Winding – tensioning – or guiding – Helical or random winding of material – Including particular drive
Reexamination Certificate
2005-08-09
2005-08-09
Matecki, Kathy (Department: 3654)
Winding, tensioning, or guiding
Helical or random winding of material
Including particular drive
C242S486300, C242S486400, C242S178000, C242S477000
Reexamination Certificate
active
06926223
ABSTRACT:
The invention relates to a method for winding pre-oriented, non-crystalline polyester filaments onto a spool at a winding speed of at least 4,200 m/min, in which the wound filament is wound over the width of the spool by means of a flying traverse arm and is turned by a driven sensing roller with an applied pressure between 8 and 18 kg on the circumference of a spool placed on a driven spool-locating pin. The filaments for winding are introduced to the traverse thread guide at a thread tension of between 0.03 cN/dtex and 0.20 cN/dtex. The sensing roller is driven at an overspeed of preferably between 0.3 and 1.2%, in comparison with the spool circumferential speed. The thread laying angle is set between 3.5° and 7.5° by means of the spool travel. The above method permits a good spool formation even at high spooling speeds.
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Langdon Evan H
Matecki Kathy
McDonnell Boehnen & Hulbert & Berghoff LLP
Zimmer A.G.
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