AU2009346254A1

AU2009346254A1 - Dispenser arrangement for interfolded napkins

Info

Publication number: AU2009346254A1
Application number: AU2009346254A
Authority: AU
Inventors: Cecilia Nordlund
Original assignee: SCA Hygiene Products AB
Current assignee: Essity Hygiene and Health AB
Priority date: 2009-05-15
Filing date: 2009-05-15
Publication date: 2011-11-24
Also published as: US20120067918A1; RU2011151047A; EP2429367A1; MX2011012124A; WO2010132005A1; CN102458204A; EP2429367A4; RU2492796C2

Abstract

A dispenser arrangement for interfolded napkins, the dispenser (1) comprising a container (2) having a bottom wall (5) and side walls (6) surrounding the bottom wall (5) and extending from the bottom wall (5) in a direction generally perpendicular thereto and defining a dispensing opening (7) opposite the bottom wall (5), the bottom wall (5) comprising a supporting surface (8) for supporting a rectangular stack (3) of interfolded napkins (11). At least one weight (4) is placed in the container (2), the weight (4) having a projected surface on the bottom wall (5) which is less than or equal to one third of the stack supporting surface (8).

Description

WO 2010/132005 PCT/SE2009/050557 1 DISPENSER ARRANGEMENT FOR INTERFOLDED NAPKINS TECHNICAL FIELD The invention pertains to a dispenser arrangement for interfolded napkins, 5 the dispenser comprising a container having a bottom wall and side walls surrounding the bottom wall and extending from the bottom surface in a direction generally perpendicular to the bottom wall and defining a dispensing opening opposite the bottom wall, the bottom wall comprising a supporting surface for supporting a rectangular stack of interfolded napkins. 10 BACKGROUND ART Napkins in the form of sheets of material intended for wiping and for hygienic purposes are common household items that may be provided in the form of stacks of napkins from which individual napkins can be readily removed 15 when needed. The dispenser for the napkins should be relatively inexpensive, easy to handle, should protect the napkins up to use and should be easy to move to a location where the napkins are needed, such as to a table, a kitchen counter, etc. 20 A common type of dispenser for this kind of napkins is an open cardboard box in which the napkins are arranged in a stack standing on an edge of the napkins with part of the napkins protruding through the opening in the box to provide grippability. This is a simple and inexpensive way of dispensing the napkins. However, the protruding parts of the napkins tend to fold over the 25 edge of the box and become ruffled and deformed. Moreover, as soon as a few napkins have been removed from the box, the remaining stack does not fill the width of the container with the result that the stack will buckle in an accordion-like way and sink down into the box adding to the deformation of the not yet dispensed napkins. 30 A further commonly used option is to arrange the napkins in an interfolded stack which is placed standing on a non-folded surface in a container having WO 2010/132005 PCT/SE2009/050557 2 a dispensing opening at the top of the container. The napkins are then successively removed from the top of the stack through the dispensing opening. 5 Interfolded napkins are sheets of materials arranged in a stack of superposed sheets which are each folded at least once. The sheets are interlinked in such a way that the separate folded sheets of material form a chain of sheets where each sheet has a leading panel and a trailing panel, the trailing panel being at least partly overlapped with the leading panel of the subsequent 10 sheet in the stack. In this manner, the individual sheets are held loosely together by means of frictional forces arising between the overlapping parts. The sheets may be dispensed from a dispenser by pulling at the leading panel of the first sheet in the stack. In this manner, the first material sheet is extracted at the same time as a predetermined part of the leading panel of a 15 subsequent material sheet is fed into a dispensing position in the dispenser. The dispenser usually has a lid or cover with a dispensing opening that restricts the width of the dispensed napkin in order to keep the leading panel of the next napkin to be dispensed from falling back into the dispenser. 20 A problem with this solution is that when a first napkin is extracted, the napkin restriction caused by the dispensing opening will cause the napkin to wrinkle in an irreversible manner. There is also a risk that the leading part of the next paper towel in the stack becomes tangled or crumpled in the 25 dispensing opening. It may also happen that when a first napkin is extracted and a predetermined part of the next napkin is supposed to be fed out the interlinking function is either too weak, so that the subsequent towel falls back into the container or the interlinking function is too strong, so that more than one napkin is withdrawn. 30 For napkins that are to be used, for example, at a dinner it is of importance that they look nice when they are taken out of the dispenser. It is also WO 2010/132005 PCT/SE2009/050557 3 important that they are not ripped or otherwise damaged so that they cannot be used for the intended purpose. It is an object of the present invention to solve the above problems by 5 providing an improved dispenser arrangement for dispensing interfolded napkins. SUMMARY OF THE INVENTION 10 In accordance with the invention there is offered a dispenser for interfolded napkins, the dispenser comprising a container having a bottom wall and side walls surrounding the bottom wall and extending from the bottom wall in a direction generally perpendicular to the bottom wall and defining a dispensing opening opposite the bottom wall, the bottom wall comprising a supporting 15 surface for supporting a rectangular stack of interfolded napkins. The dispenser is primarily distinguished in that at least one weight is placed in the container, the weight having a projected surface on the bottom wall which is less than or equal to one third of the stack supporting surface. 20 When the dispenser is being used, a stack of interfolded napkins is placed on the supporting surface on the bottom wall. The stack of interfolded napkins has a rectangular shape with rectangular or square bottom surface formed by a trailing panel of the last napkin in the stack. The stack may have any suitable dimensions such as any suitable height, width and length. The width 25 and length dimensions are defined by the dimensions of the bottom surface of the stack and the height is measured perpendicular to the bottom surface and is determined by the number of napkins in the stack as well as the number of plies and panels in each napkin. The individual napkins may comprise one or more plies or layers and may have been folded into two or 30 more panels.

WO 2010/132005 PCT/SE2009/050557 4 By means of the invention, fall-back of the gripping portion of an uppermost napkin in a stack of interfolded napkins is avoided without the risk of the tearing or wrinkling of the napkin being pulled out or of the next napkin. The dispenser arrangement according to the invention will also ascertain that only 5 one napkin is dispensed at a time. The dispenser can easily be operated with only one hand and has a simple and reliable construction. The bottom wall of the container may have any suitable circumferential shape such as a circular shape, an irregular shape, a rectangular shape with 10 rounded corners, etc. as long as the bottom wall provides a sufficiently large planar rectangular supporting surface for a stack of interfolded napkins. The side walls of the container may be completely perpendicular to the plane of the bottom wall or may be slightly inclined outwardly or in over the bottom wall. The side walls delimit the container space and the size of the 15 dispensing opening and are arranged to contain and support the stack of interfolded napkins without deforming the napkins. The container material may be any material suitable for the purpose such as paper, plastic, cardboard, wood, ceramic, yarn, etc. The container may be 20 made by folding a sheet of material, molding, blow-molding, extrusion, knitting, weaving, etc. The physical form of the container may be a more or less rigid box, a bag or a basket. If the container is in the form of a bag with a planar bottom wall, the side walls need to have sufficient rigidity to stay generally upright and protect and support a stack inside the bag when the 25 bag is stood on a surface such as a table or a worktop. A container made of a somewhat flexible material may have side walls that can be folded down to the outside of the container so that the container height can be adapted to the height of a stack of napkins placed in the container. A foldable container offers the possibility of successively lowering the sidewalls of the container 30 as the napkins are removed from the container and the height of the container diminishes.

WO 2010/132005 PCT/SE2009/050557 5 The dispenser arrangement according to the invention has a simple construction and may be made from inexpensive and readily available materials. Moreover, the dispenser arrangement has a surprisingly reliable function and will not damage the dispensed napkins. 5 The at least one weight that is placed in the container preferably has an at least partially curved surface. By making the weight at least partly curved, movement of the weight in the container may take place by means of the weight rolling on the curved surface. This means that the frictional forces 10 between the weight and the napkins to be dispensed are minimised and that smooth dispensing is afforded. By avoiding sharp edges and corners, the risk of damaging the napkins in the process of dispensing is also largely eliminated. For example, the weight may be a cube with rounded corners, it may have an egg-shape or it may have a perfect spherical shape. 15 The weight or weights used in the present invention may theoretically be very small and still fulfil their function in the dispenser. However, for practical reasons the weights preferably have a sufficient size to allow them to be easily taken out of the dispenser and put back again without too much 20 manipulation when recharging the dispenser with a new stack of napkins. For child-safety reasons it may also be a concern to make the weights big enough so that they cannot be swallowed. Consequently, it may be suitable that the weights have an effective cross-section as herein defined of at least 30 millimeters. 25 The effective cross-section for the weight or weights is determined as the inner diameter of the smallest tube through which the weight can be passed. Hence, for an irregularly shaped weight, the weight has to be oriented so that the smallest dimension of the weight can be determined. 30 WO 2010/132005 PCT/SE2009/050557 6 In accordance with the invention, the at least one weight may have an effective cross-section of from 30 millimeters to 100 millimeters and preferably an effective cross-section of from 40 millimeters to 70 millimeters. 5 The at least one weight may have a weight of from 20 to 600 grams, preferably of from 50 to 400 grams and most preferably of from 70 to 200 grams. When only one weight is used it will preferably have a weight of from 100-500 grams. When more than one weight is being used the total weight is preferably not more than 1000 grams. 10 The dispenser arrangement according to the invention may comprise more than one weight that is placed in the container. The weights may be of different size, but preferably all weights have the 15 same effective cross-section. If the weights are small such as below 10 mm in cross-section, so that passing them through a tube to determine the effective cross-section becomes impractical, the effective cross-section may alternatively be determined by passing them through a sieve. The mesh-size of the sieve then determines the effective cross-section of the weights. 20 When using several weights, all weights may have the same shape, with identically shaped balls being preferred. However, differently shaped weights are also contemplated within the scope of the invention, such as naturally shaped stones, fruit, etc. 25 The weights may be of the same weight or may have different weights. The difference in weight may be achieved by using differently sized weights and/or by using weights of materials having different densities. 30 When more than one weight is placed in the dispenser, the total projected surface of the weights on the stack supporting surface of the bottom wall may be at least 20% of the stack supporting surface, preferably at least 40% of WO 2010/132005 PCT/SE2009/050557 7 the stack supporting surface, more preferably at least 60% of the stack supporting surface and most preferably at least 80% of the stack supporting surface. Although it is sufficient to use a single weight in order for the dispenser to function in accordance with the invention, the dispenser will 5 preferably contain two or more weights. Multiple weights may be arranged in two or more layers on top of each other. However, if more than approximately 10 weights are used, it may be desirable to use weights of a sufficiently small size to allow the weights to be poured in and out of the container. Hence, for such embodiments, the weights may have an effective cross-section of from 10 1-30 millimeters, such as from 5-15 millimeters. Suitable multiple weights are peas, pebbles, small glass balls, metal balls, etc. When using more than one weight, the weights may be arranged in at least two rows of weights each row comprising at least one weight. 15 The weights may be made from any suitable material or combination of materials such as wood, glass, ceramics, natural and synthetic polymers, stone and metal. Accordingly, the weights may be of glass of plastic and may have a core or an outer layer of a different material. A particularly 20 aesthetically pleasing design is a ball of clear plastic or glass having a decorative or informative object enclosed in the plastic or glass and visible through the plastic or glass. The weights may also be in the form of a shell enclosing an inner object in order to produce a sound effect or to provide a visual effect through the shell. In the latter case, the shell has to be at least 25 partly see-through by means of being at least partly made of a transparent material of by having openings therein. The surface of the weights may comprise a sound reducing material in order to avoid rattling of the weights against each other and against the walls of the 30 container. By way of example, the sound reducing material may be a coating of natural or synthetic rubber, a frosting, a surface on the weights made of wood, cork, fibres or similar.

WO 2010/132005 PCT/SE2009/050557 8 In a corresponding manner, the dispenser side walls may comprise a sound reducing material. 5 The at least one weight may be a man-made object or may be chosen among suitable natural items preferably adding a decorative function such as fruit, vegetables, seeds, etc. By way of example it is possible to use suitably sized apples, oranges, pears, lemons, limes, potatoes, chestnuts, eggs, peas, stones, etc. When using natural objects as weights in the dispenser 10 according to the invention, it should be ascertained that the weights are clean and if using perishable goods, they should be replaced before they go bad. During use, the dispenser according to the invention contains a stack of interfolded napkins that has been placed on the planar supporting surface of 15 the bottom wall of the dispenser with a bottom napkin resting on the bottom surface and a top napkin exposed at the dispensing opening. The interfolded napkins are folded at least once to create a leading panel and a trailing panel, the leading panel being placed towards the top of the stack of napkins and the trailing panel being placed towards the bottom of the stack. Except 20 for in the first and the last napkin in the stack, each trailing panel of each napkin is connected by interfolding to the leading panel of the next napkin in the stack. The at least one weight in the dispenser according to the invention is placed on the top napkin in the stack with at least a portion of the leading panel of the top napkin being lifted to a position above the lower panel of the 25 napkin and forming a gripping part of the top napkin. The gripping part of the top napkin is held in the raised position by leaning against a container side wall or against one or more weight that is placed in the container. The napkins may be any kind of household napkins, wipes, paper towels, etc. 30 The material may be a fibrous material of any suitable kind such as cellulose based paper materials, with or without admixture of man-made fibres, binders and fillers. The napkins may comprise only man-made fibres. However, it is WO 2010/132005 PCT/SE2009/050557 9 usually desired that a napkin has some degree of absorbency or that it at least is wettable. If the fibrous material contains a large proportion of fibres of a hydrophobic character implying that the fibres are non-wettable, it may be suitable to treat the material with a wetting agent. Wetting agents and other 5 additives are well known to the person skilled in the art and will not be further discussed herein. The napkins may have any suitable shape and/or size and may be embossed, perforated, printed and dyed if desired. The napkins may be single-ply sheets of material or may comprise two or more plies of the same or different materials. In the stack the napkins are folded at least once 10 in order to obtain an interfolded arrangement with interconnected panels. However, the napkins may be additionally folded in order to reduce their planar size to a practical dimension as is well known in the art. Accordingly, any type of interfolding of the napkins may be used, as known in the art. 15 When more than one weight is used in the dispenser, the leading panel of the top napkin may be positioned between at least two weights which are placed in the container with at least one weight on a lower panel of the top napkin and at least one weight on the leading panel of the top napkin with and edge portion of the leading panel protruding into the dispensing opening between 20 the at least two weights. BRIEF DESCRIPTION OF THE DRAWINGS The invention will in the following be described in detail, with reference to the 25 figures that are shown on the appended drawings. In the drawings: Fig. 1 shows a dispenser arrangement according to the invention with one weight placed therein, 30 Fig. 2 shows a dispenser arrangement according to the invention with two weights placed therein, WO 2010/132005 PCT/SE2009/050557 10 Fig. 3 shows a dispenser arrangement according to the invention with three weights placed therein, Fig. 4 shows a dispenser arrangement according to the 5 invention with four weights placed therein, Fig. 5 shows a dispenser arrangement according to the invention with a soft-walled container, 10 Fig. 6 shows a dispenser arrangement according to the invention with multiple small weights, Fig. 7 shows a container bottom wall, 15 Fig. 8 shows a second container bottom wall, Fig. 9 shows a third container bottom wall, Fig. 10 shows a weight and a device for measuring effective 20 cross-section, Fig. 11 illustrates the projected surface of a weight onto a stack supporting surface; and 25 Fig. 12 illustrates the projected surface of an irregularly shaped weight onto a stack supporting surface. DETAILED DESCRIPTION 30 The dispenser arrangements 1 shown in Figs. 1-4 comprise a container 2, a stack 3 of interfolded napkins and one or more weights 4.

WO 2010/132005 PCT/SE2009/050557 11 The container 2 as shown in Figs. 1-4 is a transparent box of glass or plastic having a rectangular bottom wall 5 on which the stack of interfolded napkins 3 rests and four rectangular side walls 6 arranged perpendicularly from the 5 edges of the bottom wall 5 towards a dispensing opening 7 opposite the bottom wall 5. The bottom wall 5, has a supporting surface 8 on which the stack 3 of interfolded napkins is placed. In the examples shown in Figs. 1-4, the supporting surface 8 generally coincides with the bottom wall 5 of the container. However, this is not a necessary feature of the invention as other 10 shapes of the bottom wall may be used as long as the bottom wall has sufficient size to fully accommodate a planar supporting surface for a stack of interfolded napkins. The material of a container according to the invention needs not be of glass 15 or plastic but may be made of any suitable transparent or non-transparent material such as paper, cardboard, wood, metal, etc. The container may be made by folding of a sheet of material, by moulding, blow-moulding, extrusion, knitting, weaving, plaiting or may be formed from a nonwoven fibrous material.. The container may have solid side walls, as the container 2 20 shown in Figs. 1-4 or may have side walls with openings therein such as a lace-work material or a net. The container material may be a laminate comprising two or more layers of materials and may be made from parts of different materials. The container may be of any colour and may be provided with decorative features such as embossed or engraved structures, surface 25 finishes and patterns and may have printed texts or designs thereon. As used herein, interfolded napkins are sheets of material arranged in a stack of superposed sheets. The interfolded napkins are folded at least once in a first direction which is the interfolding direction to provide each napkin at 30 least with a leading panel and a trailing panel. When more complicated folding arrangements are used, the leading and trailing panels may be separated by one or more intermediate panels. In a simple folding WO 2010/132005 PCT/SE2009/050557 12 arrangement, the leading panel and the trailing panel will be contiguous with the trailing panel following directly after the leading panel. In the stack the napkins are arranged as a linked chain where each trailing panel of each napkin is connected by interfolding to the leading panel of the next napkin in 5 the stack, The only exceptions from this arrangement are found at the first and last napkin in the chain, the first napkin being positioned at the top of the stack and having a free leading panel and the last napkin being at the bottom of the stack and being placed in the container with the trailing panel resting on the supporting surface of the bottom wall. The napkins are interlinked by 10 means of each trailing panel being at least partly overlapped with the leading panel of the subsequent napkin in the stack. In this manner, the individual sheets are held loosely together by means of frictional forces arising between the overlapping parts. The napkins may be single ply or multi ply napkins and may be folded one or more time in a second direction perpendicular to the 15 first, interfolding direction. The weights used in the dispenser arrangement according to the invention may be spherical weights as shown in figs. 1-5. Weights having a non spherical but rounded shape such as egg-shaped weights, or the like may 20 also be used. The weights may be only partially rounded or may have only planar surfaces although non-rounded weights are less preferred as they will have to slide on the napkin surface in order to shift position in the container. Moreover, sharp edges and corners should be avoided as they may catch in the dispensed material and cause the material to wrinkle and tear. 25 The dispenser arrangement shown in Fig. 1 includes only one weight 4 that is shown to be placed on top of the stack 3 of interfolded napkins. Fig. 1 shows how the dispenser arrangement will appear after a napkin has been pulled away from the stack 3 of interfolded napkins and out of the container 2. The 30 weight is seen to be resting on top of the leading panel 9 of the uppermost napkin in the stack with a free end of the leading panel 9 being lifted to a dispensing position above a lower panel 10 of the uppermost napkin and WO 2010/132005 PCT/SE2009/050557 13 leaning against one of the container 2 sidewalls 6. In this manner the leading panel 9 is accessible for gripping and removing of the uppermost napkin in the stack 3. 5 The napkins 11 are dispensed from the dispenser 2 by pulling at the leading panel 9 of the first napkin in the stack 3. In this manner, the first napkin is extracted at the same time as a predetermined part of the leading panel 9 of the subsequent napkin is fed into a dispensing position in the dispenser. The weight 4 counteracts the pulling force and keeps the remaining napkins in the 10 container 2. Pulling at the free napkin end will bring the leading end of the next napkin into a gripping position by partly unfolding the fold 12 between the leading panel 9 and the next panel 13, which may be the trailing panel or an intervening panel between the leading panel 9 and the trailing panel depending on the fold configuration of the napkins 11. In this manner the 15 unfolded part of the napkin will be longer than the length 11 of the corresponding side wall 6, causing the leading panel 9 to lean against the container 2 side walls 6. As previously described, the napkins may be interfolded in numerous 20 different ways. If the napkins are interfolded in simple interlocking V-folds, extraction of the top napkin 11 in the Fig. 1 arrangement will cause the position of the weight 4 to shift from being on top of the leading panel 9 to be below the leading panel 9. In this second configuration the weight 4 will serve to keep the free edge portion of the leading panel 9 in a lifted position, ready 25 for gripping. In the dispensing arrangement shown in Fig. 2, two weights 4 are used. The weights 4 are placed on either side of the free end portion of the leading panel 9 of the uppermost napkin in the stack 3. As the napkins 11 are 30 successively removed from the container 2 by pulling them up between the weights 4, the weights 4 will hold the leading panel 9 that is currently being exposed in a raised gripping position as shown in Fig. 2. This arrangement WO 2010/132005 PCT/SE2009/050557 14 offers the advantage of avoiding the risk that the leading panel 9 is by mistake pushed back in alignment with the upper surface of the stack 3. The grippable portion of the top napkin is held securely in the raised position until it is removed and a subsequent napkin takes it place. However, although 5 preferred, it is not necessary to place one weight 4 on each side of the exposed leading panel. Instead both weights 4 may be placed on the same side of the free edge portion on the leading panel 9 of the uppermost napkin. The resulting dispensing arrangement will work in a manner similar to the one-weight arrangement shown in Fig. 1. 10 The dispensing arrangements shown in figs. 3 and 4 have three and four weights 4, respectively. With increasing number of weights 4, a larger proportion of the supporting surface 8 of the bottom wall 5 will be covered by the weights 4. The larger proportion of the supporting surface 8 that is 15 covered by weights 4, the more securely will the napkins be held back in the container. Then number of weights 4 will also influence the reliability of the dispensing operation, in particular will a large number of weights ensure that the raised leading panel will be held in the raised position. The number of weights may be sufficient to completely cover the surface of the stack. It is 20 also within the scope of the invention to arrange weights in more than one layer on top of the stack. The weights 4, may be arranged in two or more rows with the dispensing of the napkins taking place between two neighbouring rows. In the dispenser 25 shown in Figs. 1-4, six weights 4 of the shown size may be placed in two rows so that the leading panel 9 of the uppermost napkin can be pulled out between the rows. Such arrangement offers a very smooth and reliable operation of the dispenser and ensures that the napkins are held in a planar, non-wrinkled configuration throughout the dispensing operation. 30 The dispenser arrangement 1 shown in Fig. 5 differs from that in Figs. 1-4 in that the container 2 is made of a flexible or bendable material such as a WO 2010/132005 PCT/SE2009/050557 15 wicker basket, a bag of textile, paper or plastic material, etc. As is shown in Fig. 5, edge portions 15 of the side walls 6 that are located at the dispensing opening 7 are folded down on the outside of the container 2. As the number of napkins 11 in the stack 3 diminishes, the height of the container 2 can be 5 adjusted in a corresponding manner by pulling down the edge portions 15 of the side walls 6 even further in the direction shown at the arrow A in Fig. 5. In the Fig. 5 dispenser, four weights 4 are placed in the container 2 on top of the stack 3 of interfolded napkins 11. The weights 4 are shown as spherical 10 weights being arranged in two rows 16' and 16" with two weights in each row 16', 16". A free edge portion of the leading panel 9 of the uppermost napkin 11 in the stack 3 of interfolded napkins protrudes between the two rows 16' 16" of weights 4. Dispensing of the napkins 11 takes place by pulling the protruding napkin in the direction of the arrow B whereby the uppermost 15 napkin is pulled out of the container 2 and the next interfolded napkin in the stack 3 follows up and is brought into the gripping position. Fig. 6 illustrates a dispenser arrangement 1 in which a multitude of small weights 4 is placed on top of the stack 3. The leading panel 9 of the 20 uppermost interfolded napkin 11 is shown protruding between rows 16 of small weights 4. The weights are shown to be arranged in a single layer but arrangements with weights 4 placed in two or more layers are also within the scope of the invention. The shape and size and other properties of the container 2 may be different from that shown in Fig. 6, as previously 25 disclosed. One advantage in covering a major part or the entire uppermost surface of the stack with weights 4 is that the weights 4 protect the surface of the uppermost interfolded napkin 11 from contamination. If the dispenser 30 arrangement is used outdoors, the weights 4 will prohibit the napkins 11 from blowing out of the container 2.

WO 2010/132005 PCT/SE2009/050557 16 It is to be understood that features of the shown examples may be freely combined with each other within the scope of the appended claims. The number of weights, as well as the size, shape and composition of the components may be varied as set out herein. 5 With reference to Figs. 7-9, different shapes of container bottom walls 5 are shown. As can be seen, the bottom walls 5 need not have the same size or shape as the supporting surface 8. In Fig. 7, the bottom wall is shown to be circular while the supporting surface 8 is a square inscribed within the 10 periphery of the bottom wall 5. In Fig. 8, a bottom wall 5 having bi-lobal shape will accommodate a rectangular stack of interfolded napkins on the supporting surface 8 and in Fig. 9, a bottom wall 9 with an irregular periphery will accommodate a square stack of interfolded napkins on the square supporting surface 8. The bottom wall in Fig. 9 may, for instance, be the 15 bottom of a wicker basket. When the bottom wall 5 of the container has larger size than the supporting surface 8, the size of the weight 4 or weights that is chosen should preferably be such that it exceeds the size of the largest gap that is formed between the 20 side walls 6 of the container 2 and the sides of the stack 3 of interfolded napkins 11. By choosing sufficiently large weights 4, it is avoided that the weights 4 fall down between the container side walls 6 and the stack. Fig. 10 shows a weight 4 for a dispenser arrangement according to the 25 invention. The weight 4 in Fig. 10 is irregularly shaped and has a somewhat elongate appearance. The size of the weight is determined as the inner diameter 0 of the smallest measuring tube 18 that will allow the weight 4 to pass therethrough. When measuring irregularly shaped weights, such as the weight 4 shown in Fig. 10, the weight 4 has to be rotated so that the smallest 30 cross-sectional dimension can be determined. This is the effective or critical cross-section of the weight 4. The cross-sectional size of a weight as used herein refers to the effective or critical cross-section.

WO 2010/132005 PCT/SE2009/050557 17 The weights used in the dispenser arrangements according to the invention may have an effective cross-section of from 30 millimeters to 100 millimeters and preferably an effective cross-section of from 40 millimeters to 70 5 millimeters. It may be a concern to use weights of a dimension that would not cause a problem if a small child tries to swallow them. A size of 30 millimeters or above is generally considered to be safe, as it is too large to swallow. Smaller weights of below 5 mm can generally be swallowed without problem. 10 The weights may have a weight of from 20 to 600 grams, preferably of from 50 to 400 grams and most preferably of from 100 to 200 grams. When only one weight is used it will preferably have a weight of from 100-500 grams. When more than one weight is used the combined weight is preferably not 15 more than 1000 grams. If more than one weight is used, the weights may be of different size, but preferably all weights have the same or similar effective cross-section. If the weights are very small, so that passing them through a measuring tube to 20 determine the effective cross-section becomes impractical, the effective cross-section may alternatively be determined by passing them through a sieve. The mesh-size of the sieve then determines the cross-section of the weights. 25 The size of the weights 4 can also be expressed as a size in relation to the portion of the supporting surface 8 or uppermost surface of the stack 3 of interfolded napkins 11 onto which the weight 4 projected when seen at an angle of 900 towards the supporting surface 8. Fig. 11 illustrates the projected area W of a spherical weight 4 and Fig. 12 illustrates the projected 30 area W of an irregularly shaped weight 4. In accordance with the invention the projected area of a single weight 4 is one third of the supporting surface 8 or less.

WO 2010/132005 PCT/SE2009/050557 18 The total projected surface of the one or more weights on the stack supporting surface of the bottom may be at least 20% of the stack supporting surface, preferably at least 40% of the stack supporting surface, more 5 preferably at least 60% of the stack supporting surface and most preferably at least 80% of the stack supporting surface. Although it is sufficient to use a single weight in order for the dispenser to function in accordance with the invention, it may be desired to use multiple weights and even weights placed in two or more layers placed on top of each other. If more than approximately 10 10 weights are used, it may be desirable to use weights of a size that can be poured in and out of the container instead of the weight being handled one at a time. For such embodiments, the weights may have an effective cross section of from 1-30 millimeters, such as from 5-15 millimeters. Suitable multiple weights are peas, pebbles, small glass balls, metal balls, etc. An 15 example of an embodiment using multiple small weights 4 is shown in Fig. 6. The weights may be made from any suitable material or combination of materials such as wood, glass, ceramics, natural and synthetic polymers, stone and metal. Accordingly, the weights may be of glass of plastic and may 20 have a core or an outer layer of a different material. A particularly aesthetically pleasing design is a ball of clear plastic or glass having a decorative or informative object enclosed in the plastic or glass and visible through the plastic or glass. The weights may also be in the form of a shell that may be hollow or may be enclosing an inner object and/or a liquid. When 25 an object or a liquid is placed in the shell the shell may be at least partly transparent in order to provide a visual effect through the shell. An object may be made visible through openings in the shell and may be selected to produce a sound effect as the weight moves during a dispensing operation. 30 The weights may further have a decorative outer surface obtained by selecting a particular colour, surface texture or shine or by means of a three- WO 2010/132005 PCT/SE2009/050557 19 dimensional pattern or a printed design such as an ornamental pattern or a text. The surface of the weights may comprise a sound reducing material in order 5 to avoid rattling of the weights against each other and against the walls of the container. By way of example, the sound reducing material may be a coating of natural or synthetic rubber, a frosting, a surface on the weights made of wood, cork, fibres or similar. 10 In a corresponding manner, the dispenser side walls may comprise a sound reducing material or may be made of an inherently sound reducing material such as textile or rubber. The at least one weight may be a man-made object or may be chosen 15 among suitable natural items which may be perceived as having a decorative effect such as fruit, vegetables, seeds, etc. By way of example it is possible to use suitably sized apples, oranges, pears, lemons, limes, potatoes, chestnuts, eggs, peas, stones, etc. When using natural objects as weights in the dispenser according to the invention, it should be ascertained that the 20 weights are clean and that they are replaced if they go bad after some time.

Claims

1. A dispenser arrangement for interfolded napkins, the dispenser (1) 5 comprising a container (2) having a bottom wall (5) and side walls (6) surrounding the bottom wall (5) and extending from the bottom wall (5) in a direction generally perpendicular thereto and defining a dispensing opening (7) opposite the bottom wall (5), the bottom wall (5) comprising a supporting surface (8) for supporting a rectangular stack (3) of interfolded napkins (11), 10 characterised in that at least one weight (4) is placed in the container (2), the weight (4) having a projected surface on the bottom wall (5) which is less than or equal to one third of the stack supporting surface (8).

2. A dispenser arrangement according to claim 1, wherein the at least one 15 weight (4) has an at least partially curved surface.

3. A dispenser arrangement according to claim 2, wherein the at least one weight (4) has a spherical shape. 20

4. A dispenser arrangement according to one of claims 1-3, wherein the at least one weight (4) has an effective cross-section of at least 30 millimeters.

5. A dispenser arrangement according to claim 4, wherein the at least one weight (4) has an effective cross-section of from 30 millimeters to 100 25 millimeters.

6. A dispenser arrangement according to claim 5, wherein the at least one weight (4) has an effective cross-section of from 40 millimeters to 70 millimeters. 30

7. A dispenser arrangement according to any one of the preceding claims, wherein the at least one weight (4) has a weight of from 20 to 600 grams, WO 2010/132005 PCT/SE2009/050557 21 preferably of from 50 to 400 grams and most preferably of from 70 to 200 grams.

8. A dispenser arrangement according to any one of the preceding claims, 5 wherein more than one weight (4) is placed in the container( 2).

9. A dispenser arrangement according to claim 8, wherein all weights (4) in the container (2) have the same effective cross-section.

10 10. A dispenser arrangement according to claim 8, wherein at least two weights (4) in the container (2) have different effective cross-section.

11. A dispenser arrangement according to claim 8, 9 or 10, wherein all weights (4) in the container (2) have the same shape. 15

12. A dispenser arrangement according to claim 8, 9 or 10, wherein at least two weights (4) in the container (2) have different shapes.

13. A dispenser arrangement according to any one of claims 8-12, wherein 20 the total projected surface of the weights (4) is at least 20% of the stack supporting surface (8), preferably at least 40% of the stack supporting surface (8), more preferably at least 60% of the stack supporting surface (8) and most preferably at least 80% of the stack supporting surface (8). 25

14. A dispenser arrangement according to any one of claims 8-13, wherein the weights are arranged in at least two rows (16; 16', 16") of weights (4) each row (16; 16', 16") comprising at least one weight (4).

15. A dispenser arrangement according to any one of the preceding claims, 30 wherein the weights (4) are made from one or more materials selected from wood, glass, ceramics, natural and synthetic polymers, stone and metal. WO 2010/132005 PCT/SE2009/050557 22

16. A dispenser arrangement according to any one of the preceding claims, wherein the surface of the weights (4) comprises a sound-reducing material.

17. A dispenser arrangement according to any one of the preceding claims, 5 wherein the container side walls (6) comprise a sound reducing material.

18. A dispenser arrangement according to any one of the preceding claims, wherein the at least one weight (4) is a natural item such as fruit, a potato, a chestnut, a boiled egg or a natural stone. 10

19. A dispenser arrangement according to any one of the preceding claims, wherein the container (2) contains a stack (3) of interfolded napkins (11) that is placed on the supporting surface (8) on the bottom wall (5) with a bottom napkin resting with a trailing panel on the bottom surface and a leading panel 15 (9) of a top napkin exposed at the dispensing opening (7), and wherein the at least one weight (4) is placed on the top napkin with the leading panel (9) of the top napkin being lifted to a position above a lower panel of the napkin and forming a gripping part of the top napkin.

20 20. A dispenser arrangement according to claim 19, wherein the leading panel (9) of the top napkin is positioned between at least two weights (4) which are placed in the container (2) with at least one weight (4) on a lower panel (10) of the top napkin and at least one weight (4) on the leading panel (9) of the top napkin with an edge portion of the leading panel (9) protruding 25 into the dispensing opening (7) between the at least two weights (4).