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US 4,380,144 AGranted
Belt false twisting system
AssigneeMilliken Research Corporation
InventorWilliam J. Henry
Life of this patent
Estimating the term…
Abstract
A yarn system for continuous, synthetic yarn in which is imparted a false twist by the use of a cooperating belt system. In the use of the belt system, a cooling water recirculation system is employed to purify the recirculated water so that economy of operation can be achieved.
Claims2
A false twist crimping machine comprising:
- a primary heater, means to supply a yarn to said primary heater, a cooling bath, means to guide the yarn from said primary heater to said cooling bath, a belt false twisting mechanism, means to supply the yarn to said false twisting mechanism, means to take-up the yarn false twisted from said mechanism, means to supply a cooling liquid to said cooling bath and means operably associated with said cooling bath to purify and recirculate cooling water from said cooling bath to said means to supply a cooling liquid.
The method of false twist crimping a continuous multifilament, synthetic yarn in a machine employing a belt type false twist mechanism comprising the steps of:
- supplying a continuous, multifilament synthetic yarn, heating the supplied yarn, providing a cooling bath, supplying a cooling liquid to the cooling bath, directing the heated yarn through the cooling bath, extracting the cooling liquid from the cooling bath and purifying same, recirculating the purified cooling liquid to the cooling bath, supplying the cooled yarn to the belt type false twist mechanism, false twisting the yarn in the mechanism and taking up the false twisted yarn.
Dependencies are inferred from the claim text.