EP0041586A1 - Réceptacle flexible pour le transport et le stockage de marchandises en vrac - Google Patents

Réceptacle flexible pour le transport et le stockage de marchandises en vrac Download PDF

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Publication number
EP0041586A1
EP0041586A1 EP80200521A EP80200521A EP0041586A1 EP 0041586 A1 EP0041586 A1 EP 0041586A1 EP 80200521 A EP80200521 A EP 80200521A EP 80200521 A EP80200521 A EP 80200521A EP 0041586 A1 EP0041586 A1 EP 0041586A1
Authority
EP
European Patent Office
Prior art keywords
container
walls
outer walls
openings
flexible container
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
EP80200521A
Other languages
German (de)
English (en)
Other versions
EP0041586B1 (fr
Inventor
Hans Bjorke
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
Priority to DE8080200521T priority Critical patent/DE3069657D1/de
Priority to AT80200521T priority patent/ATE10354T1/de
Priority to EP80200521A priority patent/EP0041586B1/fr
Publication of EP0041586A1 publication Critical patent/EP0041586A1/fr
Application granted granted Critical
Publication of EP0041586B1 publication Critical patent/EP0041586B1/fr
Expired 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
    • 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 a flexible container for transportation and storage of bulk material, especially free-flowing powdery material.
  • the container comprises a double-walled cylindrical body having inner and outer walls formed by folding a cylindrical member back along itself at about its centre.
  • Most of the containers used today are made from at least one piece of woven fabric sewn together to form containers.
  • One embodiment of the containers according to US-patent No. 4,136,723, is a container made from one piece of material folded double and sewn together to form a single-walled container with integral lifting loops.
  • the said container has a square base, and the bottom is made from at least four separate flaps each of which have free lateral edges and which are direct extensions of the container walls.
  • the flaps are joined together in pairs to form joints that cross at a single point.
  • Such a container usually requires an inner bag of impervious material to avoid loss of the container's content through the woven material of the container itself.
  • Another object of the invention is to provide a particularly strong container with the minimum use of material and labour.
  • the idea is that it should be economical to discard the container after it has been used only once, and that it should be so versatile in use that it can be employed for such different materials as dangerous materials and food stuffs.
  • the cylindrical body can also be made from at least two flat-woven pieces of material which are sewn together. Containers thus made will, however, be weaker than those made from circular-woven material.
  • the lifting arrangements shown in the British patent previously referred to, were considered impractical and too expensive.
  • the inventor found that by making at least two openings in the upper part of the outer wall of a double-walled container., the upper container opening could be closed easily, and there would also be formed integrated lifting loops suitable for lifting the container by hooks or forks.
  • the said openings being parallel to the longitudinal axis of the container, would not weaken the container and lifting loops thus formed proved to be very strong.
  • the openings start at the very top of the outer container wall and extend downward to a length of about one sixth of the containers circumference. By using two openings, the width of each lifting loop will be one half of the container's circumference.
  • the lower openings of the container can be closed in several ways to form the container bottom.
  • both the inner and the outer walls should be closed either before of after folding the cylindrical member back along itself when forming the double-walled container.
  • the inner and outer walls may be closed in different ways though.
  • the simplest method of closing to sew a single seam along the lower openings of each of the two container walls.
  • a strong bottom can be made by joining flaps which are direct extensions of the container walls and thereby forming a bottom being at least a double one. Such bottoms can be formed by sewing or by glueing laminated flaps together, thus obtaining a square base.
  • the invention also comprises further features which are of special importance when the container is being filled.
  • two short seams can be made defining the filling opening of the container.
  • This opening can be of the same size as the spout used to fill material into the container.
  • a ring preferably of flexible material, can be inserted around the inner walls. The said ring would be about the same size as the filling spout. This ring will also be advantageous when closing the upper opening of the container.
  • the container can also be equipped with a discharge spout which is an extension of the inner walls and thereby allowing discharge of the container without contaminating its content.
  • the double-walled container can be made from woven fabric, and the cylindrical member is preferably made by circular weaving. At least the inner walls may be laminated to form an impervious inner container.
  • the container may also be equipped with an inner bag of for instance polyethylene.
  • Fig. 1 shows the deflated cylindrical member having a length which is twice that of the double-walled container and consisting of section 1 forming the outer walls and section 2 forming the inner walls.
  • the container is formed by folding section 1 back along section 2 along the central line 5 and closing the two openings of the sections at 6.
  • At least two openings 4, are made in section 1, extending downwards from the folding line 5 to a length of about W/3, W being the width of the deflated piece of material.
  • the length of the openings 4 is not very critical, but it has been found that a length of W/3 is optimal using two openings 4 which are situated diametrically or right across each other.
  • Fig. 2 shows the double-walled container where section 2 forms the inner walls and section 1 the outer walls. Both of the sections are closed whereby a double bottom is formed.
  • the container's filling opening 9 is shown in a closed state by closing means 8.
  • the inflated cylindrical member shown in Fig. 3 has a total length of L and a width W in the inflated state. Including the length of the bottom flaps 10, each of the sections 1 and 2 has a length of L/2.
  • section 2 there is provided two short seams 11, extending downwards from the folding line 5.
  • a ring 8 (Fig. 2) of rubber or the like, can be inserted around the seams 11 before section 1 is folded back along section 2. This ring 8 is used to fasten the containers to the filling spout during filling, and it will also make it easier to close the filled container.
  • the openings 4 which form the lifting loops 7 have a length of W/3.
  • FIG. 3 section 1 and 2 shown with two equally large flaps 10.
  • Each of the sections 1 and 2 can, however, be equipped with from 2-4 flaps of the same size as that shown in Fig. 3.
  • the number of flaps to be chosen depends on the strength required for the container's bottom.
  • the most preferred size for the flaps 10 is W/2 times W/2, which gives the container square bottom.
  • the flaps can be sewn together or laminated and glued.
  • flaps a and b are joined to form an outer double bottom and flaps a' and b' form an inner double bottom.
  • Extra seams may also be formed at the edges 12 along the lower parts of section 1 and 2.
  • the sections 1 and 2 can be reinforced at the edges 12 to give them a denser warp and thereby forming a fastening strip for the seams.
  • the bottom can also be formed by first placing a and a' together and sewing at 12, and then b and b' which also are sewn at 12 and thus forming a square base.
  • Fig. 4 shows the double-walled container before lashing.
  • the filling opening 9 defined by the seams 11 is clearly shown on the upper part of the container.
  • the lifting loops are,shown before being made ready for lifting by hooks or forks.
  • At the bottom is shown a circular opening through which the discharge spout can be drawn,
  • the reinforced edges 12 for the bottom seams clearly demonstrate the container's square base.
  • Containers according to the enclosed claims and shown in Fig. 1-4 have several advantages over previously known containers. First of all they have a new type of integrated lifting loops which are an integral part of both the inner and the outer walls of the double-walled container. These loops are very strong as they comprise all the longitudinal threads of both the inner and outer walls. This means that the loops comprises about twice as many longitudinal threads as the loops of the container of the same size and being according to US patent No. 4,136,723.
  • Another advantage of the present container is that its upper opening is completely closed when the loops are made ready for use by simple lashing as shown in Fig. 2. This is a great improvement compared with the container according to British patent No. 1,323,804. which also have a more complicated and expensive bottom construction.
  • the construction of the container may also comprise more than two lifting loops. By making four openings 4 in the outer walls there will be four lifting loops, and this allows the container to be hung such that its opening is square during filling.
  • the combination of the present construction and.the application of a cylindrical member, preferably of round-woven material, produces several advantages. By using a discharge spout the container can be used several times.
  • the construction also permits highly mechanized container production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Refuse Collection And Transfer (AREA)
EP80200521A 1980-06-05 1980-06-05 Réceptacle flexible pour le transport et le stockage de marchandises en vrac Expired EP0041586B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080200521T DE3069657D1 (en) 1980-06-05 1980-06-05 Flexible container for the transportation and storage of bulk material
AT80200521T ATE10354T1 (de) 1980-06-05 1980-06-05 Flexibler behaelter fuer transport und lagerung von schuettgut.
EP80200521A EP0041586B1 (fr) 1980-06-05 1980-06-05 Réceptacle flexible pour le transport et le stockage de marchandises en vrac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80200521A EP0041586B1 (fr) 1980-06-05 1980-06-05 Réceptacle flexible pour le transport et le stockage de marchandises en vrac

Publications (2)

Publication Number Publication Date
EP0041586A1 true EP0041586A1 (fr) 1981-12-16
EP0041586B1 EP0041586B1 (fr) 1984-11-21

Family

ID=8187007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200521A Expired EP0041586B1 (fr) 1980-06-05 1980-06-05 Réceptacle flexible pour le transport et le stockage de marchandises en vrac

Country Status (3)

Country Link
EP (1) EP0041586B1 (fr)
AT (1) ATE10354T1 (fr)
DE (1) DE3069657D1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096949A1 (fr) * 1982-03-01 1983-12-28 Nattrass-Hickey and Sons Limited Réservoir flexible et méthode de construction
GB2149382A (en) * 1983-11-09 1985-06-12 Imag Verlags Ag Container with suspension loop
DE3634337A1 (de) * 1986-10-08 1988-04-21 Dyckerhoff Ag Grosssack
EP0265063A2 (fr) * 1986-09-23 1988-04-27 Bowater Packaging Limited Conteneurs souples pour matières en vrac
EP0378820A1 (fr) * 1988-12-21 1990-07-25 Norsk Hydro A/S Conteneur pour soulever, transporter et stocker des matériaux en vrac
US4944604A (en) * 1987-04-24 1990-07-31 Norsk Hydro A.S. Flexible container comprising several lifting means
EP0510262A1 (fr) * 1991-04-23 1992-10-28 Condepols, S.A. Conteneur flexible pour le transport et le stockage de produits en vrac
DE9312026U1 (de) * 1993-08-12 1993-10-28 Bio Pack Verpackungs Gmbh Co Sackförmige Hülle für den Transportschutz von Möbeln und ähnlichen sperrigen Gütern
ES2049122A1 (es) * 1991-04-23 1994-04-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
FR2831145A1 (fr) 2001-10-19 2003-04-25 Filtisac France Procede de fabrication d'un conteneur souple destine a recevoir des produits en vrac, et conteneur ainsi obtenu

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736859A1 (de) * 1987-10-30 1989-05-18 Kielbassa Herbert Dr Ing Gewebter grosssack fuer schuettgueter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204026C (fr) *
US3106140A (en) * 1958-07-24 1963-10-08 Union Carbide Corp Method for forming multiwall bags
GB1323804A (en) * 1971-09-10 1973-07-18 Shinwa Kagaku Kogyo Kk Packing containers
US4136723A (en) * 1976-06-28 1979-01-30 Norsk Hydro A.S. Flexible container for transportation and storage of bulk material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204026C (fr) *
US3106140A (en) * 1958-07-24 1963-10-08 Union Carbide Corp Method for forming multiwall bags
GB1323804A (en) * 1971-09-10 1973-07-18 Shinwa Kagaku Kogyo Kk Packing containers
US4136723A (en) * 1976-06-28 1979-01-30 Norsk Hydro A.S. Flexible container for transportation and storage of bulk material

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096949A1 (fr) * 1982-03-01 1983-12-28 Nattrass-Hickey and Sons Limited Réservoir flexible et méthode de construction
US4493109A (en) * 1982-03-01 1985-01-08 Frank Nattrass Flexible bulk container with integral lifting loops
GB2149382A (en) * 1983-11-09 1985-06-12 Imag Verlags Ag Container with suspension loop
US4710967A (en) * 1983-11-09 1987-12-01 Imag-Verlage Ag Fur Immaterialguterrecht Double-wall sack made of circular-woven tube with gathered loop
EP0265063A3 (fr) * 1986-09-23 1988-09-07 Bowater Packaging Limited Conteneurs souples pour matières en vrac
EP0265063A2 (fr) * 1986-09-23 1988-04-27 Bowater Packaging Limited Conteneurs souples pour matières en vrac
DE3634337A1 (de) * 1986-10-08 1988-04-21 Dyckerhoff Ag Grosssack
US4944604A (en) * 1987-04-24 1990-07-31 Norsk Hydro A.S. Flexible container comprising several lifting means
EP0378820A1 (fr) * 1988-12-21 1990-07-25 Norsk Hydro A/S Conteneur pour soulever, transporter et stocker des matériaux en vrac
US5002400A (en) * 1988-12-21 1991-03-26 Norsk Hydro A.S. Container for lifting, transportation and storage of bulk material
AU632078B2 (en) * 1988-12-21 1992-12-17 Norsk Hydro A.S Container for lifting, transportation and storage of bulk material
EP0510262A1 (fr) * 1991-04-23 1992-10-28 Condepols, S.A. Conteneur flexible pour le transport et le stockage de produits en vrac
ES2049122A1 (es) * 1991-04-23 1994-04-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
DE9312026U1 (de) * 1993-08-12 1993-10-28 Bio Pack Verpackungs Gmbh Co Sackförmige Hülle für den Transportschutz von Möbeln und ähnlichen sperrigen Gütern
FR2831145A1 (fr) 2001-10-19 2003-04-25 Filtisac France Procede de fabrication d'un conteneur souple destine a recevoir des produits en vrac, et conteneur ainsi obtenu

Also Published As

Publication number Publication date
ATE10354T1 (de) 1984-12-15
EP0041586B1 (fr) 1984-11-21
DE3069657D1 (en) 1985-01-03

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