CARTON HAVING A PAPER DISPENSING WINDOW
The present disclosure relates to cartons, particularly cartons for storing and dispensing folded sheet material, that are substantially free from polymeric materials. The cartons have dispensing windows formed from paper and are provided with dispensing openings well suited for pop-up dispensing. The dispensing openings, which are preferably elongated, have a plurality of cusps and a plurality of slits disposed thereon to grasp and hold the sheet during dispensing.
Sheet materials, such as facial tissue, are commonly stored and dispensed from cartons. The cartons are constructed so that tissues can be picked out one by one through an opening covered with a dispensing window. The dispensing window comprises a dispensing slit or cut-out portion that may be configured to holds tissues for pop-up type dispensing. To achieve pop-up dispensing the slit must be configured such that when one tissue is removed from the box, the following one is partially pulled out and is held in a substantially up-right position by the slit so that a user may grab and pull it during the next use. This requires appropriate balance between the shape of the slit and material that are used for the window.
While pop-up dispensing is convenient, it presents several challenges such as chaining, and fallback, for example. This is typically due to friction of tissues onto dispensing window, or between them, and/or due to an inappropriate shape for the slit. A common means for holding the next tissue in a ready position is a slit plastic film through which the tissues are dispensed, and which gently pinches the next tissue between the two sides of the slit. While such slit plastic films have performed well, there is a need to replace plastic films with other means due to an increasing general environmental desire to replace plastics with degradable or otherwise more environmentally friendly materials.
Previous attempts to replace slit plastic films with more environmentally friendly materials have not been entirely successful. For example, U.S. Pat. No. 5,316,177, which discloses a pop-up facial tissue carton with a paper window having an elongated opening with two or more slits emanating from its two ends, created a large degree of friction between the dispensed tissue sheet and the paper window. While the high degree of friction prevented fallbacks, it was noisy and caused tearing of the paper window. German Utility model G9108036 also discloses a carton having a paper dispensing window. To reduce the degree of friction between the dispensed sheet and the paper dispensing window, the window is provided with an opening that extends all the way to the carton opening at two or more points. While such designs may reduce the amount of friction, they are susceptible to fallbacks and the window is easily deformed, bent, or torn.
It is therefore one main object of the present invention to provide a tissue carton having a paper dispensing window that facilitates pop-up dispensing while minimizing fallback and chaining.
SUMMARYThe present inventors have now discovered a carton, particularly a carton for storing and dispensing folded tissue sheets in a pop-up fashion, having a paper dispensing window having a dispensing opening having a plurality of cusps and slits. The cusps and slits cooperate with one another to hold the sheet material without tearing of the window or without excessive noise. Further, the carton and dispensing openings have been sized and shaped to permit the paper window to be bent or folded during dispensing without tearing.
Accordingly, in one embodiment, the present invention provides a tissue carton for storing and dispensing a plurality of tissue sheets, the carton comprising: a carton having at least one carton wall; a carton opening disposed on the at least one carton wall, the opening having a carton opening peripheral edge; a paper window attached to the at least one carton wall and at least partially covering the carton opening; a dispensing opening disposed on the paper window, the opening having a peripheral edge shaped to define a first and a second cusp; and a slit extending radially outward from each of the first and the second cusps.
In another embodiment the present invention provides a pop-up tissue dispensing carton comprising: a carton top wall having an elongated carton opening disposed on the carton top wall, a paper window affixed to the top wall and having an elongated opening through which tissues within the carton are withdrawn, the elongated opening having at least two cusps and at least two slits extending therefrom at an acute angle relative to the longitudinal axis of the elongated opening.
In yet another embodiment the present invention provides a dispensing carton containing a stack of interfolded sheets of a paper product comprising: a top wall having a dispensing opening through which the sheets are withdrawn from the carton; two pairs of opposing side walls; a bottom wall; a paper window affixed to at least a portion of the inner surface of the top wall; a dispensing opening having a plurality of cusps and a plurality of slits disposed on the paper window.
As used herein the term “carton opening” generally refers to an opening formed in one or more walls of a carton.
As used herein the term “cusp” generally refers to a point where two segments meet and the tangents of each of the segments is equal. In certain non-limiting instances, a cusp may be a sharp corner formed by a pair of converging curvilinear segments where the curve is not differentiable.
As used herein the term “dispensing opening” generally refers to an opening through which tissues are dispensed such as, for example, an opening formed in a material covering a portion of the carton opening.
As used herein the term “paper” generally refers to a fibrous structure in sheet format. Paper useful in the present invention may be manufactured from a variety of paper-making fibers, such as, for example, natural fibers or synthetic fibers, or any other suitable fibers, and any combination thereof. Papermaking fibers useful in the present invention include cellulosic fibers commonly known as wood pulp fibers. Applicable wood pulps include chemical pulps, such as Kraft, sulfite, and sulfate pulps, as well as mechanical pulps including, for example, groundwood, thermomechanical pulp and chemically modified thermomechanical pulp.
As used herein the term “panel” generally refers to a portion of a dispensing window within a carton opening that is entirely separated from another portion of the dispensing window. The separation of a dispensing window within a carton opening into first and second panels may be achieved by a slit extending from the dispensing opening to the carton opening peripheral edge. A non-limiting example of a panel is illustrated in
As used herein the term “slit” generally refers to a cut where no material is removed. In certain embodiments a tissue carton of the present invention may be provided with a window having one or more slits disposed thereon and the tissue is fitted through a slit which frictionally retains the tissue unless it is manually moved through the slit.
As used herein the term “tissue” generally refers to any individual sheet product, such as facial tissue, dry or moistened wipes, for example household or industrial wipes, soap or fabric softening sheets, or the like. Normally, the basis weight of sheet products to be dispensed by the cartons of the present invention is less than about 80 grams per square meter (gsm), in some embodiments less than about 60 gsm, and in some embodiments, between about 10 to about 60 gsm.
As used herein the term “window” generally refers to a component of the carton covering at least a portion of the carton opening and generally having a dispensing opening disposed thereon for dispensing a tissue there-through.
DETAILED DESCRIPTIONWith reference to
The stack of tissues may be interfolded, prefolded interfolded, or non-interfolded. As used herein, the phrase “prefolded interfolded” or “interfolded” tissues means that the tissues are folded and interleaved with neighboring tissues immediately above and/or below in the clip of tissues. The tissues can be interleaved by any suitable means, including the use of an interfolder as employed in the papermaking arts. If an interfolder is used, consecutive tissues may be attached to each other at perforation lines. In such cases, the unperforated segments of the perforation lines should be sufficiently weak to permit the consecutive tissues to separate from each other upon removal from the carton. This can be controlled by the degree of perforation of the tissue sheet. Tissues that may be employed in a non-interfolded clip which are not interleaved with neighboring tissues are releasably attached to neighboring tissues so that upon dispensing one tissue, the next adjacent tissue is ready for dispensing. Particularly preferred folding patterns include interfolding patterns that provide somewhat less friction, which tend to avoid tearing of the tissue when extracted from the container.
The carton 20 is illustrated as a rectangular parallelepiped comprising a top wall 26, and opposite bottom wall (not illustrated in
The carton may be constructed from any rigid materials, for example, cardboard, carton stock, paper board, polypropylene, polyethylene, polystyrene, ABS plastic, plastic, metal, wood, and glass amongst other suitable alternatives.
The top wall 26 of the carton 20 defines a carton opening 30 having a peripheral edge 32 in the form of an aperture through which tissues may be individually removed from the carton. While the carton of
In the preferred embodiment illustrated in
The carton 20 further comprises a paper dispensing window 40 overlaying the carton opening 30. The paper dispensing window 40 comprises a dispensing opening 42 through which a tissue sheet 50 may be dispensed. The shape and features of the dispensing opening will be discussed in more detail below. The paper dispensing window 40 may be bonded to the top wall 26 by adhesives or other suitable means. Preferably the dispensing window is adhesively attached to the underside of the top wall and extends at least partially across a portion of the top wall.
In certain embodiments the carton may comprise a surfboard covering at least a portion of the dispensing opening. Such surfboards are a common feature of current commercially available tissue cartons. In certain embodiments the surfboard may be attached to a cut-out section in the dispensing window to allow for a larger dispensing opening. In certain embodiments, to further facilitate dispensing of the first sheet, the surfboard may be attached to the top sheet of the tissue stack such that when the surfboard is removed by a user the top sheet is dispensed.
The use of paper for the dispensing window is desirable, particularly for larger carton openings, in order to protect the tissues within the carton and provide sufficient resistance to prevent multiple tissue dispensing. Further, in those instances where the carton is formed from paper, the use of a paper window permits the carton and window to be recycled together. The paper dispensing window may be formed from a fibrous sheet having a basis weight of at least about 40 grams per square meter (gsm), such as from about 40 to about 120 gsm, such as from about 50 to about 80 gsm. More preferably the paper dispensing window comprises a calendered paper that has been coated on one side and has a basis weight from about 50 to about 80 gsm.
With continued reference to
In certain preferred embodiments it may be desirable to provide the carton with a window having a dispensing opening that is relatively large, particularly in relation to the carton opening. For example, the dispensing opening may have an area from about 4.0 to about 30 cm2, such as from about 6.0 to about 20 cm2, such as from about 8.0 to about 15 cm2. The area of the dispensing opening may be from about 20 to about 60 percent of the carton opening, such as from about 25 to about 50 percent of the carton opening.
As illustrated in
With reference now to
With continued reference to
In certain preferred embodiments each slit extends from the cusp to the carton opening peripheral edge. The slits may have a length from about 10 to about 30 mm, such as from about 15 to about 20 mm. Preferably the slits are disposed on the window such that a tissue to be dispensed is fitted through a slit and is frictionally retained therein until it is manually moved through the slit by a user.
In further preferred embodiments a slit extends from each of the cusps. In this manner a dispensing window may have two or more slits, such as 2, 3, 4, 5, 6, 7, 8, 9 or 10 slits. The slits and cusps may be arranged such that they are aligned with the dispensing opening longitudinal axis. For example, with reference to
With continued reference to
With reference now to
Another dispensing opening is illustrated in
Another embodiment of a dispensing opening according to the present invention is illustrated in
Still other embodiments of dispensing openings useful in the present invention are illustrated in
In yet other embodiments, the carton opening 30 may have a substantially circular carton opening peripheral edge 32, such as illustrated in
All of the embodiments disclosed herein provide the advantages of ease of dispensing and less sheet tearing during dispensing while providing a carton constructed entirely from environmentally friendly materials and substantially free from polymeric materials. The preferred embodiments herein are also cost effective and easy to manufacture.
Numerous modifications may be made in the invention without departing from its spirit and purpose, and various modifications have already been set forth and it should be readily apparent that various additional changes and modifications may be made in the structural details of the carton within the scope of the appended claims. It is to be understood that the size of the carton and type and size of the sheets to be dispensed therefrom do not constitute a limitation in the invention and that its size and the dimensions of its parts may vary. Accordingly, in view of the foregoing description, it will be apparent to one of ordinary skill in the art that the following embodiments are within the scope of the present invention:
In a first embodiment the present invention provides a tissue carton for storing and dispensing a plurality of tissue sheets, the carton comprising: a carton having at least one carton wall; a carton opening disposed on the at least one carton wall, the opening having a carton opening peripheral edge; a paper window attached to the at least one carton wall and at least partially covering the carton opening; a dispensing opening disposed on the paper window, the opening having a peripheral edge shaped to define a first and a second cusp; and a slit extending radially outward from each of the first and the second cusps.
In a second embodiment the present invention provides the carton of the first embodiment wherein the first and the second cusps are disposed opposite one another and the slits are longitudinally aligned with one another.
In a third embodiment the present invention provides the carton of the first or the second embodiments wherein the carton opening is a longitudinally elongated ellipse having a carton opening longitudinal axis and the dispensing opening has a dispensing opening longitudinal axis, wherein the carton opening longitudinal axis and the dispensing opening longitudinal axis are aligned with one another.
In a fourth embodiment the present invention provides the carton of any one of the first through third embodiments wherein the carton opening is a longitudinally elongated ellipse having a carton opening longitudinal axis and the dispensing opening has a dispensing opening longitudinal axis, wherein the carton opening longitudinal axis and the dispensing opening longitudinal axis are not aligned with one another.
In a fifth embodiment the present invention provides the carton of any one of the first through fourth embodiments wherein each slit extends from the cusp to the carton opening.
In a sixth embodiment the present invention provides the carton of any one of the first through fifth embodiments wherein the slits define first and second window panels, the first and second window panels arranged opposite one another and having substantially similar size and shape.
In a seventh embodiment the present invention provides the carton of any one of the first through sixth embodiments wherein the peripheral edge is shaped to define three, four, five or six cusps.
In an eighth embodiment the present invention provides the carton of any one of the first through seventh embodiments wherein each of the cusps comprises a slit extending radially outward therefrom.
In a ninth embodiment the present invention provides the carton of any one of the first through eighth embodiments wherein each of the slits extends from the cusp to the carton opening peripheral edge.
In a tenth embodiment the present invention provides the carton of any one of the first through ninth embodiments wherein the paper is a coated paper having a basis weight from about 40 to about 80 grams per square meter.
In an eleventh embodiment the present invention provides the carton of any one of the first through ninth embodiments wherein the carton opening has a carton opening area and the dispensing opening has a dispensing opening area, wherein the dispensing opening area is from about 20 to about 60 percent of the carton opening area.
In a twelfth embodiment the present invention provides the carton of any one of the first through eleventh embodiments wherein the dispensing window comprises a plurality of panels, each of the panels separated from one another by a slit and wherein at least two of the panels differ in terms of size and shape.
Claims
1. A tissue carton for storing and dispensing a plurality of tissue sheets, the carton comprising:
- a. a carton having at least one carton wall;
- b. a carton opening disposed on the at least one carton wall, the opening having a carton opening peripheral edge;
- c. a paper window attached to the at least one carton wall and at least partially covering the carton opening;
- d. a dispensing opening disposed on the paper window, the dispensing opening having a dispensing opening peripheral edge shaped to define a first and a second cusp; and
- e. a first and a second slit extending radially outward from the first and the second cusps.
2. The carton of claim 1 wherein the first and the second cusps are disposed opposite one another and the slits are longitudinally aligned with one another.
3. The carton of claim 1 wherein the carton opening is a longitudinally elongated ellipse having a carton opening longitudinal axis and the dispensing opening has a dispensing opening longitudinal axis, wherein the carton opening longitudinal axis and the dispensing opening longitudinal axis are aligned with one another.
4. The carton of claim 3 wherein the first and the second slits are aligned with the dispensing opening longitudinal axis.
5. The carton of claim 1 wherein the first and the second slits extend from the cusp to the carton opening peripheral edge.
6. The carton of claim 5 wherein the slits define first and second window panels, the first and second window panels arranged opposite one another and having substantially similar size and shape.
7. The carton of claim 1 wherein the dispensing opening peripheral edge is shaped to define three, four, five or six cusps.
8. The carton of claim 7 wherein each of the cusps comprises a slit extending radially outward therefrom.
9. The carton of claim 8 wherein each of the slits extends from the cusp to the carton opening peripheral edge.
10. The dispenser of claim 1 wherein the carton opening peripheral edge is circular and the dispensing opening peripheral edge is shaped to form a hypocycloid having two, three, four, five or six cusps.
11. The tissue dispenser of claim 1 wherein the paper is a coated paper having a basis weight from about 40 to about 80 grams per square meter.
12. The carton of claim 1 wherein the carton opening has a carton opening area and the dispensing opening has a dispensing opening area, wherein the dispensing opening area is from about 20 to about 60 percent of the carton opening area.
13. The carton of claim 1 wherein the dispensing window comprises a plurality of panels, each of the panels separated from one another by a slit and wherein at least two of the panels differ in terms of size and shape.
14. A pop-up tissue dispensing carton comprising: a carton top wall having an elongated carton opening disposed on the carton top wall, a paper window affixed to the top wall and having an elongated opening through which tissues within the carton are withdrawn, the elongated opening having at least two cusps and at least two slits extending therefrom at an acute angle relative to the longitudinal axis of the elongated opening.
15. The carton of claim 14 wherein the elongated opening has four cusps and each cusp has a slit extending therefrom at an acute angle relative to the longitudinal axis of the elongated opening.
16. The carton of claim 15 wherein the slits define four window panels and wherein at least two of the panels have a similar size and shape.
17. A carton for storing and dispensing a stack of interfolded sheets of a paper product, the carton comprising:
- a. a top wall having a dispensing opening through which the sheets are withdrawn from the carton;
- b. two pairs of opposing side walls;
- c. a bottom wall;
- d. a paper window affixed to at least a portion of the inner surface of the top wall;
- e. a dispensing opening having a plurality of cusps and a plurality of slits disposed on the paper window.
18. The carton of claim 17 wherein the carton opening has a carton opening area and the dispensing opening has a dispensing opening area, wherein the dispensing opening area is from about 20 to about 60 percent of the carton opening area.
19. The carton of claim 17 wherein each of the plurality of cusps have a slit extending radially therefrom, the slits having a length from about 10 to about 30 mm.
20. The carton of claim 19 wherein each of the slits have a substantially similar length.
Type: Application
Filed: Jan 21, 2020
Publication Date: Feb 2, 2023
Inventors: Nathan D. Wilson (Forest Hill), Andrew J. Parkin (London)
Application Number: 17/794,190