WO2010053645A1 - Ensemble fermeture à éclatement élevé pour grands emballages - Google Patents

Ensemble fermeture à éclatement élevé pour grands emballages Download PDF

Info

Publication number
WO2010053645A1
WO2010053645A1 PCT/US2009/059331 US2009059331W WO2010053645A1 WO 2010053645 A1 WO2010053645 A1 WO 2010053645A1 US 2009059331 W US2009059331 W US 2009059331W WO 2010053645 A1 WO2010053645 A1 WO 2010053645A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure
flange
flanges
upper portion
profile
Prior art date
Application number
PCT/US2009/059331
Other languages
English (en)
Inventor
Rusty Koenigkramer
David J. Anzini
Steven Ausnit
Original Assignee
Illinois Tool Works 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 Illinois Tool Works Inc. filed Critical Illinois Tool Works Inc.
Publication of WO2010053645A1 publication Critical patent/WO2010053645A1/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
    • 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
    • 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 closure assemblies for packages which are large bags, particularly closure assemblies which achieve high burst strengths while allowing an easy-to- open configuration, and the methods for manufacture thereof.
  • the prior art has addressed these deficiencies by folding over the end of the package, particularly a multi-wall package, using an expensive label as tape thereby allowing successful filling and transport.
  • the prior art has addressed these deficiencies by using a liner peel seal below the zipper and a solid tear line in the zipper flange to provide a fill and transport system that does not rupture and spill the contents.
  • these methods have slow rates of production, as well as increased costs of production, and frequently do not result in a satisfactory product for the consumer.
  • a closure assembly for packages, particularly large bags with a first profile with a first upper separating portion, a first flange, and an interior flange, and a second profile with a second upper separating portion and a second flange.
  • a peel seal is formed between the lower end of the interior flange and a generally central portion of the second profile. This causes the external forces on a bag from bottom filling or shock loading (or forces from within the bag, typically created when the bag is dropped on its top or side) to be directed towards the junction of the interior flange and the first upper portion, thereby redirecting the peel seal from a peel position to a shear position.
  • Figure 1 is a plan view, partially in phantom, of a typical reclosable package incorporating the zipper assembly of the present invention.
  • Figure 2 is a cross-sectional view along the upper portion of plane 2-2 of Figure 1, showing the cross section of the zipper assembly of the present invention.
  • Figure 3 is a cross-sectional view along the upper portion of plane 2-2 of Figure 1, showing the cross section of an alternative embodiment of the zipper assembly of the present invention. Additionally, an alternative area of detail is shown with a variation of the alternative embodiment.
  • Figure 4 is a cross-sectional view along the upper portion of plane 2-2 of Figure 1, showing a cross section of a portion of the package or bag in an unstressed configuration.
  • Figure 5 is a cross-sectional view along the upper portion of plane 2-2 of Figure 1, showing a cross section of a portion of the package or bag when an internal load (i.e., a force from within the package or bag) is applied thereto.
  • Figure 6 is a cross-sectional view of the upper portion of plane 2-2 of Figure 1, showing a cross section of a portion of the package or bag and further showing the resultant forces on the zipper assembly when an internal load is applied to the package or bag.
  • Figure 7 is a cross-sectional view of a first alternative embodiment of the zipper.
  • Figure 8 is a cross-sectional view of a second alternative embodiment of the zipper.
  • Figure 9 is a cross-sectional view of a third alternative embodiment of the zipper showing the use of reinforcing ribs on one profile.
  • Figure 10 is a cross-sectional view of a fourth alternative embodiment of the zipper showing a tamper-evident removable hood.
  • Figure 11 is a cross-sectional view of a fifth alternative embodiment of the zipper, which substitutes a secondary zipper-type assembly for the peel seal.
  • Figure 12 is a cross-sectional view of the fifth alternative embodiment of the zipper, shown in a loaded position thereby putting the secondary zipper-type assembly into a shear configuration.
  • Figure 13 is a cross-sectional view of the zipper profile, prior to attachment to the package or bag walls, and further prior to the stomping of the ends and the insertion of the sliders.
  • Figure 14 is a perspective view of the zipper profile, prior to attachment to the package or bag walls, and further prior to the stomping of the ends and the insertion of the sliders.
  • Figure 15 is a plan view of the vacuum device used to spread the flanges of the zipper prior to the adhesive insertion step .
  • Figure 16 is a cross-sectional view of glue or similar adhesive being inserted onto the interior of the flanges of the zipper.
  • Figure 17 is a schematic of the processing of the packages or bags after the zipper has been attached.
  • Figures 17A and 17B are alternative plan views of the sealing of the flange ends of Figure 17.
  • Figure 18 is a plan view of the reclosable package or bag with the zipper attached thereto.
  • Figure 19 illustrates a first alternative for manufacturing the zipper.
  • Figure 20 illustrates a second alternative for manufacturing the zipper.
  • Figure 21 illustrates a third alternative for manufacturing the zipper.
  • Figure 22 is a cross-sectional view of a first alternative top-filling embodiment of the zipper.
  • Figure 23 is a perspective view of the walls of the package, with strips of polyethylene, in preparation for the second alternative top-filling embodiment of the zipper, as shown in Figure 24.
  • Figure 24 is a cross-sectional view showing the second alternative top-filling embodiment of the zipper attached to the package walls.
  • Figure 25 is a cross-sectional view showing the third alternative top-filling embodiment of the zipper attached to the package walls.
  • Figure 26 is a cross-sectional view showing the fourth alternative top-filling embodiment of the zipper attached to the package walls.
  • Figure 27 is a cross-sectional view of a first embodiment of a high burst closure without a zipper.
  • Figure 28 is a cross-sectional view of a second embodiment of a high burst closure without a zipper.
  • Figure 29 is a cross-sectional view of a third embodiment of a high burst closure without a zipper.
  • Figure 30 is a cross-sectional view of a first variation of the attachment of a high burst closure to package or bag walls.
  • Figure 31 is a cross-sectional view of a second variation of the attachment of a high burst closure to package or bag walls.
  • Figure 32 is a cross-sectional view of a third variation of the attachment of a high burst closure to package or bag walls.
  • Figure 33 is a cross-sectional view of a fourth variation of the attachment of a high burst closure to package or bag walls.
  • Figure 34 is a cross-sectional view of a high burst closure, including a handle structure as a bag wall extension or similar structure.
  • Figure 35 is an alternative cross-sectional view of a high burst closure, including a handle structure.
  • Figure 36 is an alternative cross-sectional view of a high burst closure, including a handle structure implemented as a flange extension.
  • FIG. 1 is a perspective view of a typical reclosable package 100, such as a large bag, which incorporates the zipper assembly 10 of the present invention.
  • Reclosable package 100 may be formed by form fill and seal or by other methods.
  • Reclosable package 100 includes a front wall 102 and a rear wall 104.
  • Front and rear walls 102, 104 may be separate polymeric or multi-sheet panels sealed together at edges 106, 108.
  • front and rear walls 102, 104 may be provided as a single tube with or without a lap seal in the longitudinal direction.
  • Front and rear walls 102, 104 may be formed from virtually any substrate in the packaging art - laminate films, plain polyethylene or polypropylene films, multi-wall paper, and polypropylene woven layer bags or any combination or hybrid thereof. Additionally, gussets (not shown) may be provided between front and rear walls 102, 104 at edges 106, 108, or similarly at bottom 110.
  • Bottom 110 may be sealed shut, or folded over and then glued.
  • Reclosable package 100 is typically bottom filled, so that the seal or glued fold may be formed after filling.
  • other methods of filling such as top filling before the complete application of zipper assembly 10, are equally applicable to the present invention and are disclosed herein.
  • a longitudinal seal or seam 111 which can be a lap or fin seal or seam, may optionally be formed in a generally central longitudinal location on rear wall 104 and is shown in phantom on Figure 1.
  • Mouth 112 is formed at the top of the reclosable package 100 of Figure 1, and is reclosably sealed by zipper assembly 10.
  • zipper assembly 10 is formed from polymeric materials and includes first profile 12, second profile 14 and optional slider 15 (see Figure 1).
  • First profile 12 includes first interlocking element 16 and first flange 18.
  • second profile 14 includes second interlocking element 20 and second flange 22.
  • Optional slider 15 is mounted on first and second profiles 12, 14 and operates in a conventional manner by interlocking first and second interlocking elements 16, 20 of respective first and second profiles 12, 14 when moved in a closing direction and separating first and second interlocking elements 16, 20 of respective first and second profiles 12, 14 when moved in an opening direction.
  • Peel seal 24 is formed between central locations of first and second flanges 18, 22. Peel seal 24 may be replaced by other frangible (and therefore tamper-evident) seals, or even a rip- cord (either supplementing or substituting for the peel seal 24). Peel seal 24 is more resistant to shear forces than to peeling forces. Peel seal 24, or any substitutes therefor, particularly when loaded in a shear configuration, is typically sufficiently strong to support the loads required by bottom filling. Peel seal 24 is typically pre-activated, but may be activated at the time of package or bag conversion. Additionally, first flange 18 in Figure 2 includes upward fold 26 immediately or proximately below peel seal 24.
  • First flange 18 continues upward from upward fold 26 to downward fold 28, wherein hard seal 30 is formed between a portion of first flange 18 above peel seal 24.
  • This configuration can be considered to divide first flange 18 into three portions - first portion 34 which extends from first interlocking element 20 to upward fold 26, second portion 36 which extends from upward fold 26 to downward fold 28, and third portion 38 extends from downward fold 28 to first distal end 40 thereby providing an area for sealing, gluing, or otherwise securing to front wall 102 of package 100.
  • second flange 22 extends from second interlocking element 20, past peel seal 24, to second distal end 42 thereby providing an area for sealing, gluing, or otherwise securing to rear wall 104 of package 100.
  • first and second flanges 18, 22 are typically sealed, glued or otherwise secured to the upper exterior surfaces of front and rear walls 102, 104. However, some embodiments may seal, glue or otherwise secure first and second flanges 18, 22 to upper interior surfaces of respective front and rear walls 102, 104.
  • second portion 36 of first flange 18 is omitted, so that first and third portions 34, 38 are separate sheets or segments of web.
  • Third portion 38 is joined to a generally central location of first portion 34 by hard seal 30.
  • hard seal 30 can be omitted if first and third portions 34, 38 are formed integrally and simultaneously by extrusion, as shown in the alternative area of detail of Figure 3.
  • Figures 7 and 8 disclose embodiments, wherein first flange 18 is relatively short, extending from profile 16 and terminating upwardly adjacent to gap 25.
  • First flange 18 is sealed or otherwise joined to extension segment 46 at point 50.
  • Second flange 22 includes proximal segment 21 which extends from profile 20.
  • Second flange 22 further includes distal segment 23 which is joined to proximal segment 21 at fold 44 wherein a line of weakness, such as a perforated or scored line, is provided in order to provide additional tamper evidence after opening.
  • Distal segment 23 extends upwardly from fold 44 and terminates downwardly adjacent to gap 25.
  • Second flange 22 is sealed or otherwise joined to extension segment 48 at point 52 and distal segment 23 is sealed or otherwise joined to first extension segment at point 54 and adjacent to peel seal 24.
  • connection segments 50, 52, 54 are typically formed by heat sealing. Peel seal 24 is further formed between faces (or facing portions) of proximal segment 21 and distal segment 23.
  • Extension segments 46, 48 are typically formed with nominal 6 mil film, but those skilled in the art will recognize a range of equivalents after review of this disclosure. Extension segments 46, 48 are joined, typically by adhesive, to front and rear walls 102, 104, respectively.
  • the embodiment of Figure 7 differs from that of Figure 8 in that the extension segment 48 of Figure 8 includes fold 56 between inner portion 57 and outer portion 59. Inner portion 57 is . sealed to second flange 22 at point 52 while outer portion 59 descends past flanges 18, 22.
  • the alternative embodiment of Figure 9 includes reinforcing ribs 60 on flange 22 to increase the stiffness of flange 22.
  • the alternative embodiment of Figure 10 (based on the construction of Figure 3) includes tamper-evident header 62 formed of film enclosing zipper assembly 10. Tamper-evident header 62 includes lines of weakness 64, 66, typically formed by a perforated or scored line, in order to provide access to zipper assembly 10.
  • FIG 11 The alternative embodiment of Figure 11 (unloaded) and Figure 12 (loaded) substitutes the separable connection of secondary zipper 27 for the separable connection of peel seal 24 of the previous embodiments.
  • Secondary zipper 27 includes first interlocking profile 29 attached or sealed to first flange 18 and second interlocking profile 31 attached or sealed to second flange 22.
  • the loaded configuration, or other forces from within the package 100 causes a shear force to be applied to secondary zipper 27.
  • the possibility of the substitution of the secondary zipper 27 for the peel seal 24 is envisioned for all of the disclosed embodiments of zipper assembly 10.
  • FIGs 13- 18 The manufacturing process of reclosable package or bag 100 is illustrated in Figures 13- 18.
  • a continuous length of interlocked zipper profiles 12, 14 is illustrated in Figures 13 and 14 and is typically provided from a spool 190 (see Fig. 17).
  • the flanges 18, 22 of zipper profiles 12, 14 are then spread apart, typically by a spreader apparatus 192 such as is illustrated in Figure 15 (also see Fig. 17) wherein the portion of flanges 18, 22 immediately below the interlocked profiles 12, 14 is fed into the nip 200 between rollers 202, 204.
  • a portion of flanges 18, 22 extends therefrom and is engaged by vacuum elements 206, 208.
  • Vacuum elements 206, 208 spread the portions of flanges 18, 22 extending from rollers 202, 204 so that adhesive, typically a hot-melt reactive adhesive such as a hot melt, cross-linkable adhesive (particularly, a hot melt cross-linkable polyurethane reactive adhesive), can be applied or otherwise placed by nozzle 210 onto the interior of flanges 18, 22 as shown in Figure 16 (those skilled in the art will recognize that some adhesives should be applied by a downwardly pointing nozzle 210 with the orientation of the flanges 18, 22 during adhesive application changed in accordance therewith). Additionally, optional plasma or corona discharge station 209 may change the surface energy (described later in detail herein) of the flanges 18, 22 prior to application of adhesive. The flanges 18, 22 are temporarily clamped by clamps 194 (see Fig. 17), or pressure similarly applied, to the outside bag walls 102, 104 of successive packages or bags 100 (typically supplied with an open bottom and free of contents).
  • adhesive typically a hot-melt
  • the adhesive layer is typically applied to flanges 18, 22 in a path divergent or parallel to the bag supply so that the flanges 18, 22 are subsequently guided from the divergent or parallel path to a position wherein the bag walls are captured within the flanges 18, 22.
  • Zipper 10 is stomped at stomp locations 68 at package-width intervals, typically two stomps 68 at a time, by stomper 220 and slider 15 is inserted therebetween by slider inserter 222 as shown in Figure 17.
  • the laterally extending excess portions of the flanges are heat sealed, glued, or ultrasonically bonded to each other by bonding station 224.
  • Figure 17A illustrates a possible configuration for the flanges 18, 22 to be sealed to each other in an inverted T-shaped area 400 below end stomp 68 between successive bags 100 by bonding station 224.
  • Figure 17B illustrates a possible configuration for the flanges 18, 22 to be glued to each other in rectangular area 402 between edges of successive bags 100 and below end stomp 68.
  • the zippers are then cut at cutting station 226 to achieve the package 100 illustrated in Figure 18 (with the phantom lines illustrating a gusset between the front and rear walls).
  • the resulting packages or bags 100 are typically unfilled and have an open bottom.
  • Optional filling station 225 is illustrated prior to cutting station 226.
  • Optional filling station 225 may be top filling (in which case, zippers such as illustrated in Figures 22 or 24-26 may be used) or bottom filling (in which case, the packages or bags are inverted and a bottom sealer is included with the filling station 225).
  • top filling in which case, zippers such as illustrated in Figures 22 or 24-26 may be used
  • bottom filling in which case, the packages or bags are inverted and a bottom sealer is included with the filling station 225.
  • separate subsequent filling steps may be performed at a different location to fill packages or bags 100 with contents and seal the bottom 110 of the package or bag 100.
  • Alternative embodiments may cut the zippers prior to the application of the adhesive, may include pre-mounted sliders, or sliders inserted and stomps formed prior to the gluing process.
  • Walls 102, 104 may be folded to form gussets prior to the securing of the zipper assembly 10 thereto.
  • gussets may be attached below or within the flanges 18, 22 by glue dots or similar connection methods.
  • glue may be applied in between the inside faces of the gussets or in between the outside faces of the gussets.
  • Figures 19, 20 and 21 illustrate variations in the formation of the zipper assembly 10.
  • Figure 19 illustrates how first and second sheets of web 300, 302 can be joined by peel seal 24, a fold 28 formed in second sheet of web 302 and then sealed to first and second flanges 18, 22 thereby achieving a construction similar to Figure 2.
  • Figure 20 illustrates first and second profiles 12, 14 being joined by peel seal 24 and first sheet of web 300 being slit into two pieces which are sealed to flanges 18, 22 thereby forming a construction similar to that illustrated in Figure 3.
  • a lower portion of first flange 18 is removed and then resealed to an upper portion of first flange 18 thereby likewise forming a construction similar to that illustrated in Figure 3.
  • first flange 18 can be folded to achieve the construction of Figure 2.
  • the T-shaped configuration of first flange 18 can be achieved by simultaneous extrusion of a single T-shaped flange.
  • hot melt, cross-linkable adhesives such as hot melt polyurethane reactive adhesive which are cross-linkable
  • this adhesive has been found superior for the construction of all seams of package or bag 100, including bottom seam 110 and longitudinal seam 111. This was determined by tests in which the package 100 was loaded with 2.5 times its rated load and hung upside down (that is, with the load bearing on the zipper assembly 10) and placed in 140 degree Fahrenheit environment (which is representative of temperatures which may be encountered during shipping) for seventy-two hours. The package 100 was considered to have passed this test if the package 100 maintained its integrity during this period.
  • this test can be performed for the same load (2.5 times rated load) and period (seventy-two hours) at negative 20 degrees Fahrenheit (-2O 0 F.) for simulation of cold environments which may be encountered during transportation and storage in some climates.
  • the hot melt, cross-linkable adhesives (such as hot melt polyurethane reactive adhesive which are cross-linkable) have likewise been found to be superior under these tests and can be applied to all seams of packages, with or without a reclosable zipper.
  • pre-treatment of the olefin structures of the walls 102, 104 (particularly if made from woven polypropylene) and zipper flanges, typically by corona discharge or plasma treatment of the walls and flanges improves the adhesion bond of the hot melt, cross-linkable adhesive (such as hot melt cross-linkable polyurethane reactive adhesive) between the walls and zipper flanges, particularly for film structures having a non-polar surface energy of less than 40 dynes per square centimeter.
  • heat sealing may be effective in instances wherein the bag surface includes resin binder type inks.
  • segment 38 is typically a polyethylene strip that is attached by glue to the bag wall prior to the filling of the package or bag and by a heat seal to flange 18 after the package or bag is filled. This allows the package to be filled with contents through the gap or opening 37 between segment 38 and first flange 18 prior to the joining or sealing of segment 38 to first flange 18.
  • This top filling eliminates the bottom filling typically associated with many of the other disclosed embodiments.
  • polyethylene strips 103, 105 are attached to the exterior of front and rear walls 102, 104 immediately adjacent to mouth 112.
  • Extension segment 46 is typically heat sealed or otherwise attached to polyethylene strip 103 prior to filling of the package 100 and extension segment 48 is typically heat sealed or otherwise attached to polyethylene strip 105 after filling of the package 100 to reach the configuration shown in Figure 24.
  • Figure 24, as well as Figure 25, is illustrated with the zipper assembly 10 of Figure 7, other equivalent zipper configurations could be substituted for this zipper assembly 10, as would be recognized by those skilled in the art after review of this disclosure.
  • Figure 25 shows a third alternative top-filling embodiment of zipper assembly 10, similar to that shown in Figure 24, except that extension segment 46 is glued to front wall 102, typically by hot melt, cross-linkable adhesive (such as hot melt cross-linkable polyurethane reactive adhesive) 107 prior to filling of the package 100, thereby obviating the need for polyethylene strip 103.
  • extension segment 48 is heat sealed to polyethylene strip 105 on rear wall 104.
  • Figure 26 illustrates a zipper assembly 10, similar to that of Figure 3, wherein flange 22 and segment 38 are glued or otherwise sealed or attached to front and rear walls 102, 104 prior to the formation of peel seal 24.
  • Peel seal 24 is formed and activated thereby joining first and second flanges 18, 22 to each other after the filling of package 100 with contents between first and second interlocking elements 16, 20 as shown by arrow labeled as "fill”.
  • This filling may be done by using the slider (see Fig. 1) to separate the first and second interlocking elements 16, 20, filling between first and second interlocking elements, and then using the slider to interlock first and second interlocking elements 16, 20.
  • FIG 27 is a cross-sectional view of a first embodiment of high burst closure 11.
  • High burst closure 11 includes first profile 12 and second profile 14.
  • First profile 12 includes first upper separating portion 17 and first flange 18, integral with each other, formed from a single sheet of polymeric web or similar material.
  • First profile 12 further includes interior flange 19 integrally formed with upper separating portion 17 or attached by a hard seal to the interior surface thereof.
  • Second profile 14 includes second upper separating portion 21 and second flange 22.
  • First peel seal 24 is formed between the lower end of interior flange 19 and a generally central portion of second profile 14. Alternatives for closing first and second upper separating portions 17, 21 are shown in Figures 31 and 32.
  • Figure 28 is a cross-sectional view of a second embodiment of high burst closure 11.
  • the first profile 12 is formed from a first upper separating portion 17 which extends to first peel seal 24.
  • First flange 18 is sealed to a generally central portion of first upper separating portion 17.
  • alternatives for closing first and second upper separating portions 17, 21 are shown in Figures 31 and 32.
  • Figure 29 is a cross-sectional view of a third embodiment of high burst closure 11.
  • a single sheet of polymeric web or similar material is used to form first profile 12.
  • This sheet forms upper separating portion 17 and is folded adjacent to a bottom of peel seal 24 and is then sealed to a generally central exterior portion of first upper separating portion 17, with the remaining portion of the sheet forming first flange 18.
  • Figure 30 is a cross-section view of the first embodiment of the high burst closure of Figure 27 (equally applicable to the embodiments of Figures 28 and 29) with the exterior of first and second flanges 18, 22 sealed to the interior of respective first and second bag walls 102, 104.
  • the interior of the first and second flanges 18, 22 can be attached by adhesive or other means to the exterior of bag walls 102, 104.
  • Figure 31 is a cross-sectional view of the first embodiment of the high burst closure of Figures 27 and 30 (equally applicable to the embodiments of Figures 28 and 29) wherein second peel seal 31 is added between first and. second upper separating portions 17, 21 so that first and second upper ends 17', 21' of respective first and second upper separating portions 17, 21 protrude therefrom thereby providing grips for the user to grasp and peel apart the first and second peel seals 24, 31 in order to open closure 11.
  • Figure 32 is a cross-sectional view of the first embodiment of the high burst closure of Figures 27, 30 (equally applicable to the embodiments of Figure 28 and 29) wherein the first and second upper ends 17', 21' of respective first and second upper separating portions 17, 21 are sealed together by hard seal 29.
  • first and second lines of weakness 33, 35 are formed in respective first and second upper ends 17', 21' under hard seal 29 whereby a user opens closure 11 by grasping an area proximate to hard seal 29 and tearing along the first and second lines of weakness 33, 35 thereby removing the resulting header-like portion of first and second upper ends 17', 21' above the first and second lines of weakness 33, 35 thereby gaining access to first peel seal 24 which is opened by the user by further separating first and second upper separating portions 17, 21.
  • Figure 33 is a cross-sectional view of an embodiment similar to that of Figure 28 wherein first wall 102 extends upwardly and is sealed directly to the generally central portion of first upper separating portion 17, thereby fulfilling the function of first flange 18.
  • first and second upper separating portions 17, 21 are sealed together by hard seal 29 and first and second lines of weakness 33, 35 are formed in respective first and second upper ends 17', 21'.
  • a second peel seal as shown in Figure 31, can replace hard seal 29, or the first and second supper ends 17', 21 ' can remain unsealed as shown in Figure 30.
  • Figure 34 is a cross-sectional view of an embodiment similar to that of Figure 31 wherein first flange 18 is sealed to first bag wall 102 and first bag wall 102 extends above closure 11 and includes aperture 37 which serves as a handle.
  • aperture 37 is formed in a portion of first bag wall 102 which extends above first flange 18.
  • first bag wall 102 can be integral with first flange 18 (i.e., first bag wall 102 sealed directly to first upper separating portion 17 thereby eliminating the need for a separate first flange 18) and a separate bag wall extension is sealed to the exterior thereof and aperture 37 formed in this separate bag wall extension.
  • Figure 35 is a cross-sectional view of an embodiment similar to that of Figure 32 wherein first bag wall 102 extends above closure 11 and includes aperture 37 which serves as a handle. Furthermore, second peel seal 31 is formed between first upper separating portion 17' (proximate to hard seal 29) and first bag wall 102 (downwardly adjacent from aperture 37).
  • Figure 36 is a cross-sectional view of an embodiment similar to that of Figure 32 wherein an extension 41 of upper separating portion 17 is provided, with an aperture 43 serving as a handle.
  • extension 41 may be implemented in combination with, or in lieu of, the upward extension of first wall 102 illustrated in Figure 34 and the aperture 37 formed therein.

Landscapes

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

Abstract

La présente invention se rapporte à une fermeture à éclatement élevé (10) qui permet le remplissage d’emballages (100), tels que de grands sacs, et offre en outre une meilleure résistance à l’endommagement dû aux chutes ou aux coups de l’emballage rempli. Cela est réalisé par l’utilisation de profilés (12,14) qui combinent une partie supérieure (16,20) d’un profilé et son rebord correspondant (18,22), de manière à former une jointure au-dessus d’un opercule détachable (24) reliant un profilé à l’autre, de sorte que les forces externes exercées sur un emballage ou sac par le remplissage ou les coups soient dirigées vers la jointure, ce qui entraîne une force de cisaillement contre l’opercule détachable (24) ou autre liaison cassable, d’où une augmentation de la résistance de l’emballage aux forces externes.
PCT/US2009/059331 2008-11-07 2009-10-02 Ensemble fermeture à éclatement élevé pour grands emballages WO2010053645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/291,297 US20090067761A1 (en) 2006-08-23 2008-11-07 High burst closure assembly for large packages
US12/291,297 2008-11-07

Publications (1)

Publication Number Publication Date
WO2010053645A1 true WO2010053645A1 (fr) 2010-05-14

Family

ID=41278268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/059331 WO2010053645A1 (fr) 2008-11-07 2009-10-02 Ensemble fermeture à éclatement élevé pour grands emballages

Country Status (2)

Country Link
US (2) US20090067761A1 (fr)
WO (1) WO2010053645A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090067761A1 (en) * 2006-08-23 2009-03-12 Illinois Tool Works Inc. High burst closure assembly for large packages
US8677722B2 (en) * 2006-08-23 2014-03-25 Illinois Tool Works Inc. Hot melt adhesive systems for zipper assemblies on large bag constructions of various substrates
US8204047B2 (en) * 2007-07-20 2012-06-19 Cisco Technology, Inc. Using PSTN reachability to verify caller ID information in received VoIP calls
US20100209026A1 (en) * 2009-02-13 2010-08-19 Rusty Koenigkramer Easy open woven polypropylene bag
WO2016044812A1 (fr) * 2014-09-18 2016-03-24 Mark Steele Emballage à élément d'ouverture à l'épreuve des enfants
FR3094700B1 (fr) * 2019-04-02 2021-03-05 S2F Flexico Sachet comprenant un bec verseur amélioré
FR3095810B1 (fr) * 2019-05-10 2021-04-23 S2F Flexico Bande de fermeture rapportée sur un emballage du type sachet ou boîte
FR3095809B1 (fr) * 2019-05-10 2021-04-23 S2F Flexico Bande de fermeture rapportée sur un emballage du type sachet ou boîte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020100144A1 (en) * 2001-01-30 2002-08-01 Zdenek Machacek Reclosable zipper strip with coated webs
WO2008024157A2 (fr) * 2006-08-23 2008-02-28 Illinois Tool Works Inc. Ensemble fermeture à glissière très résistant à l'éclatement destiné à de grands emballages refermables
WO2008118574A1 (fr) * 2007-03-26 2008-10-02 Illinois Tool Works Inc. Fermeture à glissière et profil de verrouillage secondaire à charnières

Family Cites Families (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978769A (en) * 1958-07-07 1961-04-11 Talon Inc Plastic bag or container
US3172443A (en) * 1962-02-19 1965-03-09 Ausnit Steven Plastic fastener
US3226787A (en) * 1962-05-17 1966-01-04 Ausnit Steven Double extruded fastener strips
US3679511A (en) * 1970-02-18 1972-07-25 Steven Ausnit Flexible pilfer proof closure construction for bags
US4000768A (en) * 1974-04-16 1977-01-04 Minigrip, Inc. Handle package
ES490715A0 (es) * 1980-04-18 1981-02-16 Campos Herruzo Juan Sistema control de direccion de helicoptero coaxial, paso colectivo a la vez que tambien variable simultaneamente con signo contrario
US4534752A (en) * 1982-06-01 1985-08-13 Kcl Corporation Apparatus and method for securing top ends of sack gussets
AT386535B (de) * 1982-11-22 1988-09-12 Fischer Gmbh Leichtbaukern
US4619021A (en) * 1984-07-23 1986-10-28 Johnson James R Closure strip to be applied to bags
US4620320A (en) * 1984-12-20 1986-10-28 Kcl Corporation Substantially leakproof zipper closure for bags and method
US4637063A (en) * 1985-03-04 1987-01-13 Kcl Corporation Reclosable bag with sealed laminated liner and method
US4691373A (en) * 1985-08-05 1987-09-01 Minigrip, Incorporated Zipper closure with unitary adhesive cover sheet
US4812074A (en) * 1985-08-30 1989-03-14 Minigrip, Inc. Apparatus for making bag material
DE3538897A1 (de) * 1985-11-02 1987-05-07 Henkel Kgaa Klebstoffauftragsverfahren
CH666899A5 (de) * 1986-05-09 1988-08-31 Sika Ag Reaktiver schmelzklebstoff.
US4731911A (en) * 1986-08-08 1988-03-22 Minigrip, Inc. Extruded closure strip carrying reactivatable adhesive layer
US4835835A (en) * 1986-08-08 1989-06-06 Minigrip, Inc. Method and apparatus for making extruded separable fastener with reactivatable adhesive
US4912616A (en) * 1988-04-15 1990-03-27 Minigrip, Inc. Bag with infold along flange for differential opening force
US4947525A (en) * 1989-03-23 1990-08-14 Zip-Pak Incorporated Zipper closure with internal peel seal
US5185909A (en) * 1991-06-11 1993-02-16 Hiromichi Inagaki Zipper for closing the mouth of a bag
US5425825A (en) * 1993-04-22 1995-06-20 Rasko; George Reclosable zipper with tamper evident feature
US5470156A (en) * 1994-04-11 1995-11-28 Reynolds Consumer Products, Inc. Closure arrangement having a peelable seal
US5513915A (en) * 1994-04-11 1996-05-07 Reynolds Consumer Products Inc. Closure arrangement having a breakaway seal
US5791783A (en) * 1994-04-15 1998-08-11 Dowbrands L.P. Adhesive closure having enhanced burst strength for flexible bag
US5564834A (en) * 1994-04-15 1996-10-15 Dowbrands L.P. Adhesive closure having enhanced burst strength for flexible bag
US5709915A (en) * 1995-08-04 1998-01-20 Reynolds Consumer Products, Inc. Adhesive structure for heat sealing
US5749658A (en) * 1996-09-12 1998-05-12 Reynolds Consumer Products, Inc. Closure arrangement for attachment to outside of bag
US7254873B2 (en) * 1998-06-04 2007-08-14 Illinois Tool Works, Inc. Scored tamper evident fastener tape
US6327754B1 (en) * 1999-05-10 2001-12-11 Pactiv Corporation Fastener with slider thereon for use in manufacturing recloseable bags
US6138439A (en) * 1999-05-21 2000-10-31 Illinois Tool Works Inc. Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines
US20060120630A9 (en) * 1999-06-17 2006-06-08 Steven Ausnit Watertight slider-zipper assembly for reclosable packaging
US6327837B1 (en) * 1999-07-15 2001-12-11 Illinois Tool Works Inc. Slide-zipper assembly with peel seal and method of making packages with slide zipper assembly
US6183134B1 (en) * 2000-05-04 2001-02-06 Illinois Tool Works, Inc. High internal force resistant peel sealable zipper
US6354738B1 (en) * 2000-10-24 2002-03-12 Illinois Tool Works Inc. Tamper evident reclosable plastic bag
US20020094137A1 (en) * 2001-01-16 2002-07-18 Schneider John H. Tamper evident resealable packaging
AU2002248636A1 (en) * 2001-03-15 2002-10-03 Velcro Industries B.V. Reclosable bag with expansion gusset
DE10122437A1 (de) * 2001-05-09 2002-11-28 Henkel Kgaa Schmelzklebstoff in Form eines Granulates
US6901637B2 (en) * 2001-10-03 2005-06-07 Illinois Tool Works Inc. Zipper with pre-activated peel-seal
US6890982B2 (en) * 2002-06-11 2005-05-10 Marcus Oil And Chemical-Corp. Wax for hot melt adhesive applications
US6863646B2 (en) * 2002-06-19 2005-03-08 Kraft Foods Holdings, Inc. Reclosable system for flexible packages having interlocking fasteners
US6910805B2 (en) * 2002-09-30 2005-06-28 Illinois Tool Works Inc. Method for sealing zipper assembly to bag making film at three or more points
US6960021B2 (en) * 2002-10-02 2005-11-01 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly
US7090904B2 (en) * 2002-11-08 2006-08-15 Exopack, L.L.C. Enhanced slider zipper multiwall bag and associated methods
US6979482B2 (en) * 2002-11-08 2005-12-27 Exopack-Technology, Llc Multiwall bag with zipper and fin
US8122687B2 (en) * 2003-07-31 2012-02-28 Kraft Foods Global Brands Llc Method of making flexible packages having slide closures
DE602004016548D1 (de) * 2003-11-21 2008-10-23 Juichi Kasai T hoher luftdichtheit
US7415810B2 (en) * 2004-09-22 2008-08-26 Illinois Tool Works Inc. Methods of manufacturing hooded slider-operated zippered bags
US7311647B2 (en) * 2005-05-09 2007-12-25 Illinois Tool Works Inc. Methods for sensing features on moving fastener tape during automated production
KR20080027785A (ko) * 2005-06-01 2008-03-28 레이놀즈 컨슈머 프로덕츠 인코포레이티드. 밀폐부재의 내·외면에 실란트를 구비하는 재밀폐 가능한지퍼
US20070065051A1 (en) * 2005-09-21 2007-03-22 Eads Claude A Infestation resistant reclosable seal
US20090067761A1 (en) * 2006-08-23 2009-03-12 Illinois Tool Works Inc. High burst closure assembly for large packages
US7937908B2 (en) * 2007-08-17 2011-05-10 Illinois Tool Works Inc. Dual hot melt adhesive systems
US20090097783A1 (en) * 2007-10-10 2009-04-16 Illinois Tool Works Inc. High-burst, easy-opening slider zipper for reclosable packages or bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020100144A1 (en) * 2001-01-30 2002-08-01 Zdenek Machacek Reclosable zipper strip with coated webs
WO2008024157A2 (fr) * 2006-08-23 2008-02-28 Illinois Tool Works Inc. Ensemble fermeture à glissière très résistant à l'éclatement destiné à de grands emballages refermables
WO2008118574A1 (fr) * 2007-03-26 2008-10-02 Illinois Tool Works Inc. Fermeture à glissière et profil de verrouillage secondaire à charnières

Also Published As

Publication number Publication date
US20090257691A1 (en) 2009-10-15
US20090067761A1 (en) 2009-03-12

Similar Documents

Publication Publication Date Title
US8484934B2 (en) Method for manufacturing high burst zipper assemblies
US7673437B2 (en) Reclosable packages with front panel slider-zipper assembly
US20090257691A1 (en) High burst closure assembly for large packages
US6991372B2 (en) Reclosable packages with front panel slider-zipper assembly
US8597168B2 (en) Method of making bag with handle on side gusset
US20070104397A1 (en) Bag structures and methods of assembling the same
US20090263048A1 (en) Bag Structures And Methods Of Assembling The Same
MXPA06012943A (es) Empaque flexible con caracteristica de cierre interno capaz de volverse a sellar.
WO2008022308A2 (fr) Emballage apte à être scellé plusieurs fois avec une structure inviolable et procédé de fabrication de celui-ci
WO2009129375A2 (fr) Structures de sac et procédés d'assemblage de ceux-ci
EP1181205B1 (fr) Sac sur pied servant a contenir des produits coulants
WO2008134145A1 (fr) Fermeture à glissière avec éléments de rabat pour un emballage refermable
US20080240625A1 (en) Slider zipper with hinged secondary locking profile

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09793272

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09793272

Country of ref document: EP

Kind code of ref document: A1