EP3515270A1 - Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement - Google Patents

Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement

Info

Publication number
EP3515270A1
EP3515270A1 EP16775529.7A EP16775529A EP3515270A1 EP 3515270 A1 EP3515270 A1 EP 3515270A1 EP 16775529 A EP16775529 A EP 16775529A EP 3515270 A1 EP3515270 A1 EP 3515270A1
Authority
EP
European Patent Office
Prior art keywords
folding line
folded
folding
sheet
stack
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.)
Granted
Application number
EP16775529.7A
Other languages
German (de)
English (en)
Other versions
EP3515270B1 (fr
Inventor
Magnus Falk
Yoann Denis
Paul Carlson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Essity Hygiene and Health AB
Original Assignee
Essity Hygiene and Health AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essity Hygiene and Health AB filed Critical Essity Hygiene and Health AB
Priority to HUE16775529A priority Critical patent/HUE050928T2/hu
Priority to DK20160894.0T priority patent/DK3692877T3/da
Priority to EP20160894.0A priority patent/EP3692877B1/fr
Priority to PL16775529T priority patent/PL3515270T3/pl
Publication of EP3515270A1 publication Critical patent/EP3515270A1/fr
Application granted granted Critical
Publication of EP3515270B1 publication Critical patent/EP3515270B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/42—Dispensers for paper towels or toilet-paper dispensing from a store of single sheets, e.g. stacked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/24—Interfolding sheets, e.g. cigarette or toilet papers
    • 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
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/42—Dispensers for paper towels or toilet-paper dispensing from a store of single sheets, e.g. stacked
    • A47K2010/428—Details of the folds or interfolds of the sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1924—Napkins or tissues, e.g. dressings, toweling, serviettes, kitchen paper and compresses

Definitions

  • the present disclosure relates to a stack of folded paper sheets, particularly a stack of interfolded paper sheets and even more particular tissue paper sheets.
  • the disclosure further relates to a dispenser having such a stack and a method for forming such a stack, particularly for folding of the individual sheets and their interfolding .
  • the present disclosure is particularly applicable to table napkins, more particular dispenser napkins, but may also be employed for other applications such as paper towels.
  • the sheet when gripping the starter fold and withdrawing the sheet from a dispenser, the sheet only opens along the two parallel folding lines used for interfolding and, therefore, only doubles in size.
  • the individual sheets are easily unfolded when being withdrawn from the stack.
  • the individual sheets have a size after being unfolded corresponding to more than twice the times their size before withdrawal from the stack (i.e. compared to the folded sheet) .
  • a stack a dispenser having a stack and a method for forming a stack, the stack having a relatively small footprint, without impairing interfolding of the individual folded sheets, presenting a starter fold and/or easy unfolding of the individual folded sheets when being withdrawn from the stack.
  • At least one of the above objects is solved by a stack of folded paper sheets as defined in claim 1, a dispenser having such a stack as defined in claim 10 and a method for forming a stack of folded paper sheets as defined in claim 11.
  • a stack of folded paper sheets is used as table napkins, more particular dispenser napkins.
  • dispenser napkins are to be understood as napkins which are presented to a user via a dispenser, wherein the napkins are withdrawn from the dispenser one by one.
  • tissue paper (see also ISO 12625-1) is used as material for the folded sheets.
  • the stack comprises a plurality of individual sheets. Each folded sheet may have a rectangular shape. Each folded sheet may be folded from a base sheet.
  • the base sheet is to be considered as a sheet of one or more paper layers or plies without any fold.
  • the base sheet may as well have a rectangular shape.
  • each base sheet may be constituted from one or more plies. Further, each base sheet may be folded a plurality of times to form the folded sheet.
  • the term "folded sheet" is to be understood as the completely folded sheet in the stack.
  • each of the folded sheets is at least folded along a first folding line so that a part of a free edge opposite to the first folding line is located inward of the outer peripheral edges and on an outer surface of the folded sheet, whereby a starter fold is formed.
  • the part of the free edge is located on a top surface of the folded sheet in the stack or, to put it differently, on a top surface of the folded sheet facing upwards in the stack.
  • a starter fold is to be understood as a fold having a free edge presented to a consumer for instance via a dispensing opening to facilitate initial removal of the sheets from a dispenser.
  • the starter fold may provide a free edge located on the top of each folded sheet centrally or offset to the outline of the folded sheet.
  • the width of the starter fold perpendicular to the first folding line is at least 10 mm or at least 20 mm. The maximum width is mainly governed by the total width of the folded sheet in a
  • the maximum width is chosen to allow for at least 10 or at least 20 mm ofquaintfree surface" on top of the folded sheet other than the starter fold to provide sufficient space for the fingers gripping the free edge.
  • first folding line “second folding line”, etc, it is to be understood that first, second, etc. does not indicate the order in which the folds are made during the manufacturing process but only serves to
  • each folded sheet is further folded along one or more second folding lines non-parallel to the first folding line.
  • the second folding line/-s intersect/-s the starter fold.
  • the starter fold is folded along or about the second folding line/-s. If one second folding line is present, the folded sheet is separated in two panels connected at the second folding line. It is to be understood, that each folded sheet may be folded along two of the second folding lines forming a Z-shape and having three panels or even more than two of the second folding lines forming an accordion like shape and having more than three panels. If only one second folding line is
  • the second folding line separates the sheet in only two panels which are connected at the second folding line forming a U-shape.
  • two second folding lines are present, wherein one of the second folding lines separates the sheet in a first panel and a second middle panel and the other one of the second folding lines separates the sheet in the second middle panel and a third panel.
  • two consecutive folded sheets in the stack are interfolded or interleaved so that at least one panel of one sheet is disposed between two panels of the previous and/or consecutive sheet.
  • Comfortable withdrawing of the folded sheets from a dispenser is enabled by interfolding the consecutive sheets.
  • the immediate next (consecutive) folded sheet is also subject to a pulling force making the immediate next folded sheet partially protrude from the dispensing opening and being partially unfolded. The next user can then easily access this protruding sheet.
  • the first and second folding line it is possible to use the first and second folding line to reduce the footprint of each folded sheet compared to the base sheet and, thereby the stack.
  • the first and second folding line are non-parallel, unfolding of each folded sheet after being withdrawn from the stack or dispenser is simplified and enhanced compared to the prior art in that the at least partially unfolded sheet is more than double the size of the folded sheet after being withdrawn from the stack.
  • the used folding lines have a double function, namely the first folding line additionally serves for
  • the first folding line may extend perpendicular to the second folding line.
  • perpendicular folding lines for this purpose provides for ease of manufacture.
  • one of the folding lines may be formed during the manufacturing process in the machine direction (MD) , i.e. parallel to the machine direction, whereas the other one of the folding lines may be formed in the cross machine direction (CD), i.e. transverse to the machine direction.
  • MD machine direction
  • CD cross machine direction
  • the combination of standard machinery or elements thereof may be used to fold the sheets and form the stack.
  • the second folding line may intersect the starter fold.
  • the second folding line intersects the starter fold at a longitudinal center of the starter fold (the longitudinal direction is parallel to the free edge and the first folding line) .
  • the latter is particularly the case if only one second folding line is present centrally separating the folded sheet in only two panels.
  • the starter fold may extend along the two panels on surfaces of the panels facing away from each other. This is particularly the case if the starter fold is formed by folding the sheet about the first folding line before folding the sheet about the second folding line for interfolding with the starter fold being located on top of the sheet and the folding about the second folding line is performed towards the back of the sheet.
  • each folded sheet may be further folded along a third folding line parallel to the first folding line forming a backfold, the backfold and the starter fold being located on opposite sides of the sheet particularly before folding the sheet about the second folding line.
  • the starter fold the second folding line may intersect the backfold.
  • the second folding line may intersect the back fold at a longitudinal center of the backfold, the
  • the folded sheets of the stack form a number of plies or layers in the height direction of the stack, wherein one sheet has a plurality of plies or layers in the height direction at least because of the folding process.
  • the backfold provides for the advantage, that the number of plies or layers of the stack is the same at the edge of the first folding line and the edge of the third folding line.
  • the stack is more stable. In addition, this simplifies compression of the stack, if compression thereof is desired. Furthermore, if the folded sheet is already protruding from the dispensing opening, the user has two possibilities to grip the sheet, because the starter fold and the backfold somewhat protrude in opposite directions forming a "Z" at the protruding edge. Accordingly, the folded sheet is easy to grip and unfold. The backfold further reduces the footprint of the folded sheet. In certain embodiments, a width of the starter fold
  • the same number of plies over the height of the stack may be achieved not only at the outer edges corresponding to the first and third folding line, but over the entire area (in plan view) of the stack .
  • the backfold may extend along the two panels on surfaces of the panels facing each other.
  • the starter fold can be located at one side (e.g. outer side) of the folded sheet, i.e. the sheet folded about the second folding line, whereas the backfold is located at another opposite side (e.g. inner side) of the folded sheet.
  • the intermediately folded sheet that is the sheet before being folded about the second folding line, has two opposite surfaces.
  • the starter fold is located on one of the two surfaces and the backfold is located on the other of the two surfaces.
  • the starter fold is located on an outer side, that is surfaces of the panels facing away from each other, and the backfold is located on an inner side, that is surfaces of the panels facing towards each other. Accordingly, the backfold does not interfere with the starter fold.
  • the freedom of design of the starter fold is enhanced and it can be ensured that a user can easily grab the free edge of the starter fold.
  • the free edge of the starter fold may be formed by a fourth folding line.
  • the fourth folding line is parallel to the first folding line. Because of the fourth folding line, the footprint of the stack may be further reduced as compared to folded sheets having only two or only three folding lines.
  • the fourth folding line as the free edge of the starter fold provides for a starter fold consisting of at least two layers or plies connected at the fourth folding line, i.e. the free edge of the starter fold.
  • a more stable starter fold can be obtained which can be gripped more easily.
  • the appearance of the starter fold is enhanced as compared to a two ply starter fold wherein the two plies are unconnected at the free edge. If a backfold is present, the backfold may be formed by two plies or layers. In this case, the layers may be unconnected at the free edge of the backfold.
  • the fourth folding line is a half fold of the base sheet. Yet, the fourth folding line may well be a quarter fold of the base sheet. In this context a
  • half/quarter fold is a fold by which the base sheet is folded so as to have only half/quarter of its original completely unfolded size.
  • the fourth folding line may be parallel to the first folding line and the optional third folding line.
  • two/three of the three/four folding lines can be manufactured in the machine direction enabling manufacture at short cycle time .
  • An even further aspect concerns a dispenser having a housing accommodating a stack as described above and a dispensing opening, the free edge of the starter fold of the first
  • the user can again use the starter fold of the first folded sheet of the lower stack for withdrawing the first folded sheet of the lower stack through the dispensing opening.
  • An even further aspect relates to a method for forming a stack of folded paper sheets for use as table napkins or other applications as mentioned above.
  • the stack may have the configuration as described above.
  • any features described with respect to the stack and/or the dispenser above may also be combined with the following method.
  • the method comprises a) folding a plurality of sheets to form a plurality of intermediate folded sheets, each folded along a first folding line so that a free edge opposite and parallel to the first folding line is located inward of the outer peripheral edges of the intermediate folded sheet, wherein a starter fold is formed.
  • Inward of the outer peripheral edges of the intermediate folded sheet in this context means that the free edge is located in a distance to the outline of the intermediate folded sheet in a plan view.
  • the free edge may be located at a center between opposite peripheral edges or off-center.
  • step a) intermediate folded sheets are obtained.
  • the method further comprises, after step a) , the step b) : subsequently folding the intermediate folded sheets along a second folding line non-parallel to the first folding line forming a folded sheet, whereby a part of the free edge of the starter fold is located inward of the outer peripheral edges of and on an outer surface of the folded sheet, wherein the second folding line separates the folded sheet in two panels connected at the second folding line and step c) : interfolding two
  • steps b) and c) may be performed concurrently, wherein consecutive folded sheets, folded about the second folding line, are
  • interfolded or interleaved paper sheets include where the second folding line is parallel with the machine direction (length folding) or perpendicular with the machine direction (cross folding) .
  • the preferred technology for the invention is cross folding which facilitates introduction of the first, third and fourth folding lines through length folding.
  • Cross folding to achieve interfolding is often denoted by Interfold, Multifold or Single-fold. Also if there is some ambiguity as to the definitions of these terms, interfold often refers to when two webs are interleaved and multifold when only a single web is used.
  • Single-fold refers to when the folded paper sheet has only one second folding line. Single-fold was
  • the webs are cut separately to generate two streams of sheets of equal length and the cut is positioned so as not to coincide between the two webs and combined into one stream.
  • the stream of cut sheets is folded alternat ingly so as to form a stack of separate sheets where one or more panels of each sheet are interleaved with the panels of an adjacent sheet.
  • the web is cut in sheets of commonly equal length which are made to partially overlap through a retardation and displacement of the trailing edge of one sheet relative to the leading edge of the following thus generating a stream of sheets partially overlapping.
  • the overlapping can be so that the trailing edge sheet always ends up on the same side of the leading edge sheet or that it ends up on alternating sides. That stream is then folded alternatingly to so as to form a stack of separate sheets where one or more panels are interleaved. With one or two webs any number of panels can be made. And also can the first or last panel be made smaller than the other. With only two panels is normally required either a solution with two webs or a single web solution where the displacement of the trailing edge of the stream of sheets is alternatingly located as described above. This is a prerequisite to achieve an interleaving.
  • the method may also comprise the step of folding the sheets about a third folding line parallel to the first folding line for forming a backfold as described above.
  • the backfold and the starter fold are located on opposite sides of the sheet after folding and before step b) .
  • the step of folding the sheets about a third folding line may be performed before or after the step a) , but before the step b) .
  • the method may further comprise the step of folding the sheets along a fourth folding line before the step a) .
  • the fourth folding line may be parallel to the first folding line and the optional third folding line. Further, the fourth folding line may be a half fold or a quarter fold of the base sheet.
  • the web for producing the sheets or sheets are fed in a machine direction and the first folding line, the optional third folding line and the optional fourth folding line are parallel to (extend along or in) the machine direction and the second folding line is (extends) transverse (perpendicular) to the machine direction (in the cross machine direction) .
  • FIG. 1 A-C a process of folding a sheet and forming a stack according to a first embodiment
  • Figure 2 a perspective view of one folded sheet of the stack of figure 1;
  • Figure 3 A-D a process of folding a sheet and forming a stack according to a second embodiment
  • Figure 4 a perspective view of one folded sheet of the stack of figure 3;
  • Figure 5 a perspective view of one folded sheet of a stack according to a third embodiment
  • Figure 6 a perspective view of one folded sheet of a stack according to a fourth embodiment
  • Figure 7 a perspective view of one folded sheet of a stack according to a fifth embodiment
  • Figure 8 a perspective view of one folded sheet of a stack according to a sixth embodiment
  • Figure 9 a perspective view of one folded sheet of a stack according to a seventh embodiment.
  • Figure 10 a schematic side view of the folded sheets of Figure 9 showing the interfolding .
  • folding lines extending in the machine direction are perpendicular to folding lines extending in the cross machine direction (CD) in the embodiments .
  • FIGS 1A-C and 2 show a first embodiment.
  • Each folded sheet 30 of the first embodiment is 3 ⁇ 4 in size compared to the completely unfolded sheet (in the following referred to as base sheet 10).
  • Figure 1A shows a perspective of the base sheet 10.
  • the base sheet 10 has a rectangular shape having a first pair of parallel peripheral edges ll 1 and ll 2 and a second pair of parallel peripheral edges 12 1 and 12 2 .
  • the base sheet may consist of one or more paper plies.
  • the base sheet 10 is folded about a first folding line 13 indicated by the broken line in figure 1A.
  • the left hand peripheral edge 12 1 is folded about the first folding line 13 towards an upper surface 14 of the base sheet 10 as indicated by the arrow.
  • a starter fold 16 is formed on the upper surface 14 of the base sheet 10 and later the outer side of the folded sheet 30.
  • the starter fold 16 has a free edge
  • base sheet 10 is folded about a third folding line 15 indicated by the broken line in figure 1A.
  • the right hand peripheral edge 12 2 is folded about the third folding line 15 towards a lower surface of the base sheet 10 (opposite to the upper surface 14) as indicated by the arrow.
  • a backfold 17 is formed on the back surface of the base sheet 10 and later the inner side of the folded sheet 30.
  • the backfold 17 is connected to the remainder of the base sheet 10 at the third folding line 15.
  • a free edge of the backfold corresponds to the right hand peripheral edge 12 2 of the base sheet 10.
  • peripheral edges 12 1 and 12 2 are peripheral edges 12 1 and 12 2 .
  • a web having a total width W corresponding to the length of the peripheral edges ll 1 and ll 2 is fed in a machine direction (MD) parallel to the peripheral edges 12 1 and 12 2 .
  • a plurality of sheets may be formed by cutting the web in a cross machine direction (CD) to form the
  • the folding about the first folding line 13 and the third folding line 15 may be achieved in the machine direction (MD) either concurrently, before or after the mentioned cutting.
  • the intermediate folded sheet 20 is folded about a second folding line 18 towards the back in figure IB as shown by the arrow.
  • this folding about the second folding line 18 is performed in the cross machine direction (CD) .
  • the intermediate folded sheet 20 is separated into a first panel 19 and a second panel 21 by the second folding line 18.
  • the peripheral edges ll 1 and ll 2 may be congruent in plan view.
  • the outline of the folded sheet 30 is delimited by the first folding line 13, the second folding line 15 parallel thereto, the second folding line 18 perpendicular to the first folding line and the second folding line as well as the peripheral edges ll 1 and ll 2 parallel to the second folding line.
  • the upper surface 14 of the base sheet 10 forms the outer surface of the folded sheet 30.
  • the lower surface opposite to the upper surface 14 forms the inner surface of the folded sheet 30.
  • the two panels 19, 21, connected at the second folding line 18, form a U-shape.
  • the back fold 17 is located on an inner surface side.
  • outer surfaces 22 of the backfold 17 facing away from the back surface of the base sheet 10 face each other but are located on an inner surface side of the folded sheet 30.
  • the starter fold 16 is located on an outer surface side.
  • outer surfaces 23 of the starter fold 16 facing the upper surface 14 of the base sheet 10 face away from each other.
  • the folding of the intermediate folded sheet 20 about the folding line 18 is used to interfold a plurality of
  • the two panels 21 and 19 sandwich another panel 19' of a consecutive folded sheet 30' (the panel 19' of the consecutive folded sheet 30' has been indicated only schematically in figure 2) .
  • the consecutive folded sheet 30' sandwiches the panel 19 of the folded sheet 30 and the panel 21'' (not shown) of a further consecutive folded sheet 30'' (not shown) between its panels 19' and 21' . This is repeated to form the stack 40 of a plurality of folded sheets 30.
  • width Wl of the starter fold 16 that is the length of a line perpendicular to and connecting the first folding line 13 and the peripheral edge 12 1 and the width W2 of the backfold 17, that is the length of a line
  • the planar size of the intermediate folded sheet 20 is 50% as compared to the planar size of the base sheet 10.
  • the free edge of the starter fold 16 and the free edge of the backfold 17 are congruent in plan view.
  • the number of layers formed by the plurality of folded sheets 30 over the height H of the stack 40 is the same over the whole planar area of the stack 40.
  • the number of layers per folded sheet in the height direction is four over the entire planar area.
  • the stack may be accommodated in a dispenser 41 as
  • the dispenser 41 has a dispensing opening 42, which in the present example may be situated at an outer edge of the dispenser 41 in a plan view.
  • the dispenser 41 as shown in figure 1C may have been refilled with a stack 40 recently so that no folded sheet 30 protrudes from the dispensing opening 42. Yet, the free edge of the starter fold 16 formed by the peripheral edge 12 1 is visible and accessible through the dispensing opening 42. If a user intends to withdraw a folded sheet 30 from the dispenser 41, the user can thus readily grab the free edge of the starter fold 16 and withdraw the folded sheet 30 through the
  • the panel 19' of the consecutive folded sheet 30' is entrained by the withdrawal of the folded sheet 30.
  • the panel 19' of the consecutive folded sheet 30' protrudes from the dispensing opening 42.
  • the consecutive folded sheet 30' can be withdrawn even more easily. This process is continued as long as the folded sheets 30 are interfolded.
  • the first folded sheet of the second stack will again not protrude from the dispensing opening 42. Yet, in this case, the user can again grab the starter fold 16 of the first folded sheet of the second stack as explained above .
  • the folded sheet 30 is automatically unfolded about the first folding line 13, the second folding line 18 and the third folding line 15.
  • the unfolding about the first folding line 13 and the third folding line 50 again doubles the size of the intermediate folded sheet 20 to the full size of the base sheet 10. Accordingly, the user can automatically get the benefit of the full area of the base sheet 10 without having to manually unfold the sheet /napkin .
  • FIGS 3A-D and 4 show a second embodiment.
  • Each folded sheet 30 of the second embodiment is 1 / 8 in size compared to the completely unfolded base sheet 10.
  • the main difference between the first and second embodiment is, that the base sheet 10 is in a first step, shown in figure 3A, folded about a fourth folding line 50 in half as shown by the arrow.
  • the planar size of the thus folded intermediate folded sheet 1 is reduced by 50% compared to the planar size of the base sheet 10.
  • the fourth folding line 50 is as well created in the machine direction (MD) , yet before the formation of the first folding line 13 and the third folding line 15.
  • the intermediate folded sheet 1 shown in figure 3B is in principle similar to the base sheet 10 in figure 1A except that it is double layered because of the folding about the fourth folding line 50.
  • the free edge of the starter fold 16 is formed by the fourth folding line 15.
  • the starter fold 16 is double layered (see figure 4) and the free edge is "closed” in that the two layers of the starter fold 16 are connected by the fourth folding line 50.
  • This configuration provides for a more stable starter fold 16 which is easy to grab.
  • the free edge of the backfold 17 is formed by the aligned peripheral edges 12 1 and 12 2 of the base sheet 10.
  • the backfold 17 is double layered, but the free edge thereof is "open” in that the two layers are unconnected .
  • the further intermediate folded sheet 20 is then folded about a second folding line 18 extending in the cross machine direction (CD) .
  • the size of the further intermediate folded sheet 20 is further reduced by 50% to obtain the folded sheet 30.
  • the folded sheet 30 is accordingly only 12.5% in planar size of the base sheet 10 in this embodiment.
  • the folding about the second folding line 18 serves to interfold a plurality of folded sheets 30 to form a stack 40 as shown in figure 3D.
  • a third embodiment is shown in figure 5.
  • the embodiment in figure 5 differs over the first embodiment only in that the backfold 17 is omitted.
  • the base sheet 10 is only folded once about the first folding line 13 and no folding about the third folding line 15 is performed.
  • the width Wl of the starter fold 16 may be increased compared to the first and second embodiment to half the width W3 of the remainder of the base sheet 10. Accordingly, the free edge formed by the peripheral edge 12 1 is located in the center of the folded sheet 30 in plan view, that is centrally between the folding line 13 and the peripheral edge 12 2 .
  • the planar size of the base sheet 10 is reduced by 1 / 3 when folding the base sheet 10 about the first folding line 13 for forming the starter fold 16. Accordingly, the size of the intermediate folded sheet 20 in this
  • embodiment is about 66% of that of the base sheet 10.
  • the intermediate folded sheet 20 is again folded about the second folding line 18 used for interfolding as in the first and the second embodiment.
  • the planar size of the folded sheet 30 is only 50% of the planar size of the intermediate folded sheet 20 and only 1 / 3 (about 33,3%) of the planar size of the base sheet 10.
  • a fourth embodiment is shown in figure 6.
  • the starter fold 16 is double layered to provide for a more stable starter fold 16 which is hence easier to be grabbed.
  • the portion folded about the first folding line 13 is again folded in half about a fifth folding line 51 in an opposite direction.
  • the fifth folding line 51 is parallel to the first folding line 13 and hence also the third folding line 15. Accordingly, a starter fold 16 having a width
  • the free edge of the starter fold 16 is formed by the fifth folding line 51.
  • the free edge is, as in the second embodiment, "closed” in that the two layers forming the starter fold 16 are connected at the fifth folding line 51.
  • the free edge of the starter fold 16 is again centered relative to the outline between the first folding line 13 and the third folding line 15.
  • the backfold 17 extends over the entire inner side of the panels 19, 21. That is, the width W2 of the backfold 17 is the same as the width W3 of the remainder of the folded sheet 30.
  • the planar size of the folded sheet 30 is, in this case
  • a fifth embodiment is shown in figure 7.
  • the fifth embodiment differs from the fourth embodiment only in that also the backfold 17 is folded in half similar to the starter fold 16 in the fourth and the fifth embodiment.
  • the same number of layers may be achieved over the height H of the stack and over the entire planar area thereof.
  • the number of layers per sheet 30 is six over the whole width W3.
  • the number of layers in the fourth embodiment in figure 6 is six in the left portion of the width W3 and four in the right portion of the width W3 (the left and right portion are divided in the center of the width W3) . Accordingly, the stack formed from sheets 30 as shown in the fifth embodiment would be more stable and can be more easily compressed as compared to the one shown in the fourth embodiment .
  • the planar size of the folded sheet 30 is, in this embodiment again, 1 / 6 of the size of the base sheet 10.
  • a sixth embodiment is shown in figure 8.
  • the sixth embodiment differs from the first embodiment in that the intermediate or middle portion having the width W3 of the base sheet 10 is folded about a seventh folding line 53 and an eighth folding line 54 to 1 / 3 of its size.
  • the footprint of the folded sheet 30 can be further reduced.
  • the planar size of the folded sheet 30 is only 1 / 8 of the planar size of the base sheet 10.
  • That remainder of the sixth embodiment is the same as that of the first embodiment.
  • any of the third to sixth embodiment may additionally include first folding the base sheet 10 into half along the fourth folding line 50 and only subsequently starting with the folding process described in these embodiments.
  • the first folding line 13 may be selected so that the free edge of the starter fold 16 is centered or off-centered in all of the above embodiments.
  • the width of the backfold 17 can be adjusted as desired.
  • the width of the backfold 17 is the same as the width of the starter fold 16.
  • the free edges of the starter fold 16 and the backfold 17 are aligned or congruent in plan view.
  • interfolding has been explained with respect to a U-folded sheet 30. Yet, the interfolding can also be achieved when the intermediate folded sheet 20 is folded in opposite directions about parallel but distanced second folding lines 18, whereby a Z-folded sheet is obtained similar to that described in US 2014/0057069 Al .
  • Such an embodiment is shown in figures 9 and 10. This embodiment is similar to the one described with respect to figures 3 and 4 with the exception that the intermediate folded sheet 20 shown in figure 3C is folded twice about two parallel second folding lines 18. Accordingly and considering the folded sheet 30, a part of the outer surface 23 and, hence, of the free edge 50 of the starter fold 16 is located on the top of the folded sheet 30 in the stack and hence faces upward in the stack.
  • the free edge 50 of the starter fold 16 is located on top of the top panel 62.
  • the remainder of the starter fold 16, i.e. of the outer surface 23 and the free edge 50, are located on an inner side surface of the folded sheet 30 between the intermediate panel 60 and the bottom panel 61. Similar, the backfold 17 or more
  • outer surface 22 is located on an inner side surface of the folded sheet 30 between the top panel 62 and the intermediate panel 60 whereas the remainder of the backfold 17 is located on an outer side surface of the folded sheet 30, namely the bottom surface of the bottom part 61 and the facing downward in the stack.
  • FIG. 10 The interfolding of such folded sheets 30 is shown in figure 10.
  • one panel, namely the bottom panel 62, of one folded sheet 30 is sandwiched between 2 panels, namely the top panel 61 and the intermediate panel 60 of the

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Sanitary Thin Papers (AREA)

Abstract

La présente invention concerne un empilement de feuilles de papier, en particulier pour une utilisation en tant que serviettes de distributeur, l'empilement comprenant une pluralité de feuilles pliées (30), chaque feuille pliée (30) étant pliée le long d'une première ligne de pliage (13) de telle sorte qu'une partie d'un bord libre opposée à la première ligne de pliage (13) soit située sur une surface extérieure de la feuille pliée (30) et vers l'intérieur par rapport aux bords périphériques extérieurs de la feuille pliée (30), un pli initial (16) étant ainsi formé, chaque feuille pliée (30) étant en outre pliée le long d'une seconde ligne de pliage (18) non parallèle à la première ligne de pliage (13), la seconde ligne de pliage (18) séparant la feuille pliée (30) en deux panneaux reliés au niveau de la seconde ligne de pliage (18), deux feuilles pliées consécutives (30) étant pliées de manière imbriquée de sorte qu'un panneau (19) d'une feuille pliée (30) soit disposé entre deux panneaux (19, 21) de la feuille pliée (30) consécutive. La présente invention concerne en outre un procédé de fabrication d'un tel empilement et de pliage des feuilles comprises dans l'empilement ainsi qu'un distributeur contenant un tel empilement.
EP16775529.7A 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement Active EP3515270B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
HUE16775529A HUE050928T2 (hu) 2016-09-20 2016-09-20 Papírlapokból képzett köteg, a köteget tartalmazó adagolóeszköz és eljárás a köteg kialakítására
DK20160894.0T DK3692877T3 (da) 2016-09-20 2016-09-20 Stak af papirark, dispenser, der har en sådan stak og fremgangsmåde til at danne sådan en stak
EP20160894.0A EP3692877B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement
PL16775529T PL3515270T3 (pl) 2016-09-20 2016-09-20 Stos arkuszy papierowych, dozownik zawierający taki stos i sposób tworzenia takiego stosu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/072329 WO2018054455A1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20160894.0A Division EP3692877B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement
EP20160894.0A Division-Into EP3692877B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement

Publications (2)

Publication Number Publication Date
EP3515270A1 true EP3515270A1 (fr) 2019-07-31
EP3515270B1 EP3515270B1 (fr) 2020-08-12

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EP16775529.7A Active EP3515270B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement
EP20160894.0A Active EP3692877B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement

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EP20160894.0A Active EP3692877B1 (fr) 2016-09-20 2016-09-20 Empilement de feuilles de papier, distributeur comportant un tel empilement et procédé de formation d'un tel empilement

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US (1) US20210307570A1 (fr)
EP (2) EP3515270B1 (fr)
CN (1) CN109561797A (fr)
AU (1) AU2016423520B2 (fr)
BR (1) BR112019001904B1 (fr)
CA (1) CA3033043C (fr)
CO (1) CO2019001586A2 (fr)
DK (2) DK3515270T3 (fr)
ES (2) ES2821977T3 (fr)
HU (2) HUE050928T2 (fr)
MX (1) MX2019003162A (fr)
PL (2) PL3692877T3 (fr)
RU (1) RU2709394C1 (fr)
UA (1) UA122940C2 (fr)
WO (1) WO2018054455A1 (fr)
ZA (1) ZA201901077B (fr)

Families Citing this family (4)

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RU2728417C2 (ru) 2015-11-20 2020-07-29 Эссити Хайджин Энд Хелт Актиеболаг Волокнистая структура с противомикробным действием
US10980377B1 (en) 2019-12-18 2021-04-20 Essity Hygiene And Health Aktiebolag Apparatus and methods for paper dispensing
US11116365B2 (en) 2019-12-18 2021-09-14 Essity Hygiene And Health Aktiebolag Horizontally oriented paper product dispenser and related methods
CN111115245B (zh) * 2020-01-15 2021-05-18 河北科技大学 毛巾抓取结构

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
FR2613698B1 (fr) * 1987-04-10 1990-11-02 Kaysersberg Sa Boite contenant des feuilles enchevetrees, et procede de formation des feuilles
CA2254323C (fr) * 1997-12-31 2008-01-15 Kimberly-Clark Worldwide, Inc. Systeme de distribution de mouchoirs portatif et flexible
CN2342753Y (zh) * 1998-07-16 1999-10-13 詹庆发 袖珍包广告面纸的改良
JP3717331B2 (ja) * 1999-03-30 2005-11-16 ユニ・チャーム株式会社 ウェットティッシュ包装体
CN2410967Y (zh) * 2000-01-07 2000-12-20 许嘉芬 一种折叠面纸的结构
SE525145C2 (sv) * 2003-05-05 2004-12-07 Sca Hygiene Prod Ab Stapel av sammanvikta materialark samt metod för dess framställning
US7204390B2 (en) * 2003-05-05 2007-04-17 Sca Hygiene Products Ab Stack of interfolded material sheets and method for its production
JP5547534B2 (ja) * 2010-03-31 2014-07-16 ユニ・チャーム株式会社 ウェットワイプスの製造方法及び製造装置
US8609223B2 (en) * 2011-12-30 2013-12-17 Sca Hygiene Products Ab Interfolded napkins and method for interfolding napkins
CN202776102U (zh) * 2012-08-23 2013-03-13 黄灿灿 由吸收性片材构成的叠层
US9199823B2 (en) * 2013-08-19 2015-12-01 Georgia-Pacific Consumer Products Lp Stack of folded paper products

Also Published As

Publication number Publication date
AU2016423520A1 (en) 2019-02-14
US20210307570A1 (en) 2021-10-07
NZ750389A (en) 2020-09-25
ES2931183T3 (es) 2022-12-27
BR112019001904B1 (pt) 2022-08-30
HUE060461T2 (hu) 2023-03-28
CO2019001586A2 (es) 2019-04-30
ES2821977T3 (es) 2021-04-28
EP3692877B1 (fr) 2022-10-12
EP3692877A1 (fr) 2020-08-12
CA3033043C (fr) 2021-01-19
DK3515270T3 (da) 2020-09-28
ZA201901077B (en) 2022-06-29
CA3033043A1 (fr) 2018-03-29
WO2018054455A1 (fr) 2018-03-29
BR112019001904A2 (pt) 2019-05-07
EP3515270B1 (fr) 2020-08-12
MX2019003162A (es) 2019-05-27
CN109561797A (zh) 2019-04-02
PL3692877T3 (pl) 2023-01-02
UA122940C2 (uk) 2021-01-20
AU2016423520B2 (en) 2019-07-18
PL3515270T3 (pl) 2020-12-28
RU2709394C1 (ru) 2019-12-17
HUE050928T2 (hu) 2021-01-28
DK3692877T3 (da) 2022-11-14

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