Hollow shrinkable fiber for pile and manufacturing method thereof, and pile product
US6617024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Nov 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A hollow shrinkable fiber is manufactured by wet spinning a copolymer of acrylonitrile and a halogen-containing vinyl monomer, and then carrying out steam treatment, followed by drying treatment, and then heat treatment, thus forming a marrow-like or network-like hollow portion comprising a large number of voids in a core part of the fiber cross section. The void ratio of the fiber cross section is 10 to 50%, and the dry heat shrinkage percentage of the fiber is at least 15%. The fiber has a hollow form similar to that of natural fur, is excellent in terms of bulkiness, a lightweight feeling and warmth retention, and can be used as down hairs in pile products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.