US3750931A - Carton opening means - Google Patents

Carton opening means Download PDF

Info

Publication number
US3750931A
US3750931A US00263865A US3750931DA US3750931A US 3750931 A US3750931 A US 3750931A US 00263865 A US00263865 A US 00263865A US 3750931D A US3750931D A US 3750931DA US 3750931 A US3750931 A US 3750931A
Authority
US
United States
Prior art keywords
carton
slit
closure flaps
panel
hopper
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US00263865A
Inventor
R Dick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WestRock Minnesota Corp
Hoerner Waldorf Corp
Original Assignee
Hoerner Waldorf Corp
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
Application filed by Hoerner Waldorf Corp filed Critical Hoerner Waldorf Corp
Application granted granted Critical
Publication of US3750931A publication Critical patent/US3750931A/en
Assigned to WALDORF CORPORATION, A CORP. OF reassignment WALDORF CORPORATION, A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHAMPION INTERNATIONAL CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/02Rigid 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 by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/0227Rigid 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 by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed by inward folding of flaps and securing them by heat-sealing, by applying adhesive to the flaps or by staples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00Construction of rigid or semi-rigid containers
    • B31B2120/30Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • B31B50/76Opening and distending flattened articles
    • B31B50/80Pneumatically
    • B31B50/802Pneumatically for setting-up boxes having their opening facing upwardly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S229/00Envelopes, wrappers, and paperboard boxes
    • Y10S229/90Envelopes, wrappers, and paperboard boxes including means to facilitate handling by a mechanical apparatus during manufacturing or filling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S229/00Envelopes, wrappers, and paperboard boxes
    • Y10S229/915Stacking feature
    • Y10S229/917Stacking of collapsed container or blank

Definitions

  • This invention relates to an improvement in carton opening means and deals particularly with a construction useful in improving carton tightness.
  • the flat folded cartons are usually placed in face contact in a suitable hopper.
  • the cartons are urged toward the discharge end of the hopper by suitable means.
  • This may be some sort of carton follower which urges the stack of cartons toward the open end of the hopper, or the hopper may be supported on angle which is either vertical or sufficiently inclined so that the stack of cartons will slide toward the open end of the hopper by gravity.
  • suction cups are often used to pull the foremost carton from the stack and to direct it be tween suitable guides capable of folding it into tubular rectangular form.
  • suction cups are often used to pull the foremost carton from the stack, these suction cups often tend to bow both sides of the carton instead of the front side only, causing the cartons to jam rather than to open.
  • generally U-shaped notches are often cut into the closure flaps of one of the foremost panels, and fingers are provided in alignment with these notches; these fingers engaging one of the closure flaps on the rear side of the carton rather than the forward side thereof.
  • the notched flaps of the cartons are usually folded beneath an opposing flap in order to conceal the notch when the cartons areclosed.
  • the notches are usually formed in the closure flaps of one of the wider panels as this simplifies the opening operation.
  • the notches thus usually occur between the ends of the closure flaps on the side walls of the carton which are first folded into coplanar relation before the wider flapsare folded. This results in an opening in the flap structure which simplifies the sifting of the carton contents. It is this problem which the present structure is designed to eliminate.
  • This provides a pair of end abutting tabs or doors which may be folded out of the plane of the flaps in which they are formed.
  • the cut lines are arranged so that the carton retaining fingers engage the center portions of the flaps so that when the carton panels on the forward side of the foremost carton of the stack are engaged by suction cups, the retaining fingers may merely fold the tabs apart sufficiently to allow the retaining fingers to pass therebetween, and to engage the opposite flap on the rear side of this carton.
  • the normal resiliency of the paperboard tends to return the tabs into edge abutting relation, eliminating the opening through this flap which was previously caused by the notch formed therein.
  • the adhesive on the under side of outer flap adheres pin or finger opening to outer flap which further improves carton tightness.
  • FIG. 1 is a diagrammatic perspective view of a carton in squared up position forwardly of a stack of flat folded cartons.
  • FIG. 2 is a diagrammatic top plan view of a series of flat folded cartons in a hopper showing the front carton in partially opened position as it is engaged by the suction cups.
  • FIG. 3 diagrammatically illustrates the foremost carton as it is being opened up, and showing diagrammatically a pocket into which the squared up carton is to be drawn.
  • FIG. 4 is a perspective view of an end of the carton after three of the four flaps have been closed.
  • FIG. 5 is a diagrammatic view of the blank illustrating the construction thereof.
  • FIG. 6 is an enlarged diagrammatic view of the tabs or doors .32.
  • the carton A illustrated in FIG. 5 of the drawing is generally conventional .in design.
  • the carton includes .a .frontpanel 10, a side wall panel 11, a rear wall panel l2, and a second side wall panel .13.
  • Aglue flap I4 is hinged to one end of the blankas to the .frontpanel .10.
  • the various panels and the glue flap are connected :by parallel fold lines 15.
  • Top closure flaps 16, 17,19 and 20.arelfoldably connected to the upper'edge of the wallpanels 10, 11, .112 and 13 respctively along a'fold line .21..Similar closure flaps .22, 23, 24 and 25 are :foldahly connected to the loweredgesof the panels 10, 11,12 and 13alongtafold line 26.
  • the fold lines 21 and .26 are parallel and at right angles to the fold lines 15.
  • the terms upper edge" and lower edge are merely for simplicity of description, as the wall panels may extend horizontally or vertically.
  • Cut lines 27 may extend into the closure flaps 16 and 22 in right angular relation to the upper and lower edges 29 and 30 of the blank. These cut lines 27 extend only a short distance into the flaps terminating in spaced relation to the fold lines 21 and 26. Second cut lines 31 intersect the inner ends of the cut lines 27 and extend parallel to the fold lines 21 and 26. The cut lines 31 normally extend an equal distance on opposite side of the cut lines 27 in order to provide a pair of tabs or doors 32 of rectangular form between the cut lines 31 and the adjoining blank edge 29 or 30. Actually, it is not necessary that the cut lines 31 extend parallel to the fold lines 21 and 26 as they could be V-shaped in form or rounded in form as long as they form opposed end abutting tabs or doors.
  • the ends of the cut lines 30 may be connected to the edges 29 or 30 of the blank by parallel fold lines 33.
  • the fold lines 33 are employed'depends upon the flexibility of the paperboard, as if the paperboard is sufficiently flexible, the tabs will flex when engaged to produce the same result. Whether or not the fold lines 33 are used also depends upon the length of the cut lines 31, as any increase in the length of these cuts lines correspondingly increases the flexibility of the tabs 32.
  • FIGS. 1 to 3 disclose a hopper which is indicated generally by the letter B.
  • the hopper includes sides 34 between which the carton blanks A are stacked.
  • the hopper must include a bottom support such as 35.
  • a retaining pin 36 is supported at the forward end of the hopper projecting upwardly from the end of the bottom support 35.
  • a similar retaining pin 37 projects downwardly from a support 39 which is connected to the hopper in any suitable manner, not illustrated in the drawings.
  • These pins are designed to engage the flaps 16 and 22 and extend along the cut lines 27, the pins 36 and 37 terminating short of the cut lines 31.
  • Suction cups 40 are mounted upon tubular supports 41 normally mounted on the ends of arms 42 pivotally supported at a remote point 43. Means are provided to oscillate the arms 42 in a manner to move the suction cups 40 toward and awayfrom the stack of flat folded cartons A in the hopper. As the suction cups 40 are oscillated away from the hopper, the carton blanks are squared up by means of suitable guides 44 and 45. As the cartons reach rectangular form, they are normally engaged in pockets 45 mounted upon a conveyor 46. When the cartons are drawn into the pockets 45, the suction cups 40 are disengaged from the carton blanks by releasing the suction, and the cartons are carried to the closing and filling apparatus.
  • the only purpose of the description of the apparatus is to show the purpose of the carton structure.
  • the retaining pins 36 and 37 flex the tabs or doors 33, permitting the front wall of the carton to be drawn forwardly while the retaining pins still engage the flaps on the rear side of the carton to restrain it in place until the cartons are at least partially open.
  • the retaining pins will flex the rear flaps l9 and 24 sufficiently to allow the carton to pass the retaining pins.
  • the retaining pins will not pass the rear flaps until the carton is opened sufficiently to insure the proper squaring of the tubular cartons.
  • a carton comprising:
  • front and rear panels foldably connected by side panels
  • front and rear closure flaps hingedly connected to an edge of said front and rear panels respectively and adapted to fold into superimposed relation
  • said front panel closure flap including a first slit extending from the edge of said front panel closure flap toward the line of hinge connecting the same to said front panel and perpendicular thereto, said slit terminating short of the line of hinge,
  • a second slit extending generally parallel to said line of hinge and intersecting the end of said first slit, whereby the area between said second slit and said edge of said front panel closure flap froms a pair of end abutting tabs.
  • front panel and a foldably connected side wall in coplanar relation in flat condition of said carton and a rear panel and a foldably connected second side wall in coplanar relation in flat condition of said carton, said front panel being foldably connected to, and in face contact with, said second side wall and said rear panel being foldably connected to, and lying rearwardly of, said first side wall panel,
  • closure flaps hingedly connected to the opposite ends of said front panel, said rear panel, and said first and second side walls along hinge lines,
  • front closure flaps hingedly connected to front panel having lug receiving gates therein in the ends of said front closure flaps comprising:
  • first slits extending into the end edges of said front closure flaps in aligned relation intermediate the parallel sides of said front closure flaps, said slits extending normal to the front closure flap ends and terminating short of the lines of hinge connecting said front closure flap to said front panel,

Landscapes

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

Abstract

A pair of opposed flaps are provided in closure flaps connected to a panel of a paste end carton to permit the passage of retaining fingers while squaring up the cartons from a flat folded state as the cartons are withdrawn from a hopper.

Description

Unitefi States Patent 1 1 Dick Aug. 7, 1973 1 CARTON OPENING MEANS 2,746,363 5/1956 Anderson 93/53 R 2,999,344 9/1961 Clanin et a1. 93/53 SD X [75] Invent? Mmneapmls 3,411,695 11/1968 Cupo 229/37 R 3,412,922 11/1968 Miller et al. 229/37 R [73] Assigneez Hoerner Waldorf Corporation, St. 3,580,476 5/1971 Cannon 229/37 R Paul, Minn. Primar Examiner-Davis T. Moorhead 22 F l d: 19 1972 y 1 l e June Attorney-Robert M. Dunning [21] Appl. No.: 263,865
52 us. c1 229/37 R, 93/53, 221/211 [571 ABSTRACT [51] Int. Cl. 865d 5/02 A v A 1 pair of opposed flaps are provided in closure flaps [58] 4 33 connected to a panel of a paste end carton/t0 permit the passage of retaining fingers while squaring up the 5 References Cited cartons from a flat folded state as the cartons are with- UNITED STATES PATENTS 11/1954 Malhiot 93/53 R drawn from a hopper.
6 Claims, 6 Drawing Figures CARTON OPENING MEANS This invention relates to an improvement in carton opening means and deals particularly with a construction useful in improving carton tightness.
BACKGROUND OF THE INVENTION In the opening of flat folded cartons, usually of the paste end type, the flat folded cartons are usually placed in face contact in a suitable hopper. The cartons are urged toward the discharge end of the hopper by suitable means. This may be some sort of carton follower which urges the stack of cartons toward the open end of the hopper, or the hopper may be supported on angle which is either vertical or sufficiently inclined so that the stack of cartons will slide toward the open end of the hopper by gravity. In order to open the cartons from their flat state, suction cups are often used to pull the foremost carton from the stack and to direct it be tween suitable guides capable of folding it into tubular rectangular form. y
In removing the flat cartons from the hopper, suction cups are often used to pull the foremost carton from the stack, these suction cups often tend to bow both sides of the carton instead of the front side only, causing the cartons to jam rather than to open. In order to prevent this from occurring, generally U-shaped notches are often cut into the closure flaps of one of the foremost panels, and fingers are provided in alignment with these notches; these fingers engaging one of the closure flaps on the rear side of the carton rather than the forward side thereof. As a result, when the suction cups engage the front side of the foremost carton, the rear side of the carton is slightly retarded to overcome the tendency of the rear side of the carton to bow with the forward side thereof as the front of the carton is engaged by the suction cups. These fingers are usually adjustably fixed in position, and as the carton squares up, the closure flaps on the rear side of the carton may merely flex sufficiently to pass by the restraining fingers.
In closing the cartons, the notched flaps of the cartons are usually folded beneath an opposing flap in order to conceal the notch when the cartons areclosed. When the cartons are rectangular rather than square, the notches are usually formed in the closure flaps of one of the wider panels as this simplifies the opening operation. The notches thus usually occur between the ends of the closure flaps on the side walls of the carton which are first folded into coplanar relation before the wider flapsare folded. This results in an opening in the flap structure which simplifies the sifting of the carton contents. It is this problem which the present structure is designed to eliminate.
SUMMARY OF THE INVENTION I have found that by substituting a foldable tab structure for the notches normally used, an improvedcarton structure may result. In the present structure, the U- shaped or generally semi-circular notches are eliminated and in their place, the closure flaps on the fore most walls are cut to. provide a .pair of opposed tabs foldably connected to the flaps in such a manner asto provide a pair of end abutting doors. This is accomplished by providing a out line at right angles to the end of the closure flaps midway between the side edges thereof, and providing a second cut line intersecting the inner end of the first out line and extending generally parallel to the end edge of the closure flaps in question. This provides a pair of end abutting tabs or doors which may be folded out of the plane of the flaps in which they are formed. The cut lines are arranged so that the carton retaining fingers engage the center portions of the flaps so that when the carton panels on the forward side of the foremost carton of the stack are engaged by suction cups, the retaining fingers may merely fold the tabs apart sufficiently to allow the retaining fingers to pass therebetween, and to engage the opposite flap on the rear side of this carton. As the cartons are squared up, filled and closed, the normal resiliency of the paperboard tends to return the tabs into edge abutting relation, eliminating the opening through this flap which was previously caused by the notch formed therein. The adhesive on the under side of outer flap adheres pin or finger opening to outer flap which further improves carton tightness.
These and other objects and novel fetures of the present invention will be more clearly and fully set forth in the following Specification'and Claims.
BRIEF DESCRIPTION OF THEDRAWINGS FIG. 1 is a diagrammatic perspective view of a carton in squared up position forwardly of a stack of flat folded cartons.
FIG. 2 is a diagrammatic top plan view of a series of flat folded cartons in a hopper showing the front carton in partially opened position as it is engaged by the suction cups.
FIG. 3 diagrammatically illustrates the foremost carton as it is being opened up, and showing diagrammatically a pocket into which the squared up carton is to be drawn.
FIG. 4 is a perspective view of an end of the carton after three of the four flaps have been closed.
FIG. 5 is a diagrammatic view of the blank illustrating the construction thereof.
FIG. 6 is an enlarged diagrammatic view of the tabs or doors .32.
BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT In the following description, thedepiction of the apparatus for squaring up the carton is merely diagrammatic. Apparatuses for accomplishing this operation are well known, and the apparatus varies with different manufacturers. The illustration is designed merely to indicate the purpose of the carton construction which is the subject of the present invention.
The carton A illustrated in FIG. 5 of the drawing :is generally conventional .in design. The carton includes .a .frontpanel 10, a side wall panel 11, a rear wall panel l2, and a second side wall panel .13. Aglue flap I4 is hinged to one end of the blankas to the .frontpanel .10. The various panels and the glue flap are connected :by parallel fold lines 15.
Top closure flaps 16, 17,19 and 20.arelfoldably=connected to the upper'edge of the wallpanels 10, 11, .112 and 13 respctively along a'fold line .21..Similar closure flaps .22, 23, 24 and 25 are :foldahly connected to the loweredgesof the panels 10, 11,12 and 13alongtafold line 26. The fold lines 21 and .26 are parallel and at right angles to the fold lines 15. The terms upper edge" and lower edge are merely for simplicity of description, as the wall panels may extend horizontally or vertically.
Cut lines 27 may extend into the closure flaps 16 and 22 in right angular relation to the upper and lower edges 29 and 30 of the blank. These cut lines 27 extend only a short distance into the flaps terminating in spaced relation to the fold lines 21 and 26. Second cut lines 31 intersect the inner ends of the cut lines 27 and extend parallel to the fold lines 21 and 26. The cut lines 31 normally extend an equal distance on opposite side of the cut lines 27 in order to provide a pair of tabs or doors 32 of rectangular form between the cut lines 31 and the adjoining blank edge 29 or 30. Actually, it is not necessary that the cut lines 31 extend parallel to the fold lines 21 and 26 as they could be V-shaped in form or rounded in form as long as they form opposed end abutting tabs or doors. If desired, the ends of the cut lines 30 may be connected to the edges 29 or 30 of the blank by parallel fold lines 33. Whether or not the fold lines 33 are employed'depends upon the flexibility of the paperboard, as if the paperboard is sufficiently flexible, the tabs will flex when engaged to produce the same result. Whether or not the fold lines 33 are used also depends upon the length of the cut lines 31, as any increase in the length of these cuts lines correspondingly increases the flexibility of the tabs 32.
To diagrammatically illustrate the purpose of the construction described, FIGS. 1 to 3 disclose a hopper which is indicated generally by the letter B. The hopper includes sides 34 between which the carton blanks A are stacked. Obviously, in the arrangement illustrated, the hopper must include a bottom support such as 35. A retaining pin 36 is supported at the forward end of the hopper projecting upwardly from the end of the bottom support 35. A similar retaining pin 37 projects downwardly from a support 39 which is connected to the hopper in any suitable manner, not illustrated in the drawings. These pins are designed to engage the flaps 16 and 22 and extend along the cut lines 27, the pins 36 and 37 terminating short of the cut lines 31.
Suction cups 40 are mounted upon tubular supports 41 normally mounted on the ends of arms 42 pivotally supported at a remote point 43. Means are provided to oscillate the arms 42 in a manner to move the suction cups 40 toward and awayfrom the stack of flat folded cartons A in the hopper. As the suction cups 40 are oscillated away from the hopper, the carton blanks are squared up by means of suitable guides 44 and 45. As the cartons reach rectangular form, they are normally engaged in pockets 45 mounted upon a conveyor 46. When the cartons are drawn into the pockets 45, the suction cups 40 are disengaged from the carton blanks by releasing the suction, and the cartons are carried to the closing and filling apparatus.
As previously stated, the only purpose of the description of the apparatus is to show the purpose of the carton structure. As indicated in FIG. 2, as the foremost carton blank A is engaged by the suction cups 40, the retaining pins 36 and 37 flex the tabs or doors 33, permitting the front wall of the carton to be drawn forwardly while the retaining pins still engage the flaps on the rear side of the carton to restrain it in place until the cartons are at least partially open. Continued movement of the carton will cause the retaining pins to flex the rear flaps l9 and 24 sufficiently to allow the carton to pass the retaining pins. The retaining pins will not pass the rear flaps until the carton is opened sufficiently to insure the proper squaring of the tubular cartons.
In accordance with the Patent Statutes, I have described the principles of construction and operation of my improvement in CARTON OPENING MEANS; while I have endeabored to set forth the best embodiment thereof, I desire to have it understood that obvious changes may be made within the scope of the following Claims without departing from the spirit of my invention.
I claim:
1. A carton comprising:
front and rear panels foldably connected by side panels,
front and rear closure flaps hingedly connected to an edge of said front and rear panels respectively and adapted to fold into superimposed relation,
said front panel closure flap including a first slit extending from the edge of said front panel closure flap toward the line of hinge connecting the same to said front panel and perpendicular thereto, said slit terminating short of the line of hinge,
a second slit extending generally parallel to said line of hinge and intersecting the end of said first slit, whereby the area between said second slit and said edge of said front panel closure flap froms a pair of end abutting tabs.
2. The structure of claim 1 and including lines of fold parallel to said first slit and connecting the ends of said second slit to said edge of said front panels closure flap.
3. The structure of claim 1 and in which said second slit extends a substantially equal distance on either side of said first slit.
4. The structure of claim 2 and in which said second slit extends a substantially equal distance on either side of said first slit.
5. A carton for use in combination with a carton hopper adapted to contain a series of flat folded cartons in face contact, a pair of lugs engaging opposite ends of the foremost carton to retain the cartons in the hopper, and suction cup means movably supported toward and away from the hopper and engageable with the front surface of theforemost carton in the hopper to remove the same from the hopper, the carton including:
a front panel and a foldably connected side wall in coplanar relation in flat condition of said carton, and a rear panel and a foldably connected second side wall in coplanar relation in flat condition of said carton, said front panel being foldably connected to, and in face contact with, said second side wall and said rear panel being foldably connected to, and lying rearwardly of, said first side wall panel,
closure flaps hingedly connected to the opposite ends of said front panel, said rear panel, and said first and second side walls along hinge lines,
the front closure flaps hingedly connected to front panel having lug receiving gates therein in the ends of said front closure flaps comprising:
first slits extending into the end edges of said front closure flaps in aligned relation intermediate the parallel sides of said front closure flaps, said slits extending normal to the front closure flap ends and terminating short of the lines of hinge connecting said front closure flap to said front panel,
second slits centrally intersecting the ends of said first slits most remote from the end edges of said front closure flaps, said second slits extending gentherebetween in the squaring of the carton from its erally parallel to the lines of hinge connecting said flat folded condition. front closure flaps to said front panel, whereby 6. The structure of claim 5 and including parallel fold the area between said second slits and the adjacent lines connecting the ends of said second slit to the end end edges of said front closure flaps providing op- 5 edges of said front closure flaps said fold lines being posed end abutting tabs foldable out of the plane parallel to said first slit, of said front closure flaps so that the lugs may pass

Claims (6)

1. A carton comprising: front and rear panels foldably connected by side panels, front and rear closure flaps hingedly connected to an edge of said front and rear panels respectively and adapted to fold into superimposed relation, said front panel closure flap including a first slit extending from the edge of said front panel closure flap toward the line of hinge connecting the same to said front panel and perpendicular thereto, said slit terminating short of the line of hinge, a second slit extending generally parallel to said line of hinge and intersecting the End of said first slit, whereby the area between said second slit and said edge of said front panel closure flap froms a pair of end abutting tabs.
2. The structure of claim 1 and including lines of fold parallel to said first slit and connecting the ends of said second slit to said edge of said front panels closure flap.
3. The structure of claim 1 and in which said second slit extends a substantially equal distance on either side of said first slit.
4. The structure of claim 2 and in which said second slit extends a substantially equal distance on either side of said first slit.
5. A carton for use in combination with a carton hopper adapted to contain a series of flat folded cartons in face contact, a pair of lugs engaging opposite ends of the foremost carton to retain the cartons in the hopper, and suction cup means movably supported toward and away from the hopper and engageable with the front surface of the foremost carton in the hopper to remove the same from the hopper, the carton including: a front panel and a foldably connected side wall in coplanar relation in flat condition of said carton, and a rear panel and a foldably connected second side wall in coplanar relation in flat condition of said carton, said front panel being foldably connected to, and in face contact with, said second side wall and said rear panel being foldably connected to, and lying rearwardly of, said first side wall panel, closure flaps hingedly connected to the opposite ends of said front panel, said rear panel, and said first and second side walls along hinge lines, the front closure flaps hingedly connected to front panel having lug receiving gates therein in the ends of said front closure flaps comprising: first slits extending into the end edges of said front closure flaps in aligned relation intermediate the parallel sides of said front closure flaps, said slits extending normal to the front closure flap ends and terminating short of the lines of hinge connecting said front closure flap to said front panel, second slits centrally intersecting the ends of said first slits most remote from the end edges of said front closure flaps, said second slits extending generally parallel to the lines of hinge connecting said front closure flaps to said front panel, whereby the area between said second slits and the adjacent end edges of said front closure flaps providing opposed end abutting tabs foldable out of the plane of said front closure flaps so that the lugs may pass therebetween in the squaring of the carton from its flat folded condition.
6. The structure of claim 5 and including parallel fold lines connecting the ends of said second slit to the end edges of said front closure flaps said fold lines being parallel to said first slit.
US00263865A 1972-06-19 1972-06-19 Carton opening means Expired - Lifetime US3750931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26386572A 1972-06-19 1972-06-19

Publications (1)

Publication Number Publication Date
US3750931A true US3750931A (en) 1973-08-07

Family

ID=23003572

Family Applications (1)

Application Number Title Priority Date Filing Date
US00263865A Expired - Lifetime US3750931A (en) 1972-06-19 1972-06-19 Carton opening means

Country Status (1)

Country Link
US (1) US3750931A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896711A (en) * 1974-03-13 1975-07-29 Container Corp Apparatus for erecting carton tubes
US4305691A (en) * 1979-11-26 1981-12-15 R. A. Pearson Company Tray feeder
US4512756A (en) * 1982-01-25 1985-04-23 The Mead Corporation Apparatus for feeding from a hopper and for setting up collapsed article carriers
US4688716A (en) * 1985-04-24 1987-08-25 Stig Winterling Package box
US4782996A (en) * 1987-10-02 1988-11-08 The Procter & Gamble Company Dispensing package
US4838430A (en) * 1987-01-16 1989-06-13 The Mead Corporation Side loading carton
US4880155A (en) * 1988-10-18 1989-11-14 Packaging Corporation Of America Collapsible foldable dispensing carton
US5098015A (en) * 1989-11-13 1992-03-24 The Mead Corporation Sleeve type carton
US5176608A (en) * 1990-12-25 1993-01-05 Shikoku Kakoki Co., Ltd. Container blank erecter and feeder
US5180356A (en) * 1990-12-25 1993-01-19 Shikoku Kakoki Co., Ltd. Carton blank erecter and feeder
US5588584A (en) * 1991-11-25 1996-12-31 Fold-Pak Corporation Lipless folding cartons and blanks
US5826870A (en) * 1994-02-04 1998-10-27 Riverwood International Corporation Divider sheet for stacked products and method of supplying planar articles
US6304796B1 (en) 1999-12-07 2001-10-16 Linda Ding Vending machine operated by a chip card
DE102016109995A1 (en) * 2016-04-04 2017-10-05 Sig Technology Ag Method and device for forming unidirectionally open packing bodies from packaging pouches open on both sides
WO2019007872A1 (en) * 2017-07-03 2019-01-10 Sig Technology Ag Method and device for constructing packaging bodies which are open on one side using an oscillating gripper

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694350A (en) * 1950-11-09 1954-11-16 Redington Co F B Packaging machine
US2746363A (en) * 1955-01-25 1956-05-22 Procter & Gamble Carton feeding and squaring-up device
US2999344A (en) * 1959-08-03 1961-09-12 Lynch Corp Cartoning machine
US3411695A (en) * 1967-07-17 1968-11-19 William J. Cupo Box closure with flexible insert
US3412922A (en) * 1966-09-06 1968-11-26 Ex Cell O Corp Paperboard container closure
US3580476A (en) * 1969-10-23 1971-05-25 Folding Cartons Inc Carton for use with packaging apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694350A (en) * 1950-11-09 1954-11-16 Redington Co F B Packaging machine
US2746363A (en) * 1955-01-25 1956-05-22 Procter & Gamble Carton feeding and squaring-up device
US2999344A (en) * 1959-08-03 1961-09-12 Lynch Corp Cartoning machine
US3412922A (en) * 1966-09-06 1968-11-26 Ex Cell O Corp Paperboard container closure
US3411695A (en) * 1967-07-17 1968-11-19 William J. Cupo Box closure with flexible insert
US3580476A (en) * 1969-10-23 1971-05-25 Folding Cartons Inc Carton for use with packaging apparatus

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896711A (en) * 1974-03-13 1975-07-29 Container Corp Apparatus for erecting carton tubes
US4305691A (en) * 1979-11-26 1981-12-15 R. A. Pearson Company Tray feeder
US4512756A (en) * 1982-01-25 1985-04-23 The Mead Corporation Apparatus for feeding from a hopper and for setting up collapsed article carriers
US4688716A (en) * 1985-04-24 1987-08-25 Stig Winterling Package box
US4838430A (en) * 1987-01-16 1989-06-13 The Mead Corporation Side loading carton
US4782996A (en) * 1987-10-02 1988-11-08 The Procter & Gamble Company Dispensing package
US4880155A (en) * 1988-10-18 1989-11-14 Packaging Corporation Of America Collapsible foldable dispensing carton
US5098015A (en) * 1989-11-13 1992-03-24 The Mead Corporation Sleeve type carton
US5176608A (en) * 1990-12-25 1993-01-05 Shikoku Kakoki Co., Ltd. Container blank erecter and feeder
US5180356A (en) * 1990-12-25 1993-01-19 Shikoku Kakoki Co., Ltd. Carton blank erecter and feeder
US5588584A (en) * 1991-11-25 1996-12-31 Fold-Pak Corporation Lipless folding cartons and blanks
US5826870A (en) * 1994-02-04 1998-10-27 Riverwood International Corporation Divider sheet for stacked products and method of supplying planar articles
US6304796B1 (en) 1999-12-07 2001-10-16 Linda Ding Vending machine operated by a chip card
DE102016109995A1 (en) * 2016-04-04 2017-10-05 Sig Technology Ag Method and device for forming unidirectionally open packing bodies from packaging pouches open on both sides
DE102016109996A1 (en) * 2016-04-04 2017-10-05 Sig Technology Ag Method and apparatus for forming unilaterally open packing bodies from open on both sides packing coats
US11203448B2 (en) * 2016-04-04 2021-12-21 Sig Technology Ag Method and device for forming package bodies open at one end from package sleeves open at both ends
WO2019007872A1 (en) * 2017-07-03 2019-01-10 Sig Technology Ag Method and device for constructing packaging bodies which are open on one side using an oscillating gripper
US20200180795A1 (en) * 2017-07-03 2020-06-11 Sig Technology Ag Method and Device for Forming Package Bodies Which Are Open on One Side Using an Oscillating Gripper
US10946988B2 (en) * 2017-07-03 2021-03-16 Sig Technology Ag Method and device for forming package bodies which are open on one side using an oscillating gripper

Similar Documents

Publication Publication Date Title
US3750931A (en) Carton opening means
US6923365B2 (en) Carton and carton blank
US2913101A (en) Display cartons
US3899119A (en) Snack tray carton
US3078032A (en) Carrying container
US2544565A (en) Collapsible carton
US4186866A (en) Dispenser container with cover
US3058646A (en) Reclosable cartons
JPS61500544A (en) ball box
US2448795A (en) Divisible carton
GB910115A (en) Improvements in the closure construction of folding boxes
US4363400A (en) Display carton with internal spacer
US3780934A (en) Container with load carrying feature
US3054505A (en) Multi-article carton
US4570796A (en) Package for floppy disk envelopes
US3381888A (en) Envelopelike container for paper and coins
US3790065A (en) Cushioned folder
US3721381A (en) Two part container
US3127083A (en) Dispensing carton
US3801000A (en) Two part container
US2407919A (en) Dispensing box or container
US4334611A (en) Envelope type carton
US2441410A (en) Method and apparatus for closing cartons
US4210240A (en) Two-walled carton
US3735914A (en) Sift-proof dispensing carton

Legal Events

Date Code Title Description
AS Assignment

Owner name: WALDORF CORPORATION, A CORP. OF DE.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHAMPION INTERNATIONAL CORPORATION;REEL/FRAME:004474/0467

Effective date: 19850716

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)