Method for permanently and uniformly incorporating an additive into an undrawn fiber
US4001367A · kind A · utility
29Cited by
8References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1974 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Nov 7, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D10/0436
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Additives can be permanently incorporated into melt spun fibers by cold drawing the fibers under conditions that generate a network of interconnecting microvoids within the fiber. The microvoids are formed concurrently with the drawing of the fiber in a non-solvent liquid or vapor media, which media fills the microvoid network. The temperature of the medium is below the effective glass transition temperature of the fibers containing said medium. The additive is either present in said medium or is applied to drawn fibers containing said medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.