WO1990009324A1 - Nouvel emballage a bec verseur refermable - Google Patents

Nouvel emballage a bec verseur refermable Download PDF

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Publication number
WO1990009324A1
WO1990009324A1 PCT/CA1990/000044 CA9000044W WO9009324A1 WO 1990009324 A1 WO1990009324 A1 WO 1990009324A1 CA 9000044 W CA9000044 W CA 9000044W WO 9009324 A1 WO9009324 A1 WO 9009324A1
Authority
WO
WIPO (PCT)
Prior art keywords
carton
panel
spout
joined
rectangular panel
Prior art date
Application number
PCT/CA1990/000044
Other languages
English (en)
Inventor
Gordon W. Holmes
Original Assignee
Professional Packaging Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/309,139 external-priority patent/US4921104A/en
Application filed by Professional Packaging Limited filed Critical Professional Packaging Limited
Publication of WO1990009324A1 publication Critical patent/WO1990009324A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/721—Contents-dispensing means consisting of mobile elements forming part of the containers or attached to the containers
    • B65D5/722—Contents-dispensing means consisting of mobile elements forming part of the containers or attached to the containers having an alternating movement co-operating with incised or scored openings near the bottom-edges of the bodies of tubular containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/741—Spouts for containers having a tubular body
    • B65D5/743—Spouts formed by deforming or tearing scored or incised parts of the side-wall of containers
    • B65D5/744—Spouts formed by deforming or tearing scored or incised parts of the side-wall of containers combined with swivelling devices having a bottom-wall and two side-walls

Definitions

  • the present invention relates to packaging materials, in particular to packages of flowable materials having a reclosable pouring spout.
  • the present invention provides a novel paperboard packaging structure in which the pouring spout, located in the corner of the carton, is integrally formed out of the material of construction of the package thereby considerably improving the economics and also providing a more functional reclosable spout.
  • a search has been conducted in the facilities of the U.S. Patent and Trademark Office with respect to the
  • _# a pouring spout which is manufactured separatelycapsul and glued in place along two glue laps. Not only does the die-cut spout have to be folded for gluing into position, but one of the narrow glue laps also has to be folded over a full 180°, necessitating a manual operation.
  • the novel carton structure is formed from blanks of paperboard material which are die-cut, folded and glued and then erected and filled, all by conventional modern equipment. When the package is filled for shipment by the manufacturer to a retailer, who then sells it to the consumer, the carton is secure and is not subject to accidental or other unintentional opening.
  • the whole carton structure is formed of the same material of construction and eliminates the necessity for additional metal or plastic pouring spouts.
  • the carton is readily opened by the consumer and the spout then is formed at that time by tearing along specifically located severable score or perforation lines.
  • the spout is able to be opened and closed as needed for convenient pouring out of the product.
  • the opening of the carton requires the need to remove a tamper-evident pull tab in the upper corner of the carton before the consumer may proceed to open the spout.
  • the pouring spout is defined by a plurality of panels of the paperboard material.
  • a first rectangular panel of double thickness is joined to a side panel of the carton by a first fold line extending transversely across the side panel and is dimensioned to fill a rectangular opening in the side panel adjacent an upper end thereof and through which the product is poured.
  • a first wing panel is joined to one side edge of the first rectangular panel by a second fold line and a second wing panel is joined to the other side edge of the first rectangular panel by a third fold line.
  • Each wing panel extends substantially at right angles to the first rectangular panel into the opening to define first and second side walls of the pouring spout for the entire extent of the opening of the spout to a fully- opened position by folding about the first fold line.
  • a tab panel is joined to an upper edge of the first rectangular panel by a fourth fold line and is arranged to be bent between a first position in which the tab panel extends approximately* at right angles to first rectangular panel for entry into the opening when the pouring spout is closed and a second position in which the tab panel permits product to flow over the surface thereof during pouring of the product from the carton.
  • paperboard refers to relatively-stiff materials of construction normally employed for making cartons intended to house and dispense flowable products and which can be easily folded about fold lines.
  • the term includes folding boxboard material and corrugated paperboard.
  • the carton of the present invention is useful for dispensing a wide variety of products, for example: 1. Detergents (laundry and dishes)
  • the " product concerned usually is in the form of small unit servings, such as tea bags, pouch packs for sugar and sugar substitutes, drug sundries and confections.
  • the improvement is in the construction of the spout.
  • the spout is provided in the lower region of a side wall of the carton.
  • the spout is defined by a•'first rectangular panel joined to a bottom panel of the carton by a first fold line and dimensioned to fill a rectangular opening
  • SUBSTITUTE SHEET in a side panel adjacent the lower end thereof through which the discrete packages are dispensed.
  • a first wing panel is joined to one side edge of the first rectangular panel by a second fold line.
  • a second wing panel is joined to another side edge of the first rectangular panel by a third fold line.
  • Each of the wing panels extends substantially at right angles to the first rectangular panel into the opening to define first and second side walls of the spout for the entire extent of opening of the spout to a fully opened position by folding about the first fold line.
  • the structure of the pouring spout provided in the present invention differs significantly from the prior art discussed above.
  • U.S. Patent no. 3,289,913 two arc-shaped panels are joined to a main panel and a skirt is added to each wing of the spout.
  • U.S. Patent no. 2,332,153 describes a similar arrangement of an arcuate wing but with no skirt.
  • the pouring spout in the present invention uses two wings of unique design with three special elements and no skirt function.
  • the spout has a distinct hump feature to provide a friction lock as the pouring spout is reclosed, an arcuate zone is provided carefully contoured to travel in a track feature formed in the underside of the top area of the carton and a distinct flat area is provided to engage the inside top area of the carton to prevent the spout from pulling all the way out.
  • Each spout also has arcuate pull tab attached to the upper edge which assists considerably with swift trouble-free re-opening of the pouring spout and may act as a snap-lock feature for seldom-used products, such as pancake mix, icing sugar and patching plaster, to effect closure between uses.
  • Figure 1 is a plan view of a blank for a carton provided in accordance with one embodiment of the invention
  • Figure 2A is a perspective view of a portion of the blank of Figure 1 showing the elements forming the reclosable pouring spout
  • Figure 2B is a plan view of the same portion as Figure 2A but for a modified form of the carton blank;
  • Figure 3 is a perspective view similar to Figure 2A showing flaps folded over on one another;
  • Figure 4 is a perspective view of the opposite side of Figure 3;
  • Figures 5A and 5B show folding and gluing of the top panel of the carton to form the closure
  • Figures 6A, 6B and 6C show the sequence of steps for the consumer to open the carton
  • Figures 7A and 7B are perspective views of the carton with the spout in the pouring position for unrestricted flow and for restricted flow;
  • Figures 8A and 8B are detailed perspective views of the spout after reclosure
  • Figure 9A is a sectional view of the spout while Figures 9B, 9C, 9D and 9E are detail cut-away views of the spout; 1
  • Figure 10 is a perspective view of a blank for a carton provided in accordance with another embodiment of the invention.
  • Figure 11 is a plan view of a die-cut layout to produce a number of die-cut pieces for use with the blank of Figure 10 with a minimum of -wastage of material;
  • Figure 12 is a perspective view of the top closure panel of a modified form of the structure of Figures 1 to 9;
  • SUBSTITUTE SHEET Figures 13A and 13B show assembly of the top closure panel
  • Figure 14 is a perspective view of a blank for the provision of a carton with a reclosable trough at the bottom of the carton;
  • Figures 15A, 15B and 15C are perspective and a sectional view illustrating opening of the closure
  • Figure 16 is a perspective view of the closure in the reclosed position
  • Figure 17 is a plan view of a blank for a carton provided in accordance with a further embodiment of the invention.
  • Figure 18 is a perspective view of a detail of the blank of Figure 17
  • Figure 19 is a perspective view of a detail of a carton formed from the blank of Figure 17, showing the closure with overlapping tabs;
  • Figure 20 is a perspective view of the same detail as Figure 19 with the tabs removed;
  • Figure 21 is a perspective view, with parts cut away to illustrate more detail, of the same detail as Figure 19;
  • Figure 22 is a sectional view of a carton formed from the blank of Figure 17 similar to the sectional view of Figure 9A;
  • Figure 23 is a side view of a detail of a carton formed from the blank of Figure 17, showing opening of the carton;
  • Figures 24A, 24B and 24C are two perspective and one end view of a detail of the upper closure to a carton formed from the blank of Figure 17;
  • Figures 25A and 25B are perspective views of assembly of the lower closure to a carton formed from the blank of Figure 17;
  • Figure 26 is a plan view of a portion of a blank
  • Figure 27 is a plan view of a blank for a carton provided in accordance with a yet further embodiment of the invention.
  • Figures 1 to 9D, 12 and 13A, 13B illustrate one embodiment of the invention.
  • Figure 1 shows an integral carton blank 10 constructed of paperboard, corrugated or other convenient material having a first rectangular panel 12 joined tp a second rectangular panel 14 at a fold line 16.
  • the second rectangular panel 14 is joined to a third rectangular panel 18 at a fold line 20.
  • the third rectangular panel 18 is joined to a fourth rectangular panel 22 at a fold line 24.
  • the rectangular panels 12 and 18 have the same dimensions and form the front and fear ⁇ panels of the carton while rectangular panels 14 and 22 have the same dimensions and form side panels of the carton.
  • the rectangular panel 12 is joined to a lap panel 26 at a fold line 28, which is intended to be glued to rectangular panel 22 to form the carton.
  • the rectangular panel 12 also is joined to rectangular end panels 30, 32 at fold lines 34, 36 respectively.
  • the rectangular panel 18 similarly also is joined to rectangular end panels 38, 40 at fold lines 42, 44.
  • the rectangular panel 14 is joined to a rectangular end panel 46 at fold line 48 and is provided with a particularly constructed panel 50 at the p o ther end, described in more detail below and providing the reclosable spout structure.
  • the rectangular panel 22 is joined to rectangular end panels 52, 54 at fold lines 56, 58 respectively.
  • UBSTITUTE SHEET The panels 30, 38, 46 and 52 overlap, are suitably glued to each other and cooperate to form a bottom end closure to the carton, while panels 32, 40, 50 and 54 overlap, are suitably glued to each other and cooperate to form a top end closure to the carton.
  • the panels forming the top and bottom closures may be sized to overlap completely (dotted outline) or partially, typically a 3/4 overlap (solid line) , as is known in the industry as an economic flap.
  • the panel 50 as well as cooperating parts of adjacent panels 32, 40 provide an openable and reclosable pouring spout in accordance with the invention and is particularly shown in Figures 2A, 3 and 4.
  • a modified form of the panel 50 is shown in Figure 2B, although the same reference numerals are employed to designate the same parts.
  • the panel 50 includes a first panel portion 60 which is joined to the panels 12 and 18 at perforated lines 62, 64, which, as will be seen from the later description, permit the carton to be opened manually.
  • the panel portion 60 also is joined to the panel 14 at a fold line 66 and to a flap or major spout element 68 at a fold line 70, which is partially perforated at 71.
  • the flap element 68 comprises a panel 72 in which is formed a tab 74 joined to the panel 72 at a perforation line 76.
  • a panel 78 is joined to the panel 72 at a perforated and partly-cut line 80.
  • the panel 72 also has tabs 82, 84 joined by crease lines 86, 88 respectively.
  • the cut lines 90, 92 between the tab 82 and panel 32 and between the tab 84 and the panel 40 respectively are inwardly offset to a small extent (approximately 1/16 inch) from alignment with perforated lines 62 and 64 respectively, for reasons which will become apparent below.
  • the major spout element 68 also includes a rectangular panel 94 which is joined to panel 78 at a fold line 96 and is dimensioned the same as panel 60.
  • the rectangular panel 94 is joined to two wing panels 98, 100 of mirror-image shape at fold lines 102, 104.
  • the wing panels have a specifically-designed contour 105, which includes a hump-like portion 106, a curved portion 108 and a flat portion 110.
  • the purpose of the contouring will become apparent below. As may be seen, the contouring is slightly different in the embodiment of Figure 2B.
  • a tab 112 formed in the wing panel 98 has a perforated contour line 114 and is adhesively bonded to the panel 12 at a glue spot 116 when the flap element 68 is folded about fold line 80. Adhesively bonding the wing panel 98 to the panel 12 in this manner ensures that the folded over flap element 68 lies flat during assembly and filling of the carton, while the heavily perforated line 114 permits the element 68 to ⁇ . be released upon opening of the carton.
  • FIG. 2B there is illustrated the relative locations of the elements of a blank 10 and the next adjacent blank 10 ' on a high speed die cutting machine, wherein the panels identified for blank 10' are identified by prime numerals.
  • the structure of the flap element 68 in the embodiment of Figure 2B is different from that in Figure 2A, the same principle with respect to the relative location of the blank 10 to the next adjacent blank 10' applies.
  • a small amount of material is cut away at 125 and may be removed by an autostripping device and only a minor amount of waste occurs, in regions 126, 128. If a
  • each carton blank, folded and glued has the pouring spout fully assembled and glued in position by the boxmaker. Erection of the carton, filling and sealing both top and bottom glue laps, is effected by the user company.
  • the preformed cartons are opened and filled in the normal way.
  • the cartons are erected and glued in conventional manner to provide a carton with end seals top and bottom and with the integral, reclosable pouring spout already incorporated into the upper corner of the carton 130.
  • the flowable material is loaded into the carton as the bottom and top of the carton are automatically sealed on the same filling line.
  • This latter operation is effected by folding the flap 72 inwardly about fold line 70 and the panel 46 about fold line 48 to lie at right angles to the end panel 14. Panels 32 and 40 then are folded successively about their fold lines 36 and 44 to engage and be glued to the folded-over panels 72 and 46 (see Figures 5A and 5B) .
  • the overlying portions of panels 32 and 46 are adhesively-joined to it in the regions outside the periphery of the tab 74.
  • flap 46 may be provided with an embossing 134 in the non-overlapping regions, as seen in Figure 12 and 13.
  • a similar arrangement may be made for the overlapping lower panels at both corners. While the upper and lower closures to the carton 130 are shown as formed by an approximately three- quarter overlap between the respective pairs of panels 32 and 40 and 30 and 38, fully-overlapping panels may be employed, if desired, as is well known in the packaging industry (see dotted outline in Figures 1, 5 and 6) .
  • the pouring spout is formed from an integrally-formed blank.
  • a separate die-cut element 136 may be employed in association with a blank 10'.
  • Die-cut element 136 comprises a central panel 138, equivalent to panel 94 in Figure 1, to which are connected a pair of wing panels 140, 142 through fold lines 144, 146, contoured as described above for panels 98, 100 respectively.
  • a further panel 148, equivalent to panel 78, is connected to the central panel 138 through fold line 150.
  • the die-cut element 136 may be cut in multiple numbers from a sheet of cardboard on a conventional die- cutting machine, in any convenient pattern. One pattern providing for die-cutting a multiple number of such elements with a minimum of waste is shown in Figure 11.
  • the finished component can be supplied in cartridge form or in continuous rolls ready for application.
  • the die-cut element is adhesively bonded To , the blank 10' with panel 138 overlying and bonded to panel
  • the tab 74 then is pushed down to detach it from the panel 72 at the perforations 76, leaving the remainder of the panel 72 adhered to the overlying portions of panels 32 and 40. At the same time, downward pressure on tab 74 detaches the underlying panel 78 from the panel 72 at the perforations 80. The tab 74 then is bent downwardly about fold line 70 along with panel 78 until it lies adjacent the rear of panel 60.
  • the combined tab 74, panel 78 and panel 60 then are pulled away from the carton, causing the panel 60 to become detached from the panel 72 at the perforations 71 and from the front and rear panels 12 and 18 at the perforations 62 and 64, so that the panel 60 is able to bend outwardly about fold line 66.
  • the wing panel 98 becomes detached from panel 12 by breaking of perforations 114, leaving tab 112 attached to the panel 12.
  • BSTITUTE SHEET The wing panels 98 and 100 ride in the tracks 152 and 154.
  • a limit to the extent of such outward bending is provided by engagement between the flat portions 110 of the contoured peripheries 105 of the wing panels 98 and 100 and the underside of the top panels 32 and 40 in the tracks 152 and 154.
  • the flap 78 and tab 72 may be folded out about fold lines 70 and 96 to provide a guide flap 78.
  • a further hump-like portion 107 may be provided to the contoured periphery between the curved portions 108 and the flat portions 110 to provide a friction lock for ⁇ the spout in its fully open position.
  • the extent of opening of the spout * 156 is determined by the relative lengths of the curved portions 108 and the flat portions 110 of the contoured periphery of the wing panels 98, 100.' " In the illustrated embodiment of Figure 2A, an approximately 55° opening is provided by having the curved portions 108 extend through 55° of arc before the'- lat 1 portions 110 commence. However, any desired degree of opening may be provided, generally about 40° to" about 75°, preferably about 45° to about 60°.
  • SUBSTITUTE SHEET of a quantity of material is available for the glue tab.
  • a 45° opening provides larger and stronger side wings for the pouring spout while a 65° opening provides smaller and weaker side wings, with no increase in sheet size being required in either case.
  • Reclosure of the spout 156 is readily achieved by folding back over the panel 78 and bending panel 60 inwardly about fold line 66 until the fold line 96 is flush with the top edge.
  • the contoured periphery of the wing panels 98, 100 rides in the tracks 152, 154.
  • the humped regions 106 of the contoured peripheries provides a good friction lock for the spout in the closed position to guard against accidental opening of the carton 130, even if the carton is accidentally tipped over (see detail of Figure 8A) .
  • the tab 74 then may be pulled to re-open the carton, as access to the contents of the carton 130 is desired.
  • the tab 74 may be pushed through the opening 158, which may be provided with convexly- contoured region 160 to overly the adjacent edge of the tab 74, thereby forming a temporary locking feature for more secure closure for seldom-used products (see detail of Figure 8B) .
  • the carton 130 of the present invention is a secure structure when initially formed.
  • the carton 130 is readily produced at high speed using conventional automated carton presses for printing, die- cutting, stripping, gluing, and packing by the boxmaker.
  • the completed carton with the integral spout can be readily filled and sealed on conventional high-speed equipment providing ease and economy of usage. Opening of the carton provides an integral spout 156 formed of the material of construction of the carton, which permits full-width or controlled pouring of product from the corner of the carton with no residual waste.
  • the spout 156 is specifically designed to provide a readily openable but reclosable structure which reliably delivers product and provides a secure structure when the carton 130 is not in use. This arrangement greatly decreases product contamination, infestation and accidental poisoning of pets and young children.
  • Elements of the structure ensure that the spout is openable only to a controlled extent, is closeable to a friction-locked enclosure and movement between the fully open and closed structure is guided.
  • the spout is located at the bottom.
  • an ideal serving trough is made possible for a growing number of single serviee type products, many of them in familiar pouch or sachet form. Tea bags, packets of sugar and sugar substitutes, condiments and various medications in pouch form all qualify. Certain types of wrapped candies and lozenges also may benefit from the new one-at-a-time dispenser that is provided.
  • This new structure opens up unique and superior packaging presentations for all these products.
  • the new carton makes possible a quick dump-fill box for tea bags that can remain on the kitchen cupboard shelf, while the carton is popped open quickly to remove one or two tea bags. This provides new convenience and extends the usefulness and advertising value of the package in the home.
  • a carton is produced from a blank 200 having a rectangular panel 202 joined at one side edge to a * glue lap panel 204 by a fold line 206 and at the other side edge to a panel 208 by a fold line 210.
  • a blank 200 having a rectangular panel 202 joined at one side edge to a * glue lap panel 204 by a fold line 206 and at the other side edge to a panel 208 by a fold line 210.
  • the panel 202 is joined to panels 212 and 214 respectively by fold line 216, 218.
  • the panel 208 is joined to a rectangular panel 220 by a fold line 222, which is joined to a panel 224 by a fold line 226.
  • the rectangular panels 202 and 220 are of the same size and form the front and rear panels of the carton, while the panels 208 and 224 form the end panels of the carton.
  • the panel 208 is joined to a panel 228 by a fold line 230 and to a tab panel 232 from which the closure is formed, as described below.
  • the rectangular panel 220 is joined to panels 234 and 236 by fold lines 238, 240 and panel 224 is joined to panels 242 and 244 by fold lines 246, 248.
  • the panels 212, 232, 234 and 242 combine to provide a bottom end closure to the carton while panels 214, 228, 236 and 244 combine to provide a top closure to the carton.
  • the tab panel 232 comprises a panel 250 which is joined to the panel 208 by a perforated line 252 and to the panels 202 and 220 by perforated lines 254 and 256.
  • the perforations 254 and 256 are extended inwardly a short distance at 258, 260 to provide a track, as described below.
  • a tab 262 is provided in the panel 208 with a perforated line outline 264 at its sides and joined to the panel 208 by a fold line 266.
  • the panel 250 is joined to a panel 268 by a fold line 270, while panel 270 in turn is joined to a panel 272 by a fold line 274.
  • the panels 268 and 272, which are of substantially the same dimension, are separated from the panels 212 and 234 by cuts 276, 278.
  • Panel 272 is joined to a further panel 280 by a fold line 282.
  • the panel 280 is of substantially the same dimensions as panel 250 and has wing panels 284, 286 joined thereto at the side edges by fold lines 288, 290.
  • the wing panels 284, 286 are separated from the
  • the cut line 288 extends into the panel 212 to form tab 292 which is joined to the wing panel 284 by a perforated line 294.
  • the wing panels 284 and 286 have a contoured surface 296, including a humped portion 298, a curved portion 300 and a straight portion 302, which acts as stops for the spout, as will become apparent below.
  • the tab panel 232 is folded about fold line 274 so that panel 280 overlies panel 250 and panel 272 overlies panel 268.
  • these panels are adhered to each other by glue lines 304, 306 while the tab 292 is adhered to the panel 212 by glue spot 308 to maintain the folded over panels flat during subsequent erection and filling of the carton.
  • the carton 200 is folded and glued and formed with the spout or trough as a composite part of the package, .
  • the carton then is filled in conventional manner and provides a ready-to-ship sealed carton 310.
  • the spout or trough 312 is opened first by pushing on tab 262 to break the perforations 252 and 264 and to bend the tab inwardly about fold line 266.
  • a finger or thumb then is inserted into the opening left by the bent away tab 262 and panel 250 is pulled outwardly, causing perforations 252, 254, 256 and 294 to break and then the panel 250 to bend about fold line 270.
  • perforations 252, 254, 256 and 294 to break and then the panel 250 to bend about fold line 270.
  • the contoured peripheries 296 of the wing panels 284 and 286 ride in and are guided by the slots formed by perforations 258 and 260.
  • the outward extremity of movement of the spout 312 is determined by engagement between the flat portions
  • FIGs 17 to 25 illustrate a blank and carton formed therefrom embodying the same principles as the embodiment described alone with respect to Figures 1 to 13, with certain refinements for specific purposes, as described below, and represents the current best mode known to the inventor for carrying out the invention. For this reason, the same reference numerals are employed to designate the same elements as are employed with respect to Figures 1 to 13.
  • a first modification relates to the contour of the tab 80.
  • This contour includes, from the fold line 96, an initial straight portion 310 and the curves inwardly to the fold line 80.
  • This arrangement ensures that the wing elements 98 ride in the tracks 152 and 154 during opening and closing of the carton.
  • the tabs 118, 120 have been decreased in size so that, rather than fully overlapping in the assembled carton illustrated in Figures 1 to 13, they only overlap partially in the carton assembled from the blank of Figure 17 (see Figure 19) .
  • the partially overlapping tabs 118, 120 still provide an effective closure and
  • SUBSTITUTE SHEET are readily removed as the first step of opening the carton (see Figures 6A, 20) .
  • the effect of the decrease in size of the tabs is to decrease the overall height of the panel 50, enabling less blank-to-blank wastage to be achieved, (compare Figures 1 and 17) .
  • a further modification is to provide an embossing 312, 314 to each of the tabs 82 and 84.
  • the effect of these embossings 312, 314 is that the tabs 82 and 84 are deflected inwardly of the carton formed from the blank 17 about their respective fold line ⁇ 86 and 88, so as to form deeper tracks 152 and 154 in which the contoured peripheries 105 of the wing panels 98, 100 ride (see Figures 21 and 22) .
  • This arrangement assists in ensuring that the panels 98, 100 are correctly located at all times and provide a smoother and more secure opening and closing of the carton at all times ⁇ ..
  • embossings 318, 320 may be provided on panels 46 and 52 respectively * and panel 30 may be contoured at 322 and 324 to accommodate the embossings 318, 320 (see Figures 25A and 25B) .
  • the glue lap panel 26 is provided with tabs of glue
  • glue-lines 333 may be provided along each corner to further assist in such sealing.
  • Figures 1 and 17 are suitable for the provision of cartons of a wide variety of sizes and capacities. However, certain additional modifications are possible, depending on the carton size.
  • Figure 26 shows a detail of a blank 10 particularly useful for large size cartons, such as are commonly employed for breakfast cereals. With such a size, it is possible to avoid much of the wastage 125 (see Figure 2B) to a small stripping area 338. Notches 334 and 336 are provided to ensure complete separation, on both sides, of the spout assembly and problem-free fold-over and gluing of this portion to the main body of the carton, as shown in Figure 10.
  • Figure 27 illustrates a blank 10 for a small sized carton. The only significant difference from the carton of Figure 17, is that tabs 82 and 84 are absent. However, the embossings 312 and 314 are retained to ensure proper tracking of panels 98, 100 in the assembled carton.
  • the spout closes easily and securely in a split second. Normally, in closing, tab 78 is inserted into the opening and tab 74 is left out to provide an easier "grip feature" to 35 facilitate re-opening of the carton.
  • a further design advantage of this invention is the provision of tab 74 which is wider than the opening left by removal of tabs 118, 120 on the top corner of the container. In this way tab 74 provides a bumper or stopping means to prevent the spout from being accidentally pushed into the box interior.
  • tab 74 may also be used as a locking means to secure certain types of products that may be hydroscopic or subject to mold, infestation, etc. Products, such as patching plaster, which are seldom used also can be more securely closed between uses. Tab 74 can simply be folded down into opening and snaps into locking engagement with convex contour
  • a further design objective in the provision of panel 72 is the provision of a means for keeping the side panels of the
  • a further annoyance for the consumer arises if a pouring spout is opened and the whole spout dislodges and comes out in your hand.
  • An extremely large flat area on both side walls of the spout is provided in our preferred design which virtually eradicates this problem.
  • a further design function of glue tab 112 (which remains permanently bonded to the inside wall of the carton) is to provide an additional "bumper feature" to further
  • SUBSTITUTE SHEET decrease the possibility of the spout being pushed inside the carton upon closure.
  • Every consumer feature and advantage represents a marketing advantage to the user company that totals up to expanding sales and improved market share in a highly competitive marketplace.
  • SUBSTITUTE SHEET inhibits the use of electronic metal detectors on the filling line. This fact alone, is a great boon to consumer protection and decreased liability. 20.
  • the net result of these various features is the provision of a practical, functional pouring spout with many useful features at only a small additional cost to a conventional folding carton with full end seal flaps top and bottom. When compared with the additional cost of metal pouring spouts, a considerable saving is realized by the user company..
  • the present invention provides a novel carton structure which is, at the same time, practical, functional and economically feasible, quite unlike the prior art proposals as seen in the prior art of which the applicant is aware and cited above. That the present invention provides this unique combination of results is apparent from the following discussion. A. Practical Considerations
  • a traditional folding carton manufacturer is able to print, die-cut and glue the integral reclosable pouring spout concept of the invention when incorporated into the design of a modified end-seal carton.
  • a number of design features make this entirely feasible on high speed equipment.
  • the major portion of the pour spout is formed by extending one of the top minor glue laps, as shown for example in Figure 2B.
  • Tab 78 may be hingedly joined to panel 60 using a central cut with deep perforations on each side to ensure two objectives, namely (a) accuracy of folding for the pour spout assembly to ensure gluing in the proper location every time, (a crease, for example, is capable of twisting and deflecting to a wide range of locations) ; (b) panel 72 and tab 78 are releasably joined together so that, on opening when
  • SUBSTITUTE SHEET panel can interfere with filling heads used in filling the product into the carton. In addition, the panel can seriously interfere with trouble-free opening of the spout. This problem is a weakness of many prior art structures.
  • the present invention encompasses two solutions to this problem.
  • a micro drop of adhesive may be applied on the carton blank at 116. This very lightly adheres the one side panel of the spout to the inside major wall of the carton.
  • the preferred embodiment is to die-cut a small glue tab 112. This is lightly joined by small nicks to the side panel 98 of the spout. Tab 112 then is securely bonded to the inside wall of the carton at 116. When the spout is opened, the perforations 114 give way and the glue tab 112 remains glued in position. The shape and location of the tab is such that it will not jeopardize the strength or function of the side panel 98 of the pouring spout.
  • tab 112 provides an additional "stopper means" when the spout is in the closed mode.
  • stopper means In addition to the stopper feature, there is a friction locking feature as the peninsula- shaped arm cams over the semi-circular shaped glue tab 112.
  • the spout is able to open widely, to approximately 50° to 60°, without consuming any additional material. By so doing, the depth of the spout can be decreased to conserve paperboard yet product flow remains totally satisfactory.
  • the carton with the pouring spout must be capable of filling and sealing in the user company's plant, automatically and at high speed.
  • the present invention achieves this result.
  • the structure of the present invention is such that the completed carton with the "built-in spout" looks and performs in substantially the same way as an end-seal carton without the spout.
  • the pour spout does not interfere.
  • the pouring spout, including both side panels remains firmly against the inside walls of the carton with no interference during filling.
  • the package of the invention provides for a slightly shorter minor glue lap
  • the present invention also includes the potential manufacture of the pouring spout as a separate piece, either in sheet form or roll form, for application to the inside of the carton blank at the gluing stage which is the final stage of manufacture.
  • the former would be magazine fed and the latter roll fed on the gluer.
  • This embodiment is a potential economy measure only applicable on very large volume production.
  • the remainder of the design features are incorporated into the carton blank, including tabs 118', 120 ' , panel 72' with tab 74' and tabs 82 ' and 84' as well as the necessary creases and perforations.
  • the user company must glue top and bottom major glue laps and also, as a minimum, the one minor glue lap adjacent to the pouring spout.
  • all minor glue laps should be glued to produce an improved level of product protection.
  • Tab 74 is kept clear of glue, but the rest of panel 72 is glued, particularly at the two sides including tabs 82, 84 and adjacent areas thereto. This gluing is provided in order that panel 72 remains glued to the underside of the two top major glue laps. The adhesive for the bonding in the area to occur, also ma, be applied to the underside of each major glue flap in the appropriate location, adjacent tabs 82 and 84.
  • Tab 74 in many cases may be printed and varnished, so that traditional resin glue does not adhere and thereby keep it from bonding to the underside of tab 118. This arrangement is the design option for coarser products, where sifting is no problem.
  • Coatings and laminations of plastic film, foil, etc. also may be used in combination with the pour spout invention for products that are hydroscopic, or where special barrier properties are needed for grease, oils, strong chemicals, etc. 12.
  • a further embodiment of this invention includes provision for the use of the pouring spout in conjunction with products, such as breakfast cereals, that come packaged in a "bag-in-a-box" form of packaging.
  • this embodiment of the invention includes the provision of an arcuate perforation in the inner bag adjacent to the pouring spout in the upper corner of the box.
  • the arcuate shaped flap within the perforation are spot glued with hot melt adhesive to the inner main wall of the pouring spout.
  • the arc shaped flap of the inner bag would be sheared open and the contents ready for pouring.
  • the carton needs to be bottom loaded, so that the weight and bulk of the product presses the bag and the adhesive against the main panel of the pouring spout.
  • SUBSTITUTE SHEET A pull open tear strip attached to the bag and projecting into the spout area is also " a further possibility. As the box is opened in the prescribed manner, the consumer then would simply pull the brightly colored tear strip, to zip open a generous-sized opening in the top corner of the bag adjacent to the spout.
  • the length of the end seal panels has been cut back by as much as one-half to three-quarters of an inch depending upon the width of the carton.
  • a conventional end-seal carton may currently be running twelve up on the sheet, with close tolerances to the full size of the press. If the sheet size is increased even an inch or two in one direction, it may no longer be possible to run twelve up on the press. One row of cartons would have to be eliminated, reducing the number on the sheet to eight up. This means that the output of that press has been reduced by
  • the depth may vary from one inch to one and a half inches, depending on carton size and the desired flow of the contents.
  • the pouring spout of this design can be opened without the need for a knife or any other instrument. Simple manual opening is made possible, thus eliminating hazards and liability suits.
  • the present invention provides a novel carton structure which is formed from an integral blank and having an integral pouring spout of particular construction permitting multiple opening and closings, and is industrially applicable to house many types of product, as explained earlier, for sale. Modifications are possible within the scope of this invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

L'invention concerne une nouvelle structure en carton utile pour une variété de produits que l'on peut verser, dotée d'un bec verseur solidaire. Le carton est formé par découpage matriciel, collage, façonnage et remplissage d'une ébauche classique. On réalise en premier lieu une fermeture solidaire sûre. Le carton est facilement ouvert et le bec (50) est formé par déchirure le long de lignes de perforation préformées (62, 64, 76, 80) disposées spécifiquement à cet effet. Une fois le carton ouvert, on peut verser un produit sur tout la largeur du carton par ledit bec. La construction du bec permet une ouverture régulée, la fermeture jusqu'à une fermeture verrouillée par frottement ainsi qu'un mouvement guidé entre ceux-ci.
PCT/CA1990/000044 1989-02-13 1990-02-13 Nouvel emballage a bec verseur refermable WO1990009324A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA590,930 1989-02-13
CA590930 1989-02-13
US07/309,139 US4921104A (en) 1988-02-12 1989-02-13 Package with reclosable pouring spout

Publications (1)

Publication Number Publication Date
WO1990009324A1 true WO1990009324A1 (fr) 1990-08-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1990/000044 WO1990009324A1 (fr) 1989-02-13 1990-02-13 Nouvel emballage a bec verseur refermable

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Country Link
WO (1) WO1990009324A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622303A1 (fr) * 1993-04-30 1994-11-02 I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.p.A. Procédé pour fabriquer un empallage, ébauche pour cette fabrication et emballage ainsi réalisé
WO2000076867A1 (fr) * 1999-06-10 2000-12-21 Andre Venter Recipient distributeur
WO2002085721A1 (fr) * 2001-04-19 2002-10-31 Juan Inazio Hartsuaga Uranga Boite amelioree munie d'un bec verseur et son procede de fabrication
ES2200634A1 (es) * 2001-04-19 2004-03-01 Uranga Juan Inazio Hartsuaga Procedimiento de fabricacion y caja perfeccionada con pico vertedor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528349A (en) * 1939-05-04 1940-10-28 Kay Brothers Ltd Improvements in containers of cardboard and the like material
US3207380A (en) * 1963-08-28 1965-09-21 Waldorf Paper Prod Co Dispenser cartons
US3289913A (en) * 1965-02-16 1966-12-06 Gulf States Paper Corp Dispensing carton with recloseable pouring spout
US3362612A (en) * 1966-03-24 1968-01-09 Harry G. Mohler Carton with integral spout
FR2304544A1 (fr) * 1975-03-21 1976-10-15 Unic Ste Nle Cartonnages Perfectionnements apportes aux boites verseuses
US4382526A (en) * 1979-04-24 1983-05-10 Pack Image Incorporated Dispensing container and blanks therefor
EP0114318A2 (fr) * 1983-01-21 1984-08-01 CP Schmidt Verpackungs-Werk GmbH & Co. KG Boîte pliante
DE8812107U1 (fr) * 1988-09-24 1988-11-17 Efkadruck Gmbh, 7218 Trossingen, De
DE8812492U1 (fr) * 1988-10-04 1988-12-08 Magna-Werbung Gmbh, 8000 Muenchen, De
EP0295503B1 (fr) * 1987-06-15 1991-08-28 Efkadruck Gmbh Boîte verseuse avec une paroi avant rabattable

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528349A (en) * 1939-05-04 1940-10-28 Kay Brothers Ltd Improvements in containers of cardboard and the like material
US3207380A (en) * 1963-08-28 1965-09-21 Waldorf Paper Prod Co Dispenser cartons
US3289913A (en) * 1965-02-16 1966-12-06 Gulf States Paper Corp Dispensing carton with recloseable pouring spout
US3362612A (en) * 1966-03-24 1968-01-09 Harry G. Mohler Carton with integral spout
FR2304544A1 (fr) * 1975-03-21 1976-10-15 Unic Ste Nle Cartonnages Perfectionnements apportes aux boites verseuses
US4382526A (en) * 1979-04-24 1983-05-10 Pack Image Incorporated Dispensing container and blanks therefor
EP0114318A2 (fr) * 1983-01-21 1984-08-01 CP Schmidt Verpackungs-Werk GmbH & Co. KG Boîte pliante
EP0295503B1 (fr) * 1987-06-15 1991-08-28 Efkadruck Gmbh Boîte verseuse avec une paroi avant rabattable
DE8812107U1 (fr) * 1988-09-24 1988-11-17 Efkadruck Gmbh, 7218 Trossingen, De
DE8812492U1 (fr) * 1988-10-04 1988-12-08 Magna-Werbung Gmbh, 8000 Muenchen, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622303A1 (fr) * 1993-04-30 1994-11-02 I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.p.A. Procédé pour fabriquer un empallage, ébauche pour cette fabrication et emballage ainsi réalisé
WO2000076867A1 (fr) * 1999-06-10 2000-12-21 Andre Venter Recipient distributeur
WO2002085721A1 (fr) * 2001-04-19 2002-10-31 Juan Inazio Hartsuaga Uranga Boite amelioree munie d'un bec verseur et son procede de fabrication
ES2200634A1 (es) * 2001-04-19 2004-03-01 Uranga Juan Inazio Hartsuaga Procedimiento de fabricacion y caja perfeccionada con pico vertedor

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