Press felt for paper machine and method and device for producing said felt
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 26, 2013
Grant Date -
Feb 14, 2008
app pub date -
Apr 7, 2005
filing date -
Apr 8, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a press felt for use in the press section of a paper machine. Said felt comprises a nonwoven layer lying on one of its surfaces, the surface of said layer being connected and fixed to the felt by a thermoplastic binding material. According to the invention, the surface of the nonwoven layer is smoothed by the application of pressure from a smooth surface during the cooling of said layer surface from a temperature in excess of the melting temperature of the thermoplastic binding material to a temperature below the melting temperature. To manufacture the press felt, an untreated press felt, which contains the nonwoven layer and the thermoplastic binding agent is first produced, the thermoplastic binding agent being distributed in the nonwoven layer in the form of thermoplastic adhesive fibres and/or a thermoplastic adhesive component of bicomponent fibres. The desired press felt is produced from the untreated press felt by means of the aformentioned temperature and pressure treatment using a smooth surface, thus enabling the press felt to be simultaneously thermofixed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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