Cord, String, Wire, Or Thread Patents (Class 383/206)
  • Patent number: 11305928
    Abstract: A packaging bag is a packaging bag made of a laminate formed in a bag shape which is in a rectangular shape in plan view, the laminate being composed of a sheet-shaped substrate made of a resin, a cushioning material made of a foamed resin sheet laminated on an inner side relative to the substrate, and a sealant layer laminated on an inner side relative to the cushioning material. The packaging bag includes a seal section in which the sealant layers are sealed to each other on one end edge in a flow direction (MD direction) of the foamed resin sheet, the seal section extending in a direction perpendicular to the flow direction of the foamed resin sheet, wherein a notch is formed in the seal section to be oriented to the other end edge in the flow direction of the foamed resin sheet.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: April 19, 2022
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Misao Nishigaki, Eriko Nagata
  • Patent number: 10287080
    Abstract: A device for easily unwrapping a package forming a personalized pattern in the paper is provided. The device includes a first adhesive elongated strip layer, comprising: a first and second horizontal elongated edges having first and second ends; and first and second vertical side edges extending between the first and second horizontal elongated edges. Further included is a second adhesive elongated strip layer separated from the first adhesive layer by a gap, the second adhesive layer elongated strip, comprising first and second horizontal elongated edges each having first and second ends and first and second vertical side edges extending between the horizontal elongated edges. A first non-adhesive strip layer placed over the gap, a tearing thread located on the first non-adhesive strip layer; and a second non-adhesive strip layer located on top of the tearing thread and the first non-adhesive strip layer.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 14, 2019
    Assignee: Scissio, LLC
    Inventor: Brett Stewart
  • Patent number: 9011006
    Abstract: A bag 1 with a reclosable tape includes a reclosable tape 20 having a male fastener part 21 and a female fastener part 22 attached to one inner surface of a bag body 10, a cut tape 23 provided between mounting base parts 212 and 222 of those fastener parts, and an easily unsealable structure 50 formed on the mounting base part 212 adjacent to the cut tape 23 in an unsealing start part 30 of a side seal part 60 of the bag body. The easily unsealable structure 50 may be formed by: forming a hole portion 50a or a portion formed by a weak line on the mounting base part 212, arranging a thickness of the mounting base part 212 in the unsealing start part 30 so as to be thinner than other portions, or forming a non-adhesive part between the mounting base part 212 and the cut tape 23.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: April 21, 2015
    Assignee: Idemitsu Unitech Co., Ltd.
    Inventors: Shuichi Goto, Kenichi Tanaka
  • Publication number: 20150047995
    Abstract: A package (1) comprises a container enveloped in a wrapper (80) The wrapper (80) comprises a film (81) with overlapping portions which are sealed together. The wrapper (80) further comprises a tear strip (82) extending at least partially around the container and having an end tab. The wrapper is configured such that pulling the tab causes a tear to propagate through the film and the tear strip to come away from the container and the entire film to come away from the container attached to the tear strip. The tear strip (82) is defined by two reinforcing tear tapes (83a, 83b) on either side of the tear strip. Each tear tape (83a, 83b) has a respective first remote end (84a, 84b) at the tab, and the two tear tapes extend from the tab and diverge away from each other at least partially around the container such that the width of the tear strip enlarges around at least a part of the perimeter of the container.
    Type: Application
    Filed: February 13, 2013
    Publication date: February 19, 2015
    Inventors: Paul Gibson, Robert Whiffen
  • Patent number: 7988681
    Abstract: The present invention relates to a portable waste containment device that is rapidly deployable. The waste containment device allows containment of liquid or semi-liquid waste until permanently disposed. The present invention also provides a portable waste containment system wherein the waste containment device is enclosed within a package for storage and when pulled from the package the waste containment device is ready for use. Still further, the present invention provides a method of using the portable waste containment device of the present invention.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: August 2, 2011
    Inventors: Kermetta M McGarity, Howard C McGarity, Jr.
  • Patent number: 7722255
    Abstract: Described herein is a device for opening hermetic flexible containers, comprising a flexible strip heat-sealed to the internal surface of a wall of the container and incorporating a tape-like thread having a tear tab to cause tearing of the strip, and the consequent tearing of the wall of the container, via a gripping tab of said wall. The gripping tab and tear tab are staggered with respect to one another and hermetically isolated by a heat seal between the strip and the wall of the container.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: May 25, 2010
    Assignee: Sales S.p.A.
    Inventor: Emilio Tessera Chiesa
  • Publication number: 20100119180
    Abstract: A description is given of a paper valve bag with an inner panel which is located at the paper-bag end which is located opposite the paper-bag end with valve, and, on its surface which is directed toward the sack interior, the inner panel has an opening aid which has a higher modulus of elasticity than the inner panel. The opening aid, which may be a tear-open strip or a tear-open thread, projects beyond the inner panel at at least one surface-area end of the latter. Such paper valve bags are used for fine-grain, pulverulent and/or free-flowing materials, in particular ready-to-use mortar.
    Type: Application
    Filed: February 16, 2008
    Publication date: May 13, 2010
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventors: Markus Wiedemann, Florian Baumeister, Werner Schmid, Manfred Huber, Edith Wörnhör
  • Publication number: 20100067832
    Abstract: A packaging for a food product that is configured to be easily openable includes a film substantially surrounding a food product and formed from a sheet having a first longitudinal side and a second longitudinal side, and a seam formed by the first longitudinal side overlapping and bonding to the second longitudinal side. The film may be formed to have directional tear properties generally perpendicular to the seam, the directional tear properties defining at least one tear path in the film.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 18, 2010
    Inventors: Jeffrey A. Czarny, Jason S. Fournier, Erin Scheffler, Laura Micale Gilbert, Britton Craig Walters, Rutger Thiellier, Jonathan Honor
  • Patent number: 7673788
    Abstract: The package opening device is an adhesive strip adapted for mounting on a cover of a package, the adhesive strip having a gripping member allowing the user to pull on the gripping member to tear at least a portion of the cover of the package. The package opening device includes a base strip having a proximal portion, a distal portion, an upper surface, and a lower surface. An adhesive layer at least partially covers the distal portion of the lower surface of the base strip, and the uncovered proximal portion forms the gripping member. Further, a release liner may be provided for covering the adhesive layer prior to application to the cover of the package. Alternatively, a plurality of adhesive strips may be provided, with the plurality of adhesive strips being joined together by a line, with user-generated tension in the line creating the tearing force.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 9, 2010
    Inventor: Mario Calabretta
  • Patent number: 7470063
    Abstract: A reclosable bag (22) has a top seal (26) and a reclosable zipper (14). A tear string (16) passes through the top seal (26) and has a free end which can be grasped to open the top seal. The bag is made using cross-web technology with the tear strings (16) being attached to the lengths of zipper and the free ends of the strings being concertinaed in the top seal zone.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: December 30, 2008
    Assignee: Illinois Tool Works Inc.
    Inventor: Murray Edward Bruce Leighton
  • Publication number: 20080135428
    Abstract: A film wrapper (99) comprises a tear tape (30) and at least one weakening line (10, 12) next to the tear tape (30), the longitudinal axis of the at least one weakening line (10, 12) being substantially perpendicular to the tear tape (30) (perpendicular weakening lines (10, 12)). An article is wrapped into the film wrapper. A multi-bladed knife (100) used for producing the film wrapper comprises a U-shaped or V-shaped first blade (110) and a second linear blade (112) parallel to the longitudinal axis of said first blade (110) and a third linear blade (111) perpendicular to the longitudinal axis of the first blade (110).
    Type: Application
    Filed: November 25, 2005
    Publication date: June 12, 2008
    Inventor: Bernard Tallier
  • Patent number: 7011083
    Abstract: A paintball hopper refill apparatus or loading apparatus is disclosed, which includes a body, an interior, a neck and a dispensing portion where the body is made of a flexible material, the interior is designed to be filled with a plurality of paintballs and the dispensing portion is designed to be opened either by pulling a pull string or by squeezing allowing the paintballs to flow from the loading apparatus to the hopper. A method for filling a hopper using the loading apparatus of this invention is also disclosed.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 14, 2006
    Inventors: Stephen Ho, Kheng Phang
  • Patent number: 6991375
    Abstract: Touch fasteners useful for bags, packaging and other products as well as novel manufacturing of products incorporating such fasteners. A composite touch fastener has a fibrous loop strip partially encapsulated in, or otherwise permanently attached to, resin of a substrate, and an array of loop-engageable fastener elements integrally molded with resin of the substrate. The center portion of the closure seals the bag until it is torn away to expose the mating bands of loops and fastener elements. Methods of applying recloseable touch fasteners, e.g. hook and loop fasteners, to sheet or film include vertical form and fill and horizontal form and fill packaging and pouch making.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: January 31, 2006
    Assignee: Velcro Industries B.V.
    Inventors: William P. Clune, William H. Shepard, George A. Provost
  • Patent number: 6843600
    Abstract: A flexible, reclosable package includes first and second panel sections defining an interior, and a zipper sealed to each of the first and second panel sections along a top edge thereof. The zipper includes first and second mating profiles, each having an upper flange. A slider device is constructed and arranged for mounting on the zipper and for interlocking the first mating profile with the second mating profile when the slider device is moved in one direction, and disengaging the first mating profile from the second mating profile when the slider device is moved in another opposite direction. A tamper evident seal attaches the upper flanges of the first and second profiles together and extends through a passageway formed through the slider device.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: January 18, 2005
    Assignee: Reynolds Consumer Products, Inc.
    Inventors: Paul A. Tilman, James E. Buchman
  • Publication number: 20040136615
    Abstract: A flexible, reclosable package includes first and second panel sections defining an interior, and a zipper sealed to each of the first and second panel sections along a top edge thereof. The zipper includes first and second mating profiles, each having an upper flange. A slider device is constructed and arranged for mounting on the zipper and for interlocking the first mating profile with the second mating profile when the slider device is moved in one direction, and disengaging the first mating profile from the second mating profile when the slider device is moved in another opposite direction. A tamper evident seal attaches the upper flanges of the first and second profiles together and extends through a passageway formed through the slider device.
    Type: Application
    Filed: January 14, 2003
    Publication date: July 15, 2004
    Inventors: Paul A. Tilman, James E. Buchman
  • Publication number: 20030228078
    Abstract: Touch fasteners useful for bags, packaging and other products as well as novel manufacturing of products incorporating such fasteners. A composite touch fastener has a fibrous loop strip partially encapsulated in, or otherwise permanently attached to, resin of a substrate, and an array of loop-engageable fastener elements integrally molded with resin of the substrate. The center portion of the closure seals the bag until it is torn away to expose the mating bands of loops and fastener elements. Methods of applying recloseable touch fasteners, e.g. hook and loop fasteners, to sheet or film include vertical form and fill and horizontal form and fill packaging and pouch making.
    Type: Application
    Filed: February 4, 2003
    Publication date: December 11, 2003
    Inventors: William P. Clune, William H. Shepard, George A. Provost
  • Publication number: 20030215165
    Abstract: An easy-open closure arrangement for bags is described. The closure arrangement includes a base web having a pair of longitudinal edges with a pair of perforated tear lines running in the same direction as the longitudinal edges. The perforated tear lines are located substantially equidistant from the longitudinal edges. A frangible layer is attached to one side of the base web with the frangible layer being positioned over the perforated tear lines to obstruct the perforations on one side. A tear bead is attached to the frangible layer on the side of the frangible layer opposite from the base web at a position between the location of the perforated tear lines. Alternative closure arrangements and bags incorporating the closure arrangements are also described.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventors: Robert E. Hogan, Eric P. Plourde
  • Publication number: 20030152299
    Abstract: A pinch bottom bag construction, for a multiwall bag, incorporating an easy open feature, which permits the controlled opening of a portion of the mouth opening of the bag, to create a spout-like opening, with the use of a tear strip disposed on the upper step of the manufacturer's opening.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 14, 2003
    Inventors: Edward D. Culbertson, George Bradley Griffin
  • Patent number: 6599016
    Abstract: A pinch bottom bag construction, for a multiwall bag, incorporating an easy open feature, which permits the controlled opening of a portion of the mouth opening of the bag, to create a spout-like opening, with the use of a tear strip disposed on the upper step of the manufacturer's opening.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: July 29, 2003
    Assignee: Stone Container Corporation
    Inventors: Edward D. Culbertson, George Bradley Griffin
  • Publication number: 20030031386
    Abstract: A reclosable bag has a closure including first and second fastener strips. The first fastener strip includes a strip form base having an array of discrete hook fastener elements integrally molded with and extending from the base. The second fastener strip includes loop elements engageable by the hook fastener elements. The polyethylene bases of the fastener strips are welded directly to the body of the mailer, which is formed of a coextrusion of polyethylene materials. One of the fastener strips is unattached to the bag body along most of its length, so as to avoid undesired opening by shifting of bag contents. The bag is useful as an interoffice mailing envelope, for example.
    Type: Application
    Filed: August 12, 2002
    Publication date: February 13, 2003
    Inventors: William H. Shepard, William Clune
  • Patent number: 6315792
    Abstract: The invention creates a thin tubular multiple filament (film or fiber) structure that can hold high internal pressures. When desired, an extension of the filaments can be pulled in any direction to unfurl the structure. This device is useful for self expanding stent or stent graft delivery systems, balloon dilatation catheters, removable guide wire lumens for catheters, drug infusion or suction catheters, guide wire bundling casings, removable filters, removable wire insulation, removable packaging and other applications.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: November 13, 2001
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Joseph Robert Armstrong, Michael Vonesh
  • Patent number: 5945145
    Abstract: A package for sliced food product comprising a bottom wall, a top wall, opposite sidewalls and opposite end walls, wherein the package includes a flap which comprises portions of the top wall and/or an adjoining sidewall of the package, and which is movable between a closed position and an open position to selectively facilitate access to the package interior. The package is preferably made of a thin, flexible plastic material. The flap is removably retained in closed position by a peelable seal extending along one or more edges of the flap, or at least along portions thereof. The package is configured so that when the flap is in open position, the sliced food product is accessible from the side, which facilitates engagement of slice edges and subsequent separation thereof, as well as removal of the slices without undue distortion. This makes the package particularly useful in conjunction with packaging of certain sliced cheeses, although the package may also be useful with other products as well.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: August 31, 1999
    Assignee: Kraft Foods, Inc.
    Inventors: Jo Ellen Nielsen Narsutis, John F. McDevitt, John C. Little
  • Patent number: 5881869
    Abstract: A package comprising a plurality of filled sealed containers containing dispensable materials, adjacent containers (20a, 20b) being connected by a joint (40) which comprises a tear means (50) allowing the containers, to be torn open with a single tearing action.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: March 16, 1999
    Assignee: Smith & Nephew Plc
    Inventor: Simon John Hudson
  • Patent number: 5849253
    Abstract: A dispenser for powdered, granular, pellet, briquette or tablet-like material is provided. The dispenser includes a dispenser head through which the material dissolved in water can be dispensed. A spray device is provided at the head to spray water onto the material provided in the dispenser head. A suspension device is provided to suspend a bag containing the material above the dispenser head. The bag in its suspended orientation has a fastener along the bottom end which closes the bottom end of the bag. The fastener is not, however, releasable until after the bag is mounted in the dispenser. Then the fastener is releasable to allow the contents thereof to fall by gravity onto the dispenser head. The dispenser provides a system, which normally avoids contact of the toxic contents of the bag with the user. At the same time, the only waste is in the form of a bag which may be made of recyclable plastic, hence minimizing waste associated with the system.
    Type: Grant
    Filed: October 11, 1997
    Date of Patent: December 15, 1998
    Assignee: Diversey Lever, Inc.
    Inventors: Garry W. Crossdale, Peter J. Bacon, Michael Veveris
  • Patent number: 5839648
    Abstract: An easy opening device specifically adapted to packaging of flexible film (3) having a line of weakness in tearing (4), the device being characterized in that it comprises a patch (5) that is flexible and substantially inextensible such as a label, a membrane, or a piece of film, which patch is applied to the outside face of the film (3) astride the line of weakness (4), and includes, over said line (4), separation means (6) for separating the patch (5) into two parts (7a, 7b), which means are normally inactive when the packaging (3) is closed and are made active by the user exerting sufficient traction; means (8) for bonding the film (3) to the patch (5) on either side of the line of weakness (4) and in register with the two parts (7a, 7b); and means (9) for enabling at least one of the two parts (7a, 7b) to be grasped manually so as to make it possible, once the separation means (6) have been activated, to move the two parts (7a, 7b) apart from each other and open the packaging.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: November 24, 1998
    Assignees: Bongrain S.A., Grace S.A.
    Inventors: Jean-Luc Brigand, Jean-Luc Sornay
  • Patent number: 5832349
    Abstract: The present ivention provides a toner replenishing container comprising a bag made of a film, and an opening member for opening the bag by tearing it. After the unsealing, a bottom of the bag is completely opened.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: November 3, 1998
    Assignee: Canon Kabshiki Kaisha
    Inventor: Toshiaki Nagashima
  • Patent number: 5749657
    Abstract: A flexible package includes first and second opposed panel sections, a header section having a hanghole, and a tear string. The header section is positioned adjacent the first and second panel sections and encloses a portion of the package. The tear string is enclosed and arranged in the header section to provide hanging support at the hanghole and to tear open the enclosed portion in response to a pulling force at an end of the tear string. A method and apparatus for making the flexible package are also featured.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: May 12, 1998
    Assignee: Reynolds Consumer Products Inc.
    Inventor: Timothy J. May
  • Patent number: 5609420
    Abstract: A package closure for such packages as reclosable plastic bags includes male and female interlocking profiles and a tear bead on one side of a zipper tape film. On the other side of the zipper tape film are two tear containing strips, preferably of ethylene vinyl acetate. In use, the zipper tape film is in a folded condition with male and female profiles interlocked. This places the tear containing strips on opposite sides of the outside of the folded zipper tape film, where they cooperate in serving to seal and bond packaging film to the zipper tape film, and to prevent the tear formed when the package is initially opened from running to the profiles.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: March 11, 1997
    Assignee: Minigrip, Inc.
    Inventor: Andrew J. Palmisano
  • Patent number: 5480230
    Abstract: A packaging arrangement providing greater area for the incorporation of graphics without unduly increasing the package size and for optionally providing a structure for hanging the package without interfering with the ability to gain access to the contents of the package comprising a primary header, a secondary header, a containment section, a tear bead located within said secondary header to assist in opening the packaging arrangement, a recloseable system to permit the packaging arrangement to be reclosed after it has been opened, and optionally a hang hole located in the primary header.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: January 2, 1996
    Assignee: Reynolds Consumer Products Inc.
    Inventor: Timothy J. May
  • Patent number: 5465436
    Abstract: The present invention teaches a disposable hydrotherapy tank liner formed of a fluid impervious sheet material. The liner is secured to the upper rim of a hydrotherapy tank by means of any suitable fastener such as a plurality of clips. The liner is adapted to occupy the interior of the tank and serves to isolate the interior surface of the tank from contact with hydrotherapy fluids. The liner utilizes a pull strip or rip cord assembly to open a liner drain hole so that the therapist may avoid contact with the hydrotherapy fluids. Further, an adhesive applied to the exterior of the liner and surrounding the liner drain hole removably secures the liner to the bottom of the tank adjacent the tank drain hole to aid in preventing fluids from contacting the floor of the tank during draining.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: November 14, 1995
    Inventor: Joel N. Bleicher
  • Patent number: 5461845
    Abstract: A reclosable bag and plastic film and method for making the bag. The bag has a reclosable fastener connected to a single wall of the bag, and the film has a reclosable fastener connected to one side thereof which does not require attachment to any other portion of the film when making a bag. The fastener has a tamper-proof member attached thereto to indicate if the bag has been previously opened. The method includes providing a roll of film with attached fasteners, unwinding the film, forming it into a tube, and sealing the tube to form a bag.
    Type: Grant
    Filed: July 12, 1994
    Date of Patent: October 31, 1995
    Inventor: James W. Yeager
  • Patent number: 5375930
    Abstract: The easily openable synthetic resin bag substantially comprises a) a bag body having in an overlapped state front and rear walls of substantially rectangular shape, and a bottom wall interposed between the lower ends of the front and rear walls and having opposite side edges folded down in an inverted V-shape, and b) a tear string heat sealed on the inner side of the rear wall along an opening line at the upper end of the bag body and having opposite end portions thereof heat sealed in gripped state between corresponding portions of the lateral marginal seal portions of the bag body; the bag body having a width gradually broadened in a tapered fashion from the upper to lower end thereof. Accordingly, when the bag body is packed with a filling material and undergoes reductions in width in bag portions packed with the filling material, such bag portions still have a width which substantially equivalent to or which is not markedly smaller than the width of the unfilled upper bag portions.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: December 27, 1994
    Inventor: Kanari Tani
  • Patent number: 5215380
    Abstract: A method and an apparatus for applying a reclosable profile element and a tear strip element to a packaging film is disclosed. Packaging film is formed into a tubular form about a forming tube. The tubular shaped packaging film is advanced along the length of the forming tube and over a product fill tube having an outer perimeter less than the outer perimeter of the forming tube. The packaging film is deformed to conform to the outer perimeter of the product fill tube. Excess packaging film, made available due to the differences in outer perimeters of the forming tube and product fill tube, is formed into a loop. A reclosable profile element is guided into the loop and adhered to the inner surface of the loop. A tear strip is also provided which may be adhered to the packaging film prior to said film into a tubular shape about said forming tube, or may be guided into the loop of said film.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: June 1, 1993
    Assignee: Reynolds Consumer Products, Inc.
    Inventors: Richard G. Custer, Richard R. Kosiorek, Michael P. Kolosoo, Mladomir Tomic
  • Patent number: 5186543
    Abstract: An easy-open container includes guide strips to limit tearing to areas adjacent to the intended line of tearing with a tear strip. The guide strips protect zipper elements and bag walls from distortion or tearing due to deviating tear lines. In a second embodiment, the guide strips are included with one or more tear strips on a membrane which may be attached to a container.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: February 16, 1993
    Assignee: Illinois Tool Works Inc.
    Inventor: Gene A. Cochran
  • Patent number: 5127065
    Abstract: An opening device for flexible packaging is provided to concentrate tearing forces and provide increased tearing leverage, facilitating the opening of the packaging without the need for a sharp object to initiate the tear, the opening device having first and second wings spaced apart from one another at a narrow distance and joined at a proximal end by an integral web, which acts as a fulcrum for each of the wings as they are rotated to initiate the tear. The opening device is securely fastened to a peripheral edge of the package and a predetermined portion of the first and second wings extend outwardly away from the peripheral edge, the wings serving as gripping surfaces which are rotated apart from one another in initiating the tear in the package.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: June 30, 1992
    Inventor: Steven E. Wade
  • Patent number: 5116140
    Abstract: An easy-to-open synthetic resin bag comprises (a) a bag body substantially consisting of a pair of laminated walls made of synthetic resin films, the peripheries of the laminated walls being heat-sealed to form a sealed border region while defining an unsealed storing space within the sealed border region, (b) a tear string which is heat sealed along an imaginary opening line on the inside of one of the laminated walls, the tear string having both ends thereof heat sealed in a sandwiched condition on the corresponding portion of the sealed border region, (c) a pulling tab formed by cutting a part of one side portion of the sealed border region which corresponds to one end of the tear string, the pulling tab being tearable from the bag body integrally with the tear string, and (d) a tear string retaining portion comprising a transverse opening which is formed by cutting off a part of the other side portion of the sealed border region and a pair of inside and outside heat sealed portions which are located at bo
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: May 26, 1992
    Inventor: Kazuyoshi Hirashima
  • Patent number: 5094863
    Abstract: A food packaging material suitable for a variety of food service applications, including fast food restaurants is provided. The packaging is preferably formed from a flexible laminate sheet that includes at least one moisture impervious layer and has been formed into a receptacle having a shape suitable for enclosing and sealing fast food sandwiches and the like. Attached to the sheet is a length of rip cord having at least one free end that can be grasped and pulled by the consumer to tear the laminate sheet, thereby opening the sealed food-containing receptacle. The rip cord can be attached so that it causes one portion of the receptacle to be partially or completely separated from a remaining receptacle portion. The separated portion of the receptacle can be folded out of the way or discarded, and the remaining receptacle portion used to enclose the food product to form a convenient pouch for protecting the consumer's hands while holding the food product.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: March 10, 1992
    Assignee: James River Corporation of Virginia
    Inventor: Dawn M. Vandenburg