HMPE fiber with improved bending fatigue performance
US11306432B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Feb 22, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2321/0211
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided are continuous filament-based elongate bodies having improved durability and bending fatigue performance. The elongate bodies are formed from a plurality of fibers where at least one component fiber is a multifilament ultra-high molecular weight polyolefin fiber having a filament intrinsic viscosity (IVf) of from 15 dl/g to about 45 dl/g when measured in decalin at 135° C., wherein said at least one multifilament ultra-high molecular weight polyolefin fiber has a tenacity of at least 32 g/denier, a denier of greater than 800, and a denier per filament of greater than 2.0. The high tenacity combined with high fiber denier and high filament denier (dpf) enhances the cyclic bend over sheave (CBOS) durability when the elongate body is incorporated in a multi-fiber construction such as a rope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.