs and environmental reasons, it is important to lower the consumption of material and the number of manufacturing steps in manufacturing of winding cores with entangling mechanism.
  • One object of the present invention is to provide a roll product comprising a hollow cylindrical core, which hollow cylindrical core substantially eliminates the problems set out above.
  • a roll product of the type indicated in the introduction is distinguished mainly by the fact that the protuberance is an integral part of the hollow cylindrical core and comprises the inner surface and the outer surface of the hollow cylindrical core.
  • integral part means that the protuberance is made from the same material as the hollow cylindrical core and originates from the hollow cylindrical core itself.
  • the protuberance consists of at least one protruding element.
  • the protuberance consists of protruding elements, which, at least partly, surround a through hole in the hollow cylindrical core.
  • protuberances are arranged uniformly on the outer side of the hollow cylindrical core.
  • protuberances are arranged irregularly on the outer surface of the hollow cylindrical core.
  • the protuberances are staggered on the outer surface of the hollow cylindrical core.
  • the protuberances may be arranged in any pattern on the surface.
  • the distance between two immediate protuberances in the longitudinal direction may range from about 10 mm to 24 mm and in the circumferential direction from about 3 mm to 33 mm.
  • the number of protuberances per m 2 may vary from 100 to 3400.
  • the hollow cylindrical core according to the invention may be made from cardboard, paperboard, synthetic material, or the like.
  • it is important that the hollow cylindrical core according to the present invention has sufficient shape stability to provide a stable support for a band-shaped web of material wound thereon.
  • Another object of the present invention is to provide an apparatus for the manufacture of the hollow cylindrical core.
  • An apparatus of the type indicated in the introduction is distinguished mainly by the fact that it comprises a mandrel with an outer, perforated cylinder, the mandrel further comprises an inner hollow cylinder with penetrating means arranged on the outer surface of the inner hollow cylinder and an expanding core having a first non-expanded state and a second expanded state wherein penetrating means protrudes out through the perforations in the outer perforated cylinder when the expanding core is in the expanded state.
  • the expanding core may be an inflatable tube, such as for example a rubber bellows, or any other expandable material or means.
  • the expanding part of the core could also be constructed on a mechanical basis like the mechanism of mandrels for lifting rolls.
  • the apparatus further comprises means for expanding the expanding core such as a hydraulic device, a pneumatic device, an electrical device, a mechanical device, or the like.
  • the penetrating means have a substantially square shape.
  • the penetrating means has a tapering pointed end.
  • the penetrating means may have any suitable shape that has the ability to penetrate the hollow cylindrical core and to create protuberances on the outer surface of the hollow cylindrical core that are able to mechanically and releasably engage and hold a first end of a band-shaped web of material in an initial winding of the web.
  • protuberances on the outer surface of the hollow cylindrical core are provided.
  • the penetrating means may be made of a material showing constancy against deformation when penetrating the hollow cylindrical core, for example, metal, ceramic, or plastic.
  • the penetrating means are arranged uniformly on the inner hollow cylinder.
  • the penetrating means are arranged irregularly on the inner hollow cylinder or in another suitable pattern.
  • the apparatus is provided with means for rotating the mandrel provided with the hollow cylindrical core and that the apparatus further comprises means for advancing the band-shaped web of material into contact with the rotating hollow cylindrical core.
  • Still another object of the present invention is to provide a method for the manufacture of the hollow cylindrical core.
  • a method of the type indicated in the introduction is distinguished mainly by the fact that the hollow cylindrical core is slid onto a perforated mandrel, wherein the mandrel comprises penetrating means for penetrating the hollow cylindrical core in a direction from the inner surface of the hollow cylindrical core, and wherein the mandrel further comprises an inner expanding core which is made to expand and at which the penetrating means are pressed against the inner surface of the hollow cylindrical core and whereby protuberances are formed protruding outwardly from the outer surface of the hollow cylindrical core, principally in the radial direction of the hollow cylindrical core.
  • the means for penetrating the hollow cylindrical core forming the protuberances are retracted before the first end of the web of material is mechanically and releasably engaged by the protuberances of the hollow cylindrical core.
  • the hollow cylindrical core can be varnished before or after the protuberances being formed.
  • suction may be applied over the hollow cylindrical core through the perforations of the outer cylinder and the openings formed by the creation of the protuberances.
  • the hollow cylindrical core may already be provided with the protuberances before being slid onto the mandrel in position for the winding step.
  • suction is to be applied over the hollow cylindrical core, it is more practical to integrate the step of forming protuberances with the winding step as it ensures accurate alignment of the perforations of the outer cylinder and the through holes in the hollow cylindrical core.
  • the hollow cylindrical core is more readily slid onto the mandrel in tight relation therewith prior to formation of protuberances.
  • the hollow cylindrical core is made of a material that is able to deform to such an extent that protuberances are formed in the casing of the hollow cylindrical core without the need to penetrate through the outer surface of the hollow cylindrical core, i.e. penetrating means will deform the casing of the hollow cylindrical core so that each protuberance, protruding principally in the radial direction of the hollow cylindrical core, is an integral part of the intact casing of the hollow cylindrical core.
  • the term "intact casing” means that the hollow cylindrical core does not show penetrating holes i.e. the hollow cylindrical core is just nearly punctured.
  • the protuberances are preferably made using heated penetrating means.
  • the penetrating means will heat a thermo-deformable material of the hollow cylindrical core to a temperature which is slightly below the melting point of the material of the hollow cylindrical core and above the softening-temperature of the material of the hollow cylindrical core.
  • the heated penetrating means In the event of the heated penetrating means are caused to melt the deformable material one or more through holes may form. However, the melted material will solidify and the protuberance formed will function as a catching mechanism in a satisfactory manner.
  • the deformable material is a synthetic material.
  • the synthetic material comprises a thermoplastic component.
  • the method for the manufacture of the hollow cylindrical core comprises a step wherein the penetrating means are heated to a temperature exceeding the softening-temperature of the irreversibly deformable material of the hollow cylindrical core but below the melting temperature of the irreversibly deformable core material.
  • the apparatus for the manufacture of the hollow cylindrical core comprises means for heating the penetrating means.
  • a hollow cylindrical core 101 is shown, having a radial direction and a longitudinal direction which is parallel to the axis of the cylinder.
  • the material of the hollow cylindrical core 101 can be, for example, cardboard, paperboard, plastic, or laminates.
  • the hollow cylindrical core 101 comprises an inner surface 102, an outer surface 103 and a plurality of spaced-apart protuberances 104, protruding outwardly from the outer surface 103 of the hollow cylindrical core 101, principally in the radial direction of the hollow cylindrical core 101.
  • the protuberances 104 are integral parts of the hollow cylindrical core 101 and comprise both the inner and the outer surface 102, 103 of the hollow cylindrical core 101.
  • the protuberances 104 are preferably spaced apart at a distance from about 3 mm to about 30 mm.
  • the protuberances 104 are arranged in a more or less regular pattern.
  • each protuberance 104 consists of four protruding elements 105. It can also be seen that the protruding elements 105 have a triangular shape with the base of the triangle nearest to the casing 106 of the hollow cylindrical core 101 and the peak of the triangle farthest away from the casing 106. This can be even more readily seen in the enlarged view of the encircled area in Fig. 1.
  • the protruding elements 105 can have any suitable shape as long as the protuberances 104 have the ability to mechanically and releasably engage and hold a first end of a band-shaped web of material in the initial winding of the web.
  • the hollow cylindrical core 101 can be made of cardboard, paperboard, synthetic material, or the like.
  • the apparatus 210 comprises a mandrel 211 with an outer, perforated hollow cylinder 212 and an inner hollow cylinder 213 with means 214 for penetrating the hollow cylindrical core 201.
  • the penetrating means 214 are arranged uniformly on the inner hollow cylinder 213.
  • an expanding core 215 having a first non-expanded state and a second expanded state. See Figs. 2a and 2b, respectively.
  • the means 214 for penetrating the hollow cylindrical core 201 protrude out through the perforations in the outer cylinder 212. See Fig. 2b and the enlarged view of the encircled area in Fig. 2b.
  • the penetrating means 214 have a tapered shape in the direction from the inner hollow cylinder 213.
  • the expanding core 215 can be a pneumatic core or be made to expand by the use of for example, electricity, hydraulics or by mechanical means.
  • the expanding core 215 shown in Fig. 2 is a rubber bellows connected to a device (not shown in Fig. 2) which is able to expand the expanding core 215.
  • apparatus 210 may comprise means for advancing the band-shaped web of material into contact with the hollow cylindrical core 201.
  • the hollow cylindrical core 101', 201' is slid onto the mandrel 211.
  • the inner expanding core 215 of the mandrel is then made to expand and at which the penetrating means 214 are pressed against the inner surface of the hollow cylindrical core 101, 201.
  • the penetrating means 214 will then puncture or nearly puncture the hollow cylindrical core 101, 201 at which protuberances 104', 204' protruding outwardly from the outer surface 103', 203' of the hollow cylindrical core 101', 201' are formed.
  • the expanding core 215 is made to expand by the use of a pneumatic device.
  • the method further comprises a step wherein the band-shaped web of material is advanced into contact with the hollow cylindrical core and brought into mechanical and releasable engagement with the protuberance. (Not shown in Figs. 2a and 2b).
  • the penetrating means After penetration of the hollow cylindrical core, but before the web is mechanically and releasably engaged by the protuberances, the penetrating means are either retracted or left to stay in the position where they protrude outwardly from the outer surface of the hollow cylindrical core, at least during the initial phase of winding the band-shaped web of material. (Not shown in Figs. 2a and 2b). The latter will give a stabilising effect to the protuberances and also prevent the hollow cylindrical core from sliding on the mandrel.
  • FIG. 3 Another embodiment of the invention can be seen in Fig. 3 wherein a hollow cylindrical core 301 is shown, having a radial direction and a longitudinal direction which is parallel to the axis of the cylinder.
  • the hollow cylindrical core 301 comprises an inner surface 302, an outer surface 303 and a plurality of spaced-apart protuberances 304, protruding outwardly from the outer surface 303 of the hollow cylindrical core 301, principally in the radial direction of the hollow cylindrical core 301.
  • the protuberances 304 are integral parts of the hollow cylindrical core 301 and comprise both the inner and the outer surface 302, 303 of the hollow cylindrical core 301.
  • the protuberances 304 are preferably spaced apart at a distance from about 3 mm to about 30 mm.
  • the protuberances 304 are arranged in a more or less regular pattern. Of course, it is possible to arrange the protuberances 304 in any suitable pattern.
  • the hollow cylindrical core 301 consists of a material that is irreversibly deformable. Synthetic materials having a thermoplastic component are suitable for this purpose.
  • an apparatus according to this embodiment further comprises means for heating the penetrating means and a method according to this embodiment further includes a step wherein the penetrating means are heated to a temperature exceeding the softening-temperature of the irreversibly deformable material of the hollow cylindrical core 301 but below the melting temperature of the irreversibly deformable material of the hollow cylindrical core 301.
  • the band-shaped web of material mentioned herein may be a non-woven material or paper product, consisting of, for example, tissue and/or tissue-like material.
  • the web of material has a high degree of absorbency.
  • the web of material may comprise one or more plies.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Making Paper Articles (AREA)
EP01850177A 2001-10-25 2001-10-25 Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication Withdrawn EP1306340A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01850177A EP1306340A1 (fr) 2001-10-25 2001-10-25 Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication
PCT/EP2002/010916 WO2003035530A1 (fr) 2001-10-25 2002-09-28 Produit en rouleau dote d'une ame, et procede et appareil de fabrication correspondants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01850177A EP1306340A1 (fr) 2001-10-25 2001-10-25 Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication

Publications (1)

Publication Number Publication Date
EP1306340A1 true EP1306340A1 (fr) 2003-05-02

Family

ID=8184892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01850177A Withdrawn EP1306340A1 (fr) 2001-10-25 2001-10-25 Rouleau comprenant un noyau, et procédé et dispositif pour sa fabrication

Country Status (2)

Country Link
EP (1) EP1306340A1 (fr)
WO (1) WO2003035530A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1588200A (en) * 1925-03-12 1926-06-08 Randomtex Dyeing Machine Corp Perforating device for cones
US1600632A (en) * 1924-12-17 1926-09-21 John P Hartsoe Cone-puncturing machine
US3643888A (en) * 1970-09-11 1972-02-22 Essex Chemical Corp Bobbin sleeve for winding of textile fibers
US3910513A (en) * 1973-10-18 1975-10-07 Owens Corning Fiberglass Corp Collection tubes for rotary collection of filamentary material
DE4446442A1 (de) * 1994-12-23 1996-06-27 Hoechst Ag Verfahren und Vorrichtung zum Perforieren von glatten, geschlossenzelligen Oberflächen offenzelliger Kunststoff-Schaumfolien
WO1998055386A1 (fr) * 1997-06-03 1998-12-10 Kimberly-Clark Worldwide, Inc. Bobine d'enroulement dotee d'un mecanisme d'entremelement integre
JPH1159994A (ja) * 1997-08-05 1999-03-02 Jimuken:Kk 薄葉フィルム巻取装置
JPH1159995A (ja) * 1997-08-05 1999-03-02 Jimuken:Kk シート巻取装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1600632A (en) * 1924-12-17 1926-09-21 John P Hartsoe Cone-puncturing machine
US1588200A (en) * 1925-03-12 1926-06-08 Randomtex Dyeing Machine Corp Perforating device for cones
US3643888A (en) * 1970-09-11 1972-02-22 Essex Chemical Corp Bobbin sleeve for winding of textile fibers
US3910513A (en) * 1973-10-18 1975-10-07 Owens Corning Fiberglass Corp Collection tubes for rotary collection of filamentary material
DE4446442A1 (de) * 1994-12-23 1996-06-27 Hoechst Ag Verfahren und Vorrichtung zum Perforieren von glatten, geschlossenzelligen Oberflächen offenzelliger Kunststoff-Schaumfolien
WO1998055386A1 (fr) * 1997-06-03 1998-12-10 Kimberly-Clark Worldwide, Inc. Bobine d'enroulement dotee d'un mecanisme d'entremelement integre
JPH1159994A (ja) * 1997-08-05 1999-03-02 Jimuken:Kk 薄葉フィルム巻取装置
JPH1159995A (ja) * 1997-08-05 1999-03-02 Jimuken:Kk シート巻取装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30) *

Also Published As

Publication number Publication date
WO2003035530A1 (fr) 2003-05-01

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