EP0140346B1 - Large transport bag for bulk material - Google Patents

Large transport bag for bulk material Download PDF

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Publication number
EP0140346B1
EP0140346B1 EP84112903A EP84112903A EP0140346B1 EP 0140346 B1 EP0140346 B1 EP 0140346B1 EP 84112903 A EP84112903 A EP 84112903A EP 84112903 A EP84112903 A EP 84112903A EP 0140346 B1 EP0140346 B1 EP 0140346B1
Authority
EP
European Patent Office
Prior art keywords
seam
bag
container
along
joining seam
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.)
Expired
Application number
EP84112903A
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German (de)
French (fr)
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EP0140346A2 (en
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.)
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Publication date
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Priority to AT84112903T priority Critical patent/ATE33474T1/en
Publication of EP0140346A2 publication Critical patent/EP0140346A2/en
Publication of EP0140346A3 publication Critical patent/EP0140346A3/en
Application granted granted Critical
Publication of EP0140346B1 publication Critical patent/EP0140346B1/en
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 warping 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 pairs of 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, a lid also sewn on separately with a filling pipe 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 wall of the bag consists of a round fabric to which a bottom and a lid with a filling 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- or Z-shaped pleating 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 goods of the type specified, which can be produced more cost-effectively under consideration of the above-mentioned conditions for a drop test and thereby has a strength with respect to the bursting pressure which is comparable with the known transport bags.
  • 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, oriented in the direction of the seam, has a length of approximately 10 cm with an overlap of the fabric blank of approximately 10 to 20 cm.
  • 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 at for example 380 cm and a width according 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 appropriately 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. It is expedient to sew them onto the bag wall only after the connection seam 2 has been sewn in such a mutual arrangement that the four carrying 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-U-79 36 129.

Abstract

1. A large-sized transportation container for materials in bulk, comprising a container wall (1) made of a cut-up of a woven fabric which is provided with a joining seam (2) along two cut edges extending over the full height of the container in the direction either of the warp threads or of the weft threads, characterized in that the joining seam (2) is zigzag-stitched and has a length of the stitching appearance along the seam of about 10 centimeters whereby the cut edges of the woven fabric are provided along the joining seam (2) with an overlap of about 10 to 20 centimeters.

Description

Die Erfindung bezieht sich auf einen Großraum-Transportbeutel für Schüttgut, bei dem die Beutelwand aus einem Zuschnitt eines Fasergewebes besteht, der längs zweier, in Kett- oder Schußfadenrichtung verlaufender Schnittkanten mit einer über die volle Beutelhöhe reichenden Verbindungsnaht versehen ist.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.

Bei einem aus dem DE-U-78 30 440 bekannten Transportbeutel dieser Art ist die Verbindungsnaht als eine auf einer Kettelmaschine mit einem Nähdurchgang ausgeführte Doppelstichnaht ausgebildet. Damit diese Verbindungsnaht bei einer Nutzlast von wenigstens einer Tonne einen bezüglich des Berstdruckes genügend großen Sicherheitsfaktor erhält, ist die Beutelwand mit vier weiteren, parallel zu der Verbindungsnaht verlaufenden Eckennähten versehen, die ebenfalls als Doppelstichnähte ausgeführt sind. Die Eckennähte unterteilen die Beutelwand in vier paarweise parallele Seitenwände des Beutels. Die Verbindungsnaht ist in der Mitte einer dieser Seitenwände ausgebildet. Für eine weitere Vergrößerung des Sicherheitsfaktors ist eine Ausrichtung aller Nähte in der Kettfadenrichturig des Fasergewebes und eine Übernähung wenigstens der Eckennähte unter Verwendung desselben Fadens vorgesehen. Der bekannte Transportbeutel weist daneben noch einen separat angenähten Boden mit einem an einer zentralen Stelle angenähten Entleerungsrohr, einen ebenfalls separat angenähten Deckel mit einem an einer entsprechenden zentralen Stelle angenähten Füllrohr und vier gemeinsam mit den Eckennähten angenähte U-förmige Trageschlaufen auf. Die Herstellung dieses bekannten Großraum-Transportbeutels ist daher relativ aufwendig und kostenungünstig.In a transport bag of this type known from DE-U-78 30 440, the connecting seam is designed as a double stitch seam carried out on a warping machine with a sewing passage. In order for this connecting seam to have a safety factor that is sufficiently large with regard to the bursting pressure with a payload of at least one ton, 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 pairs of parallel side walls of the bag. The connecting seam is formed in the middle of one of these side walls. For a further increase in the safety factor, an alignment of all seams in the warp thread is provided for the fiber fabric and an overstitching of at least the corner seams using the same thread is provided. The known transport bag also has a separately sewn-on bottom with an emptying tube sewn on at a central point, a lid also sewn on separately with a filling pipe 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.

Bei einem gattungsähnlichen Transportbeutel gemäß der DE-C-24 16 169 besteht die Beutelwand aus einem Rundgewebe, an das ein Boden und ein Deckel mit einer durch einen Schnurzug verschließbaren Einfüllöffnung separat angenäht sind. In jeweils einer etwa S- oder Z-förmigen Fältelung der Beutelwand sind die beiden Schlaufenenden von Trageschlaufen vernäht. Um mit einem Transportbeutel dieser Ausbildung eine mit den gattungsgleichen Transportbeuteln vergleichbare Festigkeit gegenüber dem Berstdruck mit einem übereinstimmenden Sicherheitsfaktor zu erhalten, müßte das Rundgewebe bei einer gleichen Beutelgröße aus wesentlich stärkeren und gleichzeitig dichter eingestellten Fäden als in der Praxis üblich gewebt sein, was aber zu Schwierigkeiten bei der Herstellung des Rundgewebes mit vorhandenen Webmaschinen führt. Das Weben eines Rundgewebes ist außerdem wesentlich teurer als das Weben des bei den gattungsgleichen Transportbeuteln verwendeten Flachgewebes. Solche gattungsähnlichen Transportbeutel scheiden daher unter Berücksichtigung insbesondere des Sicherheitsfaktors für einen Transport von Schüttgut aus, wenn dafür ein Füllvolumen von etwa 1 m3 und eine Nutzlast bis maximal etwa 1 250. kg verlangt wird und ihre zulässige Verwendung einen Falltest aus einer freien Fallhöhe von 120 cm unbeschädigt aushalten muß.In a generic transport bag according to DE-C-24 16 169, the wall of the bag consists of a round fabric to which a bottom and a lid with a filling 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- or Z-shaped pleating of the bag wall. In order to obtain a strength compared to the bursting pressure with a matching safety factor with a transport bag of this design comparable to the transport bags of the same type, 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. Weaving a round fabric is also considerably more expensive than weaving the flat fabric used in the transport bags of the same type. Such generic transport bags are therefore ruled out, taking into account in particular the safety factor for the transport of bulk goods, if a filling volume of approximately 1 m 3 and a payload of up to approximately 1 250 kg is required and their permissible use is a drop test from a free fall height of 120 cm must endure undamaged.

Die durch die Patentansprüche gekennzeichnete Erfindung löst die Aufgabe, einen Großraum-Transportbeutel für Schüttgut der angegebenen Gattung bereitzustellen, der unter Berücksichtigung der vorerwähnten Bedingungen für einen Falltest kostengünstiger herstellbar ist und dabei eine mit den bekannten Transportbeuteln vergleichbare Festigkeit bezüglich des Berstdruckes aufweist.The invention characterized by the claims solves the problem of providing a large-capacity transport bag for bulk goods of the type specified, which can be produced more cost-effectively under consideration of the above-mentioned conditions for a drop test and thereby has a strength with respect to the bursting pressure which is comparable with the known transport bags.

Durch die nach der Erfindung vorgesehene Ausbildung der Verbindungsnaht als eine Zick-Zack-Naht, die mit einer normalen Einnadel-Nähmaschine ausgeführt werden kann, entfällt die Notwendigkeit für das Vorsehen besonderer Eckennähte. Die Beutelwand ist somit nur mit einer einzigen Naht versehen, deren in der Nahtrichtung ausgerichtetes Nahtbild bei einer kantenseitigen Überlappung des Gewebezuschnittes von etwa 10 bis 20 cm eine Länge von etwa 10 cm hat. Diese einzige Naht entwickelt eine mit einem nahtlos aus entsprechend starken und gleichzeitig dichter eingestellten Fäden ausgebildeten Rundgewebe vergleichbare Festigkeit, wenn für Vergleichszwecke die Bedingungen des Falltestes zu grunde gelegt werden. Wegen des Wegfalls von besonderen Eckennähten ist damit ein solcher Großraum-Transportbeutel jetzt wesentlich kostengünstiger herstellbar. Gleichzeitig wird damit auch ein größerer Freiheitsgrad für eine beabsichtigte Anbringung von Trageschlaufen an der Einfüllöffnung des Beutels erhalten, wobei unverändert die Möglichkeit für ein separates Annähen eines Bodens und eines Deckels, jeweils mit oder ohne ein besonderes Entleerungs- bzw. Füllrohr besteht. Das Annähen solcher Trageschlaufen zusammen mit einem einfach oder doppelt vorhandenen Gewebestreifen ebenfalls mit einer Zick-Zack-Naht ergibt dann gleichzeitig eine weitere Materialfestigkeit der Beutelwand sowie eine verstärkte Haltekraft der Trageschlaufen in den Bereichen, die beim Füllen des dabei beispielsweise an den Haken eines Lastkranes oder an die Zinken der Gabel eines Gabelstaplers angehängten Beutels sowie auch bei dessen Transport materialmäßig am stärksten beansprucht sind.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, oriented in the direction of the seam, has a length of approximately 10 cm with an overlap of the fabric blank of approximately 10 to 20 cm. 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. At the same time, 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.

Eine bevorzugte Ausführungsform des erfindungsgemäßen Großraum-Transportbeutels ist in einer Perspektivansicht in der Zeichnung schematisch dargestellt und wird nachfolgend näher beschrieben.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.

Der für die Füllung mit einem Schüttgut von in der Regel wenigstens einer Tonne Nutzlast vorgesehene Transportbeutel weist eine Beutelwand 1 auf, die aus einem Zuschnitt eines synthetischen Fasergewebes mit einer Zugfestigkeit von wenigstens etwa 197 N/cm2 besteht. Der Zuschnitt ist dabei rechteckig mit einer Fertiglänge von beispielsweise 380 cm und einer Breite entsprechend der gewünschten Beutelhöhe ausgeführt. Die Höhenkanten dieses Zuschnittes sind für die Bildung einer Verbindungsnaht 2 vorgesehen. Sie können entweder in der Kett- oder in der Schußfadenrichtung des Gewebes verlaufen und sind zweckmäßig über eine Breite von etwa 2 cm gesäumt. Zur Bildung der Verbindungsnaht 2, die als eine Zick-Zack-Naht mit einer in Nahtrichtung ausgerichteten Länge des Nahtbildes von etwa 10 cm ausgebildet wird, erfahren die gesäumten Schnittkanten des Zuschnittes eine Überlappung 3 von beispielsweise 20 cm, bevor die Zick-Zack-Naht mittels einer normalen Einnadel-Nähmaschine genäht wird.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 at for example 380 cm and a width according 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 appropriately hemmed over a width of about 2 cm. To form 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.

An die Beutelwand 1 sind vier etwa U-förmige Trageschlaufen 4 gemeinsam mit einem ihre beiden Schlaufenenden jeweils überdeckenden Gewebestreifen 5 angenäht. Das Annähen der Trageschlaufen 4 und der Gewebestreifen 5 ist ebenfalls mit einer Zick-Zack-Naht verwirklicht. Die Gewebestreifen 5 können aus dem gleichen Fasergewebe wie die Beutelwand 1 oder aus einem anderen Material bestehen. Ihr Annähen an die Beutelwand erfolgt zweckmäßig erst nach dem Nähen der Verbindungsnaht 2 in einer solchen wechselseitigen Anordnung, daß die vier Trageschlaufen 4 die vier oberen Ecken des Beutels überkreuzen.Four approximately U-shaped carrying loops 4 are sewn onto the bag wall 1 together with a fabric strip 5 covering their two loop ends. 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. It is expedient to sew them onto the bag wall only after the connection seam 2 has been sewn in such a mutual arrangement that the four carrying loops 4 cross the four upper corners of the bag.

Der Beutel weist weiterhin einen mittels einer Überwendlings- oder Sicherheitsnaht 6 separat angenähten Boden 7 und einen ebenfalls separat angenähten Deckel 8 auf. An einer zentralen Stelle des Bodens 7 ist ein Entleerungsrohr 9 separat angenäht, während an einer entsprechenden zentralen Stelle des Deckels 8 ein Füllrohr 10 ebenfalls separat angenäht ist. Für andere Ausführungsformen des Beutels kann an dem Boden 7 auf das Rohr 9 verzichtet werden. Statt eines mit dem Rohr 10 versehenen Deckels 8 kann auch ein Deckel verwendet sein, der beispielsweise eine durch einen Schnurzug verschließbare Einfüllöffnung aufweist. Die vier Trageschlaufen können schließlich durch ein Einpunkt-Hebeelement der Ausführungsform gemäß dem DE-U-79 36 129 ersetzt sein.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. At a central location on the bottom 7, an emptying tube 9 is sewn on separately, while at a corresponding central location on the cover 8 a filling tube 10 is also sewn on separately. For other embodiments of the bag, the tube 9 can be dispensed with on the base 7. Instead of a cover 8 provided with the tube 10, a cover 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-U-79 36 129.

Claims (3)

1. A large-sized transportation container for materials in bulk, comprising a container wall (1) made of a cut-up of a woven fabric which is provided with a joining seam (2) along two cut edges extending over the full height of the container in the direction either of the warp threads or of the weft threads, characterized in that the joining seam (2) is zigzag-stitched and has a length of the stitching appearance along the seam of about 10 centimeters whereby the cut edges of the woven fabric are provided along the joining seam (2) with an overlap of about 10 to 20 centimeters.
2. A large-sized transportation container according to claim 1, characterized in that at least a bottom (7) is separately stitched to the container wall (1) by means of an oversew or a safety stitch (6).
3. A large-sized transportation container according to claim 1 or 2, characterized in that the two loop ends of substantially U-shaped carrying loops (4) are zigzag-stitched to the container wall (1) in common with an either underlaying and/or an overlaying fabric strip (5).
EP84112903A 1983-11-02 1984-10-25 Large transport bag for bulk material Expired EP0140346B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112903T ATE33474T1 (en) 1983-11-02 1984-10-25 LARGE CAPACITY TRANSPORT BAG FOR BULK GOODS.

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

Family

ID=6758513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112903A Expired EP0140346B1 (en) 1983-11-02 1984-10-25 Large transport bag for bulk material

Country Status (3)

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EP (1) EP0140346B1 (en)
AT (1) ATE33474T1 (en)
DE (1) DE3470403D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8505491U1 (en) * 1985-02-26 1985-04-11 Lolift Verpackungsgesellschaft Large-capacity transport bag for bulk goods
AT401501B (en) * 1991-12-12 1996-09-25 Storsack Austria Gmbh FLEXIBLE CONTAINER MADE OF TEXTILE FABRIC

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

Also Published As

Publication number Publication date
ATE33474T1 (en) 1988-04-15
DE3470403D1 (en) 1988-05-19
EP0140346A2 (en) 1985-05-08
EP0140346A3 (en) 1986-04-02

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