Anti-static woven coated fabric and flexible bulk container
AssigneeE. I. Du Pont de Nemours and Company
InventorWilliam R. Fuson
Life of this patent
Estimating the term…
Abstract
Anti-static fabric and bulk containers made of polypropylene fibers and interlaced carrier yarn. The carrier yarn is of nylon or polyester fibers and sheath-core fibers in which the sheath is nylon or polyester, and the core selected from the group consisting of polyolefin, nylon and polyester and contains conductive carbon black or graphite. The carrier yarns are spaced apart in the fabric, and serve to dissipate static electric charges.
Claims9
A bulk container having flexible walls of (a) interwoven yarns of axially oriented, crystalline polypropylene and 1% to 18% by weight of the walls of an interlaced carrier yarn comprising fibers selected from the group consisting of polyester and nylon fibers said carrier yarn containing between 5 and 25% by weight sheath-core filaments having a nonconductive sheath of polyester or nylon and an electrically conductive core selected from the group consisting of polyolefin, polyester, or nylon and said core containing electrically conductive carbon black or graphite and (b) a coating of a thermoplastic polymer adhered to the inner surface of the flexible walls, said flexible walls being capable of dissipating an electrical charge.
Dependencies are inferred from the claim text.