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US 4,110,965 AGranted
Spun-like hand yarn process
AssigneeMonsanto Company
InventorsBruce R. Bradley, Larry D. Eckelman, Donald G. Gilmer
Life of this patent
Estimating the term…
Abstract
Yarn comprising filaments of high and low elongations is false-twist heat-set. The yarn tension upon passage through the false twisting device is increased to a level sufficient to break the low elongation filaments, giving a yarn with a spun-like hand.
Claims5
A process for making a yarn with a spun-like hand, comprising:
- a. providing a feed yarn comprising first filaments having a given elongation to break and second filaments having a lower elongation to break
- b. simultaneously drawing and false-twist heat-setting said feed yarn at a draw ratio selected to break no substantial number of filaments prior to passage through the false-twist device, and
- c. increasing the tension on said yarn upon passage through said false-twist device to a tension level sufficient to break substantially only said second filaments, whereby the broken ends of said second filaments project outwardly from said yarn and portions of said second filaments intermediate said broken ends are intermingled with said first filaments.
Dependencies are inferred from the claim text.