EP0140346A2 - Grand sac de manutention pour produits en vrac - Google Patents

Grand sac de manutention pour produits en vrac Download PDF

Info

Publication number
EP0140346A2
EP0140346A2 EP84112903A EP84112903A EP0140346A2 EP 0140346 A2 EP0140346 A2 EP 0140346A2 EP 84112903 A EP84112903 A EP 84112903A EP 84112903 A EP84112903 A EP 84112903A EP 0140346 A2 EP0140346 A2 EP 0140346A2
Authority
EP
European Patent Office
Prior art keywords
seam
bag
fabric
transport bag
sewn
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
EP84112903A
Other languages
German (de)
English (en)
Other versions
EP0140346B1 (fr
EP0140346A3 (en
Inventor
Rolaf Lehmann
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.)
LOLIFT VERWALTUNGS GmbH
Original Assignee
LOLIFT VERWALTUNGS GmbH
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 LOLIFT VERWALTUNGS GmbH filed Critical LOLIFT VERWALTUNGS GmbH
Priority to AT84112903T priority Critical patent/ATE33474T1/de
Publication of EP0140346A2 publication Critical patent/EP0140346A2/fr
Publication of EP0140346A3 publication Critical patent/EP0140346A3/de
Application granted granted Critical
Publication of EP0140346B1 publication Critical patent/EP0140346B1/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]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor

Definitions

  • the invention relates to a large-capacity transport bag for bulk goods, in which the bag wall consists of a cut of a fiber fabric, which is provided along two cutting edges running in the warp or weft direction with a connecting seam extending over the full bag height.
  • the connecting seam is designed as a double stitch seam carried out on a linking machine with a sewing passage.
  • the bag wall is provided with four further corner seams running parallel to the connecting seam, which are also designed as double stitch seams.
  • the corner seams divide the bag wall into four parallel side walls of the bag.
  • the connecting seam is formed in the middle of one of these side walls.
  • the known transport bag also has a separately sewn-on bottom with an emptying tube sewn on at a central point, one also attached separately sewed on the lid with a filling tube sewn on at a corresponding central point and four U-shaped carrying loops sewn together with the corner seams.
  • the production of this known large-capacity transport bag is therefore relatively complex and inexpensive.
  • the bag wall consists of a round fabric to which a bottom and a lid with a fill opening that can be closed by a cord are sewn separately.
  • the two loop ends of the carrying loops are sewn into an approximately S-shaped or Z-shaped fold of the bag wall.
  • the round woven fabric would have to be woven with the same bag size from much stronger and at the same time denser threads than usual in practice, but this would lead to difficulties leads in the manufacture of the round fabric with existing weaving machines.
  • the invention characterized by the claims solves the problem of providing a large-capacity transport bag for bulk material of the type specified, which can be produced more cost-effectively and taking into account the aforementioned conditions for a drop test has a strength comparable to that of the known transport bags with regard to the burst pressure.
  • the design of the connecting seam as a zigzag seam which can be carried out with a normal single-needle sewing machine, according to the invention, eliminates the need to provide special corner seams.
  • the bag wall is thus provided with only a single seam, the seam pattern of which is oriented in the direction of the seam and can have a length of approximately 10 cm, for example, with an overlap of the fabric blank of approximately 10 to 20 cm on the edge.
  • This single seam develops a strength comparable to that of a round fabric which is seamlessly formed from correspondingly strong and at the same time densely set threads if the conditions of the drop test are used as a basis for comparison purposes. Because of the elimination of special corner seams, such a large-capacity transport bag can now be produced much more cost-effectively.
  • this also gives a greater degree of freedom for an intended attachment of carrying loops to the filling opening of the bag, with the possibility of a separate sewing on of a bottom and a lid, with or without a special emptying or filling tube, unchanged.
  • the sewing of such carrying straps together with a single or double existing fabric strip also with a zigzag seam then results in a further material strength of the bag wall and an increased holding force of the carrying straps in the areas that, for example, when filling the hook of a load crane or bag which is attached to the prongs of the fork of a forklift truck as well as during its transportation are most stressed in terms of material.
  • a preferred embodiment of the large-capacity transport bag according to the invention is shown schematically in a perspective view in the drawing and is described in more detail below.
  • the transport bag provided for filling with a bulk material of generally at least one ton of payload has a bag wall 1 which consists of a cut of a synthetic fiber fabric with a tensile strength of at least about 197 N / cm 2 .
  • the blank is rectangular with a finished length of, for example, 380 cm and a width corresponding to the desired bag height.
  • the vertical edges of this blank are provided for the formation of a connecting seam 2. They can run either in the warp or in the weft direction of the fabric and are expediently hemmed over a width of about 2 cm.
  • the connecting seam 2 which is formed as a zigzag seam with a length of the seam pattern oriented in the seam direction of approximately 10 cm
  • the hemmed cut edges of the blank undergo an overlap 3 of, for example, 20 cm before the zigzag seam is sewn using a normal single-needle sewing machine.
  • the sewing on of the loops 4 and the fabric strips 5 is also realized with a zigzag seam.
  • the fabric strips 5 can consist of the same fiber fabric as the bag wall 1 or of a different material. Your sewing to the bag wall expediently takes place only after sewing the connecting seam 2 in such a mutual arrangement that the four T loops 4 cross the four upper corners of the bag.
  • the bag also has a bottom 7 sewn separately by means of an overcast or safety seam 6 and a cover 8 also sewn separately.
  • a filling tube 10 is also sewn on separately.
  • the tube 9 can be dispensed with on the base 7.
  • a cover 8 can also be used which, for example, has a filling opening which can be closed by a cord.
  • the four carrying straps can finally be replaced by a single-point lifting element of the embodiment according to DE-GM 79 36 129.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP84112903A 1983-11-02 1984-10-25 Grand sac de manutention pour produits en vrac Expired EP0140346B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112903T ATE33474T1 (de) 1983-11-02 1984-10-25 Grossraum-transportbeutel fuer schuettgut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8331441U 1983-11-02
DE8331441 1983-11-02

Publications (3)

Publication Number Publication Date
EP0140346A2 true EP0140346A2 (fr) 1985-05-08
EP0140346A3 EP0140346A3 (en) 1986-04-02
EP0140346B1 EP0140346B1 (fr) 1988-04-13

Family

ID=6758513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112903A Expired EP0140346B1 (fr) 1983-11-02 1984-10-25 Grand sac de manutention pour produits en vrac

Country Status (3)

Country Link
EP (1) EP0140346B1 (fr)
AT (1) ATE33474T1 (fr)
DE (1) DE3470403D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658432A (en) * 1985-02-26 1987-04-14 Lolift Verwaltungs Gmbh Container for bulk material
WO1993012016A1 (fr) * 1991-12-12 1993-06-24 Haberl Gesellschaft M.B.H. Recipient souple en tissu textile
AU640986B2 (en) * 1989-12-20 1993-09-09 Rexam Packaging Limited Improvements relating to bulk containers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2103576A (en) * 1981-08-03 1983-02-23 Bulk Lift Int Inc Method of manufacture of a bulk material transport bag

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658432A (en) * 1985-02-26 1987-04-14 Lolift Verwaltungs Gmbh Container for bulk material
EP0193031A3 (fr) * 1985-02-26 1987-04-29 LOLIFT Verwaltungs GmbH Grand sac de manutention pour produits en vrac
AU640986B2 (en) * 1989-12-20 1993-09-09 Rexam Packaging Limited Improvements relating to bulk containers
WO1993012016A1 (fr) * 1991-12-12 1993-06-24 Haberl Gesellschaft M.B.H. Recipient souple en tissu textile
AT401501B (de) * 1991-12-12 1996-09-25 Storsack Austria Gmbh Flexibler behälter aus textilgewebe

Also Published As

Publication number Publication date
EP0140346B1 (fr) 1988-04-13
EP0140346A3 (en) 1986-04-02
ATE33474T1 (de) 1988-04-15
DE3470403D1 (en) 1988-05-19

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