Process for making oriented melt-blown microfibers
US5141699A · kind A · utility
25Cited by
26References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jan 16, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for preparing melt-blown microfibers comprising extruding fiber-forming material through the orifices of a die into a high-velocity gaseous stream where the extruded material is rapidly attenuated into fibers, directing the attenuated fibers into a first open end of a tubular chamber disposed near the die and extending in a direction parallel to the path of the attenuated fibers as they leave the die, introducing air into the tubular chamber at a velocity sufficient to maintain the fibers under tension during travel through the chamber, and collecting the fibers after they leave the tubular chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.