Packtech - FIBC - Products - Hightech Bags - Conductive Bags

CONDUCTIVE FIBCs

Flexible intermediate bulk containers (FIBC) are widely used for the storage, transportation and handling of powdered, flaked or granular material. Untreated polypropylene is a good electrical insulator, as is often the case with the products placed in FIBC. There is ample opportunity for the generation of electrostatic charge during filling and emptying operations and in unprotected FIBC high levels of charge can quickly build up. In such cases electrostatic discharges are inevitable and can be a severe problem when FIBC are used in flammable environments.


A flammable environment can be generated when handling fine powders that create dust clouds or thin layers of powder, both of which can be ignited by electrostatic discharges. A flammable environment can also be generated when using gases or volatile solvents. In these industrial situations there is clearly a need to eliminate incentive electrostatic discharges.

Regular bag (Type A)

Constructed from non-treated insulating fabric. No requirements are specified for Type A FIBC's,as they are not intended for use in potentially explosive atmospheres.

Anti-Static bag (Type B)

Constructed from insulating fabric but has a breakdown voltage less than 4kV.  This provision prevents the risk of energetic propagating brush discharges, which can ignite dust-air mixture. Type B bags May be used in the presence of the combustible dusts with MIE of greater than 3 mJ but in the absence of flammable vapors or gases.

Conductive Bag (Type C)

                                               
Type C, which is constructed using a vertical lines fabric that has a resistance to earth from any location on the FIBC, including the slings, of less than 108 W. Such FIBCs, provided they are adequately grounded during use, are suitable for use in the presence of any potentially flammable atmosphere, either dust and gas or vapor

May be used where combustible dusts and flammable atmosphere with MIE of 3 mJ or less is present.

No propagating brush discharge, no brush discharges and no spark discharges are to be expected, if it is properly grounded

Dissipative Bag (Type D)

Constructed from antistatic fabric that includes static dissipative, antistatic threads (yellow threads),

This specific discharge threads is called the Corona-effect, grounding is not necessary.

May be used where combustible dusts and flammable atmosphere with MIE of 3 mJ or less is present.