Nonwoven fabrics
US5891814A · kind A · utility
39Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to improved polypropylene nonwoven fabrics. The fabrics are made from isotactic polypropylene which has been produced with a catalyst systems comprising at least two metallocenes. These nonwoven fabrics, particularly when prepared using a spunbonding process, exhibit significantly improved strength without significant sacrifice of other favorable properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.