Fold Includes Slit Or Aperture Patents (Class 229/931)
  • Patent number: 8887983
    Abstract: A foldable packaging which may include a liquid-resistant paperboard form that is foldable to provide an attractive stackable container that resists water leakage, can be assembled without fastening hardware and has concealed gussets. The packaging can be folded into overlapping flaps and wings which are folded and interlocked to define a generally trapezoidal packaging which can receive a variety of different pot sizes and types. The die cut pattern forming the packaging can be of a universal shape but formed in a variety of different sizes to accommodate different sized potted plants.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: November 18, 2014
    Assignee: Multi Packaging Solutions, Inc.
    Inventors: Dennis M. Kaltman, Richard C. Thibault, John R. Widener, Carol J. Moore
  • Patent number: 8770468
    Abstract: A folding box for receiving a group of containers includes a cuboid-shaped external packaging made of cardboard. The external packaging has side walls, bottom walls and top walls. The folding box also includes a lining on the inside of the external packaging at least in the corner region between the side walls, top walls and/or bottom walls.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 8, 2014
    Assignee: Graphic Packaging International Europe Netherlands B.V.
    Inventors: Bernard Skolik, Jens Eckermann
  • Patent number: 8740050
    Abstract: A carton for holding a food product can comprise a tray and a lid. The lid can cooperate with the tray to at least partially close the carton. The carton further can comprise a hinge at least partially foldably connecting the lid and the tray. The hinge can comprise a first hinge fold line, a second hinge fold line, and a cut extending between the first hinge fold line and the second hinge fold line. The first hinge fold line and the second hinge fold line are generally aligned along a hinge axis, and the cut comprises a central portion that is generally parallel to the hinge axis and is offset from the hinge axis. Portions of a side panel of the tray are foldably connected to respective portions of a side panel of the lid along the respective first and second hinge fold lines.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 3, 2014
    Assignee: Graphic Packaging International, Inc.
    Inventors: Becky L. Zinck, Jeffrey T. Wright
  • Patent number: 8733622
    Abstract: A blank of sheet material for forming a container is provided. The blank includes a tray panel assembly, a cover panel assembly, a fold line connecting the tray panel assembly and the cover panel assembly, and an anti-buckling mechanism interrupting the fold line. The anti-buckling mechanism includes a series of cuts positioned at least partially below the fold line in the tray panel assembly. The series of cuts extends more than half a length of the fold line. Each cut of the series of cuts is substantially straight. The anti-buckling mechanism further includes an upper cut line defined in the cover panel assembly.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: May 27, 2014
    Assignee: Dopaco, Inc.
    Inventor: Angela Elizabeth Learn
  • Patent number: 8550331
    Abstract: A foldable packaging which may include a liquid-resistant paperboard form that is foldable to provide an attractive stackable container that resists water leakage, can be assembled without fastening hardware and has concealed gussets. The packaging can be folded into overlapping flaps and wings which are folded and interlocked to define a generally trapezoidal packaging which can receive a variety of different pot sizes and types. The packaging may include a handle having an elongated strip, a gripping portion, one or more widened portions adjacent the gripping portion; a bulbous portion and a narrowing head portion.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: October 8, 2013
    Assignee: Multi Packaging Solutions, Inc.
    Inventors: Daniel T. Smith, Eric A. Rosendall, Dennis M. Kaltman, Richard C. Thibault, John R. Widener, Carol J. Moore
  • Patent number: 8365981
    Abstract: A device is disclosed for supporting a second pizza in a rectangular pizza box which contains a first pizza, the pizza box having four corner zones. The device comprises a rectangular platform which is shaped and dimensioned to be received by the pizza box. The platform has at least four tabs which are selectively positionable to a support position which is substantially perpendicular to the platform, The tabs are located on the platform so that when the tabs are placed in the support position and the platform is placed inside the pizza box, at least one tab will rest upon each corner zone. In one embodiment, the platform includes four tabs; in another embodiment the platform includes eight tabs; and, in another embodiment the tabs include side tabs which can be folded to create a U-shaped support.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 5, 2013
    Inventor: Leon Perlsweig
  • Patent number: 8066176
    Abstract: When according to the invention, a container is formed from a sheet-shaped material, and it is punched and scored such that the base (7) and the side members (3, 4, 5, 6) constitute an entity without incisions, cuts and the like, it is possible to achieve a container which is foldable, in that the side members may be folded inwards over the base, and which may be erected to provide a container which, when made of a combustible material, may be disposed of by incineration after use. As the container is completely liquid-tight, it may be used for liquid as well as solid contents.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: November 29, 2011
    Inventor: Elsebeth Bjerg Nielsen
  • Patent number: 8033448
    Abstract: A collapsible insert includes a series of adjacent cells. Each cell may include a support surface capable raised to an elevated position above the bottom of the tray by a pair of legs. Each leg may have a lower portion and an upper portion. The lower portion of each leg extends below the support surface and can rest on the bottom of the tray, and functions to raise the support surface to the elevated position. The upper portion of each leg extends above the support surface and is used to divide each cell and partially constrain food product within a cell while the insert is in the erected position and disposed within a tray.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: October 11, 2011
    Inventors: Bridget Suzanne Breitfeld, Meina Ibrahim, Sophia Yang, Jeffrey T. Wright
  • Patent number: 7959061
    Abstract: A foldable pot cover provides a foldable die cut pattern which can be imprinted on its exterior surfaces with any of a number of designs. The pot cover is formed from a die cut pattern which can be folded into overlapping flaps and tabs which are folded and interlocked to define a generally trapezoidal pot cover which can receive a variety of different pot sizes and types and resists moisture. The die cut pattern forming the pot cover can be of a universal shape but formed in a variety of different sizes to accommodate different sized potted plants.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 14, 2011
    Assignee: Multi Packaging Solutions, Inc.
    Inventors: Dennis M. Kaltman, Richard C. Thibault, John R. Widener, Carol J. Moore
  • Patent number: 7870995
    Abstract: A foldable packaging which may include a liquid-resistant paperboard form that is foldable to provide an attractive stackable container that resists water leakage, can be assembled without fastening hardware and has concealed gussets. The packaging can be folded into overlapping flaps and wings which are folded and interlocked to define a generally trapezoidal packaging which can receive a variety of different pot sizes and types. The die cut pattern forming the packaging can be of a universal shape but formed in a variety of different sizes to accommodate different sized potted plants.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: January 18, 2011
    Assignee: Multi Packaging Solutions
    Inventors: Dennis M. Kaltman, Richard C. Thibault, John R. Widener, Carol J. Moore
  • Patent number: 7681781
    Abstract: An octagonal bulk bin has sidewalls, end walls and diagonal corner panels interposed between adjacent sidewalls and end walls. Bottom flaps are foldably joined to a bottom edge of the sidewalls, end walls, and diagonal corner panels, and gusset panels connect adjacent side edges of the bottom flaps, facilitating set up of the bulk bin and spacing flap cuts from the corners of the bin to minimize or eliminate initiation of tears in the vertical corners of the bin. A plastic pallet tray has an upstanding lip around its periphery, shaped and sized to closely receive the bottom end of the octagonal bin to reinforce the bottom end and facilitate handling of the bin.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: March 23, 2010
    Assignee: International Paper Company
    Inventor: Mark A. Wisecarver
  • Patent number: 7500594
    Abstract: A blank for producing a carton and a carton erected from the blank wherein two 180° fold lines of each fold-in panel in the blank and carton extend from a point on a second end edge of such panel substantially midway between first and second side edges thereof to respective ones of points of the intersections of a first end edge thereof and first and second side edges thereof. Each of these two 180° fold lines of the fold-in panels includes first and second compressed areas extending from respective ends of the 180° fold line, and a C-shaped cut extending between the first and second compressed areas. The fold-in panels form part of continuous closure panels of the carton erected from the blank and enable the continuous closure panels to snap shut upon closure and remain closed in a closed position.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: March 10, 2009
    Assignee: Zsolt Toth
    Inventors: Zsolt Toth, David Christopher DeMent
  • Patent number: 7128257
    Abstract: In a bulk bin having side walls joined to one another at adjacent edges along vertical scores, and bottom flaps joined to bottom edges of the side walls along a flap score, with adjacent flaps separated from one another by a flap slot, a shaped cut is made at the terminal end of the flap slot to redirect stress away from the bottom end of the vertical score and resist initiation of tearing of the vertical score at that point. In one embodiment, the shaped cut is a downwardly open hook shape which terminates in an end pointing laterally away from the vertical score and into the flap. In another embodiment, the shaped cut resembles a modified Greek letter psi (?), with the ends pointing laterally away from the vertical score, and in still another embodiment, the shaped cut is “T” shaped, with the ends of the “T” pointing laterally away from the vertical score.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: October 31, 2006
    Assignee: International Paper Company
    Inventors: Kenneth C. Hyatt, Michael A. Zimmerman
  • Patent number: 6994246
    Abstract: A packaging case which can store a plurality of stored items, enables the stored items to be individually removed, and prevents the occurrence of formation failures. First broken cut lines (perforations) extend from a first flat plate (a side plate) over one flat plate (side plate) neighboring the first flat plate (side plate), and form openings through which the stored items (cartridge containers) can be taken out individually. A second broken cut line (perforation) is formed at a joining portion between the first flat plate (side plate) and the one flat plate (side plate) neighboring the first flat plate (side plate).
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: February 7, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Haruo Ichikawa, Akira Wakabayashi
  • Patent number: 6902103
    Abstract: This invention provides a paperboard with an improved score line, the method for making the improved score line, and the apparatus for imparting the improved score line. The score line makes the process of folding a flat paperboard into a corner an easier and more consistent process. The score is a V-shaped groove fashioned from a bar score line flanked by two parallel slit cut lines. The method for creating the score line includes utilizing different scoring hubs for bar scoring and slit scoring the paperboard. The apparatus for creating the bar score is a four shaft slitter-scorer having multiple shafts in series, wherein each shaft has at least one hub for slit scoring, bar scoring or supporting the paperboard.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: June 7, 2005
    Assignee: International Paper Company
    Inventor: Charles J. Machery
  • Patent number: 6794018
    Abstract: A packaging article constructed in accordance with the invention is provided which is formed and shipped in a flat shape, and which may be converted into a rigid L-shaped, U-shaped, triangular or square/rectangular shipping or storage container for the protection of articles during shipping and storage. The packaging article is constructed using a rigid but pliable member to allow for ease in formation and handling, but after formation into an L-shaped, U-shaped or other shaped shipping or storage container, to produce a rigid storage structure or tube.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Newark Group Industries, Inc.
    Inventor: Richard Clark
  • Patent number: 6676010
    Abstract: A reclosable food container is created from a unitary blank. The container includes a bottom panel, a pair of opposing end panels extending from the first bottom panel, a lateral side panel extending from the first bottom panel, and an opposing side panel extending from the bottom panel on an opposing side to the lateral side panel. The container also includes a plurality of foldable gussets, where each gusset hingedly connects a side panel-end panel pair. The container also includes a lid extending from the lateral side panel, where the lid includes a top panel and a tuck flap. There is a score line between at least one of the lateral side panel and the top panel, and the top panel and the tuck flap. The score line has a ratio of penetration between about 0.1 and about 0.9.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: January 13, 2004
    Assignee: MasterCraft Packaging Corporation
    Inventors: Steven H. Roseth, Gerald Pfieffer
  • Patent number: 6491212
    Abstract: A foldable, stackable box assembly, having a collapsible sleeve component and a foldable container which is insertable into and out of the sleeve by a built-in handle mechanism. The container and sleeve are formed of these folding blanks which, when assembled, create a sturdy, slidable drawer-like box assembly. The front of the container has a compressible handle-like mechanism. It is a characteristic of the container/drawer that the front wall has, extending down from the top, a panel which extends forwardly and terminates short of the bottom of the front of the container/drawer. It is held there by compressible panels, and forms the handle mechanism under which a user can insert hand or finger to pull out the container/drawer from the sleeve.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: December 10, 2002
    Inventor: George G. Militzer
  • Patent number: 6481259
    Abstract: A method for precision bending of a sheet of material (31,41,61,91,231) along a bend line (35,45,62-66,96,235) and the resulting sheet are disclosed. A method includes a step of forming and longitudinally extending slits (33,43,68,92,233) through the sheet of material in axially spaced relation to define bending webs (37,47,71,72,106,237), forming stress reducing structures such as enlarged openings (39,49,69,73) or transversely extending slits (239) at each of adjacent ends of pairs of slits in order to reduce crack propagation across the bending webs. In another aspect, the elongated slits (43,68,92,233) are formed with pairs of longitudinally extending slit segments (51,52;74,76;98,99;127) proximate to and on opposite sides of and substantially parallel to the desired bend line. Longitudinally extending slit segments further are connected by at least one intermediate transversely extending slit segment (53,77,101,128). Sheets of slit material suitable for bending also are disclosed.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: November 19, 2002
    Assignee: Castle, Inc.
    Inventor: Max W. Durney
  • Patent number: 6467682
    Abstract: A blank for erecting a carton has 180° fold lines with a compressed area at each end and a slit joining the compressed areas. A carton is erected by moving the blank in a first direction against a stop to form a first set of 90° folds, holding the blank stationary with a suction while pushing the blank in a second direction to form a second set of 90° folds, erecting the carton. A filled carton is closed by advancing it through the central opening of a V-shaped member to increasingly fold the carton top panels. The closed carton 100 is sealed by advancing it through a second V-shaped member and into contact with a pivotally supported sealing device.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: October 22, 2002
    Inventors: Zsolt Toth, Paul A. Chudy
  • Patent number: 6364199
    Abstract: A container having a plurality of selectable volumes having a bottom portion, two side panels, and two end panels with lateral perforations extending across these panels to allow removal of at least a portion thereof. Each of the two end panels includes hypotenuse creases adapted to allow the two end panels to be selectively inwardly folded to thereby form a top closure for the container with a portion of the two side panels. In addition, the containers may be provided with a vertical perforation, a closure flap with side flaps, and identifiable marking to facilitate identification of the perforations and hypotenuse creases. Moreover, the container may also include a plurality of fold facilitating creases laterally extending across the two side panels and the two end panels, as well as through-holes on the hypotenuse creases.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: April 2, 2002
    Inventor: Harold J. Rose
  • Patent number: 6349875
    Abstract: A clamshell container having an improved hinge for reducing container rear wall buckling when the container is opened and closed is disclosed. The hinge includes first and second offset partial hinge portions, each extending inwardly from one side of the container for less than the full width of the container. The partial hinge portions include fold line portions near the container side walls and parallel slit portions in the central area of the rear wall. A blank for forming the subject container is also disclosed.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: February 26, 2002
    Assignee: Dopaco, Inc.
    Inventor: Simon Whitnell
  • Patent number: 6349876
    Abstract: This invention provides a collapsible box made of corrugated plastic, which has improved hinge line/score line configurations between walls and panels and improved hand holds. A plastic box of this invention preferably has an automatically lockable bottom to facilitate erection of the box, and can be easily collapsed for return shipment and reuse.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: February 26, 2002
    Assignee: Technology Container Corporation
    Inventor: Fred Dowd
  • Patent number: 6311842
    Abstract: At least one corrugated sheet is formed into a corrugated carton has a top panel, a bottom panel, opposite side walls, and opposite end walls. Intermittently spaced slits are formed through the corrugated sheet along fold lines defined between the top panel and the side walls and between the top panel and the end walls. Discrete openings are provided in the top panel to receive individual cans.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: November 6, 2001
    Assignee: Hormel Foods, LLC
    Inventors: Phillip L. Minerich, Jeffrey E. Johnson, Nicholas A. Philips
  • Patent number: 6309039
    Abstract: A container formed from a length of a laminated elongate board having a slot formed along a sufficient length of the board for receiving the edges of a bottom panel. A series of widthwise V-groove cuts are made on the elongate board to form a plurality of folding sections that are continuously joined by the laminate. The slot in the board receives the edges of the bottom panel when the folding sections are folded at the V-grooves to enclose the bottom panel.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: October 30, 2001
    Assignee: GH Canada Inc.
    Inventors: Sung Won Park, Sung Jun Kang
  • Patent number: 6132349
    Abstract: This invention relates to fold line structure of a corrugated fiberboard in which the fold lines have a shape like the letter V, along which the corrugated fiberboard sheet is folded. The fold lines extend perpendicularly to or at an angle other than a right angle to the flutes. Each fold line is composed of cuts, each of which has a predetermined length and penetrates the corrugated fiberboard sheet, and hinge portions, each of which has a predetermined length and is formed by compressing the flutes, with the cuts and the hinge portions aligned in an alternating arrangement. Auxiliary cuts each have a planar shape approximating an one-sided arrow directed toward the adjacent hinge portion, penetrate the corrugated fiberboard sheet, and are formed on opposing sides at both ends of each cut portion.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: October 17, 2000
    Assignees: Hitachi Zosen Corporation, Yokoyama Sankoh Co., Ltd.
    Inventor: Yoshimasa Yokoyama
  • Patent number: 6102280
    Abstract: This invention provides a collapsible box made of corrugated plastic, which has improved hinge line/score line configurations between walls and panels and improved hand holds. A plastic box of this invention preferably has an automatically lockable bottom to facilitate erection of the box, and can be easily collapsed for return shipment and reuse.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: August 15, 2000
    Assignee: Technology Container Corporation
    Inventor: Fred Dowd
  • Patent number: 6102279
    Abstract: This invention provides a collapsible box made of corrugated plastic, which has improved hinge line/score line configurations between walls and panels and improved hand holds. A plastic box of this invention preferably has an automatically lockable bottom to facilitate erection of the box, and can be easily collapsed for return shipment and reuse.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: August 15, 2000
    Assignee: Technology Container Corporation
    Inventor: Fred Dowd
  • Patent number: 6029884
    Abstract: A method box for making a sturdy and light-tight box and a box thereof in accordance with one embodiment of the present invention includes providing a sheet of material with a first pair of opposing edges and a second pair of opposing edges. The sheet of material is grooved to form first and second pairs of grooves. Each of the first pair of grooves is spaced from one of the first pair of edges to form a first pair of sides and each of the second pair of grooves is spaced from one of the second pair of edges to form a second pair of sides. Next, the first and second pairs of sides are folded up along the first and second pair of grooves and then are secured together to form the box.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 29, 2000
    Assignee: Paul T. Trend Corporation
    Inventor: James F. Roeland
  • Patent number: 5944252
    Abstract: A method of making corrugated board having at least one fold region includes the steps of securing at least two sheets of paper liner in complementary facing engagement to create a first multi-layer liner. A first set of ridges of a first corrugated paper medium is secured to the first multi-layer composite liner to create a first single-face web. At least two sheets of paper liner are secured in complementary facing engagement to create a second multi-layer composite liner. A first set of ridges of a second corrugated paper medium is secured to the second multi-layer composite liner to create a second single-face web. A selected portion of the second corrugated paper medium is compressed to create an area to be bent. A second set of ridges of the first corrugated paper medium is secured to the second multi-layer composite liner. Adhesive is applied to the second set of ridges of the second corrugated paper medium, except for the compressed selected portion.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: August 31, 1999
    Assignee: Connelly Containers, Inc.
    Inventors: Thomas S. Connelly, Michael J. McGinley, Alexander Strachan, III
  • Patent number: 5709913
    Abstract: Compositions, methods, and apparatus for manufacturing sheets having a highly inorganically filled matrix. Suitable inorganically filled mixtures are prepared by mixing together an organic polymer binder, water, one or more aggregate materials, fibers, and optional admixtures in the correct proportions in order to form a sheet which has the desired performance criteria. The inorganically filled mixtures are formed into sheets by first extruding the mixtures and then passing the extruded materials between a set of rollers. The rolled sheets are dried in an accelerated manner to form a substantially hardened sheet, such as by heated rollers and/or a drying chamber. The inorganically filled sheets may have properties substantially similar to sheets presently made from traditional materials like paper, paperboard, polystyrene, plastic, or metal. Such sheets can be cut, rolled, pressed, scored, perforated, folded, and glued to fashion articles from the sheet.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: E. Khashoggi Industries
    Inventors: Per Just Andersen, Simon K. Hodson
  • Patent number: 5692672
    Abstract: An improved end closure arrangement for a paperboard container which, when moved to closed position, will remain in a closed position without springing back to an open position. The closure arrangement includes a pair of outer end closure flaps interconnected by a pair of inner bellows members each of which includes three panel elements. The panel elements are foldably joined to a container end wall and to each other along spaced fold lines and are separated from each other by U-shaped cut lines that enable the container closure flaps, when folded to a closed position, to remain in a closed position without springing back to open position.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: December 2, 1997
    Assignee: Jefferson Smurfit Corporation
    Inventor: Terry W. Hunt
  • Patent number: 5560484
    Abstract: A blank for a sleeve type casing with a cover for receiving a recording medium which is formed by punching out a plastic sheet and folding a punched sheet along ruled lines formed in it, and which has a U-shaped notched portion for finger touch at an edge for forming a part of an opening of the casing, wherein the blank has a cover flap with an insertion flap so that the cover flap covers the opening when the blank is formed into a box-like body and a seam-like cut line having a central portion of a U-shape and side portions extending linearly from both ends of the U-shape central portion so as to extend along the root portion of the cover flap.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: October 1, 1996
    Assignee: TDK Corporation
    Inventors: Maya Tomisawa, Kunihiko Muta
  • Patent number: 5427309
    Abstract: A box is formed of a blank of sheet material wherein a filler is sandwiched between an inner liner and an outer liner. A pair of V-grooves is formed parallel to each edge and another V-groove is formed parallel to the pair of grooves on the side away from the edge. The V-grooves of the pair of V-grooves have center lines spaced apart a distance of substantially two thicknesses of the sheet material. The blank is folded upwards at the single V-groove, and then is folded back at the pair of V-grooves to produce successive 90-degree folds. The outer liner extends continuously over the outer side, top edge, and inner side of the resulting double-thickness wall. A similar technique can produce a box with multiple-thickness walls.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: June 27, 1995
    Assignee: Rock City Box Company, Inc.
    Inventor: Harry A. Voss
  • Patent number: 5386937
    Abstract: A carton for housing nails and like sharp objects is provided which includes a top side defined by opposing pairs of closure flaps and including associated minor flaps which extend outwardly and cooperate with adjacent outwardly extending closure flaps when the carton is in its open position so as to effectively extend the depth of the carton by a predetermined amount. The minor flaps are integrally defined with lines of weakness whereby the flaps can be folded inwardly with respect to the associated closure flaps when the carton is in its closed position so that the top side is defined as a smooth surface by the mutual engagement of adjacent closure flaps without being obstructed by the minor flaps.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: February 7, 1995
    Assignee: Packaging Corporation of America
    Inventor: Darwin L. Crawford
  • Patent number: 5377903
    Abstract: A paperboard tray which resists warping is formed of a unitary blank, the blank having a polymer coating on its tray interior forming surface. The polymer coating is typically a heat resistant, non-stick, FDA approved polymer applied by extrusion coating. The upstanding sidewalls of the tray are joined to respective peripheral portions of the tray base through curved score lines on the tray interior surface. Curved cut lines on the exterior tray surface are each aligned with respective curved score lines on the tray interior surface, the cut lines extending 75 to 90 percent through the blank. The curved score lines and their complementary cut lines may be curved either convex outwardly or concavely inwardly with respect to the tray base.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: January 3, 1995
    Assignee: International Paper Company
    Inventors: Robert L. Gordon, George H. Naugle, David E. Stier
  • Patent number: 5344065
    Abstract: A reversible container having opposite first and second surfaces may be formed of a single sheet of material. The first surface is folded outward to provide a container e. g., for the shipping, mailing or packing of various articles; provision is made for the disassembly of the container at its destination and for adhesive closure of the everted container for further use with the second surface facing outward, e. g., as a container for recyclable articles. Hand holds and openings in the hinged lid of the container for ease of insertion of articles therein, are also provided; the perforated areas of the lid may be reinforced during shipping by an underlying second sheet, which second sheet is removable at the time of modification to an everted form. The container is preferably formed of recycled corrugated fiberboard material, but may be formed of a variety of other materials such as non-corrugated cardboard or fiberboard, synthetic sheet material, plastics, etc.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: September 6, 1994
    Inventor: Charles E. C. Moran
  • Patent number: 5337916
    Abstract: A box is formed of a blank of sheet material wherein a filler is sandwiched between an inner liner and an outer liner. A dado groove is formed parallel to each edge and a V-groove is formed parallel to the dado groove on the side away from the edge. The blank is folded up at the V-groove and then is folded back at the dado to produce a 180 degree fold. The outer liner extends continuously over the outside, top edge, and inner side of the resulting double thickness wall.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: August 16, 1994
    Assignee: Rock City Box Company
    Inventor: Harry A. Voss
  • Patent number: 5273206
    Abstract: A foldable box having, in addition to primary folding lines and flat segments, a number of latent destructive lines in a direction perpendicular to the length of the unfolded box. The latent destructive lines do not interfere with the formation and the normal function of the box. However, they serve to facilitate an irreversible destruction of the box, when the box is forced to be folded into a log-like structure.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: December 28, 1993
    Assignee: WTPA, Incorporated
    Inventor: Eustathios Vassiliou
  • Patent number: 5234158
    Abstract: A two-piece container for pizza or the like. The base includes a first pair of opposite side walls having end flaps. A second pair of opposite side walls are each folded to have an outer portion and an inner portion with at least one tab on the terminal edge thereof for engaging a slot in the bottom wall. The end flaps are received between the inner and outer portions. Cut-outs are provided in the second pair of side walls for securely receiving tabs of the lid between the inner and outer portions. In one aspect, the inner and outer portions have the shapes of trapezoids providing trapezoidal-shaped second side walls to effect sloping side walls for nesting of the bases for compact storage. The sloping side walls are also provided to effect a more secure attachment of the lid to the base. In another aspect, the container is composed of corrugated cardboard and at least one fold line is provided in the bottom wall and the first pair of side walls for folding the base for disposal.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: August 10, 1993
    Assignee: Jamestown Container Corporation
    Inventors: Brian H. Storms, David W. Spitz, Walter F. Mikus