Stress Relief Patents (Class 383/903)
  • Patent number: 8882737
    Abstract: A self standing bag having two side wall sheets and a bottom sheet. To flatten the bag, the bottom sheet is sandwiched between the two side wall sheets and symmetrically folded along a line parallel to its bottom edge, separating the bag into a four-layer part and a two-layer part. In the two-layer part, the bag includes first sloped sealing lines extending between a first two points on the top edges of the side wall sheets and spaced from the vertical side wall edges by a first distance, to a second two points spaced from the vertical edges of the side wall sheets by a second distance less than the first distance. The four-layer part includes second sloped sealing lines extending between the second two points and a third two points on the bottom edges of the side wall sheets.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: November 11, 2014
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Thomas Graf, Paul Gastauer, Philippe Laffay, Francois Dumont D'Ayot, Pascal Lengrand, Bertrand Thibault
  • Patent number: 8876382
    Abstract: The plastic bag with a hem and draw tape may include flexible thermoplastic sidewalls that have a network pattern imparted onto them across the side seams. In one embodiment, the network pattern is below the hem seal. In another embodiment, the network pattern covers the hem seal. The bag may also include a ribbed pattern below the network pattern. The network pattern may be continuous or discontinuous.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: November 4, 2014
    Assignee: The Glad Products Company
    Inventors: Kyle R. Wilcoxen, Robert W. Fraser
  • Patent number: 8794835
    Abstract: The plastic bag with a hem and draw tape may include flexible thermoplastic sidewalls that have a network pattern imparted onto them across the side seams. In one embodiment, the network pattern is below the hem seal. In another embodiment, the network pattern covers the hem seal. The bag may also include a ribbed pattern below the network pattern. The network pattern may be continuous or discontinuous.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: August 5, 2014
    Assignee: The Glad Products Company
    Inventors: Kyle R. Wilcoxen, Robert W. Fraser
  • Patent number: 8714820
    Abstract: Flexible apparatus for transporting bulk products within containers having liners with bottom panels, two sidewalls, and a back panel with one lateral receiving member across the back panel and having first, second, and third sheet members partially attached to the two sidewalls and the back panel for creating a first, second, and third pair of diagonal sections suspended between the two sidewalls and the back panel and for creating planar overlapping spaced apart sections of first, second, and third sheet member across the back panel for bulge control in back panel and having one support bar with securing members for positioning and securing the first, second, and third sheet members and their diagonal sections and back panel into vertical and tensioned positions to container.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 6, 2014
    Assignee: D & BD Marketing LLC
    Inventors: Oswaldo Mino, Pablo Llopez-Miquel
  • Patent number: 8678652
    Abstract: A bulk container bag of a flexible fabric has an essentially cubic configuration wherein vertically extending baffles are provided in the interior corners of the bags to permit the bags to better retain their cubic configuration and to improve stability when filled. The baffles have slits defining flaps, alternatively, apertures and flaps, so that the loose granular material captures the flaps after it is filled in the bulk container bag. A method of filling the bag with granular materials is also provided.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: March 25, 2014
    Assignee: Bulk Lift International, Incorporated
    Inventor: David Nattrass
  • Patent number: 8449187
    Abstract: A fluid containing bag according to the invention includes a bag main body which is constituted by front and rear two sheets and an entire periphery of which is hermetically sealed except one portion, an inlet/outlet spout one end side of which is connected to the one portion and other end side of which is extended to outside of the bag main body, means for closing an inlet/outlet port of the inlet/outlet spout, and a reinforcing tape attached to a portion or an entire periphery of an inner peripheral face of the bag main body connecting side base portion of the inlet/outlet spout.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: May 28, 2013
    Assignee: World Water Bag Co., Ltd.
    Inventors: Toshio Nakamura, Tsuneo Nakamura
  • Patent number: 8444320
    Abstract: A tie bag for storing refuse or garbage includes an undulating top edge defining an opening to the bag. The top edge may include two flaps and two valleys. In one embodiment, the valley may include a flat portion at the bottom of the valley. The flaps may be tied together to at least partially close the bag. The bag further may include a first seam that intersects the flat portion of the valley. The flat portion reduces the possibility of tearing the seam. In another embodiment, the valley may include a slit. In an additional embodiment, the valley may include two secondary valleys and a center valley. In another embodiment, the seam may intersect the top edge at a point other than the lowest point in the valley.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 21, 2013
    Assignee: The Glad Products Company
    Inventors: John Rusnak, Calvin Ellis, Jeff Deel, John Augustyn
  • Patent number: 8272782
    Abstract: A plastic bag includes a plastic bag body with 4-layer gussets on two sides and 2-layer film in the middle. The plastic bag body is provided with a curved hot-seal line near a bottom edge of the bag body. The curved hot seal line turns upward on two sides and is recessed in the middle. Since plastic bags with the structure referred to herein eliminate a stress concentration at a bottom hot-seal location, such plastic bags have increased load-bearing capacity.
    Type: Grant
    Filed: February 6, 2010
    Date of Patent: September 25, 2012
    Inventor: Hon Sing Chum
  • Patent number: 8083412
    Abstract: A method and apparatus for transporting bulk products is shown. At least one example of an apparatus for transporting bulk products as disclosed herein comprises the following: a liner having a top panel, a bottom panel, two sidewalls, a front panel, and a back panel; a first strap, wherein the first strap is partially attached to each of the sidewalls and to the back panel so that the first strap has a first pair of diagonal sections, said first pair of diagonal sections comprising a first diagonal section suspended between a first sidewall and the back panel and a second diagonal section suspended between a second sidewall and the back panel; and a second strap, wherein the second strap is partially attached to each of the sidewalls and to the back panel, wherein at least one overlapping region of the second strap overlaps an overlapping region of the first strap.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: December 27, 2011
    Inventors: Oswaldo Mino, Pablo Llopez-Miguel
  • Patent number: 7794148
    Abstract: A bulk bag for dense materials includes side walls seamed together end-to-end to form a rectangular enclosure and at least a bottom wall secured to the lower ends of the side walls. Baffles are secured in the side wall seams and extend diagonally across the interior of the bulk bag to maintain the bulk bag in a rectangular cross-sectional configuration when filled with dense materials.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: September 14, 2010
    Assignee: Super Sack Mfg. Corp.
    Inventors: Norwin C. Derby, Craig Alan Nickell
  • Patent number: 7780354
    Abstract: A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: August 24, 2010
    Assignee: Orihiro Co., Ltd.
    Inventors: Akira Funaki, Yuji Fukushima, Katsuji Iizuka, Orihiro Tsuruta
  • Patent number: 7753588
    Abstract: A tabless, self-opening T-shirt-styled thermoplastic bag is provided having a handle, stress relief notch, and mounting tab structure for providing a wide-opening bag mouth and a bag having high weight carrying capacity. Handles have a narrow upper portion, a wide middle portion and a narrow lower portion. Handle mounting apertures are provided in the wide middle portion, which projects inwardly above the mouth of the bag. The handle mounting apertures are formed by a blade having an elongate section that is bent to form an obtuse angle. The handle mounting aperture has a sufficient width for accommodating arms of a dispensing rack and a height about three times as great as the width. The bag has a central mounting tab extending above the mouth of the bag and between the handles. A stress relief notch having a reasonably tight radius of curvature is provided between each handle and the mounting tab.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: July 13, 2010
    Assignee: Superbag Corp.
    Inventor: Jacobo Bazbaz
  • Patent number: 7687134
    Abstract: Tear resistant flexible polymeric film having at least one embossed zone, the at least one embossed zone comprising a plurality of adjacent embossed patterns (8) through the film material, each embossed pattern (8) comprising either at least one spiral embossed rib formation (12) having a plurality of turns spaced from each other by corresponding spiral less-embossed film material (20) or an array of concentric embossed rib formations (12) spaced from each other by corresponding concentric less-embossed film material (20), wherein the embossed rib formation or formations (12) are formed by stretching the film material thereof relative to said less-embossed film material (20). The film may be in the form of a bag, particularly a thin-walled disposable bag, in which the embossed patterns (8) increase the tear resistance of the bag. The embossed patterns may extend across the entire embossed zone.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: March 30, 2010
    Assignee: International Consolidated Business Pty Ltd.
    Inventor: Phillip Withers
  • Publication number: 20080101730
    Abstract: An improved bulk bag with an upper portion of the sidewalls that is sloped inward from vertical so that when the fabric is stretched upward in the lifting process, thereby creating tension in the vertical fabric, the tension will be maintained after the bag is no longer in a lift position, as the fabric cannot slide back down around the product due to the restricted size of the fabric and such tension provides stronger restrictions to product movement to provide increased stability.
    Type: Application
    Filed: April 20, 2006
    Publication date: May 1, 2008
    Inventors: Daniel R. Schnaars, Jean-Andre' Beard
  • Patent number: 7213970
    Abstract: A soft shell, flexible storage tank is provided, including corners of an improved configuration adapted to resist leaks. The walls of the tank and the corners are relatively more rounded and larger in radius than those of conventional flexible tanks. The walls and the improved corners act together to resist leaks. The rounded corners tend to reduce the effective pressure in the tank walls by loading the seams predominantly in shearing stress when the tank is filled with a liquid. The rounded corners are developed as panels, which are thermally bonded to produce secure and reliable liquid-tight seams. Each of the panels is bonded by lapped seams to others of the panels. Each of the rounded corners includes a generally triangular corner that is bonded to at least three other panels. In effect, the flexible storage tank functions as a pressure vessel, which tends to resist leakage.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: May 8, 2007
    Assignee: MPC Containment Systems, Ltd.
    Inventors: Edward Reicin, Jack Moreland
  • Patent number: 7036986
    Abstract: At least one branched chamber extends and diverges from a side wall of a pouch body. The branched chamber has an optional pouring spout at its distal end to permit the removal of the contents of the pouch. A readily unsealable seal member is optionally included to partition the branched chamber from the pouch body, thus providing a pouch wherein two or more different materials are mixed prior to removal from the pouch. A pouch having this structure provides excellent rupture protection of the readily unsealable seal member caused from, for example, handling, shipping, or dropping of the pouch.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: May 2, 2006
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Naoto Matsuda, Yasushi Hatano, Kikuo Matsuoka, Takashi Kuriki
  • Patent number: 6921204
    Abstract: An internal brace for use in association with a flexible container having at least one wall defining an inner cavity. The internal brace comprises a body and an attachment assembly. The body includes a first surface, a second surface, opposite the first surface and opposing ends. The attachment assembly is associated with the opposing ends of the body. The attachment assembly facilitates the attachment of the opposing ends of the body to the at least one wall within the inner cavity.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: July 26, 2005
    Assignee: Scholle Corporation
    Inventors: Simon P. Edwards, Benjamin A. Gianneschi, Nancy Lu, Joe Hsu
  • Patent number: 6913388
    Abstract: A flexible container formed by sealing at least two webs of material with respect to each other to form a void between the webs. Each web preferably has at least two layers. A first web has a first thickness, and a closure area. In at least a portion of the closure area, the first web has a second thickness which is less than the first thickness. A void opening formed in the first web at the closure area provides access to the void. A layer of adhesive is applied to the first web at the closure area to provide for a leak-proof seal at the closure area when the flexible container is folded with respect to the void opening.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: July 5, 2005
    Assignee: Vonco Products, Inc.
    Inventor: Louis L. Laske
  • Patent number: 6779922
    Abstract: A sealable bag for storing merchandise includes a body having a pocket that is adapted to receive the merchandise. The pocket has an opening through which merchandise is placed into the pocket. The body has a pair of flanges disposed along the sides of the body. The body has a neck with the opening of the pocket being disposed at the neck of the body. The neck has a sealing area. The bag includes a pair of stress relief notches disposed in the flanges intermediate the sealing area and the opening of the pocket. Each stress relief notch extends into the neck of the body. The stress relief notches prevent the sealing area from becoming wrinkled while the bag is being sealed with automated equipment thus allowing a clean, unwrinkled seal to be formed in the bag.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: August 24, 2004
    Assignee: Gates Automation, Inc.
    Inventor: Anthony H. Gates
  • Patent number: 6767317
    Abstract: A plastic T-shirt bag comprises an extruded plastic tubular form having side gussets and a seal line at the bottom of the bag. The junctions of the inner folds of the gussets and the seal line are the weakest areas of the bottom of the bag. A reinforcement tape extends across both weakened areas and takes up the forces applied to them when the bag is loaded.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: July 27, 2004
    Inventor: Ebrahim Simhaee
  • Patent number: 6742930
    Abstract: A flexible container for liquids including an outer shell, an inner liner and an intermediate structure in which the intermediate liner is coupled to the outer shell to maintain a cross-sectional profile and the volume of the inner liner is greater than the enclosed volume of the intermediate structure. Liquids are loaded into a flexible container wherein the container is lifted by straps so that the container hangs freely, the container is filled with the liquid, the filling tube is sealed, the sealed tube is placed between the outer shell and stabilizing straps on the outside surface of the outer shell and the flexible container is then rested on a surface, trapping the filling tube between the outside surface and strap so that the container is securely sealed.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: June 1, 2004
    Inventor: Carlos J. D. Matias
  • Patent number: 6659644
    Abstract: A bag for holding hot food products is provided with pairs of arcuate vents such that hot moist air may escape from the bag to keep food held within fresh. The arcuate vent pairs are placed in certain areas of the body of the bag such that structural strength in the bag is not lost yet hot moist air is allowed to escape. In a preferred embodiment, the bag is made of plastic and has handles defined in the front and rear panels of the bag, such that the gussets, or sides, of the bag are not perforated by handles and the bag presents a neat appearance when it is open and full of product.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: December 9, 2003
    Assignee: TC Manufacturing Inc., Co.
    Inventor: Terry D. Gebhardt
  • Patent number: 6655837
    Abstract: At least one branched chamber extends and diverges from a side wall of a pouch body. The branched chamber has an optional pouring spout at its distal end to permit the removal of the contents of the pouch. A readily unsealable seal member is optionally included to partition the branched chamber from the pouch body, thus providing a pouch wherein two or more different materials are mixed prior to removal from the pouch. A pouch having this structure provides excellent rupture protection of the readily unsealable seal member caused from, for example, handling, shipping, or dropping of the pouch.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: December 2, 2003
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Naoto Matsuda, Yasushi Hatano, Kikuo Matsuoka, Takashi Kuriki
  • Publication number: 20030103696
    Abstract: There is provided a resealable flap or label adapted to be placed in sealing engagement with an orifice of a flexible container. The resealable flap comprises a body having an interior portion and a pair of indented side edges. The flap has at least one hook cut extending from one of the pair of side edges to the interior portion. The body has an adhesive portion that removable connects the body over the orifice. The resealable flap or label has perforations for the at least one hook cut, which allows application of the flap by a blow on type applicator.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 5, 2003
    Applicant: Playtex Products, Inc.
    Inventors: Joel Faaborg, Joel Slank, Joseph M. Everard
  • Patent number: 6565256
    Abstract: A bulk bag for dense materials includes side walls seamed together end-to-end to form a rectangular enclosure and at least a bottom wall secured to the lower ends of the side walls. Baffles are secured in the side wall seams and extend diagonally across the interior of the bulk bag to maintain the bulk bag in a rectangular cross-sectional configuration when filled with dense materials.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: May 20, 2003
    Assignee: Super Sack Mfg. Corp.
    Inventors: Norwin C. Derby, Craig Alan Nickell
  • Publication number: 20030068102
    Abstract: At least one branched chamber extends and diverges from a side wall of a pouch body. The branched chamber has an optional pouring spout at its distal end to permit the removal of the contents of the pouch. A readily unsealable seal member is optionally included to partition the branched chamber from the pouch body, thus providing a pouch wherein two or more different materials are mixed prior to removal from the pouch. A pouch having this structure provides excellent rupture protection of the readily unsealable seal member caused from, for example, handling, shipping, or dropping of the pouch.
    Type: Application
    Filed: November 8, 2002
    Publication date: April 10, 2003
    Applicant: Toyo Seikan Kaisha, Ltd.
    Inventors: Naoto Matsuda, Yasushi Hatano, Kikuo Matsuoka, Takashi Kuriki
  • Patent number: 6491434
    Abstract: A flexible bulk shipping container having supporting side beams positioned vertically about the side wall panel of the container. The side beams are made of a rigid material and act to distribute lateral bulge forces evenly throughout the container to prevent bulging.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: December 10, 2002
    Inventor: Harold F. Hafer
  • Patent number: 6461041
    Abstract: A plastic T-shirt bag comprises an extruded plastic tubular form having side gussets and a seal line at the bottom of the bag. The junctions of the inner folds of the gussets and the seal line are the weakest areas of the bottom of the bag. A reinforcement tape extends across both weakened areas and takes up the forces applied to them when the bag is loaded.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: October 8, 2002
    Inventor: Ebrahim Simhaee
  • Patent number: 6416222
    Abstract: A flexible bulk shipping container having supporting side beams positioned vertically about the side wall panel of the container. The side beams are made of a rigid material and act to distribute lateral bulge forces evenly throughout the container to prevent bulging.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: July 9, 2002
    Inventor: Harold F. Hafer
  • Patent number: 6394652
    Abstract: The present invention provides a flexible bag comprising at least one sheet of flexible sheet material assembled to form a semi-enclosed container having an opening defined by a periphery. The opening defines an opening plane, and bag is expandable in response to forces exerted by contents within the bag to provide an increase in volume of the bag such that said the accommodates the contents placed therein.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 28, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Eric Walter Meyer, John Thomas Cooper, Daniel Raymond Cerone, Charles John Berg, Jr., Barry Jay Anderson, Beverly Julian Jackson
  • Patent number: 6331077
    Abstract: A bulk bag for dense materials includes side panels seamed together to form side walls having first and second ends and at least one end wall secured to the first ends of the side walls with the seams connecting the side panels to form the side walls located at points substantially spaced from the adjacent corners of the end wall. Four baffles extend across the corners of the end wall and are secured to the side panels. One or more additional baffles are secured in the side wall seams and extend entirely across the interior of the bulk bag to maintain the bulk bag in a rectangular cross-sectional configuration when filled with dense materials.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: December 18, 2001
    Assignee: Super Sack Mfg. Corp.
    Inventor: Craig A. Nickell
  • Patent number: 6328470
    Abstract: A baffle-type bulk bag is reinforced with triangular support members positioned in the triangular corners of the bulk bag to facilitate stacking. The bulk bag may include double layer side walls having support panels received therein.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: December 11, 2001
    Assignee: B.A.G. Corp.
    Inventors: Bobby Glenn Brown, Bradley Matthew Eisenbarth, Craig Alan Nickell
  • Patent number: 6318893
    Abstract: A sealable bag for storing merchandise includes a body having a pocket that is adapted to receive the merchandise. The pocket has an opening through which merchandise is placed into the pocket. The body has a pair of flanges disposed along the sides of the body. The body has a neck with the opening of the pocket being disposed at the neck of the body. The neck has a sealing area. The bag includes a pair of stress relief notches disposed in the flanges intermediate the sealing area and the opening of the pocket. The stress relief notches prevent the sealing area from becoming wrinkled while the bag is being sealed with automated equipment thus allowing a clean, unwrinkled seal to be formed in the bag.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: November 20, 2001
    Assignee: Gates Automation, Inc.
    Inventor: Anthony H. Gates
  • Publication number: 20010038723
    Abstract: A sealable bag for storing merchandise includes a body having a pocket that is adapted to receive the merchandise. The pocket has an opening through which merchandise is placed into the pocket. The body has a pair of flanges disposed along the sides of the body. The body has a neck with the opening of the pocket being disposed at the neck of the body. The neck has a sealing area. The bag includes a pair of stress relief notches disposed in the flanges intermediate the sealing area and the opening of the pocket. Each stress relief notch extends into the neck of the body. The stress relief notches prevent the sealing area from becoming wrinkled while the bag is being sealed with automated equipment thus allowing a clean, unwrinkled seal to be formed in the bag.
    Type: Application
    Filed: January 18, 2001
    Publication date: November 8, 2001
    Inventor: Anthony H. Gates
  • Patent number: 6287003
    Abstract: A flexible bulk shipping container having supporting side beams positioned vertically about the side wall panel of the container. The side beams are made of a rigid material and act to distribute lateral bulge forces evenly throughout the container to prevent bulging.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: September 11, 2001
    Inventor: Harold F. Hafer
  • Publication number: 20010004079
    Abstract: A pleated neckdown bag for lining a receptacle is disclosed wherein the bag is made of a flexible plastic film. The disclosed bag has one or more pleat portions (18) fixed at points around the mouth portion (26) of the bag to reduce the circumference of the mouth portion relative to the circumference of the body portion (14). The reduced circumference mouth portion of the neckdown bag can be fitted over a supporting receptacle. The top portion (12) of the bag is thereby more securely held to the support, and the mouth portion is more securely held in an open state, since the narrowed mouth portion of the bag can better engage a support such as the rim of a waste bin. Bag embodiments having flat and flat rectangular constructions, convenient for manufacture, storage, shipping, and dispensing, are also disclosed. Also disclosed is a tabbed neckdown bag embodiment with a tab (52) modifying means to advantageously modify stress and strain at and near the conjunction of a seam and mouth portion of a neckdown bag.
    Type: Application
    Filed: February 5, 2001
    Publication date: June 21, 2001
    Inventor: Michael A. Metzger
  • Patent number: 6231232
    Abstract: A bag including first and second walls having joined first and second opposed side edges, a top end edge, a bottom end edge, and two spaced-apart seal lines adjacent the top end edge of the bag, the improvement defined of a tear-resistant, bag-supporting handle defined with the two spaced-apart seal lines. The handle includes a hand-insertion slit defined of a middle slit portion parallel to the top end edge and the bottom end edge of the bag and perpendicular to the side edges of the bag, and two arcuate end slit portions, a first end slit portion situated at a first end of the middle slit portion proximate to the first side edge of the bag and a second end slit portion situated at a second end of said middle slit portion proximate to the second side edge of the bag. The end slit portions each define an arc greater than or equal to 180 degrees and extend greater than or equal to 0 degrees and less than or equal to 45 degrees of arc below the middle slit portion toward the bottom end edge of the bag.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: May 15, 2001
    Assignee: Rex International Incorporated
    Inventor: Charles J. Warr
  • Patent number: 6220755
    Abstract: A baffle-type bulk bag is reinforced with triangular support members positioned in the triangular corners of the bulk bag to facilitate stacking. The bulk bag may include double layer side walls having support panels received therein.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: April 24, 2001
    Assignee: B.A.G. Corp.
    Inventors: Bobby Glenn Brown, Bradley Matthew Eisenbarth, Craig Alan Nickell
  • Patent number: 6210037
    Abstract: A removable one-piece, puncture resistant, flexible inner liner insert for use in a variety of backpacks, soft body portfolios, carrying bags and the like. The liner insert has an adjustable variably sized bottom portion having at least four side regions, at least four stress relief joints, a front flap attached to the first side region of said bottom portion, a back flap attached to the second side region of the bottom portion, and a first side flap and a second side flap attached to the third and fourth side regions of the bottom portion respectively. Additionally, a plurality of size adjusting perforations are located adjacent each of the four joints and run inwardly, at an approximately 45° angle, towards the center of the bottom portion. The size adjusting perforations enable an individual to easily adjust the size of the bottom portion of the liner insert such that it substantially corresponds to the size of the bottom region of the back pack that the liner insert is to be installed within.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: April 3, 2001
    Inventor: Daniel M. Brandon, Jr.
  • Patent number: 6135637
    Abstract: A plastic trash sack having series of vertical air slots made up of fine perforations on upper portions of both sack walls that break open from stress of compression to allow excess air inside sack to discharge to outside atmosphere. The discharge of air facilitates sack to compact upon its self and flexible trash contents within, further minimizing sack volume and continually maximizing receptacle holding capacity for the duration which compression is generated by weight of other sacks or applied by persons.
    Type: Grant
    Filed: November 26, 1999
    Date of Patent: October 24, 2000
    Assignee: Daniel S. Y. Kim
    Inventor: Daniel S. Y. Kim
  • Patent number: 6126317
    Abstract: A container in which an opening is formed by tearing includes a sidewall having a primary weakened line extending a length between opposed linear ends thereof, tearing along the primary weakened line forming an opening in the sidewall; and two secondary weakened lines formed in said sidewall, each said secondary weakened line including a portion thereof disposed in spaced, partially overlapping parallel relation to a respective said linear end of said primary weakened line, said portion of each said secondary weakened line having a length substantially less than said length between said ends of said primary weakened line. The secondary weakened lines each consist of a single elongated slit. Alternatively, the secondary weakened lines are substantially U-shaped; L-shaped; T-shaped; I-shaped; C-shape; or spirally shaped and may merge with the opposed ends of the primary weakened line. A web of material for forming bags on a form fill machine includes these primary weakened lines and secondary weakened lines.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: October 3, 2000
    Assignee: Pac One, Inc.
    Inventors: Richard Floyd Anderson, Michael A. Bullock, Mark Steele, Robert R. Shankle
  • Patent number: 6109785
    Abstract: A bulk bag has side walls and a bottom in which a liner is inserted made of a flexible plastic material. The liner has a bottom and a plurality of sides and at least one frame member extending inwardly from the sides substantially along a plane oriented substantially parallel with the bottom.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: August 29, 2000
    Assignee: Grayling Industries, Inc.
    Inventors: Kurt D. Ross, Randy R. Sullinger
  • Patent number: 6109786
    Abstract: A flexible bulk shipping container having supporting side beams positioned vertically about the side wall panel of the container. The side beams are made of a rigid material and act to distribute lateral bulge forces evenly throughout the container to prevent bulging.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: August 29, 2000
    Inventors: Harold Franklin Hafer, Peter Roman Apostoluk
  • Patent number: 6065871
    Abstract: A bag including first and second walls having joined first and second opposed side edges, a top end edge, a bottom end edge, and two spaced-apart seal lines adjacent the top end edge of the bag, the improvement defined of a tear-resistant, bag-supporting handle defined with the two spaced-apart seal lines. The handle includes a hand-insertion slit defined of a middle slit portion parallel to the top end edge and the bottom end edge of the bag and perpendicular to the side edges of the bag, and two arcuate end slit portions, a first end slit portion situated at a first end of the middle slit portion proximate to the first side edge of the bag and a second end slit portion situated at a second end of said middle slit portion proximate to the second side edge of the bag. The end slit portions each define an arc greater than or equal to 180 degrees and extend greater than or equal to 0 degrees and less than or equal to 45 degrees of arc below the middle slit portion toward the bottom end edge of the bag.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 23, 2000
    Assignee: Rex International Incorporated
    Inventor: Charles J. Warr
  • Patent number: 6056440
    Abstract: A membrane having dimensions slightly larger than the dimensions of a bulk lift bag is inserted into the bag, so that the membrane may expand as the bag is filled without tearing. The membrane may be secured to the bag at a flange, without perforating the membrane.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: May 2, 2000
    Inventor: Peter J. Nattrass
  • Patent number: 6004035
    Abstract: A flexible bulk shipping container having supporting side beams positioned vertically about the side wall panel of the container. The side beams are made of a rigid material and act to distribute lateral bulge forces evenly throughout the container to prevent bulging.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: December 21, 1999
    Inventors: Harold Franklin Hafer, Peter Roman Apostoluk
  • Patent number: 5971613
    Abstract: A bag construction includes first and second opposed panel sections. Each of the panel sections have first and second opposite side edges. The panel sections are secured to one another along at least a portion of the first and second opposite side edges by first and second side seals, to define a bag construction interior. The first and second side seals each have an inner edge portion adjacent to the bag construction interior. The first side seal inner edge portion has at least one non-linear edge section extending over a part of the first side seal inner edge portion. The non-linear edge may include an edge with a plurality of spaced inwardly directed projections, or an edge with curved portions, or an undulated edge. The seals may be used in a variety of packaging arrangements, and help to provide an arrangement which will stand upright when filled or at least partially filled with material.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: October 26, 1999
    Assignee: Kapak Corp.
    Inventor: Gary M. Bell
  • Patent number: 5958482
    Abstract: A flexible paper popcorn package in the form of an easily expandable, nontrapping bag (18) is disclosed including a bottom wall (20) and a top wall (22) interconnected together adjacent their circular outer peripheries (20a, 22a) by first and second interconnection portions. The top wall (22) is formed by first and second wall portions (22b, 22c) interconnected together by a peelable closure seal (28).
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: September 28, 1999
    Assignee: General Mills, Inc.
    Inventor: Randal J. Monforton
  • Patent number: 5951166
    Abstract: A carrier-bag for plate-shaped articles which a rectangular containing part made of a film folded in a W shape and having a structure in which each pair of an outer film and an inner film of the W-shaped film is separately heat sealed together at both side edges of the containing part, and a pair of holding parts formed by upward extension of the outer films of the W-shaped film and having finger holes; and a process for producing the carrier-bag which comprises forming a belt-shaped film having W-shaped gazette foldings at both side edges from a long tubular plastic film, inserting a heat insulating receiving plate into the central part of each W-shaped gazette folding of the belt-shaped film and pushing heat sealing blades to the receiving plate from both sides to separately heat seal each pair of an outer film and an inner film of the W-shaped film together, cutting the belt-shaped film to produce pieces having a length corresponding to the width of a carrier-bag, cutting the obtained pieces along the cent
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: September 14, 1999
    Inventor: Masayoshi Matsumoto
  • Patent number: 5935367
    Abstract: An apparatus and method for forming specially-configured handles in a plurality of interconnected plastic bags traveling in a longitudinal direction. The plastic bags are interconnected along transverse lines of weakness spaced at bag-length distances apart. The apparatus and method comprise using a rotary anvil and a rotary cutting die. The rotary anvil has a first axis of rotation. The rotary cutting die is disposed adjacent to the rotary anvil and has a second axis of rotation substantially parallel to the first axis of rotation. The rotary cutting die includes a rotatable cylindrical shaft, a blade shell mounted on the shaft, and a generally W-shaped blade formed on the blade shell. The blade has a base portion and a pair of substantially linear opposing legs, and the base portion has an inverted, V-shaped configuration. The opposing legs extend upwardly relative to the base portion and outwardly relative to each other.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: August 10, 1999
    Assignee: Tenneco Packaging Inc.
    Inventor: Robert E. Hollenbeck