Process and systems for making synthetic bulked continuous...

Details Process and systems for making synthetic bulked continuous... Process and systems for making synthetic bulked continuous...

D - Textiles, Paper

01

D

D01D 10/02 (2006.01) D01D 5/16 (2006.01) D01F 6/60 (2006.01) D02G 3/24 (2006.01)

Patent

CA 2351108

Processes and apparatus are provided whereby the morphology of bulked continuous filament (BCF) yarns can be variably controlled. More specifically, according to the present invention, the BCF yarn is melt-spun, 'drawn and textured, most preferably in a one-step spin-draw-texture (SDT) process, wherein prior to texturing, the yarn is subjected to a differential temperature condition. Most preferably, such differential temperature condition is accomplished using the duo rolls employed in drawing the BCF, such that one of the rolls is maintained at a greater temperature as compared to the other of the rolls. Most preferably, it is the upstream-most roll (relative to the general conveyance path of the filament toward the texturizer) which is the hotter of the duo rolls.

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