D - Textiles – Paper – 02 – G
Patent
D - Textiles, Paper
02
G
28/30
D02G 1/16 (2006.01) D02G 1/18 (2006.01) D02G 1/20 (2006.01) D02G 3/34 (2006.01) D02G 3/46 (2006.01)
Patent
CA 1171262
A B S T R A C T Synthetic yarn and yarn-like structures are formed by the method of treating separate strands of thermoplastic material so that at least one has a shrinkage ratio higher than normal at an elevated temperature. The strands are intermingled in a gas stream with formation of loops on the strands, then heated to cause them to shrink differentially while being held until shrinkage ceases. Apparatus for performing the method includes yarn drawing means, intermingling means comprising a jet device incorporating intersecting passages for the strands and for a gas under pressure, feeding means and heating and cooling means for the intermingled yarn downstream from the jet device, also means for holding the intermingled yarn to a predetermined length while it is being heated and cooled. Yarn produced by the method incorporates filaments at least some of which present bud-like projections inhibiting relative movement of the filaments.
394724
Coats (j. & P.) Limited
Marks & Clerk
LandOfFree
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