|Publication number||US20050244084 A1|
|Application number||US 10/838,554|
|Publication date||Nov 3, 2005|
|Filing date||May 3, 2004|
|Priority date||May 3, 2004|
|Also published as||EP1593609A2, EP1593609A3, US20070127851|
|Publication number||10838554, 838554, US 2005/0244084 A1, US 2005/244084 A1, US 20050244084 A1, US 20050244084A1, US 2005244084 A1, US 2005244084A1, US-A1-20050244084, US-A1-2005244084, US2005/0244084A1, US2005/244084A1, US20050244084 A1, US20050244084A1, US2005244084 A1, US2005244084A1|
|Inventors||Paul Tilman, James Buchman|
|Original Assignee||Tilman Paul A, Buchman James E|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (25), Referenced by (2), Classifications (11), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates broadly to reclosable packages and methods of forming such packages, and more particularly, pertains to reclosable packages manufactured on form, fill and seal machines wherein the reclosable packages are self-supporting.
Form, fill and seal technology is known in the packaging industry as a method to package consumable goods. Consumable goods that are not used completely when the package is initially opened rely on a zipper closure to reclose the package and keep the remaining contents fresh. In some applications, a tamper-evident seal is included on the package to signify whether access has been gained to the zipper closure. Examples of consumable goods that are often packaged in packages with a zipper closure include potting soil, fertilizer, pet food, dog biscuits, and many different foods edible by humans.
For certain goods, the bottom of the reclosable package is provided with a configuration that will enable the package to stand up and be self-supporting in an upright position when resting on a horizontal supporting surface such as a shelf, cupboard, table or the like. Further developments in providing these types of stand-up packages with improved stability are desirable.
It is one object of the present invention to provide an improved method of manufacturing a reclosable, stand-up package by inserting a stand-up web in a horizontal form, fill and seal process for making plastic bags.
It is also an object of the present invention to provide an improved reclosable, stand-up package that has a stronger, sturdier and more stable base capable of supporting the package so that it will not tip over.
The present invention is directed to a method of manufacturing a reclosable, free standing package adapted to be self-supporting in an upright position when resting on a horizontal support surface. The method includes the steps of providing a bottom panel in the form of a stand-up web having a planar base and a pair of legs depending from opposite ends of the base. The stand-up web is inserted between a first film panel and a second film panel and a lower end of the first film panel is sealed to one of the legs and a lower end of the second film panel to the other of the legs. Thus, an entire surface of the base lies substantially parallel to a plane containing the bottom edges.
The step of sealing the first and second film panels to the legs includes only horizontal sealing. The method includes the step of creating side seams by providing seals across the first film panel and the second film panel. The method further includes the steps of providing a combined zipper closure and slider device between the first film panel and the second film panel, and sealing a first closure profile of the zipper closure to the first film panel and sealing a second closure profile of the zipper closure to the second film panel. Prior to providing a combined zipper closure and slider device between the first film panel and the second film panel, the continuous film web can be slit to create the first film panel and the second film panel. Alternatively, the web can be folded onto itself to create the first and second film panels. The step of providing a stand-up web includes unwinding and folding of a supply of film. The method further includes the step of providing a tamper-evident header over the slider device to indicate whether access has been gained to the slider device. The method also includes the step of providing a tamper-evident membrane between the first closure profile and the second closure profile. The step of slitting the film web is preceded by the step of passing the film over a V-board. The step of providing a combined zipper closure and slider device between the first film panel and the second film panel includes the step of feeding the combined zipper closure and slider device through a bottom end of the V-board. Alternatively, the step of providing a combined zipper closure and slider device between the first film panel and the second film panel includes a step of feeding the combined zipper closure and slider device in front of the V-board.
In another aspect of the invention, a reclosable, stand-up package includes first and second side panels, each having a top edge, opposed side edges and a bottom edge. The opposed side edges of the side panels are sealed together. A zipper closure is sealed to the first and second side panels along the top edges thereof. The zipper closure extends from one of the sealed side edges to the other of the sealed side edges. A slider device is operably mounted on the zipper closure for opening and closing the zipper closure. A bottom panel has a planar base and a pair of legs depending from opposite ends thereof. The pair of legs are sealed to the bottom edges of the first and second side panels such that the base is raised a constant distance above the bottom edges. The bottom panel provides a widened configuration enabling the package to be self-supporting in an upright position when the bottom edges are adapted to rest on a horizontal support surface. The legs of the bottom panel are sealed to the bottom edges of the first and second side panels along entire lengths of the bottom edges extending between the opposed sealed side edges. The zipper closure includes a removable internal tamper-evident membrane extending between the first and second side panels. The package also includes a removable tamper-evident header connected to the zipper closure and surrounding the slider device.
Various other objects, features and advantages of the invention will be made apparent from the following description taken together with the drawings.
The drawings illustrate the best mode presently contemplated of carrying out the invention.
The addition of a stand-up web to a flexible package, such as a bag, is advantageous in enabling the package to be self-supporting without tipping over. The process described herein installs a stand-up web to bags manufactured using form, fill and seal machines.
A flexible, reclosable package or bag 10 having side panels 12, 14 and a raised bottom panel 16 is shown in
A slider device 44 is mounted on zipper closure 26 to facilitate opening and closing zipper closure 26. Slider devices and how they function to open and close zipper closures in general are taught in U.S. Pat. Nos. 5,063,644; 5,301,394 and 5,664,220, each of which is incorporated by reference herein. A notch (not shown) is disposed within zipper closure 26 adjacent to edge 34 in the bag 10. The notch is designed to provide a “park place” into which slider device 44 settles when zipper closure 26 is sealed and slider device 44 is at the first edge 32. Such notch decreases any tendency for an incomplete interlock between first mating profile 28 and second mating profile 30.
The bag 10 described and shown in
Referring now to
The web 50, which will provide side panels 12, 14, is supplied on a roll. In an alternative embodiment, the web 50 may comprise one or more layers of film. A series of tensioners 52 helps to control tension on the web 50 during the bag making process. From the tensioners 52, the web 50 progresses to a V-board 54 where the web 50 is folded as depicted in
An extended length of zipper closure 26 is provided via spool 62 simultaneously with the feeding of film 50. The “home” notches discussed above are punched into zipper closure 26 at an interval defined by the bag width by an in-line punch 64 that may be a die, stamp, knife or other such process. Each notch is formed in the profile of zipper closure 26 before the zipper closure 26 is incorporated into the bag 10. Slider device 44 is provided from a rotating bowl 66 having a delivery conduit 68 which delivers a series of properly-oriented slider devices 44 to an applicator 70. The applicator 70 combines the zipper closure 26 with slider device 44 so that the slider device 44 is parked in the notch punched in the zipper disclosure 26. If misaligned on the zipper closure 26 or notch, the slider device 44 can be phased into register with the notch by sliding or moving the slider device 44 along zipper profile by guides or the like, until the slider device 44 is in register with the bag parked position or notch.
The zipper closure 26 with the slider device 44 is fed through a slot or the like at the base of the V-board 54 in between the two film halves 58, 60 of web 50 as represented in
It is to be noted that because the bag 10 is manufactured upside down (i.e. the top of the bag 10 is at the bottom of the process line), the zipper closure 26 with the slider device 44 is positioned at the bottom of the film halves 58, 60 during bag formation.
After the film halves 58, 60 pass between a pair of vertical rolls 71, a film from a roll 72 is folded at 73 (
After the introduction of the stand-web 74, heated seal bars 82 provide vertical seals on the film and zipper closure combination. These vertical seals will eventually result in side seams 18, 20 of package or bag 10 in
A top seal bar 84, positioned at the bottom of the process line, seals the zipper closure 26 to the film halves 58, 60 and can further be used to provide sealing of the tamper-evident header 46. The tamper-evident structure 46 provides an indication to the consumer whether bag 10 has been previously opened. In order to gain access to the interior of bag 10, the tamper-evident header 46 needs to be penetrated. Top seal bar 84 has first sealing surfaces positioned to provide pressure and typically heat to the area where the flanges 38, 40 of zipper closure 26 meets the film halves 58, 60 to form seals 86, 88 (
A bottom seal bar 98 located at the top of machine 48 is used to heat seal the base 76 and provide seals 100, 102 between legs 78, 80 of the stand-up web 74 and the bottom edges of the film halves 58, 60 as depicted in
Bottom seal bar 98 may include an adjustable depth perforator for providing perforations 104 (
A vertically oriented blade or cutter bar 106 cuts the edges at the side seams 18, 20 to provide individual, filled, free standing packages 108.
It should now be appreciated that either process machine 48 provides a flexible, reclosable stand-up bag 10 with a removable tamper-evident header 46 as shown in
Having described the presently preferred embodiments, it is to be understood that the invention may be otherwise embodied within the scope of the appended claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2718105 *||Dec 31, 1948||Sep 20, 1955||J L Ferguson Company||Bag-like containers of flexible strip material, process of making same, process of filling same, and apparatus for accomplishing these purposes|
|US3380646 *||Nov 12, 1963||Apr 30, 1968||Louis Doyen||Container of plastic material and method of producing same|
|US3700018 *||Jan 6, 1971||Oct 24, 1972||Goglio Luigi||Semirigid container|
|US3935993 *||Jan 21, 1974||Feb 3, 1976||Leon Doyen||Free-standing container|
|US3980225 *||Aug 4, 1975||Sep 14, 1976||Dai Nippon Insatsu Kabushiki Kaisha||Self-standing bag|
|US4353497 *||Feb 13, 1981||Oct 12, 1982||Mobil Oil Corporation||Free-standing thermoplastic bag construction|
|US4954124 *||Jan 30, 1989||Sep 4, 1990||The Dow Chemical Company||Stand-up plastic bag and method of making same|
|US5059036 *||Apr 27, 1990||Oct 22, 1991||Kapak Corporation||Vented pouch arrangement and method|
|US5080643 *||Jun 5, 1990||Jan 14, 1992||Dow Brands Inc.||Method of making a stand-up plastic bag|
|US5350240 *||Dec 17, 1991||Sep 27, 1994||S. C. Johnson & Son, Inc.||Stand-up pouch having cross-seal feature and method of making|
|US5437406 *||Jul 2, 1993||Aug 1, 1995||International Paper||Semi-rigid cereal carton|
|US5716473 *||Apr 25, 1995||Feb 10, 1998||International Paper||Method of making a semi-rigid cereal carton|
|US5772332 *||Oct 2, 1995||Jun 30, 1998||Atifon Ltd.||Container having a rectangular base and its manufacturing|
|US5785428 *||Dec 13, 1996||Jul 28, 1998||Reynolds Consumer Products, Inc.||Bag for storing and washing produce|
|US6007246 *||Sep 29, 1998||Dec 28, 1999||Kraft Foods Inc.||Reclosable container arrangement|
|US6131806 *||Feb 10, 2000||Oct 17, 2000||Aptargroup, Inc.||Dispensing structure incorporating a valve-containing fitment for mounting to a container and a package with a dispensing structure|
|US6212861 *||Jun 16, 2000||Apr 10, 2001||Orihiro Engineering Co., Ltd.||Forming, filling and sealing machine for standing pouch|
|US6231237 *||Feb 26, 1998||May 15, 2001||Atifon Ltd.||Container having rectangular base and its manufacturing|
|US6254907 *||Apr 27, 2000||Jul 3, 2001||Fres-Co System Usa, Inc.||Bowl bag with resealable closure means|
|US6293896 *||Dec 20, 1999||Sep 25, 2001||Reynolds Consumer Products, Inc.||Methods of manufacturing reclosable package having a slider device|
|US6334710 *||Dec 22, 1999||Jan 1, 2002||Hosokawa Yoko Co., Ltd.||Self-standing container|
|US6533456 *||Oct 1, 2001||Mar 18, 2003||Reynolds Consumer Products, Inc.||Reclosable stand-up package, and methods|
|US7156556 *||Dec 25, 2002||Jan 2, 2007||Plast Corporation||Stand-up packaging pouch, package body and feed roll, and manufacturing methods therefor|
|US20010053253 *||Jan 16, 2001||Dec 20, 2001||Reynolds Consumer Products, Inc.||Reclosable package having zipper closure, slider device and dual tamper-evident structures; and methods|
|US20020196987 *||Jul 2, 2002||Dec 26, 2002||Tilman Paul A.||Tamper evident package having slider device, and methods|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7972064||Mar 29, 2005||Jul 5, 2011||Cti Industries Corporation||One way valve and container|
|US20130067860 *||Sep 19, 2012||Mar 21, 2013||Illinois Tool Works Inc.||Form fill compression seal and cut-off packaging system for compressible goods|
|U.S. Classification||383/64, 383/204, 383/61.2, 383/104, 383/5|
|International Classification||B65D75/00, B65D33/25|
|Cooperative Classification||B65D33/2591, B65D75/008|
|European Classification||B65D75/00E, B65D33/25C|
|May 3, 2004||AS||Assignment|
Owner name: REYNOLDS CONSUMER PRODUCTS, INC., VIRGINIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TILMAN, PAUL A.;BUCHMAN, JAMES E.;REEL/FRAME:015874/0746
Effective date: 20040430