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US 5,510,184 AGranted
Yarn for formable sheet structures and process for preparing the yarn
AssigneeHoechst Aktiengesellschaft
InventorsJorgen Due, Bjarne Graves, Henning Bak
Life of this patent
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Abstract
Textured yarns which can be processed for example by deep-drawing into irreversibly highly formable woven or knitted fabrics and a process for their preparation are described. These yarns have degrees of elasticity of below 50% and contain at least as carrier component undrawn but partially oriented polyester filaments which have been improved by a heat treatment in their flow stress.
Claims8
A yarn for preparing irreversibly highly formable textile sheet structures by weaving or knitting comprising a carrier component and a non-carrier component
- wherein said yarn is textured, and has a degree of elasticity under a load of 5 cN/tex of below 50%,
- the carrier component contains partially oriented, undrawn polyester filaments in an amount of 6 to 100% by weight of the total linear density of the yarn and said filaments have a birefringence of at least 27.times.10.sup.-3, an elongation at break between 70 and 200% and a flow stress of at least 6 cN/tex.
Dependencies are inferred from the claim text.