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US 2003/0143394 A1Published application
High-DPF yarns with improved fatigue
AssigneeHoneywell International Inc.
InventorsPeter Bryan Rim, Farangis Kiani
Life of this patent
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Abstract
A product comprises a dimensionally stable polymeric multifilament yarn having a decitex per fiber count DPF of at least 7.5 and a fatigue strength retention FR, wherein preferred yarns are spun and drawn such that FR increases when DPF increases. Particularly preferred yarns are fabricated from poly(ethylene terephthalate) and have a DPF of between 10 and 20.
Claims27
A product comprising:
- a dimensionally stable polymeric multifilament yarn having a decitex per filament count DPF of at least 7.5 and a fatigue strength retention FR, wherein the yarn is spun and drawn such that when DPF increases at least 100% over a reference yarn, and FR increases at least 19% absolute over the reference yarn;
- and
- wherein the reference yarn has a fatigue strength retention of 64% and a DPF of 3.7 with a twist multiplier of 19700.
A method of forming a yarn comprising:
- providing a polymeric material and spinning a plurality of filaments from the polymeric material;
- and
- forming a dimensionally stable yarn from the plurality of filaments, wherein the yarn has a decitex per fiber count DPF of at least 7.5 and a fatigue strength retention FR;
- and
- wherein the yarn is spun and drawn such that FR increases when DPF increases.
2 more elements
A product comprising a dimensionally stable polymeric multifilament yarn having a decitex per fiber count DPF of at least 7.5.
A product comprising:
- a dimensionally stable polymeric multifilament yarn having a decitex per fiber count DPF of at least 7.5 and a fatigue strength retention FR, wherein the yarn is spun and drawn such that FR increases when DPF increases.
Dependencies are inferred from the claim text.