Wood pulp fiber morphology modifications through thermal drying

Details Wood pulp fiber morphology modifications through thermal drying Wood pulp fiber morphology modifications through thermal drying

2005-01-04

2005-01-04

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With chemical or physical modification of liberated fiber

C162S100000, C428S369000, C604S358000, C604S374000

Reexamination Certificate

active

06837970

ABSTRACT:
A method of modifying a two-dimensional, flat fiber morphology of a never-been-dried wood pulp into a three-dimensional twisted fiber morphology without the aid of a chemical cross-linker. The method includes the steps of treating a never-been-dried wood pulp fiber slurry with a drying aid and thermally drying the wood pulp fiber slurry. The method may alternatively, or additionally, include the steps of spray drying a wood pulp fiber slurry and/or a slurry of a hydrophilic material, and flash drying the spray dried wood pulp fiber slurry and/or slurry of hydrophilic material.

REFERENCES:
patent: 3497418 (1970-02-01), Thale et al.
patent: 3556931 (1971-01-01), Champaigne
patent: 3770575 (1973-11-01), Ball
patent: 3987968 (1976-10-01), Moore et al.
patent: 4183145 (1980-01-01), Piterskikh et al.
patent: 4481076 (1984-11-01), Herrick
patent: 4657767 (1987-04-01), Meade
patent: 4888093 (1989-12-01), Dean et al.
patent: 4898642 (1990-02-01), Moore et al.
patent: 5015332 (1991-05-01), Iwaya et al.
patent: 5100509 (1992-03-01), Pisecky et al.
patent: 5137537 (1992-08-01), Herron et al.
patent: 5190563 (1993-03-01), Herron et al.
patent: 5217445 (1993-06-01), Young et al.
patent: 5223088 (1993-06-01), Hansen
patent: 5435822 (1995-07-01), Blouin
patent: 5484896 (1996-01-01), Naieni et al.
patent: 5519948 (1996-05-01), Raehse et al.
patent: 5537759 (1996-07-01), Raehse et al.
patent: 5544427 (1996-08-01), Raehse et al.
patent: 5549791 (1996-08-01), Herron et al.
patent: 5562740 (1996-10-01), Cook et al.
patent: 5611840 (1997-03-01), Kraus et al.
patent: 5632100 (1997-05-01), Hansen
patent: 5632102 (1997-05-01), Luy et al.
patent: 5672249 (1997-09-01), Vinson et al.
patent: 5685089 (1997-11-01), Getler et al.
patent: 5695614 (1997-12-01), Hording et al.
patent: 5700352 (1997-12-01), Vinson et al.
patent: 5759346 (1998-06-01), Vinson
patent: 5830317 (1998-11-01), Vinson et al.
patent: 5834095 (1998-11-01), Dutkiewicz et al.
patent: 5849862 (1998-12-01), Davies et al.
patent: 5958185 (1999-09-01), Vinson et al.
patent: 6237247 (2001-05-01), Van Den Meersche
patent: O 096 460 (1983-12-01), None
patent: 252 650 (1988-01-01), None
patent: 3-267200 (1991-11-01), None
patent: WO 9423121 (1994-10-01), None
patent: 9700354 (1997-03-01), None
A.M. Scallan,The Structure of the Cell Wall of Wood—A Consequence of Anisotropic Inter-Microfibrillar Bonding?, Wood Science, vol. 6, No. 3, p. 266, 267, 269 & 271 (Jan. 1974).
Alfred J. Stamm and William E. SmithLaminar Sorption and Swelling Theory for Wood and Cellulose, Wood Science and Technology, vol. 3, p. 301-323 (1969).
A. J. Kerr and D. A. I. Goring,The Ultrastructural Arrangement of the Wood Cell Wall, Cellulose Chem. Technol., 9, p. 563-573 (1975).
G. Graham Allan and Young C. Ko,The Microporosity of Pubp. The Forces Influencing the Intra and Inter-Fiber Pore Structure and Pore Size Distribution in Pulp and Paper, Cellulose Chem. Technol., 29, p. 479-485 (1995).
D. A. I. Goring, R. Vuong, C. Gancet and H. Chanzy,The Flatness of Lignosulfonate Macromolecules as Demonstrated by Electron Microscopy, Journal of Applied Polymer Science, vol. 24, p. 931-936 (1979).
B. D. Favis and D.A.I. Goring,A Model for the Leaching of Lignin Macromolecules from Pulp Fibers, Journal of Pulp and Paper Science, p. 139-143 (Sep. 1984).
D. A. I. Goring,A Speculative Picture of the Delignification Process, Cellulose Chemistry and Technology, p. 273-277.
J. E. Stone and A. M. Scallan,A Study of Cell Wall Structure by Nitrogen Adsorption, Pulp Paper Magazine, Canada, T407 (1965).
Leonard Haas,Iggesund Pioneers Flash Drying of Fully Bleached Kraft Pulp, Progress in Pulping (4 pages) (1971).
H-E. Engstöm, O. B. Hovstad and L. Ivnäs,Flash Drying System for Pulp-Design Factors, reprinted fromPulp and Paper, Part 1, (4 pages) Aug. 21 and Aug. 28 (1967).
H-E. Engström, O. B. Hovstad and L. Ivnäs,Flash Dried Pulp-Some Revealing Facts on Strength and Beating Properties, reprinted fromPulp and Paper, Part 2, (4 pages) (1967).

Affiliated with

Also associated with

Rating

Wood pulp fiber morphology modifications through thermal drying does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wood pulp fiber morphology modifications through thermal drying, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wood pulp fiber morphology modifications through thermal drying will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3385577