Process for producing an antistatic yarn
US9138935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J1/229
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an antistatic yarn includes the steps of: (a) providing antistatic composite filaments having carbon black dispersed therein; (b) advancing the antistatic composite filaments to a first heating zone at a first advancing speed which ranges from 230 m/min to 330 m/min; (c) drawing the antistatic composite filaments from the first heating zone to a false twist zone at a second advancing speed such that a draw ratio of the second advancing speed to the first advancing speed ranges from 1.5 to 1.75, thereby obtaining false twisted filaments; and (d) heat-setting the false twisted filaments so as to obtain a permanent antistatic crimped yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.