Process for the preparation of UHMW multi-filament poly(alpha-olefin) yarns
US7846363B2 · kind B2 · utility
11Cited by
24References
21Claims
0Family size
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Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jan 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2931
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.