CA2654568A1 - High burst zipper assembly for large reclosable packages - Google Patents

High burst zipper assembly for large reclosable packages Download PDF

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Publication number
CA2654568A1
CA2654568A1 CA002654568A CA2654568A CA2654568A1 CA 2654568 A1 CA2654568 A1 CA 2654568A1 CA 002654568 A CA002654568 A CA 002654568A CA 2654568 A CA2654568 A CA 2654568A CA 2654568 A1 CA2654568 A1 CA 2654568A1
Authority
CA
Canada
Prior art keywords
flange
reclosable
zipper
packages
zipper assembly
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.)
Granted
Application number
CA002654568A
Other languages
French (fr)
Other versions
CA2654568C (en
Inventor
Rusty Koenigkramer
David J. Anzini
Steven Ausnit
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.)
Illinois Tool Works Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2654568A1 publication Critical patent/CA2654568A1/en
Application granted granted Critical
Publication of CA2654568C publication Critical patent/CA2654568C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B65D33/2584—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 characterized by the slider
    • 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
    • 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
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/927—Reclosable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/15—Bag fasteners
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
    • Y10T24/2534—Opposed interlocking surface having dissimilar cross section

Abstract

The present disclosure relates to a high burst slider zipper (10) which allows for bottom filling of reclosable packages (100), such as large bags, and further provides increased resistance to damage from the dropping or shock loading of the filled package. This is achieved by providing a peel seal (24) or other frangible or separable connection between the zipper profiles, and by sealing a portion of one of the flanges to itself by a hard seal (30) above the peel seal. This causes the external forces on a bag from bottom filling or shock loading to be directed toward the hard seal and further directed so as to cause a shear force against the peel seal, thereby increasing the resistance of the package to external forces.

Claims (77)

1. A zipper assembly for a reclosable package, including:
a first profile with a first flange and a first interlocking element;
a second profile with a second flange and a second interlocking element;
the first flange including a first portion extending from the first interlocking element, a second portion, a third portion, a first fold formed between the first and second portions, and a second fold formed between the second and third portions;
a separable connection formed between the first portion and a central area of the second flange, wherein the separable connection is more resistant to a shear force than to a peeling force; and a seal formed between the second portion and an area of the first portion between the frangible connection and the first interlocking element.
2. The zipper assembly of Claim 1 wherein a load on the first and second flanges applies a shear force to the separable connection.
3. The zipper assembly of Claim 2 wherein the separable connection is a peel seal.
4. The zipper assembly of Claim 2 wherein the seal is a hard seal formed proximate to the second fold.
5. The zipper of Claim 4 wherein the first fold is formed proximate to the peel seal.
6. The zipper of Claim 5 wherein the peel seal is in a position intermediate the first fold and the interlocking profiles.
7. The zipper assembly of Claim 3 further including a slider mounted on the first and second profiles, whereby movement of the slider in an opening direction separates the first and second interlocking elements from each other and movement of the slider in a closing direction interlocks the first and second interlocking elements together.
8. The zipper assembly of Claim 1 wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection.
9. The zipper assembly of Claim 1 wherein at least one of the first and second profiles includes reinforcing ribs.
10. A zipper assembly for a reclosable package, including:
a first profile with a first flange and a first interlocking element;
a second profile with a second flange and a second interlocking element;
the first flange including a first portion extending from the first interlocking element and a second portion extending from a substantially central location of the first portion; and a separable connection formed between the first portion and a central area of the second flange, wherein the separable connection is more resistant to a shear force than to a peeling force.
11. The zipper assembly of Claim 10 wherein a load on the first and second flanges applies a shear force to the separable connection.
12. The zipper assembly of Claim 11 wherein the separable connection is a peel seal.
13. The zipper assembly of Claim 12 wherein the second portion is sealed to the first portion by a hard seal.
14. The zipper of Claim 13 wherein a first end of the first portion joins the first interlocking element and the second end is formed proximate to the peel seal.
15. The zipper of Claim 13 wherein the hard seal is at a location on the first portion between the peel seal and the first interlocking element.
16. The zipper assembly of Claim 12 further including a slider mounted on the first and second profiles, whereby movement of the slider in an opening direction separates the first and second interlocking elements from each other and movement of the slider in a closing direction interlocks the first and second interlocking elements together.
17. The zipper assembly of Claim 10 wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection.
18. The zipper assembly of Claim 10 further including a removable header enclosing the first and second interlocking elements.
19. A zipper assembly for a reclosable package, including:
a first profile with a first flange and a first interlocking element;
a second profile with a second flange and a second interlocking element, the second flange including a proximal segment and a distal segment, a first end of the proximal segment being attached to the second interlocking element, and a second end of the proximal segment being attached to the distal segment, with a fold formed at a joinder of the proximal segment and the distal segment;
a separable connection formed between faces of the distal segment and the proximal segment, wherein the separable connection is more resistant to a shear force than to a peeling force;
a first extension segment joined to the first flange at a position between the separable connection and the first interlocking element and further joined to the first flange at a position proximate to the peel seal; and a second extension segment joined to the second flange at a position between the separable connection and the second interlocking element.
20. The zipper assembly of Claim 19 wherein a load on the first and second flanges applies a shear force to the separable connection.
21. The zipper assembly of Claim 20 wherein the separable connection is a peel seal.
22. The zipper of assembly of Claim 21 wherein a perforated or scored line is formed in the fold.
23. The zipper assembly of Claim 21 wherein the first and second extension segments provide an area for attachment to respective first and second package walls.
24. The zipper assembly of Claim 21 wherein the second extension segment includes a second fold between a first portion and a second portion, wherein the first portion is joined to the second flange at a position between the peel seal and the second interlocking element, and the second portion descends past the second flange.
25. The zipper assembly of Claim 24 wherein the first extension segment is additionally sealed to the first flange at a position proximate to the peel seal.
26. The zipper assembly of Claim 24 wherein the first and second extension segments provide an area for attachment to respective first and second package walls.
27. The zipper assembly of Claim 21 further including a slider mounted on the first and second profiles, whereby movement of the slider in an opening direction separates the first and second interlocking elements from each other and movement of the slider in a closing direction interlocks the first and second interlocking elements together.
28. The zipper assembly of Claim 19 wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection.
29. A method of manufacturing reclosable packages, comprising the steps of:
providing a length of zipper material, the zipper material including a first profile and a second profile, wherein the first profile includes a first interlocking element and a first flange, the second profile includes a second interlocking element and a second flange, the first flange including a first segment extending from the first interlocking element and a second segment extending from a substantially central location of the first segment, the zipper material further including a separable connection formed between the first segment and a central area of the second flange, wherein the separable connection is more resistant to a shear force than to a peeling force;
spreading at least a portion of the first flange from at least a portion of the second flange;
applying adhesive to the portion of the first flange and the portion of the second flange;
providing a first wall and a second wall of a reclosable package; and securing the portion of the first flange to the first wall and the portion of the second flange to the second wall.
30. The method of manufacturing reclosable packages of Claim 29 wherein the step of providing a length of zipper material includes the step of providing a spool of the length of zipper material.
31. The method of manufacturing reclosable packages of Claim 29 wherein the first segment is sealed to the second segment.
32. The method of manufacturing reclosable packages of Claim 30 wherein the step of applying adhesive applies the adhesive to an interior of the first flange and the second flange and wherein the step of securing includes securing the interior of the first flange and the second flange to the exterior of the first wall and the second wall, respectively.
33. The method of manufacturing reclosable packages of Claim 32 wherein the step of securing includes temporarily applying pressure to the first flange and the second flange to the first wall and the second wall, respectively.
34. The method of manufacturing reclosable packages of Claim 33 further including the step of placing a slider on the zipper material.
35. The method of manufacturing reclosable packages of Claim 34 further including the step of forming stomps on the length of zipper material proximate to ends of the reclosable packages.
36. The method of manufacturing reclosable packages of Claim 35 further including the step of sealing ends of the first flange to ends of the second flange at least laterally outward from edges of the first and second walls.
37. The method of manufacturing reclosable packages of Claim 35 further including the step of gluing ends of the first flange to ends of the second flange laterally outward from edges of the first and second walls.
38. The method of manufacturing reclosable packages of Claim 35 further including the step of separating. adjacent packages by cutting the length of zipper material at locations of the stomps.
39. A method of manufacturing a series of reclosable packages, comprising the steps of:

providing a continuous length of zipper material, the zipper material including a first profile and a second profile, wherein the first profile includes a first interlocking element and a first flange, the second profile includes a second interlocking element and a second flange, the first flange including a first segment extending from the first interlocking element and a second segment extending from a substantially central location of the first segment, the zipper material further including a separable connection formed between the first segment and a central area of the second flange, wherein the separable connection is more resistant to a shear force than to a peeling force;
providing a plurality of packages with a first wall and a second wall, wherein side edges of the first wall are secured to side edges of the second wall thereby forming with an open top and an open bottom;
for each of the plurality of packages, securing an interior portion of the first flange proximate to the top exterior of the first wall and the first interior portion of the second flange proximate to the top exterior of the second wall.
40. The method of manufacturing a series of reclosable packages of Claim 39 wherein the step of providing a continuous length of zipper material includes the step of providing a spool of the continuous length of zipper material.
41. The method of manufacturing reclosable packages of Claim 39 wherein the first segment is sealed to the second segment.
42. The method of manufacturing a series reclosable packages of Claim 41 wherein the step of securing is preceded by a step of applying adhesive the interior of the first flange and the second flange.
43. The method of manufacturing a series reclosable packages of Claim 42 wherein the step of securing includes temporarily applying pressure to the first flange and the second flange to the first wall and the second wall, respectively, of the plurality of packages.
44. The method of manufacturing a series of reclosable packages of Claim 43 further including the step of placing a slider on the zipper material for each of the plurality of packages.
45. The method of manufacturing a series of reclosable packages of Claim 44 further including the step of forming stomps on the length of zipper material proximate to ends of the each of the plurality of packages.
46. The method of manufacturing a series of reclosable packages of Claim 45 further including the step of sealing ends of the first flange to ends of the second flange at least laterally outward from edges of the first and second walls of each of the plurality of packages.
47. The method of manufacturing a series of reclosable packages of Claim 45 further including the step of gluing ends of the first flange to ends of the second flange laterally outward from edges of the first and second walls of each of the plurality of packages.
48. The method of manufacturing a series of reclosable packages of Claim 45 further including the step of separating adjacent packages by cutting the length of zipper material at locations of the stomps of each of the plurality of packages.
49. A method for manufacturing reclosable packages, comprising the steps of:
providing a zipper assembly, the zipper assembly including interlocking element and a separable connection, wherein a load on the zipper assembly causes a shear force on the separable connection;
providing material for walls of the reclosable packages;
applying a hot melt adhesive to the zipper assembly or the walls of the reclosable package; and bringing the zipper assembly and the walls of the reclosable package together whereby the hot melt adhesive forms a bond therebetween.
50. The method for manufacturing reclosable packages of Claim 49 wherein the applying step is performed by a nozzle.
51. The method of manufacturing reclosable packages of Claim 50 wherein the nozzle applies the hot melt adhesive in a downward direction.
52. The method of Claim 49 further including the step of temporarily applying pressure the zipper assembly to the walls of the reclosable package.
53. The method of Claim 49 wherein the step of applying a hot melt adhesive is performed by a station which is parallel to the step of bringing the zipper assembly and the walls of the reclosable package together.
54. The method of Claim 49 wherein the step of applying a hot melt adhesive performed by a station which is divergent with the step of bring the zipper assembly and the walls of the reclosable package together.
55. The method of Claim 49 further including the steps of filling the package with contents through a bottom of the package and sealing the bottom of the package.
56. The method of Claim 49 further including the step of filling the package with contents through the top of the package.
57. The method of Claim 49 further including the step of forming gussets between the walls of the package.
58. The method of Claim 49 further including the step of modifying the surface energy of at least a portion of the zipper assembly and the walls of the reclosable packages.
59. The method of Claim 49 wherein the material for walls of the reclosable package is a multi-wall paper laminate.
60. The method of Claim 49 wherein the material for walls of the reclosable package is a woven polypropylene.
61. The method of Claim 49 wherein the material for walls of the reclosable package is a laminate construction.
62. A method for manufacturing reclosable packages, comprising the steps of:
providing a zipper assembly;
providing material for walls of the reclosable packages;
applying a hot melt reactive adhesive to the zipper assembly or the walls of the reclosable package; and bringing the zipper assembly and the walls of the reclosable package together whereby the hot melt reactive adhesive forms a bond therebetween.
63. The method for manufacturing reclosable packages of Claim 62 wherein the applying step is performed by a nozzle.
64. The method of manufacturing reclosable packages of Claim 63 wherein the nozzle applies the hot melt reactive adhesive in a downward direction.
65. The method of Claim 62 further including the step of temporarily applying pressure the zipper assembly to the walls of the reclosable package.
66. A method for manufacturing reclosable packages, comprising the steps of:
providing a zipper assembly;
providing material for walls of the reclosable packages;
applying a hot melt cross-linkable reactive adhesive to the zipper assembly or the walls of the reclosable package; and bringing the zipper assembly and the walls of the reclosable package together whereby the hot melt cross-linkable reactive adhesive forms a bond therebetween.
67. The method for manufacturing reclosable packages of Claim 66 wherein the applying step is performed by a nozzle.
68. The method of manufacturing reclosable packages of Claim 67 wherein the nozzle applies the hot melt cross-linkable reactive adhesive in a downward direction.
69. The method of Claim 66 further including the step of temporarily applying pressure the zipper assembly to the walls of the reclosable package.
70. A method for manufacturing reclosable packages, comprising the steps of providing a zipper assembly;
providing material for walls of the reclosable packages;
applying a hot melt cross-linkable polyurethane reactive adhesive to the zipper assembly or the walls of the reclosable package; and bringing the zipper assembly and the walls of the reclosable package together whereby the hot melt cross-linkable polyurethane reactive adhesive forms a bond therebetween.
71. The method for manufacturing reclosable packages of Claim 70 wherein the applying step is performed by a nozzle.
72. The method of manufacturing reclosable packages of Claim 71 wherein the nozzle applies the hot melt cross-linkable polyurethane reactive adhesive in a downward direction.
73. The method of Claim 70 further including the step of temporarily applying pressure the zipper assembly to the walls of the reclosable package.
74. A method for manufacturing reclosable packages suitable for packaging a rated load, comprising the steps of:
providing a zipper assembly;
providing material for walls of the reclosable packages;
providing an adhesive chosen to maintain adhesion between the walls of the reclosable package and the zipper assembly for at least 72 hours at 140 degrees Fahrenheit, with at least 2.5 times the rated load applied to the zipper assembly;
applying the adhesive to the zipper assembly or the walls of the reclosable package;
bringing the zipper assembly and the walls of the reclosable package together whereby the adhesive forms a bond therebetween.
75. The method for manufacturing reclosable packages of Claim 74 wherein the applying step is performed by a nozzle.
76. The method of manufacturing reclosable packages of Claim 75 wherein the nozzle applies the adhesive in a downward direction.
77. The method of Claim 74 further including the step of temporarily applying pressure the zipper assembly to the walls of the reclosable package.
CA2654568A 2006-08-23 2007-07-12 High burst zipper assembly for large reclosable packages Active CA2654568C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US83944706P 2006-08-23 2006-08-23
US60/839,447 2006-08-23
PCT/US2007/015824 WO2008024157A2 (en) 2006-08-23 2007-07-12 High burst zipper assembly for large reclosable packages

Publications (2)

Publication Number Publication Date
CA2654568A1 true CA2654568A1 (en) 2008-02-28
CA2654568C CA2654568C (en) 2012-02-21

Family

ID=39107264

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2654568A Active CA2654568C (en) 2006-08-23 2007-07-12 High burst zipper assembly for large reclosable packages

Country Status (7)

Country Link
US (7) US7621105B2 (en)
EP (1) EP2054311B1 (en)
CN (1) CN101484363B (en)
AU (1) AU2007288457B2 (en)
BR (1) BRPI0714952A2 (en)
CA (1) CA2654568C (en)
WO (1) WO2008024157A2 (en)

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US9254620B2 (en) 2016-02-09
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US20080050056A1 (en) 2008-02-28
US20090255216A1 (en) 2009-10-15
US7963007B2 (en) 2011-06-21
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US20090263051A1 (en) 2009-10-22
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US8677722B2 (en) 2014-03-25
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US20090258772A1 (en) 2009-10-15
US20100069211A1 (en) 2010-03-18
US20080050052A1 (en) 2008-02-28
US20080047228A1 (en) 2008-02-28
US8484934B2 (en) 2013-07-16
US7621105B2 (en) 2009-11-24
AU2007288457A1 (en) 2008-02-28
US7882684B2 (en) 2011-02-08
CA2654568C (en) 2012-02-21
US8117804B2 (en) 2012-02-21
WO2008024157A3 (en) 2008-10-30

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