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WO2002014153A1 - Sacs refermables pourvus d'une fermeture a glissiere inviolable et procedes de fabrication - Google Patents

Sacs refermables pourvus d'une fermeture a glissiere inviolable et procedes de fabrication Download PDF

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Publication number
WO2002014153A1
WO2002014153A1 PCT/US2001/023882 US0123882W WO0214153A1 WO 2002014153 A1 WO2002014153 A1 WO 2002014153A1 US 0123882 W US0123882 W US 0123882W WO 0214153 A1 WO0214153 A1 WO 0214153A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
further including
package
product
track
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.)
Ceased
Application number
PCT/US2001/023882
Other languages
English (en)
Inventor
Timothy W. Pistner
Toby R. Thomas
Nathan A. Kolovich
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.)
Pactiv LLC
Original Assignee
Pactiv LLC
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 Pactiv LLC filed Critical Pactiv LLC
Priority to AU2001279084A priority Critical patent/AU2001279084A1/en
Publication of WO2002014153A1 publication Critical patent/WO2002014153A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/08—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing
    • B65B9/093—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing the web having intermittent motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/06—Cutting webs along their longitudinal direction

Definitions

  • the present invention relates generally to the packaging industry. More particularly, the invention relates to a recloseable bag or package having a zipper or fastener with a tamper-evident feature and a method of manufacture of such a bag.
  • Plastic packages are popular for storing food products and other items. Recloseable packages that can be securely closed and reopened are particularly popular due to their ability to maintain freshness of the food stored in the package and/or to minimize leakage into and out of the package. Thus, recloseable packages are very common, especially in the food industry. Recloseable packages are typically made to be recloseable via the use of a recloseable feature such as a resealable adhesive seal or a recloseable zipper. Recloseable zippers can be opened and closed either by pressure or by the use of an auxiliary slider mechanism. These packages are used one at a time by consumers and large numbers of these packages are also used by businesses to package items that are then sold to consumers. An example of a business that uses a large number of these packages is a food producer and packer. For example, nuts, candy, snacks, salt, cheese, other food and non-food products can be packed in these packages by form, fill and seal machines and sold to consumers.
  • a recloseable feature such as a res
  • the additional closure feature have a tamper-evident feature associated with it. That is, the additional closure is so constructed, that once slit, cut or otherwise opened, it is immediately evident to the user that this closure has been opened completely or partially, such as by being completely or partially cut, punctured, or the like. Stated another way, this additional closure is not a refastenable or recloseable in the same fashion as the recloseable zipper fastener feature.
  • a need therefore exists for an efficient method and apparatus for providing products within a recloseable package. Additionally, a need exists for a recloseable bag having a fastener and a tamper evident feature that can easily and efficiently be manufactured.
  • a fastener arrangement for use in manufacturing recloseable bags.
  • the fastener arrangement comprises a first fastener releasably engageable to a second fastener.
  • Each of the fasteners comprises a zipper having a male track with a male profile and a female track with a female profile.
  • the male and female profiles are releasably engageable to each other.
  • the male track and female track are mounted to either side of a web of material which includes a tamper-evident feature. This web of material may be secured at either side of the fastener profiles, to first and second wall panels of a bag or package.
  • a slider is slidably mounted to the zipper for movement between a closed position and an open position.
  • the male and female profiles are engaged to each other while the slider is in the closed position.
  • the male and female profiles are disengaged from each other in response to movement of the slider from the closed position to the open position.
  • the zipper may have a length approximately equal to a length (or width) of the recloseable package.
  • a zipper arrangement for use in manufacturing recloseable bags.
  • the zipper arrangement comprises a male track with a male profile and a female track with a female profile.
  • the male and female profiles are releasably engageable to each other.
  • the male track and female track are mounted to either end of a web of material which includes a tamper-evident feature. This web of material may be secured at either side of the fastener profiles, to first and second wall panels of a bag or package. Opposite free ends of the wall panels may then be joined, and thereafter, cross-seamed to define individual packages or bags.
  • the individual packages or bags may be filled with product.
  • a web from which the walls of the package or bag are formed may be initially fed off a film roll from an unwind operation. Thereupon, the web is slit to form two coplanar or side-by-side continuous webs. At this point, a zipper having engaged male and female profiles and a tamper evident feature is secured to adjacent surfaces of the side-by-side web portions.
  • the bag web panels may be folded as in a horizontal form fill seal operation, or alternatively, wrapped around a tube as in a vertical form fill seal operation, or even used to over-wrap product.
  • the manner in which the web is initially slit and the zipper is secured to the respective split web portions closely following the unwind process permits this process to be used in any of a variety of form, fill and seal or overwrap operations.
  • the unwind process and mechanism is common to all of these forms of form, fill and seal or over- wrap operations.
  • the webs which form the bag panel may be separately fed, rather than slitting a single web.
  • a method of manufacturing recloseable packages there is provided a method of manufacturing recloseable packages.
  • the method comprises providing a first wall panel and a second wall panel, positioning a zipper comprising releasably engageable zipper profiles on a zipper web between the first and second wall panels, adhering a surface of the zipper web on one side of the zipper profiles to the first wall panel, and adhering a surface of the zipper web on the other side of said zipper profiles to the second wall panel.
  • the method may further include joining opposite free ends of the first and second wall panels, forming a first and a second side seal in the wall panels to define a first and a second side edge of the package, and cutting the side seals to separate adjacent packages.
  • the method may further include feeding a zipper arrangement between the wall panels before positioning the zipper.
  • the zipper may alternatively comprise a continuous male track and a continuous female track with a plurality of sliders.
  • FIG. 1 is a cross-sectional view of a fastener or track having a web or fins
  • FIG. 2 is a cross-sectional view similar to FIG. 1 showing a fastener or track with split fins;
  • FIG. 3 is a perspective view of the fastener or track of FIG. 1 preparatory to being applied to a slit web;
  • FIG. 4 is a perspective view showing an unroll and slit operation and the assembly of the fastener or track with the split web;
  • FIG. 5 is an enlarged cross-sectional view showing the track or fastener being applied to the split web;
  • FIG. 6 is a cross-sectional view showing web panels folded downwardly, subsequent to the process shown in FIGS. 4 and 5;
  • FIG. 7 is a partial perspective view showing an assembled fastener and wall panels, additionally using a slider;
  • FIG. 8 is a simplified view of a form, fill and seal process using the fastener and bag formed by the process of FIGS. 4 and 5;
  • FIG. 9 is a simplified view of a vertical form, fill and seal process using the invention.
  • FIGS. 10-12 show further embodiments of a fastener or track having a web or fin.
  • FIGS. 1-3 illustrate a fastener or zipper arrangement or "track” 14 for recloseable bag or package.
  • the track 14 includes a male track 24 having a male profile 26 and a first fin or web portion 28 extending from the male profile 26, and a female track 30 having a female profile 32 and a second fin or web portion 34 extending from the female profile 32.
  • the male and female profiles 26 and 32 are releasably engageable with each other to provide a recloseable seal for a bag or package.
  • FIGS. 1 illustrate a fastener or zipper arrangement or "track” 14 for recloseable bag or package.
  • the lower edges of the first and second fin or web portions 28 and 34 are joined to each other along a one-time breakable preferential area of weakness or preferential tear area 38 to for a one-time openable tamper evident feature.
  • the tamper evident feature is described in detail in Serial No.
  • FIGS. 4 and 5 a novel part of the method or process of forming a bag in accordance with the invention as illustrated.
  • the web material from which the bag or package is to be formed is indicated generally by reference numeral 42.
  • the web or film 42 is unrolled or removed from a roll 40.
  • a knife, razor blade or other suitable slitting tool 44 is used to slit the web 42 into two side-by- side coplanar web portions 16, 18 which will ultimately form the opposing wall panels of a package or bag body.
  • Two side-by-side rolls 40 dispensing separate webs 16, 18 might also be used; however, synchronizing means might be required for this option.
  • the web or film 42 and hence these wall panels 16 and 18 may comprise polymeric film, multi- layer and multi-component laminations or co-extrusions.
  • the fastener or track 14 is fed or otherwise positioned intermediate the web portions 16 and 18, as also shown in FIG. 5.
  • the fins or web portions 28 and 34 of the track may be adhered to surfaces at respective opposite inwardly facing edges of the respective web portions or wall panels 16 and 18.
  • the sealing or adhering of the fins to the web portions 16 and 18 may be by heat seal, adhesive or any other appropriate method to form a strong seal.
  • the fins 28 and 34 are pressed or otherwise deformed into a partially flattened condition, to permit the sealing or adhering of an outer surface thereof to the coplanar side-by-side and somewhat spaced apart web portions 16 and 18.
  • the fins may be completely spread in a generally parallel configuration to the web portion 16 and 18 to facilitate sealing. In this instance, the fins may be somewhat shorter than illustrated in FIG. 2, having sufficient length to permit adequate adhering or sealing to opposed facing edge portions of the web portions 16 and 18.
  • the bag may be further processed such as by folding the webs or wall panels 16, 18 into the configuration shown in FIG. 6.
  • the panels 16, 18 and track 14 may be further formed in a variety of ways, either by folding as shown in FIG. 6 for use in a horizontal fill operation or by wrapping about a fill tube (FIG. 9) for use in a vertical fill operation, or in an overwrap application, being applied or overwrapped about a food product or other product (not shown).
  • the track 14 may include recloseable interlocking profiles 32 and 26 for manual engagement and disengagement, or, referring to FIG. 7, may additionally include a slider 12 for opening and closing the profiles.
  • a slider 12 for opening and closing the profiles.
  • the recloseable package 20 has a slider 12 slidably mounted to the fastener 14 for movement between a closed position and an open position.
  • the male and female profiles 26 and 32 are engaged to each other while the slider 12 is in the closed position, and movement of the slider 12 from the closed position to the open position disengages the profiles 26 and 32 from each other.
  • FIG. 7 depicts the open position to the left of the slider 12 and the closed position to the right of the slider 12.
  • FIG. 8 illustrates one embodiment of a (horizontal) fill and seal process for providing a product within a recloseable package having the fastener 14 with slider 12, formed as described above.
  • the process of providing the packaging material having the fastener 14 attached is as shown in FIGS. 4 and 5, and sides are folded down as shown in FIG. 6.
  • This forms a package body 20 and defines a receptacle space 22 bounded by the opposing wall panels 16 and 18 (see FIG. 6) and the closed fastener or zipper 14.
  • the fastener 14 (shown with optional slider 12 in FIG. 8) is in the closed position when fed to the fill and seal apparatus of FIG. 8.
  • a vertical seal bar 58 joins the wall panels 16 and 18 together to form a side seal
  • the side seal 60 that defines a side edge 62 of the recloseable package.
  • the distance between adjacent side seals 60 should be approximately equal to the desired width W of the recloseable package.
  • the side seal 60 may be formed by heat seal, adhesive or any other appropriate method to form a strong preferably hermetic seal.
  • the side seal 60 is formed at an optional notch 63 in the zipper arrangement 14 which allows easier side sealing since the vertical seal bar 58 does not have to flatten or crush the profiles 26 and 32 of the fastener 14 in order to side seal the web 16, 18.
  • a product 64 fills the receptacle space 22 of the package.
  • FIG. 8 shows a funnel 66 directing the product 64, into the package.
  • the product 64 may be nuts, candy, snacks, salt, cheese and/or other food and non-food products.
  • a top seal bar 68 adheres the wall panel 16 to the other wall panel 18, hermetically sealing the product 64 within the package.
  • the top seal bar 68 moves back and forth to provide a seal 70 that adheres the wall panel 16 to the wall panel 18.
  • the wall panels 16 and 18 maybe sealed by heat seal, adhesive or any other appropriate method to form a strong hermetic seal 70.
  • a knife 72 cuts the side seal 60 such that the side edges 62 of each package remain secure.
  • An end termination or stop may be added to the ends of the fastener
  • end terminations also hold the male and female profiles together to resist stresses applied to the profiles during normal use of the plastic bag.
  • One type of end termination is in the form of a strap/clip that wraps over a top of a zipper. Further information concerning such an end termination may be found in U.S. Patent No. 5,067,208, which is incorporated herein by reference in its entirety.
  • One end of the strap is provided with a rivet-like member that penetrates through the zipper fins and into a cooperating opening at the other end of the strap.
  • Other types of end termination are disclosed in U.S. Patent Nos. 5,482,375, 5,448,807, 5,442,837, 5,405,478, 5,161,286, 5,131,121 and 5,088,971, which are each incorporated herein by reference in their entireties.
  • the form, fill and seal process may vary from the illustration of FIG. 8 and the following describes some of the possible variations.
  • the side seal 60 may be cut before filling the package with the product 64.
  • the process forms and cuts the side seals 60.
  • the product 64 fills the package and the seal 70 closes the package.
  • the bag panels or web portions 16, 18 and track or fastener 18 joined as shown in FIGS. 4 and 5 may be used in connection with other form, fill and seal operations or processes, including a vertical form, fill and seal operation or an overwrap operation.
  • the horizontal process shown in FIG. 8 gives but one example of a fill process which may be utilized in connection with the invention.
  • FIG. 9 a vertical form fill and seal (VFFS) operation is illustrated somewhat diagrammatically.
  • the form fill seal operation in FIG. 8 may be what is often referred to as a horizontal form fill seal (HFFS) operation.
  • HFFS horizontal form fill seal
  • similar reference numerals with the prefix 1 have been used to designate parts and components which are similar to those designated in the previous figures of drawings.
  • the web 42 is supplied on a roll 140 in an unwind process, similar to the above description, separate side-by-side rolls 140 might also be used.
  • a fastener or zipper strip or track 114 is supplied in generally the same form as illustrated above for attachment to the two web portions 116 and 118.
  • the zipper strip may be supplied from a reel 115.
  • An attachment tool 117 may be used to attached the strip 114 to the web in the same fashion as illustrated above in FIGS. 3, 5 and 6, for example.
  • the slider 112 may next be attached to the fastener strip 114.
  • VFFS vertical form fill and seal
  • the funnel 166 and tube 82 may be a single piece.
  • a bottom seal (with respect to the orientation of the finished product, wherein the zipper strip is at the top) is formed by a suitable sealing tool 168, and transverse side seals are formed by sealing tools 158.
  • the product may be filled following the formation of the first side seal, and then, as the web advances, the second side seal may be formed, and thereafter, the web may be cut adjacent the second side seal as by cutting tools 172 to separate the filled package from the web. Referring to FIGS.
  • FIG. 12 differs from that shown for example in FIG. 1 in that the tamper evident feature is formed on the inner side of the web.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un sac refermable et un procédé de fabrication de sacs refermables, consistant à utiliser une glissière ou dispositif (14) de fermeture pourvu d'une section mâle avec un profil mâle, d'une section femelle avec un profil femelle et de nervures (28,34) s'étendant de ces profils. Les profils mâle et femelle peuvent s'imbriquer l'un dans l'autre de manière amovible. Une bande de matériau formant le sac est avancée puis divisée de manière à former des parties de bande coplanaires adjacentes (16 et 18). Chacune des nervures est fixée à une des surfaces avant des bords avant des parties de bande adjacentes de façon à rattacher la glissière avec ses profils pouvant s'imbriquer de manière amovible entre les deux parties de bande. Les nervures peuvent venir en contact l'une avec l'autre le long d'un bord opposé aux profils, et être entaillées pour définir une caractéristique d'inviolabilité.
PCT/US2001/023882 2000-08-16 2001-07-30 Sacs refermables pourvus d'une fermeture a glissiere inviolable et procedes de fabrication Ceased WO2002014153A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001279084A AU2001279084A1 (en) 2000-08-16 2001-07-30 Recloseable bags with tamper-evident zipper and methods of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64024300A 2000-08-16 2000-08-16
US09/640,243 2000-08-16

Publications (1)

Publication Number Publication Date
WO2002014153A1 true WO2002014153A1 (fr) 2002-02-21

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ID=24567428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023882 Ceased WO2002014153A1 (fr) 2000-08-16 2001-07-30 Sacs refermables pourvus d'une fermeture a glissiere inviolable et procedes de fabrication

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WO (1) WO2002014153A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884738A (en) * 1974-04-08 1975-05-20 Sr David V Hofius Method and apparatus for fastening slide fasteners to an article
US3948705A (en) * 1972-07-25 1976-04-06 Steven Ausnit Method for making multiple plastic bags with reclosable fasteners thereon
US4241865A (en) * 1979-08-06 1980-12-30 Kcl Corporation Reclosable shipping sack and method
US4812074A (en) * 1985-08-30 1989-03-14 Minigrip, Inc. Apparatus for making bag material
US4949527A (en) * 1988-06-29 1990-08-21 Zip-Pak Incorporated Method of forming a reclosable tray
US5036643A (en) * 1990-05-09 1991-08-06 Package Machinery Company, Bodolay/Pratt Division Form, fill, seal and separate packaging machine for reclosable containers including means for applying zipper to web
US5072571A (en) * 1990-02-26 1991-12-17 Zip-Pak Incorporated Zippered film plural sheet strip guide system and method for zippered film for form, fill and seal package making machines
US5519982A (en) * 1991-05-31 1996-05-28 Kraft Foods, Inc. Pouch having easy opening and reclosing characteristics and method and apparatus for production thereof
US5826401A (en) * 1996-02-27 1998-10-27 Flexico-France Machine and a method for automatically forming, filling, and closing bags
US5876531A (en) * 1996-03-06 1999-03-02 Kimberly-Clark Worldwide, Inc. Process for making a mechanical fastener having a grip tab

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948705A (en) * 1972-07-25 1976-04-06 Steven Ausnit Method for making multiple plastic bags with reclosable fasteners thereon
US3884738A (en) * 1974-04-08 1975-05-20 Sr David V Hofius Method and apparatus for fastening slide fasteners to an article
US4241865A (en) * 1979-08-06 1980-12-30 Kcl Corporation Reclosable shipping sack and method
US4812074A (en) * 1985-08-30 1989-03-14 Minigrip, Inc. Apparatus for making bag material
US4949527A (en) * 1988-06-29 1990-08-21 Zip-Pak Incorporated Method of forming a reclosable tray
US5072571A (en) * 1990-02-26 1991-12-17 Zip-Pak Incorporated Zippered film plural sheet strip guide system and method for zippered film for form, fill and seal package making machines
US5036643A (en) * 1990-05-09 1991-08-06 Package Machinery Company, Bodolay/Pratt Division Form, fill, seal and separate packaging machine for reclosable containers including means for applying zipper to web
US5519982A (en) * 1991-05-31 1996-05-28 Kraft Foods, Inc. Pouch having easy opening and reclosing characteristics and method and apparatus for production thereof
US5826401A (en) * 1996-02-27 1998-10-27 Flexico-France Machine and a method for automatically forming, filling, and closing bags
US5876531A (en) * 1996-03-06 1999-03-02 Kimberly-Clark Worldwide, Inc. Process for making a mechanical fastener having a grip tab

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