Back to results
US 4,557,968 AGranted
Directional electrostatic dissipating fabric and method
AssigneeStern & Stern Textiles, Inc.
InventorsPeter B. Thornton, Stanley H. Cone, George W. Booz
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeStern & Stern Textiles, Inc.
InventorsPeter B. Thornton, Stanley H. Cone, George W. Booz
Estimating the term…
A directional electrostatic dissipating fabric and method of making such fabric constructed of a woven or knitted base fabric having an integrally woven or knitted grid structure which is raised above only one surface of the base fabric forming a fabric with a raised grid on one side and a smooth or substantially smooth grid on the other side thereby resulting in increased, directional electrostatic dissipation performance from the side having the raised grid. The grid is formed from an electroconductive yarn plied to a carrier yarn which is then integrally woven or knitted into the fabric in the warp direction, the fill direction or both, thereby producing a fabric which exhibits the rapid, yet controlled, directional dissipation of static electricity into the air. Such fabric can be used for anti-static covering cloths, filtration media and the like; but is particularly adapted for use in anti-static garments and it is particularly comfortable when the smooth or substantially smooth surface is adjacent the wearer and the raised surface is on the outside of the garment.
An improved static dissipating fabric comprising a base fabric constructed of base fabric yarn having a front surface and a back surface, a first plurality of electroconductive yarns constructed into said base fabric extending from said front surface to said back surface of said base fabric and extending substantially beyond the plane of said back surface in a substantially mutually parallel orientation to each other thereby forming a raised substantially parallel grid on said back surface of said base fabric and a smooth or substantially smooth grid on said front surface.
An improved static dissipating fabric comprising a base fabric having a front and a back surface which is woven from warp and fill base fabric yarn in a 2/1 twill construction, a first plurality of electroconductive yarns integrally woven into said base fabric at spaced locations across said warp of said base fabric in place of said base fabric warp yarn, each of said electroconductive warp yarns in said plurality of warp yarns having a diameter greater than the diameter of said base fabric warp yarns, a second plurality of electroconductive yarns integrally woven into said base fabric at spaced locations along the fill of said base fabric in place of said base fabric fill yarn, a first plurality of raised grid lines formed from peaks of said electroconductive warp yarn in the warp direction extending from said back surface of said base fabric at said spaced locations along said warp direction of said base fabric and a second plurality of raised grid lines formed from double floats of said electroconductive fill yarn in the fill direction extending from said back surface of said base fabric whereby the back surface of said fabric has a raised substantially rectangular grid of electrostatic yarn and the front surface of said fabric is substantially smooth.
The method of manufacturing the improved fabric of the present invention having a raised electroconductive grid on one side of the fabric and a smooth or substantially smooth grid on the other side of the fabric comprising the steps of:
The method of making the improved fabric of the present invention having a raised electroconductive grid on one side of the fabric and a smooth or substantially smooth grid on the other side of the fabric comprising the steps of:
Dependencies are inferred from the claim text.