Process for preparing yarn component suitable for use in formable sheet structures
AssigneeHoechst Aktiengesellschaft
InventorsJorgen Due, Bjarne Graves, Henning Bak
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Abstract
A yarn component containing at least one filament is prepared by: selecting at least one partially oriented, undrawn synthetic filament having a birefringence of at least 20.times.10.sup.-3 and an elongation at break of 70-200%, and subjecting the thus-selected filament or filaments to a heat treatment at 100.degree.-180.degree. C. under tension. The resulting yarn component has a degree of elasticity under a load of 5 cN/tex of less than 50%, which causes the yarn to be especially well suited for use in formable sheet structures.
Claims8
A method for preparing a yarn component containing at least one filament, said method comprising the steps of:
- selecting, as said filament or filaments, at least one partially oriented, undrawn synthetic filament having a birefringence at least 20.times.10.sup.-3 and an elongation at break of 70-200%, and
- subjecting the thus-selected filament or filaments to a heat treatment at 100.degree.-180.degree. C. under tension.
A method for preparing a one-component or multi-component yarn, comprising the steps of:
- selecting, as the filaments for said yarn, partially oriented, undrawn synthetic filaments having a birefringence of at least 20.times.10.sup.-3 and an elongation at break of 70-200%,
- subjecting the thus-selected filaments to a heat treatment at 100.degree.-180.degree. C. under tension, and
- producing from the thus-treated filaments a yarn having a degree of elasticity under load of 5 cN/tex of less than 50%.
Dependencies are inferred from the claim text.