WO1995001925A1 - Doublures pour conteneurs - Google Patents

Doublures pour conteneurs Download PDF

Info

Publication number
WO1995001925A1
WO1995001925A1 PCT/GB1994/001477 GB9401477W WO9501925A1 WO 1995001925 A1 WO1995001925 A1 WO 1995001925A1 GB 9401477 W GB9401477 W GB 9401477W WO 9501925 A1 WO9501925 A1 WO 9501925A1
Authority
WO
WIPO (PCT)
Prior art keywords
liner
bladder
container
discharge
bladders
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.)
Ceased
Application number
PCT/GB1994/001477
Other languages
English (en)
Inventor
Antony Luigi Paul Tisi
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.)
Philton Polythene Converters Ltd
Original Assignee
Philton Polythene Converters Ltd
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 Philton Polythene Converters Ltd filed Critical Philton Polythene Converters Ltd
Priority to GB9600109A priority Critical patent/GB2295606B/en
Priority to AU70808/94A priority patent/AU7080894A/en
Publication of WO1995001925A1 publication Critical patent/WO1995001925A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/58—Large containers characterised by means facilitating filling or emptying by displacement of walls
    • B65D88/60—Large containers characterised by means facilitating filling or emptying by displacement of walls of internal walls
    • B65D88/62—Large containers characterised by means facilitating filling or emptying by displacement of walls of internal walls the walls being deformable
    • 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
    • B65D90/54—Gates or closures
    • B65D90/56—Gates or closures operating by deformation of flexible walls
    • 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

  • This invention concerns flexible liners for containers, for use in the bulk transport of flowable particulate products.
  • this invention relates to a method of discharging a bulk-transport container having a flexible liner, and to a flexible liner for a bulk transport container.
  • the invention further relates to a container whenever fitted with such a liner.
  • Containers of standardised sizes are ever more being used for the transport of products.
  • the products may be packaged appropriately and then the packages loaded into the container, or - depending upon the nature of the products - those products may be loaded directly into the container.
  • particulate products such as powders, granules or the like
  • a wide variety of particulate materials may be carried in bulk in this way, and in view of the isolation of the product from the ambient, even food products may conveniently be transported.
  • the conventional way of discharging a powder-like material carried in a liner within a container is to allow the material to run under gravity out of a discharge provided at one end of the liner, by tipping the container.
  • the wall of the container in the region of the discharge may be provided with an aperture having a door which, when opened, gives access to the discharge of the liner.
  • a structure is provided within the container to retain the liner in position, the structure having an aperture giving access to the discharge. When the container is to be discharged, the container doors are opened and then access gained to the discharge through the aperture in the structure.
  • the discharge comprises a tube communicating with the interior of the liner and which tube is normally closed off, but which may be opened in order to allow product to run out of the liner.
  • a funnel-like arrangement may be offered to the liner and the liner is then slit to allow product to run out of the liner into the funnel-like arrangement.
  • the liner may be pre-slit, during manufacture, and the slit held closed with adhesive tape, which tape may be ripped off to open the slit, when the liner is to be discharged.
  • a method of discharging a bulk- transport container having a flexible internal liner by tipping the container to cause transported product to run under gravity out of a discharge at one end thereof in which method air is supplied under pressure to at least one inflatable bladder disposed between a wall of the container and the interior of the liner, whereby the increase in the bladder volume moves contained product inwardly away from the container wall to encourage that product to run towards the discharge.
  • a flexible liner for a bulk transport container including a discharge at one end, means defining at least one inflatable bladder at or adjacent said one end of the liner, and means to permit the introduction of air under pressure to the bladder to increase the volume thereof when the liner is in use within a container for the transport of product.
  • the liner may be essentially conventional in form, and so manufactured from a plastics (such as polyethylene) film or sheet material of an appropriate gauge, having regard to the intended use of the liner.
  • the plastics film may be tubular, to facilitate manufacture of the liner.
  • the liner may include suspension arrangements to permit it to be fitted within a container, and also an anchoring arrangement for at least the end of the liner opposed to the discharge end, to ensure that the liner remains in the required position during a discharge operation.
  • the liner may have a discharge in the form of a tube which is joined to a wall of the liner at a lower part thereof around an opening therein, and which tube is normally closed by being folded, until the liner is to be emptied.
  • the tube may flare to some extent in the region of its junction with the wall of the liner, so as to define a funnel-like formation.
  • a substantially rigid tube or funnel to be offered to a lower part of a wall of the liner at the time the liner is to be emptied, the discharge then being defined by a simple cut or slit formed in the liner either when the discharge operation is to commence, or during manufacture, the slit then being closed by strippable adhesive tape.
  • the or each bladder may be defined by a flexible sheet, for example of a plastics material similar to that of the liner, secured in a substantially gas-tight manner internally or externally to the liner whereby the liner itself forms a wall of the bladder.
  • the or each bladder is separately formed and comprises a flexible substantially closed bag-like structure which is attached to the liner at the required position.
  • An inflation pipe may communicate with the bladder, to permit the bladder to be inflated from a position external of the container.
  • a pipe may be furnished with a one-way valve, so that once the bladder has been inflated, it remains in that condition.
  • the emptying operation may be performed by cyclically inflating the bladder, in which case no valve need be provided.
  • Further inflatable bladders may be provided on the liner at other positions so as to assist the discharge of product.
  • two further bladders may be disposed in the region of the lower edges of the liner, one on each side thereof and part-way along the length of the liner.
  • Another possibility would be to provide one or more bladders under the lower surface of the liner; these bladders may be inflated sequentially towards the discharge end of the liner, so as to move product within the liner towards the discharge end.
  • the bladders may be inflated either simultaneously, or in a sequence which is chosen to assist the movement of product towards the discharge.
  • the bladder itself may be provided with a number of internal compartments, which may be inflated sequentially from one end of the bladder.
  • the internal compartments may be inflated in sequence from the end of the bladder further from the discharge end. This may be achieved by providing an inflation pipe opening into the furthest compartment, there being relatively small openings between adjacent compartments to permit air to flow from one compartment to the next.
  • Figure 1 is a diagrammatic, partially cut-away view of a container fitted with a liner of this invention
  • Figure 2 is a view similar to that of Figure 1, but with the container doors removed and showing the liner bladder configuration
  • Figure 3 is a vertical cross-section through the container, in the region of the discharge end thereof;
  • Figure 4 shows in greater detail the bladder of Figures 2 and 3;
  • Figure 5 shows an alternative form of bladder
  • Figure 6 shows yet another form of bladder, which is inflatable sequentially from one end.
  • a conventional container 10 of a kind used for the transport of a wide variety of goods and products.
  • the container has a pair of rear-opening doors 11, but to permit the container to be used for the transport of powder-like products in bulk in association with an internal liner 12, the lower region of the doors 11 are provided with a gate 13 which may be lifted as shown in Figure 1 whilst leaving the doors 11 closed, to give access to a discharge 14 of the liner.
  • the discharge 14 is in the form of a funnel 15 made from essentially the same material as the liner and secured thereto so as to communicate with the interior of the liner.
  • the funnel 15 leads into a short discharge tube 16. Before the container is to be emptied, the tube 16 is closed and folded away with the funnel 15 and the gate 13 remains closed. Filling of the liner within the container may be performed through a fill-pipe 17 extending through an opening in the top wall of the container. Two alternative positions for such a fill-pipe are shown in Figure 1.
  • the liner is suspended from the upper region of the container by suitable elements in a manner known in the art.
  • the end of the liner remote from the discharge 16 is secured to the base of the container 10 by means of adhesive strips 18. These serve to anchor the liner against slippage, during an emptying operation by tipping of the container, towards the discharge end.
  • FIGS 2 and 3 show a modification of a conventional liner, to assist the emptying thereof.
  • Disposed in the two lower corner regions 19 of the liner are two inflatable bladders 20, one on each side respectively of the liner.
  • Each bladder is in the form of a substantially closed tube, secured to the outer surface of the liner 12 by means of adhesives, conveniently in tape form (not shown) .
  • Each bladder 20 extends along the length of the liner for a short distance, and also overlies both a part of the side wall of the liner and a part of the base wall thereof.
  • Each bladder is provided with an inflation pipe 22 which leads away from the liner. Prior to a discharge operation, the two inflation pipes 22 may be folded to lie within the container, but may become accessible on opening the gate 13.
  • Each pipe 22 extends into the respective bladder 20, through a relatively flexible tube 23, which tube terminates within the bladder closely adjacent a side wall thereof. The tube 23 may readily be collapsed against an adjacent wall of the bladder, and so may serve as a kind of flap valve to retain air under pressure within the bladder.
  • Figure 5 shows an alternative form of bladder which may be used instead of that illustrated in Figures 2 and 4.
  • the bladder of Figure 5 is of essentially the same construction as that of Figure 4, but extends for a greater length along the sides of the liner.
  • the bladder of Figure 6 is, externally, similar to that of Figure 5, but is internally divided into a number of separate compartments by welds 24 between the opposed parts of the tube defining the bladder.
  • a relatively narrow opening 25 is formed in each weld, whereby air may move from one compartment to the next adjacent compartment.
  • the inflation pipe 22 and tube 23 extend within the bladder to the end compartment 26, so that on supplying air to the pipe 22, this compartment 26 will inflate first. Air will bleed through the openings 25 so as gradually to inflate each compartment in turn, back towards the end of the liner.
  • the pipe 22 and tube 23 could extend externally of the bladder, and communicate through the bladder wall to the end compartment 26.
  • the gate 13 When the container is to be emptied, the gate 13 is raised and the discharge 14 of the liner is unfolded. At the same time, the inflation pipes 22 are pulled clear of the container itself, to permit the connection of an airline thereto. The container is then lifted at the end remote from the discharge 14, so as to cause contained product to flow under gravity out of the discharge. As shown on the right-hand side of Figure 3, there is a tendency for product to accumulate in the lower corner regions of the container, at the discharge end thereof. However, by inflating the bladders 20, by means of an airline connected to the two pipes 22, the bladders will expand in volume into the interior of the container, as shown on the left- hand side of Figure 3. This moves the product away from the base and side wall corner regions of the container and encourages that product to flow into the funnel 15 for discharge from the container.
  • the bladders may be provided with a simple inflation pipe and no flap valve (tube 23), so that the bladders will remain inflated only so long as an airline is connected thereto. In this way, the bladders may be inflated cyclically as emptying progresses, to minimise the likelihood of product accumulating in the lower corner regions of the liner.
  • bladders shown respectively in Figures 5 and 6 may be suitable for use with products which flow less easily, so as to encourage the products to move towards the discharge 14 of the liner.
  • the liner is removed from the container and is disposed of in an environmentally- acceptable manner - and preferably by being recycled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Doublure souple (12) constituant l'un des éléments d'un procédé de déchargement d'un conteneur (10). Ledit conteneur muni de ladite doublure (12) est pourvu d'au moins une vessie gonflable placée entre une paroi du conteneur et l'intérieur de la doublure (12). L'augmentation de volume de la vessie (20) lorsqu'on la gonfle repousse le produit vers l'intérieur en l'éloignant de la paroi, ce qui en facilite le déchargement. On peut prévoir deux vessies (20) placées chacune dans ou près d'un coin inférieur (19) de l'extrémité de déchargement (14) de la doublure (12) et qu'on gonfle pendant la dernière phase du déchargement du produit.
PCT/GB1994/001477 1993-07-08 1994-07-07 Doublures pour conteneurs Ceased WO1995001925A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9600109A GB2295606B (en) 1993-07-08 1994-07-07 Container liners
AU70808/94A AU7080894A (en) 1993-07-08 1994-07-07 Container liners

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9314095A GB9314095D0 (en) 1993-07-08 1993-07-08 Container liners
GB9314095.2 1993-07-08

Publications (1)

Publication Number Publication Date
WO1995001925A1 true WO1995001925A1 (fr) 1995-01-19

Family

ID=10738458

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1994/001477 Ceased WO1995001925A1 (fr) 1993-07-08 1994-07-07 Doublures pour conteneurs

Country Status (3)

Country Link
AU (1) AU7080894A (fr)
GB (2) GB9314095D0 (fr)
WO (1) WO1995001925A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001496A1 (fr) * 1995-06-24 1997-01-16 Philton Polythene Converters Limited Garnitures internes de conteneurs
FR2755089A1 (fr) * 1996-10-25 1998-04-30 Bienvenu Danielle Systeme anti-pollution pour les petroliers
EP1101712A1 (fr) 1999-11-18 2001-05-23 Caretex A/S Garniture intérieure pour récipient avec moyens de déplacement pour faciliter le déchargement du contenu d'une telle garniture
EP1354822A1 (fr) * 2002-04-17 2003-10-22 Cobra Containers S.p.A. Contenant pour des produits en vrac
US9090398B2 (en) 2007-05-04 2015-07-28 Emd Millipore Corporation Disposable processing bag with alignment feature

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP261198A0 (en) * 1998-03-27 1998-04-23 Tasrail Pty Ltd Method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2027842A1 (de) * 1969-06-07 1971-01-21 Stamicarbon N V , Heerlen (Nieder lande) Versandbehälter mit herausnehmbarer Futtereinlage
GB2110192A (en) * 1981-10-02 1983-06-15 Mobilcraft Method of and apparatus for discharging flowable material from a container
DE3219910A1 (de) * 1982-05-27 1983-12-01 Sigurd 4200 Oberhausen Harms Auflockerungseinrichtung fuer schuettgueter als austragshilfe fuer behaelter
EP0538563A2 (fr) * 1991-07-30 1993-04-28 Insta-Bulk, Inc. Combinaison d'un garniture interne avec un réceptacle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4854801A (en) * 1987-04-03 1989-08-08 Flexair, Inc. Bulk storage bin with pneumatically assisted discharge
GB2237559A (en) * 1989-11-02 1991-05-08 Joseph Patrick Dempsey Lined containers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2027842A1 (de) * 1969-06-07 1971-01-21 Stamicarbon N V , Heerlen (Nieder lande) Versandbehälter mit herausnehmbarer Futtereinlage
GB2110192A (en) * 1981-10-02 1983-06-15 Mobilcraft Method of and apparatus for discharging flowable material from a container
DE3219910A1 (de) * 1982-05-27 1983-12-01 Sigurd 4200 Oberhausen Harms Auflockerungseinrichtung fuer schuettgueter als austragshilfe fuer behaelter
EP0538563A2 (fr) * 1991-07-30 1993-04-28 Insta-Bulk, Inc. Combinaison d'un garniture interne avec un réceptacle

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001496A1 (fr) * 1995-06-24 1997-01-16 Philton Polythene Converters Limited Garnitures internes de conteneurs
FR2755089A1 (fr) * 1996-10-25 1998-04-30 Bienvenu Danielle Systeme anti-pollution pour les petroliers
EP1101712A1 (fr) 1999-11-18 2001-05-23 Caretex A/S Garniture intérieure pour récipient avec moyens de déplacement pour faciliter le déchargement du contenu d'une telle garniture
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
EP1101712B1 (fr) * 1999-11-18 2003-03-12 Caretex A/S Garniture intérieure pour récipient avec moyens de déplacement pour faciliter le déchargement du contenu d'une telle garniture
EP1354822A1 (fr) * 2002-04-17 2003-10-22 Cobra Containers S.p.A. Contenant pour des produits en vrac
US6736296B2 (en) 2002-04-17 2004-05-18 Cobra Containers S.P.A. Container for carrying loose products
US9090398B2 (en) 2007-05-04 2015-07-28 Emd Millipore Corporation Disposable processing bag with alignment feature
US9187240B2 (en) 2007-05-04 2015-11-17 Emd Millipore Corporation Disposable processing bag with alignment feature
US9272840B2 (en) 2007-05-04 2016-03-01 Emd Millipore Corporation Disposable processing bag with alignment feature
US9999568B2 (en) 2007-05-04 2018-06-19 Emd Millipore Corporation Disposable processing bag with alignment feature

Also Published As

Publication number Publication date
AU7080894A (en) 1995-02-06
GB9600109D0 (en) 1996-03-20
GB9314095D0 (en) 1993-08-18
GB2295606B (en) 1997-02-26
GB2295606A (en) 1996-06-05

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