Microwebs and nonwoven materials containing microwebs
US4813948A · kind A · utility
79Cited by
27References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Sep 1, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/619
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Microfiber microwebs are provided. The microfiber microwebs have relatively dense nuclei with individual fibers and/or fiber bundles protruding therefrom. The microfiber microwebs can be incorporated into nonwoven webs of blown microfibers, air-laid staple fibers, or wood pulp fibers as well as into shaped articles having porous covering materials. The microfiber microwebs are useful in sorbent, filtration, and thermal insulation materials. The microfiber microwebs are prepared by divellicating a microfiber web to form discrete particles of microfiber microwebs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.