Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2010-09-14
2011-11-15
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Processes and products
Non-fiber additive
Reexamination Certificate
active
08057638
ABSTRACT:
A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
REFERENCES:
patent: 3197413 (1965-07-01), Wingerd
patent: 4052492 (1977-10-01), Kontny et al.
patent: 6068804 (2000-05-01), Betzner
patent: 6997405 (2006-02-01), Haruch
Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types), ASTM Standard Specification D 1751-04.
Barnes & Thornburg LLP
Halpern Mark
Ohlson Glenn W.
W.R. Meadows, Inc.
LandOfFree
Wet-end manufacturing process for bitumen-impregnated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wet-end manufacturing process for bitumen-impregnated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wet-end manufacturing process for bitumen-impregnated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4309863