EP0119743A1 - Conteneur en forme de sac - Google Patents

Conteneur en forme de sac Download PDF

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Publication number
EP0119743A1
EP0119743A1 EP84300993A EP84300993A EP0119743A1 EP 0119743 A1 EP0119743 A1 EP 0119743A1 EP 84300993 A EP84300993 A EP 84300993A EP 84300993 A EP84300993 A EP 84300993A EP 0119743 A1 EP0119743 A1 EP 0119743A1
Authority
EP
European Patent Office
Prior art keywords
bag
webbing
fabric
hem
areas
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.)
Withdrawn
Application number
EP84300993A
Other languages
German (de)
English (en)
Inventor
Charles Sydney Futerman
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.)
Rexam DFR China Ltd
Original Assignee
Mulox IBC 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 Mulox IBC Ltd filed Critical Mulox IBC Ltd
Publication of EP0119743A1 publication Critical patent/EP0119743A1/fr
Withdrawn legal-status Critical Current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]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor
    • 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]
    • 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]
    • B65D88/1668—Flexible intermediate bulk containers [FIBC] closures for top or bottom openings

Definitions

  • This invention relates to container bags and in particular container bags for carrying loads in the range of 1 ⁇ 2 to 2 tonnes and known as Intermediate Bulk Containers ( I IBC').
  • an IBC For many purposes it is desirable for an IBC to be capable of being lifted from one single point, for example from the hook of a crane, without a great deal of manipulation being required by operatives. This speeds up the handling process, particularly when loading and discharging at ports.
  • the invention seeks to provide an IBC which may be lifted from a single point, which has adequate strength, and which is easily constructed.
  • a container bag which comprises side walls and a base, the side walls being folded back upon themselves at their upper extremities to form a.hem portion through which is passed a continuous loop of webbing whereby to form a lifting loop for the container bag.
  • the hemmed portion extends completely round the periphery of the upper edges of the side walls of the bag, one or more cut out portions being formed in the hemmed portion to allow access to the loop of webbing carried therein.
  • the fabrics from which the IBC bags of the invention are formed are conventional fabrics for use in this type of container bag and may be woven from polyethylene or polypropylene tape yarns.
  • Preferably however at least the side walls are made from a fabric having reinforced zones or areas of interwoven reinforcing yarn, for example as disclosed in our UK Patent No. 1591091. Where such reinforcing areas are provided, these may be as described in that patent and may be formed of interwoven threads of a higher tensile strength reinforcing yarns such as polyamide, polyester or twisted or fibrillated polypropylene.
  • the bag base may or may not be provided with such reinforcing areas.
  • the webbing which forms the lifting loop may be a woven webbing of synthetic yarns, for example of the type used for car seat belts and IBC lifting loops or may be rope or hawser of suitable strength.
  • the hemmed portion is preferably formed by infolding a first edge of the fabric and then folding a second time whereby to produce a hem having three fabric layers and stitching through the three fabric layers with preferably at least two lines of stitching.
  • reinforcing areas are provided in accordance with our UK Patent No. 1591091, a single fold of fabric to form the hem is sufficient, and instead of continuous line of stitching around the hem the stitching can be confined to the reinforcing areas or zones. Where this is done, it is necessary to employ a suitable stitching pattern to provide the necessary strength of join.
  • the 'box and cross' stitching pattern commonly used for attaching lifting loops to IBC's is an example of a suitable stitching pattern.
  • the IBC body can be made in a variety of ways. For example, it can be made from a circular woven fabric in which case there will be no side seams, and the base will be stitched to the tubular body fabric in the normal manner. Alternatively, it may be made from a full width fabric in which one side seam will be necessary; a half width fabric in which case two side seams will be necessary; or a quarter width fabric in which case there will be four side seams, one at each corner.
  • an IBC generally designated 10 comprises side walls 12 and base 14.
  • the IBC 10 may be constructed according to conventional practice in this field, as for example discussed in our previously mentioned UK Patent.
  • the upper extremities of the side walls 12 are folded back upon themselves as illustrated to form a hemmed portion 16 which is secured by sewing where indicated by arrows A through three layers of fabric. This is better illustrated in figure 5 where it can be seen that two lines of stitching 18 are employed through the three thicknesses of side wall fabric.
  • the hem 16 includes a pocket 20 within which is a continuous length of webbing 22.
  • the hem portion extends substantially completely around the upper periphery of the side walls 12 except that a'cut out portion 24 is left to give access to the webbing 22.
  • webbing 22 is described as being a continuous loop, this loop may be formed either previously or in situ by stitching or otherwise drawing together the ends of a single length of webbing to form a continuous loop.
  • Figure 3 illustrates a filled IBC constructed and described with reference to figures 1, 2 and 5 being lifted from a single point, in this case the hook of a crane 26.
  • the bag is filled with material and the webbing 22 pulled out from the cut away portion 24 and placed on the hook 26. This causes the hem 16 to gather up as illustrated in figure 3 thus closing the top of the IBC.
  • no separate top need be provided.
  • Figure 4 illustrates an alternative form of threading the webbing 22 within the hem portion 16.
  • a double layer of webbing is passed through the hem 16 leaving two free folded ends 28 projecting from the cut out portion 24.
  • One of the ends 28 can then be passed through the fold of the other whereby to interconnect the webbing in 'choker' fashion and the other free end may be passed over the hook 26 or other lifting means.
  • the side wall fabric is provided with reinforced areas 30, for example in accordance with our above mentioned UK Patent, then these may be sewn to one another in the hemmed portion 16 in addition to the stitching 18, for example by means of a single box and cross stitching pattern 32 (figure 6).
  • reinforced body fabric we have found that it is only necessary to form a single hem, as illustrated in figure 7, provided the overlying reinforcing areas 30 are stitched to one another, preferably by means of box and cross stitch patterns 32, and preferably using several patterns on each reinforcing area 30.
  • the lines of stitching 18 going parallel with the hem 16 about the periphery of the bag may be omitted since the stitch patterns 32 through the reinforced areas 30 are sufficiently strong to retain the webbing 22 even at the lifting stresses.
  • FIG 8 A further alternative form is shown is figure 8, where the bag fabric has been cut back between adjacent reinforced areas 30 to form 'flag' portions 34 which are folded over and stitched through at 32.
  • the webbing 22 may be pulled out at one point only between two adjacent flag portions 34, or may be pulled at two or four or more points between adjacent flag portions 34 to provide multiple lifting loops all of which can of course be gathered together and lifted on a single point such as a crane hook 26.
  • a bag was constructed from a twill woven polypropylene fabric having two reinforcing areas per side containing reinforcing yarns of polyamide or polyester.
  • the fabric sides were 160 cm 2 and the base 90 cm 2 .
  • a 30 cm hem was formed as described with relation to figure 5 in which the triple overlap area was 10 cm in width.
  • Heavy duty type 400' blue webbing was threaded within the hem. On testing to destruction the webbing broke at a force of 11 tonnes the hemmed portion 16 remaining intact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP84300993A 1983-03-18 1984-02-16 Conteneur en forme de sac Withdrawn EP0119743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838307637A GB8307637D0 (en) 1983-03-18 1983-03-18 Container bag
GB8307637 1983-03-18

Publications (1)

Publication Number Publication Date
EP0119743A1 true EP0119743A1 (fr) 1984-09-26

Family

ID=10539872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84300993A Withdrawn EP0119743A1 (fr) 1983-03-18 1984-02-16 Conteneur en forme de sac

Country Status (2)

Country Link
EP (1) EP0119743A1 (fr)
GB (1) GB8307637D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194770A (en) * 1986-09-06 1988-03-16 Mulox Ibc Ltd Bags having lifting loops
FR2633592A1 (fr) * 1988-06-29 1990-01-05 Saint Freres Snc Conteneur flexible avec systeme de prehension et de manutention en un seul point de levee, et son procede de fabrication
US5161853A (en) * 1991-10-31 1992-11-10 Polett Walter J Flexible bag
WO1997042101A1 (fr) * 1996-05-03 1997-11-13 Empac Verpackungs Gmbh Recipient pour stockage en vrac, a revetement interieur flexible
WO2020070160A1 (fr) * 2018-10-05 2020-04-09 Linerbenne Contenant souple pour le conditionnement de dechets

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR58122E (fr) * 1948-04-14 1953-09-21 Fermeture et suspension de sacs en papier ou en cellophane
DE2607065A1 (de) * 1976-02-21 1977-08-25 Spohn Kg Sackartiger grossbehaelter fuer den transport und die lagerung insbesondere von schuettguetern
FR2339538A1 (fr) * 1976-01-29 1977-08-26 Windmoeller & Hoelscher Sac en matiere plastique, a soufflets et fond carre
DE2659487A1 (de) * 1976-12-30 1978-07-06 Frank Nattrass Traeger fuer eine zu hebende last
GB1590943A (en) * 1978-01-05 1981-06-10 Miller Weblift Ltd Containers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR58122E (fr) * 1948-04-14 1953-09-21 Fermeture et suspension de sacs en papier ou en cellophane
FR2339538A1 (fr) * 1976-01-29 1977-08-26 Windmoeller & Hoelscher Sac en matiere plastique, a soufflets et fond carre
DE2607065A1 (de) * 1976-02-21 1977-08-25 Spohn Kg Sackartiger grossbehaelter fuer den transport und die lagerung insbesondere von schuettguetern
DE2659487A1 (de) * 1976-12-30 1978-07-06 Frank Nattrass Traeger fuer eine zu hebende last
GB1590943A (en) * 1978-01-05 1981-06-10 Miller Weblift Ltd Containers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194770A (en) * 1986-09-06 1988-03-16 Mulox Ibc Ltd Bags having lifting loops
FR2633592A1 (fr) * 1988-06-29 1990-01-05 Saint Freres Snc Conteneur flexible avec systeme de prehension et de manutention en un seul point de levee, et son procede de fabrication
US5161853A (en) * 1991-10-31 1992-11-10 Polett Walter J Flexible bag
WO1997042101A1 (fr) * 1996-05-03 1997-11-13 Empac Verpackungs Gmbh Recipient pour stockage en vrac, a revetement interieur flexible
WO2020070160A1 (fr) * 2018-10-05 2020-04-09 Linerbenne Contenant souple pour le conditionnement de dechets
FR3086932A1 (fr) * 2018-10-05 2020-04-10 Linerbenne Contenant souple pour le conditionnement de dechets

Also Published As

Publication number Publication date
GB8307637D0 (en) 1983-04-27

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850606

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FUTERMAN, CHARLES SYDNEY