EP0528721A2 - Sachets en matière plastique refermables et méthode de fabrication de ceux-ci utilisant une fermeture à glissière discontinue - Google Patents

Sachets en matière plastique refermables et méthode de fabrication de ceux-ci utilisant une fermeture à glissière discontinue Download PDF

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Publication number
EP0528721A2
EP0528721A2 EP92402252A EP92402252A EP0528721A2 EP 0528721 A2 EP0528721 A2 EP 0528721A2 EP 92402252 A EP92402252 A EP 92402252A EP 92402252 A EP92402252 A EP 92402252A EP 0528721 A2 EP0528721 A2 EP 0528721A2
Authority
EP
European Patent Office
Prior art keywords
zipper
package
accordance
carrier tape
tube
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
EP92402252A
Other languages
German (de)
English (en)
Other versions
EP0528721A3 (en
Inventor
Paul Tilman
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.)
Minigrip Inc
Original Assignee
Minigrip 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 Minigrip Inc filed Critical Minigrip Inc
Publication of EP0528721A2 publication Critical patent/EP0528721A2/fr
Publication of EP0528721A3 publication Critical patent/EP0528721A3/en
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2525—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener located between the fastener and the product compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • 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
    • B65D33/2575—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer
    • B65D33/2583—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer the slide fastener being attached to one wall only
    • 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 improvements in reclosable plastic bags and a method of making the same and more particularly to a method which permits such bags to be formed in situ at a filling machine whereby the bags may be made and simultaneously filled with product.
  • a film or sheet of plastic material is brought to a filling spout and wrapped into a tube about the filling spout.
  • a zipper strip may be preapplied to the film or applied to the film at the filling machine whereafter a first, downstream cross seam is made in the tube, the tube is filled and the filled section flattened and a second, upstream cross seam is formed thereby completing the package and severing the completed package from the remainder of the tube.
  • the upstream cross seam simultaneously forms the downstream cross seam for the next package and the process is then repeated.
  • a further object is to provide an improved method of forming reclosable plastic packages in which the seals are substantially uniform over their entire length.
  • a still further object is to provide such a method which can readily be practiced on conventional form, fill and seal equipment with little or no modification to the equipment.
  • Yet another object is to provide a package having a reclosable zipper which may be discontinuous.
  • a zipper assembly extends down the bag from top to bottom or side to side. That is, the zipper may be applied either in the machine direction or cross seam direction.
  • the zipper assembly comprises a pair of coextensive, elongated plastic zipper strips permanently bonded to a carrier tape. Each of the zipper strips has a profile complementary to and adapted to interlock with the profile of the other zipper strip.
  • the carrier tape extends beyond the zipper strips in both the longitudinal and transverse directions so as to define a border surrounding the zipper strips.
  • the zipper assembly is mounted to a side wall of the bag body with only the end sections of the border extending to the edges of the bag body so that any side seal passes only through the border and not the zipper strip.
  • a method for forming such packages in situ at a form, fill and seal machine by continuously feeding a film of plastic material and forming it into a tube about a filling spout of the machine.
  • a zipper assembly having first and second interlocking members on zipper strips discretely spaced along a carrier tape is fed parallel to the tube and attached to the film.
  • a down stream cross seam is formed in the tube through the carrier tape between adjacent discrete sections of zipper, the tube is filled and the upstream cross seam is formed through the carrier tape between the next sections of zipper which also forms the downstream cross seam for the next package and the operation is repeated.
  • a package 10 comprising a bag body 12 which may be formed in single or multiple layers provided with a sliderless zipper 14.
  • the bag body 12 includes opposed side walls 16, 18 joined at bottom edge 20, top edge 22, and side edges 24, 26.
  • the top and bottom edges are formed by folds in the plastic material from which the bag is made while the side edges are defined by seals extending across the bag from top to bottom.
  • the zipper 14 is formed of a relatively thin carrier tape 28 to which zipper strips 30, 32 are permanently attached.
  • Each of the zipper strips 30, 32 includes an elongated profile 34,36 which is coextensive with the strip.
  • the profiles are contoured to enable them to interengage with each other in a well known fashion.
  • a flange 38 is provided on one of the zipper strips 30 to facilitate disengaging the profiles to open the package 10 when closed with the zipper 14.
  • Each of the zipper strips 30, 32 has a margin 40, 42 adjacent to its profile and the zipper strips are bonded to the carrier tape 28 in bonding areas 44, 46 disposed within the margin.
  • the carrier tape and zipper strips may each be formed of a fusible plastic material, such as polyethylene, thereby enabling the zipper strips 30, 32 to be heat sealed to the carrier tape 28. If the zipper strips or carrier tape are not formed of a fusible material they may be bonded to one another using a suitable adhesive having sufficient gripping force to withstand the force needed to disengage the profiles to open the package.
  • a fusible plastic material such as polyethylene
  • the bonding areas 44 and 46 are spaced apart from each other and the carrier tape between the bonding areas is provided with a preweakened zone 48 defined by a line of perforations, a partial score line or the like. It may also be noted from Fig. 2 that the preweakened zone 48 is off center between the bonding areas 44, 46 dividing the carrier tape into longitudinal sections 52, 54 with substantially more of the carrier tape material on the side of the preweakened zone 48 adjacent bonding area 44. As a result, when the carrier tape is ruptured along the preweakened zone and the zipper profiles separated, the longitudinal carrier tape section 52 overlies the profile 34 as shown highly exaggerated in Fig. 3. This provides a convenient pour flap through which the contents of the package may be poured after the bag side wall 50 below the zipper assembly is ruptured.
  • the carrier tape defines a border extending completely about the zipper strips. That is, the border includes end sections 56, 58 as well as longitudinal side sections 60, 62. The end sections of the border 56, 58 extend to the side edges 24, 26 of the bag body so that the side seams for the final package need only pass through the carrier tape and not though the zipper profiles. Since the thickness of the carrier tape is nominal (in the order of 1-5 mils) as compared with the thickness of the zipper profile (on the order of 60 mils or more) no special pre or post treatment of the zipper assembly at the side seals is necessary. That is, no ultrasonic spot seal, flattening of the carrier tape or the like is required in order to insure a proper seal.
  • the package 10 is to be formed on form, fill and seal equipment since no major modification of the equipment is required to accommodate the film from which the package is to be formed notwithstanding the fact that it contains a zipper.
  • the zipper may be discontinuous and extend across only a portion of the package (rather than from side to side or top to bottom) by making the end sections 56,58 wide enough. This is extremely useful in controlling the flow of powder or granular material from the package.
  • the size of the zippered opening may be tailored to the product to be packaged.
  • Fig. 5 a modification of the package of the present invention is depicted in that the zipper assembly 14 is provided on the inside of the package 64 as distinct from the package 10 depicted in Figs. 1 and 2 wherein the zipper is on the outside.
  • the bag body must be cut in the area 66 overlying the zipper in order to gain access to the zipper 14.
  • the zipper assembly need not have any particular barrier properties since access to the product within the package is gained only after the initial rupture of the bag wall.
  • shelf life for the package is dependent only on the properties of the material from which the bag body is formed and the zipper only aids in enhancing household storage after the package has been opened.
  • the free edges of the zipper strip may be joined together at a tear bead as shown in Fig. 8.
  • the bead 68 may be conveniently formed of a denser plastic having a higher tensile strength than the zipper strips.
  • the zipper strips are formed of polyethylene
  • the tear bead may be formed of polypropylene.
  • the tear bead 68 may be fused to the bag body as well as the zipper strips thereby facilitating the rupturing of the bag body to gain access to the zipper.
  • a form fill and seal machine 70 is depicted wherein a package 10 as described above may be formed as a product is filled into the package through a filling spout 72.
  • a film 74 having a desired barrier properties for the product to be filled in the package is brought to the filling spout 72 and formed into a tube about the spout by joining the edges 76,78 of the film together and sealing them with sealing bar 80.
  • a zipper tape 82 which comprises carrier tape 28 containing discrete lengths of zipper 14 bonded thereto is fed past appropriate guide rollers 84 to abut the tube 79 and the longitudinal borders 52,54 of the carrier tape are heat sealed to the tube with sealing bars 86,88. As shown in Fig.
  • the zipper tape 82 is brought to the outside of the tube to form a package as shown in Fig. 2.
  • a package such as that depicted in Fig. 5 may be formed.
  • the zipper tape 82 may be formed as disclosed in, my commonly assigned U.S. Patent 5,024,537 which issued on June 18, 1991 for TAPE CARRIED PRE-CUT ZIPPER.
  • a downstream cross seam is formed across the tube by sealing bars 90,92 sealing the bottom of the tube.
  • the tube is then filled with product against the downstream seam as it continues to move downward.
  • an upstream cross seam 26 is formed completing and separating the filled package 10 and forming the downstream seam for the next package.
  • the cross seams are formed only in the blank sections of carrier tape 94 between adjacent discrete sections of zipper 96 on the carrier tape. Accordingly, the sealing bars 90,92 are not confronted with the relatively large mass of plastic at the zipper but only the nominal additional mass of the carrier tape.
  • a hot pinch jaw 98,100 is provided downstream of the sealing bars 86,88 to fuse the tear bead 68 to the adjacent section of tube 100 as it passes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
EP19920402252 1991-08-09 1992-08-07 Reclosable plastic bags and method of making same utilizing discontinuous zipper strip Ceased EP0528721A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74320091A 1991-08-09 1991-08-09
US743200 1991-08-09

Publications (2)

Publication Number Publication Date
EP0528721A2 true EP0528721A2 (fr) 1993-02-24
EP0528721A3 EP0528721A3 (en) 1993-09-22

Family

ID=24987886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920402252 Ceased EP0528721A3 (en) 1991-08-09 1992-08-07 Reclosable plastic bags and method of making same utilizing discontinuous zipper strip

Country Status (2)

Country Link
EP (1) EP0528721A3 (fr)
CA (1) CA2070937C (fr)

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667288A1 (fr) * 1994-02-14 1995-08-16 Flexico-France Machine et procédé de conditionnement de produits dans des emballages étanches refermables
WO1996029277A1 (fr) * 1995-03-21 1996-09-26 Newlands Paulo Roberto Jannott Sachet valvulaire etanche a l'air
US5601368A (en) * 1995-05-11 1997-02-11 Lakeland Micro, Inc Tamper-evident container with reclosable fastener and method for making
EP0843636A1 (fr) * 1995-08-09 1998-05-27 James Worth Yeager Feuil et sac pourvus d'une fermeture a glissiere
US5782733A (en) * 1992-10-26 1998-07-21 Innoflex Incorporated Zippered film and bag
US5806984A (en) * 1996-07-03 1998-09-15 Innoflex Incorporated Recloseable bag with profile strip fastener assembly
US5816018A (en) * 1996-02-27 1998-10-06 Flexico-France Machine for automatically forming, filling, and closing bags having transverse closure ribs
US5829884A (en) * 1997-06-19 1998-11-03 Innoflex Incorporated Form fill and seal package with one-way vent
WO1999020529A1 (fr) * 1997-10-17 1999-04-29 Ica S.P.A. Procede de fixation, a l'interieur d'un receptacle flexible, d'une bande-fermeture a glissiere fermee lors du processus de formation d'emballages
WO1999024322A2 (fr) 1997-11-06 1999-05-20 Flexico-France Machine de formation, remplissage et fermeture de sacs, a profiles de fermeture transversaux
US5951453A (en) * 1996-11-15 1999-09-14 Innoflex Incorporated Recloseable bag assembly and method of making same
EP0941928A1 (fr) 1998-03-10 1999-09-15 Flexico-France Procédé et machine de formation de sachets avec fermeture à profilés transversaux
US5954433A (en) * 1997-12-05 1999-09-21 Innoflex Incorporated Reclosable bag with improved opening feature
EP0968928A1 (fr) * 1998-07-03 2000-01-05 Autobar Flexible France Sac refermable étanche
US6079878A (en) * 1997-04-11 2000-06-27 Yeager; James W. Reclosable bag with profile strip fastener assembly, and bag body
EP1020369A1 (fr) * 1999-01-13 2000-07-19 Fres-Co System Usa, Inc. Emballage souple refermable
US6131370A (en) * 2000-02-09 2000-10-17 Illinois Tool Works Inc. Zipper applied across a film in transverse direction
US6138329A (en) * 1997-01-18 2000-10-31 Illinois Tool Works Inc. Fastener assembly, fastener tape material, bag utilizing fastener tape material, and method of manufacture thereof
WO2000064765A1 (fr) * 1999-04-27 2000-11-02 Flexico-France Sachet comprenant des profiles de fermeture actionnes par curseur
US6224262B1 (en) * 1999-03-08 2001-05-01 Innoflex Incorporated Bag with perforated opening and reinforcing patch
US6247843B1 (en) * 1999-05-14 2001-06-19 Reynolds Consumer Products, Inc. Resealable closure arrangement with side tamper evident strip for use with a slider device
US6264366B1 (en) * 1999-05-14 2001-07-24 Reynolds Consumer Products, Inc. Reclosable closure arrangement having encapsulated zipper closure, reclosable profiles, and slider device; and methods
US6273607B1 (en) * 2000-01-18 2001-08-14 Reynolds Consumer Products, Inc. Reclosable package having a slider device and tamper-evident structure
US6290390B1 (en) * 2000-01-18 2001-09-18 Reynolds Consumer Products, Inc. Reclosable package having a slider device and a tamper-evident structure
US6290391B1 (en) * 2000-01-18 2001-09-18 Reynolds Consumer Products, Inc. Reclosable package having slider device and tamper-evident structure
US6347885B1 (en) 2000-01-18 2002-02-19 Reynolds Consumer Products, Inc. Reclosable package having a zipper closure, slider device and tamper-evident structure
US6386760B1 (en) 2000-06-12 2002-05-14 Reynolds Consumer Products, Inc. Slider reclosable bags with dual tamper-evident features
US6467957B2 (en) 2000-02-03 2002-10-22 Innoflex Incorporated Adhesive closure strip, bag and method
FR2837468A1 (fr) * 2002-02-04 2003-09-26 Illinois Tool Works Dispositifs barrieres pour sacs en plastique
EP1457428A1 (fr) * 2003-03-13 2004-09-15 Illinois Tool Works, Inc. Emballages refermables, méthode pour leur fabrication, produit manufacturé et ensemble fermeture à glissière avec curseur
US6830377B2 (en) * 2002-05-30 2004-12-14 Illinois Tool Works Inc. Reclosable packaging with gas barrier incorporated in zipper
EP1495984A2 (fr) * 1996-10-29 2005-01-12 Lakeland Micro, Inc. Contenant indicateur d ' effraction doté d' un systeme d' attache pouvant se refermer , et procédé associe
US6863754B2 (en) 1999-10-12 2005-03-08 Com-Pac International, Inc. Apparatus and method for manufacturing reclosable bags utilizing zipper tape material
US6913387B2 (en) * 1999-05-11 2005-07-05 Sargento Foods, Inc. Resealable bag for filling with food product (s) and method
US6960021B2 (en) * 2002-10-02 2005-11-01 Illinois Tool Works Inc. Reclosable packages with front panel slider-zipper assembly
US7048442B2 (en) * 2002-05-15 2006-05-23 Illinois Tool Works Inc. Reclosable packaging for scoopable products and method of manufacture
US7101079B2 (en) 1999-05-11 2006-09-05 Sargento Foods, Inc. Resealable bag for filling with food product(s) and method
US20070261215A1 (en) * 2004-03-24 2007-11-15 Leighton Murray E B Reclosable Bag
US7476030B1 (en) * 2000-09-18 2009-01-13 Kabushiki Kaisha Hosokawa Yoko Fastener bag and fastener device
US8002467B2 (en) 1999-10-12 2011-08-23 Com-Pac International, Inc. Reclosable fastener profile seal and method of forming a fastener profile assembly
US9011003B2 (en) 2006-02-08 2015-04-21 S.C. Johnson Home Storage, Inc. Reclosable pouch and zipper for a reclosable pouch
CZ305349B6 (cs) * 2013-12-06 2015-08-12 Velteko S.R.O. Způsob aplikace páskového uzávěru na fóliovou hadici ve vertikálním balicím stroji
US9227774B2 (en) * 2004-12-07 2016-01-05 Idemitsu Unitech Co., Ltd. Zipper and zipper-equipped bag
WO2020078869A1 (fr) 2018-10-15 2020-04-23 Gea Food Solutions Weert B.V. Machine à envelopper à flux vertical, sachet avec segment de moyen de refermeture et procédé pour produire un sachet refermable

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US6286999B1 (en) 1999-05-11 2001-09-11 Pactiv Corporation Tamper-evident reclosable bag
US7067037B2 (en) 1999-10-12 2006-06-27 Com-Pac International, Inc Modular reciprocating heat seal jaw assembly

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GB1186733A (en) * 1966-06-13 1970-04-02 Windmoeller & Hoelscher Bag Manufacture
US3532571A (en) * 1967-06-28 1970-10-06 Steven Ausnit Method and apparatus for forming continuous plastic tubing with separable pressure reclosable fastener strips attached to the surface thereof
US4894975A (en) * 1988-03-09 1990-01-23 Minigrip, Inc. Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
EP0423456A1 (fr) * 1989-10-13 1991-04-24 Illinois Tool Works Inc. Eléments de fermeture à glissière modifiés pour récipients faciles à ouvrir
US5024537A (en) * 1990-01-08 1991-06-18 Zip-Pak Incorporated Tape carried pre-cut zipper
EP0450741A1 (fr) * 1990-04-03 1991-10-09 Colgate-Palmolive Company Fermeture pour sac

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1186733A (en) * 1966-06-13 1970-04-02 Windmoeller & Hoelscher Bag Manufacture
US3532571A (en) * 1967-06-28 1970-10-06 Steven Ausnit Method and apparatus for forming continuous plastic tubing with separable pressure reclosable fastener strips attached to the surface thereof
US4894975A (en) * 1988-03-09 1990-01-23 Minigrip, Inc. Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
US4894975B1 (fr) * 1988-03-09 1991-12-03 Minigrip Inc
EP0423456A1 (fr) * 1989-10-13 1991-04-24 Illinois Tool Works Inc. Eléments de fermeture à glissière modifiés pour récipients faciles à ouvrir
US5024537A (en) * 1990-01-08 1991-06-18 Zip-Pak Incorporated Tape carried pre-cut zipper
EP0450741A1 (fr) * 1990-04-03 1991-10-09 Colgate-Palmolive Company Fermeture pour sac

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6779921B2 (en) 1992-10-26 2004-08-24 Innoflex Incorporated Zippered film and bag
US6177172B1 (en) 1992-10-26 2001-01-23 Innoflex Incorporated Zippered film and bag
US5782733A (en) * 1992-10-26 1998-07-21 Innoflex Incorporated Zippered film and bag
US5902047A (en) * 1992-10-26 1999-05-11 Innoflex Incorporated Zippered bag and film
US6019512A (en) * 1992-10-26 2000-02-01 Yeager; James W. Zippered film and bag
EP0667288A1 (fr) * 1994-02-14 1995-08-16 Flexico-France Machine et procédé de conditionnement de produits dans des emballages étanches refermables
FR2716158A1 (fr) * 1994-02-14 1995-08-18 Flexico France Sarl Machine et procédé de conditionnement de produits dans des emballages étanches refermables.
WO1996029277A1 (fr) * 1995-03-21 1996-09-26 Newlands Paulo Roberto Jannott Sachet valvulaire etanche a l'air
US5601368A (en) * 1995-05-11 1997-02-11 Lakeland Micro, Inc Tamper-evident container with reclosable fastener and method for making
US5823933A (en) * 1995-08-09 1998-10-20 Innoflex Incorporated Zippered film and bag
EP0843636A1 (fr) * 1995-08-09 1998-05-27 James Worth Yeager Feuil et sac pourvus d'une fermeture a glissiere
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Also Published As

Publication number Publication date
EP0528721A3 (en) 1993-09-22
CA2070937A1 (fr) 1993-02-10
CA2070937C (fr) 1998-09-15

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