EP0265103A2 - Mittelgrosse Schüttgutcontainer - Google Patents

Mittelgrosse Schüttgutcontainer Download PDF

Info

Publication number
EP0265103A2
EP0265103A2 EP87308762A EP87308762A EP0265103A2 EP 0265103 A2 EP0265103 A2 EP 0265103A2 EP 87308762 A EP87308762 A EP 87308762A EP 87308762 A EP87308762 A EP 87308762A EP 0265103 A2 EP0265103 A2 EP 0265103A2
Authority
EP
European Patent Office
Prior art keywords
container
container according
double walled
walled portions
base
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.)
Granted
Application number
EP87308762A
Other languages
English (en)
French (fr)
Other versions
EP0265103B1 (de
EP0265103A3 (en
Inventor
Alan Martien Dijksman
Michael John Willis
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of EP0265103A2 publication Critical patent/EP0265103A2/de
Publication of EP0265103A3 publication Critical patent/EP0265103A3/en
Application granted granted Critical
Publication of EP0265103B1 publication Critical patent/EP0265103B1/de
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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • 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
    • B65D2588/00—Large container
    • B65D2588/16—Large container flexible
    • B65D2588/162—Flexible intermediate bulk containers [FIBC]
    • B65D2588/165—FIBC on a pallet base

Definitions

  • This invention relates to intermediate bulk containers (IBC's), and in particular to flexible intermediate bulk containers.
  • IBC's intermediate bulk containers
  • Such flexible containers which typically have a capacity of 0.5 to 3 m3, are generally in the form of sacks or bags and are widely used for the packaging, for transport and storage, of particulate materials, for example chemicals and fertilisers in bulk quantities.
  • a flexible container typically when filled a flexible container has a cylindrical configuration of diameter 0.8 to 1.5 m and a height of 0.5 to 1.5 m.
  • EP-A-80839 there is described an arrangement con­sisting of a flexible intermediate bulk container and a cradle therefor to support outer portions of the base of the intermediate bulk container above the surface on which the base rests.
  • the cradle enables the tines of a fork-lift truck to be inserted beneath the outer portions of the base of the intermediate bulk container so that the latter, preferably together with the cradle, can be lifted.
  • the flexible intermediate bulk container of the present invention need not be used in conjunction with such a cradle, but it is particularly beneficial when it is so used.
  • a flexible intermediate bulk container has to be sufficiently strong to carry typically 0.5 to 3 m3 of material. If stacked, as preferred, the containers have to withstand considerable hoop stresses to enable a stable stack to be made. In addition it is generally desirable that the container, when used for fertiliser or the like, is impervious in order to protect the container contents from the weather.
  • the present invention provides a flexible intermediate bulk container comprising a single piece of tubular material having a side wall of generally cylindrical configuration, when filled, said side wall having at least two double-walled portions, having single walled portions spaced between said double-walled portions, at least two of said double-­walled portions having a flap extension, said two or more flap extensions being joined to form a base to said container.
  • each of said double-walled portions has an integral flap extension.
  • the two flap extensions are fastened together so as to form a base to the container.
  • the two flap extensions are fastened together at a region equidistant from the respective side walls from which they integrally extend.
  • the flap extensions extend from both the inner and outer walls of each of said double-walled portions so that the base of the container is double-walled.
  • the contruction of the present invention requires only one region of fastening. This is advantageous because the cost of fastening and the labour involved is a significant factor in the economics of the manufacture of intermediate bulk containers.
  • the fastening may be in any convenient way, for example stitching with a suitable thread, and/or using a layer, line or spots of adhesive and/or an adhesive tape or patch.
  • the base to the container is formed by fastening, with, in a preferred embodiment, about half of said base connected to the side wall by being integrally formed. Therefore about half of the said base is not connected to the side wall thus forming diametrically opposite gaps.
  • the side wall assumes a generally cylindrical configuration and the base of the container assumes an approximate square configuration.
  • the diametrically opposite gaps between the base and side wall can be closed by fastening means. This is not preferred as this introduces two further operations into the manufacture of the container. In a preferred aspect the gaps are not closed; the particulate material being stored or transported being held in an inner liner.
  • this inner liner is of a plastics material and, of course, the liner prevents particulate material from escaping through the gaps between the base and side wall of the container.
  • the inner liner need not be very strong as the outer tubular material forming the container withstands the stresses imposed upon the system.
  • the inner liner is fastened to the container, for example by means of an adhesive, during the manufacture in order to ensure accurate positioning of the liner.
  • the fastening need not be overall; indeed the liner may be simply held in place by a line, or spots, of adhesive.
  • the tubular material is preferably a fabric woven from fibres or tapes of a natural or synthetic material, for example of of fabric weight 100 to 200 g.m ⁇ 2, such as a polyolefin tape, for example a high density polyethylene or oriented polypropylene.
  • the tubular material can be a film of plastics material, preferably an oriented film. In the latter case the direction of maximum orientation in the film should be parallel to the hoop direction of the container.
  • the inner liner if present, is preferably an impermeable film of a plastics material. It need not be very tough but is preferably of waterproof material.
  • the flexible intermediate bulk containers of this invention can be used with a cradle.
  • the supporting cradle generally comprises a pair of supporting members disposed beneath the base of the container so that the container can sag into the space between the supporting members to a depth substantially equal to the height of the cradle, the supporting members being connected so that the maximum spacing between said supporting members, and their height, is sufficient to permit the interaction of the times of a fork-lift truck with the supporting members to permit lifting.
  • the containers of the present invention are designed to be handled by means of the supporting cradle.
  • the end user may wish to lift the container from the supporting cradle prior to, or during, emptying.
  • Such lifting can be accomplished by direct lifting of the double-walled portions of container, where of course there is greater strength, for example using conventional lifting gear such as clamps or the like.
  • a separate web or rope may be inserted into the double walled sections. Such a web or rope is accessible to the end user in the single-walled regions and may be lifted by lifting gear.
  • the container has at least one area having reinforcing threads woven in it. More suitably there is a plurality of such areas. These areas having reinforcing threads provide additional strength and facilitate the lifting from above of the container by the end-­ user's lifting gear. Conveniently these areas having reinforcing threads are provided in the form of bands running in the warp direction of the sleeve, that is from top to bottom.
  • the regions of greatest stress on lifting are at the ends of each double-walled portion. Therefore it is preferred that the bands of reinforcing threads are positioned to strengthen these regions, acting as a "rip-stop".
  • the container is made from a single piece of tubular material so that the bottom of the container also has bands of reinforcing threads.
  • the reinforcing threads are conveniently of any sythetic polymer, such as polyester, polyolefin or polyamide.
  • FIG 1 there is shown a length of tubular woven poly­propylene 1 having bands 2 of reinforcing threads running in the warp direction.
  • the single piece of tubular material is shown in perspective in Figure 2 with the reinforcing threads omitted for greater clarity.
  • the tubular material is cut along lines AB, BC, CD, DE, EF, GH, HI, IJ, JK, KL, AB', B'C', C'D', D'E', E'F, GH', H'I', I'J'. J'K', and K'L. This is a simple operation that is readily performed automatically.
  • the relative proportions in which these cuts are made can vary considerably, for instance in Figure 2, BC is shown as equal to BJ but it can be equal to or greater than BJ.
  • the portion BCDE is folded inwards about dotted line BE so that edge CD meets edge JI.
  • portion B'C'D'E' is folded in­wards about line B'E' so that edge C'D' meets J'I'.
  • Figure 3 shows the configuration thus achieved.
  • Figure 4 shows the same configuration when viewed from an angle.
  • Edges JI, DC, D'C' and J'I' are folded inwards to meet at a points G and L equidistant from side wall portions 4,5 and are fastened by stitching to result in the configuration shown in plan view in Figure 5 where stitching 6 fastens the edges.
  • the side wall 3 assumes a slightly rounded configuration leaving gaps 7a, 7b at G and L between the said side-wall and the newly formed container base. As stated hereinbefore these gaps can be closed by stitching, glueing, taping or any other means.
  • FIG 6 shows the detail of the upper part of a con­tainer provided with two lifting loops.
  • Each of the loops 8a, 8b is threaded through one double walled portion of the side wall. Sufficient material is provided so that both loops are able to be lifted by the same hook.
  • the loops may be of any conventional material and conveniently a length of said webbing is threaded through the double-walled portion, cut off and the two ends of the webbing are stitched together to form a continuous loop.
  • the inner liner may be any suitable liner known in the IBC art, particularly suitable liners include those of EP-A-80839.
  • the liner is conveniently formed from a lay-flat tube of impervious plastics film, eg polyethylene of thickness 200 ⁇ m by folding operations as shown in Figures 7 to 10, to give a base region of generally hexagonal configuration QRSTUV in the lay-flat state.
  • the base is formed in conventional manner by folding corners Y, Z of the bottom of the tube along lines QW, QX and TW, TX respectively into the lay-flat tube to give the configuration shown in Figure 8.
  • the upper triangular flap QWT is folded upwards about line QT to give the configuration of Figure 9.
  • the corners W, X are then folded about lines RS and UV respectively towards each other to give the hexagonal configuration of Figure 10. This configuration can then be secured by adhesion.
  • FIG. 11 there is shown an embodiment according to the present invention comprising a container having double-walled portions 4,5, sealed together at 18, a liner 9, filled with a particulate material, the container having a double-walled base supported by a surface 10.
  • the liner 9 is fastened to the container in conventional manner for example by a line of spots 12a, 12b of a hot melt adhesive.
  • the outer portions of the container base are supported from surface 10 by a wooden cradle 11, shown in perspective in Figure 12.
  • the dimensions of the cradle are such that the tines of a forklift truck can be inserted in the openings 13a, 13b of the cradle.
  • the intermediate bulk container is preferably filled whilst positioned on the cradle as this enables the requisite amount of 'sag' to be achieved, and by using conventional vibratory filling devices the top of the particulate filling material can be rendered substantially flat. It may then be advantageous, after filling to substantially eliminate the air within the liner and to fold down the top of the liner material.
  • the bulk of the weight is transmitted directly to the fork-lift truck tines by inter-­particle reaction. Only a relatively small proportion of the load i.e. that corresponding approximately to the hatched area 14 has to be transmitted to the fork-lift tines via tensile forces in the material of the base of the container.
  • the size of the hatched area 14 for any given intermediate bulk container/cradle combin­ation will depend on the nature of the particulate material within the IBC.
  • the length of tubular material 1, as partially depicted in Figure 1 can be cut to form a number of containers without any wastage of material.
  • Figure 13 wherein 15, 16 and 17 represent the material to form three containers of equal dimensions.
  • Container 15 is cut out as described in relation to Figure 1; the tubular material is rotated through 90° about the cylindrical axis and container 16 is cut out (this container 16 is upside down in relation to container 15, but of course this makes no difference as the cut material is presented to the folding machine in the desired orientation); the tubular material is again rotated through 90° and the container 17 is cut out.
  • section A1, A2, A3 and A4 are corresponding sections in the 4 containers.
  • A1 and A4 are upside down with respect to A1 and A3.
  • the reinforcing bands as shown in 2 on Figure 1 could not be present. Instead they would be positioned as shown partially in Figure 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP87308762A 1986-10-15 1987-10-02 Mittelgrosse Schüttgutcontainer Expired - Lifetime EP0265103B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8624697 1986-10-15
GB868624697A GB8624697D0 (en) 1986-10-15 1986-10-15 Intermediate bulk containers

Publications (3)

Publication Number Publication Date
EP0265103A2 true EP0265103A2 (de) 1988-04-27
EP0265103A3 EP0265103A3 (en) 1989-10-25
EP0265103B1 EP0265103B1 (de) 1991-12-04

Family

ID=10605776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308762A Expired - Lifetime EP0265103B1 (de) 1986-10-15 1987-10-02 Mittelgrosse Schüttgutcontainer

Country Status (8)

Country Link
EP (1) EP0265103B1 (de)
DE (1) DE3774998D1 (de)
ES (1) ES2028097T3 (de)
FI (1) FI874435A (de)
GB (1) GB8624697D0 (de)
IE (1) IE872669L (de)
NO (1) NO874221L (de)
ZA (1) ZA877510B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051617A2 (es) * 1991-12-30 1994-06-16 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
ITUA20162033A1 (it) * 2016-03-25 2017-09-25 Illycaffe Spa Assieme di confezionamento per lo stoccaggio di caffè tostato e macinato e metodo di riempimento

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1581438A (en) * 1977-09-05 1980-12-17 Lolift Uk Ltd Containers
GB2092990A (en) * 1981-02-13 1982-08-25 Nyborg Plast Bag for bulk material
GB2097755A (en) * 1981-05-01 1982-11-10 Mulox Ibc Ltd Container bag
EP0080839A1 (de) * 1981-11-26 1983-06-08 Imperial Chemical Industries Plc Behälter für Schüttgüter
EP0154943A2 (de) * 1984-03-15 1985-09-18 Oy W. Rosenlew Ab Flexible Behälter zum Fördern und Lagern von Schüttgut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1581438A (en) * 1977-09-05 1980-12-17 Lolift Uk Ltd Containers
GB2092990A (en) * 1981-02-13 1982-08-25 Nyborg Plast Bag for bulk material
GB2097755A (en) * 1981-05-01 1982-11-10 Mulox Ibc Ltd Container bag
EP0080839A1 (de) * 1981-11-26 1983-06-08 Imperial Chemical Industries Plc Behälter für Schüttgüter
EP0154943A2 (de) * 1984-03-15 1985-09-18 Oy W. Rosenlew Ab Flexible Behälter zum Fördern und Lagern von Schüttgut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051617A2 (es) * 1991-12-30 1994-06-16 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
ITUA20162033A1 (it) * 2016-03-25 2017-09-25 Illycaffe Spa Assieme di confezionamento per lo stoccaggio di caffè tostato e macinato e metodo di riempimento

Also Published As

Publication number Publication date
EP0265103B1 (de) 1991-12-04
IE872669L (en) 1988-04-15
FI874435A (fi) 1988-04-16
DE3774998D1 (de) 1992-01-16
GB8624697D0 (en) 1986-11-19
FI874435A0 (fi) 1987-10-08
NO874221L (no) 1988-04-18
EP0265103A3 (en) 1989-10-25
ZA877510B (en) 1988-08-31
NO874221D0 (no) 1987-10-09
ES2028097T3 (es) 1992-07-01

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