EP0030652A1 - Flexibler Behälter - Google Patents

Flexibler Behälter Download PDF

Info

Publication number
EP0030652A1
EP0030652A1 EP80107324A EP80107324A EP0030652A1 EP 0030652 A1 EP0030652 A1 EP 0030652A1 EP 80107324 A EP80107324 A EP 80107324A EP 80107324 A EP80107324 A EP 80107324A EP 0030652 A1 EP0030652 A1 EP 0030652A1
Authority
EP
European Patent Office
Prior art keywords
container
containers
laminated
flexible
inner bag
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
EP80107324A
Other languages
English (en)
French (fr)
Inventor
Eirik Myklebust
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.)
Norsk Hydro ASA
Original Assignee
Norsk Hydro ASA
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 Norsk Hydro ASA filed Critical Norsk Hydro ASA
Publication of EP0030652A1 publication Critical patent/EP0030652A1/de
Ceased 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]
    • 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

Definitions

  • the present invention relates to flexible containers for the tansport and storage of bulk material.
  • the container comprises lifting loops, preferably integral ones, filling opening, a central section and a bottom section.
  • the container can also be fitted with an inner bag of impervious material.
  • Flexible containers are preferably made from a single piece of woven material, for instance flat woven or circular woven polypropylene.
  • the containers bottom is formet by joining the lower sections of piece of material. According to the latter patent, cuts are made in the lower sections of said piece of material such that several flaps are formed. By joining these flaps in a special manner, there is formed a double bottom, which is stronger than the bottom of a single layer according to the former patent. For most applications, these containers are fitted with an inner bag of impervious material, for instance of polyethylene sheet material.
  • the containers are intended for beeing used only once and are emptied by making a cut through both the woven material and the inner bag. usually the containers are emptied after first having been hoisted up by their lifting loops.
  • the main object of the present invention was to develop a flexible container which was suitable for transport and storage of free flowing material beeing especially sensitive to contamination.
  • One special object was to design such container which would be emptied easily without contaminating by fibres and the like the content of the container when cuts or slitts were made in it during its discharge.
  • a futher object was to retain the container's advantages regarding strenght during hoisting by integral lifting loops and still having a container construction allowing discharge without contaminating the containers content.
  • Food products belong to the products which should not be contaminated by fiber particles and the like.
  • Several types of food are well suited for beeing transported and stored in flexible containers. Extensive use of such containers for this purpose has however been obstructed because of the problems occuring during discharge.
  • Sevaral methods have been proposed for solving the problem, for instance as shown in the perviously mentioned British patent. This way of attacking the problem has however not lead to practical solutions.
  • An other type of solutions have been related to using glue to bind the fibres, but these solutions have not worked, according to expectations. Gluing is labour consuming, the bottom become sticky for some time and when the bottom has been cut, both fiber and glue particles contaminated the product. It has also been tried to use tapes across the bottom. The tapes have however quite often loosened before the container was ready for discharge. Even when the tapes have covered the bottom until it was cut, this method did not completely prevent contamination of the product.
  • the lifting strength in the longitudinal fibers of the woven material was thus utilized as in the case of containers with intregral lifting loops.
  • the relatively free orientations in the warp of the longitudinal fibers can thus be retained and the strenght of every one of these fiber are used during lifting.
  • the container can be manufactured from one piece of material or several ones joined together such that lifting loops are formed which are direct extentions of the container walls and thereby integral parts of them.
  • Fig. 1 there is shown a piece of material 1, preferably of woven material.
  • the opening 3 will in the completed container constitute the filling opening.
  • the material piece 2 will in the completed container form the bottom part and this piece 2 can be of the same material as piece 1, but in addition thereto it is laminated with a plastic sheet.
  • the material piece 1 is firsty joined together at the joints or seems 6 as shown in Fig.3.
  • the material piece 2 can then be joined to the upper section of the container by means of seems 4,7 whereby is formed a container having integral lifting loops 5 and a square bottom 2.
  • the base material for the bottom part does not necessarily have to be made from woven resinous material.
  • Other types of base material can be used if they meet the requirements regarding strength etc.
  • polypropylene fibres be used mono filaments, cotton, nylon and the like, which then is laminated with sheet plastic.
  • a flexible container could for instance be equipped with a bottom made from canvas. Such a solution would however comprise several practical disadvantages.
  • a container according to the invention may be equipped with an inner bag of impervious material which does not give off contaminating particles when cuts are made in it.
  • the most practical material for such a bag would be polyethylene.
  • the present invention thus resulted in a type of flexible containers which can be used for transport of for instance food stuffs and these containers can easily be discharged by cutting their bottom. The discharge does not imply any contamination of the product leaving the container. The most important obstruction for using such containers for .sensitive goods are accordingly removed by means of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
EP80107324A 1979-12-12 1980-11-24 Flexibler Behälter Ceased EP0030652A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO794051A NO145271C (no) 1979-12-12 1979-12-12 Fleksibel beholder (storsekk).
NO794051 1979-12-12

Publications (1)

Publication Number Publication Date
EP0030652A1 true EP0030652A1 (de) 1981-06-24

Family

ID=19885210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107324A Ceased EP0030652A1 (de) 1979-12-12 1980-11-24 Flexibler Behälter

Country Status (5)

Country Link
EP (1) EP0030652A1 (de)
BR (1) BR8008044A (de)
DK (1) DK148298C (de)
FI (1) FI63369B (de)
NO (1) NO145271C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229020A2 (de) * 1986-01-08 1987-07-15 Norsk Hydro A/S Behälter für Massenguttransport und -lagerung
US4944604A (en) * 1987-04-24 1990-07-31 Norsk Hydro A.S. Flexible container comprising several lifting means
WO1993012995A1 (en) * 1991-12-31 1993-07-08 Bowater Packaging Limited Improvements relating to bulk containers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444303A1 (de) * 1973-09-17 1975-04-30 Frank Nattrass Transportbeutel fuer schuettgut
DE2453457A1 (de) * 1973-11-13 1975-05-22 Norsk Hydro As Verpackungssack fuer schuettgut und verfahren zum fuellen und verschliessen des sacks
AT350463B (de) * 1976-06-28 1979-06-11 Norsk Hydro As Flexibler behaelter zum transport und zur lagerung loser gueter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444303A1 (de) * 1973-09-17 1975-04-30 Frank Nattrass Transportbeutel fuer schuettgut
DE2453457A1 (de) * 1973-11-13 1975-05-22 Norsk Hydro As Verpackungssack fuer schuettgut und verfahren zum fuellen und verschliessen des sacks
AT350463B (de) * 1976-06-28 1979-06-11 Norsk Hydro As Flexibler behaelter zum transport und zur lagerung loser gueter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229020A2 (de) * 1986-01-08 1987-07-15 Norsk Hydro A/S Behälter für Massenguttransport und -lagerung
EP0229020A3 (de) * 1986-01-08 1988-09-14 Norsk Hydro A/S Behälter für Massenguttransport und -lagerung
US4944604A (en) * 1987-04-24 1990-07-31 Norsk Hydro A.S. Flexible container comprising several lifting means
WO1993012995A1 (en) * 1991-12-31 1993-07-08 Bowater Packaging Limited Improvements relating to bulk containers

Also Published As

Publication number Publication date
FI803737L (fi) 1981-06-13
NO794051L (no) 1981-06-15
FI63369B (fi) 1983-02-28
DK148298C (da) 1986-02-03
DK528280A (da) 1981-06-13
DK148298B (da) 1985-06-03
NO145271C (no) 1982-02-17
BR8008044A (pt) 1981-06-23
NO145271B (no) 1981-11-09

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Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 19811006

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19840123

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MYKLEBUST, EIRIK