US3904084A - Plastic bag and a protective container therefor and a fixture for securing the bag in the container - Google Patents

Plastic bag and a protective container therefor and a fixture for securing the bag in the container Download PDF

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Publication number
US3904084A
US3904084A US397417A US39741773A US3904084A US 3904084 A US3904084 A US 3904084A US 397417 A US397417 A US 397417A US 39741773 A US39741773 A US 39741773A US 3904084 A US3904084 A US 3904084A
Authority
US
United States
Prior art keywords
bag
flap
container
channel member
floor
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.)
Expired - Lifetime
Application number
US397417A
Other languages
English (en)
Inventor
Luigi Ukmar
Mario Agostini
Gianfranco Bellandi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montedison SpA
Original Assignee
Montedison SpA
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
Application filed by Montedison SpA filed Critical Montedison SpA
Application granted granted Critical
Publication of US3904084A publication Critical patent/US3904084A/en
Priority to US05/830,900 priority Critical patent/USRE29721E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container
    • B65D90/047—Flexible liners, e.g. loosely positioned in the container comprising rigid bracing, e.g. bulkheads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/008—Doors for containers, e.g. ISO-containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/02—Wall construction
    • B65D2590/04—Linings
    • B65D2590/043—Flexible liners
    • B65D2590/046—Bladders

Definitions

  • ABSTRACT A package for bulk materials having a box-like protective container and a plastic bag liner, and means for securing the bag in the container by a triangularly shaped flap formed by a fold of the bag wall, said means comprising a channel member and an elongated metal strip adapted to be secured in the groove of the channel member and secure the flap therebe' tween, said bag also having triangularly shaped flaps for filling and emptying the bag.
  • PATENTED SEP 9 I975 sum 2 0F 4 PA E 9% sum 3 [IF 4 PLASTIC BAG AND A PROTECTIVE CONTAINER THEREFOR AND A FIXTURE FOR SECURING THE BAG IN THE CONTAINER
  • the present invention relates to a plastic bag adapted to be inserted in a protective container and to a means for securing the bag to the wall of the container to provide a package suitable for transporting granular materials in bulk and more particularly to such a package which is well adapted for stoking of the material therein and for charging and discharging bulk material.
  • This system has various disadvantages including the substantial cost of the big bag and above all the necessity to dispose of special containers that in general are not available on the market.
  • an object of this invention is to provide a special bag and suitable means for fitting the bag in a container which avoid the disadvantages of the prior art.
  • Another object of the invention is to provide a relatively inexpensive plastic bag and an inexpensive means for fitting the bag in a container which meets the ISO standards.
  • a further object of this invention is to provide a bag fastening means that may be used on any type of container having a rear door which functions perfectly during the transport of the container as well as during the loading and unloading of the bulk product.
  • the foregoing objects and others are accomplished in accordance with this invention, generally speaking, by providing a large plastic bag adapted to contain bulk granular material and to be secured inside a protective container.
  • the invention provides a tubular plastic bag welded at each end so as to form a pair of triangular shaped folds or flaps at each end of the bag.
  • the invention also provides an anchor means for securing the bag by one of its triangularly shaped flaps to an inside wall of the bottom wall or floor of the protective container.
  • This anchor means may be a channel member for winding one of the flaps thereabout and means for pressing a portion of the flap into the groove of the channel to secure the wound flap.
  • a pair of relatively short channel members are anchored to opposite inner walls of the container and the ends of the channel member having the bag flap wound thereabout are inserted in the anchored members to secure the bag in the protective container.
  • This anchoring means may be used to secure the flap to be used as the discharge opening when the bulk material is to be unloaded from the bag.
  • a series of sealing means is arranged so as to form a grid or grating immediately behind the front door of the container and provided with slots for the flaps used to load and to unload the bag.
  • a transverse bar is fittablc above said grating and the loading flap is wound about the bar after loading has been completed.
  • a conventional feeding hopper or similar means is fixed with a tight fit to the loading flap in order to permit the unloading of the material with the front door open and the container slanting at about 45 with respect to the horizontal plane.
  • FIG. 1 is a schematic perspective view of one embodiment of a big plastic bag having four triangular flaps provided by the invention
  • FIG. 2 is a perspective view of an embodiment of a means for anchoring the bag of FIG. I to the floor of the container;
  • FIG. 3 illustrates schematically a means for press fixing another triangularly shaped flap of the bag to the container floor
  • FIGS. 4., 5 and 6 illustrate means for securing the ends of the channel members of FIGS. 2 and 3 to the container;
  • FIG. 7 shows in a schematic way the relative position of the mounted devices of FIGS. 2 and 3;
  • FIG. 8 shows in a perspective view the series of elements forming a grid or grate in the vertical position
  • FIG. 9 shows one of the elements that may be used for forming the grating of FIG. 8;
  • FIG. 10 shows schematically the known hoppershaped device with tight-fitting ring for the discharge of the material from the container.
  • FIG. 11 is a perspective view illustrating the bag of FIG. I in a container of the type illustrated in FIG. 8.
  • the present invention provides a combination of the plurality of elements and/or devices individually represented in the drawing and is particularly suited, but not exclusively, for the transport in large containers of powdery and/or granular bulk material.
  • Said equipment thus consists of a single bag 1 (FIG. I), obtained from an extruded tubular thermoplastic material, preferably of polyethylene, having an average thickness of 0.20 mm.
  • This bag is formed from a tube by welding the two ends 2 and 3 thereof.
  • the weld lines are parallel to each other and lie in a plane substantially perpendicular to the generating line of the tube.
  • the tube is stretched while it is being welded. In this way the dimensions of the bag will be defined by the dis tance between the opposite weld lines 2 and 3 and by the circumference of the tube.
  • Bag 1 once introduced into the container, will assume after it is filled. the parallelepiped shape of the container itself and will present at its two ends two pairs of triangular shaped flaps 4, 5 and 6, 7 on planes perpendicular to weld lines 2 and 3.
  • One pair of triangular flaps for instance those on the same plane indicated as 5 and 7 in the drawing, are used, respectively, to anchor the bag to the floor of the container and for discharging the contents from the bag when the container is tilted, for example, at about 45.
  • Flap 6 on the other hand, will form the charging means for loading bulk material into bag I.
  • the anchoring of bag 1 in the container is achieved by means of the bar of FIG. 2 consisting of a metal profile or channel member 8, having a U" shaped crosssection in whose longitudinal groove is fitted a rod 9 fixed thereto by two wing nuts 10 and 10' and their respective screws 11 and 11
  • flap 5 is wound around channel member 8 between the two screws 11 and 11' and then clamped on channel member 8 by rod 9 by means of wing nuts 10 and 10'.
  • Channel 8 with the flap of the bag wound thcreabout is then fixed to the floor of the container by restraining its two ends into two U shaped angle irons or channels 12 (FIGS. 456) welded or otherwise secured at points 13 (FIG. 6) to the base of the opposing walls of a container (generically indicated by 14 in FIGS. 4-6 and 10).
  • the groove of each angle iron is turned towards the rear wall of the container 14 in order to retard slip of channel member 8 and bag 1 while the container is tilted.
  • a grid or grating device 15 which is formed of composable metal elements 16 (FIG. 9).
  • These various elements l6 consist of pairs of C shaped profile irons 17, [7' etc. with a length corresponding to the front end opening of the container and spaced from each other by crossmembers 18, 18' etc. (FIGS. 8 and 9).
  • This gratelike element of FIG. 8 is achieved by inserting the various profile irons 16 into suitable guides provided on uprights (not represented in the drawing) added and fixed with bolts or the like to the head up rights (discharging side) of the container.
  • This grate assembly once put into place, leaves a rectangular clearance 19 towards the floor of the container into which flap 7 protrudes and a similar clearance 20 at the upper part of the grating towards the top of the container into which flap 6 protrudes.
  • the grate assembly is arranged inside the container immediately behind the front door of the same.
  • a pressure device (FIG. 3) consisting of a C shaped metal profile iron 21 from the groove of which project two screw bolts 22 22' with corresponding locking nuts 23 23'.
  • Side plates 24 24', projecting from the profile iron on the internal side of the container protect the bag from damage during fastening or unfastening of the screw bolts.
  • This pressure device confines the loading flap 7 of the bag between the floor and the underside of the profile iron 21 by forcing iron 21 by means of the bolts and nuts between the last profile of grating 15 and the floor of the container.
  • This pressing device is that of preventing the product contained in the bag from flowing out or to form pockets or bridges" in the material which may interfere with discharge of material as the bag is filled.
  • This pressing device is put into operation immediately before starting the loading operations and obviously is removed when unloading.
  • FIG. 7 the relative positions of the anchoring channel 8 (rear end of the container), of pressing bar 21 on the door end of the container, and of the upper bar 25 are illustrated schematically.
  • Triangular flap 6 of the bag after the bag has been filled, is wound around bar 25 (FIG. 7) which is then fixed above grating 15 in order to hinder the unwinding of the triangular flap and the possibility of contamination of the product.
  • bar 25 is achieved by inserting its two opposite ends into two U shaped brackets (not represented) welded flash to the upper part of the door.
  • the package provided by the invention thus consists of a plurality of components, more particularly of a special large plastic bag and of different means for the arrangement of the bag in a container, and also, for facilitating the flowing down of the product through the unloading triangular flap 7 (FIG. 1), of a discharging hopper 16 (FIG. 10) for the guidance of flap 7 during the positioning thereof.
  • the hopper is hinged at the base of the frame of the container, having at its terminal part a sleeve-like or annular inflatable sealing device 27 suitable for being connected to known unloading systems such as rotocells and the like.
  • FIG. 11 A complete assembly of the bag in container 14 is illustrated in FIG. 11. This container has front end doors 32a and 32b and rear end doors 34a and 34!).
  • Rod 25' is similar to the rod 25 illustrated in FIG. 7. Flap 4 is wound around rod 25'. Flap 6 is to be wound about rod 25 after the bag has been filled and is then fixed above the grating l5.
  • a large plastic bag adapted to contain granular material and disposed in a protective container having front and back doors and a floor, said bag being closed by weld lines at each end and folded to form a pair of oppositely disposed triangularly shaped integral flaps projecting outwardly from the said end; means for anchoring a first flap to the floor of the container comprising a channel member having said flap wound thereabout and means for pressing the wound flap against said channel member, means carried by said container for securing the channel member and said flap pressed thereagainst to the floor of the container; a second flap at the opposite end of the bag in the same plane as the first flap and adapted for emptying the bag; means for securing the second flap to the floor of the container adjacent to the front door of the container while the bag is being loaded and is storing bulk material, a third flap on the same end of the bag as the emptying flap, a series of elements arranged to form a vertical grating in the container immediately behind the front door and provided with a clearance through which loading
  • a container for bulk material comprising a protective box having front, rear, top, bottom and sidewalls and a plastic bag liner, said bag having closed ends each with a pair of triangularly shaped folds extending as flaps and integral with the bag wall, a first flap being adapted to be used for emptying the bag when tilted and a second flap on the opposite end of the bag and in the same plane as the first flap and means anchoring said bag in the box to the bottom wall thereof comprising a channel member, said second flap being wound about said channel member, a bar-like member secured in the groove of the channel member with the underlying portion of the flap pressed in the groove, and a pair of C-shaped members secured to the bottom wall of the box adjacent to opposite side walls, said channel member having its ends inserted in said C shaped members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Packages (AREA)
US397417A 1972-09-20 1973-09-14 Plastic bag and a protective container therefor and a fixture for securing the bag in the container Expired - Lifetime US3904084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/830,900 USRE29721E (en) 1972-09-20 1977-09-06 Plastic bag and a protective container therefor and a fixture for securing the bag in the container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT29432/72A IT970706B (it) 1972-09-20 1972-09-20 Apparecchiatura costituita da un saccone in plastica e da una at trezzatura per la sua sistemazio ne su grandi contenitori partico larmente indicata per il carico e scarico di materiali sfusi incoe renti

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/830,900 Reissue USRE29721E (en) 1972-09-20 1977-09-06 Plastic bag and a protective container therefor and a fixture for securing the bag in the container

Publications (1)

Publication Number Publication Date
US3904084A true US3904084A (en) 1975-09-09

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Application Number Title Priority Date Filing Date
US397417A Expired - Lifetime US3904084A (en) 1972-09-20 1973-09-14 Plastic bag and a protective container therefor and a fixture for securing the bag in the container

Country Status (9)

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US (1) US3904084A (US20030220297A1-20031127-C00074.png)
JP (1) JPS4970776A (US20030220297A1-20031127-C00074.png)
BE (1) BE805084A (US20030220297A1-20031127-C00074.png)
DE (1) DE2346384A1 (US20030220297A1-20031127-C00074.png)
ES (1) ES418876A1 (US20030220297A1-20031127-C00074.png)
FR (1) FR2199733A5 (US20030220297A1-20031127-C00074.png)
GB (1) GB1439078A (US20030220297A1-20031127-C00074.png)
IT (1) IT970706B (US20030220297A1-20031127-C00074.png)
NL (1) NL7312647A (US20030220297A1-20031127-C00074.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980196A (en) * 1975-05-21 1976-09-14 United States Lines, Inc. Lining of containers for bulk cargo
US4186845A (en) * 1978-08-01 1980-02-05 Podd Victor T Container liner
EP0010182A1 (de) * 1978-10-07 1980-04-30 Ruhrkohle Aktiengesellschaft Schlauchförmiges Inlett
GB2228468A (en) * 1989-01-10 1990-08-29 Aps Co Ltd Bag for transport container
US6481598B1 (en) * 1999-11-18 2002-11-19 Caretex A/S Container liner with displacement means for aiding the discharge of the contents of said container liner

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE48082B1 (en) * 1979-06-22 1984-09-19 An Bord Bainne Co Operative Lt Frame bulkhead for standard containers
JPS6156288U (US20030220297A1-20031127-C00074.png) * 1984-09-19 1986-04-15
JPS6156287U (US20030220297A1-20031127-C00074.png) * 1984-09-19 1986-04-15

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899109A (en) * 1959-08-11 Paint tank and dispensing liner therefor
US3087654A (en) * 1960-03-30 1963-04-30 Alfred A Moore Crack filling dispenser
US3157341A (en) * 1962-06-07 1964-11-17 Waldorf Paper Prod Co Lined containers
US3172570A (en) * 1962-09-14 1965-03-09 Lipschutz Sidney Novel electrolyte package
US3696952A (en) * 1970-03-23 1972-10-10 Sea Land Service Bulk cargo handling system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899109A (en) * 1959-08-11 Paint tank and dispensing liner therefor
US3087654A (en) * 1960-03-30 1963-04-30 Alfred A Moore Crack filling dispenser
US3157341A (en) * 1962-06-07 1964-11-17 Waldorf Paper Prod Co Lined containers
US3172570A (en) * 1962-09-14 1965-03-09 Lipschutz Sidney Novel electrolyte package
US3696952A (en) * 1970-03-23 1972-10-10 Sea Land Service Bulk cargo handling system and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980196A (en) * 1975-05-21 1976-09-14 United States Lines, Inc. Lining of containers for bulk cargo
US4186845A (en) * 1978-08-01 1980-02-05 Podd Victor T Container liner
EP0010182A1 (de) * 1978-10-07 1980-04-30 Ruhrkohle Aktiengesellschaft Schlauchförmiges Inlett
GB2228468A (en) * 1989-01-10 1990-08-29 Aps Co Ltd Bag for transport container
AU632524B2 (en) * 1989-01-10 1993-01-07 A.P.S. Co., Ltd. Interior bag for a container
GB2228468B (en) * 1989-01-10 1993-02-10 Aps Co Ltd Interior bag for a container
US6481598B1 (en) * 1999-11-18 2002-11-19 Caretex A/S Container liner with displacement means for aiding the discharge of the contents of said container liner

Also Published As

Publication number Publication date
ES418876A1 (es) 1976-06-16
GB1439078A (en) 1976-06-09
NL7312647A (US20030220297A1-20031127-C00074.png) 1974-03-22
IT970706B (it) 1974-04-20
FR2199733A5 (US20030220297A1-20031127-C00074.png) 1974-04-12
BE805084A (fr) 1974-03-20
JPS4970776A (US20030220297A1-20031127-C00074.png) 1974-07-09
DE2346384A1 (de) 1974-03-28

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