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BIG-BAGS ABLEITFÄHIG TYP- C

BIG-BAGS ANTISTATIC TYP-B

FIBC's Type-B FIBCs made from non-conductive materials having a breakdown voltage not exceeding 6 kV

Type B FIBC can be used where combustible dusts are present, but it shall not be used in hazardous areas, zones 1 or 0.Type B FIBC are permitted in Dust Zone 21-22 with MIE > 3 mJ (MIE = Minimum Ignition Energy).

When filling and emptying big bags, static electrical energy can be discharged, which can lead to an explosion in an explosive environment. Depending on the structure, conductivity and determinations, big bags can be divided into several groups according to the IEC 61340 standard:

 

BIG BAG Typ-A -  FIBCs made from non-conductive materials without any measures against electrostatic charging. As no electrical conductive material is interwoven in the fabric grounding and charge dissipation is hardly possible. Explosive atmospheres of gases as well as explosive atmospheres of dusts can be ignited. Therefore, a Type A FIBC must not be used to handle combustible dusts. If such a FIBC containing inert material has to be used in hazardous areas, this may only happen in zones 2 or 22.

BIG BAG Typ-B -  FIBCs made from non-conductive materials having a breakdown voltage not exceeding 6 kV. This reliably prevents the ignition of explosive dust atmospheres while explosive gas atmospheres can still be ignited. Like Type A, the Type B has no interwoven conductive materials. Thus, a Type B FIBC can be used where combustible dusts are present, but it shall not be used in hazardous areas, zones 1 or 0.Type B FIBC are permitted in Dust Zone 21-22 with MIE > 3 mJ (MIE = Minimum Ignition Energy).

 

BIG BAG Typ-C - FIBCs normally made of non-conductive fabric with interwoven conductive threads

  • forming a reliably interconnected grid of maximum 50 mm mesh size
    or

  • having a distance between each other of less than 20 mm if the threads are in one direction only.

 

Those conductive threads must be interconnected with less than 107 ohm and must be grounded during filling and emptying operations. Some Type C FIBCs have interconnected conductive loops to enable grounding via a (grounded) hoist system. When grounded properly there is no risk of incendive discharges.
The inner or outer surfaces of the FIBC may have a thin coating. In this case the breakdown voltage to the conductive threads must not exceed 6 kV to avoid propagating brush discharges.
Thus, Type C FIBCs can be used in an environment with combustible dusts and/or explosive gases. There is no risk using these FIBCs in hazardous areas zones 1, 2, 21, 22, providing they are properly grounded.

Fabric:

Uncoated fabric:

  • For filling material with bigger grain size such as  granules, sand, stones, cereals...

  • The fabric is breathable and very suitable for susceptible food.

  • In a non-coated fabric, the ribbons may move, so an uncoated big-bag will always have a worse shape and stability to a coated big-bag.

Coated fabric:

  • For dusty or powdery filling materials.

  • The fabric is water repellent and dustproof.

  • A coated fabric big bag has better shape and stability.

Seams:

We offer the following seams:

  • Standard O/S seams without additional dustproof

  • One-side dustproof seams

  • Double dustproof seams 

  • Double dustproof seams plus non woven webbing

Lifting loops:

Corner loops

Cross corner loops

Top and Bottom

Open top,

flat closed bottom

Open top,

bottom spout

Open top,

cone bottom

Open top, 

total opening bottom

top skirt,

flat closed bottom

top skirt,

bottom spout

top skirt,

cone bottom

top skirt,

total opening bottom

top spout,

flat closed bottom

top spout,

bottom spout

top spout,

cone bottom

top spout,

total opening bottom

+49 (0) 4191/72456-80