US3219257A

US3219257A - Carton construction

Info

Publication number: US3219257A
Application number: US302670A
Authority: US
Inventors: Ralph F Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1963-08-16
Filing date: 1963-08-16
Publication date: 1965-11-23
Anticipated expiration: 1982-11-23

Description

N0V 23, 1965 R. F. ANDERSON CARTON CONSTRUCTION 3 Sheets-Sheet l Filed Aug. 16, 1963 27" f3 27a Nov. 23, 1965 R. F. ANDERSQN 3,219,257

CARTON CONSTRUCTION Filed Aug. 16, 1965 3 Sheets-Sheet 2 Nov. 23, 1965 R. F. ANDERsoN 3,219,257

CARTON CONSTRUCTION Filed Aug. 16, 1963 5 Sheets-Sheet 5 United States Patent O M' 3,219,257 CARTN CONSTRUCTEGN Ralph F. Anderson, 332 Calvin Park Blvd., Rockford, ill. Filed Aug. 16, 1963, Ser. No. 302,670 6 Claims. (Cl. 229-51) This invention relates to cartons and the blanks therefor.

This invention is particularly directed to a generally rectangular carton as a type havin-g four side walls and end flaps on the side walls which are foldable inwardly to `close and seal the ends of the carton, and which carton has a tear line extending along one side wall and along the end flaps on that side wall to enable opening of an adjacent side wall of the carton, hereinafter sometimes referred to as a cover. In a carton of this type, it is necessary to seal the several end flaps on the carton together in such a manner as to permit portions of the end flaps to open with the cover, while other portions of the end flaps remain joined together to hold the remaining sides of the carton in position. In the prior cartons of this type, the end flaps have been constructed and arranged so that it is necessary to apply adhesive to several end flaps disposed in relatively transverse planes, in order to seal the several flaps together in such a manner as to permit the subsequent opening and reclosing of the coverwall of the carton. The application of adhesive to flaps on the carton disposed in relatively transverse planes, however, markedly complicates the problem of adhesively sealing the ends of the carton.

Cartons of this type are commonly preformed and fed into a filling machine in a flattened condition, and the filling machine then opens the carton; closes the lower end flaps; fills; and then closes the upper end flaps. When a heat sealable adhesive is applied to the carton flaps disposed in relatively transverse planes, it is difficult to adequately heat soften the adhesive on the several end flaps prior to infolding of the same, and it is therefore the present practice to infold the flaps and then apply heat to the closed flaps after the container is filled, to soften the adhesive and seal the end flaps. With some products such as frozen comestibles, it is very diflicult to apply adequate heat to the closed end flaps to seal the same, without also adversely affecting the product in the carton.

An important object of this invention is to provide a carton of the type described having a tear line along one side to enable opening of an adjacent cover side of the carton, and which Carton is constructed and arranged to simplify closing and sealing of the end flaps on the carton.

Another object of this invention is to provide a carton of the type described in which the end flaps are constructed and arranged so as to enable application of adhesive to only one end flap on each end of the carton for sealing the ends of the carton while permitting the subsequent reopening of the cover side of the carton.

Yet another object of this invention is to provide a container of the type described which employs a heat sealable adhesive for joining the end flaps in such a manner as to permit subsequent opening of the cover side of the carton, and which carton avoids necessity of heating the end flaps after they are folded to their closed position to thereby avoid deleterious effects on the product, and which carton instead permits heat softening of the adhesive on the adhesive coated end flap prior to infolding of the same.

These, together with other objects and advantages of this invention, will be more readily appreciated as the same becomes better understood by reference to the following detailed description when taken in connection with the accompanying drawings wherein:

FiG. 1 is a layout View showing the inner side of a 3,Zl9,257 Patented Nov. 23, 1965 ICC carton blank constructed in accordance with the present invention;

FIG. 2 is a layout view illustrating the outer side of the carton blank;

FIG. 3 is a side view of the carton showing the same in a flattened condition;

FIG. 4 is a perspective View of an erected carton with the end flaps open;

FIG. 5 is a perspective view of the carton after the end flaps have been closed and sealed and the carton opened along the tear line to form a hinged cover;

FIGS. 6 and 7 are diagrammatic views illustrating the method and apparatus of erecting; infolding and sealing the bottom flaps; lling; and infolding and sealing the top flaps of the carton; and

FIGS. 8-12 are end views of the carton illustrating the sequence in which the end flaps are folded to close and seal the ends of the carton.

The carton of the present invention is formed from a blank conveniently of cardboard or the like and in general includes first and second opposed side walls 10 and 11, a third side wall 12 which is connected along

fold lines

13 and 14 to one edge of each of the side walls 1t) and 11, and a fourth side wall composed of inner and outer overlapping panels designated 15 and 16 respectively. The inner panel 15 is connected to one edge of the side wall 10 along a fold line 17 and the outer panel 16 is connected to the side wall 11 along a fold line 18. When filled, the carton is adapted to rest on one side Wall while the other side wall forms a hinged reclosable cover for the carton. Accordingly, the first, second, third and fourth side walls are hereinafter sometimes referred to in the claims as the bottom, top, rear and front walls, respectively.

The first side Wall 1t) has first end flaps 21a and 2lb connected to opposite ends along fold lines 22, and the second side wall 11 has

second end flaps

23a and 23b connected to opposite ends along fold lines 24. The third side wall 12 has end flaps 25a and 251; connected to opposite ends along fold lines 26 and the outer panel 16 has end flaps 27a and 27h connected to opposite ends along fold lines 28. The inner panel 15 is also preferably formed with end flaps 29a and 29h which are connected to opposite ends of the inner panel along fold lines 31.

The outer panel 16 and its attached

end flaps

27a and 27b are formed with a tear line that extends lengthwise of the panel and along the end flanges to enable separation of the outer panel and its flanges into first and second panel sections designated 16 and 16, and first and second ilap sections or

tabs

27 and 27 which are respectively connected to the first and second panel sections. While the tear line can be formed in various different ways, it is preferably formed as best shown in FIGS. 1 and 2 by spaced rows of perforations that define a tear strip T therebetween. Preferably, one of the end flaps on the outer panel such as the lower end flap 27b is notched as indicated at 35 at opposite sides of the tear strip to provide a projecting tab T' which can be easily gripped between the fingers and thumb of the user to remove the tear strip.

The carton is preferably preformed in a flattened condition with the outer panel 16 and the inner panel 1S overlapped to form the fourth side wall of the container. The second section 16" of the outer panel 16 is secured to the inner panel. While this can be achieved in various Ways, it is convenient to provide a strip of adhesive designated 36 on the outer face of the inner panel 15 or, alternatively, on the inner face Iof the outer panel section 16, and Which adhesive strip advantageously extends along the end flaps 29a and Z911 on the inner panel. The

adhesive can be of any suitable type which will seal the inner and outer panels together when the carton blank is folded to a flattened condition as shown in FIG. 3 with the inner and outer panels overlapping and may be, for example, a heat scalable adhesive on a drying type adhesive. As previously noted, the adhesive strip 36 preferably extends along the flaps 29a and 29h lso as to also adhesively secure these flaps to the second iiap sections 27 on 0pposite ends of the outer panel 16. When the carton is preformed in a flattened condition as shown in FIG. 3, the fourth side wall formed by the overlapping panels and 16 and the first side wall 10 are disposed substantially coplanar with each other at one side of the carton and the second and third side wall-s 11 and 12 disposed substantially coplanar with each other at the other side of the carton.

The end flaps on opposite ends of the carton are folded inwardly to form a closure for the ends of the carton. In accordance with the present invention, the end fiaps on the respective ends of the fourth side wall 16 are folded in last and adhesive is applied to the underside of those end flaps to seal the ends of Ithe carton in such a manner as to enable opening of one side wall 11 when the tear strip T along the fourth side wall is removed. The first end flaps 21a are preferably dimensioned to extend completely across the end of the carton, as shown in FIG. 9, to close the end of the carton and accordingly, have a length to extend completely across the ends of the side wall 1i) and a width to extend from the score line 22 a distance approximately equal to the width of the adjacent side walls 12. The end flaps 23a and 23h on the opposite side wall 11 are substantially narrower than the flaps 21a and preferably extend from the score line 24 a distance which is approximately equal to the width of the first panel sections 16 of the outer panel 16 to form a cover flange therewith in a manner descrbed hereinafter.

third end flaps

25a and 25b are dimensioned to extend from their respective third side wall 12 part way across the ends of the carton and, preferably, the width of the third end liaps are correlated with the width of the end flaps 29a and 29b on the inner panel 15 of the fourth side wall so that the end flaps extend adjacent to each other but do not overlap when they are folded inwardly, as is best shown in FIG. 5. The

end flaps

27a and 27 b on the outer panel 16 are somewhat wider than the flaps 29a and 29h on the inner panel 15 to extend bey-ond the flaps on the inner panel and overlap the flaps 25a and 25h on the respective ends of the carton, when the fourth end flaps are folded inwardly.

In closing each of the cartons, the first end fiaps such as 21a are folded inwardly as shown in FIG. 9 to substantially close the ends of the carton. In the preferred ernbodiment of the invention illustrated herein, the second end flaps such as 23a are then folded inwardly and overlap a por-tion of the first end liaps 21a as shown in FIG. 10. The third end flaps 25a are then folded inwardly and overlap portions of the

end flaps

21a and 23a, as shown in FIG. 11. The fourth end aps such as 27a are then folded inwardly and overlie portions of the first, second and third end flaps (see FIG. 12). An adhesive is applied to an adhesive area 41 on the underside of the first flap section 27 of the end iiaps 27a and 27b for adhesively securing the first ap section to the second end flap 23a on the respective end of the carton. In the preferred form of the invention wherein the second end flaps 23a, 23h are folded inwardly before the respective third` end flaps 25a, 25h are infolded, the third end flaps are notched or cut away as indicated at 42, in the area that underlies the first flap section 27 of the fourth flap so that the first fiap section directly overlies and is adhesively secured to the respective second flap. An adhesive is also applied to a second adhesive area 43 on the `second flap sections 2'7" of each of the end flaps 27a and 27h, and which adhesive area is located in that portion of the end flaps 27a and 2717 that overlies the

third end fiaps

25a and 25b respec- The tively, to adhesively secure the second flap sections 27 of the flaps 27a and 27'b to the respective third end flap. An adhesive is also preferably applied to a third adhesive area 44 on the

end flaps

29a and 29!) attached to the inner panel 15. As previously noted, the

end flaps

29a and 29!) are preferably proportioned so that they extend adjacent to, but do not overlap, the third end flaps 25a and 25h. The adhesive on the adhesive area 44 therefore functions to adhesively secure the iiaps 29a and 29b on the inner panel directly to the first end flaps 21a and 21b. In addition, the second end fiaps 23a and 23h and the respective flaps 29a and 29b on the inner panel are preferably cut away in adjacent corners as indicated at 47 and 48 so that the adjacent edges of these end flaps extend generally complementary to each other but do not overlap, when the fiaps are folded inwardly.

The adhesive on

area

41, 43 and 44 is preferably of the heat sensitive type which is heat softenable and which will harden rapidly upon cooling to ambient temperature. The adhesive is preferably applied to the

areas

41, 43 and 44 while the carton is still in `the blank form such as shown in FIGS. 1 and 2, and thereafter is heat softened during the erecting, filling and closing of the carton to effect heat sealing of the end flaps together. The successive steps of erecting the carton, infolding and sealing of the lower flaps, filling, infolding and sealing of the upper fiaps, and an apparatus for performing these steps is diagrammatically illustrated in FIGS. 6 and 7. The carton erecting, filling and closing apparatus may conveniently be of the type disclosed in the patent to Anderson, No. 2,612,016, modified in the manner described hereinafter to effect heating of the adhesive on the end flaps attached to the fourth side wall and to effect closing of the several end flaps in proper sequence. In general, the apparatus includes a magazine (not shown) for receiving a `stack of flattened cartons such as shown in FIG. 3 and a transfer mechanism 50 having longitudinally spaced

carton engaging ngers

51, 52, 53, 54, 55 and 56 for advancing the cartons in step fashion past the several instrumentalities. The cartons are squared as they are advanced by the fingers 5l and a mechanism such as 61 is provided for infolding the first flap on the lower end of the carton, as shown at the left in FIG. 1. A means, such as a second guide shoe 62 is provided for infolding the second end flap on the lower end of the carton and a further means such as a third guide 63 is provided for infolding the third end flap on the lower end of the carton. A fourth guide 64 is provided for infolding the fourth tiap on the lower end of the carton. The transfer mechanism 50 advances the cartons in step fashion a distance somewhat greater than the spacing between the adjacent carton engaging fingers 51-56 and the first, second, third and fourth end flaps on the lower end of the carton are sequentially folded inwardly 4by the first, second, third and fourth flap folders as the cartons are advanced to a filling station 66. As previously noted, the adhesive for sealing the lower end liaps is all provided on the fourth end flap and the adhesive on this flap is preferably heated prior to infolding of the fourth end flap. This is achieved by a heating means 68 disposed alongside the path of travel of the fourth end flaps on the carton as they are advanced between the carton erecting and the carton filling stations. The heating means can comprise either a heated plate or bar which is positioned to engage the outer faces of the fourth end flaps as the cartons are advanced, to heat soften the adhesive by heating through the end flaps, or it may comprise a radiant type heater such as an infra red lamp positioned to direct the rays against the inner face of the lower end flaps, prior to infolding of the same. The adhesive on the fourth end flap is therefore softened prior to infolding of the same and, when it is pressed against the other end flaps on the lower end of the carton, the adhesive is rapidly cooled and set.

The filling apparatus may be of any conventional construction and, as shown, includes a nozzle 71 for dispensing material and an elevator 72 for raising the container into position around the nozzle. The container moves downwardly as it is filled and, when the upper end of the container reaches the lower end of the nozzle, an apparatus (not shown) is provided for operating the transfer mechanism to move the filled container crosswise of the nozzle. A second heater 75 which may be of either of the types described in connection with the heater 68, is provided alongside the path of travel of the fourth end flaps on the upper end of the carton to heat soften the adhesive on that end ap prior to infolding of the same. The first, second, third and fourth end flaps on the upper end of the carton are then sequentially folded inwardly by an apparatus including a first flap folder 81, a second flap folding shoe 82, a third flap guide shoe 83 and a fourth ap guide shoe 84. A flap hold down shoe 85 is advantageously provided at the end of the flap folding mechanism to maintain the flaps in a closed position for a sufficient time to assure adequate cooling and sealing of the end flaps. Obviously, the details of construction of the carton erecting and flap folding apparatus can differ from that diagrammatically illustrated in FIGS. 6 and 7 and any suitable flap folding apparatus may be employed to effect the aforementioned folding sequence.

With the above described arrangement, it will be seen that adhesive on the fourth end flaps is heated prior to infolding of the fourth end fiaps. This not only facilitates heat softening of the adhesive, since it is not cooled by the product in the cartons, but also avoids deleterious effects on the product in the carton due to the application of heat. Moreover, it permits the heaters such as 63 and 76 to be positioned intermediate the ends of the carton erecting, filling and folding apparatus instead of requiring an appendage on the end of the apparatus for heat sealing, as in the prior arrangements.

When the several end flaps are folded inwardly and the fourth end flaps 27a and 27b heat sealed to the other end flaps' in the manner previously described, the ends of the carton are closed and sealed. The carton is thereafter opened by removing the tear strip T which separates the outei panel 16 into first and

second sections

16 and 16 and also separates the end flaps 27a and 27b on the outer panel into first and

second flap sections

27 and 27. The flap sections 27 are adhesively secured to the second end flaps 23a and 23b on the second side wall 11 so that the first panel sections 16', the first fiap sections 27 and the second end flaps 23a and 23h form a flange around the second side wall 11. The second side Wall 11 is hingedly connected to the third side Wall 12 so that the second side wall forms a flanged reclosable cover for the carton. The second panel section 16 is adhesively bonded to the first panel section and the second ap sections 27" are adhesively bonded to the third end flaps 25a and also to the first flaps 21a so as to maintain the lower portion of the carton in assembled condition when the cover is opened (as shown in FIG. 5).

From the foregoing, it will be seen that the carton and blank therefor employs a tear line along one side to enable opening of an adjacent side, and that the several end flaps on the carton are constructed and arranged so that the adhesive for sealing the end flaps which form a part of the cover and also the end fiaps which form a part of the bottom of the carton are all provided on one end flap. This markedly facilitates the adhesive securing of the several end flaps since it only requires heating of one end flap and since the end flap can be heated prior to infolding of the same.

I claim:

1. A generally rectangular carton formed of a single blank cut and scored to provide a carton having top and bottom Walls; a rear wall connected to one edge of each of the top and bottom walls and a front wall including an outer front panel and an inner panel respectively connected to one edge of the top and bottom walls; end

6 flaps on each of the top, bottom and rear walls and on the outer front panel; the outer front panel and the end flaps on that panel having a tear line extending lengthwise intermediate the side edges of the front Wall for separating the outer front panel into an upper panel section connected to the top wall and a lower panel section and for separating the end fiaps on the outer front panel into upper and lower tabs respectively connected to the upper and lower panel sections; means bonding the lower panel section to the inner panel; characterized in that the flaps lon the bottom wall, top Wall, rear wall and outer front panel are adapted to be folded inwardly in that order; the end flaps on the rear wall and outer front panel being dimensioned and shaped so that the lower tab overlaps the end flap on the rear wall and the upper tab overl-aps the end flap on the top wall without overlapping the end iiap on the rear wall when all of the end flaps on the carton are folded inwardly to close the end of the carton and an adhesive is c-arried on the underside of the upper and lower tabs in an area and loca` tion to bond the upper and lower tabs to the end flaps on the top and rear walls respectively.

2. A generally rectangular carton formed of a single blank cut and scored to provide a carton having top and bottom walls; a rear wall connected to one edge of each of the top and bottom walls and a front wall including an outer front panel and an inner panel respectively connected to one edge of the top and bottom walls; end flaps on each of the top, bottom and rear walls and on the -outer front panel; the outer front panel and the end fiaps on that panel having a tear line extending lengthwise intermediate the side edges of the front wall for separating the outer front panel into an upper panel section connected to the top wall and Ia lower panel section and for separating the end fiaps on the outer front panel into upper and lower tabs respectively connected to the upper and lower panel sections; means bonding the lower panel section to the inner panel; characterized in that the fiaps on the bottom wall, top wall, rear wall and outer front panel are adapted to be folded inwardly in that order; the end flaps on the bottom wall having a length and width to substantially close the end of the carton when folded inwardly; the end fiaps on the top Wall having a width measured from the top wall approximately equal to the width of said upper panel section; the end flaps on the rear wall and the end flaps on said outer front panel having a combined width in the portion adjacent to said lower tabs which is greater than the width of the top wall whereby the lower tab is adapted to overlie the end flap on the rear wall and a combined width in the portion adjacent to said upper tabs which is less than the Width of said top wall whereby the upper tabs overlie the end flaps on the top wall without overlapping the end fiaps on the rear wall, and an adhesive c-arried on the underside of the upper and lower tabs in an area and location to bond the upper and lower tabs to the end flaps on the top and rear walls respectively.

3. A generally rectangular carton formed of a single blank cut and scored to provide a carton having top and bottom walls; a rear wall connected to one edge of each of the top and bottom walls and a front wall including an outer front panel and an inner panel respectively connected to one edge of the top and bottom walls; end fiaps on each of the top, bottom and rear walls and on the inner and outer front panels; the outer front panel and the end flaps on that panel having a tear line extending lengthwise intermediate the side edges of the front wall for separating the outer front panel into an upper panel section connected to the top wall and a lower panel section and for separating the end flap on the center front panel into upper and lower tabs respectively connected to the upper and lower panel sections; means bonding the lower panel section to the inner panel, the end flaps on the bottom wall having a length and width to substantially close the end of the carton when folded inwardly; the upper and lower tabs on the outer front panel having a width measured from the outer front panel greater than the width of the end llaps on the inner panel whereby the upper and lower tabs project beyond the end llaps on the inner panel, the end flaps on the rear panel and the inner front panel having a combined width no greater than the width of the top wall whereby the end flaps on the rear wall and inner panel are adapted to be folded across the end of the carton without overlapping, the end aps on the rear Wall and the end aps on Said outer front panel having a combined width in the portion adjacent to said lower tabs which is greater than the width -of said top wall whereby the lower tab is adapted to overlie the end flap on the rear wall, and an adhesive carried on the underside of the end flap on the inner panel and on the underside of the upper and lower tabs in an area and location to bond the end -ap on the inner panel to the end flap on the bottom wall and to bond the upper and lower tabs to the end flaps -on the top and rear walls respectively.

4. The combination of claim 3 wherein the end flaps on the inner panel and the end flaps on the top panel have adjacent corners thereof cut away along lines such that the end flaps on the top wall and inner panel are adapted to be folded inwardly without overlapping.

5. A generally rectangular carton formed of a single blank cut and scored to provide a carton having top and bottom walls; a rear wall connected to one edge of each of the top and bottom walls and a front wall including an outer front panel and an inner panel respectively connected to one edge of the top and bottom walls; end flaps on each -of the top, bottom and rear walls and on the inner and outer front panels; the outer front panel and the end flaps on that panel having a tear line extending lengthwise intermediate the side edges of the front wall for separating the outer front panel into an upper panel section connected to the top wall and a lower panel section and for separating the end flap on the outer front panel into upper and lower tabs respectively connected to the upper and lower panel sections; means bonding the lower panel section to the inner panel, the flaps on the bottom wall, top wall, rear wall and front wall being adapted to be folded inwardly in that order, the end flap on the bottom wall having a length and width to substantially close the end of the carton when folded inwardly; the end flap on the top wall having a width measured from the top w-all approximately equal to the width of the upper panel section; the end flaps on the inner panel and the rear wall having a combined width no greater than the width of the top wall whereby the end flaps on the rear wall Iand inner panel are adapted to be folded across the end of the carton without overlapping, the upper and lower tabs on the outer front panel extending Aoutwardly from the end ilaps on the inner front panel; the lower tab and the end flap on the rear panel having a combined width measured from the respective front and rear walls greater than the width of the top wall whereby the lower tab is adapted to overlap the end flap on the rear panel when folded inwardly; the upper tab and the end flap on the rear panel having a combined width measured from the respective front and rear Walls which is less than the width of the top wall whereby the upper tab is adapted to be folded inwardly and Ioverlap the end ap on the top wall without overlapping the end ap on the rear wall; and an adhesive carried on the underside of the end flap on the inner panel and on the underside of the upper and lower tabs in an area and location to bond the end ap on the inner panel to the end flap on the bottom panel and to bond the upper and lower tabs to the end aps on the top and rear walls respectively.

6. The combination of claim 5 wherein said upper and lower tabs have approximately the same width measured from the front wall, the end aps on the rear wall being cut away in the portion that registers with the upper tab when the flaps are folded inwardly.

References Cited by the Examiner UNITED STATES PATENTS 3,111,255 11/1963 Skowronski 229--51 3,131,851 5/1964 Pace 229-51 FRANKLIN T. GARRETT, Primary Examiner.

Claims

1. A GENERALLY RECTANGULAR CARTON FORMED OF A SINGLE BLANK CUT AND SCORED TO PROVIDE A CARTON HAVING TOP AND BOTTOM WALLS; A REAR WALL CONNECTED TO ONE EDGE OF EACH OF THE TOP AND BOTTOM WALLS AND A FRONT WALL INCLUDING AN OUTER FRONT PANEL AND AN INNER PANEL RESPECTIVELY CONNECTED TO ONE EDGE OF THE TOP AND BOTTOM WALLS; END FLAPS ON EACH OF THE TOP, BOTTOM AND REAR WALLS AND ON THE OUTER FRONT PANEL; THE OUTER FRONT PANEL AND THE END FLAPS ON THAT PANEL HAVING A TEAR LINE EXTENDING LENGTHWISE INTERMEDIATE THE SIDE EDGES OF THE FRONT WALL FOR SEPARATING THE OUTER FRONT PANEL INTO AN UPPER PANEL SECTION CONNECTED TO THE TOP WALL AND A LOWER PANEL SECTION AND FOR SEPARATING THE END FLAPS ON THE OUTER FRONT PANEL INTO UPPER AND LOWER TABS RESPECTIVELY CONNECTED TO THE UPPER AND LOWER PANEL SECTIONS; MEANS BONDING THE LOWER PANEL SECTION TO THE INNER PANEL; CHARACTERIZED IN THAT THE FLAPS ON THE BOTTOM WALL, TOP WALL, REAR WALL AND OUTER FRONT PANEL ARE ADAPTED TO BE FOLDED INWARDLY IN THAT ORDER; THE END FLAPS ON THE REAR WALL AND OUTER FRONT PANEL BEING DIMENSIONED AND SHAPED SO THAT THE LOWER TAB OVERLAPS THE END FLAP ON THE REAR WALL AND THE UPPER TAB OVERLAPS THE END FLAP ON THE TOP WALL WITHOUT OVERLAPPING THE END FLAP ON THE REAR WALL WHEN ALL OF THE END FLAPS ON THE CARTON ARE FOLDED INWARDLY TO CLOSE THE END OF THE CARTON AND AN ADHESIVE IS CARRIED ON THE UNDERSIDE OF THE UPPER AND LOWER TABS IN AN AREA AND LOCATION TO BOND THE UPPER AND LOWER TABS TO THE END FLAPS ON THE TOP AND REAR WALLS RESPECTIVELY.