Separation unit and a dispenser comprising a separation unit

Information

  • Patent Grant
  • 11871877
  • Patent Number
    11,871,877
  • Date Filed
    Tuesday, February 18, 2020
    4 years ago
  • Date Issued
    Tuesday, January 16, 2024
    9 months ago
Abstract
A separation unit for separating a web material along preformed lines of weakness. The separation unit has a width direction and includes a first roller having a rotational axis extending in the width direction and a web width extending in the width direction, and a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in the width direction. The second roller is positioned at a distance from the first roller. Each of the first and the second rollers is provided with a plurality of protrusion elements being spaced along the rotational axes and protruding perpendicular from the axes. Each of the protrusion elements has a maximum width in the width direction, a maximum radial extension from the rotational axes, an inner portion adjacent to the rotational axes, and an outer portion remote from the rotational axes.
Description
TECHNICAL FIELD

The present invention concerns a separation unit for separating a perforated web material such as paper towels, tissue paper or nonwoven material along the perforation lines.


The present invention further relates to a dispenser for a web material, comprising a housing defining a web material reservoir, a dispensing opening, a control unit, and said separation unit.


BACKGROUND

Automatic touchfree dispensers (or “hands-free dispensers”) for paper towels are known on the market. The hands-free dispensers are electronically maneuvered, they store and advance the paper towel with different kinds of control devices, sensors and power sources available. Without touching the dispenser, the user can get a paper towel that is fed automatically by the electronic dispenser. Dispensers like this are commonly used in public lavatories for dispensing paper towels to users. The most common type of a powered, hands-free dispenser is a roll dispenser that users sensors to initiate the mechanisms for advancing the towel such that the subsequent sheet is presented to the user.


Rolls of paper towels are often heavy and there is a friction and resistance for unrolling the paper. Especially when the roll is accelerated there is a high demand of energy. Consequently, there is a need for a strong paper in order to withstand the force necessary to make a full heavy roll to start rotating. A strong paper usually has drawbacks in that the softness of the paper is low. In addition, hands-free dispensers for rolled paper towels demand a large amount of space due to the relatively large volume of the heavy paper rolls.


As an alternative to rolls of paper towels, US2011/0101020, WO 2011/045493, EP 1 830 687 all disclose dispensing units comprising a housing for holding a pile of a continuous length of accordion-like folded web of towels. The dispenser comprises an access opening to the pile, a dispensing opening for the web of towels, a feeding mechanism comprising a member for controlling the dispensing of the web of towels, and a drive unit. Bundles of paper towels with connecting means there between are insertable through the access opening into the housing in the dispensing unit and may be added to the bottom of the pile. The web of towels is dispensable from the upper part of the pile by the feeding mechanism, which positions the web of towels in a starting mode in the dispensing opening. This solution enables feeding of a large amount of wipe products while avoiding the problems relating to the weight of a heavy paper roll or large pile. Preferably, the folded web material comprises a double folded perforated web material, where two perforated webs are interfolded, such that the perforations are arranged in an off-set relationship to each other. A separation unit enables the wipe products to be separated at the lines of weakness when the web is pulled by the user. This feature will allow the feeding of the products to be performed manually by the user, hence avoiding any additional arrangements of the dispensers such as electrical power.


However, to realize the dispenser as described above a number of problems must be solved, including separating the webs correctly along the perforation lines, feeding the next portion of the web to be separated to the separation unit, and presenting the leading end of the web to the next user. Furthermore, separation shall be possible for different types of web materials and web materials having different lengths between the perforation lines.


GB 2 433 248 describes a dispenser for feeding a rolled material comprising two perforated webs, wherein the perforations are in offset relationship. The dispenser comprises two profiled rollers being arranged to form a non-linear nip, applying pressure to the sheet material so that the lines of weakness of the web material would burst. The nip is formed by protrusion elements of different sizes arranged on two rollers. It is shown that the surfaces of each pair of opposing protrusion elements are always in contact with each other.


WO 2011/1149393 describes a dispenser for feeding a rolled tissue or nonwoven material, which may be provided with perforations. A problem with perforated webs is defined, relating to the fact that the web tends to break at every perforation, but that the user might sometimes wish to use a long section of web and sometimes a short section of web. For feeding the web in the dispenser, there is provided a drive roller and an engaging roller. The drive roller and the engaging roller are arranged such that an undulated passage is defined between the protrusion elements on the rollers. It is stated that the undulated passage ensures that the dispensing end of the web is in contact with both the drive roller and the engaging roller in the passage. Also, a pulling force exerted substantially straight out from the dispensing passage is distributed evenly over a central portion of the web, which results in that the web will not break even if perforated, until the user chooses to apply a force sideways. The separation is thus done by the user rather than by the dispenser itself.


It is therefore an object of the present invention to provide a separation unit eliminating the above-mentioned problems.


SUMMARY

According to the present invention, a separation unit for separating a web material along preformed lines of weakness is provided. The separation unit has a width direction and comprises a first roller having a rotational axis extending in the width direction and a web width extending in said width direction, and a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in said width direction. A web width of a roller is a portion of the roller extending along the width direction of the roller. Over the web width of the roller the web material is arranged to pass during dispensing of the web material. The second roller is positioned at a distance from the first roller. The distance between the rollers extends in a direction perpendicular to the width direction. The rollers are thus positioned such that the rotational axes are juxtaposed. The separation unit may also comprise more than two rollers, positioned at a distance from each other, wherein the distance between the rollers extends in a direction perpendicular to the width direction.


Each of said first and said second rollers is provided with a plurality of protrusion elements being spaced along said rotational axes and protruding radially perpendicular from said axes. Each of said protrusion elements has a maximum width in said width direction, a maximum radial extension from said rotational axes, an inner portion adjacent to said rotational axes, and an outer portion remote from said rotational axes. By “maximum width” is meant the maximal extension of the protrusion element in the width direction. By “maximum radial extension” is meant the distance from the rotational axis of the roller to the most remote point on the protrusion element in the radial direction being perpendicular to the width direction of the rotational axis.


The outer portions of the protrusion elements on said first roller are arranged in a staggered relationship with the outer portions of the protrusion elements on the second roller. In other words, the rollers and the protrusion elements are placed such that the protrusion elements on the first roller are positioned in between the protrusion elements on the second roller. Further, the outer portions of the protrusion elements on said first roller are partially overlapping with said outer portions of said protrusion elements on said second roller along an imaginary line extending in a width direction with a radial overlap length, whereby an undulating passage for a web material is formed between said rollers such that the shape of the passage for a web material formed between the protrusion elements is meandering along the imaginary line. For at least one of the rollers, the sum of the maximum widths within the overlap length of all protrusion elements on that roller is between 5-30%, preferably between 12-20% of the web width of that roller. By “maximum width within the overlap length” is meant the maximal extension of the protrusion element in the width direction within the overlap length. Thus, the surface of the web material being in contact with the protrusion elements is relatively small compared to the separation units of the prior art, which optimizes the pinch force acting on the web material and provides an accurate separation.


The overlap between the protrusion elements has a radial overlap length between 2-40 mm, preferably 2-20 mm, more preferably 3-12 mm, or most preferably between 4-10 mm. Surprisingly, it has been found that when the radial overlap length is in the range mentioned above, preformed lines of weakness are correctly and easily broken, thus allowing an accurate and smooth separation of the web material. Without wishing to be bound by a theory, the inventor believes that this effect is achieved due to the “wrinkling” of the web material in the passage. This wrinkling causes local tension in the web material, which causes the material to burst as the preformed lines of weakness pass through the undulating passage. It is worth noting that the pinch force exercised by the separation unit of the present invention is strong enough to break the preformed lines of weakness, and at the same time weak enough not to damage the web material. Such an optimization of the pinch force is achieved due to the unique geometry of the separation unit.


Thus, by using the separation unit according to the present invention, the risk that any given preformed line of weakness would break before that particular line of weakness has reached the separation unit is eliminated. At the same time, the separation unit according to the present invention facilitates the separation of the web material such that the force needed for separation of the web material is minimized.


The web material mentioned above may in the context of the present invention be tissue paper, such as facial tissue, toilet tissue or paper towels, or may be nonwoven material. As would be understood by the person skilled in the art, the pinch force needed for accurate separation of the web material may need to be altered depending on the type of the web material. In order to provide the separation unit according to the present invention being usable with different types of web material, the distance between the rotational axes of the first and second rollers may be adjustable, thus enabling the radial overlap length in the undulating passage to be variable. This feature of the separation unit makes it very flexible and adaptive.


The protrusion elements of the separation unit according to the present invention may be of any suitable shape, as far as the radial overlap length is within the range specified above. Thus, the protrusion elements may be in the form of disc elements, propeller-shaped elements, cylinder elements or the like. The cross-section in a radial plane of the protrusion elements may be rounded at the outer periphery of the protrusion element. The cross-section at the outer periphery of the protrusion element may also be rectangular, triangular, wavy or the like. The maximum radial extensions of said protrusion elements may be between 5-50 mm, preferably 5-30 mm, more preferably 10-20 mm, or most preferably 12-18 mm.


The protrusion elements may be made of any suitable material that provides friction between the outer portion of the protrusion element and the web material. Thus, the protrusion elements may be made of rubber or another elastomeric material.


The protrusion elements may be covered by a sleeve or ring of an elastomeric material encircling the outer periphery of each individual protrusion element. The elastomeric material may be glued, vulcanized or simply stretched around the outer portion of the protrusion element.


The maximum widths of said protrusion elements may be between 4-20 mm, preferably 5-10 mm, most preferably 6-8 mm. As mentioned above, the maximum width of each protrusion element is determined by the dimension of the widest part of the protrusion element. The width of the protrusion element may be same or different along the radial direction. Thus, if the width of the protrusion element is the same along the radial direction, the maximum width within the overlap length is equal to the maximum width of the protrusion element. On the other hand, if the width of the protrusion element is different along the radial direction, the maximum width within the overlap length may be smaller or greater than the maximum width of the protrusion element.


The maximum radial extensions of the protrusion elements may be equal to or greater than the maximum widths of said protrusion elements. The more the difference between the maximum radial extensions and the maximum widths of the protrusion elements, the greater the undulation amplitude of the passage formed between the protrusion elements. This, in turn, means that with increasing undulation amplitude the pinch force increases.


The separation unit according to the present invention may be formed such that the protrusion elements are formed integral with the rollers, or such that the protrusion elements are separate units attached to the roller.


The spacing of the protrusion elements may be the same along the width direction of the first and/or said second roller. Also, the spacing of the protrusion elements may vary along the width direction of the first and/or said second roller. For instance, one of said first and said second rollers may comprise at least a first, a second and a third protrusion element, wherein the spacing between said first and said second protrusion elements along the width direction of said first and/or said second roller differs from the spacing between said second and said third protrusion elements along the width direction of said first and/or said second roller. The protrusion elements may be sparsely arranged in the central portion of the rollers, and concentrated in the peripheral portions of the rollers. If such an arrangement is used, a wrinkleless portion of the web material in the central portion of the roller may be more suitable for gripping by the user when the web material is to be separated.


As mentioned above, the distance between the rotational axes of the first and second rollers may be adjustable, thus enabling the radial overlap length in the undulating passage to be variable. Thus, the rollers may be arranged such that the distance between the rollers is manually changed depending on the type of the web material. Another alternative is that the distance between the rollers is automatically adjustable to provide an optimal separation. Such an automatic adjustment may be enabled by using rollers arranged with a biasing means. The biasing means may be a spring suspension, or suspension acting by gravity. Biasing means facilitate pulling the material through the separation unit when the dispenser is being loaded with a web material. Also, biasing means provides a flexible separation unit enabling a smooth passage of parts of the web material having thickness greater than the web material itself. Such parts may for instance be joints between two bundles of the web material. The distance between said rotational axes of said first and said second rollers may be between 8-100 mm. As will be understood by the person skilled in the art, the distance between the rotational axes may be chosen such that an undulating passage providing an optimal pinch force is formed depending on the type of the web material.


The separation unit according to the present invention may comprise protrusion elements having the same maximum radial extensions and same maximum widths. In other words, all the protrusion elements may be equally sized. The separation unit according to the present invention may comprise protrusion elements having different maximum radial extensions and/or different maximum widths, i.e. the separation unit comprises protrusion elements of different sizes. Thus, a plurality of radial overlaps having different lengths will be formed for every given distance between the rotational axes. It has been found that the performance of the separation unit according to the present invention is improved when the spacing between each two protrusion elements is equal to or greater than the maximum width of each protrusion element. Such a relationship between the spacing between the protrusion elements and the maximum widths of the protrusion elements provides for a scarce distribution of the protrusion elements along the rotational axes, which optimizes the pinch force affecting the web material, and facilitates separation of the web material at the desired position.


The separation unit according to the present invention may comprise protrusion elements wherein the maximum radial extensions of the protrusion elements are equal to or greater than said maximum widths of said protrusion elements. This means that the protrusion elements may be relatively large and thin, which contributes to an optimal pinch force of the web material.


The separation unit according to the present invention may be placed in a dispenser. Such a dispenser may comprise a housing defining a web material reservoir, a dispensing opening, a control unit for determining a correct tension and path of the web material, and a separation unit according to the present invention. The dispenser may further comprise a web material contained inside the housing. The web material comprises preformed lines of weakness and may be Z-folded to form a stack, or being in the form of a roll.


A leading portion of the web material is configured to be supported in a dispensing path from the reservoir to the dispensing opening. The leading portion may extend upwardly from the top of the said stack of said web material, or from the peripheral or central part of the roll.


The preformed lines of weakness may be perforation lines formed by alternating bonds and slots and having the perforation strength between 20-80 N/m, preferably 30-45 N/m measured using SS-EN ISO 12625-4:2005. This perforation strength may for instance be achieved by using perforation lines wherein the total bond length/(the total bond length+total slot length) is between 4% and 10%. It is desired to form perforation lines which are strong enough to enable feeding of the web material, but which are also weak enough to enable separation of the sheets along the perforation lines using the separation unit of the present invention. In this context, it is known that also other parameters may influence the strength of the perforation line, such as the paper quality, and the size, shape and distribution of the slots and bonds. However, it is believed that the above-mentioned measure is useful for guiding the person skilled in the art when selecting suitable perforation lines.


The web material may be a two-layer structure, i.e. the web material may comprise at least a first web layer divided into sheet products defined between longitudinally separated preformed lines of weakness extending across the first layer; and at least a second web layer divided into sheet products defined between longitudinally separated lines of weakness extending across the second web layer. The web layers may be interfolded so that the lines of weakness of the first web layer are offset from the lines of weakness of the second web layer in a longitudinal direction.


Further, the dispenser may comprise a feeding mechanism, i.e. a motor to advance a web through the dispenser.





BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described by way of example with reference to the accompanying drawings, of which: FIGS. 1a, 1b and 1c show a separation unit according to the present invention; FIG. 2 shows the separation unit according to the present invention seen in the width direction; FIG. 3 shows protrusion elements having different dimensions and differently shaped outer portions; FIGS. 4 and 5 show a dispenser comprising the separation unit according to the present invention;



FIG. 6 shows a web material with a first web layer divided into sheet products defined between longitudinally separated preformed lines of weakness extending across the first layer and a second web layer divided into sheet products defined between longitudinally separated lines of weakness extending across the second web layer. The web layers are interfolded so that the lines of weakness of the first web layer are offset from the lines of weakness of the second web layer in a longitudinal direction.





DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS


FIGS. 1a and 1b show a separation unit 1 according to the present invention. The separation unit 1 comprises a first roller 2 and a second roller 3, each extending in a width direction and comprising plurality of protrusion elements 4 being spaced along the rollers 2, 3 and protruding perpendicular from the rollers 2, 3. The rollers 2, 3 are positioned at a distance d1 from each other, wherein the distance d1 is extending in a direction perpendicular to the width direction of the rollers 2, 3. In the embodiment shown in FIG. 1a, the first roller 2 comprises six protrusion elements 4, and the second roller 3 comprises four protrusion elements 4. The separation unit 1 has a web width Ww (FIG. 1c). Each of the protrusion elements 4 has a maximum width Wpe in the width direction and a maximum radial extension r from the rollers 2, 3. In the embodiment shown in FIG. 1a, the maximum widths Wpe and the maximum radial extensions r of all the protrusion elements 4 are the same. Each protrusion element has an inner portion 6 adjacent to the rollers 2, 3, and an outer portion 5 remote from the rollers 2, 3, wherein the outer portions 5 of the protrusion elements 4 on the first roller 2 are arranged in a staggered relationship with the outer portions 5 of the protrusion elements 4 on the second roller 3, which is best seen in FIG. 2. The outer portions 5 of the protrusion elements 4 have a slightly curved shape. The outer portions 5 of the protrusion elements 4 on the first roller 2 are partially overlapping with the outer portions 5 of the protrusion elements 4 on the second roller 3 with a radial 15 overlap length L. Such a configuration of the protrusion elements forms an undulating passage for a web material between the rollers 2, 3 (FIG. 1c).


In the embodiment shown in FIGS. 1a and 1b, no protrusion elements are placed in the central portion C of the rollers 2, 3. Such an arrangement of the protrusion elements allows the user to easily access the leading end of the web material 16 in the central portion C of the separation unit 1 (FIG. 1c).


As may be seen in FIGS. 1a and 1b, the spacing d2 between each two protrusion elements 4 is equal to or greater than the maximum width w of each protrusion element 4. Such a configuration enables the protrusion elements 4 to be relatively scarcely distributed, which provides an optimal pinch force.


Another advantageous feature of the separation unit according to the present invention is that the maximum radial extensions r of the protrusion elements are equal to or greater than the maximum widths Wpe of the protrusion elements. As may be seen in FIGS. 1a and 1b, the protrusion elements are formed as relatively large and thin discs, which optimizes the pinch force.



FIG. 2 illustrates the separation unit 1 seen in the width direction. It is clearly shown that the outer portions 5 of the protrusion elements 4 on the first roller 2 overlap with the outer portions 5 of the protrusion elements 4 on the second roller 3.


As previously mentioned, the protrusion elements 4 may have different maximum widths Wpe and maximum radial extension r. In FIG. 3, protrusion elements having different maximum widths Wpe and different maximum radial extensions r are shown.


As mentioned above, the shape of the outer portions 5 of the protrusion elements 4 may vary. In FIG. 3, four other possible shapes of the outer portions 5 are depicted. Thus, the outer portions may have smooth surface, or may be provided with ribbed surface. As will be understood by the person skilled in the art, if the surfaces of the outer portions of the protrusion elements are ribbed, the friction between the web material and the outer surfaces of the protrusion elements, and thus the pinch force, is greater compared to the friction provided by smooth surfaces.



FIG. 4 schematically shows a dispenser 7 with a separation unit 1 according to the present invention. The dispenser 7 has an outer front wall 8, two outer side walls 9 and a housing 10. The housing 10 is intended for holding a pile of a continuous length of accordion-like folded web of towels of tissue paper or nonwoven comprising bundles 12 of a continuous length of accordion-like folded web of towels of tissue paper or nonwoven. The bundles 12 comprise connecting means 13a, 13b between the bundles 12. The dispenser 7 comprises a guiding element 14 in the form of a curved plate which extends over a segment of the web-supporting roller surface 15. The at least one web 16 is arranged to be fed through the guiding element 14 when the dispenser 7 is in use, and at least one part of the guiding element 14 is arranged to bear against the web 16. The guiding element 14 thereby holds the at least one web 16 in place on the roller surface 15 so that it does not move backwards or sidewards during the use of the dispenser, or in case of web-breakage.


The unit subsequent to the guiding element 14 is separation unit 1 described above. The separation unit 1 provides an optimal pinch force acting on the web material 16, and allows the web material 16 to be separated at the desired position. The separation unit 1 depicted in FIG. 4 is configured such that both of the rollers 2, 3 are positioned inside the housing 10. It is also conceivable that one of the rotational axes is located in the outer front wall 8, such that when the outer front wall 8 is opened, the pinch force caused by the separation unit 1 is released.


The dispenser 7 illustrated in FIG. 4 comprises a stack of interfolded webs 16, whereby the dispenser 7 is configured so that a preceding stack of interfolded webs in the housing 10 has to be lifted to position a new, succeeding stack in the housing 10 underneath the preceding stack to refill the dispenser 7. Stacks of interfolded webs in the dispenser 7 may be interconnected via connecting means 13a, 13b, such as adhesive, adhesive tape or mechanical fasteners, such as hook and loop fasteners, at the bottom and/or top of each of the refill stacks. The web 16 is arranged to be fed upwards within the housing 10, around the roller 15 located at the top of the dispenser 7 and downwards towards the separation unit 1 and the dispensing opening 17.


In FIG. 5 the dispenser 7 is depicted in the state when no web material 16 is loaded. The separation unit 1 is positioned within the housing 10 at the same level as the dispensing opening 17, such that the perforated web 16 is separated along the preformed lines of weakness at the moment of dispensing with almost no effort from the user's side.


It should be noted that the dispenser 7 according to the present invention may be any type of automatic or non-automatic dispenser for dispensing at least one web, i.e. a plurality of webs may be dispensed simultaneously, or a plurality of different webs may be dispensed by the dispenser 7 one at a time.


The dispenser 7 is a free-standing, but the dispenser may also be mounted on any suitable object in any suitable manner. Furthermore, a dispenser housing 10 of a dispenser according to the present invention need not necessarily contain an entire web 16 that is to be dispensed by the dispenser 7. At least one web 16 may for example be stored outside the housing 10 and merely be fed through the housing 10 when the dispenser 7 is in use.



FIG. 6 shows a web material 616 with a first web layer 620 divided into sheet products defined between longitudinally separated preformed lines of weakness 621 extending across the first layer 620; and at least a second web layer 625 divided into sheet products defined between longitudinally separated lines of weakness 626 extending across the second web layer 625. The web layers 620, 625 may be interfolded so that the lines of weakness 621 of the first web layer 620 are offset from the lines of weakness 626 of the second web layer 625 in a longitudinal direction.


Although the present invention has been described with reference to various embodiments, those skilled in the art will recognize that changes may be made without departing from the scope of the invention. It is intended that the detailed description be regarded as illustrative and that the appended claims including all the equivalents are intended to define the scope of the invention.


EMBODIMENTS





    • 1. A separation unit for separating a web material along preformed lines of weakness, said separation unit having a width direction and comprising a first roller having a rotational axis extending in said width direction and a web width extending in said width direction, and a second roller having a rotational axis extending parallel with said rotational axis of said first roller and a web width extending in said width direction, said second roller being positioned at a distance from said first roller, said distance extending in a direction perpendicular to said width direction, wherein each of said first and said second rollers is provided with a plurality of protrusion elements being spaced along said rotational axes and protruding perpendicularly from said axes, wherein each of said protrusion elements has a maximum width in said width direction, a maximum radial extension from said rotational axes, an inner portion adjacent to said rotational axes, and an outer portion remote from said rotational axes, wherein said outer portions of said protrusion elements on said first roller are arranged in a staggered relationship with said outer portions of said protrusion elements on said second roller, and wherein said outer portions of said protrusion elements on said first roller are partially overlapping with said outer portions of said protrusion elements on said second roller with a radial overlap length, thus forming an undulating passage for a web material between said rollers, characterized in that each protrusion element has a maximum width along the width direction within the overlap length, and the sum of said maximum widths within the overlap length of all protrusion elements on one of said rollers is between 5-30%, preferably 12-20% of said web width of that roller.

    • 2. The separation unit according to embodiment 1, wherein said protrusion elements have different maximum radial extensions and/or different maximum widths.

    • 3. The separation unit according to embodiment 1, wherein said protrusion elements have same maximum radial extensions and same maximum widths.

    • 4. The separation unit according to anyone of the preceding embodiments, wherein said spacing between each two protrusion elements is equal to or greater than said maximum width of each protrusion element.

    • 5. The separation unit according to anyone of the preceding embodiments, wherein said maximum radial extensions of said protrusion elements are equal to or greater than said maximum widths of said protrusion elements.

    • 6. The separation unit according to anyone of the preceding embodiments, wherein said maximum radial extensions of said protrusion elements are between 5-50 mm, preferably 5-30 mm, more preferably 10-20 mm, or most preferably 12-18 mm.

    • 7. The separation unit according to anyone of the preceding embodiments, wherein the maximum widths of said protrusion elements are between 4-20 mm, preferably 5-10 mm, most preferably 6-8 mm.

    • 8. The separation unit according to anyone of the preceding embodiments, wherein said protrusion elements are arranged with same spacing in different parts of said first and/or said second roller.

    • 9. The separation unit according to embodiments 1-7, wherein at least one of said first and said second rollers comprises at least a first, a second and a third protrusion element, wherein the spacing between said first and said second protrusion elements along the width direction of said first and/or said second roller differs from the spacing between said second and said third protrusion elements along the width direction of said first and/or said second roller.

    • 10. The separation unit according to embodiments 1-7, wherein each of said first and said second rollers has a central portion and outer portions in said width direction, and wherein said spacing between said protrusion elements is greater in said central portion than in said peripheral portions.

    • 11. The separation unit according to anyone of the preceding embodiments, wherein said radial overlap length is between 2-40 mm, preferably 2-20 mm, more preferably 3-12 mm, or most preferably between 4-10 mm.

    • 12. The separation unit according to anyone of the preceding embodiments, wherein said distance between said rotational axes of said first and said second rollers is between 8-100 mm.

    • 13. The separation unit according to anyone of the preceding embodiments, wherein said protrusion elements are formed integral with said first and/or second roller.

    • 14. The separation unit according to embodiments 1-13, wherein said protrusion elements are separate units attached to said first and/or second roller.

    • 15. The separation unit according to anyone of the preceding embodiments, wherein said distance between said rotational axes of said first and said second rollers is adjustable.

    • 16. The separation unit according to embodiment 15, wherein said adjustment is enabled by biasing means.

    • 17. The separation unit according to anyone of the preceding embodiments, wherein said protrusion elements are disc elements.

    • 18. The separation unit according to anyone of the preceding embodiments, wherein said outer portions of said protrusion elements have ribbed surfaces.

    • 19. A dispenser for a web material, comprising

    • a housing defining a web material reservoir;

    • a dispensing opening;

    • a control unit;

    • a separation unit according to anyone of the embodiments 1-18.

    • 20. The dispenser according to embodiment 19 for containing a web material comprising preformed lines of weakness, said web material being Z-folded to form a stack.

    • 21. The dispenser according to embodiment 19 for containing a web material comprising preformed lines of weakness, said web material being in the form of a roll.

    • 22. The dispenser according to anyone of embodiments 19-21, wherein the dispenser further comprises a feeding mechanism.

    • 23. The dispenser according to anyone of embodiments 19-22, wherein said web material is contained in said reservoir, and wherein a leading portion of said web material is supported in a dispensing path from said reservoir to said dispensing opening.

    • 24. The dispenser according to embodiment 23, wherein said leading portion extends upwardly from the top of the said stack of said web material.

    • 25. The dispenser according to anyone of embodiments 19-24, wherein said preformed lines of weakness are perforation lines formed by alternating bonds and slots and having the perforation strength between 20-80 N/m, preferably 30-45 N/m.

    • 26. The dispenser according to anyone of embodiments 19-25, wherein said web material comprises at least a first layer divided into sheet products defined between longitudinally separated lines of weakness extending across the first layer; and at least a second elongate web divided into sheet products defined between longitudinally separated lines of weakness extending across the second layer; wherein the webs are interfolded so that the lines of weakness of the first web are offset from the lines of weakness of the second web in a longitudinal direction of the first web.




Claims
  • 1. A method of loading a dispenser with a stack of a Z-folded web of paper having a plurality of longitudinally spaced preformed lines of weakness, the method comprising: providing or obtaining a dispenser having a separation unit, wherein the separation unit comprises: a first device having an axis extending in a width directions and a web width extending in said width direction, anda second device having an axis extending parallel with said axis of said first device, said second device being positioned at a distance from said first device, and a web width extending in said width direction, said distance extending in a direction perpendicular to said width direction,wherein each of said first and said second devices is provided with a plurality of protrusion elements being spaced along said axes and protruding perpendicularly from said axes,wherein each of said protrusion elements has a maximum width in said width direction, a maximum extension from said axes, an inner portion adjacent to said axes, and an outer portion remote from said axes,wherein said outer portions of said protrusion elements on said first device are arranged in a staggered relationship with said outer portions of said protrusion elements on said second device, andwherein said outer portions of said protrusion elements on said first device are partially overlapping with said outer portions of said protrusion elements on said second device with a overlap length, thus forming an undulating passage for a web material between said devices,wherein each protrusion element has a maximum width along the width direction within the overlap length, and the sum of said maximum widths within the overlap length of all protrusion elements on one of said devices is between 5-30% of said web width of that device,wherein the separation unit is configured to create a pinch force on the web material, wherein the separation of the web material along a preformed line of weakness comprises passage through the separation unit and the pinch force, and wherein the separation unit is configured to separate the web of paper along a preformed line of weakness with the pinch force;inserting a bundle in the form of the stack of the Z-folded web of paper in pre-folded form through a bottom section of the dispenser, the dispenser comprising a plurality of walls defining a reservoir for holding one or more bundles of pre-folded Z-folded web, and a dispensing opening, the dispenser extending vertically along a longitudinal dimension and horizontally along a width dimension; andwherein said Z-folded web of paper comprises at least a first web divided into sheet products defined between longitudinally separated lines of weakness extending across the first web; and at least a second web divided into sheet products defined between longitudinally separated lines of weakness extending across the second web; wherein the webs are interfolded so that the lines of weakness of the first web are offset from the lines of weakness of the second web in a longitudinal direction of the first web,wherein a sheet product from only one web is configured to be dispensed at a time.
  • 2. The method of claim 1, wherein the bundle is the first of at least two bundles of Z-folded web in the reservoir of the dispenser, and wherein each of the at least two bundles has a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method further comprising: inserting a further bundle of Z-folded web in pre-folded form through the bottom section of the dispenser; andconnecting the first bundle and the further bundle to one another by engaging the connector of the further bundle with the first bundle.
  • 3. The method of claim 1, wherein the bundle is the first of at least two bundles of Z-folded web in pre-folded form in the reservoir of the dispenser, and wherein each of the at least two bundles has a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method further comprising: inserting a further bundle of Z-folded web through the bottom section of the dispenser; andconnecting the first bundle and the further bundle to one another by engaging the connector of the first bundle with the further bundle.
  • 4. The method of claim 1, wherein the bundle is the first of at least two bundles of Z-folded web in pre-folded form in the reservoir of the dispenser, and wherein each of the at least two bundles has a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method further comprising: inserting a further bundle of Z-folded web through the bottom section of the dispenser; andconnecting the first bundle and the further bundle to one another by engaging the connector of the first bundle with the connector of the further bundle.
  • 5. The method of claim 1, further comprising: guiding a leading portion of the Z-folded web upwardly toward a support roller adjacent a top wall of the dispenser;guiding the leading portion of the Z-folded web over the support roller and downward toward a separation unit of the dispenser comprising a first roller and a second roller, the first roller comprising a first plurality of discs spaced apart from one another, the second roller comprising a second plurality of discs spaced apart from one another, the first plurality of discs being offset in the width dimension with respect to the second plurality of discs, the first plurality of discs radially overlapping the second plurality of discs so as to define an undulatory path for the Z-folded web in the width dimension;guiding the leading portion of the Z-folded web between the first plurality of discs and the second plurality of discs; andextending the leading portion of the Z-folded web through the dispensing opening toward an exterior of the dispenser, andwherein the leading portion of the Z-folded web extends across a width of the dispensing opening without folding in a longitudinal direction of the Z-folded web due to the width of the dispensing opening.
  • 6. The method of claim 5, wherein guiding the leading portion of the Z-folded web between the first plurality of discs and the second plurality of discs includes guiding the leading portion of the Z-folded web between the first plurality of discs and the second plurality of discs having a radial overlap in the range of about 2 to about 40 mm.
  • 7. The method of claim 5, further comprising exerting a pulling force on the leading portion of the Z-folded web through the dispensing opening, the pulling force being effective to separate an individual sheet of paper from a remainder of the Z-folded web.
  • 8. The method of claim 1, wherein the separation unit is configured to create a pinch force on the web of paper.
  • 9. The method of claim 1, wherein the separation unit is configured to separate the web of paper along a preformed line of weakness without a sideways force.
  • 10. A method of refilling a dispenser with a pre-folded refill bundle in the form of a stack of a Z-folded web of paper having a plurality of longitudinally spaced preformed lines of weakness, the method comprising: providing or obtaining a dispenser having a separation unit, wherein the separation unit comprises: a first device having an axis extending in a width directions and a web width extending in said width direction, anda second device having an axis extending parallel with said axis of said first device, said second device being positioned at a distance from said first device, and a web width extending in said width direction, said distance extending in a direction perpendicular to said width direction,wherein each of said first and said second devices is provided with a plurality of protrusion elements being spaced along said axes and protruding perpendicularly from said axes,wherein each of said protrusion elements has a maximum width in said width direction, a maximum extension from said axes, an inner portion adjacent to said axes, and an outer portion remote from said axes,wherein said outer portions of said protrusion elements on said first device are arranged in a staggered relationship with said outer portions of said protrusion elements on said second device, andwherein said outer portions of said protrusion elements on said first device are partially overlapping with said outer portions of said protrusion elements on said second device with a overlap length, thus forming an undulating passage for a web material between said devices,wherein each protrusion element has a maximum width along the width direction within the overlap length, and the sum of said maximum widths within the overlap length of all protrusion elements on one of said devices is between 5-30% of said web width of that device,wherein the separation unit is configured to create a pinch force on the web material, wherein the separation of the web material along a preformed line of weakness comprises passage through the separation unit and the pinch force, and wherein the separation unit is configured to separate the web of paper along a preformed line of weakness with the pinch force;inserting the refill bundle of the Z-folded web of paper through a bottom section of the dispenser comprising a plurality of walls defining a reservoir for holding one or more pre-folded bundles of Z-folded web, and a dispensing opening, the dispenser extending vertically along a longitudinal dimension and horizontally along a width dimension; andconnecting the refill bundle of the Z-folded web of paper to an existing bundle of a Z- folded web of paper already in the reservoir, andwherein said Z-folded web of paper comprises at least a first web divided into sheet products defined between longitudinally separated lines of weakness extending across the first web; and at least a second web divided into sheet products defined between longitudinally separated lines of weakness extending across the second web; wherein the webs are interfolded so that the lines of weakness of the first web are offset from the lines of weakness of the second web in a longitudinal direction of the first web,wherein a sheet product from only one web is configured to be dispensed at a time.
  • 11. The method of claim 10, wherein the radial overlap length is about 2 to about 40 mm.
  • 12. The method of claim 10, wherein the first bundle and the refill bundle each have a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method comprising: connecting the refill bundle and the existing bundle to one another by engaging the connector of the existing bundle with the refill bundle.
  • 13. The method of claim 10, wherein the first bundle and the refill bundle each have a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method comprising: connecting the refill bundle and the existing bundle to one another by engaging the connector of the refill bundle with the connector of the existing bundle.
  • 14. The method of claim 10, wherein the first bundle and the refill bundle each have a connector on an end face thereof configured to attach a respective bundle to an adjacent bundle, the method comprising: connecting the refill bundle and the existing bundle to one another by engaging the connector of the refill bundle with the existing bundle.
  • 15. The method of claim 10, wherein the existing bundle has: a portion guided upwardly over a support roller adjacent a top wall of the dispenser and downward to a separation unit of the dispenser comprising a first roller and a second roller, the first roller comprising a first plurality of discs spaced apart from one another, the second roller comprising a second plurality of discs spaced apart from one another, the first plurality of discs being offset in the width dimension with respect to the second plurality of discs, the first plurality of discs radially overlapping the second plurality of discs, the portion being guided between the first plurality of discs and the second plurality of discs so that the portion has an undulatory path in the width dimension, and extended through the dispensing opening toward an exterior of the dispenser,wherein, upon connecting, a leading portion of the refill bundle is configured to be:guided upwardly toward the support roller adjacent the top wall of the dispenser;guided over the support roller and downward toward the separation unit of the dispenser;guided between the first plurality of discs and the second plurality of discs to thereby cause the first roller and the second roller to rotate; andextended through the dispensing opening toward an exterior of the dispenser, wherein the leading portion of the Z-folded web is configured to be extended across a width of the dispensing opening without folding in a longitudinal direction of the Z-folded web due to the width of the dispensing opening.
  • 16. The method of claim 10, wherein the separation unit is configured to separate the web of paper along a preformed line of weakness without a sideways force.
  • 17. The method of claim 10, wherein the separation unit is configured to create a pinch force on the web of paper.
CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. application Ser. No. 15/964,934, filed on Apr. 27, 2018, which is a continuation of U.S. application Ser. No. 14/438,442, filed on Apr. 24, 2015, now U.S. Pat. No. 9,999,325, which is a U.S. national stage of International Application No. PCT/SE2012/051160, filed on Oct. 26, 2012. The entire contents of each of U.S. application Ser. No. 14/438,442 and International Application No. PCT/SE2012/051160 are hereby incorporated herein by reference in their entirety.

US Referenced Citations (154)
Number Name Date Kind
400913 Hicks Apr 1889 A
511983 Wheeler Jan 1894 A
804306 Fonda Nov 1905 A
804307 Fonda Nov 1905 A
1658608 Marcuse Feb 1928 A
1780275 Randerson Nov 1930 A
2347823 Gootman et al. May 1944 A
2809082 Marcuse Oct 1957 A
2886226 Batlas et al. May 1959 A
2974839 Batlas et al. Mar 1961 A
3276636 Johnson, Jr. Oct 1966 A
3653539 Stageberg Apr 1972 A
3770172 Nystrand et al. Nov 1973 A
3826548 Schnyder et al. Jul 1974 A
3877576 Kishi Apr 1975 A
3991998 Banz et al. Nov 1976 A
4089378 Suzuki et al. May 1978 A
4106684 Hartbauer Aug 1978 A
4148442 Baumann et al. Apr 1979 A
4276797 Baumann et al. Jul 1981 A
4288068 Hashimoto et al. Sep 1981 A
4358169 Filipowicz Nov 1982 A
4494747 Graef Jan 1985 A
4505381 Major Mar 1985 A
4516711 Barege May 1985 A
4614632 Kezuka Sep 1986 A
4677283 Lewis Jun 1987 A
4684119 Lane Aug 1987 A
4697656 De Oct 1987 A
4779861 Ozawa Oct 1988 A
4818042 Arabian et al. Apr 1989 A
4861013 Shibata Aug 1989 A
5033620 De Luca Jul 1991 A
5061232 Bloch Oct 1991 A
5092573 Abreu Mar 1992 A
5098078 Nakanishi Mar 1992 A
5152522 Yamashita Oct 1992 A
5190514 Galvanauskas Mar 1993 A
5203846 Kuhns et al. Apr 1993 A
5205454 Schutz et al. Apr 1993 A
5265509 Chen Nov 1993 A
5317645 Perozek May 1994 A
5372359 Miura Dec 1994 A
5375785 Boone Dec 1994 A
5463839 Stange Nov 1995 A
5518144 Samuelson et al. May 1996 A
5638417 Boyer Jun 1997 A
5653439 Rider et al. Aug 1997 A
5671262 Boyer Sep 1997 A
5860563 Guerra Jan 1999 A
5868275 Moody Feb 1999 A
5882004 Padget Mar 1999 A
5924687 Hannon Jul 1999 A
5975518 Wakana Nov 1999 A
6053302 Leu Apr 2000 A
6070867 Tsurumi Jun 2000 A
6186490 Sugiura Feb 2001 B1
6213346 Skerrett et al. Apr 2001 B1
6311819 Stromme Nov 2001 B1
6378858 Suga Apr 2002 B1
6447864 Johnson Sep 2002 B2
6510962 Lim Jan 2003 B1
6520408 Force Feb 2003 B1
6536624 Johnson et al. Mar 2003 B2
6609449 Granger Aug 2003 B2
6655679 Boucher Dec 2003 B2
6736466 Helland et al. May 2004 B1
6860447 Boone et al. Mar 2005 B2
6971542 Vogel et al. Dec 2005 B2
7144006 Graef Dec 2006 B2
7149600 Rippolone Dec 2006 B2
7182329 Graef et al. Feb 2007 B2
7191657 Maier Mar 2007 B2
7195237 Graef et al. Mar 2007 B2
7344132 Graef et al. Mar 2008 B2
7472802 van Riel Jan 2009 B2
7878445 Granger et al. Feb 2011 B2
7922167 Kajiyama Apr 2011 B2
7954405 Kling Jun 2011 B2
8083078 Omura Dec 2011 B2
8108068 Boucher Jan 2012 B1
8225925 Bassani Jul 2012 B2
8298640 Cattacin Oct 2012 B2
8356767 Formon et al. Jan 2013 B2
8712268 Iwasaki Apr 2014 B2
8741410 Cattacin Jun 2014 B2
8899508 Hjort et al. Dec 2014 B2
8910941 Jacobs Dec 2014 B2
9078546 Kaufmann Jul 2015 B2
9492355 Ratnakar Nov 2016 B2
9542534 Ducatt Jan 2017 B1
9572460 Petocchei et al. Feb 2017 B2
9668621 Andersson et al. Jun 2017 B2
9984213 Howieson May 2018 B2
9999325 Larsson et al. Jun 2018 B2
10390664 Larsson et al. Aug 2019 B2
10568471 Larsson et al. Feb 2020 B2
20010020626 Skerrett et al. Sep 2001 A1
20020033405 Gergek et al. Mar 2002 A1
20030024943 MacDonald Feb 2003 A1
20030110915 Kapiloff et al. Jun 2003 A1
20030121970 Force et al. Jul 2003 A1
20040041330 Ko Mar 2004 A1
20040256516 Granger Dec 2004 A1
20050067519 King Mar 2005 A1
20050223860 Formon Oct 2005 A1
20050275153 Owa Dec 2005 A1
20060006190 Janet Jan 2006 A1
20060065094 Lewis et al. Mar 2006 A1
20060071011 Varvarelis Apr 2006 A1
20070010389 Cutrona et al. Jan 2007 A1
20070034534 Vanburen Feb 2007 A1
20070089582 Formon Apr 2007 A1
20070145062 Formon et al. Jun 2007 A1
20070236110 Kling Oct 2007 A1
20080023905 Graef et al. Jan 2008 A1
20080121649 Kistner May 2008 A1
20090014945 Izumichi Jan 2009 A1
20090046136 Choi et al. Feb 2009 A1
20090057478 Conner Mar 2009 A1
20090218363 Terzini Sep 2009 A1
20090321470 Knoth Dec 2009 A1
20100025519 Granger et al. Feb 2010 A1
20100046994 Kikuchi et al. Feb 2010 A1
20100068092 Larsson Mar 2010 A1
20100258579 Billman et al. Oct 2010 A1
20110088810 Cicognani Apr 2011 A1
20110089213 Granger Apr 2011 A1
20110101020 Granger May 2011 A1
20110139920 Formon Jun 2011 A1
20110210137 Kling Sep 2011 A1
20120072017 Kim Mar 2012 A1
20120085777 Bucci et al. Apr 2012 A1
20120193463 Newhouse et al. Aug 2012 A1
20120211509 Granger Aug 2012 A1
20130099924 Larsson et al. Apr 2013 A1
20130105614 Hjort et al. May 2013 A1
20130161346 Wolme et al. Jun 2013 A1
20130270290 Schmidt et al. Oct 2013 A1
20130277492 Granger et al. Oct 2013 A1
20140138398 Daniels May 2014 A1
20140209624 Larsson Jul 2014 A1
20140353327 Bae Dec 2014 A1
20140358278 Zhang Dec 2014 A1
20150077449 Kobashi Mar 2015 A1
20150102048 Case et al. Apr 2015 A1
20150150423 Pommer et al. Jun 2015 A1
20150175287 Tidhar Jun 2015 A1
20150282678 Larsson et al. Oct 2015 A1
20150282679 Larsson Oct 2015 A1
20150282680 Larsson et al. Oct 2015 A1
20150297042 Larsson et al. Oct 2015 A1
20160247345 Ratnakar Aug 2016 A1
20180242797 Larsson et al. Aug 2018 A1
Foreign Referenced Citations (50)
Number Date Country
2035651 Aug 1992 CA
2085219 Sep 1991 CN
2527209 Dec 2002 CN
1600210 Mar 2005 CN
1625364 Jun 2005 CN
1937946 Mar 2007 CN
101026986 Aug 2007 CN
101080188 Nov 2007 CN
101351290 Jan 2009 CN
102281808 Dec 2011 CN
102395307 Mar 2012 CN
202173351 Mar 2012 CN
102762137 Oct 2012 CN
102905593 Jan 2013 CN
102984979 Mar 2013 CN
103607934 Feb 2014 CN
103648936 Mar 2014 CN
104188587 Dec 2014 CN
104363807 Feb 2015 CN
0154497 Sep 1985 EP
0236709 Sep 1987 EP
0392696 Oct 1990 EP
1830687 May 2010 EP
2975233 Jan 2016 EP
853284 Mar 1940 FR
2539726 Jul 1984 FR
2932671 Dec 2009 FR
2433248 Jun 2007 GB
2001247257 Sep 2001 JP
2002065500 Mar 2002 JP
2011194125 Oct 2011 JP
2688358 May 2019 RU
2004056250 Jul 2004 WO
2006071148 Jul 2006 WO
WO-2006071148 Jul 2006 WO
2007000153 Jan 2007 WO
2008009760 Jan 2008 WO
2008078168 Jul 2008 WO
2011045493 Apr 2011 WO
2011149393 Dec 2011 WO
WO-2011149393 Dec 2011 WO
2012003867 Jan 2012 WO
WO-2012003867 Jan 2012 WO
2012076776 Jun 2012 WO
2012134362 Oct 2012 WO
2013007302 Jan 2013 WO
2013115687 Aug 2013 WO
2013184049 Dec 2013 WO
WO-2013184049 Dec 2013 WO
WO-2020126048 Jun 2020 WO
Non-Patent Literature Citations (51)
Entry
International Search Report (PCT/ISA/210) dated Dec. 18, 2014, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2014/050518.
Office Action (Examination report No. 1 for Standard Patent Application) dated Oct. 20, 2017, by the Australian Patent Office in corresponding Australian Patent Application No. 2014392814. (4 pages).
Office Action dated Mar. 20, 2018, by the Federal Service for Intellectual Property in Russian Patent Application No. 2016146116/12(074014) and an English Translation of the Office Action. (14 pages).
Office Action dated May 17, 2019, by the Australian Government/IP Australia in corresponding Australian Patent Application No. 2018260790. (4 pages).
Office Action No. 12168, dated Nov. 14, 2018, by the Colombian Patent Office in Colombian Patent Application No. NC2018/0009220 and Agents Letter in English Language, (11 pages).
Office Action No. 12173, dated Nov. 8, 2018, by the Colombian Patent Office in Colombian Patent Application No. NC2017/0002817 and Agents Letter in English Language, (15 pages).
Office Action dated Jun. 30, 2018, by the Colombian Patent Office in corresponding Colombian Patent Application No. NC2017/0002817. (19 pages).
Second Examination Report dated Apr. 9, 2018 by the Australian Patent Office in Australian Patent Application 2014392814, 4 pages.
The extended European Search Report dated Nov. 6, 2017, by the European Patent Office in corresponding European Patent Application No. 14890725.6-1601. (12 pages).
Written Opinion of the International Preliminary Examining Authority (PCT Rule 66) (Form PCT/IPEA/408) dated May 17, 2016, by the European Patent Office as the International Searching Authority for International Application No. PCT/SE2014/050518.
Written Opinion of the International Searching Authority (PCT/ISA/237) dated Dec. 18, 2014, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2014/050518.
Notification of Transmittal of The International Preliminary Report on Patentability (Form PCT/IPEA/416) and International Preliminary Report on Patentability (Form PCT/IPEA/409) dated Jul. 20, 2016, by the European Patent Office for International Application No. PCT/SE2014/050518.
Office Action (Notification of the First Office Action) dated Sep. 14, 2018 by the State Intellectual Property Office of the People's Republic of China in corresponding Chinese Patent Application No. 201480079420.0, and an English Translation of the Office Action. (16 pages).
Office Action (Notification of the Second Office Action) dated May 20, 2020 by the State Intellectual Property Office (SIPO) of the People's Republic of China in corresponding Chinese Patent Application No. 201480079420.1, and an English Translation of the Office Action. (13 pages).
Extended European Search Report in corresponding European Application No. 20194912.2-1005, dated May 12, 2021 (9 pages).
An English Translation of the Office Action (Decision on Grant) dated Apr. 28, 2016, by the Federal Service for Intellectual Property Office in Russian Patent Application No. 2015119664/12. (6 pages).
English language translation of Office Action/Search Report dated May 17, 2016, by the Russian Patent Office in corresponding Russian Patent Application No. 2015119242. (9 pages).
Office Action (Text of the First Office Action) dated Nov. 22, 2019, by the State Intellectual Property Office (SIPO) of the People's Republic of China in corresponding Chinese Patent Application No. 201711308320.3 (31 pages).
European Patent Office dated Aug. 22, 2014. (4 pages).
PCT1SE2012105116, “International Preliminary Report on Patentability Received”, 7 pages.
Office Action (Notification of the Fourth Office Action) dated Sep. 30, 2020, by the China National Intellectual Property Administration (CNIPA) of the People's Republic of China in corresponding Chinese Patent Application No. 201480079420.1 and an English Translation of the Office Action. (15 pages).
Office Action (Note No. 11541) dated Sep. 15, 2020, by the Industry and Commerce in corresponding Colombian Patent Application No. NO2020/0008801, and an English Translation of the Office Action. (22 pages).
Office Action (Notification of the 2nd Office Action) dated Jun. 24, 2020, by the National Intellectual Property Administration (CNIPA) of the People's Republic of China in corresponding Chinese Patent Application No. 201711308320.3, and an English Translation of the Office Action. (20 pages).
International Search Report (PCT/ISA/210) dated Jul. 1, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2012/051158.
Written Opinion (PCT/ISA/237) dated Jul. 1, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2012/051158.
International Preliminary Report on Patentability (PCT/IPEA/409) dated Jan. 29, 2015, by the Swedish Patent Office as the International Preliminary Examining Authority for International Application No. PCT/SE2012/051158.
Written Opinion of the International Preliminary Examining Authority (PCT/IPEA/408) dated Nov. 10, 2014, by the Swedish Patent Office as the International Preliminary Examining Authority for International Application No. PCT/SE2012/051158.
PCT Demand (PCT/IPEA/401) dated Mar. 11, 2014, by the Swedish Patent Office as the International Preliminary Examining Authority for International Application No. PCT/SE2012/051158.
International Search Report (PCT/ISA/210) dated Dec. 2, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2013/050204.
Written Opinion (PCT/ISA/237) dated Dec. 2, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2013/050204.
International Preliminary Report on Patentability (PCT/IPEA/409) dated Mar. 31, 2014, by the Swedish Patent Office as the International Preliminary Examining Authority for International Application No. PCT/SE2013/050204.
PCT Demand (PCT/IPEA/401) dated Mar. 31, 2014, by the Swedish Patent Office as the International Preliminary Examining Authority for International Application No. PCT/SE2013/050204.
International Search Report (PCT/ISA/210) dated Jul. 8, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2012/051160.
Written Opinion (PCT/ISA/237) dated Jul. 8, 2013, by the Swedish Patent Office as the International Searching Authority for International Application No. PCT/SE2012/051160.
The extended European Search Report dated May 6, 2016, by the European Patent Office in corresponding European Patent Application No. 12887211.6-1601. (9 pages).
The extended European Search Report dated May 6, 2016, by the European Patent Office in European Patent Application No. 12887301.5-1601. (8 pages).
An English Translation of the Official Action/Search Report dated May 17, 2016, by the Federal Service for Intellectual Property Office in Russian Patent Application No. 2015119242/12. (9 pages).
The extended European Search Report dated Jun. 29, 2016, by the European Patent Office in European Patent Application No. 13848737.6-1601. (8 pages).
Office Action (Notification of the First Office Action) dated Sep. 19, 2016, by the state intellectual property office (SIPO) of the People's Republic of China in corresponding Chinese Patent Application No. 201280076556.8, and an English Translation of the Office Action. (5 pages).
Office Action (Notification of the First Office Action) dated Sep. 20, 2016, by the State Intellectual Property Office (SIPO) of the People's Republic of China in Chinese Patent Application No. 201280076596.2, and an English Translation of the Office Action. (19 pages).
The extended European Search Report dated Jun. 29, 2016, by the European Patent Office in European Patent Application No. 12886996.3-1601. (7 pages).
Notification of Transmittal of the International Preliminary Report on Patentability (Forms PCT/IPEA/416 and PCT/IPEA/409) dated Jan. 16, 2015, by the European Patent Office in the International Application No. PCT/SE2012/051164. (7 pages).
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority (Forms PCT/ISA/220, PCT/ISA/210 and PCT/ISA/237) dated Jun. 18, 2013, by the Swedish Patent Office in the International Application No. PCT/SE2012/051164. (12 pages).
Written Opinion of the International Preliminary Examining Authority (Form PCT/IPEA/408) dated Oct. 22, 2014, by the European Patent Office in the International Application No. PCT/SE2012/051164. (6 pages).
Office Action (Notification of the second Office Action) dated Apr. 10, 2017, by the State Intellectual Property Office (SIPO) of the People's Republic of China in Chinese Patent Application No. 201280076596.2, and an English Translation of the Office Action. (21 pages).
Office Action (Notification of the second Office Action) dated May 10, 2017, by the State Intellectual Property Office (SIPO) of the People's Republic of China in Chinese Patent Application No. 201280076557.2, and an English Translation of the Office Action. (20 pages).
Office Action (Communication pursuant to Article 94(3) EPC) dated Oct. 2, 2017, by the European Patent Office in the European Patent Application No. 12 887 301.5-1601. (5 pages).
Office Action (Notification of the third Office Action) dated Aug. 21, 2017, by the State Intellectual Property Office (SIPO) of the People's Republic of China in the Chinese Patent Application No. 201280076596.2, and an English Translation of the Office Action. (21 pages).
Office Action (Communication pursuant to Article 94(3) EPC) dated Sep. 4, 2017, by the European Patent Office in corresponding European Patent Application No. 12 887 211.6-1601. (5 pages).
Office Action (Non-Final) issued by the U.S. Patent and Trademark Office in the U.S. Appl. No. 15/307,313 dated Sep. 18, 2020, U.S. Patent and Trademark Office, Alexandria, VA. (14 pages).
Communication pursuant to Article 94(3) EPC issued in European Patent Application No. 20 194 812.2-1005, dated Jun. 9, 2023 (6 pages).
Related Publications (1)
Number Date Country
20200383530 A1 Dec 2020 US
Continuations (2)
Number Date Country
Parent 15964934 Apr 2018 US
Child 16793199 US
Parent 14438442 US
Child 15964934 US