Consumer packaged goods, particularly absorbent articles and tissue products, are often packaged in fully sealed packaging to avoid infestation of dirt and grime. In certain instances, the packaging may comprise a paperboard carton having ends that are sealed by folding together four flaps. One such carton is the regular slotted container (RSC) and is illustrated in
Another common folded carton is the overlap slotted container (OSC) which, like the RSC, has a carton top formed from four folded flaps. One type of OSC is illustrated in
Variations on the OSC have been proposed to improve carton durability and stackability. For example, the inner and outer flaps may be cut to different dimensions to enable the inner flaps to abut one another, avoiding any gap between the flaps when folded into a carton. This type of carton is often referred to as a center special slotted container (CSSC) and is illustrated in
In certain instances, one of the outer flaps forming the carton top may be provided with a tab portion to facilitate opening and resealing of the carton. Tabs are commonly employed where the outer flaps overlap one another, such as in the cartons illustrated in
While the foregoing cartons provide good sealing of carton contents, there remains a need for a carton which is capable of providing improved sealing, may provide efficient use of the interior volume of the carton, may be stackable, and may be readily manufactured.
The present invention provides a carton, particularly a carton for storing and dispensing consumer products and more particularly absorbent consumer products and still more particularly tissue products such as rolled tissue products, which eliminates plastic packaging while still protecting the carton contents from dirt and grime. The carton contents are protected by providing a carton having a top panel formed from opposing flaps that overlap to some extent. The overlapped portion however, is designed to compress on center and not to add material height to the perimeter of the carton so that multiple cartons may be stacked one on top of another to form a stable unit load.
Accordingly, in one embodiment the present invention provides a carton having a folded top panel, a top panel perimeter and a carton height, the top panel formed from four folded flaps—a pair of opposed major top flaps and a pair of opposed minor top flaps—where one of the major top flaps has a tab. The tab is sized such that then the first and second major flaps are folded closed the tab overlaps at least portion of the opposing major top flap. While the tab overlaps a portion of the opposing top flap, the overlap generally occurs near the center of the carton such that the carton height is relatively uniform about the entirety of the carton perimeter.
In another embodiment the present invention provides a carton having a longitudinal dimension, a transverse dimension, opposed top and bottom panels, opposed first and second side panels and opposed first and second end panels, the carton comprising: a first major top flap having opposed first and second lateral edges and a tab, a second major top flap having first and second opposed lateral edges, and first and second minor top flaps, wherein the tab at least partially overlaps a portion of the second major flap and wherein the first and second major top flap lateral edges do not overlap one another.
In still another embodiment the present invention provides a carton having a bottom panel, a top panel, a top panel perimeter edge and a carton height, the carton comprising first and second major top flaps folded to form the top panel wherein the height of the carton about the entirety of the perimeter edge is substantially uniform and wherein the first and second major top panels do not overlap one another along any portion of the perimeter edge.
In yet another embodiment the invention provides a carton having a longitudinal dimension, a transverse dimension, opposed top and bottom panels, opposed first and second side panels and opposed first and second end panels, the carton comprising: a first major top flap having opposed first and second lateral edges and a tab having a length dimension (TL), a width dimension (TW) and a tab area (TA), a second major top flap having first and second opposed lateral edges and a recess having a length dimension (RL), a width dimension (RW) and a recess area (RA), and first and second minor top flaps, wherein the tab at least partially overlaps the recess and a portion of the second major flap and wherein the first and second major top flap lateral edges do not overlap one another.
A carton for purposes herein will have six discernable “sides” (front, left, right, top, bottom, rear) and will be box-like or cuboid in overall shape. The spatial orientation used herein is such that the “bottom” of the fully erected carton refers to the panel that will be in contact with another surface, such as a stationary surface, such as a store shelf or on a shelf in a consumer's home, or another carton when in stacked configuration. Correspondingly, the “top” of the present carton refers to the uppermost panel of the carton when the carton is standing upright with the bottom contacting a surface and is the panel of the carton where an access to the interior of the carton exists. “Rear” and “back” are terms that may be used interchangeably to refer to that panel of the box opposite the front panel and not visible when the carton is viewed at the front plan. When viewing the front plan of the erected carton (i.e. viewing the carton face-on), the side to the right is herein designated the “right side panel” and the side to the left is herein designated the “left side panel.”
Throughout the disclosure “panel” and “flap” may be used interchangeably as primarily flat, rigid, structural elements that are mutually contiguous and that collectively form the overall cuboid structure of the carton when the carton is erected, although where possible, panel refers to a larger and substantially visible portion of the carton and flap to a smaller functional portion such as a minor flap that may not be visible from the exterior of the carton once erected. Any side to the erected carton (e.g. “top”, “left side”, “right side”, “front,” “rear,” or “bottom”) may be comprised of multiple separate panels and/or flaps, (i.e., any side to the present erected carton may be comprised of overlapping layers of panels for added strength and/or ease in gluing). For example, in certain embodiments the top and bottom panels of an erected carton may be formed from folded major and minor flaps.
The nature of the product that may be contained within the carton of the present invention is immaterial to the scope of the present invention, although it is preferred that the present carton be used to contain consumer goods, particularly absorbent products, and more particularly tissue products, such as folded or rolled tissue products, that may be used immediately upon removal from the carton. In this way, the carton of the present invention, may have panels that are entirely sealed and prevent the ingress of contaminants such as dirt and dust. Further, by providing a fully sealed carton, the carton contents may be packaged and shipped without the use of additional packaging materials, such as plastic films that are commonly used to overwrap and protect consumer goods, particularly tissue products.
The term “blank” used herein refers to a flat board/sheet that is cut to a pattern that may be erected into a carton structure. In certain embodiments the blank may be a flat piece of corrugated board that has various cut lines and fold lines such that a machine (called a conversion machine or a carton erector) can build it into a 3-dimensional carton. Such blanks may also be cut with perforated lines that may outline locations where the erected box can be opened at a future time. Perforated lines may allow removal of a flap, the opening of a handle or grasping aperture, or may define a tear strip to open a sealed carton. Alternatively, perforations may outline entire sections of a box intended to be fully removed at some point and may even run the length of the blank (and hence, circumscribe the entire erected box) so that the entire box can be separated into portions along that perforated line. Perforations in general allow for the ripping, tearing or breaking of the corrugated or paper board along the line that is comprised of perforations. Perforations may be small notches, small cuts, or holes, or combinations thereof, and may be pierced or cut through one side or both sides of the corrugated board. For example, a perforated line that may be torn may comprise a series of small linear cuts lined up end to end with a particular spacing between the cuts.
Blanks represent a convenient and collapsed form of a box that may be stacked, bundled and shipped to the manufacturer of the product that is to be placed therein for storing, shipping and merchandising. A die-cut machine cuts card or paperboard or corrugated board into a blank that has a pattern such that the manufacturer can fold it up and glue it into the box shape, readying it for filling with product. Such processes and machines used for cutting, scoring and perforating card, paperboard and corrugate board into intricate blanks for box construction are well known in the art.
In regard to the materials of construction, the carton of the present invention may be constructed of various paperboard, cardboard, corrugated board, sheet metal, or wood paneling, or combinations of these materials, with relatively thin paperboard or cardboard being preferred over corrugate. The blanks that will be described below are preferably manufactured from white cardboard. Corrugated board may be constructed by sandwiching and gluing fluted corrugating medium between layers of white, mottled-white or brown paper liner or paperboard. The choice of white, mottled-white, or brown paper for the corrugated board depends on what the carton is to be used for. The present carton may be constructed of post-consumer waste/recycled materials or new materials as desired, with varying thicknesses depending on cost, desired weight and strength, balanced with environmental responsibility.
As used herein, the term “affixation” generally refers to the attachment of flaps and panels to one another for the purpose of erecting a flat blank into a final carton. Affixation may be carried out using any one of a number of well-known fasteners such as, for example, glue, staples, or tape, or combinations thereof. In this regard, where “glue” or “gluing” is stated herein, other substitute/additional means of affixing flaps and panels to one another, (such as stapling and taping), is within the scope of the invention. Likewise, a “glue flap” may be secured to another panel by staples or tape rather than glue.
The carton of the present invention may be formed from a foldable sheet material, such as paperboard, such as the blank illustrated in
The flaps forming the top or bottom of the carton are generally disconnected from one another to form transversely extending lateral side edges. Further, the distal ends of the flaps generally form a longitudinally extending flap edge. For example, the first major top flap 20 has first and second transversely extending lateral edges 21a, 21b and a longitudinally extending flap edge 23. The other top flaps have similar shapes and edges, such as a first minor top flap 22 having first and second lateral edges 31a, 31b and longitudinal edge 33, a second major top flap 24 having first and second lateral edges 25a, 25b and longitudinal edge 27, and a second minor top flap 26 having first and second lateral edges 35a, 35b and longitudinal edge 37.
As seen in
Further, as will be appreciated by one of ordinary skill in the art, the blank of
Regardless of the exact configuration of the blank, the blank and resulting carton comprise major flaps that are shaped and configured to provide compression on the center major overlap. That is one of the major flaps has a tab portion extending therefrom and the other major flap has a recess. When folded the tab portion overlaps the opposing major flap and a portion of the tab overlays the recess. While the tab portion forms an overlap, preferably near the midpoint of the top panel, there is no overlap between the lateral edges of the panels.
For example, with reference again to
With continued reference to
While the dimensions of the recess and the tab may vary, in certain instances it may be desirable that the area of the tab be greater than the area of the recess. For example, in one embodiment the tab may have length dimension (TL), a width dimension (TW) and a tab area (TA). The recess may also have a length dimension (RL), a width dimension (RW) and a recess area (RA) where tab area (TA) is greater than the recess area (RA). In other instances, the overlapped portion may have a length dimension (OL), a width dimension (OW) and an overlapped portion area (OA), wherein the tab width (TW) is greater than the recess width (RW) and the overlap area (OA) is less than the tab area (TA).
In a particularly preferred embodiment the overlapped portion area (OA) is from about 20 to about 40 percent of the tab area (TA), such as from about 25 to about 35 percent of TA. In other embodiments the recesses width (RW) is less than the tab width (TW), such as from about 60 to about 70 percent of tab width.
In certain preferred embodiments the bottom flaps may be similarly shaped to the top flaps. For example, as illustrated in
While it may be desirable to form a blank having similarly shaped and sized top and bottom flaps, the invention is not so limited. In alternate embodiments the bottom flaps, and particularly the bottom major flaps may not be provided with a tab or recess, but rather have a rectangular shape.
With reference now to
The carton has an upper surface 180 formed by the major top flaps 200, 204 and an upper carton surface perimeter 152. The perimeter 152 is bounded along its lateral edges of the carton by the major flap lateral edges 201a, 201b, 201c, 201d. Preferably the major top flaps 200, 204 do not overlap one another at any point about the perimeter 152. Rather than overlap, the first and second major top flap longitudinal edges 203, 207 abut one another or are slightly spaced apart from one another. In this manner the carton height may be generally uniform along the entire perimeter of the carton.
With reference to
With continued reference to
Apart from the tab 208, the first major top flap 200 generally does not overlap the second major top flap 204. Rather, when the major top flaps 200, 204 are folded to close the carton top 127, the first and second major top flap longitudinal edges 203, 207 abut one another or are slightly spaced apart from one another. In this manner the carton has an upper perimeter that is monoplanar.
The carton 100 further comprises folded first and second minor flaps 202, 206, which are in folded connection with the back and front panels (back panel 123 visible in
With reference now to
As the major top panels do not overlap one another along their lateral edges, the carton generally has a height along its perimeter that is substantially uniform. For example, the carton height (H1) near the first longitudinally extending fold line 130a is approximately equal to the carton height (H2) near the carton length midpoint (M), which is approximately equal to the carton height (H3) near the second longitudinally extending fold line 130b. In this manner the perimeter of the carton may be described as monoplanar. This is particularly useful when stacking multiple cartons on top of one another, as the edge load is uniformly distributed about the perimeter of the carton and increases the stability of the stacked cartons.
With reference now to
As illustrated in
In certain embodiments, the carton's monoplanar perimeter is facilitated by, at least in-part, by the tab of one major flap extending at least partially over a recess in the opposing major flap. One embodiment of a tab/recess configuration that may result in a carton having a monoplanar perimeter is illustrated in the cross-section view of
As illustrated in
The advantage of the present invention is particularly apparent when multiple cartons are stacked one on top of the other, such as illustrated in
The monoplanar nature of the carton perimeter is further facilitated by providing the carton with a compressible center overlapped portion. As illustrated in
Filing Document | Filing Date | Country | Kind |
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PCT/US2019/034526 | 5/30/2019 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2020/242471 | 12/3/2020 | WO | A |
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Entry |
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Printpapa, “Full Overlap Slotted Container (FOL)”, 2018. |
Number | Date | Country | |
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20200377256 A1 | Dec 2020 | US |