Process for high speed, multi-end polyester high performance tire and industrial yarn
US4851172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Oct 13, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J1/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improvement in a high speed process to produce high performance multi-end polyester yarn comprises extruding molten polyester from a spinnerette to form filaments, then cooling, lubricating and advancing the filaments to a forwarding roll system at the speed of from about 1000-4000 meters per minute so that a partially oriented yarn is produced, then feeding the filaments from the forwarding roll system to a first draw roll system to partially draw the yarn, then feeding the paritally drawn yarn to a second draw roll system having a draw point localizing device then feeding the filaments from the draw roll system to a conditioning roll system and finally taking up the filaments. The improvement is the use of matte finish on godet rolls having an arithmetic mean roll surface roughness value of from between about 35 microinches and about 120 microinches to feed and withdraw yarn to and from a draw point localizing device in the second draw roll system. This combination enables multiple ends of the filaments to be advanced through a single set of forwarding, drawing and conditioning rolls and yarn mechanical quality remains at a high level of acceptance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.