Title:
PROCESS AND RELATED APPARATUS FOR THE ON-LINE REALIZATION OF THE DRAWING AND WARPING STEPS OF POLYAMIDE MONOFILAMENTS
Document Type and Number:
WIPO Patent Application WO2001031099
Kind Code:
A3
Abstract:
A process and apparatus for the on-line realization of the drawing and warping steps of mono-filament threads (10) from polyamide comprising a first pre-tensioning step (4-4a; 6-6a-6b) of the mono-filament threads unwinding from cheeses positioned on a creel, by passage through a tension compensator for said threads, and a drawing step on a plurality of rolls (11-13, etc.) arranged by groups, each group being spaced with respect to the other one. Each group of rolls is contained in a separator-container (7-9) and, at the outlet of the threads from each group, they are positioned on a thread-guide-reed (18-18a-18b) and an ionizing bar (19) for the elimination of the electrostatic charges accumulated by the threads on their translation on said rolls. The plurality of simultaneously treated threads provides for a number of about 1200 threads kept spaced from one another by a value of between 1.4-1.6 mm.
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Inventors:
PEZZOLI LUIGI (IT)
Application Number:
PCT/IB2000/001549
Publication Date:
October 11, 2001
Filing Date:
October 27, 2000
Export Citation:
Assignee:
SITIP SPA (IT)
PEZZOLI LUIGI (IT)
PEZZOLI LUIGI (IT)
International Classes:
D02J1/22; D04B21/00; (IPC1-7): D02H5/02; D02H13/24; D02J1/22; D04B21/00
Foreign References:
| EP0349724A1 | 1990-01-10 | |||
| DE3018373A1 | 1981-11-19 | |||
| US5333364A | 1994-08-02 |
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