Woven geotextile filtration fabrics including core-sheath spun yarns
AssigneeWillacoochee Industrial Fabrics, Inc.
InventorsKevin William Ray, Eric Lee Booth
Life of this patent
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Abstract
Disclosed are exemplary embodiments of woven filtration fabrics that include core-sheath spun yarns in either or both of the warp and weft directions.
Claims18
A woven geotextile filtration fabric comprising core-sheath spun yarn in one of a warp direction and a weft direction, and polypropylene monofilament yarn in the other one of the warp and weft directions, wherein:
- the core-sheath spun yarn comprises a polypropylene core and a polypropylene or polyester fiber sheath;
- the polypropylene monofilament yarn has an oval cross section;
- the polypropylene core has a round cross section;
- and
- the polypropylene or polyester fiber sheath has a round cross section.
A woven geotextile filtration fabric comprising weft yarns and warp yarns interwoven with the weft yarns to thereby provide the woven geotextile filtration fabric, wherein either or both of the warp yarns and weft yarns comprise core-sheath spun yarn, wherein:
- one of the weft yarns and warp yarns comprise the core-sheath spun yarn;
- the other one of the weft yarns and warp yarns comprise polypropylene monofilament yarn;
- the core-sheath spun yarn comprises a polypropylene core and a polypropylene or polyester fiber sheath;
- the polypropylene monofilament yarn has an oval cross section;
- the polypropylene core has a round cross section;
- and
- the polypropylene or polyester fiber sheath has a round cross section.
Dependencies are inferred from the claim text.