Dispenser for a stack of web material
10398265 · 2019-09-03
Assignee
Inventors
Cpc classification
A47K10/424
HUMAN NECESSITIES
International classification
Abstract
A dispenser for dispensing sheets of web material is provided. The dispenser includes a dispenser housing and storage compartment for receiving a stack of sheets of web material. The housing has a front side, a rear side, upper and lower end portions, and two vertical sides connecting the front and rear sides, the lower end portion forming a dispensing end portion of the dispenser. The storage compartment includes a support arrangement for supporting the stack of sheets of web material at the dispensing end portion of the dispenser. The support arrangement a dispensing opening is arranged in a portion between the front, rear and side portions and an abutment surface to which the stack of sheets of web material can abut.
Claims
1. A dispenser for dispensing sheets of web material, the dispenser extending in a height direction, a width direction and a depth direction, wherein the dispenser comprises a dispenser housing and storage compartment for receiving a stack of sheets of web material, the housing having a front side, a rear side, upper and lower end portions, and two vertical sides connecting the front and rear sides, the lower end portion forming a dispensing end portion of the dispenser, wherein the storage compartment comprises a support arrangement for supporting the stack of sheets of web material at the dispensing end portion of the dispenser, said support arrangement comprising a front portion, a rear portion and a pair of side portions connecting opposite ends of the front portion and the rear portion, wherein a dispensing opening is arranged in a portion between the front, rear and side portions, the dispensing opening of the support arrangement being defined by a surrounding edge formed by the front, rear and side portions, the edge comprising a leading edge portion and a rear edge portion, wherein the leading edge portion forms an upper guiding edge for the sheets of web material during dispensing thereof, wherein the front portion of the support arrangement comprises a front abutment surface for supporting the stack of sheets of web material, the front abutment surface extending upwardly in a direction from the dispensing opening towards the front side of the dispenser, wherein the dispenser further comprises a lower guiding edge for the sheets of web material during dispensing thereof, the lower guiding edge being arranged at a location downwards from the upper guiding edge towards the front side of the dispenser, the lower guiding edge being below the support arrangement, the front abutment surface, the leading edge portion, and the rear edge portion, wherein an HD plane extends in the height direction and the depth direction through the dispenser and the front side, the abutment surface, the lower guiding edge, the leading edge portion, the dispensing opening, the rear edge portion, and the rear side, wherein: a first straight line extends in the HD plane through a lowermost part of the abutment surface and an uppermost part of the abutment surface, wherein the first straight line forms an angle a to a first horizontal line extending in the HD plane from a rear wall of the storage compartment, which angle is from 30 degrees to 60 degrees, a third straight line extends in said HD plane from a lowermost part of the upper guiding edge that defines a limitation for pulling a sheet of web material in contact with the upper guiding edge to a lowermost part of the lower guiding edge that defines a limitation for pulling a straightened sheet of web material in contact with the lower guiding edge and the upper guiding edge, wherein the third straight line forms an angle to the first horizontal line, and a sum of the angles and is from 45 degrees to 120 degrees.
2. The dispenser according to claim 1, wherein the angle is from 40 degrees to 50 degrees.
3. The dispenser according to claim 1, wherein the sum of the angles and is from 60 degrees to 120 degrees.
4. The dispenser according to claim 1, wherein the angle is from 5 to 80 degrees.
5. The dispenser according to claim 1, wherein the front abutment surface has a main plane that extends upwardly in a direction from the dispensing opening towards the front side of the dispenser along the first straight line between the lowermost part and the uppermost part of the front abutment surface, wherein the main plane of the front abutment surface forms the angle a to the first horizontal line.
6. The dispenser according to claim 1, wherein the dispensing opening is arranged in a portion that extends upwardly in an inclined direction from the rear side towards the front side of the dispenser, wherein a fourth straight line extends in said HD plane from a lowermost part of the rear edge portion to the lowermost part of the upper guiding edge that defines the limitation for pulling a sheet of web material in contact with the upper guiding edge, wherein the fourth straight line forms an angle to the first horizontal line that is from 25 degrees to 60 degree.
7. The dispenser according to claim 1, wherein a rim forms part of the upper guiding edge and extends in a downward direction at the dispensing opening, thereby forming a downwardly facing flange of the upper guiding edge that presents a guiding surface portion for the sheets of web material during dispensing thereof.
8. The dispenser according to claim 1, wherein the upper guiding edge is formed by two or more components.
9. The dispenser according to claim 1, wherein the upper guiding edge has a thickness dimension in the HD plane of at least 2.5 mm between the lowermost part of the upper guiding edge and an upper surface portion of upper guiding edge in the HD plane, which upper surface portion is arranged opposite to said lowermost part in the height direction in the HD plane.
10. The dispenser according to claim 9, wherein the thickness dimension is at least 4 mm.
11. The dispenser according to claim 9, wherein the thickness dimension is 30 mm or less.
12. The dispenser according to claim 1, wherein the upper guiding edge has an edge surface forming an upper guiding surface for the sheets of web material during dispensing thereof, wherein the upper guiding surface presents one or more rounded surface portions in the HD plane.
13. The dispenser according to claim 12, wherein a portion of the upper guiding surface facing upwardly in inclined direction towards the rear side is a rounded surface portion.
14. The dispenser according to claim 12, wherein a portion of the upper guiding surface facing downwardly in an inclined direction towards the rear side is a rounded surface portion.
15. The dispenser according to claim 13, wherein the radius of the rounded surface portion is about 0.5 mm to 2 mm.
16. The dispenser according to claim 1, wherein the housing comprises a rear wall, and a front wall or front door.
17. The dispenser according to claim 16, wherein the lower guiding edge is formed by an edge of the lower end portion of the front wall or front door.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
(8) The present disclosure relates a dispenser for storing a stack of sheets of web material such as paper towels and for dispensing the sheets of web material.
(9) In the following, the dispenser will be exemplified by a wall dispenser in a form of a cabinet, in which the stack of sheets of web material in a form of paper towels can be stored in a storage compartment. The paper towel stored in the storage compartment can be dispensed from the storage compartment at a lower end of the dispenser. However, this disclosure should not be construed as limited to the embodiments set forth herein. Other dispenser embodiments and forms of sheets of web material may also be considered within the scope of the appended claims. Disclosed features of example embodiments may be combined as readily understood by one of ordinary skill in the art to which this invention belongs. Like numbers refer to like elements throughout. Well-known functions or constructions will not necessarily be described in detail for brevity and/or clarity.
(10)
(11)
(12) As illustrated in
(13)
(14) As illustrated in
(15) The storage compartment 10 may also comprise front limiting parts opposite to the rear wall 18 so as to provide an additional support a stack of paper towels or the like, if so is required for the particular dispenser and sheets of web material in use. In many cases such front limiting parts are not required for adequately supporting the stack of paper towels.
(16) As illustrated in
(17) The first and second brackets 19, 20 extend along different portions of the storage compartment for receiving the stack. Thereby, they are not necessarily arranged opposite each other, but may be arranged with an offset relative to each other. Thereby, a stack of paper towels or the like may be prevented from falling out of the storage compartment, while at the same time allowing stacks to be loaded into the storage compartment. Further, any interference of a dispenser 1 in the form of a cabinet 2 with a lock 21 of a cabinet front door 13 may be prevented.
(18) As mentioned above, the provision of the brackets 19, 20 or any other front limiting parts is only an optional configuration of a storage compartment so as to provide an additional support a stack of paper towels or the like, if so is required. In many cases such brackets or the like are not required.
(19) The storage compartment 10 may optionally comprise an overfill protection element arranged opposite to the support arrangement as is known in the art (not shown). This element limits the amount of stacks of web material that can be loaded in the storage compartment by limiting the length of the storage compartment 10. Thereby, an excessive loading of the dispenser 1 leading to problems such as bloating of sheets of web material from the dispensing opening and inefficient dispensing of web material can be prevented. In most cases, such a overfill protection element is not required.
(20) As mentioned above, the support arrangement 14 provides a lower support for the stack 11 of sheets of web material, while a reliable dispensing of sheets of material such as paper towels 12 can occur by pulling out single paper towels from the dispensing opening 15 arranged in the support arrangement 14. As best illustrated in
(21) The support arrangement 14 comprises abutment surfaces 28, 29 to which the stack of web material abuts or may abut when received in the storage compartment. Front abutment surfaces 28 are arranged at an inner side of the front portion 22 of the support arrangement 14 for supporting the stack 11 of paper towels and forming a gliding surface 28 for easier dispensing of the paper towels 12.
(22) As mentioned above, both
(23) Each front abutment surface 28 has an uppermost part 30 and a lowermost part 31. The abutment surface forms a main plane that extends upwardly in an inclined direction towards the front side 3 of the dispenser 1 along a first straight line A between the lowermost part 31 and the uppermost part 30 of the abutment surface 28, wherein the main plane forms an angle to a first horizontal line h1 extending in the HD plane from the rear wall 18. In the dispenser illustrated in
(24) As illustrated in
(25) A single front abutment surface 28 may be arranged along a larger section in the width direction W of the support arrangement, e.g. the single abutment surface may extend along a section in the width direction W that constitutes 70% or more of the extension of the support arrangement in the same direction. The single front abutment surface 28 should also have a main plane 30 that extends upwardly in an inclined direction towards the front side 3 of the dispenser so as to provide an angle that has a similar value as discussed above. In the dispenser 1 of the present disclosure, such a single front abutment surface 28 would properly support the abutment against the stack of paper towels, while the dispensing thereof would be easy and safe leading to a minimum of tearing and tabbing of the paper towels during dispensing thereof, even when the paper towel becomes wet.
(26) The length L1 of each front abutment surface 28 or the first straight line A from the lowermost part 31 to the uppermost part 30 of the front abutment surface 28 may vary depending on the dimension the sheets of web material such as paper towels. The length may be from 30 to 60% or 40 to 50% of the largest inner dimension the support arrangement has in the depth direction D in the HD plane between the front portion 22 and the rear wall 18, wherein the largest inner dimension largely corresponds to a dimension that a stack of sheets of web material has in the depth direction, when placed in the storage compartment.
(27) Other abutment surfaces may also be arranged in the support arrangement 14. As illustrated in
(28) The angle and the angle are both preferably chosen such as to optimize the dispensing of the web material. In the illustrated dispenser, the angle is about 31. To this end, it is believed that the angle may advantageously be at least 25, preferably at least 30. The sheets such as paper towels 12 can then be pulled out one sheet at a time, while as a sheet is pulled out by the user a piece of a next sheet is made to partly protrude from the opening 15, such as to be easy to grasp by the user.
(29) As shown in
(30) The dispensing opening 15 formed for dispensing sheets of web material therethrough is arranged in an area between the front portion 22 with the front abutment surface (s) and the rear portion 25, which may also be arranged with the rear abutment surface as described above. A portion of the dispensing opening 15 is arranged close to a lowermost part 31 of a front abutment surface 28 in a downward direction therefrom. The dispensing opening may be arranged within a distance of less than 10 mm or less than 5 mm from the lowermost portion of each front abutment surface. The front abutment surface (s) 28 may extend in the same direction as the upwardly extending section, in which at least part of the dispensing opening 15 is arranged. The lowermost portion of the front abutment surface can therefore extend all the way to the opening 15 and form an edge (not shown).
(31) The dispensing opening 15 of the support arrangement 14 is defined by a surrounding edge 33 formed by the front 22, rear 25 and side portions 26, 27 of the support arrangement 15. The opening 15 may adopt any shape that could support the storage of a stack 11 of paper towels and provide adequately dispensing of paper towels 12, such as a substantially rectangular shape, optionally with rounded ends, or slightly oval shape. As illustrated in
(32) The enlarged center portion 35 also provides an easy access to paper towels 12 that has been interrupted, torn or tabbed during the dispensing of the paper towels 12 from the storage compartment 10. The enlarged center portion 15 could be easily accessed via a recess arranged in a centered position at the lower end portion of the door 13, see
(33) As best seen in
(34) The end portions 34a-b of the opening 15 are formed to actuate on the dispensing movement of paper towels 12 through the opening 15. As illustrated in
(35) As is illustrated in
(36) A third straight line C extends in the HD plane from the lowermost part 40 of the upper guiding edge 36b that defines a limitation for pulling a sheet of web material in contact with the upper guiding edge 36b to a lowermost part 41 of the lower guiding edge 39 that defines a limitation for pulling a straightened sheet of web material in contact with lower guiding edge 39 and the upper guiding edge 36b (see
(37) In the illustrated dispenser, the angle is about 53. To this end, it is believed that the angle may advantageously be from 5 degrees to 80 degrees, preferably from 15 degrees to 70 degrees, more preferably from 30 degrees to 60 degrees.
(38) A sum of the angle related to the extension of the front abutment surface as described above and the angle may be from 45 to 120 degrees. The sum of the angles and may preferably be from 60 degrees to 120 degrees, preferably from 80 degrees to 100 degrees. In the illustrated dispenser, the angle is about 97 degrees.
(39) By amending the angles and/or , the dispensing action of the web material through the opening portions can be optimized to reduce the pull force required to pull the sheets of web material out from the dispenser, in particular along the third straight line C. The pulling direction is thereby limited so as to reduce any force required.
(40) As mentioned above, the dispensing opening is arranged in a portion that extends upwardly in inclined direction from the rear side towards the front side of the dispenser. As illustrated in
(41) The spatial relations of the opening 15 and the edge portions 36b, 37b surrounding it in relation to the lower guiding edge 39 may be illustrated by a fifth straight line F extending through the lowermost part 41 of the lower guiding edge and the lowermost part 42 of the rear edge portion 37b, and which fifth straight line F forms an angle to the first horizontal line h1. In the dispenser as illustrated in
(42)
(43) The provision of the rim 43 provides the lip-shape as has been discussed above. It has shown that the provision of such a rim 43 in combination with the inclined dispensing opening 15 and the inclined front abutment surface 28 reduces the pull force required to pull the paper towels out from the dispenser 1, even in the case when a lower guiding edge 39 is not present for limiting the angle at which paper towels are dispensed (not shown). This arrangement also minimizes any interruption during dispensing caused by, for example, tabbing or tearing of the paper towels.
(44) As best seen in
(45) At least the upper guiding edge 36b has an edge surface forming an upper guiding surface 44 for the sheets of web material during dispensing thereof. The upper guiding surface 44 may present one or more rounded surface portions. A portion of the upper guiding surface 44 facing upwardly in an inclined direction towards the rear wall 18 may have a rounded surface portion 46. A portion of the upper guiding surface portion facing downwardly in an inclined direction towards the rear wall 18 may have a rounded surface portion 47. The radius (R1;R2) of the rounded surface portions may be about 0.5 mm to 2 mm.
(46) The arrangement of a rim 43 and rounded portions 46, 47 provides a smooth gliding surface 44 with hardly any sharp edges that the sheets of web material comes in contact with during dispensing thereof. This contact surface 44 between the leading edge portion 36a-b and the sheets of web material during dispensing thereof is also enlarged by provision of the rim 43 extending downwards from at least the leading edge portion 36a-b, thereby forming a flange or lip presenting a smooth guiding surface 44 for the sheets of web material during dispensing thereof.
(47)
(48) As illustrated in
(49) The stack 11 of paper towels stored in the storage compartment of the dispenser could be formed of a plurality of single folded, c-folded or inter-folded paper towels. As illustrated in
(50) As is also illustrated in
(51) As the skilled person will appreciate, it is intended that the detailed description be regarded as illustrative and that many embodiments and alternatives are possible within the scope of the present disclosure as defined by the appended claims. For example, the dispenser may adopt other shapes than the ones shown in the drawings. Furthermore, the dispenser has been exemplified with paper towels, while other sheets of web material such as tissues, e.g. facial tissues or toilet tissues, or the like may also form part of the disclosure.
EXAMPLES AND TEST METHOD
(52) Aim and Samples
(53) The aim of the test method was to determine a pull force being the maximum force as measured when pulling out a sheet of web material at different pulling directions from a dispenser as disclosed herein. The pull directions tested were straight downward, straightforward in the horizontal direction and at an angled direction from the lower dispensing opening 15 of the dispenser 1. An additional test was made for pulling the sample sheets at the angled direction, in which test an extra weight load of two kilograms was placed on top of the stack of sheets of web material. The angles and other details will be described further below.
(54) The test also included scoring the number of torn and tabbed samples during the test.
(55) Corresponding comparative dispenser was also tested with the same type of sheets of web material.
(56) Apparatus, Samples and Settings
(57) A Force Gauge meter available from Mecmesin was used (Force gauge meter: Mecmesin BFG 50 N).
(58) The clamp used in the force measurement had the size of 10120 mm.
(59) The tested sheets of web material were: Tork Xpress Extra Mjuk Multifold Handduk (Extra Soft Multifold Hand Towel) 2-ply article no 100297 available from SCA Hygiene Products AB.
(60) The storage compartment of each dispenser was filled to the maximum level (top) with a height of the towel stack of about 350 mm.
(61) A dispenser according to the disclosure was tested, wherein angles as defined herein were: =45 degrees, =53 degrees, =32 degrees, =37 degrees, =31 degrees. This dispenser also had a downwardly formed rim at the upper guiding edges (36a-b) forming an extended rounded guiding surface. The T1 dimension was about 4 to 6 mm. The radius (R1; R2) of the rounded edge surfaces was about 1-2 mm.
(62) A dispenser available from SCA Hygiene Products AB was used as a comparative dispenser. The dispenser was Tork Xpress Dispenser Multifold Hand Towel White, article no. 552000. The angles of the comparative dispenser in line with the angle definitions herein were: =25 degrees, =75 degrees, =14 degrees, =48 degrees, and =13 degrees. This dispenser had an upper guiding edge as typically has a lower sharp edge formed in the injection molding tool during forming the support arrangement of the dispenser. The formation of such a sharp edge has been discussed further above.
(63) Test Procedure
(64) For each dispenser, 10 pull tests were performed at pull direction. The maximum forces were recorded and any tabbing and/or tearing of the paper towel samples were also recorded as number of torn towels of the 10 towels pulled out from the tested dispenser.
(65) The dispensers were mounted on a wall in its normal direction of use. The pull force was measured using the force gauge meter (Mecmesin BFG 50 N). The clamp of the force gauge meter was fitted to the gauge meter and the meter was set to register the maximum pull force during the dispensing of a towel. Each dispenser was filled to maximum level as mentioned above. The clamp was attached to the middle of the sheet about 1 cm inwards from the front tail of the towel with the widest clamp portion extending in the width direction W of the towel and relative each dispenser.
(66) The tests were performed with the cabinet door of each dispenser open, if so required or considered convenient.
(67) The force gauge meter was reset to zero before and between each force measurement.
(68) In a first test and for each tested dispenser, a towel was pulled straight downward by moving the Gauge meter at a slow even speed in a downward direction. This was repeated 10 times in the same way, each time with a new towel being dispensed. The maximum pull force and as well as any tabbing or tearing were recorded for each towel pulled out from the dispenser.
(69) In a second test, a similar pull test procedure was performed, with the exception that each towel was pulled out from the dispensing opening in a horizontal pull direction. Accordingly, the towel was pulled out by moving the Gauge meter at a 90-degree angle from the wall towards the test person at a slow even speed. The maximum force and any tabbing or tearing results were recorded.
(70) In a third test, a similar pull test procedure as described above was performed, with the exception that each towel was pulled out from the dispensing opening in a inclined downward direction and out from the wall towards the test person at an angle to the wall of 30 degrees. Accordingly, the towel was pulled out by moving the Gauge meter in the mentioned direction at a slow even speed. The maximum force and any tabbing or tearing results were recorded.
(71) In a fourth test, a similar pull test procedure as described for the third test was performed, with the exception of that an additional weight load of 2 kg was placed on the top of the stack.
(72) Results
(73) The results are reported as the average maximum force in N using two decimals of each test of pulling 10 samples. Furthermore, the number of samples that had undergone tearing and/or tabbing during the test is also given as a torn number, i.e. number of torn or tabbed samples of the 10 samples tested.
EXAMPLES
(74) The results are set forth in Table 1 below.
(75) TABLE-US-00001 TABLE 1 Pull force in N and torn number of samples Dispenser of the disclosure Comparison dispenser Torn number Torn number Pull force (0good; Pull force (0good; Pull angle (N) 10bad) (N) 10bad) First test; 1.74 0 7.32 0 Vertical Second test; 5.65 0 22.84 7 Horizontal Third test; 3.19 0 15.48 0 Angle forward Fourth test; 7.34 0 25.83 7 Angle forward; Added 2 kg weight
(76) The results of a vertical pull test clearly indicate that the relatively steep slope of the front abutment surface indeed lower the pull force required for dispensing a paper towel.
(77) It is also clear that horizontal pull test results show a beneficial effect of arranging the front abutment surface with a steep sloop. The results of the horizontal test are also influenced by having the dispensing opening of the support arrangement arranged in a inclined portion as described herein, as well as by the provision of a downwardly extending rim at the leading edge at the dispensing opening that provides a smooth extended guiding surface for the paper towel during dispensing thereof, even when the towels is dispensed in the horizontal direction.
(78) The angle forward tests aimed at testing the influence of the inclined abutment surface together with the provision of a limited angled pull direction as the guiding edges of the present disclosure provide. Also here the extended upper guiding surface could be considered.
(79) The results with added weight load of 2 kg shows that the pull force required to pull out a paper towel from the dispenser of the present disclosure is low even at extreme weight loads. This is clearly not the case form the comparative dispenser. This pull test for the comparative dispenser also resulted in torn samples, while no samples were torn for the dispenser of the present disclosure.