Abstract:
A sleeve operable to at least partially contain a cylindrical article, the sleeve including opposing planar side panels; bowed dust flaps extending upwardly from said side panels; front and back panels, each having rounded, upper corner portions; and overlapping top panels in superposing relation to upper portions of said bowed dust flaps, said overlapping top panels being mutually secured, whereby said bowed dust flaps are retained in a bowed condition that conforms with said rounded upper panel portions of said front and back panels

Description:
SUMMARY 
       [0001]    In accordance with an exemplary embodiment, a sleeve operable to at least partially contain a cylindrical article is disclosed, the sleeve comprising: opposing planar side panels; bowed dust flaps extending upwardly from said side panels; front and back panels, each having rounded, upper corner portions; and overlapping top panels in superposing relation to upper portions of said bowed dust flaps, said overlapping top panels being mutually secured, whereby said bowed dust flaps are retained in a bowed condition that conforms with said rounded upper panel portions of said front and back panels. 
         [0002]    In accordance with an exemplary embodiment, a display system is disclosed, comprising: a sleeve operable to at least partially contain a cylindrical article, the sleeve comprising: opposing planar side panels; bowed dust flaps extending upwardly from said side panels; front and back panels, each having rounded, upper corner portions; and overlapping top panels in superposing relation to upper portions of said bowed dust flaps, said overlapping top panels being mutually secured, whereby said bowed dust flaps are retained in a bowed condition essentially conforming with said rounded upper panel portions of said front and back panels; a cylindrical article at least partially retained within said sleeve, whereby a rounded lower portion of the article extends below a lower portion of said sleeve: and a display rack comprising a plurality of undulating display rack panels; said sleeve and said article retained in a space defined between adjacent members of said undulating panels. 
         [0003]    In accordance with an exemplary embodiment, a blank for forming a sleeve operable to at least partially contain a cylindrical can, the blank comprises: a first side panel connected to a front panel along a first fold line, the first fold line extending along a first side edge of the front panel; a second side panel connected to the front panel along a second fold line, the second fold line extending along a second side edge of the front panel; a back panel connected to the second side panel along a third fold line, the third fold line extending along a first side edge of the back panel; a first glue panel connected to the back panel along a fourth fold line, the fourth fold line extending along a second side edge of the back panel; a first dust panel connected to the first side panel along a top edge of the first side panel; a top panel connected to the front panel along a fifth fold line, the fifth fold line extending along a top edge of the front panel; a second dust panel connected to the second side panel along a top edge of the second side panel; a second glue panel connected to the back panel along a sixth fold line, the sixth fold line extending along a top edge of the back panel; and wherein the front panel and the back panel each have a pair of rounded edges on the top edge thereof, and wherein each of the first and second dust panels has a plurality of spaced-apart parallel fold lines, which allows the first and second dust panels to have a curvature thereto upon assembly of the blank into a sleeve. 
         [0004]    In accordance with another exemplary embodiment, a method of packaging a cylindrical can into a rounded sleeve, comprises: partially erecting the sleeve from the blank so as to have an opening at a bottom of the sleeve and an opening at a top of the sleeve; plowing the first dust panel and the second dust panel into the opening at the top of the sleeve; applying an adhesive to one or more of the top panel and the second glue panel and folding the top panel and the first glue panel over the first dust panel and the second rounded panel to close the top of the sleeve; and arranging the cylindrical can in the erected sleeve such that a side of the cylindrical can extends beyond an outer periphery of the sleeve. 
         [0005]    In accordance with a further exemplary embodiment, a package containing a plurality of sleeves, each of which is configured to receive a cylindrical can, wherein each of the plurality of sleeves is erected from a blank comprises: a first side panel connected to a front panel along a first fold line, the first fold line extending along a first side edge of the front panel; a second side panel connected to the front panel along a second fold line, the second fold line extending along a second side edge of the front panel; a back panel connected to the second side panel along a third fold line, the third fold line extending along a first side edge of the back panel; a first glue panel connected to the back panel along a fourth fold line, the fourth fold line extending along a second side edge of the back panel; a first dust panel connected to the first side panel along a top edge of the first side panel; a top panel connected to the front panel along a fifth fold line, the fifth fold line extending along a top edge of the front panel; a second dust panel connected to the second side panel along a top edge of the second side panel; a second glue panel connected to the back panel along a sixth fold line, the sixth fold line extending along a top edge of the back panel; and wherein the front panel and the back panel each have a pair of rounded edges on the top edge thereof, and wherein each of the first and second dust panels has a plurality of spaced-apart parallel fold lines, which allows the first and second dust panels to have a curvature thereto upon assembly of the blank into a sleeve. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    The disclosure is explained below with reference to the exemplary embodiments shown in the drawings. In the drawings: 
           [0007]      FIG. 1   a  is a blank for forming a rounded sleeve for containing a cylindrical can in accordance with an exemplary embodiment. 
           [0008]      FIG. 1   b  is a side planar view of a packaging sleeve formed from a blank as shown in  FIG. 1   a.    
           [0009]      FIG. 1   c  is a top view of a packaging sleeve formed from a blank as shown in  FIG. 1   a.    
           [0010]      FIG. 2  is a bottom perspective view of a partially erected blank as shown in  FIG. 1   a.    
           [0011]      FIG. 3  is an illustration of a visible portion of a single cylindrical can within a sleeve formed from a blank as shown in  FIGS. 1   a - 1   c , and  2 . 
           [0012]      FIG. 4  is a view of an approximate size and shape of a regulatory label for a cylindrical can of moist smokeless tobacco. 
           [0013]      FIG. 5  is an illustration showing the assembly of a rounded sleeve being erected and an insertion of a single cylindrical can into the erected rounded sleeve in accordance with an exemplary embodiment. 
           [0014]      FIG. 6  is an illustration of a packaging process for one or more rounded sleeves, each containing a cylindrical can into a preformed carton. 
           [0015]      FIG. 7  is an illustration of a tobacco can packaging system in accordance with an exemplary embodiment. 
           [0016]      FIG. 8  is a side view of a dual sleeve packaging system in accordance with an exemplary embodiment. 
           [0017]      FIG. 9  is a partial, detail perspective view of a display rack together with a can and sleeve in accordance with an exemplary embodiment. 
           [0018]      FIG. 10  is a planar view of a blank of another embodiment including a tuck-flap closure. 
           [0019]      FIG. 11  is a top view of a sleeve constructed from the blank of  FIG. 10 . 
       
    
    
     DETAILED DESCRIPTION 
       [0020]    In accordance with an exemplary embodiment, a blank for forming a sleeve operable to contain a discus shaped container such as a cylindrical can is disclosed. The cylindrical can be held securely within the sleeve such that the cylindrical can fits into moist smokeless tobacco can display racks located at retail outlets. The sleeve is designed to expose the lower portion of the cans so as to prevent interference from occurring on gravity feed and rail systems used in the display racks. In addition, the visibility of portions of the cans also aids consumers in identifying the product they wish to purchase. 
         [0021]    As shown in  FIG. 1   a , a blank  10  for forming a sleeve  100  operable to at least partially contain a cylindrical can  200  ( FIG. 3 ) is disclosed. The blank  10  includes a first side panel  12 , which is connected to a front panel  14  along a first fold line  33 . The first fold line  33  extends along a first side edge  61  of the front panel  14 . A second side panel  16  is connected to the front panel  14  along a second fold line  35 . The second fold line  35  extends along a second side edge  63  of the front panel  14 . A back panel  18  is connected to the second side panel  16  along a third fold line  37 . The third fold line  37  extends along a first side edge  65  of the back panel  18 . In accordance with an exemplary embodiment, a first glue panel  20  is connected to the back panel  18  along a fourth fold line  39 . The fourth fold line  39  extends along a second side edge  67  of the back panel  18 . 
         [0022]    In accordance with an exemplary embodiment, a first dust panel (or first dust flap)  22  is connected to the first side panel  12  along a top edge  32  of the first side panel  12 . The first dust panel  22  has a free distal end or edge  23 . The top panel  24  is connected to the front panel  14  along a fifth fold line  34 . The fifth fold line  34  extends along a top edge  71  of the front panel  14 . A second dust panel (or second dust flap)  26  is connected to the second side panel  16  along a top edge  36  of the second side panel  12 . The second dust panel  26  has a free distal end or edge  27 . A second glue panel  28  is connected to the back panel  18  along a sixth fold line  38 . The sixth fold line  38  extends along a top edge  73  of the back panel  18 . In accordance with an exemplary embodiment, a measured distance of the top panel  24  from one outer edge  75  to another outer edge  77  is less than a diameter of a cylindrical can  200 . The top panel  24  preferably has a pair of rounded edges  87 ,  89  along a corresponding top edge  25 . 
         [0023]    In accordance with an exemplary embodiment, the front panel  14  and the back panel  18  each have a pair of rounded edges  91 ,  93 ,  95 ,  97  along the corresponding top edge  71 ,  73 . The pair of rounded edges  91 ,  93 ,  95 ,  97  provides for a curvature or rounded edge upon assembly of the blank  10  into a sleeve  100 . In addition, in accordance with an exemplary embodiment, each of the first and second dust panels  22 ,  26  have a plurality of spaced-apart parallel fold lines  82 ,  84 , which extend to an outer tab portion  83 ,  85 , which allows the first and second dust panels  22 ,  26  to have a curvature thereto upon assembly of the sleeve  100  ( FIG. 2 ). In accordance with an exemplary embodiment, the outer tab portion  83 ,  85  is a score free portion or free of fold lines and preferably having rounded edges thereto. In accordance with an exemplary embodiment, the plurality of spaced-apart parallel fold lines  82 ,  84  extend from the top edge or fold line  32 ,  36  of the first and second side panels  12 ,  16 , to a point or location above the top edge  71 ,  73  of the front and back panels  14 ,  18 . 
         [0024]    In accordance with an exemplary embodiment, the first and the second side panels  12 ,  16  have a width of about 24 mm (0.945 inches), and a height of about 35 mm (1.378 inches). The front and the back panels  14 ,  18  have a width of about 65.56 mm (2.581 inches) and a height of about 48 mm (1.89 inches). In accordance with an exemplary embodiment, the first and the second dust panels  22 ,  26  have a width of about 24 mm (0.945 inches), and a height of about (1.378 inches). The top panel  24  has a width of about 41.56 mm (1.636 inches) and a height of about 22.48 mm (0.885 inches). The first glue panel  20  has a width of about 21.5 mm (0.846 inches) and a height of about 35 mm (1.378 inches). The second glue panel  28  has a width of about 37.74 (1.486 inches) and a height of about 23 mm (0.906 inches). 
         [0025]    In accordance with another exemplary embodiment, the first side panel  12  and the second side panel  16  can have a width of about 48 mm (1.890 inches), so as to be configured to hold two cylindrical cans  200  in a back to back relationship. 
         [0026]    In accordance with an exemplary embodiment, the front panel  14  and the back panel  18  are substantially the same width. For example, in accordance with an exemplary embodiment, a height of the front panel  14  and a height of the back panel  18  is less than a diameter of a cylindrical can  200 , such that portions of the cylindrical can  200  can extend beyond a bottom edge  72  of the front panel  14  and a bottom edge  74  of the back panel  18  when the cylindrical can  200  is inserted in an erected blank  10 . 
         [0027]    In accordance with an exemplary embodiment, the blank  10  may include a finish or varnish on the clay side of the blank  10 . In accordance with an exemplary embodiment, the first glue panel  20  and the second glue panel  28  each can include a varnish free area or portion  41 ,  45  which may improve the bonding formed by the glue, for example, a hot-melt adhesive material. In accordance with an exemplary embodiment, the first glue panel  20  has a pair of edges  42 ,  43 , which are slightly tapered in a direction toward a vertical free edge  44 . In accordance with another exemplary embodiment, the second glue panel  28  has a pair of vertical edges  17 ,  19 , which are slightly tapered toward a horizontal free edge  29 . 
         [0028]      FIG. 2  is a bottom view of a partially erected blank  10 , which forms a sleeve (or box)  100  in accordance with an exemplary embodiment. As shown in  FIG. 2 , The first side panel  12 , the front panel  14 , the second side panel  16 , the back panel  18 , and the first glue panel  20  are folded approximately 180 degrees about fold lines (and/or score lines)  33 ,  35 ,  37 ,  39 . In accordance with an exemplary embodiment, the front panel  14  and the back panel  18  are folded along the second fold line  35  and the fourth fold line  39  approximately 180 degrees. The first side panel  12  and the second side panel  14  are folded along the first fold line  33  and the third fold line  37  approximately 180 degrees so that the first side panel  12  and the first glue panel overlap  20 . A glue, adhesive, and/or tape is then applied to one or more of the first side panel  12  and the first glue panel  20  to adhere the first side panel  12  and the first glue panel  20  together. 
         [0029]    In accordance with an exemplary embodiment, the resultant box  100  structure may be flattened to facilitate shipping or its panels  12 ,  14 ,  16 ,  18 , and  20  may be folded and glued in a flattened form for erection at a later time such as after shipping. It is preferable that the resultant box  100  is supplied by the manufacture folded and glued as set forth above. However, it is preferable that the sleeves or resultant boxes  100  are not packed tightly so as to flatten them completely. As shown in  FIG. 2 , the partially erected sleeve  100  includes an open bottom  110  and a partially open top  120 . The partial open top  120  includes the first dust panel  22 , the second dust panel  26 , the top panel  24  and the second glue panel  28 , which upon assembly form a closed end or top portion of the sleeve  100 . 
         [0030]      FIG. 3  is an illustration of a visible portion of a single cylindrical can  200 , which is configured to fit within the rounded sleeve  100  as shown in  FIGS. 1 and 2 . In accordance with an exemplary embodiment, the cylindrical can  200  fits within the sleeve  100  by friction fit, wherein the transverse size or width of the inner portion of the sleeve  100  is equal to and/or slightly smaller than an outer diameter of the cylindrical can  200 . 
         [0031]    In accordance with an alternative embodiment, the sleeve  100  can be designed to receive two or more cylindrical cans  200  arranged back to back in the sleeve  100  with a portion of each can  200  extending outward of a bottom opening in the sleeve  100 . In accordance with another exemplary embodiment, two or more sleeves  100  can be attached to one another in a side-by-side manner by a panel as shown in  FIG. 8 . For example, in accordance with an embodiment, a connection panel (not shown) can extend between two or more sleeves  100 . 
         [0032]    In accordance with an exemplary embodiment, the cylindrical can  200  contains moist smokeless tobacco. In an exemplary embodiment, the sleeve  100  can be designed to hold two or more cylindrical cans  200 . The moist smokeless tobacco in the two or more cylindrical cans  200  can be the same flavor or a different flavor of moist smokeless tobacco than in the other can  200 . In addition, each of the two or more cylindrical cans  200  preferably includes indicia indicating the contents of the cans  200  and wherein the indicia is exposed upon placement in the sleeve. 
         [0033]    In accordance with an exemplary embodiment, the cylindrical can  200  is a 1.2 ounce (oz.) can of smokeless tobacco. For example, a visible portion  210  of the cylindrical can  200  has a width  220  of about 57.09 mm and a height of about 17.75 mm. In accordance with an exemplary embodiment, the regulatory label  300  ( FIG. 4 ) are visible on the visible portion  210  of the cylindrical can  200 . 
         [0034]      FIG. 4  is a view of an approximate size of a regulatory label  300  in accordance with an exemplary embodiment, which is positioned on the front and back panels  14 ,  18  of the assembled sleeve  100 . In accordance with an exemplary embodiment, the regulatory label  300  covers at least 30 percent of each panel  14 ,  18 . For example, in accordance with an exemplary embodiment, the total panel area of the front panel  14  and the back panel  18  is about 3,133.07 mm 2  with the visible portion or area of the cylindrical can  200  is about 734.7 mm 2 . Accordingly, a total area of the front and back panels  14 ,  18  of the assembled sleeve  100  and the visible portion or area  210  of the cylindrical can  200  is about 3,867.47 mm 2 . In accordance with an exemplary embodiment, the regulatory label  300  has an area  310  of about 1,160.24 mm 2 , which includes a width of about 65.56 mm and a height of about 17.70 mm. When placed on the front and back panels  14 ,  18  of the sleeve  100 , the regulatory label  300  preferably comprises at least 30 percent of the visible area of the sleeve  100 . 
         [0035]    In accordance with exemplary embodiment, the blank  10  is formed of a material selected from the group consisting of cardboard, paperboard, plastic, metal, or combinations thereof. For example, in a preferred embodiment, the blank  10  is formed of cardboard having a weight ranging from about 100 grams per square meter to about 350 grams per square meter. 
         [0036]    Preferably, the sleeve  100  finds particular application as a container for one or more cylindrical cans  200 . Preferably, the one or more cylindrical cans  200  contain a moist smokeless tobacco product. Also preferably, each of the one or more cylindrical cans  200  has a diameter of about 66 mm. It will be appreciated that through appropriate choices of the dimensions thereof, the sleeve  100  may be designed for different numbers and/or sizes or dimensions of cylindrical cans  200 , and the sizes and dimensions as set forth herein are only exemplary. For example, the size and dimensions of each of panels of the blank  10  and/or cylindrical cans  200  can be smaller or larger than the exemplary embodiments. 
         [0037]    Preferably, the sleeve  100  has a height ranging from about 40 mm to about 55 mm, more preferably a height ranging from about 45 mm to about 49 mm, and most preferably about 47 mm. Also preferably, the height is measured from a bottom edge  72  of the front panel  14  to a top edge  71  of the front panel  14 . 
         [0038]    In the preferred embodiment, exterior surfaces of the sleeve  100  may be printed, embossed, debossed or otherwise embellished with manufacturer or brand logos, trademarks, slogans and other consumer information and indicia. 
         [0039]    In another embodiment, a method for assembling the sleeve  100  from a single laminar blank  10  is provided. The laminar blank  10  including the one or more fold lines  33 ,  35 ,  37 ,  39 , is first partially assembled by folding it along the transverse fold lines, which includes folding the side panels  12 ,  16  such that the side panels  12 ,  16  extending from the front panel  14  and the back panel  18  overlap on each side and gluing the first side panel  12  to the first glue panel  20  to form the sleeve  100 . 
         [0040]    Referring now to  FIG. 5 , in accordance with another exemplary embodiment, a method of assembling  400  a blank  10  as shown in  FIG. 1  into a sleeve  100  having a cylindrical can  200  therein. The method  400  includes receiving a plurality of partially glued, un-erected sleeves or boxes  100 , which have had their side panels  12  and  16  glued together. In accordance with an exemplary embodiment, it is preferable that the resultant box  100  is supplied by the manufacturer folded and glued as set forth above. In addition, it is preferable that the sleeves or resultant boxes  100  are not packed tightly within a box and/or shipping carton so as to flatten the sleeves or resultant boxes  100  completely. 
         [0041]    In accordance with an exemplary embodiment, the flattened blank or sleeve  100  is placed in box forming machine or rotating tucker, which partially erects the sleeve  100  by pressing on one or more of the first side panel  12 , the front panel  14 , the second side panel  16 , or the back panel  18  to reform the blank into a partially erected sleeve  100 . The sleeve  100  is then fed into the forming machine or rotating tucker as shown in step  410  in an open position, wherein the first and second dust panels  22 ,  26  and the top panel  24  are in an open or unsealed position. In step  420 , the second dust panel  26  is plowed or folded inward about the plurality of fold lines  84  closing a portion of the closed end  110  of the sleeve  100 . In step  430 , the first dust panel  22  is plowed or folded inward about the plurality of fold lines  82  closing a second portion of the closed end  110  of the sleeve  100 . In step  440 , the second glue panel  28  is plowed or folded inward about the sixth fold line  38  onto an upper edge or surface of the first and second dust panels  22 ,  26 . A hot melt, glue or adhesive is then applied to the second glue panel  28 , and the top panel  24  is plowed or folded about the fifth fold line  34  onto the second glue panel  28  to close the top portion of the sleeve. In step  450 , one or more cylindrical cans  200  are inserted into the open end or bottom  110  of the sleeve  100 . In accordance with an alternative embodiment, the one or more cylindrical cans  200  can be inserted into the open portion or bottom end  110  of sleeve  100  at any time during the sealing or closing of the closed portion or top end of sleeve  100 . In addition, the order of plowing the first and the second dust panels  22 ,  26  can be reversed, wherein the first dust panel  22  can be plowed or folded inward about the plurality of fold lines  82  before the second dust panel  26  is plowed or folded about the plurality of fold lines  84 . 
         [0042]      FIG. 6  is an illustration of a packaging process  500  for one or more rounded sleeves  100 , each containing a cylindrical can  200  into a preformed carton  530 . In accordance with an exemplary embodiment, a plurality of packaged sleeves  520 , each of the plurality of packaged sleeves  520  containing a rounded sleeve  100  and the cylindrical can  200  is inserted into a carton  530  in groups of preferably of five (5) sleeves  100 . The plurality of packaged sleeves  520  are collated using a collator (not shown) into groups of packaged sleeves, for example, a group of five (5), on a conveyor tray or conveyor belt, and a plunger or rod  510  having a flat head  512  pushes the group of packaged sleeves  520  through a shoe or directing device  540  into an open end  532  of a preformed carton  530  in side-by-side manner. In accordance with an exemplary embodiment as shown in  FIG. 5 , the rounded or closed end  120  of the packaged sleeve enters into the carton  530  before the open end  110 . Once the carton  530  has been filled, the open end  532  of the preformed carton  530  can be sealed and the product can be stored and/or shipped to consumers. Advantageously, feeding the rounded-sleeve  100  and can  200  with the rounded end  120  leading helps avoid snags during the loading of the carton  530 . 
         [0043]      FIG. 7  is an illustration of a tobacco can packaging system  600  in accordance with an exemplary embodiment. As shown in  FIG. 7 , the tobacco can packaging system  600  can include a powered carton magazine  610 , a product infeed conveyor  620 , an electrical enclosure  630 , an operator interface  640  and a carton conveyor belt or system  650 . The electrical enclosure  630  can include a computer processor, an operating system and software to control the operation of the tobacco can packaging system  600 . In accordance with an exemplary embodiment, the operator interface  640  can include a graphical interface and/or a keyboard to assist with the operations of the various functions of the system  600 . 
         [0044]    In accordance with an exemplary embodiment, one or more packaged sleeves  100  are fed though the product infeed conveyor  620  in a single line to a collator system having a first plunger or rod  622 , which separates two or more packaged sleeves  100  from the product infeed conveyor  620 , and more preferably 5 packaged sleeves  100  onto a packaging tray or conveyor tray  626 . Once the two or more packaged sleeves and more preferably five (5) packaged sleeves  100  have been separated, the packaged sleeves  100  are pushed or advanced forward with a plunger or rod  624  into a carton  612 . In accordance with an exemplary embodiment, the carton  612  is fed from the powered carton magazine  610  onto the conveyor belt or system  650 . In accordance with an exemplary embodiment, the carton  612  filled with one or more packaged sleeves  100  in a side-by-side configuration within the carton  612  as the carton  612  is conveyed along the conveyor belt or system  650 . Once the carton  612  has been filled, the carton advances forward along the conveyor belt or system  650  to a device (not shown) which closes the open end of each of the cartons  612  and places a plurality of cartons  612  in a box for shipping to a warehouse, retailers and/or consumers. Advantageously, the rounded, exposed portion of the can  200  and the rounded end  120  of the sleeve  100  helps avoid snags during loading of the carton  612 . 
         [0045]    Referring now to  FIG. 9 , the rounded corner sleeve  100  and the can  200  may be sized to fit between undulating display rack panel  700 ,  700 ′ without interference between the upper “corners” of the sleeve  100  and adjacent portions of the rack panels  700 , 700 ′. The rounded corners of the sleeve  100  avoid interference that would otherwise occur with sleeves of a more rectangular shape and having orthogonal upper corners. 
         [0046]    Referring now to  FIGS. 10 and 11 , in another embodiment, the sleeve blank  10 ′ includes a modified top panel  24  and an inner top panel  810  which are closed by a tuck flap  812  of the panel  24 ′. The tuck flap  812  cooperates with a slot  814  provided along a lower edge portion of the inner top panel  810 . Preferably, the inner top panel  810  is provided with w wing panels  816  and  818  which lie atop the dust flaps  22  and  26  when folded into the form of the sleeve  100 ′. 
         [0047]    As used herein, the terms “front”, “back”, “upper, “lower”, “side”, “top”, “bottom”, “left”, “right” and other terms used to describe relative positions of the components of the sleeve refer to the sleeve in an upright position. 
         [0048]    As used herein, the term “can” refers to any disc-like container, regardless of material comprising the container and regardless of its content. 
         [0049]    As used herein, the term “longitudinal” refers to a direction from bottom to top or vice versa of the sleeve  100 . The term “transverse” refers to a direction perpendicular to the longitudinal direction. 
         [0050]    In this specification, the word “about” is sometimes used in connection with numerical values to indicate that mathematical precision is not intended. Accordingly, where the word “about” is used with a numerical value, that numerical value should be interpreted to include a tolerance ±10% of the stated numerical value. 
         [0051]    It will now be apparent to those skilled in the art that the foregoing specification describes with particularity a sleeve. Moreover, it will also be apparent to those skilled in the art that various modifications, substitutions, variations, and equivalents exist for claimed features of container. Accordingly, it is expressly intended that all such modifications, substitutions, variations, and equivalents for claimed features of the container, which fall within the spirit and scope of the invention as defined by the appended claims, be embraced thereby.