Unwind and feed system for elastomeric thread

Details Unwind and feed system for elastomeric thread Unwind and feed system for elastomeric thread

2011-02-01

2011-02-01

Dondero, William E (Department: 3654)

Winding, tensioning, or guiding

Material guide or guard

Rotatable

C242S418100, C242S419900, C242S615300, C242S131100

Reexamination Certificate

active

07878447

ABSTRACT:
An overend unwind system for unwinding tacky elastomeric fiber threads such as uncoated spandex thread, capturing the ballooning affect of the thread as the thread leaves the spool, applying a first-stage tension control on the thread adjacent where the thread leaves the spool, feeding the unwound thread to a nip in a downstream process, and applying a final tension increment to the thread adjacent where the thread enters the downstream process. All thread guide surfaces encountered by the thread after leaving the spool, and while the thread is under designed operating tension, are moving surfaces, such that the tensioned thread thereby experiences a reduced level of drag as the thread traverses its path of travel from the spool to the downstream process.

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BTSR, KTF-100RW, Catalog, Undated, 2 pages, Italy, publication date unknown.

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