US3541757A - Method of and device for tightening a wrap around blank about a group of receptacles - Google Patents

Method of and device for tightening a wrap around blank about a group of receptacles Download PDF

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Publication number
US3541757A
US3541757A US696477A US3541757DA US3541757A US 3541757 A US3541757 A US 3541757A US 696477 A US696477 A US 696477A US 3541757D A US3541757D A US 3541757DA US 3541757 A US3541757 A US 3541757A
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US
United States
Prior art keywords
blank
receptacles
tightening
group
package
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
US696477A
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English (en)
Inventor
Normand L Bertrand
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.)
CERTIPAK CORP
Original Assignee
CERTIPAK 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 CERTIPAK CORP filed Critical CERTIPAK CORP
Application granted granted Critical
Publication of US3541757A publication Critical patent/US3541757A/en
Assigned to FLEET NATIONAL BANK reassignment FLEET NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLIKLOK CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/14—Folders forming part of, or attached to, conveyors for partially-wrapped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents
    • B65B11/105—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents the axis of the tube being parallel to the conveying direction

Definitions

  • Thisinvention relates to improvements in method and devices for enclosing a group of receptacles, such as cans, bottles or jars, in a wrap-around blank to form an open-ended package.
  • the blank employed for this purpose is usually an elongated strip of paperboard transversely scored to define top, side and bottom panel portions.
  • the blank is wrapped around a group of receptacles most commonly arranged in two rows of three, but greater and smaller numbers of receptacles are occasionally packaged, including receptacles arranged in a single row.
  • the ends of the blank are overlapped, at least partially, at the bottom of the package, and are secured together by staples, adhesive or, most commonly, by glueless locks comprising a tab or tabs on one bottom portion inserted into an aperture or apertures in the other bottom portion of the blank.
  • the blank is provided with relief apertures at the junction between its side panels and the end panels which are to be secured together. Rim portions of the receptacles project through these apertures which may be formed, at least in part, by a tongue which is integral with and lies in the plane of, the respective end panel and extends at an angle with respect to the generally vertically disposed side portion or panel of the blank.
  • the security of retention depends entirely on the tightness with which the blank is applied about the receptacles, and procedures and means must be employed for tightening the blank before its ends are connected together.
  • the package is moved between laterally disposed compression belts which exert horizontal compression on the sides of the wrapper and against the receptacles.
  • force is exerted against the blank at the spaces between successive receptacles of a row.
  • the bottom or end panels are provided with grab holes, and pins or fingers are inserted into these grab holes after the end panels are folded into overlapping bottom forming positions. The pins or fingers then draw the panels closer together, whereafter the panels are secured together.
  • the first mentioned procedure has the drawback that it does not preclude buckling of the blank at the juncture between sides and bottom, as the bottom forming end panels are pushed rather than pulled.
  • a further drawback is that the procedure is substantially ineffective in reducing vertical slack of the wrapper.
  • the second procedure has the drawback that even though it is effective in pulling slack from the enclosing blank horizontally, it is not nearly as effective for reducing vertical slack which may remain.
  • the package may eventually have a rather loosely fitting wrapper, particularly after the package is allowed to settle permitting remaining slack to distribute itself evenly about the enclosed receptacles.
  • the package may then not be sufficiently tight to prevent rattling-which is objectionable, particularly for glass receptacles-and may not be sufiiciently tight to hold the the receptacles securely.
  • the present invention makes use of the relief apertures which are provided at the junction of sides and bottom portions of the blank and is based on the consideration that, if such apertures are produced by the formation of tabs or tongues which underlie the receptacles, it is possible to engage the blank by blades extending into the apertures at a point or line immediately above the tongues and that such engagement is also operative to lift the receptacles, which accomplishes several purposes: It lifts the receptacles and forces them towards the top panel, thereby reducing vertical slack. It further facilitates tightening of the blank by temporarily relieving the bottom panels of the weight of the receptacles. It finally causes the blank to crease at a line of juncture between sides and bottom which lies slightly higher than if the receptacles had not been lifted.
  • the blades which tighten the blank and lift the receptacles are longitudinally extended and the distance between them becomes progressively less as the package advances.
  • the blades are spaced and parallel, and are periodically moved towards and away from each other similar to the motion of the jaws of a parallel-jawed wire cutter, such movement taking place while the package is at rest at a tightening station.
  • the invention also resides in certain new and original features of construction, combination of elements, and method steps, as well as sequences of method steps.
  • FIG. 1 is a perspective view of a complete package, turned upside down to show the bottom panel locks;
  • FIGS. 2 to 7 are perspective views of successive stages of operation performed on the package
  • FIG. 8 is a perspective detail view of the manner of engagement of the blank by a tightening blade.
  • FIG. 9 is a sectional elevation of a supplemental and optional dovetail-rimmed roller adapted to exert compressive force on the edge of a tongue on the blank, the section being taken on line 99 of FIG. 7.
  • the package shown upside down in FIG. 1 comprises a group of six cans 11 enclosed in an elongated one-piece blank B of suitable foldable material, such as paperboard, comprising a central top panel 12, side panels 13, 14 and bottom panels 15, 16 overlapping at 17.
  • suitable foldable material such as paperboard
  • the juncture between the side panels and the top or bottom panels is defined by pairs of spaced parallel fold lines shown, for example, at 18, 19.
  • tongues 20 are cut from the board. These tongues lie in the plane of the bottom panels with which they are integral, and are disposed at an angle with respect to the side panels and the area between the fold lines 18, 19.
  • the terminal portions of the bottom panels are equipped with locking tabs 23 inserted in locking apertures 24.
  • the general shape of the blank as described to this point is known.
  • the particular form of interlock of the bottom panels is of no consequence for the performance of the present method, nor is the specific shape of the receptacles which may also be jars or bottles.
  • the bottom panels may be connected by adhesive, staples, or in any other manner after tightening of the blank about the group of receptacles to which the description shall now turn and the present invention concerns the tightening of the blank.
  • FIG. 2 shows the package, at the illustrated moment still incomplete, traveling through a packaging machine comprising laterally disposed conveyors 26, 27 fitted with lugs 28, 29 which propel both the group of cans and the blank which was previously placed thereover.
  • the receptacles 11 are supported by, and slide on, a central track plate 30 and they are laterally guided by rails of L shaped cross section, one such rail being visible at 31.
  • the bottom forming ends of the blank are obscured by parts of the machinery.
  • the bottom panels still depend downwardly from the side panels 13, 14 and are being folded towards an overlapping position underneath the central track 30 (see FIG. 3).
  • This folding procedure causes the apertures at the juncture between the sides and bottom of the blank to Open, as the tongues 20 swing toward a horizontal position.
  • a pair of aperture engaging blades are mounted which are designed to move into the space above the respective tongue 20 and under the receptable bottoms, as shall presently be shown.
  • One of the blades is visible at 33, the opposite blade 32 being obscured in FIG. 2 by other parts of the machinery. It is visible in FIG. 3.
  • Both blades 33 and 32 have outwardly flared entrance portions, as shown at 34 (FIG. 3) and 35 (FIG. 2). In the position shown in FIG. 3 the receptacle 11 still rest on, and are supported by, the central track 30.
  • the pull exerted by the blades becomes stronger as the package advances toward the observer of FIGS. 3 and 4, thus moving into areas of progressively narrower spacing of the blades 32, 33.
  • FIG. 8 which also illustrates a slight modification of the shape of the aperture 21 in which a depending vertical tongue 25 is also formed.
  • the blade 33 is of tapered transverse cross section and overlies the horizontal tongue 20 in a position to lift the bottom portion of receptacles (not shown in FIG. 8).
  • a tightening force is exerted by the longitudinally extended relatively thin edge of the blade primarily at the crotch 38 of the aperture and secondarily against the portion 37 of the blank between apertures 21.
  • the lift 36 (FIGS. 4 and 6) imparted to the receptacles is substantially equal to the thickness 136 of the blade measured at the point of engagement with the bottoms of the receptacles which lies at a distance from, and at a higher level than, the crotch-engaging edge of the blade.
  • the bottom panels 15, 16 In the position shown in FIG. 4 the bottom panels 15, 16 have assumed an angle of about degrees with each other under the central track and are about to be folded fiat into horizontal position as they emerge from under the central track structure. This is shown in FIG. 5. The bottom panels 15, 16 now overlap and ride up on a lifting cam or rail 39.
  • the tightening blades 32, 33 continue to tighten the blank as the distance between them decreases gradually while the weight of the package is being carried by the blades.
  • connection of the bottom forming panels may take place by means of staples, adhesive or locking tabs, and the locking device may have the form described further below.
  • an additional, supplemental tightening device comprising rollers operating on the laterally extending tongues may be employed.
  • the horizontal tongue 20 is seen to extend horizontally outwardly and may be brought to pass over a horizontal wheel or roller 40 having a large diameter flange portion 41 and a smaller diameter V groove or dovetail portion 42.
  • the assembly of the two opposite wheels forms a nip for the horizontally extended tongues at the V portion, the nip being so dimensioned as to cause additional tightening of the bottom portions of the blank for the purpose of connection of the end panels in the overlapping tightening position.
  • connection of the panels may be accomplished by adhesive, stapling, or as illustrated herein by insertion of locking tabs.
  • the locking device 43, 44 would be arranged to act on the blank at the point of maximum tightening by the lateral blades.
  • a device for tightening a wrap-around blank about a group of receptacles prior to the securing together of the end portions of the blank underneath the group of receptacles in a position in which the end portions overlap partially and form a package bottom said blank having apertures formed at the junction between its side panels and its bottom panels through which apertures rim portions of the receptacles project, such apertures being formed, at least in part, by a tongue integral with, and in the plane of, the package bottom and being disposed at an angle with respect to the upwardly extending side panel of the blank, the device comprising transport means for advancing said group and a blank in a direction transverse to the longest dimension of the blank, the device being characterized by a pair of spaced blades disposed in a substantially horizontal plane, said blades being of tapered transverse cross section and having blank engaging edges extending into said apertures to engage the blank immediately above said tongues and to engage with its upper surface said receptacles underneath their protruding rim portions to
  • a device as claimed in claim 5 in which at a point downstream with respect to said blades a pair of rollers are provided laterally disposed with respect to the path of the package, said rollers having dovetailed peripheral portions for engaging said tongues and exerting tightening pressure on the end portions of the blank to increase their overlap to a degree greater than the overlap existing prior to entry of the tongues into the nip of the pair of rollers.
  • a device as claimed in claim 6 in which a means for securing the end portions of the blank is provided between said rollers to act on said blank substantially at the moment of passage of said tongues between said rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)
  • Packages (AREA)
US696477A 1968-01-08 1968-01-08 Method of and device for tightening a wrap around blank about a group of receptacles Expired - Lifetime US3541757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69647768A 1968-01-08 1968-01-08

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US3541757A true US3541757A (en) 1970-11-24

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Application Number Title Priority Date Filing Date
US696477A Expired - Lifetime US3541757A (en) 1968-01-08 1968-01-08 Method of and device for tightening a wrap around blank about a group of receptacles

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US (1) US3541757A (enrdf_load_stackoverflow)
DE (1) DE1900393A1 (enrdf_load_stackoverflow)
GB (1) GB1250799A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807117A (en) * 1972-08-10 1974-04-30 Owens Illinois Inc Method and apparatus for forming packages of containers
US4481750A (en) * 1981-11-06 1984-11-13 The Mead Corporation Packaging apparatus and method
US4519182A (en) * 1982-12-17 1985-05-28 Certipak Corporation Article wrapper and method of forming
US20070227927A1 (en) * 2006-03-29 2007-10-04 Andrea Coltri-Johnson Carrier packages and methods of erecting carrier packages
EP1950145A3 (en) * 2007-01-27 2008-09-03 MeadWestvaco Packaging Systems LLC Carton and blank therefor
US9567120B2 (en) 2014-12-16 2017-02-14 Graphic Packaging International, Inc. Carton for articles
US9845182B2 (en) 2015-05-07 2017-12-19 Graphic Packaging International, Inc. Carton with handle
US10384846B2 (en) 2013-05-24 2019-08-20 Graphic Packaging International, Llc Arrangement of containers in a carton
US11325764B2 (en) 2013-05-24 2022-05-10 Graphic Packaging International, Llc Carton for articles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9601746D0 (en) * 1996-01-29 1996-03-27 Riverwood Int Corp Tightening arrangement for paperboard wrap

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986857A (en) * 1958-06-26 1961-06-06 Continental Can Co Machine and method for packaging articles
US3456420A (en) * 1967-01-13 1969-07-22 Robert H Ganz Method of and apparatus for forming a package

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986857A (en) * 1958-06-26 1961-06-06 Continental Can Co Machine and method for packaging articles
US3456420A (en) * 1967-01-13 1969-07-22 Robert H Ganz Method of and apparatus for forming a package

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807117A (en) * 1972-08-10 1974-04-30 Owens Illinois Inc Method and apparatus for forming packages of containers
US4481750A (en) * 1981-11-06 1984-11-13 The Mead Corporation Packaging apparatus and method
US4566248A (en) * 1981-11-06 1986-01-28 The Mead Corporation Packaging apparatus and method
US4519182A (en) * 1982-12-17 1985-05-28 Certipak Corporation Article wrapper and method of forming
US9505539B2 (en) 2006-03-29 2016-11-29 Graphic Packaging International, Inc. Methods of erecting carrier packages
US8347591B2 (en) 2006-03-29 2013-01-08 Graphic Packaging International, Inc. Methods of erecting carrier packages
US9475628B2 (en) * 2006-03-29 2016-10-25 Graphic Packaging International, Inc. Carrier packages and methods of erecting carrier packages
US20070227927A1 (en) * 2006-03-29 2007-10-04 Andrea Coltri-Johnson Carrier packages and methods of erecting carrier packages
US10793331B2 (en) 2006-03-29 2020-10-06 Graphic Packaging International, Llc Methods of erecting carrier packages
EP1950145A3 (en) * 2007-01-27 2008-09-03 MeadWestvaco Packaging Systems LLC Carton and blank therefor
US10384846B2 (en) 2013-05-24 2019-08-20 Graphic Packaging International, Llc Arrangement of containers in a carton
US11325764B2 (en) 2013-05-24 2022-05-10 Graphic Packaging International, Llc Carton for articles
US9567120B2 (en) 2014-12-16 2017-02-14 Graphic Packaging International, Inc. Carton for articles
USD811218S1 (en) 2015-05-07 2018-02-27 Graphic Packaging International, Inc. Carton
USD824758S1 (en) 2015-05-07 2018-08-07 Graphic Packaging International, Llc Carton
US10233000B2 (en) 2015-05-07 2019-03-19 Graphic Packaging International, Llc Carton with handle
US9845182B2 (en) 2015-05-07 2017-12-19 Graphic Packaging International, Inc. Carton with handle
US10556730B2 (en) 2015-05-07 2020-02-11 Graphic Packaging International, Llc Carton with handle

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Publication number Publication date
GB1250799A (enrdf_load_stackoverflow) 1971-10-20
DE1900393A1 (de) 1969-07-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FLEET NATIONAL BANK,RHODE ISLAND

Free format text: SECURITY INTEREST;ASSIGNOR:KLIKLOK CORPORATION;REEL/FRAME:004660/0001

Effective date: 19860731

Owner name: FLEET NATIONAL BANK, 111 WESTMINSTER STREET, PROVI

Free format text: SECURITY INTEREST;ASSIGNOR:KLIKLOK CORPORATION;REEL/FRAME:004660/0001

Effective date: 19860731