Method and device for producing perforated nonwovens by hydrodynamic needing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 15, 2002
Grant Date -
N/A
app pub date -
Mar 17, 2000
filing date -
Mar 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and device produce nonwovens by hydrodynamic needling. A nonwoven with a basically clean hole structure on a drum with plastic elevations can be produced by energy-rich water jets. Depending on the thickness of the fibers used in the nonwoven, however, certain fibers can nevertheless be stretched transversely across a hole. In order to avoid or eliminate this, the perforated nonwoven is subjected to singeing flames after drying.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully