WO2010003233A1 - Emballage à soufflets latéraux refermable - Google Patents

Emballage à soufflets latéraux refermable Download PDF

Info

Publication number
WO2010003233A1
WO2010003233A1 PCT/CA2009/000939 CA2009000939W WO2010003233A1 WO 2010003233 A1 WO2010003233 A1 WO 2010003233A1 CA 2009000939 W CA2009000939 W CA 2009000939W WO 2010003233 A1 WO2010003233 A1 WO 2010003233A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure
blank
bag
zipper
slot
Prior art date
Application number
PCT/CA2009/000939
Other languages
English (en)
Inventor
Martin Woodhouse
Richard Pileski
Original Assignee
Martin Woodhouse
Richard Pileski
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 Martin Woodhouse, Richard Pileski filed Critical Martin Woodhouse
Publication of WO2010003233A1 publication Critical patent/WO2010003233A1/fr

Links

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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8132—Applying the closure elements in the machine direction

Definitions

  • the present invention relates to the field of reclosable packaging. More particularly, the present invention relates to a package having side gussets and a reclosable zipper for accessing the contents.
  • Gusseted packages having reclosable zippers are known.
  • a typical prior art gusseted package having a reclosable zipper the front and back walls and gussets of the package are joined together before filling to "sandwich" therebetween a reclosable zipper. This restricts against full opening the otherwise square or rectangular opening of the package. The restriction prevents efficient filling of the package with products and typically requires a means for widening the opening during filling.
  • the present invention permits the manufacture of reclosable side gusseted packages which present during filling a full substantially rectangular or square opening to a product-filling apparatus.
  • a blank for forming a reclosable side gusset package includes a bag having a front wall, a rear wall, a closed end, an open end and two opposing gusseted side walls.
  • the gusseted side walls are extendable to form a substantially square or rectangular bag opening in the open end of the bag.
  • One of the front wall and the rear wall is a closure-bearing wall and has a closure receiver selected from the group consisting of a notch extending from the open end and a slot proximal to the open end.
  • a reversible zipper closure is provided and comprises a first panel having a first mating structure and a second panel with a second mating structure.
  • the first and second mating structures are configured to reversibly mate with each other to effect closing of said zipper closure.
  • a surface of the zipper closure is fastened to the inner surface of the closure-bearing wall such that the first and second mating structures, when mated, occupy said closure receiver.
  • a reclosable package formed from the blank described above.
  • the package is created by filling and closing the blank.
  • a method of manufacturing includes the steps of: unwinding a sheet from a roll; punching a plurality of tag holes in said sheet; defining a notch or a slot in said sheet; fastening a reversible closure to said sheet, said reversible closure being positioned so as to be accessible through said notch or slot; and folding, sealing and cutting said sheet to form the blank.
  • a packaging apparatus comprises: apparatus for forming the blank; apparatus for filling the blank to form a filled bag; and apparatus for closing the opening of the filled bag.
  • Figure 1 is a partially cut away front perspective view of a prior art recloseable bag having a closure disposed on the edges of the upper opening and being filled with a product;
  • Figure 2 is a partial front perspective view of an embodiment of the blank of the invention showing a filling arrangement
  • Figure 3 is a front perspective view of the blank of Figure 2;
  • Figure 4 is a front plan view of an embodiment of a reclosable package according to the invention.
  • Figure 5a is a cross sectional view along line 5A-5A of Figure 4 with the reversible closure shown in the closed position and the frangible portion substantially occluding the slot;
  • Figure 5b is a view similar to Figure 5a with the frangible portion removed and the reversible closure in the open position;
  • Figure 6 is a process diagram of an embodiment of a system for manufacturing a reclosable package according to the invention.
  • the blank 10 which may be used to form a reclosable package.
  • the blank 10 includes a bag 21 having a front wall 12, a rear wall 14 two opposing gusseted side walls 16, a closed bottom 18 and a substantially rectangular opening W at the upper end of the bag 21.
  • This upper opening W may also be a substantially square opening if the relative dimensions chosen for the walls of the bag 21 are substantially square.
  • the gusseted side walls 16 are segmented by gusset folds 17.
  • the bag 21 is formed from a sheet of material such as an aluminum foil, plastic, paper, composite or other material known to those skilled in the art.
  • the front wall 12 has a slot 20, the interior of the slot 20 being substantially occluded by a frangible strip 99 formed integrally with remainder of the front wall 12.
  • a perforation defines the boundary of the frangible strip 99.
  • the front wall 12 is a closure bearing wall and has a reversible zipper closure 22 fastened onto its inner surface with a closure seal (not shown) between the zipper closure 22 and the front wall 12 surrounding the slot 20.
  • the closure seal can be a seal as typically found in the industry including but not limited to heat and ultrasonic type seals.
  • the reversible closure 22 is formed of a first panel 26 and a second panel 28.
  • the first panel 26 has a first mating structure 30 fixed thereto and the second panel 28 has a second mating structure 32 fixed thereto.
  • the first and second mating structures 30 and 32 are configured to reversibly mate with each other to effect closing of the reversible closure 22.
  • the mating structures i.e. the zipper
  • the closure 22 also includes a slider 34 to facilitate the process of mating and disengaging the first and second mating structures 30 and 32, thereby closing and opening the reversible closure 22.
  • the slider 34 protrudes through that portion of the slot 20 which is not occluded by the frangible strip 99.
  • the perforation being a connection of reduced strength between the frangible strip 99 and the reminder of the front wall 12, permits the ready removal of the frangible strip 99, thereby to permit movement of the slider 34 and operation of the closure 22.
  • the blank IO can be sealed to form a sealed package 11.
  • the inner surface of the closure 22 is sealed to a portion of the inner surface of the rear wall 14 and to adjacent segments of the gusseted sidewalls 16, and portions of the inner surface of the rear wall 14 are sealed to adjacent segments of the gusseted sidewalls 16.
  • This seal thereby captures the gusseted sidewalls 16 between the inner surface of the second panel 28 and the inner surface of the rear wall 14.
  • the gusseted side walls 16 Prior to performing the above- mentioned sealing step, are extendable to form the substantially rectangular or square upper opening W which is convenient for filling by a conventional product filling apparatus Z.
  • the seal can be effected by heat- sealing.
  • the mechanism for closing the bag opening W to form the package 11 will advantageously often be selected so as to permit the blank 10 to be closed using conventional bag-closing machinery, so as to permit conventional gusset-bag- closing machines to be redeployed without major modification for the production of recloseable gusset style packages.
  • upper portions of the gusseted side walls 16 are provided with tag holes 36 which each are superimposable upon a corresponding tag hole 36 in the other segment of the same sidewall 16, as shown in Figures 2 and 3.
  • the tag holes 36 provide an opening such that the inner surface of the second panel 28 of the reversible closure 22 can be connected to the inner surface of the rear wall 14, to "pin" the top corners of the package 11 together.
  • a top seal 38 This is illustrated schematically in Figure 5a by a top seal 38, although it will be understood that the connection can be effected through heat sealing, such that no additional "sealing element" need be provided.
  • adhesives and other closures, such as stitching can be utilized.
  • Additional means for closing the upper opening W are possible in other embodiments.
  • the inner surface of the second panel 28 may be connected to a portion of the front segment of each one of the inner surfaces of the gusseted side walls 16
  • the rear half of each one of the inner surfaces of the gusseted side walls 16 may be connected to the inner surface of the rear wall 14; and (c) in each sidewall, the outer front segment may be connected to the outer rear segment.
  • the tamper-evident closure 40 configured to seal the first panel 26 to the second panel 28.
  • the tamper-evident closure is exposable upon opening of the first and second mating structures 30 and 32. which, of course, is preceded by removal of the frangible strip 99, as indicated by the sequence of Figures 5a and 5b.
  • the secondary tamper-evident closure 40 may be in the form of a strip of tape or other such sealing structure which can be disconnected only in an irreversible, tamper-evident manner, as readily known to those with skill in the art.
  • the corners where the front 12 and rear 14 walls meet the gusseted side walls 16 may be reinforced with side seals 42 also made by heat-sealing or other conventional methods.
  • the bottom 18 is formed by folding the gusseted side walls 16 inward and making a bottom seal 44 between the front wall 12 and the rear wall 14.
  • the package may also include diagonal seals, known as K-seals 46 which extend between the side seals 42 and the bottom seal 44. These seals may also be made by heat-sealing or other conventional methods. Also, Doyen seals may be employed (not shown)
  • the blank 10 may be filled with a product in a manner as depicted in
  • FIG 2 where it is shown that the blank 10 is brought into proximity of a product filling apparatus Z such that the substantially rectangular or square upper opening W engages the product filling apparatus 2 which feeds a product Y into the opening W to fill the package.
  • the substantially rectangular or square upper opening W allows for efficient engagement and obviates the need for pinning one edge of the package to retain an opening as shown in Figure 1.
  • the blank 10 can be closed in any conventional method, in a manner analogous to the closure methodologies employed for closing conventional side gusset bags to form packages.
  • FIG. 6 there is shown an embodiment of a system 100 for use in a process for manufacturing the blank 10.
  • the system includes a single unwind system 102 for unwinding a sheet 111 from a single roll 106.
  • the sheet 111 unwinds and passes through a slitter assembly 108 to split the sheet into a portion which defines the front wall of the bag and a portion which defines the side and rear walls.
  • the latter portion of the sheet 111 passes through a diverting unit 104 followed by a tag hole punch assembly 110 which punches tag holes 36 in the portion of the sheet 111 that will become the gusseted side walls 16.
  • the sheet 111 then passes through a series of folding boards 112 and capstan compensators 114 and 116 and web steering frames 118 and 120.
  • the former portion of the sheet 111 passes on to a driven reversible closure insertion and sealing unit 124 for sealing of the reversible closure 22 to the sheet 111.
  • the sheet 111 next passes through a series of registration systems 126, a series of servo-driven infeed rollers 128, a three roller drive 130 and an additional web steering frame 132 on its way to a servo-driven longitudinal sealing unit 134 which seals the side seals 42 that define the corners between the gusseted side walls 16 and the front 12 and rear 14 walls.
  • the sheet 111 next passes through a web trimming station 136 where excess sheet is trimmed from the side seals 42.
  • the sheet 111 continues to a servo-driven mid nip draw roller 138, after which it enters a servo- driven K-sealing station 140 where the K-seals 46 (or Doyer seals) are applied to the sections of the sheet 111 that will become the lower portions of the front 12 and rear 14 walls of the blank 10.
  • the sheet 111 next passes to a servo-driven K- seal cooling station 142 where the K-seals 46 are cooled prior to the sheet 111 continuing onwards through a series of servo-driven transverse sealing stations 144 and 146 where the bottom seal 44 is added and then cooled via transverse seal cooling stations 148 and 150.
  • the sheet 111 then enters a web-steering registration system 152, passes through an exit draw roller 154 and is then cut to the length of the package using a double cut guillotine 156 after which the blank 10 passes through a gate 158 and a jog indexer 160 before exiting the manufacturing system.
  • the blank 10 is now ready for filling with product and sealing to form the package.
  • additional folding and sealing steps can be performed on this blank 10 prior to filling and sealing, to provide a flat bottom or the like.
  • the embodiments of the invention described herein have several advantages.
  • the embodiments of reclosable packages described herein do not require the side gussets to be folded down during manufacture to insert the reversible closure.
  • the manufacturing methods described herein allow the package to be constructed from a single sheet. This overcomes the problems associated with registering separate sheets within the manufacturing equipment and thus reduces the potential for generation of scrap during set up of the manufacturing equipment.
  • the side gussets may be completely extended, thereby presenting a substantially rectangular or square upper opening to the product filling apparatus.
  • the package can be produced using conventional bag-filling and closing machines without substantial modification.
  • the package can be created in a form-fill-seal process, in which event, packaging apparatus will be provided which includes apparatus for forming the blank; apparatus for filling the blank to form a filled bag; and apparatus for closing the opening of the filled bag.
  • reclosable package described herein are useful for packaging a wide range of products including food, pet food, chemicals, fertilizers or any other substance benefiting from being packed in reclosable packaging that is easily accessible by the consumer.
  • the closure is positioned on the front and upper end of a completed package.
  • the closure could easily be positioned on the rear or bottom of the completed package.
  • a slot for receiving the zipper is shown in the closure-bearing wall, a notch for receiving the zipper could equally be utilized.
  • press-to-close and other mechanical zippers could be utilized.
  • the package can be constructed so as to be hermetic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

L'invention porte sur une ébauche pour former un emballage, laquelle ébauche comprend un sac et une fermeture à glissière réversible. Le sac comprend des parois avant et arrière, des extrémités fermée et ouverte, et des parois latérales à soufflets aptes à s'étendre pour former une ouverture de sac rectangulaire dans l'extrémité ouverte. L'une des parois avant et arrière porte une fermeture et comprend un récepteur de glissière se présentant sous la forme d'une encoche s'étendant à partir de l'extrémité ouverte ou d'une fente à proximité de l'extrémité ouverte. La fermeture comprend des premier et second panneaux ayant, respectivement, des première et seconde structures d'accouplement, qui s'accouplent de manière réversible entre elles pour effectuer une fermeture de la fermeture. Une surface de la fermeture est fixée à la surface interne de la paroi portant la fermeture de telle sorte que les première et seconde surfaces d'accouplement occupent ledit récepteur de fermeture. Le sac peut être rempli et fermé pour former un emballage refermable.
PCT/CA2009/000939 2008-07-09 2009-07-07 Emballage à soufflets latéraux refermable WO2010003233A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7922408P 2008-07-09 2008-07-09
US61/079,224 2008-07-09
US8145308P 2008-07-17 2008-07-17
US61/081,453 2008-07-17

Publications (1)

Publication Number Publication Date
WO2010003233A1 true WO2010003233A1 (fr) 2010-01-14

Family

ID=41506625

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2009/000939 WO2010003233A1 (fr) 2008-07-09 2009-07-07 Emballage à soufflets latéraux refermable

Country Status (1)

Country Link
WO (1) WO2010003233A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080267539A1 (en) * 2007-04-24 2008-10-30 Illinois Tool Works Inc. Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags
EP2415685A1 (fr) * 2010-08-06 2012-02-08 Mondi AG Sachet plastique doté d'une fermeture refermable côté tête
EP2415684A1 (fr) * 2010-08-06 2012-02-08 Mondi AG Sachet plastique doté d'une section terminale côté pied
EP3023350A1 (fr) * 2014-11-21 2016-05-25 Mondi Consumer Packaging Technologies GmbH Sac à fermeture à glissière avant doté d'une poignée découpée
WO2020065542A1 (fr) * 2018-09-25 2020-04-02 Blijlevens, Antonius Petrus Henricus Sac et procédés associés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692837A (en) * 1996-08-08 1997-12-02 Fres-Co System Usa, Inc. Gussetted flexible package with reclosable mouth using a snap type reclosure strip
US6960021B2 (en) * 2002-10-02 2005-11-01 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly
US6991372B2 (en) * 2003-03-13 2006-01-31 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692837A (en) * 1996-08-08 1997-12-02 Fres-Co System Usa, Inc. Gussetted flexible package with reclosable mouth using a snap type reclosure strip
US6960021B2 (en) * 2002-10-02 2005-11-01 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly
US6991372B2 (en) * 2003-03-13 2006-01-31 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080267539A1 (en) * 2007-04-24 2008-10-30 Illinois Tool Works Inc. Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags
EP2415685A1 (fr) * 2010-08-06 2012-02-08 Mondi AG Sachet plastique doté d'une fermeture refermable côté tête
EP2415684A1 (fr) * 2010-08-06 2012-02-08 Mondi AG Sachet plastique doté d'une section terminale côté pied
EP3023350A1 (fr) * 2014-11-21 2016-05-25 Mondi Consumer Packaging Technologies GmbH Sac à fermeture à glissière avant doté d'une poignée découpée
WO2020065542A1 (fr) * 2018-09-25 2020-04-02 Blijlevens, Antonius Petrus Henricus Sac et procédés associés
TWI715210B (zh) * 2018-09-25 2021-01-01 巴哈馬商提克森國際有限公司 袋體及相關方法
CN113165781A (zh) * 2018-09-25 2021-07-23 特克逊国际有限公司 袋子及相关方法
JP2022508501A (ja) * 2018-09-25 2022-01-19 テクソム インターナショナル リミテッド 袋および関連方法
JP7199548B2 (ja) 2018-09-25 2023-01-05 テクソム インターナショナル リミテッド 袋および関連方法
US11827418B2 (en) 2018-09-25 2023-11-28 Tecksom International Limited Bag and related methods

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