Anti-static woven flexible bulk container
AssigneeCentral Products Company
InventorsTrevor Arthurs, W. Keith Fisher
Life of this patent
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Abstract
This invention relates to ungrounded type flexible fabric container with a reduced energy of electrostatic discharge suitable for use in a combustible environment. A woven fabric is configured to form a flexible fabric container having sidewalls, a top feature and a bottom feature. The woven fabric flexible bulk container is made from a static dissipating fabric comprising fabric woven of non-conductive tapes, to which a plurality of bicomponent conductive staple fibers are added. The bicomponent conductive staple fibers have one or more longitudinal stripes of a carbon loaded conductive constituent on an outer surface of a non-conductive constituent. Preferably the staple fibers are woven into or coated onto the fabric at a spacing of from 3 mm to 100 mm.
Claims20
An ungrounded type flexible fabric container with a reduced energy of electrostatic discharge for use in a combustible environment without the need for antistatic coatings comprising:
- a woven static dissipating fabric configured to form the flexible fabric container having side walls, a top feature and a bottom feature;
- and said woven static dissipating fabric comprises fabric woven of non-conductive tapes, to which a plurality of antistatic yarn segments are woven into or coated onto the fabric at a spacing of from 3 mm to 100 mm and wherein the antistatic yarn segments comprise yarn segments of conductive and non-conductive staple fibers and wherein the conductive staple fibers are fibers having a conductive constituent on an outer surface of a non-conductive constituent and wherein the conductive constituent is formed into one or more longitudinal stripes.
An ungrounded type flexible fabric container with a reduced energy of electrostatic discharge for use in a combustible environment without the need for antistatic coatings comprising:
- a woven fabric configured to form the flexible fabric container having side walls, a top feature and a bottom feature;
- and said woven fabric made from static dissipating fabric comprising fabric woven of non-conductive tapes of polypropylene having a melt flow index of 1–6 g/10 min. and wherein the tapes have a denier from 500 to 4000 and tape width from 0.07 to 0.40 inches, to which a plurality of antistatic yarn segments are woven into or coated onto the fabric at a spacing of from 3 mm to 100 mm and wherein the antistatic yarn segments comprise yarn segments of conductive and non-conductive staple fibers and wherein the conductive staple fibers are fibers having a conductive constituent on an outer surface of a non-conductive constituent and wherein the conductive constituent is formed into one or more longitudinal stripes.
An ungrounded type flexible fabric container with a reduced energy of electrostatic discharge for use in a combustible environment comprising:
- a woven fabric configured to form the flexible fabric container having side walls, a top feature and a bottom feature;
- and said woven fabric made from static dissipating fabric comprising fabric woven of non-conductive tapes, to which a plurality of antistatic yam segments are woven into or coated onto the fabric at a spacing of from 3 mm to 100 mm and wherein the antistatic yam segments comprise yam segments of conductive and non-conductive staple fibers and wherein the conductive staple fibers comprise a bicomponent conductive staple fiber having 1 or more longitudinal stripes of a carbon loaded conductive constituent on an outer surface of a non-conductive constituent.
An ungrounded type flexible fabric container with a reduced energy of electrostatic discharge for use in a combustible environment without the need for antistatic coatings comprising:
- a woven fabric configured to form the flexible fabric container having side walls, a top feature and a bottom feature;
- and said woven fabric made from static dissipating fabric comprising fabric woven of non-conductive tapes of polypropylene having a melt flow index of 1–6 g/10 min. and wherein the tapes have a denier from 500 to 4000 and tape width from 0.07 to 0.40 inches, to which a plurality of antistatic yarn segments are woven into or coated onto the fabric at a spacing of from 3 mm to 100 mm and wherein the antistatic yarn segments comprise yarn segments of conductive and non-conductive staple fibers and wherein the conductive staple fibers comprise a bicomponent conductive staple fiber having 1 or more longitudinal stripes of a carbon loaded conductive constituent on an outer surface of a non-conductive constituent.
Dependencies are inferred from the claim text.