Dryer felts
AssigneeScapa Dryers, Inc.
InventorWilliam T. Westhead
Life of this patent
Estimating the term…
Abstract
A dryer felt comprising a plurality of warp yarns and a plurality of weft yarns interwoven according to a selected weave pattern. A characteristic of the dryer felt being that at least one of the yarns comprises a core fiber made from a synthetic monofilament, a synthetic multifilament, or a synthetic fiber, a first sheath formed by wrapping a first high temperature resistant aramid fiber around the core fiber in a first direction, a second sheath formed by wrapping a second high temperature resistant aramid fiber around the first sheath in a direction different from the first direction, and a covering formed by coating the second sheath with a high temperature resistant resin.
Claims55
A dryer felt comprising a plurality of warp yarns and a plurality of weft yarns interwoven according to a selected weave pattern, at least one of said yarns comprising a core fiber, a first sheath formed by wrapping a second fiber around said core fiber in a first direction wherein said wrapping of said second fiber forms a close fitting covering entirely around said core fiber, a second sheath formed by wrapping a third fiber around said first sheath in a direction different from said first direction wherein said wrapping of said third fiber forms a close fitting covering entirely around said first sheath, and a covering formed by coating said second sheath with a resin.
A dryer felt comprising a plurality of warp yarns and a plurality of weft yarns interwoven according to a selected weave pattern, at least one of said yarns comprising a polyester core fiber, a first sheath formed by wrapping a first heat resistant aramid fiber around said core fiber in a first direction wherein said wrapping of said first heat resistant aramid fiber forms a close fitting covering entirely around said polyester core fiber, a second sheath formed by wrapping a second heat resistant aramid fiber around said first sheath in a direction different from said first direction wherein said wrapping of said second heat resistant aramid fiber forms a close fitting covering entirely around said first sheath, and a covering formed by coating said second sheath with a high temperature resistant resin.
A dryer felt comprising a plurality of warp yarns, each warp yarn having a diameter in the range of about 5 to 50 mils, and a plurality of weft yarns, each weft yarn having a diameter in the range of about 5 to 50 mils, interwoven according to a selected weave pattern, at least one of said yarns comprising a polyester core fiber, a first sheath formed by wrapping, in accordance with a first wrap angle in the range of about 5.degree. to 85.degree., a first heat resistant aramid fiber around said core fiber in a first direction wherein said wrapping of said first resistant aramid fiber forms a close fitting covering entirely around said core fiber, a second sheath formed by wrapping, in accordance with a second wrap angle in the range of about 5.degree. to 85.degree., a second heat resistant aramid fiber around said first sheath in a direction different from said first direction wherein said wrapping of said second heat resistant aramid fiber forms a close fitting covering entirely around said first sheath, and a covering formed by coating said second sheath with a high temperature resistant resin.
Dependencies are inferred from the claim text.