EP0896934B1 - Container bag from a fabric and/or foil material - Google Patents

Container bag from a fabric and/or foil material Download PDF

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Publication number
EP0896934B1
EP0896934B1 EP98113843A EP98113843A EP0896934B1 EP 0896934 B1 EP0896934 B1 EP 0896934B1 EP 98113843 A EP98113843 A EP 98113843A EP 98113843 A EP98113843 A EP 98113843A EP 0896934 B1 EP0896934 B1 EP 0896934B1
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EP
European Patent Office
Prior art keywords
outer layers
conductive
fabric
container bag
interlayer
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 - Lifetime
Application number
EP98113843A
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German (de)
French (fr)
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EP0896934A1 (en
Inventor
Wolf-Dieter Haberl
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.)
BULK BAG-TEC MaschinenhandelsgmbH
Original Assignee
BULK BAG-TEC MaschinenhandelsgmbH
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Publication date
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Publication of EP0896934A1 publication Critical patent/EP0896934A1/en
Application granted granted Critical
Publication of EP0896934B1 publication Critical patent/EP0896934B1/en
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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]
    • B65D88/165—Flexible intermediate bulk containers [FIBC] with electrically conductive properties

Definitions

  • the invention relates to transport bags made of fabric and / or Foil material, the material consisting of two conductive Outer layers and an intermediate layer.
  • Transport bags of the type described are used for transportation bulk goods used.
  • the electrical dissipation usually for the outer layers of polyolefin fabric used are either through woven metal threads, through a metal coating e.g. with aluminum or by weaving carbonized Polyolefin threads reached.
  • a particularly favorable variant of the material for such transport bags is a sandwich construction with two outer layers of dissipative fabric which are connected by an intermediate layer in the form of a polyolefin insert (see, for example, US 4,431,316).
  • the outer layers made of conductive polypropylene fabric with a basis weight of 110 g / m 2 can be used, which have conductive polypropylene monofilament threads. Two layers of this fabric are bonded together by a polypropylene extrusion coating.
  • the transport bags according to the invention are characterized in that that the two outer layers by one or several connecting conductors protruding through the intermediate layer are connected.
  • the outer layers are one conductive fabric and the intermediate layer e.g. a Extrusion coating.
  • the connecting conductors are prefers conductive threads in the intermediate layer are embedded and conductively connect both outer layers.
  • the connecting conductors run from the bottom of the transport bag or its Outlet nozzle in the direction of the inlet nozzle of the transport bag and the conductive threads in the outer layers at least run across it.
  • Fig. 1 shows a cross section through the edge region a fabric and / or film material according to the prior art Technology.
  • Fig. 2 is an analog section through a material structure according to the invention.
  • 3 is the view a web of material and Fig. 4 a according to the invention equipped transport bag schematically in an oblique view.
  • the two outer layers 1, 2 are conductive and exist e.g. from a tissue Low pressure polyethylene or polypropylene.
  • the conductivity is by woven metal threads or by a Metal coating (e.g. with aluminum) or by weaving of carbonized polyolefin threads.
  • An example of a fabric that can be used is a polypropylene fabric with a basis weight of 110 g / m 2 .
  • the line is reached by polypropylene monofilament threads, which are carbonized.
  • the intermediate layer 3 Between the two outer layers is the intermediate layer 3, which connects the two outer layers 1 and 2 to one another, but is itself not conductive.
  • the polypropylene extrusion coating is usually laminated onto the fabric webs and the three layers are pressed together in a web shape.
  • Fig. 2 shows an analog section through sandwich fabric according to the invention.
  • the two outer layers, which are conductive as previously described are electrically connected to one another by connecting conductors 5 conductively connected, the connecting conductor Protrude through the intermediate layer.
  • the layer thicknesses are not to scale entered.
  • the intermediate layer 3 is preferred only very thin e.g. 30 to 45 micron.
  • the lengthways the material web running conductive threads as a connecting conductor 5 are much thicker, so that by the pressure of the pressure rollers of the manufacturing machine and by the pressure within the wound web roll a very good contact with transverse conductive Threads of the outer layers results.
  • connection conductors 5 can arbitrarily over the cross section of a material web be distributed. Either a uniform one is preferred Distribution or it along the longitudinal edges 6 of the Material web (see Fig. 3) several e.g. two conductive Longitudinal threads as a connecting conductor 5 and in the middle area a group of three or four connecting conductors arranged.
  • the middle thread group has the advantage of a better one Contact to the filler neck and outlet neck of the Transport bag.
  • Fig. 4 schematically shows an oblique view of an inventive Transport bag.
  • the web of material 3 forms the side walls of the transport bag 8 and from these material webs are also the Filler neck 9 and the outlet nozzle 10 are formed.
  • the Connecting conductor 5, in particular the middle coulter, extend into these sockets and secure thus sufficient conductivity and conductive Connecting the two outer layers of the material webs, so that any static charges through the earth connection 12th can be derived.
  • the invention is based on the illustrated embodiment not limited.
  • the conductive threads of the outer layers can be woven crosswise and lengthways.
  • the transport bag can have any desired shape and type of cut.
  • the basis weights the fabric is the carrying capacity of the transport bag adapt. Instead of fabrics, film material can also be used Find use.
  • the intermediate layer can next to the connecting properties also convey other properties, like water or air tightness.
  • the connecting ladder can e.g. also be band-shaped or of metal threads or wires are formed.

Abstract

The sack, for the transport of loose materials, is of a woven and/or film material in two outer layers and an intermediate layer. The two outer layers (1,2) are bonded together by one or more connectors (5) passing through the intermediate layer (3). The outer layers are conductive, such as in a woven material of low pressure polyethylene or polypropylene. The conductivity is through woven metal filaments or a metal coating, or weaving in carbonised polyolefin filaments. The centre layer is of extruded polypropylene.

Description

Die Erfindung betrifft Transportsäcke aus Gewebe und/oder Folienmaterial, wobei das Material aus zwei leitfähigen Außenschichten und einer Zwischenschicht besteht.The invention relates to transport bags made of fabric and / or Foil material, the material consisting of two conductive Outer layers and an intermediate layer.

Transportsäcke der beschriebenen Art werden für den Transport schüttfähiger Güter verwendet. Beim Beladen oder Entladen staubförmiger Massen können statische Aufladen entstehen, die abgeleitet werden müssen. Dadurch werden z.B. Funkenbildungen oder Staubexplosionen verhindert.Transport bags of the type described are used for transportation bulk goods used. When loading or Unloading dusty masses can cause static charging arise that must be derived. This will e.g. Sparking or dust explosions prevented.

Die elektrische Ableitfähigkeit der üblicherweise für die Außenschichten verwendeten Polyolefingewebe wird entweder durch eingewebte Metallfäden, durch eine Metallbeschichtung z.B. mit Aluminium oder durch Einweben von karbonisierten Polyolefinfäden erreicht.The electrical dissipation usually for the The outer layers of polyolefin fabric used are either through woven metal threads, through a metal coating e.g. with aluminum or by weaving carbonized Polyolefin threads reached.

Eine besonders günstige Variante des Materials für derartige Transportsäcke ist eine Sandwich-Konstruktion mit zwei Außenschichten aus ableitfähigem Gewebe, die durch eine Zwischenschicht in Form einer Polyolefineinlage verbunden sind (siehe Z.B. US 4 431 316). Beispielsweise können die Außenschichten aus leitfähigem Polypropylengewebe mit einem Flächengewicht von 110 g/m2 verwendet werden, die leitfähige Polypropylen-Monofilamentfäden aufweisen. Zwei Lagen dieses Gewebes werden durch eine Polypropylen-Extrusionsbeschichtung miteinander verbunden. A particularly favorable variant of the material for such transport bags is a sandwich construction with two outer layers of dissipative fabric which are connected by an intermediate layer in the form of a polyolefin insert (see, for example, US 4,431,316). For example, the outer layers made of conductive polypropylene fabric with a basis weight of 110 g / m 2 can be used, which have conductive polypropylene monofilament threads. Two layers of this fabric are bonded together by a polypropylene extrusion coating.

Ein Nachteil dieses Sandwich-Gewebes liegt allerdings darin, daß die Polypropylenzwischenschicht nicht elektrisch leitend ist. Daher ist es notwendig, die beiden Außenschichten miteinander leitfähig zu binden, z.B. durch eine karbonisierte leitfähige Polyolefinfolie, die um die Kantenbereiche herumgeschlagen und mit den beiden Außenschichten des Gewebes verschweißt oder vernäht wird. Dies ist ein zeitraubender und damit teurer Vorgang.One disadvantage of this sandwich fabric is, however in that the polypropylene intermediate layer is not electrical is leading. Therefore, it is necessary to use the two outer layers binding together, e.g. by a carbonized conductive polyolefin film wrapped around the Edge areas whipped around and with the two outer layers of the fabric is welded or sewn. This is a time-consuming and therefore expensive process.

Die erfindungsgemäßen Transportsäcke sind dadurch gekennzeichnet, daß die beiden Außenschichten durch ein oder mehrere die Zwischenschicht durchragende Verbindungsleiter verbunden sind. Dabei sind die Außenschichten ein leitfähiges Gewebe und die Zwischenschicht z.B. eine Extrusionsbeschichtung. Die Verbindungsleiter sind bevorzugt leitfähige Fäden, die in die Zwischenschicht eingebettet sind und beide Außenschichten leitend verbinden. Nach einem weiteren Merkmal verlaufen die Verbindungsleiter vom Boden des Transportsackes bzw. dessen Auslaufstutzen in Richtung zum Einlaufstutzen des Transportsackes und die leitfähigen Fäden in den Außenschichten verlaufen zumindest quer dazu.The transport bags according to the invention are characterized in that that the two outer layers by one or several connecting conductors protruding through the intermediate layer are connected. The outer layers are one conductive fabric and the intermediate layer e.g. a Extrusion coating. The connecting conductors are prefers conductive threads in the intermediate layer are embedded and conductively connect both outer layers. According to another characteristic, the connecting conductors run from the bottom of the transport bag or its Outlet nozzle in the direction of the inlet nozzle of the transport bag and the conductive threads in the outer layers at least run across it.

Weitere vorteilhafte Merkmale der Erfindung sind den Patentansprüchen, der nachfolgenden Beschreibung und den Zeichnungen zu entnehmen.Further advantageous features of the invention are the Claims, the description below and the Take drawings.

Fig. 1 zeigt einen Querschnitt durch den Kantenbereich eines Gewebe und/oder Folienmaterials gemäß Stand der Technik. Fig. 2 ist ein analoger Schnitt durch einen erfindungsgemäßen Materialaufbau. Fig. 3 ist die Ansicht einer Bahn des Materials und Fig. 4 ein gemäß Erfindung ausgestatteter Transportsack schematisch in Schrägansicht.Fig. 1 shows a cross section through the edge region a fabric and / or film material according to the prior art Technology. Fig. 2 is an analog section through a material structure according to the invention. 3 is the view a web of material and Fig. 4 a according to the invention equipped transport bag schematically in an oblique view.

Fig. 1 zeigt als Stand der Technik einen Querschnitt durch ein Sandwich-Gewebe. Die beiden Außenschichten 1,2 sind leitfähig und bestehen z.B. aus einem Gewebe aus Niederdruck-Polyethylen oder Polypropylen. Die Leitfähigkeit wird durch eingewebte Metallfäden oder durch eine Metallbeschichtung (z.B. mit Aluminium) oder durch Einweben von karbonisierten Polyolefinfäden erreicht.1 shows a cross section through as prior art a sandwich fabric. The two outer layers 1, 2 are conductive and exist e.g. from a tissue Low pressure polyethylene or polypropylene. The conductivity is by woven metal threads or by a Metal coating (e.g. with aluminum) or by weaving of carbonized polyolefin threads.

Ein Beispiel für ein verwendbares Gewebe ist ein Polypropylengewebe mit einem Flächengewicht von 110 g/m2. Die Leitung wird durch Polypropylen-Monofilamentfäden, die karbonisiert sind, erreicht. Zwischen den beiden Außenschichten liegt die Zwischenschicht 3, die die beiden Außenschichten 1 und 2 miteinander verbindet, aber selbst nicht leitfähig ist. Bei der Herstellung derartiger Sandwich-Gewebe wird üblicherweise die Polypropylen-Extrusionsbeschichtung auf die Gewebebahnen aufkaschiert und die drei Schichten werden miteinander bahnförmig verpreßt.An example of a fabric that can be used is a polypropylene fabric with a basis weight of 110 g / m 2 . The line is reached by polypropylene monofilament threads, which are carbonized. Between the two outer layers is the intermediate layer 3, which connects the two outer layers 1 and 2 to one another, but is itself not conductive. In the manufacture of such sandwich fabrics, the polypropylene extrusion coating is usually laminated onto the fabric webs and the three layers are pressed together in a web shape.

Um die beiden Außenschichten 1,2 miteinander leitend zu verbinden, ist gemäß Stand der Technik um eine Kante herum eine elektrisch leitende Verbindungsfolie 4 vorgesehen.To conduct the two outer layers 1, 2 together connect, is according to the prior art around an edge an electrically conductive connecting film 4 is provided.

Die Fig. 2 zeigt einen analogen Schnitt durch ein erfindungsgemäßes Sandwich-Gewebe. Die beiden Außenschichten, die leitfähig sind, wie zuvor beschrieben, werden durch Verbindungsleiter 5 miteinander elektrisch leitend verbunden, wobei die Verbindungsleiter die Zwischenschicht durchragen.Fig. 2 shows an analog section through sandwich fabric according to the invention. The two outer layers, which are conductive as previously described are electrically connected to one another by connecting conductors 5 conductively connected, the connecting conductor Protrude through the intermediate layer.

Diese Verbindungsleiter sind bei der Herstellung des Sandwich-Gewebes einfach vorzusehen, indem bei der Extrusionsbeschichtung, also dem Auftragen der Zwischenschicht 3, automatisch und ohne größerem Aufwand leitfähige Fäden in Längsrichtung der Materialbahn zwischen den Schichten mitlaufen gelassen werden. These connecting conductors are in the manufacture of the Sandwich fabric simply provided by the Extrusion coating, i.e. the application of the intermediate layer 3, automatically and effortlessly conductive Threads in the longitudinal direction of the material web between the Layers are allowed to run along.

Bei quergewebten leitfähigen Fäden der Außenschichten 1,2 ergibt sich dadurch ein guter Kontakt zwischen den Außenschichten.In the case of cross-woven conductive threads of the outer layers 1, 2 This results in good contact between the outer layers.

In den Figuren 1 und 2 sind die Schichtdicken nicht maßstäblich eingetragen. Bevorzugt ist die Zwischenschicht 3 nur sehr dünn z.B. 30 bis 45 Micron. Die in Längsrichtung der Materialbahn mitlaufenden leitfähigen Fäden als Verbindungsleiter 5 sind demgegenüber wesentlich dicker, sodaß sich durch den Druck der Anpreßwalzen der Herstellmaschine und durch den Druck innerhalb der aufgewickelten Materialbahnrolle ein sehr guter Kontakt mit querlaufenden leitfähigen Fäden der Außenschichten ergibt.In Figures 1 and 2, the layer thicknesses are not to scale entered. The intermediate layer 3 is preferred only very thin e.g. 30 to 45 micron. The lengthways the material web running conductive threads as a connecting conductor 5 are much thicker, so that by the pressure of the pressure rollers of the manufacturing machine and by the pressure within the wound web roll a very good contact with transverse conductive Threads of the outer layers results.

Die leitfähigen Fäden, die als Verbindungsleiter 5 dienen, können beliebig über den Querschnitt einer Materialbahn verteilt werden. Bevorzugt ist entweder eine gleichmäßige Verteilung oder es werden entlang der Längskanten 6 der Materialbahn (siehe Fig. 3) mehrere z.B. zwei leitfähige Längsfäden als Verbindungsleiter 5 und im Mittelbereich eine Fadenschar von drei oder vier Verbindungsleiter angeordnet.The conductive threads that serve as connection conductors 5 can arbitrarily over the cross section of a material web be distributed. Either a uniform one is preferred Distribution or it along the longitudinal edges 6 of the Material web (see Fig. 3) several e.g. two conductive Longitudinal threads as a connecting conductor 5 and in the middle area a group of three or four connecting conductors arranged.

Die mittlere Fadenschar hat den Vorteil eines besseren Kontaktes zu den Einfüllstutzen und Auslaufstutzen des Transportsackes.The middle thread group has the advantage of a better one Contact to the filler neck and outlet neck of the Transport bag.

Fig. 4 zeigt in Schrägansicht schematisch einen erfindungsgemäßen Transportsack. Schematisch sind an einer Seitenwand des Sackes die quer verlaufenden leitfähigen Fäden 11 der außenliegenden Außenschicht eingezeichnet. Die Materialbahn gemäß Fig. 3 bildet jeweils die Seitenwände des Transportsackes 8 und aus diesen Materialbahnen sind auch der Einfüllstutzen 9 und der Auslaufstutzen 10 gebildet. Die Verbindungsleiter 5, insbesondere der mittleren Schar, erstrecken sich bis in diese Stutzen hinein und sichern somit eine ausreichende Leitfähigkeit und leitfähige Verbindung der beiden Außenschichten der Materialbahnen, sodaß etwaige statische Ladungen über den Erdanschluß 12 abgeleitet werden können.Fig. 4 schematically shows an oblique view of an inventive Transport bag. Are schematic on a side wall of the sack, the transverse conductive threads 11 of the outer layer shown. The web of material 3 forms the side walls of the transport bag 8 and from these material webs are also the Filler neck 9 and the outlet nozzle 10 are formed. The Connecting conductor 5, in particular the middle coulter, extend into these sockets and secure thus sufficient conductivity and conductive Connecting the two outer layers of the material webs, so that any static charges through the earth connection 12th can be derived.

Die Erfindung ist auf das dargestellte Ausführungsbeispiel nicht beschränkt. Die leitfähigen Fäden der Außenschichten können quer- und längsgewebt sein. Der Transportsack kann jede gewünschte Form und Schnittart haben. Die Flächengewichte der Gewebe sind der Tragkraft des Transportsackes anzupassen. Anstelle von Geweben kann auch Folienmaterial Verwendung finden. Die Zwischenschicht kann neben der verbindenden Wirkung auch andere Eigenschaften vermitteln, wie Wasser- oder Luftdichtheit. Die Verbindungsleiter können z.B. auch bandförmig sein oder von Metallfäden oder -drähten gebildet werden.The invention is based on the illustrated embodiment not limited. The conductive threads of the outer layers can be woven crosswise and lengthways. The transport bag can have any desired shape and type of cut. The basis weights the fabric is the carrying capacity of the transport bag adapt. Instead of fabrics, film material can also be used Find use. The intermediate layer can next to the connecting properties also convey other properties, like water or air tightness. The connecting ladder can e.g. also be band-shaped or of metal threads or wires are formed.

Claims (5)

  1. Container bag composed of fabric and/or film material, the material being composed of two conductive outer layers and one interlayer, characterized in that the two outer layers (1, 2) are electrically connected by one or more connecting conductors (5) projecting through the interlayer (3).
  2. Container bag according to Claim 1, characterized in that the outer layers (1, 2) are a conductive fabric and in that the interlayer is an extrusion coating.
  3. Container bag according to Claim 1 or 2, characterized in that the connecting conductors (5) are conductive threads which are embedded in the interlayer (3) and connect the two outer layers (1, 2) together conductingly.
  4. Container bag according to Claim 3, characterized in that the connecting conductors (5) extend from the base of the container bag (8) or its outlet stub (10) in the direction of the inlet stub (9) of the container bag and in that the conductive threads (11) in the outer layer extend at least transversely thereto.
  5. Fabric web for producing container bags according to one or more of Claims 1 to 4, characterized in that it is composed of two conductive fabrics as outer layers (1, 2), an interlayer (3) joining the outer layers (1, 2) together and one or more connecting conductors (5) projecting through the interlayer, the connecting conductor and the two outer layers being in electrically conducting contact.
EP98113843A 1997-08-13 1998-07-24 Container bag from a fabric and/or foil material Expired - Lifetime EP0896934B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT135997 1997-08-13
AT1359/97 1997-08-13
AT135997 1997-08-13

Publications (2)

Publication Number Publication Date
EP0896934A1 EP0896934A1 (en) 1999-02-17
EP0896934B1 true EP0896934B1 (en) 2002-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113843A Expired - Lifetime EP0896934B1 (en) 1997-08-13 1998-07-24 Container bag from a fabric and/or foil material

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EP (1) EP0896934B1 (en)
AT (1) ATE228091T1 (en)
DE (1) DE59806326D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4689820B2 (en) * 2000-12-28 2011-05-25 シバタ工業株式会社 Flexible container
TR200500041T2 (en) * 2002-07-05 2005-10-21 Sunjut Suni̇ Jüt Sanayi̇ Ve Ti̇caret A.Ş. Internal elements that neutralize the static electricity in the material it comes into contact with.
DE10302308B3 (en) * 2003-01-22 2004-03-18 InfraServ GmbH & Co. Höchst KG Container for corrosive conductive liquids, e.g. for galvanization or distillation, having a seamed double layered plastic coating with a leak indicating system based on resistance measurements
DE202015102137U1 (en) 2014-07-15 2015-06-12 Spectrum Import Export Ltd. Flexible packaging material and flexible bulk material container made from this material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122942B (en) * 1982-07-01 1985-10-30 Tioxide Group Plc Textile materials and their use in containers
DE3938414C2 (en) * 1989-08-19 1994-04-14 Eurea Verpackung Bulk goods container made of a woven carrier bag and carrier devices attached to it
GB9010498D0 (en) * 1990-05-10 1990-07-04 Mulox Ibc Ltd Container bag
DE9108091U1 (en) * 1991-07-02 1991-09-12 Empac Verpackungs Gmbh & Co, 4407 Emsdetten, De

Also Published As

Publication number Publication date
EP0896934A1 (en) 1999-02-17
DE59806326D1 (en) 2003-01-02
ATE228091T1 (en) 2002-12-15

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