Connect public, paid and private patent data with Google Patents Public Datasets

Standup bag and method of manufacturing same

Download PDF

Info

Publication number
US20040226264A1
US20040226264A1 US10876974 US87697404A US2004226264A1 US 20040226264 A1 US20040226264 A1 US 20040226264A1 US 10876974 US10876974 US 10876974 US 87697404 A US87697404 A US 87697404A US 2004226264 A1 US2004226264 A1 US 2004226264A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
bag
heat
film
layer
top
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10876974
Inventor
James Tankersley
Original Assignee
Tankersley James I.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861Spouts
    • B65D75/5866Integral spouts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014Tube advancing means
    • B65B9/2028Rollers or belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/24Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the tubes being formed in situ by extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008Standing pouches, i.e. "Standbeutel"
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/54Cards, coupons, or other inserts or accessories
    • B65D75/56Handles or other suspension means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/26Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/26Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for
    • B65B61/14Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for for incorporating, or forming and incorporating, handles or suspension means in packages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for
    • B65B61/18Miscellaneous auxiliary devices operating on sheets, blanks, webs, binding material, containers, or packages, and not otherwise provided for for making package-opening or unpacking elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2056Machines for packages of special type or form
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S383/00Flexible bags
    • Y10S383/906Dispensing feature

Abstract

A standup bag for granular products or the like and a method of manufacturing the bag. The standup bag is manufactured from an extruded heat sealable material and includes both an integral handle and a perforation to facilitate opening and pouring out the contents of the bag.

Description

    FIELD OF THE INVENTION
  • [0001]
    This invention relates to a standup bag for granular products or the like with an easy-opening and pouring facility and an integral handle. The standup bag is manufactured from an extruded heat sealable film. This invention also relates to methods of producing the standup bag.
  • BACKGROUND OF THE INVENTION
  • [0002]
    For many years, polyethylene pillow-shaped bags have been used for packaging granular products, such as frozen vegetables. These bags must be stacked vertically because they do not stand up. When stacked vertically, it is difficult for a consumer to determine the contents because the principal display panel is concealed.
  • [0003]
    It is desirable to have bags which stand up so that the principal display panel faces the consumers. Arranging the bags in the standing up position also takes less supermarket shelf space. Stand-up bags for food products in some instances include pouring spouts. For example, U.S. Pat. No. 5,547,284 to Imer shows a stand-up bag having a corner portion which may be cut away to form a spout for pouring. U.S. Pat. No. 5,636,925 to Smiley shows a radially disposed perforation in the upper right hand corner of the bag to provide a pouring spout. In addition, the Smiley patent includes a handle located on top of the bag. U.S. Pat. No. 4,454,979 to Ikeda shows a bag which includes a handle that is cut away to form a spout for pouring. None of the known bags, however, are standup bags manufactured from an extruded heat sealable film which includes both an integral handle and a perforated section that can be torn to open the bag and form a pouring spout.
  • [0004]
    It is known to manufacture bags from coextruded polyethylene film or laminated film. The manufacturing process includes the step of sealing a bag by applying enough heat to the surface of the bag to melt the material and cause it to adhere to itself.
  • [0005]
    In order to heat seal bags manufactured from coextruded polyethylene, the packaging industry has developed a heat sealing mechanism that is similar in design to a light bulb filament. This heat seal mechanism generates enough heat to reach the melting point of the material. Only the inside layer needs to melt to create the seal. The remaining outer layers must be cooled so that they do not melt and cause the bag to lose its shape. The mechanism used for cooling may include blasts of cold air following the application of heat. The cooling step increases the time to produce bags manufactured from coextruded polyethylene. Thus, the bags can be produced at a rate of only about 60 bags per minute.
  • [0006]
    To avoid the manufacturing problems associated with heat sealing coextruded polyethylene, the packaging industry has used laminated film. Laminated film consists of layers of different material which are brought together. The layers may consist of such materials as polyethylene, polyester, paper, foil and polypropylene. The outside layer of laminated film consists of a heat resistant material, such as polyester, or is coated with heat resistant material. In either case, the outside layer melts at a higher temperature than the inside layer. This difference in melting points allows for the continuous application of high temperature jaws or some other suitable mechanism to the outer layer to effectuate a heat seal. The high temperature jaws, which can be set to a temperature higher than the melting point of the inside layer and lower than the melting point of the outer layer, melt the inside layer without melting the outer layer. A heat seal of the inside layer results without structural breakdown of the outer layer and eliminates the need for cooling the outer layer. The use of laminated film and high temperature jaws streamlines the manufacturing process and permits bags to be produced at a rate of about 90 bags per minute. However, the laminated film is approximately three times the cost of coextruded polyethylene.
  • [0007]
    Therefore, there is a need in the packaging industry to combine the cost advantages of using low cost extruded polyethylene film with the manufacturing advantages of using high temperature jaws in a continuous laminated film line, especially to create a standup bag for food or other granular products. SUMMARY OF THE INVENTION
  • [0008]
    It is therefore an object of the present invention to provide a standup bag for granular products having both an integral handle and an easy-opening and pouring facility to deliver the contents of the bag.
  • [0009]
    It is a further object of the present invention to provide a standup bag manufactured from an extruded, heat sealable film.
  • [0010]
    It is another object of the present invention to provide a method for producing a standup bag manufactured from a coextruded, multi-layered heat sealable film, which eliminates the need for cooling outer layers after heat sealing the bag.
  • [0011]
    It is yet another object of the present invention to provide a method for producing a standup bag manufactured from a coextruded multi-layered heat sealable film and having both an integral handle and a perforated section to facilitate opening and pouring out of the contents of the bag.
  • [0012]
    The foregoing objects are achieved and the disadvantages of the known bag designs are overcome by providing a standup bag in accordance with the present invention. The standup bag includes front and rear walls, two side walls, a top portion and a bottom portion upon which the bag stands when filled.
  • [0013]
    A single piece of heat sealable film, having top and bottom edges and first and second side edges, is continuously formed into the front wall, the two side walls, and the rear wall. The rear wall is closed by heat sealing the first and second side edges to each other. The top portion is sealed by heat sealing the top edge and the bottom portion is sealed by heat sealing the bottom edge.
  • [0014]
    The term “walls” is meant to be broad enough to include a bag design resembling a pouch, whereby the rear, top and bottom portions are sealed in the same manner as the above embodiment and the bag can stand up when filled, but the overall structure lacks defined corners or folds.
  • [0015]
    The heat sealable film preferably is an extruded, blown or cast polyethylene film that can be coextruded from various formulations such as Low Density Polyethylene (LDPE), Linear Low Density Polyethylene (LLDPE), metallocene catalyzed polyolefins, High Density Polyethylene (HDPE), polypropylene, polypropylene co-polymers, polyethylene co-polymers, or blends of the LDPE, LLDPE, metallocene catalyzed polyolefins, HDPE resins, polypropylene, polypropylene co-polymers and polyethylene co-polymers in combination with coatings to yield a multi-layer film. The film can be extruded on a single or multi-layer blown film line.
  • [0016]
    The object is to produce a film having an inside layer which can be sealed at a lower temperature than outer/exterior layers. More specifically, the inside layer has a lower melting point and, in turn, a lower seal initiation point than the outer layers. The differential in the heat sealing temperature of the inside layer and the outer layers allows for use of continuous heat sealing clamps, jaws or similar heat sealing devices that do not require a cooling medium for the film. Therefore, a bag forming and filling machine with heat sealing devices, such as jaws and clamps, previously used only with laminated film can be used with non-laminated coextruded heat sealable film.
  • [0017]
    The extruded film can be opaque or clear, and may have no ink or include heat resistant ink or overcoating on its outer layer. Heat resistant ink may be applied in a pattern, leaving no ink between ear sections of a bag, enabling the ear sections to be more readily sealed to each other. The ear sections are portions of the top and bottom edges (approximately {fraction (1/4)} of the length of an edge) running from the right and left side walls of the bag toward the center. As shown in FIGS. 8 and 9, the inside layers of each ear section are sealed, and the outer layers can also be sealed more effectively if no ink has been applied to those outer layers.
  • [0018]
    The heat sealable film is structurally rigid to prevent stretching and distortion of the film during the heat sealing process and to maintain a rectangular package shape during shipping, handling and display of the bag. The extruded film is designed to have a hot tack (i.e., strength a material has in molten state) which is higher in the inside layer than in the outer layer. A high hot tack enables the inside layer to hold the weight of a product poured into the bag during filling.
  • [0019]
    The two side walls are folded inwardly between the front and rear walls to form vertical gussets adjacent to the top portion of the bag and horizontal gussets adjacent to the bottom portion of the bag. The top portion includes a perforation that is torn to open the bag and allow opening of one of the gussets. When one gusset is opened, a spout for pouring out contents of the bag is formed. The perforation can be located in the top right hand corner of the bag, just below the heat seal. The top portion also includes an integral handle which can be cut into the heat sealed area.
  • [0020]
    The bag can be formed on a Vertical Form, Fill and Seal (VFFS) bag machine. The method for producing the standup bag having front and rear walls, two side walls, a top portion, and a bottom portion upon which the bag stands when filled, comprises the steps of wrapping a single piece of heat sealable film, having top and bottom edges and first and second side edges, around a tube to continuously form the front wall, the two side walls, and the rear wall; heat sealing, without using a cooling medium for controlling temperature of the film, the first and second side edges to each other to close the rear wall; folding the two side walls inwardly between the front and rear walls so as to form gussets in the top portion and the bottom portion; heat sealing, without using a cooling medium for controlling temperature of the film, the bottom edge to seal the bottom portion; filling the bag with a predetermined material; heat sealing, without using a cooling medium for controlling temperature of the film, the top edge to seal the top portion; inserting a perforation in the top portion for opening the bag and to form a spout for pouring out the material in the bag when the bag is opened; and forming an integral handle in the top portion.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0021]
    The features and advantages of the invention will become apparent upon review of the following detailed description of the preferred embodiment, taken in conjunction with the following drawings, in which:
  • [0022]
    [0022]FIG. 1 is a front view of a standup bag according to the preferred embodiment of the present invention;
  • [0023]
    [0023]FIG. 2 is a rear view of a standup bag according to the preferred embodiment of the present invention;
  • [0024]
    [0024]FIG. 3 is a right side view of a standup bag according to the preferred embodiment of the present invention;
  • [0025]
    [0025]FIG. 4 is a left side view of a standup bag according to the preferred embodiment of the present invention;
  • [0026]
    [0026]FIG. 5 is a perspective view of a standup bag according to the preferred embodiment of the present invention;
  • [0027]
    [0027]FIGS. 6A-6C are illustrations of a Vertical Form, Fill and Seal bag machine according to the preferred embodiment of the present invention;
  • [0028]
    [0028]FIG. 7 is an illustration of a multi-layer blown film line according to the preferred embodiment of the present invention;
  • [0029]
    [0029]FIG. 8 is a perspective view of a standup bag according to the preferred embodiment of the present invention; and
  • [0030]
    [0030]FIG. 9 is a top cross-sectional view of the top portion of a standup bag according to the preferred embodiment of the present invention.
  • DETAILED DESCRIPTION
  • [0031]
    The present invention relates to a standup bag for granular products, such as foods or the like, manufactured from an extruded heat sealable material and having both an integral handle and a perforated section to facilitate opening and pouring out of the contents of the bag.
  • [0032]
    As shown in FIGS. 1-5, in a preferred embodiment of the present invention, a standup bag 10 includes a front wall 11, a rear wall 12, a side wall 13, a side wall 14, a top portion 15, a bottom portion 16, a vertical heat seal 17 along the rear wall 12, a top portion heat seal 18, a bottom portion heat seal 19, vertical gusset 23 in side wall 13, vertical gusset 24 in side wall 14, a perforation 25 to facilitate opening of the bag 10, and a cut-out handle 26. The top seal 18 and the bottom seal 19 may be corrugated for added beam strength.
  • [0033]
    The bag 10 can be used to package a variety of consumer products, including frozen vegetables, such as peas, carrots and corn, frozen fruits and meats, popcorn, and the like. The bottom portion 16 folds flat due to horizontal gussets 27, 28, so that the bag 10 is rectangular and can stand upright when filled.
  • [0034]
    The top portion 15 of the bag is provided with a perforation 25 that can be torn to open the bag 10 and allow opening of one of the gussets 23. When the gusset 23 is opened, a spout for pouring out contents of the bag 10 is formed. The spout permits use of only a portion of the contents without destroying the bag 10 for future use. The perforation 25 can be inserted in the top right hand corner of the bag 10, just below the heat seal 18. The top portion 15 also includes an integral handle 26 which can be cut into or formed in the heat sealed area 18., The handle 26 permits a consumer to carry the bag 10 without getting his or her hands cold when placing the bag 10 in or taking the bag 10 out of a freezer.
  • [0035]
    As shown in FIGS. 6A-6C, the bag 10 can be formed on a Vertical Form, Fill and Seal (VFFS) bag machine 40. The bag 10 is made from a heat sealable film 30, which, when cut to a predetermined size, has top and bottom edges and first and second side edges which can be heat sealed to close the bag 10.
  • [0036]
    The heat sealable film 30 is wrapped around a tube 43 to continuously form the front wall 11, the two side walls 13, 14, and the rear wall 12. The first and second side edges overlap at 42 and the rear wall 12 is sealed by heat sealing the first and second side edges to each other with a reciprocating or continuous back sealer 44. The bottom portion 16 of the bag is sealed by heat sealing the bottom edge with end seal dies 46. Air jets are used to fold the bottom seal forward to provide a flat bottom. The bag 10 is then filled with a predetermined amount of material before heat sealing the top edges with the end seal dies 46. The end seal dies 46 incorporate a cut-off knife to cut the bag 10 to a predetermined size. Gusset tuckers 48 create the gussets 23, 24, 27, 28 by folding the side walls 13, 14 inwardly between the front and rear walls 11, 12.
  • [0037]
    The bag machine 40 includes a former 41, a feed belt 45, and corner creasers 47. The former 41 enables the heat sealable film 30 to wrap around the tube 43. The feed belt 45 advances the film 30 down the tube 43 and the corner creasers 47 form the edges of the bag 10 to define the front wall 11, the side walls 13, 14, and the rear wall 12.
  • [0038]
    The heat sealable film 30 is a blown, cast or extruded film that can be extruded or coextruded from various formulations, such as Low Density Polyethylene (LDPE), Linear Low Density Polyethylene (LLDPE), metallocene catalyzed polyolefins, High Density Polyethylene (HDPE), polypropylene, polypropylene co-polymers, polyethylene co-polymers, or blends of the LDPE, LLDPE, metallocene catalyzed polyolefins, HDPE resins, polypropylene, polypropylene co-polymers, and polyethylene co-polymers in combination with coatings, to yield a multi-layer film. Of course, other suitable packaging materials also may be used. The material also may be biodegradable. As shown in FIG. 7, the film 30 can be coextruded on a multi-layer blown film line 50. The film 30 can also be extruded as a single layer on the blown film line 50.
  • [0039]
    The composition of the film 30 allows for continuous sealing with sealing jaws, for example, the end seal dies 46, without using a cooling medium to control the temperature of the film. Thus, faster production rates are possible. The heat sealable film 30 is manufactured with an inside layer that has a lower seal initiation temperature than the outer layer. As shown in FIG. 9, the inside layer 35 is sealed to itself at the sealing area 34. Heat must be applied to the outer layer 36 at a temperature higher than the melting point of the inside layer 35. The heat must be applied at or above the melting point of the outer layer 36 to seal ear sections 38, 39, but below the temperature at which the outer layer 36 is destroyed.
  • [0040]
    The film 30 is structurally rigid and puncture-resistant to prevent stretching and distorting the film 30 during the heat sealing process and to maintain a rectangular package shape during shipping, handling and display of the bag 10. The extruded film 30 is designed to have a hot tack which is higher in the inner layer than in the outer layer. A high hot tack enables molten inside layers to hold the weight of a product poured into the bag 10 during filling. A low hot tack in the outer layer 36 prevents sealing jaws from sticking to the outer layer 36.
  • [0041]
    Due to the varying properties of the different layers, the heat sealing mechanisms, for example, the reciprocating back seal 44 and the end seal dies 46, previously used with only laminated film can now be used with non-laminated coextruded heat sealable film 30. A cooling medium to control the temperature of the film 30 is not required.
  • [0042]
    The film 30 can be opaque or clear, and may or may not include heat resistant ink 37 on its outer layer 36. As shown in FIGS. 8 and 9, heat resistant ink 37 may be applied in a pattern, leaving no ink between ear sections 38, 39 of a bag 10. The lack of ink in these areas allows the outer layers 36 of each ear section 38, 39 to be more effectively sealed to each other. The ear sections 38, 39 are portions of the top and bottom edges 18, 19 running from the right or left side walls of the bag 10 toward the center. As shown in FIGS. 8 and 9, the inner layers 35 of each ear section 38, 39 are sealed to each other, and the outer layers 36 can also be sealed to each other if no ink has been applied to these outer layers 36.
  • [0043]
    In one embodiment of a method for making a bag, using a three-layer film, the film line 50 begins with various formulations of LDPE, LLDPE, HDPE, or blends of the LDPE, LLDPE, and HDPE resins which are coextruded from a middle layer extruder 61, an outer layer extruder 62 and an inner layer extruder 63. Extruder 64 is not used with a three-layer film. Any suitable number of layers can be extruded. For example, a single extruder may be used for a single layer film and two extruders may be used to create a two-layer film. The layers are brought together utilizing a rotator 68 and a mixer adaptor 69. The resulting film 30 is advanced by rotating primary nip rolls 58, idler rolls 56 and secondary nip rolls 53. As the film 30 advances beyond the idler rolls 56, it is trimmed by a slitter 54, with excess material 55 falling away. The film 30 is wound into rolls 51 and the surface tension modified by treaters 57 and 52 on its inside and/or outside surfaces, respectively.
  • [0044]
    The preferred embodiments and methods described above are illustrative of the invention, which is not limited to the embodiment and methods described. Various changes and modifications may be made in the invention by one skilled in the art without departing from the spirit or scope of the invention.

Claims (3)

1-53. (canceled)
54. An end seal die comprising a pattern allowing for simultaneous heat sealing of a top portion of a first bag, heat sealing of a bottom portion of a second bag, forming a handle in the top portion of the first bag, and separating the first bag from the second bag.
55-61. (canceled)
US10876974 2002-03-21 2004-06-24 Standup bag and method of manufacturing same Abandoned US20040226264A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10104413 US6957915B2 (en) 2002-03-21 2002-03-21 Standup bag and method of manufacturing same
US10876974 US20040226264A1 (en) 2002-03-21 2004-06-24 Standup bag and method of manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10876974 US20040226264A1 (en) 2002-03-21 2004-06-24 Standup bag and method of manufacturing same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10104413 Division US6957915B2 (en) 2002-03-21 2002-03-21 Standup bag and method of manufacturing same

Publications (1)

Publication Number Publication Date
US20040226264A1 true true US20040226264A1 (en) 2004-11-18

Family

ID=28040584

Family Applications (4)

Application Number Title Priority Date Filing Date
US10104413 Expired - Fee Related US6957915B2 (en) 2002-03-21 2002-03-21 Standup bag and method of manufacturing same
US10876974 Abandoned US20040226264A1 (en) 2002-03-21 2004-06-24 Standup bag and method of manufacturing same
US10876973 Active US7065937B2 (en) 2002-03-21 2004-06-24 Method of manufacturing and filling stand-up bags
US11417333 Abandoned US20060201111A1 (en) 2002-03-21 2006-05-02 Standup bag and method of manufacturing same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US10104413 Expired - Fee Related US6957915B2 (en) 2002-03-21 2002-03-21 Standup bag and method of manufacturing same

Family Applications After (2)

Application Number Title Priority Date Filing Date
US10876973 Active US7065937B2 (en) 2002-03-21 2004-06-24 Method of manufacturing and filling stand-up bags
US11417333 Abandoned US20060201111A1 (en) 2002-03-21 2006-05-02 Standup bag and method of manufacturing same

Country Status (6)

Country Link
US (4) US6957915B2 (en)
JP (1) JP2005520748A (en)
CA (3) CA2685430C (en)
EP (1) EP1501737B1 (en)
ES (1) ES2403048T3 (en)
WO (1) WO2003080456A1 (en)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821610B1 (en) * 2001-03-01 2003-08-29 Masterfoods Bag foods including bag type of food pellets
US6957915B2 (en) 2002-03-21 2005-10-25 Hb Creative Llc Standup bag and method of manufacturing same
USD621280S1 (en) 2003-03-25 2010-08-10 Mark Steele Side access flexible package
US7040810B2 (en) * 2002-03-26 2006-05-09 Mark Steele Flexible package with a transverse access panel device
US6996950B2 (en) * 2003-01-16 2006-02-14 Nestec S.A. Method for sealingly attaching a peripheral attachment member onto a filled-sealed pouch
GB2406305B (en) * 2003-09-29 2006-04-19 Mars Inc Compostable packaging materials and methods
DE10353095A1 (en) * 2003-11-12 2005-06-30 Windmöller & Hölscher Kg Perforated FFS bag
US20070081745A1 (en) * 2004-11-11 2007-04-12 Konrad Tetenborg Perforated form-fill-seal (ffs) bag
US6997319B2 (en) * 2004-03-23 2006-02-14 Sealed Air Corporation Heat resistant foam-in-bag packaging
US20050254731A1 (en) * 2004-05-14 2005-11-17 Curwood, Inc. Easy-open handle bag for medium to heavy duty applications
CN100572207C (en) * 2004-10-01 2009-12-23 旭化成派克斯株式会社;织宽株式会社 Pillow packaging bag, pillow type packaging body, heat seal bar for pillow packaging machine, and pillow packaging machine
US20060094581A1 (en) * 2004-10-28 2006-05-04 Hb Creative, Llc Closure device for, and method for closing, bag for food products
FR2879958B1 (en) * 2004-12-28 2007-03-16 Socoplan Soc Par Actions Simpl A method of making a flexible material bag comprising a sealing area in form
US7322169B2 (en) * 2005-01-05 2008-01-29 Cmd Corporation Vertical, form, fill and seal packaging system
US7275354B2 (en) * 2005-01-05 2007-10-02 Cmd Corporation Vertical form, fill and seal packaging system
DE102005027020B4 (en) * 2005-06-08 2009-06-25 Mondi Ag Protective packaging for an article
US9011003B2 (en) 2006-02-08 2015-04-21 S.C. Johnson Home Storage, Inc. Reclosable pouch and zipper for a reclosable pouch
US7594582B2 (en) * 2006-04-28 2009-09-29 Restaurant Technology, Inc. Temperature controlled fluid bath food holding apparatus
US20070253647A1 (en) * 2006-04-28 2007-11-01 Restaurant Technology, Inc. Temperature controlled fluid bath food holding device and method
US8684600B2 (en) * 2006-04-28 2014-04-01 Restaurant Technology, Inc. Temperature controlled fluid bath food holding device
US20080310772A1 (en) * 2006-05-01 2008-12-18 Dayton Douglas C Systems and methods for waste disposal using a disposal bag with a rectangular frame
US20080247679A1 (en) * 2006-05-01 2008-10-09 Dayton Douglas C Systems and methods for waste disposal using a wearable disposal bag
US20070295794A1 (en) * 2006-06-21 2007-12-27 Diamond Packaging Curvilinear product package
US20110230323A1 (en) * 2006-05-26 2011-09-22 James Alan Robinette Assembly for forming a bag with a pinch-bottom seal
US20070274614A1 (en) * 2006-05-26 2007-11-29 Abel James W Method for closing and sealing a woven polymeric bag
WO2008050865A1 (en) * 2006-10-27 2008-05-02 Chokoku Plast Corporation Pleated free-standing packing bag, pleated free-standing package, master roll for pleated free-standing package, and method for producing pleated free-standing package
DE102007021045A1 (en) * 2007-05-04 2008-11-06 Poly-Clip System Gmbh & Co. Kg Perforation for protective wrappings, apparatus and sheet material for this purpose
US20080286511A1 (en) * 2007-05-15 2008-11-20 Manuel Chiu Multilayer film structure
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
ES2372874T3 (en) * 2007-06-28 2012-01-27 Tetra Laval Holdings & Finance Sa A device for induction sealing packaging material heat-seal to produce sealed packages of pourable food product.
CA2597828A1 (en) * 2007-08-17 2009-02-17 Polycello Division Of Epc Industries Limited Microwaveable package
US20090180716A1 (en) * 2007-10-31 2009-07-16 Mark Steele Package handle
EP2119629A1 (en) * 2008-04-22 2009-11-18 Rovema-Verpackungsmaschinen Gmbh Tubular bag machine and method
JP2010036968A (en) * 2008-08-07 2010-02-18 Toppan Printing Co Ltd Steam venting self-supporting packaging bag
GB0818312D0 (en) 2008-10-07 2008-11-12 Cadbury Holdings Ltd Packaging method and apparatus
US8746495B2 (en) 2008-12-01 2014-06-10 S.C. Johnson Home Storage, Inc. Flexible container
US8177431B2 (en) 2008-12-01 2012-05-15 S.C. Johnson Home Storage, Inc. Flexible container
RU2508235C2 (en) * 2008-12-19 2014-02-27 Эколин Аб Container and device and method of aseptic filling of container
US8468779B2 (en) 2009-05-05 2013-06-25 Sealed Air Corporation (Us) Method and apparatus for positioning, inflating, and sealing a mailer comprising an inner inflatable liner
ES2380737A1 (en) * 2009-07-16 2012-05-18 Industrias Company Envase Y Pesaje S.L Improved automatic bagger machine bags and plastic bag manufactured by the machine itself.
US20110083402A1 (en) * 2009-10-09 2011-04-14 Larry Dee Walker Vertical form, fill, and seal system for hot fill liquids
US20110164836A1 (en) * 2010-01-05 2011-07-07 Chen Yi-Min Plastic bag with reinforced sides
US20110192121A1 (en) 2010-02-08 2011-08-11 Sealed Air Corporation (Us) Inflatable Mailer, Apparatus, and Method for Making the Same
US9421743B2 (en) 2010-06-28 2016-08-23 Dow Global Technologies Llc Single polymer film structures for use in stand-up-pouches
US20120328217A1 (en) * 2010-07-06 2012-12-27 B3 Plastics, Llc Bag with secondary handle
US8397958B2 (en) 2010-08-05 2013-03-19 Ds Smith Plastics Limited Closure valve assembly for a container
US20120106877A1 (en) * 2010-10-29 2012-05-03 Tang Luen-Sing Flexible packaging material and a package formed therewith
EP2455301B1 (en) * 2010-11-17 2013-07-24 Mondi Consumer Packaging Technologies GmbH Film laminate for producing bag packaging with integrated film handle and method for producing the laminate
CA2746906A1 (en) * 2011-07-20 2013-01-20 Sacs Industriels Inc. Takeout food bag
NL2008045C (en) * 2011-12-27 2013-07-01 Hendrik Jan Berg Bag with pre-applied strap handle.
WO2015006328A1 (en) 2013-07-08 2015-01-15 The Pictsweet Company Slurry product filled film pouches and method of making same
US20150225126A1 (en) * 2014-02-13 2015-08-13 Gary L. Sharpe Tamper evident unit dose packaging
US9505525B2 (en) 2014-03-11 2016-11-29 S.C. Johnson & Son, Inc. Stand-up plastic storage bag
US9540145B2 (en) 2014-03-11 2017-01-10 S. C. Johnson & Son, Inc. Stand-up plastic storage bag
US9499307B2 (en) 2014-03-11 2016-11-22 S. C. Johnson & Son, Inc. Stand-up plastic storage bag
WO2016012931A1 (en) * 2014-07-22 2016-01-28 Nestec Sa Reclosable packaging with a handle, and methods and devices for making such packaging

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182850B2 (en) *
US3555974A (en) * 1968-11-14 1971-01-19 Paramount Packaging Corp Method and apparatus for making plastic
US3642189A (en) * 1969-08-29 1972-02-15 Kema Nord Ab Bags provided with closing and carrying device
US3663239A (en) * 1969-04-07 1972-05-16 Nabisco Inc Toaster packages having four spouts
US3935993A (en) * 1973-01-26 1976-02-03 Leon Doyen Free-standing container
US4106265A (en) * 1975-05-29 1978-08-15 Fmc Corporation Wrapping machine and method with four side rotary tucker
US4109792A (en) * 1973-04-04 1978-08-29 The Dow Chemical Company Method of packaging and product made thereby
US4693365A (en) * 1985-04-15 1987-09-15 Corella Arthur P Package, instrumentation, system and method for packaging flaccid items, filaments and the like
US4816104A (en) * 1984-05-02 1989-03-28 Mobil Oil Corporation Methods and systems for preparing flat-bottom thermoplastic sack
US4909356A (en) * 1988-02-04 1990-03-20 A.W.A.X. Progettazione E Ricerca S.R.L. Fully self-service check-out counter incorporating an integral apparatus for on demand manufacturing of custom-sized bags conforming to the volume of articles received therein
US5219229A (en) * 1990-09-07 1993-06-15 Karl-H. Sengewald Gmbh & Co. Kg Packing, in particular a packing for compressible packed goods
US5288531A (en) * 1991-08-09 1994-02-22 The Dow Chemical Company Pouch for packaging flowable materials
US5437406A (en) * 1993-07-02 1995-08-01 International Paper Semi-rigid cereal carton
US5547284A (en) * 1992-06-04 1996-08-20 Imer; Rodney H. Bag for liquids, pastes, or granulates and method of manufacturing
US5673541A (en) * 1995-10-31 1997-10-07 Emplex Systems, Inc. Apparatus and method for forming, filling and sealing a bag
US5941643A (en) * 1998-04-07 1999-08-24 Triangle Package Machinery Company Partially zippered pouch and machine for making same
US6182850B1 (en) * 1998-06-24 2001-02-06 Alusuisse Technology & Management Ltd. Closure membranes
US6352365B1 (en) * 2000-08-08 2002-03-05 Colgate Palmolive Company Bag with spout
US6481184B1 (en) * 1999-08-30 2002-11-19 Hastamat Verpackungstechnik Gmbh + Co. Kg Method and apparatus for fastening of tubular bags on a hanger strip
US6500559B2 (en) * 1998-05-04 2002-12-31 Cryovac, Inc. Multiple layer film with amorphous polyamide layer
US6871473B1 (en) * 2000-08-10 2005-03-29 Pactiv Corporation Method and apparatus for making reclosable plastic bags using a pre-applied slider-operated fastener

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458111A (en) * 1967-12-21 1969-07-29 Mira Pak Inc Package
US3696179A (en) * 1970-10-15 1972-10-03 William A Jacobs Extruding and filling containers made of foamed thermoplastic polymer
US3654841A (en) * 1970-10-20 1972-04-11 Paramount Packaging Corp Machine for making plastic bags
US4454979A (en) 1980-09-05 1984-06-19 Toyo Seikan Kaisha Ltd. Laminated packing bag with spout formed from handle portion
DE3425430C2 (en) * 1984-07-11 1986-05-22 Womako Maschinenkonstruktionen Gmbh, 7440 Nuertingen, De
US4637199A (en) * 1985-01-30 1987-01-20 International Paper Company Induction sealing of paperboard
US5313766A (en) * 1987-02-23 1994-05-24 Awax S.R.L. Method and apparatus for on demand manufacturing of custom-sized bags conforming to the volume of articles received therein at a check-out counter
US5400569A (en) * 1990-03-06 1995-03-28 Owens-Corning Building Products (U.K.) Limited Packing machine
US5226269A (en) * 1992-05-22 1993-07-13 Haybuster Manufacturing Inc. Apparatus and method for automatically baling loose fibrous material
US5636925A (en) 1995-03-22 1997-06-10 Bonar Packaging, Inc. Heavy duty bag having an easy opening spout, and method and apparatus for making a heavy duty bag having an easy opening spout
US5613349A (en) * 1995-08-28 1997-03-25 Elr, Inc. Method of making product packages
JP3091122B2 (en) * 1995-09-04 2000-09-25 ハウス食品株式会社 Solid filling apparatus and solids filling method using the same
DE69830159D1 (en) * 1997-02-17 2005-06-16 Cryvac Inc Packaging for bag with inner bag
US6401430B2 (en) * 1998-06-17 2002-06-11 Southpac Trust International, Inc. Sleeves formed of polymeric materials having a texture or appearance simulating the texture or appearance of paper
CA2398453A1 (en) * 2000-01-31 2001-08-02 Cryovac, Inc. Reclosable pouch
US6481183B1 (en) * 2000-04-21 2002-11-19 Cmd Corporation Vertical form fill seal bag with recloseable seal and method of making thereof
US6957915B2 (en) 2002-03-21 2005-10-25 Hb Creative Llc Standup bag and method of manufacturing same

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182850B2 (en) *
US3555974A (en) * 1968-11-14 1971-01-19 Paramount Packaging Corp Method and apparatus for making plastic
US3663239A (en) * 1969-04-07 1972-05-16 Nabisco Inc Toaster packages having four spouts
US3642189A (en) * 1969-08-29 1972-02-15 Kema Nord Ab Bags provided with closing and carrying device
US3935993A (en) * 1973-01-26 1976-02-03 Leon Doyen Free-standing container
US4109792A (en) * 1973-04-04 1978-08-29 The Dow Chemical Company Method of packaging and product made thereby
US4106265A (en) * 1975-05-29 1978-08-15 Fmc Corporation Wrapping machine and method with four side rotary tucker
US4816104A (en) * 1984-05-02 1989-03-28 Mobil Oil Corporation Methods and systems for preparing flat-bottom thermoplastic sack
US4693365A (en) * 1985-04-15 1987-09-15 Corella Arthur P Package, instrumentation, system and method for packaging flaccid items, filaments and the like
US4909356A (en) * 1988-02-04 1990-03-20 A.W.A.X. Progettazione E Ricerca S.R.L. Fully self-service check-out counter incorporating an integral apparatus for on demand manufacturing of custom-sized bags conforming to the volume of articles received therein
US5219229A (en) * 1990-09-07 1993-06-15 Karl-H. Sengewald Gmbh & Co. Kg Packing, in particular a packing for compressible packed goods
US5288531A (en) * 1991-08-09 1994-02-22 The Dow Chemical Company Pouch for packaging flowable materials
US5547284A (en) * 1992-06-04 1996-08-20 Imer; Rodney H. Bag for liquids, pastes, or granulates and method of manufacturing
US5437406A (en) * 1993-07-02 1995-08-01 International Paper Semi-rigid cereal carton
US5673541A (en) * 1995-10-31 1997-10-07 Emplex Systems, Inc. Apparatus and method for forming, filling and sealing a bag
US5941643A (en) * 1998-04-07 1999-08-24 Triangle Package Machinery Company Partially zippered pouch and machine for making same
US6500559B2 (en) * 1998-05-04 2002-12-31 Cryovac, Inc. Multiple layer film with amorphous polyamide layer
US6182850B1 (en) * 1998-06-24 2001-02-06 Alusuisse Technology & Management Ltd. Closure membranes
US6481184B1 (en) * 1999-08-30 2002-11-19 Hastamat Verpackungstechnik Gmbh + Co. Kg Method and apparatus for fastening of tubular bags on a hanger strip
US6352365B1 (en) * 2000-08-08 2002-03-05 Colgate Palmolive Company Bag with spout
US6871473B1 (en) * 2000-08-10 2005-03-29 Pactiv Corporation Method and apparatus for making reclosable plastic bags using a pre-applied slider-operated fastener

Also Published As

Publication number Publication date Type
CA2685430A1 (en) 2003-10-02 application
CA2745844A1 (en) 2003-10-02 application
WO2003080456A1 (en) 2003-10-02 application
CA2745844C (en) 2012-06-26 grant
US7065937B2 (en) 2006-06-27 grant
CA2685430C (en) 2011-10-18 grant
US20040226265A1 (en) 2004-11-18 application
CA2477992A1 (en) 2003-10-02 application
ES2403048T3 (en) 2013-05-13 grant
CA2477992C (en) 2010-09-28 grant
US20060201111A1 (en) 2006-09-14 application
EP1501737A1 (en) 2005-02-02 application
EP1501737A4 (en) 2009-03-11 application
US20030179957A1 (en) 2003-09-25 application
JP2005520748A (en) 2005-07-14 application
EP1501737B1 (en) 2013-01-16 grant
US6957915B2 (en) 2005-10-25 grant

Similar Documents

Publication Publication Date Title
US3480198A (en) Bag opening device
US6679034B2 (en) Vertical stand-up pouch quick change module
US4518087A (en) Sealed flexible container with non-destructive peelable opening
US5788378A (en) Reclosable stand-up bag
US6177172B1 (en) Zippered film and bag
US6719678B1 (en) Recloseable retort pouch
US5512337A (en) Packages with controlled easy open features
US6371644B1 (en) Reclosable seal, package, method and apparatus
US5181365A (en) Method and apparatus for forming individual pouches from a continuous web and packaging a product in the individual pouches
US6820391B2 (en) Apparatus for making a reclosable pouch
US6659645B1 (en) Stand-up bag
US2999627A (en) Flat bag package and method for fabricating same
US4705174A (en) Sealed flexible container with non-destructive peelable opening
US4727706A (en) Method for forming smooth walled flexible package
US5547284A (en) Bag for liquids, pastes, or granulates and method of manufacturing
US6993886B2 (en) Method for sealing zipper assembly to bag making film at three or more points
US5080643A (en) Method of making a stand-up plastic bag
US4589145A (en) Packaging material and package
US4437293A (en) Method and apparatus for making a reclosable package
US6722106B2 (en) Vertical stand-up pouch
US5971613A (en) Bag constructions having inwardly directed side seal portions
US5875611A (en) Offset sealing method for plastic films
US5441345A (en) Specialized pouches for containing and controllably dispensing product
US20060034551A1 (en) Reclosable containers
US4954124A (en) Stand-up plastic bag and method of making same