Paper making and fiber liberation – Processes and products – Article forming processes
Reexamination Certificate
2006-07-11
2006-07-11
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Article forming processes
C162S218000, C162S223000, C162S224000, C162S382000, C162S396000, C162S397000, C241S060000, C241S113000, C264S087000
Reexamination Certificate
active
07074302
ABSTRACT:
A fibrous panel is molded in two or more progressively formed mold members each comprising a porous support plate to which a plurality of rigid mold pieces are affixed. The mold pieces are truncated 3D tapered structures, and are arranged on the support plate in a regular array so that an intersecting grid or lattice of channels is defined between them. A fiber stock is poured into a first mold member and the stock is compressed and dewatered to form a panel. The panel is removed from the first mold member and placed into a second mold member having narrower and shallower channels whose side walls are more upright than those of the first mold member. The panel is further compressed and dewatered in the second mold member, and is densified in both the vertical and lateral directions by virtue of the progressive formation of the mold members.
REFERENCES:
patent: 4702870 (1987-10-01), Setterholm et al.
patent: 4753713 (1988-06-01), Gunderson
patent: 5277854 (1994-01-01), Hunt
patent: 5833805 (1998-11-01), Emery
patent: 5876835 (1999-03-01), Noble et al.
patent: 5900304 (1999-05-01), Owens
patent: 6190151 (2001-02-01), Hunt
patent: 6451235 (2002-09-01), Owens
patent: 0 406 783 (1991-01-01), None
Copy of European Search Report for European Application No. 04257218.0; Filed Nov. 20, 2004; Date of Completion Apr. 22, 2005.
Cassidy Jimmy W.
Renck Lawrence E.
Alston & Bird LLP
Hug Eric
Sonoco Development Inc.
LandOfFree
Apparatus and process for forming three-dimensional fibrous... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and process for forming three-dimensional fibrous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and process for forming three-dimensional fibrous... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3574601