Paper making and fiber liberation – Processes and products – Mineral fiber
Reexamination Certificate
2011-01-04
2011-01-04
Daniels, Matthew J. (Department: 1791)
Paper making and fiber liberation
Processes and products
Mineral fiber
C162S158000, C162S175000, C162S217000
Reexamination Certificate
active
07862687
ABSTRACT:
A process useful for producing low density high mineral wool based acoustical panels with improved acoustical absorption properties using a water felting process is disclosed. The process includes forming a dilute slurry mixture including water, mineral wool, a thermoplastic binder and/or starch; and distributing the dilute slurry on a porous carrier to have the slurry dewatered to a base mat by gravity drainage to remove water by gravity. A vacuum is adjusted to gradually apply vacuum to the gravity dewatered base mat to further dewater the base mat without subjecting the mat to static pressure that would compress the base mat. The base mat is dried to form an acoustical ceiling product that has a low density and excellent acoustical absorption properties.
REFERENCES:
patent: 3498404 (1970-03-01), Roberts
patent: 4062721 (1977-12-01), Guyer et al.
patent: 4263093 (1981-04-01), Shenk
patent: 5047120 (1991-09-01), Izard et al.
patent: 5071511 (1991-12-01), Pittman
patent: 5124805 (1992-06-01), Chung et al.
patent: 5250153 (1993-10-01), Izard et al.
patent: 5558710 (1996-09-01), Baig
patent: 5905234 (1999-05-01), Tsukamoto et al.
patent: 5911818 (1999-06-01), Baig
patent: 5964934 (1999-10-01), Englert
patent: 6109388 (2000-08-01), Tsukamoto et al.
patent: 6443256 (2002-09-01), Baig
patent: 6616804 (2003-09-01), Foster et al.
patent: 6855753 (2005-02-01), Englert
patent: 2004/0209071 (2004-10-01), Carbo et al.
patent: 2005/0191465 (2005-09-01), Mayers et al.
patent: 2007/0056705 (2007-03-01), Baig et al.
patent: 54063514 (1979-05-01), None
patent: 58072441 (1983-04-01), None
patent: WO 88/05097 (1988-07-01), None
North American Insulation Manufacturers Association, Insulation Facts #63 Health and Safety Facts for Rock and Slag Wool, www.naima.org, Pub. No. NO41 Apr. 2002.
USG Corporation, Material Safety Data Sheet BRIO™ClimaPlus™ Acoustical Ceiling Panels and Tiles, MSDS # 41-100-002, www.usg.com, (May 25, 2005), pp. 1-9.
USG Corporation, Construction selector, www.usg.com, SA100 (rev. Mar. 2002).
Thermafiber, Inc., Thermafiber SOUNDZERO® Fabric-Faced Interior Acoustical Blanket product sheet, TRF719 (rev. Feb. 2006).
Armstrong World Industries, Material Data Safety Sheet #23 for PrivacyGuard™ Plus/Max Man made Vitreous Fiber Acoustical Core Board (Oct. 29, 2002), www.armstrong.com/privacyguard (2002).
Armstrong World Industries, product Sheet for PrivacyGuard™ Plus Man made Vitreous Fiber Acoustical Core Board, www.armstrong.com/privacyguard (2002).
Armstrong World Industries, product Sheet for PrivacyGuard™ Max Man made Vitreous Fiber Acoustical Core Board, www.armstrong.com/privacyguard (2003).
AIA/Architectural Record Continuing Education Series, Understanding Acoustics in Architectural Design, advertising Supplement provided by USG Corporation, www.usg.com, p. 168 (undated) Printed 2007.
Thermafiber, Inc., Thermafiber® NCR-Absorption Coefficients 1/3 Oct. Band Center Freq. Hz (Jul. 12, 2004).
International Search Report of patent cooperation treaty application No. PCT/US2008/079338.
Englert Mark H.
Yu Qing
Cordray Dennis
Daniels Matthew J.
Novak Druce & Quigg LLP
United States Gypsum Company
LandOfFree
Process for producing a low density acoustical panel with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing a low density acoustical panel with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing a low density acoustical panel with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2709572