Hollow fiber fabric and process for producing the same
US5604012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Aug 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/612
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A hollow fiber fabric comprising hollow fibers having a high hollowness ratio of at least 20% and composed of a polymer of a single composition, and the hollow fibers having slits as traces of a removed polymer and the slits being formed in the longitudinal direction of the fibers in such a state that the slits communicate to hollow portions. The fabric is produced by treating a fabric comprising hollow fibers having a high hollowness ratio of at least 20% and composed of a polymer of a single composition with a solvent or solution which dissolves the polymer, to partially dissolve the polymer at low orientation and/or deformation strain concentrated portions, to form slits as traces of a removed polymer in such a state that the slits communicate to hollow portions, along the longitudinal direction of the hollow fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.