WO1989007560A1 - Recipient flexible - Google Patents

Recipient flexible Download PDF

Info

Publication number
WO1989007560A1
WO1989007560A1 PCT/FI1989/000025 FI8900025W WO8907560A1 WO 1989007560 A1 WO1989007560 A1 WO 1989007560A1 FI 8900025 W FI8900025 W FI 8900025W WO 8907560 A1 WO8907560 A1 WO 8907560A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner bag
support portion
diameter
receptacle
flexible receptacle
Prior art date
Application number
PCT/FI1989/000025
Other languages
English (en)
Inventor
Peter Björk
Original Assignee
Oy Fluid-Bag Ab
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 Oy Fluid-Bag Ab filed Critical Oy Fluid-Bag Ab
Priority to DE68918850T priority Critical patent/DE68918850T2/de
Priority to EP89902388A priority patent/EP0408570B1/fr
Publication of WO1989007560A1 publication Critical patent/WO1989007560A1/fr
Priority to DK195590A priority patent/DK170926B1/da

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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1656—Flexible intermediate bulk containers [FIBC] for liquids

Definitions

  • the present invention relates to a flexible re ⁇ ceptacle comprising a substantially cylindrical bear- ing support portion and an inner bag, which is posi ⁇ tioned within the support portion, manufactured of a flexible film and provided with valve means for fil ⁇ ling and emptying the inner bag.
  • Receptacles of this kind in sizes of 500... 1500 litres are previously known.
  • the bearing support portion consists of a strong fabric, while the inner bag is manufactured of a relatively thin plastic film.
  • the film shall function as a barri ⁇ er for a material transported in the receptacle and simultaneously, it shall be as flexible as possible. In general, no film can be found which fulfils both requirements entirely and therefore, the film selected constitutes a compromise in most cases.
  • Receptacles of this kind are in most cases mounted on a pallet in such a way that the centre line of the receptacle is perpendicular to the main level of the pallet.
  • the inner bag is usually manufactured of three portions, i.e. two end portions and one man ⁇ tle portion, which are welded together.
  • the inner bag is thus provided with two joints situated in the vici ⁇ nity of the ends of the receptacle. These joints con ⁇ stitute the weakest points of the inner bag, because the durability at these points usually comes up to appr. 75 % of the durability of the film only.
  • the receptacle when the receptacle falls in the direction of the centre line.
  • the receptacle takes a form reminding of a pear with the narrow portion upwards and the broad portion downwards.
  • the lower weld joint of the inner bag is thus exposed to big strains and if the support portion yields much the inner bag can burst at the lower joint, whereby the contents run out.
  • the lower part of the support portion bursts entirely so that it does not give any support to the inner bag at all. Then, it is of great importance that the inner bag is as far as possible prevented from bursting, too.
  • the object of the present invention is to pro ⁇ vide a flexible receptacle, whereby the chances of maintaining the inner bag undamaged in case of a push in the longitudinal direction of the receptacle are greater than in known receptacles of the same kind.
  • the receptacle of the invention is characterized in that the inner bag in a free filled state has substan ⁇ tially the form of an ellipsoid, the biggest diameter of which considerably exceeds the diameter of the support portion, and that the inner bag is situated in the support portion in such a way that its greatest diameter is substantially perpendicular to the centre line of the support portion.
  • an inner bag of the form and size stated above When an inner bag of the form and size stated above is situated within the support portion, it forms folds along the mantle surface of the support portion. This means that the film is not streched to the same extent as in known receptacles, in which the diameter of the inner bag corresponds to the diameter of the support portion, when the support portion due to a push expands laterally.
  • the feature given above re ⁇ sults to that when the support portion bursts entire ⁇ ly, the inner bag takes its free ellipsoid form. The liquid column in the inner bag is then very low, and consequently, the pressure is low, which gives the inner bag greater chances of remaining undamaged than previously.
  • the inner bag has also in a free state the same height as the recepta ⁇ cle, which causes a high pressure within the inner bag. Moreover, it shall be noted that a high and nar- row inner bag is not held up by itself, without outer support, but it falls down, whereby it can easily be damaged.
  • an inner bag of the form stated above can easily be manufactured of only two pieces of film joined together along the edges.
  • the inner bag has then only one joint, which naturally is advantageous from the viewpoint of durability.
  • the joint of the inner bag is flush with the greatest diameter of the bag.
  • the joint will then be situated at the mantle surface of the receptacle at equal distances from the ends of the receptacle. This improves the durability of the inner bag, because the strains are at this point con- siderably less than the strains in the vicinity of the ends of the receptacle, where the joints were situated before.
  • the folds of the inner bag can be made to be distributed evenly along the periphery of the recepta- cle by giving the joint the shape of a polygon.
  • Figure 2 shows the inner bag in a free filled state
  • Figure 3 shows an end view of an empty inner bag and .
  • Figure 4 shows a cross section of the inner bag according to Figure 3.
  • the flexible receptacle of Figure 1 comprises an outer, substantially cylindrical bearing support portion 1, which can consist e.g. of one layer or two layers of a strong fabric of plastic threads.
  • the sup ⁇ port portion is by means not shown fastened to a pal ⁇ let 2 in such a way that the centre line of the sup ⁇ port portion is perpendicular to the main level of the pallet.
  • Both ends of the support portion have an open ⁇ ing situated in the middle, in which opening is ar ⁇ ranged a valve 3.
  • the upper valve is used for filling and the lower for emptying the receptacle.
  • an inner bag 4 of a thin flexible plastic film Within the support portion 1 there is an inner bag 4 of a thin flexible plastic film.
  • the inner bag is dimensioned in such a way that it bears against the inner surface of the support portion when the recepta ⁇ cle is filled.
  • the valves 3 are fastened to the upper and lower end of the inner bag.
  • the inner bag is dimensioned in such a way that it bears against the inner surface of the support portion when the recepta ⁇ cle is filled.
  • the valves 3 are fastened to the upper and lower end of the inner bag.
  • the form has substantially the form shown in Figure 2, when it is filled with gas or fluid without high over-pres ⁇ sure and when it is in a free state, i.e. the form is not influenced by any external restrictions.
  • the form can be characterized as an el ⁇ lipsoid, but it can also be described well as a discus or a round cushion. It is essential that the inner bag is low and broad in a free state and that its greatest diameter or, if the inner bag is angular, the greatest distance between opposite sides considerably exceeds the diameter of the mantle surface of the support por ⁇ tion 1.
  • the inner bag is placed in the support portion in such a way that its greatest diameter, i.e. its main level, is perpendicular to the centre line of the support portion. Because the diameter of the inner bag is 1,5...3,0 times greater than the diameter of the support portion, the inner bag forms folds 5 parallel to the centre line of the support portion and situated at the mantle of the support portion, while the end portions of the inner bag are substantially even.
  • the inner bag 4 is manufactured of two pieces of film, which are joined together along a joint 6 running along the edges of the pieces.
  • the film pieces can be circular or angu ⁇ lar, while the joint 6 preferably consists of a series of connected straight portions, see Figure 3.
  • the film pieces are preferably even in accordance with Figure 4. If the inner bag 4 is manufactured in the way described above, the joint 6 will be situated on the transversal middle level of the support portion, i.e. midway between the ends, which is of decisive impor ⁇ tance for the durability of the inner bag in case of pushes, because this part of the receptacle is seldom exposed to great stresses. Because the inner bag fur ⁇ ther has only one joint, it has a better durability than previous inner bags with two joints.
  • the receptacle When filling the receptacle with fluid, it is at first filled with air, which is then blown out concurrently with feeding fluid into the receptacle. In case of pushes in the vertical direction, a pres ⁇ sure directed horizontally outwards is created in the lower half of the receptacle, due to which this part of the support portion expands. On account of the folds 5, the inner bag 4 can follow the expansion without being damaged. If the support portion splits to such a degree that it does not support the inner bag any more, the inner bag takes the form shown in Figure 2, whereby the pressure within the inner bag is as low as possible, which contributes to maintain the inner bag undamaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Toys (AREA)
  • Tents Or Canopies (AREA)
  • Laminated Bodies (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Prostheses (AREA)
  • Table Devices Or Equipment (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

La présente invention se rapporte à un récipient flexible comprenant une partie de support cylindrique (1) de structure durable et une enveloppe intérieure (4) constituée par un mince film de plastique. Les enveloppes intérieures de ce type connues ont une faible durabilité par rapport à la partie de support. On accroit les chances que l'enveloppe intérieure (4) ne soit pas endommagée en cas de poussée dans le sens longitudinal du récipient en conférant à l'enveloppe intérieure la forme d'un ellipsoïde, dont le plus grand diamètre est considérablement supérieur au diamètre de la partie de support (1).
PCT/FI1989/000025 1988-02-18 1989-02-15 Recipient flexible WO1989007560A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE68918850T DE68918850T2 (de) 1988-02-18 1989-02-15 Flexibler behälter.
EP89902388A EP0408570B1 (fr) 1988-02-18 1989-02-15 Recipient flexible
DK195590A DK170926B1 (da) 1988-02-18 1990-08-16 Fleksibel beholder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880768A FI83411C (sv) 1988-02-18 1988-02-18 Flexibel behållare
FI880768 1988-02-18

Publications (1)

Publication Number Publication Date
WO1989007560A1 true WO1989007560A1 (fr) 1989-08-24

Family

ID=8525941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000025 WO1989007560A1 (fr) 1988-02-18 1989-02-15 Recipient flexible

Country Status (8)

Country Link
EP (1) EP0408570B1 (fr)
JP (1) JP2713484B2 (fr)
AT (1) ATE112749T1 (fr)
AU (1) AU3062489A (fr)
DE (1) DE68918850T2 (fr)
DK (1) DK170926B1 (fr)
FI (1) FI83411C (fr)
WO (1) WO1989007560A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000009404A2 (fr) * 1998-08-11 2000-02-24 Paper Systems, Inc. Emballage en vrac
EP1103486A1 (fr) * 1999-11-27 2001-05-30 Protechna S.A. Récipient de transport et de stockage pour liquides et procédé de fabrication de la poche interne dudit récipient
EP1736421A1 (fr) * 2005-06-24 2006-12-27 Eurokeg B.V. Conteneur pour un fluide, en particulier un liquide, et un procedée pour sa production
US7798365B2 (en) 2005-08-18 2010-09-21 Portec Rail Products, Inc. Bulk transfer dispensing device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270589A (en) * 1978-07-20 1981-06-02 Siemens Aktiengesellschaft Container of variable volume
DE3440367A1 (de) * 1984-11-05 1986-05-07 Hch. Sieger Papier- und Wellpappenwerke KG, 5040 Brühl Verpackungsbehaelter und verfahren zu seiner herstellung und herrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270589A (en) * 1978-07-20 1981-06-02 Siemens Aktiengesellschaft Container of variable volume
DE3440367A1 (de) * 1984-11-05 1986-05-07 Hch. Sieger Papier- und Wellpappenwerke KG, 5040 Brühl Verpackungsbehaelter und verfahren zu seiner herstellung und herrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000009404A2 (fr) * 1998-08-11 2000-02-24 Paper Systems, Inc. Emballage en vrac
WO2000009404A3 (fr) * 1998-08-11 2000-05-18 Paper Systems Inc Emballage en vrac
EP1103486A1 (fr) * 1999-11-27 2001-05-30 Protechna S.A. Récipient de transport et de stockage pour liquides et procédé de fabrication de la poche interne dudit récipient
US6454113B1 (en) 1999-11-27 2002-09-24 Protechna S.A. Transport and storage container for liquids and method for manufacturing the inner container of the transport and storage container
EP1736421A1 (fr) * 2005-06-24 2006-12-27 Eurokeg B.V. Conteneur pour un fluide, en particulier un liquide, et un procedée pour sa production
US7798365B2 (en) 2005-08-18 2010-09-21 Portec Rail Products, Inc. Bulk transfer dispensing device and method
US8550297B2 (en) 2005-08-18 2013-10-08 L.B. Foster Rail Technologies, Inc. Bulk transfer dispensing device and method

Also Published As

Publication number Publication date
DK170926B1 (da) 1996-03-18
JPH03503516A (ja) 1991-08-08
DK195590D0 (da) 1990-08-16
AU3062489A (en) 1989-09-06
EP0408570A1 (fr) 1991-01-23
FI83411B (fi) 1991-03-28
FI880768A0 (fi) 1988-02-18
FI83411C (sv) 1991-07-10
FI880768A (fi) 1989-08-19
ATE112749T1 (de) 1994-10-15
DE68918850T2 (de) 1995-05-11
DE68918850D1 (de) 1994-11-17
EP0408570B1 (fr) 1994-10-12
JP2713484B2 (ja) 1998-02-16
DK195590A (da) 1990-08-16

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