EP1642839B1 - Sachet multiparois avec une fermeture à glissière - Google Patents

Sachet multiparois avec une fermeture à glissière Download PDF

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Publication number
EP1642839B1
EP1642839B1 EP05256150A EP05256150A EP1642839B1 EP 1642839 B1 EP1642839 B1 EP 1642839B1 EP 05256150 A EP05256150 A EP 05256150A EP 05256150 A EP05256150 A EP 05256150A EP 1642839 B1 EP1642839 B1 EP 1642839B1
Authority
EP
European Patent Office
Prior art keywords
profile
closure
package
panel
bag
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
EP05256150A
Other languages
German (de)
English (en)
Other versions
EP1642839A1 (fr
Inventor
Greg W. Melchoir
Jimmy Best
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.)
Reynolds Consumer Products Inc
Original Assignee
Reynolds Consumer Products Inc
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 Reynolds Consumer Products Inc filed Critical Reynolds Consumer Products Inc
Publication of EP1642839A1 publication Critical patent/EP1642839A1/fr
Application granted granted Critical
Publication of EP1642839B1 publication Critical patent/EP1642839B1/fr
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
    • 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
    • B65D33/2516—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 comprising tamper-indicating means, e.g. located within the fastener
    • 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
    • B65D33/2541—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 characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape

Definitions

  • the present invention relates to a multi-wall bag or sack. More specifically, the present invention relates to a multi-wall bag that includes a reclosable profile across the open mouth of the bag such that the profile can be used to reclose the bag after initial opening.
  • multi-wall bags or sacks are used in many packaging applications, often for containing a large supply of food product.
  • One common example of a multi-wall bag application is in the storage and packaging of pet foods, and specifically dog food.
  • a multi-wall sack is often used for storing large quantities of pet food, such as prepackaged bags that include 8 Kg (seventeen pounds) and greater of dog food.
  • multi-wall bags are formed from a laminated stock of material.
  • the stock of material includes an inner plastic liner, one or more layers of craft paper and an outer face sheet that typically includes product information.
  • the multilayer stock sheet is processed into a tubular shape such that the inner plastic layer lines the internal area of the tube that will become the bag interior.
  • gussets are formed along each side of the bag to allow the bag to expand upon filling. After the gussets have been formed, a bottom or top seal is formed and the food product is filled into the bag through the unsealed end.
  • a closure flap is used to seal the contents of the bag.
  • a tear string is inserted behind the closure flap such that the tear string can be used to initially open the bag.
  • the open mouth of the bag cannot be resealed other than by folding the bag over on top of itself as is conventionally known.
  • EP0450741 discloses the preamble of claim 1 and describes a multi-ply bag comprising top and bottom panels which carry respective complementary profiles of a profile closure.
  • the outer layer of the bottom panel extends beyond the profile closure and forms a flap.
  • the parts of the top and bottom panels carrying the closure profiles are folded one or more times around the resealable closure and the flap is folded around the profile closure and is stuck to the outer layer of the top panel.
  • a tear strip may be provided between the top layer of the top panel and the flap.
  • US 2004/0058039A1 discloses a package comprising top and bottom panels with respective complementary profiles of a profile closure having a slider device for opening and closing the closure, these profiles including respective sealing flanges attached to the top and bottom panels.
  • the material of the top and bottom panels extends beyond the profile closure and slider, around the latter, as a continuous piece, to form a tamper-evident structure covering the closure and slider.
  • a tear strip may be provided for tearing the tamper-evident structure.
  • WO01/53158 discloses a package comprising top and bottom panels with respective complementary profiles of a profile closure having a slider device for opening and closing the closure.
  • the top and bottom panels extend beyond the profile closure and slider as respective flaps which are sealed together to form a tamper-evident structure covering the closure and slider.
  • the present invention relates to a multi-wall bag that includes a reclosable profile closure extending across the open mouth of the package such that the bag can be reclosed after initial opening.
  • a multi-wall package comprising:
  • the sealing flange of the first profile is coupled to the sealing flange of the second profile.
  • a tear member is integrally formed with the profile closure.
  • the package further comprises a first side edge and a second side edge, wherein the profile closure has respective portions which extend past the first side edge and the second side edge.
  • the first profile is joined to the second profile to define a first stop area and a second stop area, wherein the first stop area is formed on the portion of the closure profile extending past the first side edge of the package and the second stop area is formed on the portion of the closure profile extending past the second side edge of the package.
  • the top panel, the bottom panel and the pair of side panels are integrally formed with each other.
  • the inner layer of the top panel, the bottom panel and each side panel is plastic.
  • the outer layer of the top panel, the bottom panel and each side panel is formed from paper.
  • the multi-wall structure includes one or more intermediate layers formed from a paper material, while the inner layer is formed from a plastic material.
  • the profile closure is positioned along the open mouth of the bag between the top panel and the bottom panel, and extends through each of the side panels that join the top and bottom panels such that the profile closure extends past both a first side edge of the package and a second side edge of the package.
  • the profile closure is a conventional item that includes a pair of mating profiles that can be selectively engaged and disengaged.
  • the closure flap formed on the bottom panel of the package is folded over the open mouth of the package and attached to the top panel.
  • the closure flap entraps the slider device between the outer layer of the top panel and the inner layer of the closure flap.
  • the slide device is protected from both damage and separation from the profile closure.
  • the tear member is positioned between the sealing flange of the second profile and the bottom panel of the multi-wall bag.
  • the tear member can be integrally extruded with the profile closure. Once the bag is in its closed, sealed condition, the tear member can be used to initially open the bag by tearing the portion of the closure flap positioned above the tear member.
  • the first and second profiles are sealed to each other at each end of the bag to define a first stop area and a second stop area.
  • the first and second stop areas prevent the slider from traveling past the outer ends of the profile closure and becoming separated from the profile closure.
  • both the first stop area and the second stop area are formed on the portions of the closure profile that extend past the first and second side edges of the bag, respectively.
  • the bottom end of the package is left open for filling of product into the open interior of the bag. Once the package has been filled with material, the bottom end of the package is sealed and the filled package can be sold.
  • a multi-wall bag that includes a profile closure that allows the multi-wall bag to be reclosed after initial opening.
  • the multi-wall bag 12 is formed using an upstream bag formation process that results in the bag 12 having an open bottom end and an open mouth.
  • the bag 12 is formed from a tube of material and processed to include a first side edge 18 and an opposite, second side edge 20.
  • the bags 12 are formed at a bag forming facility and the individual bags stacked onto a pallet and shipped onto a second location for filling and sealing. Once the bag 12 has been filled with a product, the open bottom end is sealed and the product is ready for shipment and sale to a customer.
  • the multi-wall bag 12 includes a top panel 22 and a bottom panel 24.
  • the top and bottom panels 22, 24 are joined to each other by a first side panel and a second side panel.
  • the top panel 22, bottom panel 24 and pair of side panels are formed from a continuous sheet of base material that is folded and cut into the configuration shown in Figure 1.
  • the first and second side panels form a folded gusset such that the sides of the open bag interior can expand as product is loaded into the bag interior.
  • both the top panel 22 and the bottom panel 24 are formed from a supply of material that includes a multi-wall cross-section, as illustrated.
  • the top and bottom panels 22, 24 include three distinct layers. However, it is contemplated that the top and bottom panels 22, 24 could have only two layers or have many more layers, such as four or five. Since the top panel 22 and the bottom panel 24 are formed from the same material, the two elements have a common cross-sectional appearance, as illustrated.
  • the top panel 22 includes an inner layer 46 and an outer layer 48.
  • the inner layer 46 is a plastic liner that is typically formed from conventional plastic material, such as polyethylene or polypropylene.
  • the plastic inner layer 46 is either directly joined to the outer layer 48 or is joined to another intermediate layer 50, as shown in Figure 2.
  • the intermediate layer 50 is formed from craft paper, which is typically inexpensive and formed from recycled fiber.
  • the outer layer 48 is a face sheet also formed from a paper material that has a glossy or smooth outer surface 52. The outer surface 52 allows graphics and other information to be printed onto the outer surface 52.
  • the intermediate layer 50 is a single layer of craft paper. However, it is contemplated by the inventors that the intermediate layer 50 could have multiple layers of craft paper, depending upon the thickness and strength required for the multi-wall bag.
  • the bottom panel 24 includes a closure flap 54 that extends past the top edge 56 of the top panel 22.
  • the closure flap 54 extends to an outer edge 58 and may include less than all of the layers of the stock material used to form the multi-wall bag.
  • the closure flap 54 includes only the outer layer 48 and the intermediate layer 50.
  • the plastic inner layer 46 terminates at a location generally in line with the top edge 56 of the top panel 22.
  • the open mouth of the multi-wall bag 12 receives a profile closure 10 that allows the bag to be repeatedly opened and closed as desired.
  • the profile closure 10 includes a first profile 68 and a second profile 70.
  • the first and second profiles 68, 70 are configured to releasably mate with each other in a conventional manner.
  • the first profile 68 includes a male closure element while the second profile 70 includes a female closure element.
  • the profile closure 10 includes a slider 66 such that movement of the slider 66 along the length of the profile closure separates the male and female profiles when the slider is moved in a first direction and re-engage the male and female profiles when the slider is moved in a second, opposite direction.
  • the first profile 68 includes a first sealing flange 76 while the second profile 70 includes a second sealing flange 78.
  • a tamper evident membrane 80 extends between the first and second sealing flanges 76, 78.
  • the tamper evident membrane includes a line of weakness such that upon initial opening of the profile closure 10, the tamper evident membrane 80 ruptures along the line of weakness.
  • a first end 82 of the tamper evident membrane 80 is attached to the first sealing flange 76, while a second end 84 is attached to the second sealing flange 78.
  • first and second sealing flanges 76, 78 could be co-extruded with each other and include a line of weakness.
  • the sealing flange of one of the profiles 68, 70 could be extended and attached to the other of the profiles 68, 70.
  • the tamper evident membrane 80 prevents food products contained within the bag interior from passing between the first and second sealing flanges 76, 78 and contacting the closure elements.
  • both the first sealing flange 76 and the second sealing flange 78 include a sealant layer that aid in bonding the first and second sealing flanges 78, 80 to the respective inner layers 46 of the top panel 22 and the bottom panel 24.
  • a tear member 98 is moved into position between the second sealing flange 78 and the bottom panel 24, as illustrated by arrow 100.
  • the tear member 98 is an extruded plastic bead.
  • the tear member 98 could be a string, plastic tape or any other structure having sufficient strength to open the bag after it is closed.
  • the tear member 98 could be integrally formed with the profile closure 10.
  • the tear member 98 could be extruded with one of the first and second sealing flanges 76, 78.
  • the tear member 98 is positioned between an outer surface 102 of the second sealing flange 78 and the intermediate layer 50 of the closure flap 54.
  • the movement of the tear member 98 in the direction illustrated by arrow 100 is limited by the seal between the second sealing flange 78 and the plastic inner layer 46 of the bottom panel 24.
  • the first closure profile 68 is bonded to the second closure profile 70 to prevent the slider device 66 from traveling past the outer edges of the profile closure 10.
  • the seal between the first profile 68 and the second profile 70 provides end stops for the movement of the slider 66.
  • a profile tab 108 extends past each of the side edges 18, 20 of the multi-wall bag 12.
  • the profile tabs 108 provide a visual indication that the profile closure 10 is included in the bag 12 and include the stop areas for the slider.
  • the tear member 98 also extends past the side edges 18, 20 to provide a location for the user to grasp the tear member and open the bag in the manner to be discussed below.
  • the closure flap 54 is folded upward as illustrated by arrow 112 in Figures 3 and 4.
  • the top edge 56 of the top panel 22 is folded over such that the slider 66 is positioned between the closure flap 54 and the outer surface 52 of the top panel 22.
  • the closure flap 54 is sealed to the outer surface 52 of the top panel by a pair of sealing members 114, as best shown in Figure 5.
  • the sealing members apply pressure to an adhesive layer between the closure flap 54 and the top panel 22 to create a bond between the closure flap 54 and the top panel 22.
  • the profile closure 10 including the slider 66 is enclosed and entrapped between the closure flap 54 and the top panel 22.
  • the slider 66 is completely enclosed and protected from damage during handling of the multi-wall bag 12.
  • the slider device 66 Since the slider device 66 is enclosed and protected by the closure flap 54, the slider device 66 will not be damaged or knocked off of the profile closure 10 during handling of the multi-wall bag 12 after the bag has been filled with product. For example, in a typical application in which the bag is filled with 20-30 Kg (50-60 pounds) of dog food, the stacking and unstacking of a supply of bags would otherwise result in the slider device 66 being dislodged from the profile closure during handling of the bags after the bags are filled with product. In accordance with the present invention, the slider device 66 is enclosed and protected.
  • the bag is transferred for downstream processing, which typically includes stacking and shipment.
  • downstream processing typically includes stacking and shipment.
  • the bottom end of each bag 12 remains open while the top end of the bag includes the profile closure 10 and is sealed by the closure flap 54.
  • the bags are loaded through the open bottom end. Once the bag has been loaded, the bottom end 14 is sealed and the product can be shipped to a consumer.
  • the tear member 98 can be used to initially open the bag by pulling the tear member 98 as shown by arrow 114.
  • the tear member 98 tears through both the intermediate layer 50 and the outer layer 48 of the closure flap 54.
  • the profile closure 10 including the slider 66, can be removed from between the portion of the closure flap 54 that remains attached to the top panel 22. Once removed, the profile closure 10 extends past the top edge of the bag and allows the slider 66 to separate and reengage the first and second profiles 76, 78.

Landscapes

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

Claims (10)

  1. Sac à parois multiples comprenant :
    un panneau supérieur (22), un panneau inférieur (24), le panneau inférieur comprenant un rabat de fermeture (54) qui s'étend au-delà du rebord du panneau supérieur (22), sur la fermeture à profils et fixé au panneau supérieur (22) de façon à rendre l'emballage étanche ;
    une paire de panneaux latéraux rejoignant les panneaux supérieur et inférieur, dans lequel le panneau supérieur (22), le panneau inférieur (24) et les panneaux latéraux comprennent au moins une couche interne (46) et une couche externe (48) ;
    une fermeture à profils (10) possédant des premier (68) et second (70) profils d'accouplement, le premier profil comprenant une première bride d'étanchéité (76) fixée au panneau supérieur (22) et le second profil de fermeture comprenant une seconde bride d'étanchéité (78) fixée au panneau inférieur (24) ; et
    un curseur (66) monté de façon opérationnelle sur la fermeture à profils (10) et mobile pour emboîter le premier profil avec le second profil, l'emballage comprenant un élément de déchirure (98), le curseur est coincé entre la couche externe (52) du panneau supérieur (22) et la couche interne (50) du rabat de fermeture (54) lorsque l'emballage est scellé, caractérisé en ce que ledit élément de déchirure (98) est situé entre le second profil (70) et la couche interne du panneau inférieur (24), moyennant quoi l'élément de déchirure (98) peut être utilisé pour séparer le rabat de fermeture (54) du panneau inférieur (24).
  2. Emballage selon la revendication 1, dans lequel la bride d'étanchéité (76) du premier profil est couplée à la bride d'étanchéité (78) du second profil.
  3. Emballage selon la revendication 1, dans lequel l'élément de déchirure (98) est formé de façon solidaire avec la fermeture à profils (10).
  4. Emballage selon l'une quelconque des revendications précédentes, dans lequel l'emballage comprend en outre un premier rebord latéral (18) et un second rebord latéral (20), dans lequel la fermeture à profils (10) possède des parties respectives (108) qui s'étendent au-delà du premier rebord latéral et du second rebord latéral.
  5. Emballage selon la revendication 4, dans lequel le premier profil (68) est joint au second profil (70) afin de définir une première zone d'arrêt et une seconde zone d'arrêt, dans lequel la première zone d'arrêt est formée sur la partie (108) du profil de fermeture qui s'étend au-delà du premier rebord latéral (18) de l'emballage, et la seconde zone d'arrêt est formée sur la partie (108) du profil de fermeture qui s'étend au-delà du second rebord latéral (20) de l'emballage.
  6. Emballage selon l'une quelconque des revendications précédentes, dans lequel le panneau supérieur (22), le panneau inférieur (24) et la paire de panneaux latéraux sont formés de façon solidaire les uns avec les autres.
  7. Emballage selon l'une quelconque des revendications précédentes comprenant en outre une membrane d'étanchéité (80) jointe entre la première bride d'étanchéité (76) du premier profil et la seconde bride d'étanchéité (78) du second profil.
  8. Emballage selon l'une quelconque des revendications précédentes, dans lequel la couche interne (46) du panneau supérieur (22), du panneau inférieur (24) et de chaque panneau latéral est en plastique.
  9. Emballage selon l'une quelconque des revendications précédentes, dans lequel la couche externe (52) du panneau supérieur (22), du panneau inférieur (24) et de chaque panneau latéral est en papier.
  10. Emballage selon l'une quelconque des revendications précédentes, dans lequel le panneau supérieur (22), le panneau inférieur (24) et chaque panneau latéral comprennent en outre au moins une couche intermédiaire (50) en papier.
EP05256150A 2004-09-30 2005-09-30 Sachet multiparois avec une fermeture à glissière Expired - Lifetime EP1642839B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/956,395 US20060072859A1 (en) 2004-09-30 2004-09-30 Multi-wall bag including slider actuated reclosable zipper

Publications (2)

Publication Number Publication Date
EP1642839A1 EP1642839A1 (fr) 2006-04-05
EP1642839B1 true EP1642839B1 (fr) 2007-09-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05256150A Expired - Lifetime EP1642839B1 (fr) 2004-09-30 2005-09-30 Sachet multiparois avec une fermeture à glissière

Country Status (3)

Country Link
US (1) US20060072859A1 (fr)
EP (1) EP1642839B1 (fr)
DE (1) DE602005002514T2 (fr)

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US7819583B2 (en) * 2005-11-04 2010-10-26 Graphic Packaging International, Inc. Bag structures and methods of assembling the same
US20080056622A1 (en) * 2006-08-18 2008-03-06 Andrew Austreng Resealable package with tamper-evident structure and method for making same
US7866011B2 (en) * 2007-04-27 2011-01-11 Illinois Tool Works Inc. Zipper with fold over elements for reclosable package
US8142077B2 (en) * 2008-04-16 2012-03-27 Graphic Packaging International, Inc. Bag structures and methods of assembling the same
US20090263048A1 (en) * 2008-04-16 2009-10-22 Iannelli Ii Michael Louis Bag Structures And Methods Of Assembling The Same
US20100051152A1 (en) * 2008-09-04 2010-03-04 Calva International, LLC DBA CleverWraps, LLC Disposable protector for electronic devices
US8104961B2 (en) * 2009-03-24 2012-01-31 Coating Excellence International Llc Bag and zipper assembly with secured side gussets
US20100310195A1 (en) * 2009-06-05 2010-12-09 Gateway Packaging Company Layered bag with re-sealable closure assembly
US9034444B2 (en) * 2011-05-30 2015-05-19 Basf Se Paper and cardboard packaging with barrier coating of a polymer mixture
US10106297B2 (en) 2016-12-29 2018-10-23 Inteplast Group Corporation Reclosable bag with header
US9511911B1 (en) * 2016-01-29 2016-12-06 Inteplast Group Corporation Reclosable bag with header
USD812488S1 (en) 2016-01-29 2018-03-13 Inteplast Group Corporation Reclosable bag with tearable header
NL2018192B1 (en) * 2017-01-18 2018-07-26 Daklapack Europe B V Shipping envelope and method
WO2018191211A1 (fr) * 2017-04-13 2018-10-18 Alvin Widitora Sac refermable et inviolable permettant la collecte de matériaux

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Also Published As

Publication number Publication date
US20060072859A1 (en) 2006-04-06
DE602005002514T2 (de) 2008-01-31
DE602005002514D1 (de) 2007-10-31
EP1642839A1 (fr) 2006-04-05

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