Anti-static dryer fabrics
AssigneeScapa Dryers, Inc.
InventorWilliam T. Westhead
Life of this patent
Estimating the term…
Abstract
A dryer felt or fabric with a reduced potential for creating static electricity when running on a papermaking machine. The fabric is woven from a number of machine direction and cross-machine direction yarns with selected machine direction and/or cross-machine direction yarns comprising a blend of anti-static yarn combined with other yarns. The anti-static yarn may take the form of a staple, continuous filament or monofilament and may be a carbon content acrylic anti-static fiber, a silver coated nylon continuous filament, a nylon monofilament coated with carbon, or an acrylic fiber carbon coated. After being woven, the fabric is typically resin treated with a heat-resistant resin.
Claims30
A dryer fabric having face and back surfaces, said dryer fabric comprising:
- a plurality of machine direction and cross-machine direction yarns interwoven to define machine roll contacting floats on both the face and back surfaces of said fabric, a select number of the yarns that define said floats being anti-static yarns, said select number of yarns chosen so that floats defined by anti-static yarns are present on both the face and back surfaces of said fabric, each of said anti-static yarns comprising a non-conductive synthetic yarn incorporating a component exhibiting anti-static properties.
Dependencies are inferred from the claim text.