Back to results
US 4,047,373 AGranted
False-twisting method and apparatus for producing crimped filament yarns
AssigneeOda Gosen Kogyo Kabushiki Kaisha
InventorIsao Takai
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeOda Gosen Kogyo Kabushiki Kaisha
InventorIsao Takai
Estimating the term…
A method and an apparatus for producing crimped filament yarns, said apparatus comprising at least one first twister member and at least one second twister member, each of said twister members having a work surface made of a synthetic rubber having a relatively small friction coefficient therebetween. These twister members are arranged so that their work surfaces cross each other at a selectable angle in contact relationship to provide at least one crossing zone for nipping therebetween at least one thermoplastic filament yarn which is fed to twist this filament yarn between the contacting work surfaces successively and at the same time to urge this filament to discharge from this crossing zone successively as the twister members are driven. This method and apparatus allow filament yarns to be imparted desired false-twisting effect, practically without being damaged and without causing uneven twists, at a high operation rate of 800 - 1000 meters per minute.
A false twisting method of nipping type for producing crimped filament yarns, comprising arranging at least two power-driven twister members having work surfaces of a relatively small friction coefficient therebetween in such a manner that these work surfaces successively cross each other in contact relationship at a selected angle to provide a crossing zone successively between these work surfaces, and feeding at least one filament yarn through said crossing zone to thereby subject said filament yarn to false twisting while nipping this filament yarn between said successively contacting work surfaces and urging, at the same time therewith, this filament yarn to advance successively from said crossing zone.
A false twisting apparatus of nipping type for producing crimped filament yarns, comprising:
Dependencies are inferred from the claim text.