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US20170197780A1 - Earthable flexible intermediate bulk container - Google Patents

Earthable flexible intermediate bulk container Download PDF

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Publication number
US20170197780A1
US20170197780A1 US15/324,342 US201515324342A US2017197780A1 US 20170197780 A1 US20170197780 A1 US 20170197780A1 US 201515324342 A US201515324342 A US 201515324342A US 2017197780 A1 US2017197780 A1 US 2017197780A1
Authority
US
United States
Prior art keywords
conductive
carrying
earthable
dissipative
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.)
Abandoned
Application number
US15/324,342
Inventor
Klaus Baumdicker
Elke Wolf
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Assigned to BAYER AKTIENGESELLSCHAFT reassignment BAYER AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUMDICKER, Klaus, WOLF, Elke
Publication of US20170197780A1 publication Critical patent/US20170197780A1/en
Abandoned 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]
    • B65D88/165—Flexible intermediate bulk containers [FIBC] with electrically conductive properties
    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • D03D15/0005—
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/533—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads antistatic; electrically conductive

Definitions

  • the application relates to an earthable flexible intermediate bulk container.
  • Type C FIBCs Earthable flexible intermediate bulk containers, Type C FIBCs, are generally used for avoiding risks of electrostatic ignition in areas where there is a potentially explosive atmosphere or when handling combustible dusts with a high level of ignition sensitivity.
  • Type C FIBCs are sewn-together containers with a carrying strap of a flexible material in which the carrying strap makes it possible for the container to be picked up from above and transported (as shown for example in FIG. 1 ).
  • They are generally made of a polypropylene fabric that is provided with a dissipative or conductive grid of conductive threads. The connection of the conductive threads to another requires appropriate sewing of the fabric, so that the conductive threads of all the individual parts of the FIBC are in good, adequate contact with one another and with the earthable point, see also TRBS 2153 Annex B and DIN IEC 61340-04-04.
  • FIBCs are therefore additionally provided with one or more earthing jumpers, the location of which is not specific. Nevertheless, inadequately earthed conductive threads can under some circumstances lead to risks of electrostatic ignition. An FIBC that is not earthed leads to strong effectively igniting electrostatic spark discharges.
  • the object was therefore to invent an earthable flexible intermediate bulk container with significantly simplified and improved earthing, without any isolated conductive threads being able to occur any longer in the carrying straps.
  • the object was achieved according to the invention by at least one carrying strap 2 of the intermediate bulk container being provided over the full surface area, at least from the carrying strap 3 to the suspension point 4 , with a dissipative or conductive material in a surface resistance range, measured in accordance with TRBS 2153, of 0.1 to 10 8 ohms.
  • provision over the full surface area means that the carrying strap is continuously dissipative or conductive over its surface area instead of being provided with parallel conductive threads.
  • carrying straps are not exclusively provided with conductive threads, a combination of conductive threads and a full surface area that is conductive being possible.
  • these straps can be regarded as intrinsically safe earthable points, and the earthing can then be simply ensured firstly by way of the picking-up equipment—for example the conductive and earthed metal spider clamp or else the metal prongs of a forklift truck (always earthed in areas with potentially explosive atmospheres).
  • the picking-up equipment for example the conductive and earthed metal spider clamp or else the metal prongs of a forklift truck (always earthed in areas with potentially explosive atmospheres).
  • an earthing clip may also be securely attached to the carrying straps, and there are no longer occasions when the FIBCs are already regarded as unsuitable in the inspection of incoming goods just because of inadequately earthed conductive threads.
  • the material usually polypropylene, that is necessary for the load-bearing strength of the straps, usually remains present as before.
  • the conductive effect described can be provided for example by enclosing them in conductive foil or by conductive coating of the carrying straps or the like.
  • all of the carrying straps are provided with a conductive effect over the full surface area.
  • an extension of at least one carrying strap in the bottom region can easily be made into an earthing lug. It is then possible to dispense with the additional sewing on of further earthable points, such as for example earthing jumpers.
  • the carrying straps can then be referred to in the earthing instructions as clearly identified earthable points; in addition, if desired, an earthing symbol could be printed onto the carrying straps provided with a conductive effect.
  • FIG. 1 Type C FIBC according to the prior art, where:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

The application relates to an earthable flexible intermediate bulk container comprising a container 1 made of a flexible material, which has a dissipative or conductive grid of conductive threads 5, or alternatively is dissipative or conductive over the full surface area, and at least one carrying strap 2 connected to the container 1 by means of a carrying seam 3, characterized in that at least one carrying strap 2 is provided over the full surface area, at least from the carrying seam 3 to the suspension point 4, with a dissipative or conductive material in a surface resistance range, measured in accordance with TRBS 2153, of 0.1 to 108 ohms.

Description

  • The application relates to an earthable flexible intermediate bulk container.
  • Earthable flexible intermediate bulk containers, Type C FIBCs, are generally used for avoiding risks of electrostatic ignition in areas where there is a potentially explosive atmosphere or when handling combustible dusts with a high level of ignition sensitivity.
  • Commercially available Type C FIBCs are sewn-together containers with a carrying strap of a flexible material in which the carrying strap makes it possible for the container to be picked up from above and transported (as shown for example in FIG. 1). They are generally made of a polypropylene fabric that is provided with a dissipative or conductive grid of conductive threads. The connection of the conductive threads to another requires appropriate sewing of the fabric, so that the conductive threads of all the individual parts of the FIBC are in good, adequate contact with one another and with the earthable point, see also TRBS 2153 Annex B and DIN IEC 61340-04-04.
  • In practice, this connection is not always ensured in all places. In particular there are often problems in the region of the carrying straps, which nowadays are generally made of insulating PP fabric and are provided with 3 to 8 conductive threads arranged exclusively in parallel, for one reason because not all of the conductive threads are in adequate contact with the earthable point—for example, the threads may be destroyed by the sewing on of the carrying straps—or—since they only rest loosely on the PP fabric of the body of the FIBC—they do not have a proper earth contact. For another reason because twisting of the carrying straps for example means that adequate contact of the threads with the picking-up equipment—for example a spider clamp—which often serves as an earthing point, is not always ensured.
  • From the aspect of avoiding risks of electrostatic ignition, earthing of Type C FIBCs is a safety measure that has to meet strict requirements and, as a result of manufacturing defects or operating errors, can lead to accidents (L. G. Britton, “Process Safety Progress”, Vol. 12. No. 4. October (1993), 240-250).
  • FIBCs are therefore additionally provided with one or more earthing jumpers, the location of which is not specific. Nevertheless, inadequately earthed conductive threads can under some circumstances lead to risks of electrostatic ignition. An FIBC that is not earthed leads to strong effectively igniting electrostatic spark discharges.
  • The object was therefore to invent an earthable flexible intermediate bulk container with significantly simplified and improved earthing, without any isolated conductive threads being able to occur any longer in the carrying straps.
  • The object was achieved according to the invention by at least one carrying strap 2 of the intermediate bulk container being provided over the full surface area, at least from the carrying strap 3 to the suspension point 4, with a dissipative or conductive material in a surface resistance range, measured in accordance with TRBS 2153, of 0.1 to 108 ohms.
  • The subject matter of the application is therefore an earthable flexible intermediate bulk container comprising:
      • a container 1 made of a flexible material, which has a dissipative or conductive grid of conductive threads 5, or alternatively is dissipative or conductive over the full surface area, and
      • at least one carrying strap 2 connected to the container 1 by means of a carrying seam 3, characterized in that at least one carrying strap 2 is provided over the full surface area, at least from the carrying seam 3 to the suspension point 4, with a dissipative or conductive material in a surface resistance range, measured in accordance with TRBS 2153, of 0.1 to 108 ohms.
  • For the purposes of the invention, provision over the full surface area means that the carrying strap is continuously dissipative or conductive over its surface area instead of being provided with parallel conductive threads. For the purposes of the invention, therefore, carrying straps are not exclusively provided with conductive threads, a combination of conductive threads and a full surface area that is conductive being possible.
  • By providing at least one of the carrying straps with a conductive effect over the full surface area in the way according to the invention, these straps can be regarded as intrinsically safe earthable points, and the earthing can then be simply ensured firstly by way of the picking-up equipment—for example the conductive and earthed metal spider clamp or else the metal prongs of a forklift truck (always earthed in areas with potentially explosive atmospheres). Secondly, an earthing clip may also be securely attached to the carrying straps, and there are no longer occasions when the FIBCs are already regarded as unsuitable in the inspection of incoming goods just because of inadequately earthed conductive threads.
  • The material, usually polypropylene, that is necessary for the load-bearing strength of the straps, usually remains present as before. The conductive effect described can be provided for example by enclosing them in conductive foil or by conductive coating of the carrying straps or the like.
  • For reasons of flexibility/extensibility of the carrying straps, it is sufficient to make 60% to 100% of the surface area of a carrying strap conductive, as long as the earthing between the container and the suspension point of the carrying strap is ensured, i.e. the provision of a conductive effect begins on one side of the carrying strap at the carrying seam.
  • Preferably, all of the carrying straps are provided with a conductive effect over the full surface area.
  • Should earthing jumpers be desired in the bottom region, an extension of at least one carrying strap in the bottom region can easily be made into an earthing lug. It is then possible to dispense with the additional sewing on of further earthable points, such as for example earthing jumpers.
  • The carrying straps can then be referred to in the earthing instructions as clearly identified earthable points; in addition, if desired, an earthing symbol could be printed onto the carrying straps provided with a conductive effect.
  • FIG. 1: Type C FIBC according to the prior art, where:
    • 1—container
    • 2—carrying strap
    • 3—carrying seam
    • 4—suspension point
    • 5—dissipative or conductive grid of conductive threads
    • 6—earthing jumpers
    • 7—earthing lead

Claims (3)

1. Earthable flexible intermediate bulk container comprising:
a container made of a flexible material, which has a dissipative or conductive grid of conductive threads, or alternatively is dissipative or conductive over a full surface area thereof, and
at least one carrying strap connected to the container by means of a carrying seam,
wherein at least one carrying strap is provided over the full surface area, at least from the carrying seam to a suspension point, with a dissipative or conductive material in a surface resistance range, measured in accordance with TRBS 2153, of 0.1 to 108 ohms.
2. Earthable flexible intermediate bulk container, all carrying straps thereof being provided with a conductive effect over a full surface area.
3. Earthable flexible intermediate bulk container, at least one carrying strap being made into an earthing lug in a bottom region thereof.
US15/324,342 2014-07-11 2015-07-06 Earthable flexible intermediate bulk container Abandoned US20170197780A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014010273.4 2014-07-11
DE102014010273.4A DE102014010273A1 (en) 2014-07-11 2014-07-11 Earthing flexible bulk material container
PCT/EP2015/065291 WO2016005302A1 (en) 2014-07-11 2015-07-06 Groundable, flexible bulk material container

Publications (1)

Publication Number Publication Date
US20170197780A1 true US20170197780A1 (en) 2017-07-13

Family

ID=53514179

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/324,342 Abandoned US20170197780A1 (en) 2014-07-11 2015-07-06 Earthable flexible intermediate bulk container

Country Status (8)

Country Link
US (1) US20170197780A1 (en)
EP (1) EP3166873A1 (en)
JP (1) JP2017521330A (en)
KR (1) KR20170031130A (en)
CN (1) CN106715770A (en)
CA (1) CA2954466A1 (en)
DE (1) DE102014010273A1 (en)
WO (1) WO2016005302A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024073317A3 (en) * 2022-09-27 2024-05-16 Schaefer Plastics North America, Llc Material handling container with electrostatic discharge protection

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US5092683A (en) * 1989-08-19 1992-03-03 Eurea Verpackungs Gmbh & Co. Kg High-strength synthetic fiber fabric and items made from such fabric
US5458419A (en) * 1991-07-02 1995-10-17 Empac Verpackungs Gmbh & Co. Flexible container for bulk material
US5478154A (en) * 1994-06-01 1995-12-26 Linq Industrial Fabrics, Inc. Quasi-conductive anti-incendiary flexible intermediate bulk container
US5759649A (en) * 1994-09-01 1998-06-02 Hoechst Aktiengesellschaft Plastic packaging container with improved ability for electrostatic charge derivation
US6331334B1 (en) * 1996-05-03 2001-12-18 Empac Verpackungs Gmbh Container liner
US20020039631A1 (en) * 2000-09-29 2002-04-04 Egon Wurr Static dissipative fabric for flexible containers for bulk material
US20020129864A1 (en) * 2000-10-25 2002-09-19 Trevor Arthurs Anti-static woven fabric and flexible bulk container
US20020136859A1 (en) * 1999-06-03 2002-09-26 Solutia Inc. Antistatic Yarn, Fabric, Carpet and Fiber Blend Formed From Conductive or Quasi-Conductive Staple Fiber
US20030099796A1 (en) * 2001-11-28 2003-05-29 Sunjut Suni Jut Sanayi Ve Tic. A.S. Flexible intermediate bulk container with multiple conductive fibers having permanent anti-static effect
US20040004804A1 (en) * 2002-07-05 2004-01-08 Avram Levi Inner device for neutralization of electrostatic charges from material in contact
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US20160185521A1 (en) * 2013-08-02 2016-06-30 Roquette Freres Flexible storage device comprising a flexible container and an inner liner
US20170166394A1 (en) * 2014-07-21 2017-06-15 Goodwin Plc Fire resistant container

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DE20220629U1 (en) * 2002-11-18 2003-11-20 Eurea Verpackungs GmbH & Co KG, 48432 Rheine Anti-static flexible container for a pourable material, comprises a flexible carrier bag with handles attached which are in the form of loops
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Publication number Priority date Publication date Assignee Title
US5092683A (en) * 1989-08-19 1992-03-03 Eurea Verpackungs Gmbh & Co. Kg High-strength synthetic fiber fabric and items made from such fabric
US5458419A (en) * 1991-07-02 1995-10-17 Empac Verpackungs Gmbh & Co. Flexible container for bulk material
US5478154A (en) * 1994-06-01 1995-12-26 Linq Industrial Fabrics, Inc. Quasi-conductive anti-incendiary flexible intermediate bulk container
US5759649A (en) * 1994-09-01 1998-06-02 Hoechst Aktiengesellschaft Plastic packaging container with improved ability for electrostatic charge derivation
US6331334B1 (en) * 1996-05-03 2001-12-18 Empac Verpackungs Gmbh Container liner
US20020136859A1 (en) * 1999-06-03 2002-09-26 Solutia Inc. Antistatic Yarn, Fabric, Carpet and Fiber Blend Formed From Conductive or Quasi-Conductive Staple Fiber
US20020039631A1 (en) * 2000-09-29 2002-04-04 Egon Wurr Static dissipative fabric for flexible containers for bulk material
US20020129864A1 (en) * 2000-10-25 2002-09-19 Trevor Arthurs Anti-static woven fabric and flexible bulk container
US20070087149A1 (en) * 2000-10-25 2007-04-19 Trevor Arthurs Anti-static woven flexible bulk container
US20040058604A1 (en) * 2001-01-15 2004-03-25 Rene Jud Antistatic flexible intermediate bulk container
US20030099796A1 (en) * 2001-11-28 2003-05-29 Sunjut Suni Jut Sanayi Ve Tic. A.S. Flexible intermediate bulk container with multiple conductive fibers having permanent anti-static effect
US20040004804A1 (en) * 2002-07-05 2004-01-08 Avram Levi Inner device for neutralization of electrostatic charges from material in contact
US20040076791A1 (en) * 2002-10-16 2004-04-22 I. Selim Akdogan Flexible intermediate bulk container
US20050031231A1 (en) * 2003-08-07 2005-02-10 Eisenbarth Bradley Matthew Type B bulk bag with liner
US20080020161A1 (en) * 2004-04-01 2008-01-24 Shimon Shacham Antistatic Dissipative Flexible Intermediate Bulk Container
US20060269711A1 (en) * 2005-05-31 2006-11-30 Noble Fiber Technologies, Llc Flexible intermediate bulk container having optimum discharge of hazardous charge
US20120026696A1 (en) * 2008-05-05 2012-02-02 Ionphase Oy Multilayer packagings
US20140270594A1 (en) * 2013-03-15 2014-09-18 Texene Llc Anti-incendiary flexible intermediate bulk container with induction control
US20160185521A1 (en) * 2013-08-02 2016-06-30 Roquette Freres Flexible storage device comprising a flexible container and an inner liner
US20150266668A1 (en) * 2014-03-21 2015-09-24 Isbir Sentetik Dokuma Sanayi Anonim Sirketi Transporting bag having conductive property
US20170166394A1 (en) * 2014-07-21 2017-06-15 Goodwin Plc Fire resistant container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024073317A3 (en) * 2022-09-27 2024-05-16 Schaefer Plastics North America, Llc Material handling container with electrostatic discharge protection

Also Published As

Publication number Publication date
CA2954466A1 (en) 2016-01-14
DE102014010273A1 (en) 2016-01-14
CN106715770A (en) 2017-05-24
JP2017521330A (en) 2017-08-03
EP3166873A1 (en) 2017-05-17
WO2016005302A1 (en) 2016-01-14
KR20170031130A (en) 2017-03-20

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AS Assignment

Owner name: BAYER AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAUMDICKER, KLAUS;WOLF, ELKE;REEL/FRAME:042664/0592

Effective date: 20170214

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION