Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2006-11-21
2006-11-21
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S900000, C442S270000, C442S271000, C442S274000, C442S324000, C442S213000, C442S217000, C442S002000, C442S005000, C442S050000
Reexamination Certificate
active
07138037
ABSTRACT:
A press felt for use in the press section of a papermaking machine is provided. The press felt includes a base fabric layer and at least one layer of a staple fiber batt material connected thereto. The press felt has a paper side surface (PS) which when in operation is in contact with a paper web conveyed thereon and a machine side surface (MS) which contacts various press section components. The base fabric layer includes a regenerated cellulosic component in either or both the MD and CD yarns. Regenerated cellulosic fibers may also be provided in the batt and/or scrims located in the batt to improve dewatering when compared to similarly constructed felts which lack this regenerated cellulosic material.
REFERENCES:
patent: 3392079 (1968-07-01), Fekete
patent: 4162190 (1979-07-01), Ashworth
patent: 4323622 (1982-04-01), Gladh et al.
patent: 4439481 (1984-03-01), Johnson et al.
patent: 4520059 (1985-05-01), Worrall et al.
patent: 4529643 (1985-07-01), Lundstrom
patent: 4781967 (1988-11-01), Legge et al.
patent: 5135802 (1992-08-01), Gstrein et al.
patent: 5204171 (1993-04-01), Eschmann
patent: 5232768 (1993-08-01), Eklund et al.
patent: 5268076 (1993-12-01), Best et al.
patent: 5328757 (1994-07-01), Kenney et al.
patent: 5360656 (1994-11-01), Rexfelt et al.
patent: 5864931 (1999-02-01), Best et al.
patent: 6140260 (2000-10-01), Johnson et al.
patent: 6159880 (2000-12-01), Schiel
patent: 6171446 (2001-01-01), Diaz-Kotti
patent: 6592636 (2003-07-01), Joyce
patent: 6616812 (2003-09-01), Beck
patent: 1 413 673 (2004-04-01), None
patent: 2 332 916 (1999-07-01), None
patent: 2 992 767 (1999-12-01), None
patent: 2005256227 (2005-09-01), None
patent: WO 99/32715 (1999-07-01), None
patent: WO 01/27387 (2001-04-01), None
patent: WO 03/023106 (2003-02-01), None
Wahlstrom, B., 1960.A Long Term Study of Water Removal and Moisture Distribution on a Newsprint Machine Press Section. Paper presented at 46th Annual Meeting Technical Section, Canadian Pulp and Paper Association (Montreal, QC, Jan. 26-29, 1960), pp. 271-327.
Morrison, R.E. 1969.Felt Capillary Structure and Water Removal. Pulp and paper Magaine, vol. 70, No. 3 (Feb. 1969), pp. 58-62.
Wahlstrom, B. 1969.Our Present Understanding of the Fundamentals of Pressing. Abbreviated from Pulp & Paper Magazine of Canada, vol. 70, No. 10 (Oct. 3, 1969), pp. 76-96.
Wiseman, Nick.The Effect of Felt Properties on the Pressing of Paper. Pulp and Paper Canada, vol. 77, No. 9 (Sep. 1978), pp. T149-T153.
Bliesner, William C. 1978.Sheet Water Removal In a Press: the Role of Wet Felt Properties. Pulp and Paper, vol. 52, No. 11 (Oct. 1978), pp. 76-79.
Beck, David A. 1986.Re-examining Wet Pressing Fundamentals: a Look Inside the Nip Using Dynamic Measurement. From Proceedings TAPPI Engineering Conference (Atlanta, GA: Sep. 22-25, 1986), Book 1, pp. 105-115.
Palokangas, Antti. 1990.Press Felt to Increase Dryness by Avoiding Rewetting. Paper presented at Modem Technologies in Pressing and Drying, Pira, (Bournemouth, UK, Nov. 6-8, 1990, vol. 1), 8 pp.
Talja. R.; Honkalampi, P. 1994.Compressibility and Flow Resistance of Porous Medium. Paper presented at 80thAnnual Meeting Technical Section, Canadian Pulp and Paper Association (Montreal, QC, Feb. 1-2, 1994), Preprints A, pp. A187-A190.
Antos, Dave. 1995.Paper Machine Clothing Developments Aimed at Increased Production and Quality. Paper Age, (Jun. 1995), pp. 10-14.
Mercer, Colin. 1998.Use of Membrane Composites in Press Felts Enhance Pressing Efficiency. Paper presented at 84thAnnual Meeting Technical Section, Canadian Pulp and Paper Association (Montreal, QC, Jan. 27-30, 1998), Preprints B, pp. B197-B204.
Shidara, Toyohisa. 2000.Roles of press felt in press section of paper machine—dewatering mechanism and felt design. Japan Tappi Journal, vol. 54, No. 5 (May 2000), pp. 22-28.
Patterson, B. 2003.Enhanced Water Removal Pressing. Paper presented at 89thAnnual Meeting Technical Section, Pulp and Paper Technical Association of Canada, (Montreal, QC, Canada, 27-30 Jan. 2003), session 4B-2, 5 pp. Montreal, Canada.
Despault Marc P.
Patterson Brady S.
AstenJohnson, Inc.
Hug Eric
Volpe and Koenig PC
LandOfFree
Press felt with base fabric layer which includes regenerated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Press felt with base fabric layer which includes regenerated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Press felt with base fabric layer which includes regenerated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3653371