Hydrolysis resistant polyaryletherketone fabric
AssigneeAlbany International Corp.
InventorVenanzio DiTullio
Life of this patent
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Abstract
An industrial fabric of woven monofilament threads comprised of a melt extrudable polyaryletherketone having hydrolysis resistance at elevated temperatures, such fabric exhibiting a high modulus of elongation making it suitable for conveying applications in various industrial processing.
Claims7
A fabric having machine direction and cross machine direction threads interwoven with one another in a repeated pattern and finished into an endless belt, wherein certain of the threads are a monofilament of a melt extrudable polyaryletherketone selected from the group consisting of polyetherketones having repeating units of --.PHI.-O-.PHI.-CO-- or --.PHI.-.PHI.-O-.PHI.-CO-- and polyetheretherketones having repeating units of --.PHI.-O-.PHI.-CO-.PHI.-O--.
A fabric having machine direction and cross machine direction threads interwoven with one another in a repeated pattern and finished into an endless belt with threads of the belt being thermally set after weaving to stabilize the fabric;
- wherein certain of the threads are a monofilament polyaryletherketone having thermal resistance of 90% retention of tensile strength at temperatures up to 500.degree. F.;
- and the fabric has a modulus of at least 4,000 for an open area of within thirty percent.
A fabric having machine direction and cross machine direction threads interwoven with one another in a repeated pattern and finished into an endless belt with the threads of the belt being thermally set after weaving to stabilize the fabric;
- wherein certain of the threads are of polyetheretherketone having hydrolysis resistance of maintaining 90% of tensile strength upon submission to moist heat of 250.degree. F. at 15 compounds per square inch.
Dependencies are inferred from the claim text.