EP2252534B1 - Paper roll with central hole and reinforcing member, and method for making said roll - Google Patents

Paper roll with central hole and reinforcing member, and method for making said roll Download PDF

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Publication number
EP2252534B1
EP2252534B1 EP09716762A EP09716762A EP2252534B1 EP 2252534 B1 EP2252534 B1 EP 2252534B1 EP 09716762 A EP09716762 A EP 09716762A EP 09716762 A EP09716762 A EP 09716762A EP 2252534 B1 EP2252534 B1 EP 2252534B1
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EP
European Patent Office
Prior art keywords
roll
ring
roll according
width
turns
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
EP09716762A
Other languages
German (de)
French (fr)
Other versions
EP2252534A1 (en
Inventor
Yves Denis
René SIGWALT
Pierre Laurent
Rémy Ruppel
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 Operations France SAS
Original Assignee
Georgia Pacific France SAS
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
Priority claimed from FR0800581A external-priority patent/FR2927071B1/en
Priority claimed from FR0806423A external-priority patent/FR2938518B1/en
Application filed by Georgia Pacific France SAS filed Critical Georgia Pacific France SAS
Publication of EP2252534A1 publication Critical patent/EP2252534A1/en
Application granted granted Critical
Publication of EP2252534B1 publication Critical patent/EP2252534B1/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/28—Wound package of webs
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B65H2301/41484—Winding slitting slitting roll after winding, i.e. cutting log into individual rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/415—Unwinding
    • B65H2301/41501—Special features of unwinding process
    • B65H2301/415016—Roll material fed from inner layer

Definitions

  • the present invention relates to the field of rolls of tissue paper or other similar material such as a nonwoven. It relates in particular to the field of products for sanitary and / or domestic use such as wiping rolls, towels or toilet paper.
  • Tissue paper means a paper whose characteristics are defined by the European standard EN 12625-1 .
  • a roll is formed by winding-a continuous sheet which is composed of one or more folds of paper.
  • the sheet is optionally precut in consecutive coupons in the direction of the winding, and is wound, preferably about an axis or a pin that can support or not a mandrel; the roll can thus comprise a central mandrel or not.
  • the roll is unwound, either from its outer surface in the direction of the winding perpendicular to its axis, it is called tangential unwinding, or from the inside from the center in its axial direction. In the latter case, it is said that the roll is centrally rewind.
  • the present invention relates to rollers having a central, center-fed, and tangential-winding roll.
  • the roll When the roll is for a center-feed type application, it may include a mandrel.
  • the mandrel is a cardboard cylinder that extends over the width of the roll. It is generally formed of a cardboard strip wound helically spiral. In this case, it must first be extracted when the roller is put into service.
  • the mandrel can be designed so that it can be torn off when its edge is pulled at one end of the spiral cardboard spiral that forms it.
  • this solution is not always satisfactory, because the extraction of the mandrel is sometimes difficult if the fracture zone or areas are poorly formed.
  • it can cause the first roll sheets that become difficult to use. The first turns of the sheet being most often glued to the mandrel, they are unfit for any use and are a waste.
  • This type of mandrel is expensive to produce, since it is generally composed of two or more bonded layers of cardboard and is associated with an adhesive "hook" of the first turn of the roll. It is no longer useful once removed, and becomes a waste.
  • the sheet is cut in line in the direction of the latter or longitudinal, before winding on the spindle, from a sheet of large width, in as many strips as individual rolls to obtain.
  • the mother sheet is wound directly on a pin, also without the interposition of a mandrel.
  • the initial sheet which is large in width, is first rolled up to form a single coil with the final diameter of the individual roll, called "log" in the field. After training, the log is extracted from the spindle and cut into individual rolls.
  • the sheet whether cellulose wadding, creped dry or wet, dry paper or a nonwoven, has some elasticity. Because of the internal stresses of the roll, due for example to the clamping of the sheet on the spindle during the winding and / or the tension of the sheet that generates the unwinding / winding operation by the machine, it can not be avoided normally. reducing the diameter of the central hole by collapsing or collapsing at the center of the first turns after the pin has been removed. This collapse occurs, for example, after extraction of the spindle or at the time of cutting log, the pressure exerted by the saw or during packaging and overpacking operations.
  • the primer is a tight, helical, low-pitched torch that is not conducive to easy extraction.
  • the diameter of the central hole is larger, it is necessary to associate the first turns between them.
  • a bonding agent that is deposited directly on the sheet or indirectly via the spindle on the winding rolls, by a suitable system, at the time of winding of the first turns on the spindle. Any other principle of association of the first turns with each other, by a mechanical process in particular, is applicable. We thus consolidate these first turns which together withstand the efforts of internal constraints.
  • the Applicant has developed a mandrel-free mandrel-type roller comprising a central unwinding primer along its axis, intended to facilitate the gripping of the innermost turns of the roller.
  • This technique is described in patent applications FR 2 869 891 and EP 1 636 123 . This is a specific solution to the problem of the collapse of the central hole of rolls without mandrel.
  • the present invention provides a different and inventive solution to this same problem and applies not only to the so-called center-fed rollers, but also to the tangential unwinding rollers.
  • the present invention relates to a roll of paper, especially tissue paper, comprising a central hole along its winding axis with a cylindrical reinforcing element on which the paper is wound and characterized in that said reinforcing element comprises at least one ring integral with the innermost turn of the roll, the ring being of width less than the width of the roll and provided with a means for extracting the ring by traction substantially along the axis of the roll .
  • the ring or rings allow support of the hole from its manufacture, and until the end use, with little additional material vis-à-vis a roll without mandrel and without special reinforcement.
  • the ring comprises at least one slot allowing, from the outer edge of the ring, to fold the material constituting the ring towards the axis of the roll and thus to provide a tongue forming said extraction means.
  • the slot follows the curvature of the ring and is in particular an arc.
  • the slot is preferably perpendicular to the axis of the ring.
  • the extraction means is formed of the inwardly folded arcuate portion extending from the axial edge of the ring.
  • the slot is axial.
  • the slot extends from one edge of the ring over a portion of the width of the ring.
  • the extraction means is formed of the portion of the ring folded towards the axis of the roll.
  • the roll has two or more slots for increasing the number of gripping means forming the extraction means.
  • the ring is preferably made of cardboard, flush with or near one of the sides of the roll.
  • the ring comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer towards the axis of the roll, with a means for extracting the inner layer.
  • the ring is advantageously corrugated with a corrugated layer between two non-corrugated layers or formed of folds of different grammages including higher grammage for radially internal folds.
  • the outer layer and the inner layer are glued to each other, a part of the inner layer in contact with the outer layer not being bonded to the outer layer and forming the extraction means of the inner layer.
  • the ring comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer towards the axis of the roll, the two layers being formed of helical turns, the turns of the inner layer partly overlapping and not being bound in the overlap area.
  • the turns of the outer layer and the turns of the inner layer are wound at the same winding angle and the turns of the inner layer have a width greater than that of the turns of the outer layer of to create said overlap.
  • the turns of the outer layer are contiguous or substantially joined; they may not be perfectly joined.
  • the ring has a zone deformed by displacement towards the axis of the roller so as to form a spoiler.
  • the ring is held by gluing on at least said innermost turn of the roll.
  • the ring is held by mechanical connection on at least said innermost turn of the roll.
  • the ring has a width less than half the width of the roll, preferably less than one third of the width of the roll and more particularly less than a quarter of the width of the roll.
  • the width is preferably at least one seventh of the width.
  • This dimension reduces the cost of the material to a chuck solution over the entire width of the roll, while being sufficient to prevent collapse of the central hole.
  • At least the ring has a thickness of between 0.1 and 4 mm. Depending on the material used, the thickness of the wall of the ring is determined to ensure sufficient resistance to crushing.
  • a second ring is disposed in the central hole near the other edge. It can be maintained without sticking in the hole to the extent that it does not participate in the extraction of the sheet. It can also in the case of use with tangential unwinding forming a support bearing on an axis of the distributor on which the roller is installed.
  • the invention also relates to the use of a roll in a center-fed paper dispensing system.
  • a method of manufacturing a roll according to the invention comprises placing on a spindle rings arranged for, after transverse cutting forming two of said rings, to provide an extraction means on each of said rings, the winding of a large sheet on the spindle, the extraction of the spindle and the log section obtained across said rings so as to obtain rollers with said rings.
  • the rings are temporarily fixed in rotation and in translation on the spindle, the time to allow the winding of the sheet without sliding.
  • the rings are fixed temporarily on the spindle by mechanical means, in particular by crimping.
  • Another method of manufacture includes placing rings in the central hole in the roll after the roll has been wound.
  • the reinforcing element may comprise a first and a second ring each bonded to at least said innermost turn of the roll and each being intended to serve as a rotary support for the roll .
  • FIGS. 1 to 3 illustrate roller embodiments according to the application filed on 04/02/2008 under the registration number FR 0800581 by the plaintiff.
  • the rolled sheet is an absorbent paper for sanitary or domestic use. It is a paper obtained wet, creped or not, preferably a tissue paper. It can also be dry paper or a nonwoven.
  • the embodiment of the figure 1 illustrates a particularly suitable roll for a tangential feeding use for which the sheet is unwound from the cylindrical outer surface.
  • the roller 1 comprises a central recess (or hole) 2, cylindrical or substantially cylindrical, generally created during the formation of the turns.
  • a central recess 2 cylindrical or substantially cylindrical, generally created during the formation of the turns.
  • two rings 31, 32 are arranged in the central recess 2 in the central recess 2 in the central recess 2 in the central recess 2 arranged two rings 31, 32 each near a flat flank 4 of the roll 1 or flush with it.
  • the rings 31, 32 are put in place either simultaneously or after the formation of the roll.
  • the axis of the rolls without mandrel is in fact made of a sheet of paper wound at its center, with crumpled turns. It follows a problem of attachment to the axis of the distributor, with braking or blocking rotation.
  • the two rings 31, 32 serve as a rotational support for the fixed element (axis) around which the roller can rotate, reduce friction between these parts, thereby improving the rotation of the roller on its support and therefore the unwinding the paper on the roll 1.
  • Each of the rings 31, 32 is bonded by bonding its outer surface to the innermost turn of the roll.
  • Two lines of glue 5, 6 are provided along two circumferences of each ring.
  • the connection can also for example be made with glue points and / or lugs, protuberances which protrude from the outer surface of the ring 31, 32 and come hang on. in the first turn (s).
  • the bond may be of a chemical or mechanical nature.
  • each ring 31, 32 is here substantially the same, in order to better distribute the external forces on each ring.
  • the ring width is less than half the width of the roll, preferably less than one third or even one fifth of that of the roll. For example, it is between 10 mm and 50 mm and more preferably between 15 mm and 25 mm.
  • the thickness is between 0.1 mm and 4 mm.
  • the two rings 31, 32 are connected to the innermost turns of the roller and they serve as a support bearing on the element (s) (axes) fixed that support (s) the roller, ensuring its perfect rotation.
  • two rings 31, 32 are integrated in the recess (hole) central 2.
  • the two rings 31, 32 are not identical: one of the rings, 31, corresponds to the technical description given above in this sense it is initially totally bound to the interior of the recess 2 (for example by glue lines 5, 6).
  • the second ring 32, disposed near the second side (not referenced) of the roll 1 has a width less than that of the first ring 31; it is not fixed by gluing or other means inside the recess 2, but is simply placed or pressed or force-fitted.
  • the first ring 31 serves to prevent the collapse of the central recess 2, and to extract the innermost turns of the roll 1.
  • Proper identification may be provided to differentiate the two rings, indicating for example that an extraction must be performed at the level of the first ring 31.
  • the figure 3 illustrates another embodiment that differs from that of the figure 2 by the absence of the second ring 32.
  • the only ring provided 31 has the characteristics described above: it is fixed inside the recess 2, near one of the flanks 4 of the roll 1.
  • the single ring 31 is sufficient to prevent the collapse of the turns, and this ring can further be used to extract the innermost turns of the roll 1, even if the recess on the side opposite the ring 31 is collapsed, collapsed.
  • the mode of realization according to the figure 3 with a single ring 31, can be used for tangential unwinding in the case where only one fixed element is provided for supporting the roll 1.
  • the ring or rings 31, 32 are made of a sufficiently strong material not to collapse under the effect of the internal pressure of the roller. Directed deformation can, however, be used to facilitate extraction as is further developed. They are preferably in a recyclable material such as cardboard.
  • At least one of the rings is provided with a means assisting the extraction out of the central hole at the time of commissioning of the roll.
  • the cylindrical roller 10 is formed of the winding of a sheet about an axis and comprises a central hole 13 along this axis.
  • a ring 40 is housed in the hole near the sidewall 14 of the roll. Only one ring is visible.
  • the roll may have two.
  • the width of the ring is smaller than that of the roll. For a 100 mm wide roll, the ring preferably has a width of between 15 and 25 mm.
  • An extraction means 42 is formed of a portion of the ring delimited by a slot 41 in a circular arc, in particular parallel to the sidewall 14. The length of the arc is less than half a circumference.
  • the extraction means is released by deforming this ring portion towards the axis of the roll.
  • two extraction means 42 have been provided. To extract the ring, the fingers are slid into the hole and the two means 42 are gripped. causes the ring. If the ring is bound to the innermost sheet of the roll it is also dragged.
  • the slot may be any shape along the curved surface of the ring as it allows the portion to bend toward the center to form a finger grip.
  • the roll 10 as above comprises at least one ring 50 near the sidewall 14.
  • This ring 50 comprises at least one axial slot 51 which extends from an edge, the edge located on the side of the sidewall 14. It may also be the edge opposite the flank 14. The slot extends over a portion of the width of the ring.
  • the ring here comprises two mutually parallel slots extending to the spiral junction 53 of the edges of the cardboard web which has been spirally wound to form the tube constituting the ring. This allows to create the slots 51 from the manufacture of the tube constituting the ring.
  • the two slots form between them a tongue 52.
  • the tongue 52 is folded towards the axis of the roll to disengage it. This tab is pulled outward to extract the ring. As in the previous case if the sheet is tied to the ring, it is dragged with it.
  • the rings are temporarily fixed on the spindle preferably by mechanical means, in particular by crimping.
  • the rolls are obtained by sawing the log through the double rings.
  • a ring 40 'with slots 41 transverse arcuate. By sawing the ring 40 'between two parallel slots 41, two rings 40, one ring for each of two consecutive rolls of the log 100 are obtained.
  • figure 8 shows a ring 50 'with slots 51 parallel to the axis which give two rings 50 after sawing across the slots 51.
  • the ring 60 is made of corrugated cardboard, material in itself well known.
  • the ring thus comprises a corrugated layer 61 between an inner layer 62 and an outer layer 63.
  • the inner layer 62 constitutes the extraction means of the invention. Indeed, when the ring is in place in the central hole of the roll, the corrugated layer supports the pressure forces of the roll, leaving the inner layer 62 subjected to a relatively lower pressure. Moreover, the inner layer is disengaged from the inner surface of the roller thereby allowing it to be grasped by the fingers.
  • the figure 10 shows another ring variant that can be used in accordance with the invention.
  • the ring 70 is formed of a spiral winding, with overlapping turns 71 over a certain thickness. Of this way as in the previous case can be grasped easily the inner end 72 of the winding.
  • the ring 80 inside the central hole of the roll 10 is formed of at least two layers of cardboard.
  • the radially outer layer 81, on the side of the tissue paper, is made of cardboard or kraft paper relatively light weight, from 80 g / m 2 to 180 g / m 2 .
  • the radially inner layer or layers 82, are heavier weight, 500 g / m 2 .
  • the ring is made as a roll mandrel known per se.
  • One or more strand forming strips are helically wound around a cylindrical shape; the turns of a strand are contiguous or substantially contiguous along a helical line 80 '.
  • the high-weight web is partially glued to permit release after saw cutting of a portion of the winding tip.
  • This point 83 advantageously forms a pull tab of the ring before putting the roll into service.
  • the detachment of the radially inner layer 82 makes it possible to cause the radially outer layer 81 to yield by pressure and to release the ring completely. Upon extraction thereof, the first sheet of tissue paper adhered to the layer 81 is driven therewith.
  • the embodiment consists of a ring 90 housed in the central hole of the roll 10, on which axial markings 90F have been made, such as grooves, which at the time of cutting by the saw cause the deformation of the ring 90 under the pressure of the latter.
  • These grooves are parallel to the axis of the roll and preferably formed on the outer face of the ring.
  • the number of grooves is sufficient, especially six, so that the saw always supports near a marking line regardless of the angular position of the ring.
  • the ring thus deformed has a tip or a spoiler 91 with an edge formed of the marking 90F constituting an easy grip for extraction.
  • the ring 90 is advantageously formed like the previous ones of a single or multiple band wound in a spiral.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Sanitary Thin Papers (AREA)
  • Winding Of Webs (AREA)
  • Making Paper Articles (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

A roll of sheet product, in particular of tissue paper, with a central hole along its winding axis includes a cylindrical reinforcing element onto which the paper is wound. The reinforcing element includes at least one ring joined to the innermost turn of the roll, with a width less than the width of the roll and provided with a means of extracting the ring by pulling substantially along the axis of the roll.

Description

La présente invention concerne le domaine des rouleaux de papier tissue ou autre matériau semblable tel qu'un non-tissé. Elle concerne en particulier le domaine des produits à usage sanitaire et/ou domestique comme par exemple les rouleaux d'essuyage, d'essuie-mains ou le papier hygiénique.The present invention relates to the field of rolls of tissue paper or other similar material such as a nonwoven. It relates in particular to the field of products for sanitary and / or domestic use such as wiping rolls, towels or toilet paper.

Par " papier tissue " il faut comprendre un papier dont les caractéristiques sont définies par la norme européenne EN 12625-1 . Un rouleau est formé par l'enroulement -d'une feuille continue qui est composée d'un ou plusieurs plis de papier. La feuille est éventuellement prédécoupée en coupons consécutifs dans la direction du bobinage, et est enroulée, préférentiellement, autour d'un axe ou une broche qui peut supporter ou non un mandrin ; le rouleau peut ainsi comprendre un mandrin central ou non."Tissue paper" means a paper whose characteristics are defined by the European standard EN 12625-1 . A roll is formed by winding-a continuous sheet which is composed of one or more folds of paper. The sheet is optionally precut in consecutive coupons in the direction of the winding, and is wound, preferably about an axis or a pin that can support or not a mandrel; the roll can thus comprise a central mandrel or not.

Selon les applications, le rouleau est dévidé, soit à partir de sa surface externe dans la direction du bobinage perpendiculairement à son axe, on parle de dévidage tangentiel, soit par l'intérieur à partir du centre dans sa direction axiale. Dans ce dernier cas, on dit que le rouleau est à dévidage central.Depending on the application, the roll is unwound, either from its outer surface in the direction of the winding perpendicular to its axis, it is called tangential unwinding, or from the inside from the center in its axial direction. In the latter case, it is said that the roll is centrally rewind.

La présente invention concerne les rouleaux, présentant un trou central, à dévidage central, ainsi que les rouleaux à dévidage tangentiel.The present invention relates to rollers having a central, center-fed, and tangential-winding roll.

Quand le rouleau est destiné à une application de type à dévidage central, il peut comporter un mandrin. Le mandrin est un cylindre de carton qui s'étend sur la largeur du rouleau. Il est généralement formé d'une bande de carton enroulée en spirale hélicoïdale. Dans ce cas, on doit commencer par extraire celui-ci à la mise en service du rouleau. Par exemple, le mandrin peut être conçu de manière à pouvoir être déchiré lorsqu'on tire sur son bord à l'une des extrémités de la spirale hélicoïdale en carton qui le forme. Cependant, la pratique montre que cette solution n'est pas toujours satisfaisante, car l'extraction du mandrin se révèle être parfois difficile si la ou les zones de rupture sont mal formées. De plus, on peut entraîner les premières feuilles du rouleau qui deviennent difficilement utilisables. Les premières spires de la feuille étant le plus souvent collées au mandrin, elles sont impropres à toute utilisation et sont un déchet.When the roll is for a center-feed type application, it may include a mandrel. The mandrel is a cardboard cylinder that extends over the width of the roll. It is generally formed of a cardboard strip wound helically spiral. In this case, it must first be extracted when the roller is put into service. For example, the mandrel can be designed so that it can be torn off when its edge is pulled at one end of the spiral cardboard spiral that forms it. However, practice shows that this solution is not always satisfactory, because the extraction of the mandrel is sometimes difficult if the fracture zone or areas are poorly formed. In addition, it can cause the first roll sheets that become difficult to use. The first turns of the sheet being most often glued to the mandrel, they are unfit for any use and are a waste.

Ce type de mandrin est coûteux à réaliser, puisqu'il est généralement composé de deux ou plusieurs couches de carton liées par collage et qu'il est associé à une colle " d'accrochage " de la première spire du rouleau. Il n'est de plus d'aucune utilité une fois retiré, et devient donc un déchet.This type of mandrel is expensive to produce, since it is generally composed of two or more bonded layers of cardboard and is associated with an adhesive "hook" of the first turn of the roll. It is no longer useful once removed, and becomes a waste.

Pour pallier cet inconvénient, on propose aussi, selon l'art antérieur, des rouleaux à dévidage central sans mandrin. Ceux-ci sont a priori de mise en oeuvre plus aisée par l'utilisateur, car il n'est plus nécessaire d'enlever un mandrin préalablement à leur mise en service. Pour réaliser ceux-ci, on peut, en fabrication, prévoir un mandrin provisoire formant une broche sur laquelle on enroule la feuille. On retire ensuite la broche, avant le conditionnement des rouleaux. Cette technique présente des contraintes sur le plan industriel car il faut ajouter un poste d'extraction des broches à la ligne de bobinage.To overcome this disadvantage, it is also proposed, according to the prior art, central unwind rolls without mandrel. These are a priori easier to implement by the user, because it is no longer necessary to remove a mandrel prior to their commissioning. To achieve these, one can, in manufacture, provide a temporary mandrel forming a pin on which the sheet is wound. The spindle is then removed before the rolls are packed. This technique presents constraints on the industrial level because it is necessary to add a pin extraction station to the winding line.

Selon un mode de fabrication sans mandrin connu, la feuille est découpée en ligne dans le sens marche de cette dernière ou longitudinal, avant bobinage sur la broche, à partir d'une feuille mère de grande largeur, en autant de bandes que de rouleaux individuels à obtenir.According to a method of manufacture without known chuck, the sheet is cut in line in the direction of the latter or longitudinal, before winding on the spindle, from a sheet of large width, in as many strips as individual rolls to obtain.

Selon un autre mode de fabrication, on enroule directement la feuille mère sur une broche, également sans interposition de mandrin. La feuille initiale qui est de grande largeur, est d'abord enroulée de manière à former une bobine unique au diamètre définitif du rouleau individuel, appelé " log " dans le domaine. Après formation, on extrait le log de la broche et on le tronçonne en rouleaux individuels.According to another method of manufacture, the mother sheet is wound directly on a pin, also without the interposition of a mandrel. The initial sheet, which is large in width, is first rolled up to form a single coil with the final diameter of the individual roll, called "log" in the field. After training, the log is extracted from the spindle and cut into individual rolls.

Cependant, la feuille, que ce soit de l'ouate de cellulose, crêpée sec ou humide, du papier voie sèche ou un non-tissé, présente une certaine élasticité. En raison des contraintes internes du rouleau, dues par exemple au serrage de la feuille sur la broche pendant le bobinage et/ou à la tension de la feuille que génère l'opération de déroulement/enroulement par la machine, on ne peut éviter normalement la réduction du diamètre du trou central par l'affaissement ou l'effondrement au centre des premières spires après que l'on a retiré la broche. Cet effondrement se produit, par exemple, après extraction de la broche ou au moment de la coupe du log, par la pression exercée par la scie ou encore lors des opérations d'emballage et de suremballage.However, the sheet, whether cellulose wadding, creped dry or wet, dry paper or a nonwoven, has some elasticity. Because of the internal stresses of the roll, due for example to the clamping of the sheet on the spindle during the winding and / or the tension of the sheet that generates the unwinding / winding operation by the machine, it can not be avoided normally. reducing the diameter of the central hole by collapsing or collapsing at the center of the first turns after the pin has been removed. This collapse occurs, for example, after extraction of the spindle or at the time of cutting log, the pressure exerted by the saw or during packaging and overpacking operations.

On constate une réduction partielle ou totale du trou central au cours des manutentions et du transport, en raison des vibrations et des pressions inévitables auxquelles les rouleaux sont soumis.There is a partial or total reduction of the central hole during handling and transport, due to vibrations and inevitable pressures to which the rollers are subjected.

Lorsque le trou central est complètement réduit, il est difficile de le reformer au moins à la main, et la préhension de la première spire n'est pas aisée. Il s'ensuit inévitablement des déchets, notamment à la mise en service du rouleau dans un distributeur, car on est amené alors à saisir plusieurs spires à la fois.When the central hole is completely reduced, it is difficult to reform at least by hand, and the grip of the first turn is not easy. It inevitably follows waste, especially the commissioning of the roller in a dispenser, because it is then necessary to grasp several turns at a time.

On sait réaliser des rouleaux sans mandrin dont le trou central reste formé après extraction de la broche et/ou après coupe par une scie. On peut utiliser par exemple une broche dont le profil, cannelé ou à section polygonale, permet la formation d'un trou central dont les parois sont autoportantes. Un exemple de réalisation est illustré par le brevet FR 2 554 799 .It is known to produce mandrelless rollers whose central hole remains formed after extraction of the spindle and / or after cutting by a saw. We can use for example a spindle whose profile, grooved or polygonal section, allows the formation of a central hole whose walls are self-supporting. An exemplary embodiment is illustrated by the patent FR 2,554,799 .

Si le trou central est de faible diamètre les premières spires restent difficiles d'accès. L'amorce se présente en une torche serrée, hélicoïdale à faible pas, peu propice à une extraction aisée.If the central hole is small diameter the first turns remain difficult to access. The primer is a tight, helical, low-pitched torch that is not conducive to easy extraction.

Si le diamètre du trou central est plus important, on est amené à associer les premières spires entre elles. Pour cela, on applique un agent de liaison que l'on dépose directement sur la feuille ou indirectement via la broche sur les cylindres de bobinage, par un système adapté, au moment de l'enroulement des premières spires sur la broche. Tout autre principe d'association des premières spires entre elles, par un procédé mécanique notamment, est applicable. On consolide ainsi ces premières spires qui ensemble résistent aux efforts des contraintes internes.If the diameter of the central hole is larger, it is necessary to associate the first turns between them. For this, we apply a bonding agent that is deposited directly on the sheet or indirectly via the spindle on the winding rolls, by a suitable system, at the time of winding of the first turns on the spindle. Any other principle of association of the first turns with each other, by a mechanical process in particular, is applicable. We thus consolidate these first turns which together withstand the efforts of internal constraints.

Cependant, là encore, on ne peut éviter les déchets lors de la mise en service d'un tel rouleau. Que ce soit dans le cas d'une utilisation directe ou dans le cas où l'on utiliserait ce rouleau dans un distributeur à dévidage central dans lequel on doit introduire l'extrémité de la feuille dans un orifice de distribution relativement étroit, on est obligé d'éliminer au préalable les premières spires associées entre elles.However, again, the waste can not be avoided during the commissioning of such a roll. Whether in the case of a direct use or in the case where one would use this roll in a central dispenser in which we must introduce the end of the sheet into a relatively narrow dispensing orifice, we are obliged to eliminate beforehand the first coils associated with each other.

Dans ce dernier type de réalisation, on ne peut éviter pour certains rouleaux l'affaissement du trou central, comme dans les cas mentionnés plus haut, en raison des chocs lors du transport. Pour éviter ce risque, on prévoit d'ailleurs de conditionner préférentiellement les rouleaux dans des caisses en carton, contrairement aux rouleaux avec mandrin qui se suffisent d'une enveloppe souple en papier ou en matière plastique. Le coût s'en trouve augmenté.In this latter embodiment, it is not possible for certain rollers to avoid sagging of the central hole, as in the cases mentioned above, because of shocks during transport. To avoid this risk, it is also expected to preferentially condition the rolls in cardboard boxes, unlike rollers with mandrel that are sufficient of a flexible envelope of paper or plastic. The cost is increased.

L'intérêt que l'on pouvait trouver à ces rouleaux sans mandrin par rapport aux rouleaux avec mandrin en est ainsi diminué.The interest that could be found in these mandrel-free rolls with respect to the mandrel rollers is thus diminished.

Dans la demande de brevet DE 19946272 A1 , il est décrit un rouleau de papier tissue pour lequel le mandrin est remplacé par une ou plusieurs bague dont la longueur totale est inférieure à la longueur du rouleau.In the patent application DE 19946272 A1 , there is described a roll of tissue paper for which the mandrel is replaced by one or more rings whose total length is less than the length of the roll.

La demanderesse a développé un rouleau sans mandrin dit à dévidage central comprenant une amorce de dévidage central selon son axe, destinée à faciliter la préhension des spires les plus internes du rouleau. Cette technique est décrite dans les demandes de brevet FR 2 869 891 et EP 1 636 123 . Il s'agit d'une solution spécifique au problème de l'effondrement du trou central des rouleaux sans mandrin.The Applicant has developed a mandrel-free mandrel-type roller comprising a central unwinding primer along its axis, intended to facilitate the gripping of the innermost turns of the roller. This technique is described in patent applications FR 2 869 891 and EP 1 636 123 . This is a specific solution to the problem of the collapse of the central hole of rolls without mandrel.

La présente invention apporte une solution différente et inventive à ce même problème et s'applique non seulement aux rouleaux dits à dévidage central, mais également aux rouleaux à dévidage tangentiel.The present invention provides a different and inventive solution to this same problem and applies not only to the so-called center-fed rollers, but also to the tangential unwinding rollers.

Ainsi, la présente invention concerne un rouleau de papier, notamment de papier tissue, comprenant un trou central le long de son axe de bobinage avec un élément de renfort cylindrique sur lequel le papier est enroulé et caractérisé par le fait que ledit élément de renfort comprend au moins un anneau solidaire de la spire la plus interne du rouleau, l'anneau étant de largueur inférieure à la largueur du rouleau et pourvu d'un moyen d'extraction de l'anneau par traction sensiblement le long de l'axe du rouleau.Thus, the present invention relates to a roll of paper, especially tissue paper, comprising a central hole along its winding axis with a cylindrical reinforcing element on which the paper is wound and characterized in that said reinforcing element comprises at least one ring integral with the innermost turn of the roll, the ring being of width less than the width of the roll and provided with a means for extracting the ring by traction substantially along the axis of the roll .

Grâce à l'invention, le ou lesdits anneaux permettent un soutien du trou dès sa fabrication, et jusqu'à l'utilisation finale, avec peu de matière supplémentaire vis-à-vis d'un rouleau sans mandrin et sans renfort particulier.Thanks to the invention, the ring or rings allow support of the hole from its manufacture, and until the end use, with little additional material vis-à-vis a roll without mandrel and without special reinforcement.

Selon un mode de réalisation l'anneau comporte au moins une fente permettant, depuis le bord extérieur de l'anneau, de plier le matériau constituant l'anneau vers l'axe du rouleau et ménager ainsi une languette formant le dit moyen d'extraction.According to one embodiment, the ring comprises at least one slot allowing, from the outer edge of the ring, to fold the material constituting the ring towards the axis of the roll and thus to provide a tongue forming said extraction means. .

Plus particulièrement la fente suit la courbure de l'anneau et est notamment en arc de cercle. La fente est de préférence perpendiculaire à l'axe de l'anneau. Le moyen d'extraction est formé de la portion en arc de cercle rabattue vers l'intérieur qui s'étend depuis le bord axial de l'anneau.More particularly, the slot follows the curvature of the ring and is in particular an arc. The slot is preferably perpendicular to the axis of the ring. The extraction means is formed of the inwardly folded arcuate portion extending from the axial edge of the ring.

Selon une variante la fente est axiale. De préférence la fente s'étend depuis un bord de l'anneau sur une partie de la largeur de l'anneau. Le moyen d'extraction est formé de la partie de l'anneau rabattue vers l'axe du rouleau.According to one variant, the slot is axial. Preferably the slot extends from one edge of the ring over a portion of the width of the ring. The extraction means is formed of the portion of the ring folded towards the axis of the roll.

Avantageusement le rouleau comporte deux fentes ou plus permettant d'augmenter le nombre de moyens de préhension formant le moyen d'extraction.Advantageously, the roll has two or more slots for increasing the number of gripping means forming the extraction means.

L'anneau est de préférence en carton, affleurant l'un de flancs du rouleau ou à proximité de celui-ci.The ring is preferably made of cardboard, flush with or near one of the sides of the roll.

Conformément à une autre variante, l'anneau comprend au moins deux couches avec une couche externe au contact de la feuille de papier et une couche interne vers l'axe du rouleau, avec un moyen d'extraction de la couche interne. Ce mode de réalisation permet d'amorcer plus aisément l'extraction de l'anneau lorsque la feuille est serrée sur l'anneau et exerce une pression importante, la couche interne étant soumise à une pression moindre que la couche directement au contact de la feuille.According to another variant, the ring comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer towards the axis of the roll, with a means for extracting the inner layer. This embodiment makes it easier to initiate the extraction of the ring when the sheet is tightened on the ring and exerts a significant pressure, the inner layer being subjected to less pressure than the layer directly in contact with the sheet. .

Selon un mode de réalisation de cette variante, l'anneau est avantageusement en carton ondulé avec une couche ondulée entre deux couches non ondulées ou bien formé de plis de grammages différents notamment de grammage plus élevé pour les plis radialement internes.According to one embodiment of this variant, the ring is advantageously corrugated with a corrugated layer between two non-corrugated layers or formed of folds of different grammages including higher grammage for radially internal folds.

Selon un autre mode de réalisation de cette variante, la couche externe et la couche interne sont collées l'une à l'autre, une partie de la couche interne au contact de la couche externe n'étant pas collée à la couche externe et formant le moyen d'extraction de la couche interne.According to another embodiment of this variant, the outer layer and the inner layer are glued to each other, a part of the inner layer in contact with the outer layer not being bonded to the outer layer and forming the extraction means of the inner layer.

Plus particulièrement l'anneau comprend au moins deux couches avec une couche externe au contact de la feuille de papier et une couche interne vers l'axe du rouleau les deux couches étant formées de spires hélicoïdales, les spires de la couche interne se chevauchant partiellement et n'étant pas liées dans la zone de chevauchement. Selon un mode de réalisation préféré, les spires de la couche externe et les spires de la couche interne sont enroulées selon un même angle d'enroulement et les spires de la couche interne ont une largeur supérieure à celle des spires de la couche externe de manière à créer ledit chevauchement. Notamment, les spires de la couche externe sont jointives ou sensiblement jointives ; elles peuvent ne pas être parfaitement jointives.More particularly, the ring comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer towards the axis of the roll, the two layers being formed of helical turns, the turns of the inner layer partly overlapping and not being bound in the overlap area. According to a preferred embodiment, the turns of the outer layer and the turns of the inner layer are wound at the same winding angle and the turns of the inner layer have a width greater than that of the turns of the outer layer of to create said overlap. In particular, the turns of the outer layer are contiguous or substantially joined; they may not be perfectly joined.

Conformément à un autre variante, l'anneau présente une zone déformée par déplacement vers l'axe du rouleau de manière à former un becquet.According to another variant, the ring has a zone deformed by displacement towards the axis of the roller so as to form a spoiler.

Conformément à une autre caractéristique, l'anneau est maintenu par collage sur au moins ladite spire la plus interne du rouleau.According to another characteristic, the ring is held by gluing on at least said innermost turn of the roll.

Conformément à une variante, l'anneau est maintenu par liaison mécanique sur au moins ladite spire la plus interne du rouleau.According to a variant, the ring is held by mechanical connection on at least said innermost turn of the roll.

Conformément à une autre caractéristique, l'anneau présente une largeur inférieure à la moitié de la largeur du rouleau, de préférence inférieure au tiers de la largeur du rouleau et plus particulièrement inférieure au quart de la largeur du rouleau. La largeur est de préférence au moins égale à un septième de la largeur.According to another characteristic, the ring has a width less than half the width of the roll, preferably less than one third of the width of the roll and more particularly less than a quarter of the width of the roll. The width is preferably at least one seventh of the width.

Cette dimension réduit le coût de la matière vis-à-vis d'une solution avec mandrin sur toute la largeur du rouleau, tout en étant suffisante pour empêcher l'effondrement du trou central.This dimension reduces the cost of the material to a chuck solution over the entire width of the roll, while being sufficient to prevent collapse of the central hole.

Avantageusement, au moins l'anneau présente une épaisseur comprise entre 0,1 et 4 mm. En fonction du matériau utilisé, on détermine l'épaisseur de la paroi de l'anneau pour assurer une résistance suffisante à l'écrasement.Advantageously, at least the ring has a thickness of between 0.1 and 4 mm. Depending on the material used, the thickness of the wall of the ring is determined to ensure sufficient resistance to crushing.

Lorsque cela est nécessaire pour maintenir le trou un deuxième anneau est disposé dans le trou central à proximité de l'autre bord. Il peut être maintenu sans collage dans le trou dans la mesure où il ne participe pas à l'extraction de la feuille. Il peut en outre dans le cas d'une utilisation avec dévidage tangentiel former un palier support sur un axe du distributeur sur lequel le rouleau est installé.When necessary to maintain the hole a second ring is disposed in the central hole near the other edge. It can be maintained without sticking in the hole to the extent that it does not participate in the extraction of the sheet. It can also in the case of use with tangential unwinding forming a support bearing on an axis of the distributor on which the roller is installed.

L'invention porte également sur l'utilisation d'un rouleau dans un système de distribution de papier à dévidage central.The invention also relates to the use of a roll in a center-fed paper dispensing system.

Un procédé de fabrication d'un rouleau selon l'invention comprend la mise en place sur une broche de bagues agencées pour, après découpe transversale formant deux desdits anneaux, ménager un moyen d'extraction sur chacun desdits anneaux, l'enroulement d'une large feuille sur la broche, l'extraction de la broche et la coupe du log obtenu en travers des desdites bagues de manière à obtenir des rouleaux avec lesdits anneaux. Le cas échéant, on fixe temporairement en rotation et en translation les bagues sur la broche, le temps de permettre l'enroulement de la feuille sans glissement. De préférence on fixe temporairement les bagues sur la broche par un moyen mécanique, notamment par sertissage. Un autre procédé de fabrication comprend la mise en place de ou des anneaux dans le trou central aménagé dans le rouleau après que celui-ci a été enroulé.A method of manufacturing a roll according to the invention comprises placing on a spindle rings arranged for, after transverse cutting forming two of said rings, to provide an extraction means on each of said rings, the winding of a large sheet on the spindle, the extraction of the spindle and the log section obtained across said rings so as to obtain rollers with said rings. If necessary, the rings are temporarily fixed in rotation and in translation on the spindle, the time to allow the winding of the sheet without sliding. Preferably the rings are fixed temporarily on the spindle by mechanical means, in particular by crimping. Another method of manufacture includes placing rings in the central hole in the roll after the roll has been wound.

Si l'on considère un mode de réalisation avec dévidage tangentiel, l'élément de renfort peut comprendre un premier et un deuxième anneau chacun collé à au moins ladite spire la plus interne du rouleau et chacun étant destiné à servir de support rotatif pour le rouleau.If we consider an embodiment with tangential unwinding, the reinforcing element may comprise a first and a second ring each bonded to at least said innermost turn of the roll and each being intended to serve as a rotary support for the roll .

D'autres caractéristiques, détails et avantages de l'invention ressortiront de la description qui va suivre, faite à titre illustratif et nullement limitatif en référence aux dessins annexés sur lesquels :

  • La figure 1 est une vue schématique en perspective d'un rouleau avec deux anneaux pour une utilisation avec dévidage tangentiel;
  • La figure 2 est une vue schématique en perspective d'un rouleau avec deux anneaux pour un dévidage central ;
  • La figure 3 est une autre vue schématique en perspective d'un rouleau avec un seul anneau.
  • La figure 4 représente deux rouleaux avec un moyen d'extraction conforme à l'invention, l'un en position avant mise en service l'autre avec le moyen d'extraction dégagé ;
  • La figure 5 représente un autre mode de réalisation de l'invention avec un anneau dans lequel on dégage des languettes ;
  • La figure 6 montre schématiquement une étape de fabrication des rouleaux avec formation d'un log et son sciage en rouleaux individuels
  • La figure 7 montre un anneau double formant une bague du mode de réalisation de la figure 4 ;
  • La figure 8 montre un anneau double formant une bague du mode de réalisation de la figure 5 ;
  • La figure 9 montre une variante de réalisation de l'invention avec un anneau formé de carton ondulé ;
  • La figure 10 montre une autre variante de réalisation de l'invention avec un anneau formé d'une bande en spirale ;
  • La figure 11 montre une variante de réalisation avec un anneau multiplis ;
  • La figure 12 montre une autre variante avec un anneau formant un becquet ;
  • La figure 13 montre une autre variante de réalisation de l'anneau par enroulement en hélice de deux bandes.
Other features, details and advantages of the invention will emerge from the following description, given by way of illustration and in no way limitative, with reference to the appended drawings in which:
  • The figure 1 is a schematic perspective view of a roll with two rings for use with tangential unwinding;
  • The figure 2 is a schematic perspective view of a roller with two rings for central unwinding;
  • The figure 3 is another schematic perspective view of a roll with a single ring.
  • The figure 4 represents two rollers with extraction means according to the invention, one in position before commissioning the other with the extraction means disengaged;
  • The figure 5 represents another embodiment of the invention with a ring in which tabs are disengaged;
  • The figure 6 shows schematically a stage of manufacture of the rollers with formation of a log and its sawing in individual rolls
  • The figure 7 shows a double ring forming a ring of the embodiment of the figure 4 ;
  • The figure 8 shows a double ring forming a ring of the embodiment of the figure 5 ;
  • The figure 9 shows an alternative embodiment of the invention with a ring formed of corrugated cardboard;
  • The figure 10 shows another alternative embodiment of the invention with a ring formed of a spiral band;
  • The figure 11 shows an alternative embodiment with a multiplied ring;
  • The figure 12 shows another variant with a ring forming a spoiler;
  • The figure 13 shows another embodiment of the ring by helically winding two strips.

Les figures 1 à 3 illustrent des modes de réalisation de rouleau selon la demande déposée le 04/02/2008 sous le numéro d'enregistrement FR 0800581 par la demanderesse.The Figures 1 to 3 illustrate roller embodiments according to the application filed on 04/02/2008 under the registration number FR 0800581 by the plaintiff.

La feuille mise en rouleau est un papier absorbant à usage sanitaire ou domestique. Il s'agit d'un papier obtenu par voie humide, crêpé ou non, de préférence un papier tissue. Il peut s'agir aussi de papier voie sèche ou encore d'un nontissé. Le mode de réalisation de la figure 1 illustre un rouleau particulièrement destiné à un usage à dévidage tangentiel pour lesquels la feuille est dévidée à partir de la surface externe cylindrique.The rolled sheet is an absorbent paper for sanitary or domestic use. It is a paper obtained wet, creped or not, preferably a tissue paper. It can also be dry paper or a nonwoven. The embodiment of the figure 1 illustrates a particularly suitable roll for a tangential feeding use for which the sheet is unwound from the cylindrical outer surface.

Le rouleau 1 comprend un évidement (ou trou) central 2, cylindrique ou sensiblement cylindrique, généralement créé lors de la formation des spires. Dans l'évidemment central 2 sont disposés deux anneaux 31, 32 chacun près d'un flanc plat 4 du rouleau 1 ou affleurant celui-ci. Les anneaux 31, 32 sont mis en place soit simultanément, soit après la formation du rouleau.The roller 1 comprises a central recess (or hole) 2, cylindrical or substantially cylindrical, generally created during the formation of the turns. In the central recess 2 are arranged two rings 31, 32 each near a flat flank 4 of the roll 1 or flush with it. The rings 31, 32 are put in place either simultaneously or after the formation of the roll.

Dans les réalisations connues, l'axe des rouleaux sans mandrin est en fait constitué d'une feuille de papier enroulée en son centre, avec des spires froissées. Il s'ensuit un problème d'accrochage sur l'axe du distributeur, avec freinage voire blocage de la rotation.In known embodiments, the axis of the rolls without mandrel is in fact made of a sheet of paper wound at its center, with crumpled turns. It follows a problem of attachment to the axis of the distributor, with braking or blocking rotation.

Selon ce mode de réalisation les deux anneaux 31, 32 servent de support en rotation pour l'élément fixe (axe) autour duquel le rouleau peut tourner, diminuer les frottements entre ces pièces, améliorant ainsi la rotation du rouleau sur son support et donc le dévidage du papier sur le rouleau 1. Chacun des anneaux 31, 32 est lié par collage de sa surface externe à la spire la plus interne du rouleau. Deux lignes de colle 5, 6 sont prévues selon deux circonférences de chaque anneau. La liaison peut aussi par exemple être réalisée avec des points de colle et/ou des ergots, protubérances qui dépassent de la surface extérieure de l'anneau 31, 32 et viennent s'accrocher dans la ou les premières spires. La liaison peut être de nature chimique ou mécanique.According to this embodiment the two rings 31, 32 serve as a rotational support for the fixed element (axis) around which the roller can rotate, reduce friction between these parts, thereby improving the rotation of the roller on its support and therefore the unwinding the paper on the roll 1. Each of the rings 31, 32 is bonded by bonding its outer surface to the innermost turn of the roll. Two lines of glue 5, 6 are provided along two circumferences of each ring. The connection can also for example be made with glue points and / or lugs, protuberances which protrude from the outer surface of the ring 31, 32 and come hang on. in the first turn (s). The bond may be of a chemical or mechanical nature.

La largeur de chaque anneau 31, 32 est ici sensiblement la même, afin de mieux répartir les efforts extérieurs sur chaque anneau. La largeur d'anneau est inférieure à la moitié de la largeur du rouleau, préférentiellement inférieure au tiers ou même au cinquième de celle du rouleau. Par exemple, elle est comprise entre 10 mm et 50 mm et plus préférentiellement entre 15 mm et 25 mm.The width of each ring 31, 32 is here substantially the same, in order to better distribute the external forces on each ring. The ring width is less than half the width of the roll, preferably less than one third or even one fifth of that of the roll. For example, it is between 10 mm and 50 mm and more preferably between 15 mm and 25 mm.

Par ailleurs en fonction de la nature du matériau de l'anneau, son épaisseur est comprise entre 0,1 mm et 4 mm.Moreover, depending on the nature of the material of the ring, its thickness is between 0.1 mm and 4 mm.

Les deux anneaux 31, 32 sont liés aux spires les plus internes du rouleau et ils servent de palier-support sur le ou les élément(s) (axes) fixes qui supporte(nt) le rouleau, en assurant sa parfaite rotation.The two rings 31, 32 are connected to the innermost turns of the roller and they serve as a support bearing on the element (s) (axes) fixed that support (s) the roller, ensuring its perfect rotation.

Selon la figure 2, deux anneaux 31, 32 sont intégrés dans l'évidement (trou) central 2. Ici les deux anneaux 31, 32 ne sont pas identiques : l'un des anneaux, 31, correspond à la description technique donnée ci-dessus en ce sens qu'il est initialement totalement lié à l'intérieur de l'évidement 2 (par exemple par des lignes de colle 5, 6). Le second anneau 32, disposé près du deuxième flanc (non référencé) du rouleau 1 présente une largeur inférieure à celle du premier anneau 31 ; il n'est pas fixé par collage ou autre moyen à l'intérieur de l'évidement 2, mais y est simplement placé ou enfoncé ou emboîté en force. Ici le premier anneau 31 sert à empêcher l'effondrement de l'évidemment central 2, et à extraire les spires les plus internes du rouleau 1.According to figure 2 , two rings 31, 32 are integrated in the recess (hole) central 2. Here the two rings 31, 32 are not identical: one of the rings, 31, corresponds to the technical description given above in this sense it is initially totally bound to the interior of the recess 2 (for example by glue lines 5, 6). The second ring 32, disposed near the second side (not referenced) of the roll 1 has a width less than that of the first ring 31; it is not fixed by gluing or other means inside the recess 2, but is simply placed or pressed or force-fitted. Here the first ring 31 serves to prevent the collapse of the central recess 2, and to extract the innermost turns of the roll 1.

L'utilisateur saisit l'anneau 32 (non lié aux premières spires), le tire axialement vers l'extérieur du rouleau, Cet anneau 32 a une fonction anti-effondrement de l'évidement 2, soit lors de la fabrication du rouleau soit lors de son utilisation Ensuite l'utilisateur saisit l'anneau 31 et tire axialement vers l'extérieur du rouleau amorçant ainsi les premières spires et le dévidage central du rouleau 1.,The user grasps the ring 32 (not linked to the first turns), pulls it axially towards the outside of the roll, This ring 32 has an anti-collapse function of the recess 2, either during the manufacture of the roll or during from its use Then the user grasps the ring 31 and pulls axially outwardly of the roll thus initiating the first turns and the central unwinding of the roll 1.,

Un repérage adéquat (visuel ou autre) peut être prévu afin de différencier les deux anneaux, indiquant par exemple qu'une extraction doit être effectuée au niveau du premier anneau 31.Proper identification (visual or otherwise) may be provided to differentiate the two rings, indicating for example that an extraction must be performed at the level of the first ring 31.

La figure 3 illustre un autre mode de réalisation qui se différencie de celui de la figure 2 par l'absence du deuxième anneau 32. Le seul anneau prévu 31 présente les caractéristiques décrites ci avant : il est fixé à l'intérieur de l'évidement 2, près de l'un des flancs 4 du rouleau 1. Le seul anneau 31 suffit pour empêcher l'effondrement des spires, et cet anneau peut en outre être utilisé pour extraire les spires les plus internes du rouleau 1, même si l'évidement du côté opposé à l'anneau 31 est effondré, affaissé. Le mode de réalisation selon la figure 3, avec un seul anneau 31, peut-être utilisé pour un dévidage tangentiel au cas où il ne serait prévu qu'un seul élément fixe pour supporter le rouleau 1.The figure 3 illustrates another embodiment that differs from that of the figure 2 by the absence of the second ring 32. The only ring provided 31 has the characteristics described above: it is fixed inside the recess 2, near one of the flanks 4 of the roll 1. The single ring 31 is sufficient to prevent the collapse of the turns, and this ring can further be used to extract the innermost turns of the roll 1, even if the recess on the side opposite the ring 31 is collapsed, collapsed. The mode of realization according to the figure 3 with a single ring 31, can be used for tangential unwinding in the case where only one fixed element is provided for supporting the roll 1.

Quels que soient les modes de réalisation, le ou les anneaux 31, 32 sont constitués d'un matériau suffisamment résistant pour ne pas s'effondrer sous l'effet de la pression interne du rouleau. Une déformation dirigée peut cependant être mise à profit pour en -faciliter l'extraction comme cela est développé plus loin. Ils sont préférentiellement en un matériau recyclable tel que le carton.Whatever the embodiments, the ring or rings 31, 32 are made of a sufficiently strong material not to collapse under the effect of the internal pressure of the roller. Directed deformation can, however, be used to facilitate extraction as is further developed. They are preferably in a recyclable material such as cardboard.

Conformément à la présente invention, au moins un des anneaux est pourvu d'un moyen aidant à l'extraction hors du trou central au moment de la mise en service du rouleau.According to the present invention, at least one of the rings is provided with a means assisting the extraction out of the central hole at the time of commissioning of the roll.

Sur la figure 4, on a représenté un premier mode de réalisation du moyen d'extraction. Le rouleau cylindrique 10 est formé de l'enroulement d'une feuille autour d'un axe et comprend un trou central 13 le long de cet axe. Un anneau 40 est logé dans le trou à proximité du flanc 14 du rouleau. Un seul anneau est visible. Le rouleau peut en comporter deux. La largeur de l'anneau est inférieure à celle du rouleau. Pour un rouleau de largeur 100 mm, l'anneau a de préférence une largeur comprise entre 15 et 25 mm.On the figure 4 there is shown a first embodiment of the extraction means. The cylindrical roller 10 is formed of the winding of a sheet about an axis and comprises a central hole 13 along this axis. A ring 40 is housed in the hole near the sidewall 14 of the roll. Only one ring is visible. The roll may have two. The width of the ring is smaller than that of the roll. For a 100 mm wide roll, the ring preferably has a width of between 15 and 25 mm.

Un moyen d'extraction 42 est formé d'une partie de l'anneau délimitée par une fente 41 en arc de cercle notamment parallèlement au flanc 14. La longueur de l'arc de cercle est inférieure à une demi-circonférence. On libère le moyen d'extraction en déformant cette partie d'anneau vers l'axe du rouleau. Comme on le voit sur un rouleau de la figure on a ménagé deux moyens d'extraction 42. Pour extraire l'anneau, on glisse les doigts dans le trou et on pince les deux moyens 42. On tire ensuite vers l'extérieur et on entraîne l'anneau. Si l'anneau est lié à la feuille la plus interne du rouleau on l'entraîne également. La fente peut avoir toute forme le long de la surface courbe de l'anneau dans la mesure où elle en permet le pliage d'une partie vers le centre pour former une prise pour les doigts.An extraction means 42 is formed of a portion of the ring delimited by a slot 41 in a circular arc, in particular parallel to the sidewall 14. The length of the arc is less than half a circumference. The extraction means is released by deforming this ring portion towards the axis of the roll. As can be seen on a roll of the figure, two extraction means 42 have been provided. To extract the ring, the fingers are slid into the hole and the two means 42 are gripped. causes the ring. If the ring is bound to the innermost sheet of the roll it is also dragged. The slot may be any shape along the curved surface of the ring as it allows the portion to bend toward the center to form a finger grip.

Sur la figure 5 on a représenté un autre mode de réalisation du moyen d'extraction ; le rouleau 10 comme précédemment comprend au moins un anneau 50 à proximité du flanc 14. Cet anneau 50 comprend au moins une fente axiale 51 qui s'étend depuis un bord, le bord situé du côté du flanc 14. Il peut s'agir aussi du bord opposé par rapport au flanc 14. La fente s'étend sur une partie de la largeur de l'anneau.On the figure 5 another embodiment of the extraction means has been shown; the roll 10 as above comprises at least one ring 50 near the sidewall 14. This ring 50 comprises at least one axial slot 51 which extends from an edge, the edge located on the side of the sidewall 14. It may also be the edge opposite the flank 14. The slot extends over a portion of the width of the ring.

Comme on le voit sur la figure 5, l'anneau comprend ici deux fentes parallèles entre elles qui s'étendent jusqu'à la jonction en spirale 53 des bords de la bande de carton qui a été enroulée en spirale pour former le tube constituant l'anneau. Cela permet de créer les fentes 51 dès la fabrication du tube constituant l'anneau.As we see on the figure 5 the ring here comprises two mutually parallel slots extending to the spiral junction 53 of the edges of the cardboard web which has been spirally wound to form the tube constituting the ring. This allows to create the slots 51 from the manufacture of the tube constituting the ring.

Les deux fentes ménagent entre elles une languette 52.The two slots form between them a tongue 52.

Pour extraire l'anneau du trou central, on rabat la languette 52 vers l'axe du rouleau pour la dégager. On tire sur cette languette vers l'extérieur pour extraire l'anneau. Comme dans le cas précédent si la feuille est liée à l'anneau, elle est entraînée avec celui-ci.To extract the ring from the central hole, the tongue 52 is folded towards the axis of the roll to disengage it. This tab is pulled outward to extract the ring. As in the previous case if the sheet is tied to the ring, it is dragged with it.

Ces solutions sont avantageuses sur le plan de la fabrication des rouleaux car elles n'entraînent pas de modifications substantielles. Sur la figure 6 on a schématisé un exemple d'une étape de fabrication. Le log 100 a été formé par enroulement d'une feuille large au diamètre des rouleaux souhaités puis on tranche le log au moyen d'une scie S en rouleaux individuels 10. On a enroulé la feuille sur une broche non représentée et sur cette broche on a disposé au préalable des anneaux doubles à intervalles réguliers, chaque anneau double formant une bague. Avantageusement, on fixe temporairement en rotation et en translation les bagues sur la broche pour permettre l'enroulement de la feuille sur la broche puis son extraction.These solutions are advantageous in terms of the manufacture of rollers because they do not cause substantial changes. On the figure 6 an example of a manufacturing step has been schematized. The log 100 was formed by winding a wide sheet to the desired roll diameter and then slice the log by means of a saw S in individual rolls 10. The sheet was wound on a not shown pin and on this pin on has previously arranged double rings at regular intervals, each double ring forming a ring. Advantageously, the rings are fixed temporarily in rotation and in translation on the spindle in order to allow the sheet to be wound on the spindle and then extracted.

On fixe temporairement les bagues sur la broche de préférence par un moyen mécanique, notamment par sertissage. On obtient les rouleaux en sciant le log au travers des anneaux doubles. Sur la figure 7, on voit une bague 40' avec des fentes 41 transversales en arc de cercle. En sciant la bague 40' entre deux fentes parallèles 41, on obtient deux anneaux 40, un anneau pour chacun de deux rouleaux consécutifs du log 100. La figure 8 montre une bague 50' avec des fentes 51 parallèles à l'axe qui donnent deux anneaux 50 après sciage en travers des fentes 51.The rings are temporarily fixed on the spindle preferably by mechanical means, in particular by crimping. The rolls are obtained by sawing the log through the double rings. On the figure 7 , we see a ring 40 'with slots 41 transverse arcuate. By sawing the ring 40 'between two parallel slots 41, two rings 40, one ring for each of two consecutive rolls of the log 100 are obtained. figure 8 shows a ring 50 'with slots 51 parallel to the axis which give two rings 50 after sawing across the slots 51.

Sur la figure 9, on a représenté un autre mode de réalisation de l'anneau avec moyen d'extraction. L'anneau 60 est réalisé en carton ondulé, matériau en soi bien connu. L'anneau comprend ainsi une couche ondulée 61 entre une couche intérieure 62 et une couche extérieure 63. La couche intérieure 62 constitue le moyen d'extraction de l'invention. En effet, lorsque l'anneau est en place dans le trou central du rouleau, la couche ondulée supporte les efforts de pression du rouleau, laissant la couche intérieure 62 soumise à une pression relativement plus faible. Par ailleurs la couche intérieure est dégagée de la surface interne du rouleau permettant ainsi sa préhension par les doigts.On the figure 9 another embodiment of the ring with extraction means is shown. The ring 60 is made of corrugated cardboard, material in itself well known. The ring thus comprises a corrugated layer 61 between an inner layer 62 and an outer layer 63. The inner layer 62 constitutes the extraction means of the invention. Indeed, when the ring is in place in the central hole of the roll, the corrugated layer supports the pressure forces of the roll, leaving the inner layer 62 subjected to a relatively lower pressure. Moreover, the inner layer is disengaged from the inner surface of the roller thereby allowing it to be grasped by the fingers.

La figure 10 montre une autre variante d'anneau susceptible d'être utilisé conformément à l'invention. Ici l'anneau 70 est formé d'un enroulement en spirale, avec chevauchement des spires 71 sur une certaine épaisseur. De cette façon comme dans le cas précédent on peut saisir de manière aisée l'extrémité intérieure 72 de l'enroulement.The figure 10 shows another ring variant that can be used in accordance with the invention. Here the ring 70 is formed of a spiral winding, with overlapping turns 71 over a certain thickness. Of this way as in the previous case can be grasped easily the inner end 72 of the winding.

Sur la figure 11, on a représenté un autre mode de réalisation de l'invention. L'anneau 80 à l'intérieur du trou central du rouleau 10 est formé de deux couches de carton au moins. La couche radialement externe 81, du côté du papier tissue, est réalisée en carton ou en papier kraft de grammage relativement léger, de 80 g/m2 à 180 g/m2. La ou les couches radialement internes 82, sont à grammage plus lourd, 500 g/m2. L'anneau est réalisé comme un mandrin de rouleau connu en soi. Une ou plusieurs bandes formant des brins sont enroulées en hélice autour d'une forme cylindrique ; les spires d'un brin sont jointives ou sensiblement jointives le long d'une ligne hélicoïdale 80'. De préférence, la bande à haut grammage est partiellement encollée afin de permettre la libération après coupe à la scie, d'une partie de la pointe de l'enroulement. Cette pointe 83 forme avantageusement une languette d'extraction de l'anneau avant mise en service du rouleau.On the figure 11 another embodiment of the invention is shown. The ring 80 inside the central hole of the roll 10 is formed of at least two layers of cardboard. The radially outer layer 81, on the side of the tissue paper, is made of cardboard or kraft paper relatively light weight, from 80 g / m 2 to 180 g / m 2 . The radially inner layer or layers 82, are heavier weight, 500 g / m 2 . The ring is made as a roll mandrel known per se. One or more strand forming strips are helically wound around a cylindrical shape; the turns of a strand are contiguous or substantially contiguous along a helical line 80 '. Preferably, the high-weight web is partially glued to permit release after saw cutting of a portion of the winding tip. This point 83 advantageously forms a pull tab of the ring before putting the roll into service.

Le détachement de la couche radialement interne 82 permet de faire céder par la pression la couche radialement externe 81 et de libérer l'anneau complètement. Lors de l'extraction de celui-ci, la première feuille de papier tissue collée sur la couche 81 est entraînée avec celle-ci.The detachment of the radially inner layer 82 makes it possible to cause the radially outer layer 81 to yield by pressure and to release the ring completely. Upon extraction thereof, the first sheet of tissue paper adhered to the layer 81 is driven therewith.

On a représenté sur la figure 13, un mode de réalisation des anneaux à deux couches superposées, l'une interne 82, l'autre externe 81. Deux bandes de carton 181 et 182 ou autre matériau, sont enroulées en hélice autour d'une broche cylindrique 100. L'angle alpha de l'hélice par rapport à l'axe de la broche 100 est le même pour les deux bandes. Il est choisi de façon que les spires de la bande extérieure 181 soient jointives ou sensiblement jointives. La largeur de la bande intérieure 182 est supérieure à celle de la bande 181 extérieure. Il s'ensuit un chevauchement partiel des spires de la bande intérieure 182. En encollant l'intérieur de la bande extérieure 181, on solidarise les deux couches ainsi formées. Cependant la zone de chevauchement 182' des spires de la bande intérieure n'est pas collée. Les anneaux obtenus après tronçonnage du tube formé par les deux bandes présentent à l'intérieur, une partie non collée 182' Cette partie forme la languette de préhension. Ceci est un exemple de réalisation d'une zone non collée pour former un moyen de préhension. Cet exemple n'est paxs limitatif.We have shown on the figure 13 , an embodiment of the rings with two superposed layers, one internal 82, the other external 81. Two strips of cardboard 181 and 182 or other material, are wound helically around a cylindrical pin 100. The angle alpha of the helix relative to the axis of pin 100 is the same for both bands. It is chosen so that the turns of the outer band 181 are contiguous or substantially contiguous. The width of the inner band 182 is greater than that of the outer band 181. It follows a partial overlap of the turns of the inner band 182. By gluing the inside of the outer band 181, the two layers thus formed are secured. However, the overlap zone 182 'of the turns of the inner band is not glued. The rings obtained after cutting the tube formed by the two strips have inside, an unglued portion 182 'This part forms the gripping tab. This is an exemplary embodiment of a non-glued area to form a gripping means. This example is not limiting.

Sur la figure 12, le mode de réalisation consiste en un anneau 90 logé dans le trou central du rouleau 10, sur lequel on a pratiqué des marquages axiaux 90F, tels que des rainurages, qui au moment de la coupe par la scie provoquent la déformation de l'anneau 90 sous la pression de cette dernière. Ces rainurages sont parallèles à l'axe du rouleau et de préférence formés sur la face extérieure de l'anneau. Le nombre de rainurages est suffisant, six notamment, pour que la scie appuie toujours à proximité d'une ligne de marquage quelle que soit la position angulaire de l'anneau. L'anneau ainsi déformé présente une pointe ou un becquet 91 avec une arête formée du marquage 90F constituant une prise aisée pour l'extraction. L'anneau 90 est avantageusement formé comme les précédents d'une bande simple ou multiple enroulée en spirale.On the figure 12 , the embodiment consists of a ring 90 housed in the central hole of the roll 10, on which axial markings 90F have been made, such as grooves, which at the time of cutting by the saw cause the deformation of the ring 90 under the pressure of the latter. These grooves are parallel to the axis of the roll and preferably formed on the outer face of the ring. The number of grooves is sufficient, especially six, so that the saw always supports near a marking line regardless of the angular position of the ring. The ring thus deformed has a tip or a spoiler 91 with an edge formed of the marking 90F constituting an easy grip for extraction. The ring 90 is advantageously formed like the previous ones of a single or multiple band wound in a spiral.

L'invention n'est pas limitée aux modes de réalisations décrits, elle englobe toutes les variantes à la portée de l'homme du métier et couvertes par les revendications.The invention is not limited to the embodiments described, it encompasses all variants within the scope of those skilled in the art and covered by the claims.

Claims (23)

  1. Roll (10) of paper, in particular of tissue paper, comprising a central hole along its winding axis with a cylindrical reinforcing element on which the paper is wound, characterized in that said reinforcing element comprises at least one ring (40, 50, 60, 70; 80; 90) attached to the innermost turn of the roll (10), with a width less than the width of the roll and provided with a means of extracting the ring by pulling substantially along the axis of the roll.
  2. Roll according to Claim 1, the ring (40; 50) of which includes at least one slot (41; 51) that makes it possible, from the outer edge of the ring, to fold the material forming the ring (40; 50) towards the axis of the roll and so provide a grasping tab forming said extraction means.
  3. Roll according to the preceding claim, the slot (41) of which follows the curvature of the ring (40) and is in particular in arc-of-circle form.
  4. Roll according to Claim 2, the slot (51) of which is axially oriented.
  5. Roll according to the preceding claim, the slot (51) of which extends from an edge of the ring (50) over a part of the width of said ring.
  6. Roll according to Claim 3, 4 or 5, comprising two slots (41; 51).
  7. Roll according to Claim 1, the ring of which is flush with or slightly set back from one end of the roll (14).
  8. Roll according to Claim 1, the ring (70; 80) of which comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer towards the axis of the roll, with a means of extracting the inner layer.
  9. Roll according to Claim 8, of which the outer layer and the inner layer are glued to one another, a part of the inner layer in contact with the outer layer not being glued to the outer layer and forming the means of extracting the inner layer.
  10. Roll according to Claim 8, the ring (80) of which comprises at least two layers with an outer layer in contact with the sheet of paper and an inner layer toward the axis of the roll, the two layers being formed by helical turns, the turns of the inner layer partially overlapping and not being linked in the overlap area.
  11. Roll according to Claim 9, of which the turns of the outer layer and the turns of the inner layer are wound at one and the same winding angle and the turns of the inner layer have a width greater than that of the turns of the outer layer so as to create said overlap.
  12. Roll according to the preceding claim, of which the turns of the outer layer are adjoining.
  13. Roll according to Claim 8, the ring (60) of which is made of corrugated cardboard with a corrugated layer (61) between two non-corrugated layers (62, 63).
  14. Roll according to Claim 1, the ring (90) of which has an area deformed by displacement towards the axis of the roll so as to form a grasping lug (91).
  15. Roll according to any one of Claims 1 to 14, the ring of which is secured by gluing or by mechanical bonding to at least said innermost turn of the roll (10).
  16. Roll according to any one of the preceding claims, the ring (40; 50; 60; 70; 80; 90) of which presents a width less than half the width of the roll (10), preferably less than a third of the width of the roll and more particularly less than a quarter of the width of the roll.
  17. Roll according to the preceding claim, of which the width of the ring is at least equal to a seventh of the width of the roll.
  18. Roll according to any one of the preceding claims, comprising a second ring in the central hole axially offset relative to the first ring, secured in position without gluing.
  19. Use of a roll according to one of the preceding claims in a paper dispensing system with central unwinding.
  20. Method of manufacturing a roll according to one of Claims 1 to 17, comprising the fitting on a spindle of hoops (40'; 50') arranged to, after transverse cutting forming two of said rings, provide an extraction means on each of said rings, the winding of a wide sheet onto the spindle, the extraction of the spindle and the cutting of the log obtained through said hoops so as to obtain rolls with said rings.
  21. Method according to Claim 20, whereby the hoops are fixed temporarily in rotation and in translation onto the spindle.
  22. Method according to the preceding claim, whereby the hoops are fixed temporarily onto the spindle by a mechanical means, notably by clamping.
  23. Method of manufacturing a roll according to one of Claims 1 to 17, comprising the fitting of the ring or rings in the hole provided in the roll.
EP09716762A 2008-02-04 2009-02-03 Paper roll with central hole and reinforcing member, and method for making said roll Active EP2252534B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0800581A FR2927071B1 (en) 2008-02-04 2008-02-04 REINFORCING ELEMENT FOR ROLL WITHOUT CHUCK WITH CENTRAL OR TANGENTIAL DISCHARGE
FR0806423A FR2938518B1 (en) 2008-11-17 2008-11-17 PAPER ROLL WITH CENTRAL HOLE WITH REINFORCING ELEMENT
PCT/FR2009/000119 WO2009109723A1 (en) 2008-02-04 2009-02-03 Paper roll with central hole and reinforcing member, and method for making said roll

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US8366035B2 (en) * 2005-12-07 2013-02-05 Sca Hygiene Products Ab Supply package having support element with RFID
FR2955848B1 (en) 2010-02-01 2012-03-09 Georgia Pacific France SUPPORT CHUCK FOR A SHEET PRODUCT WRAPPED AROUND THE SAME AND ROLL WITH SUCH A CHUCK
AU2012388266B2 (en) * 2012-08-24 2015-09-10 Sca Hygiene Products Ab Wipe dispenser aid
CN103202671B (en) * 2013-05-07 2016-04-27 金红叶纸业集团有限公司 roll toilet paper and production method thereof
US20150090835A1 (en) * 2013-10-02 2015-04-02 Benjamin Bartley Toussaint Tube Free Toilet Paper Roll Adapter
ES2902524T3 (en) * 2017-09-29 2022-03-28 Essity Hygiene & Health Ab Coreless roll of absorbent sheet and method of making the same
WO2020053303A1 (en) * 2018-09-11 2020-03-19 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. A method of producing a fabric roll and roll thus made
US11224314B2 (en) 2019-05-31 2022-01-18 San Jamar, Inc. Web material center-pull dispenser assembly
USD984824S1 (en) 2019-05-31 2023-05-02 San Jamar, Inc. Center pull-through dispenser
CN110786766B (en) * 2019-10-24 2022-01-14 沃恩(青岛)医疗卫生用品有限公司 Roll toilet paper
HUE065546T2 (en) * 2020-12-28 2024-06-28 Corelex Shin Ei Co Ltd Coreless paper roll manufacturing method

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JP2000177894A (en) 1998-12-11 2000-06-27 Paper Converting Mach Co Inc Coreless roll
DE19946272A1 (en) * 1999-09-27 2001-03-29 Sigismund Laskowski Roll of toilet paper or kitchen towel has rings which are smaller than width of roll and are positioned with their ends flush with ends of roll or slightly inside it, with space between them which is not supported by rings
US6702212B2 (en) 2001-12-31 2004-03-09 Kimberly-Clark Worldwide, Inc. Method for axial feeding of ribbon material and a stock of ribbon material coils for axial feeding
SE0201729D0 (en) 2002-06-06 2002-06-06 Sca Hygiene Prod Ab Container
ATE411249T1 (en) 2003-06-12 2008-10-15 Georgia Pacific France ROLLER WITH INTERNAL TRIGGER AND PROCESS FOR PRODUCTION THEREOF

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EP2252534A1 (en) 2010-11-24
US20110006145A1 (en) 2011-01-13
US20130341450A1 (en) 2013-12-26
CA2712492C (en) 2016-04-12
EA017951B1 (en) 2013-04-30
EA201001225A1 (en) 2011-04-29
WO2009109723A1 (en) 2009-09-11
ATE555046T1 (en) 2012-05-15
CA2712492A1 (en) 2009-09-11
ES2386403T3 (en) 2012-08-20
US8910901B2 (en) 2014-12-16

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