Method of producing a fibrous preform
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 2009
Grant Date -
May 31, 2007
app pub date -
Dec 8, 2004
filing date -
Dec 8, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method for producing a fibrous preform, especially by needling a fiber material (e.g., discontinuous pitch-based or PAN-based fiber). A needle-penetrable mold plate (10) having at least one mold cavity (12) therein for receiving the fiber material is provided. The use of a needle-penetrable mold plate allows the mold plate having the fiber material therein to be passed freely through a linear needling device, such as a linear needling loom, without having to take rigorous care to limit a needling path to the discontinuous fiber material, as in the conventional art. The mold plate is moved relative to the needling device one or more times until a desired level of material density (sometimes measured by fiber content percentage) is attained. Preferably, the mold plate is additionally moved and/or allowed to move along a direction generally transverse to the direction along with the mold plate moves relative to the needling device, so as to avoid the conventional problem of needle 'tracking' and thereby create a better needling effect.
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