Michael S Hansen

US Patent:

6811879, Nov 2, 2004

Filed:

Aug 30, 2002

Appl. No.:

10/233252

Inventors:

Ramon C. Dezutter - Milton WA
Brian Wester - Sumner WA
Robert A. Veleber - Seatac WA
Michael R. Hansen - Seattle WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

B32B 516

US Classification:

428402, 428532, 428535, 428536, 4285371

Abstract:

The present invention is directed to a new form of pulp that is a flake having a specific size, density, and wet dispersibility. The flakes are easy to meter in specified quantities when adding to cementitious products, because bulk quantities of the flakes flow well in conduits and other enclosed containers. The pulp flakes can supply sufficient cellulose fiber to an extrusion process due to the flakes high fiber density. The pulp flakes have a wet dispersability that is comparable to some pulp sheets that have not been hammermilled. In one embodiment of the invention, a pulp flake is provided that has a wet dispersion of from about 60 to about 240 counts as measured by a standard British disintegrator. Another embodiment of a pulp flake has a density of from about 0. 3 to about 0. 7 g/cc.

US Patent:

6837452, Jan 4, 2005

Filed:

Aug 30, 2002

Appl. No.:

10/233037

Inventors:

Ramon C. Dezutter - Milton WA, US
Brian Wester - Sumner WA, US
Robert A. Veleber - Seatac WA, US
Michael R. Hansen - Seattle WA, US

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

B02C 1912

US Classification:

241 16, 162201, 241 21, 241 23

Abstract:

A process for making singulated pulp flakes is provided. The process includes dewatering liquid pulp stock to a consistency of about 30 to about 50% solids. The process includes initial flaking to break up the dewatered pulp bundles into semi-uniform flakes having a median size of from about 3 to about 5 mmand a consistency of from about 33 to about 55% solids. The process includes drying the flaked pulp to a consistency of from about 85 to about 97% solids. The process includes flaking a second time to separate the flakes that may have bonded during drying. The product “singulated” flakes then go to a baler for packaging. In another embodiment, the process includes blending the liquid pulp stock with at least one adjuvant prior to dewatering.

US Patent:

7201825, Apr 10, 2007

Filed:

Oct 25, 2002

Appl. No.:

10/280439

Inventors:

Ramon C. Dezutter - Milton WA, US
Michael R. Hansen - Seattle WA, US

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

D21F 11/00
D21C 9/00
D21B 1/14

US Classification:

162 9, 162 13, 162158, 162161, 1621811, 162205, 162194, 162100, 264153

Abstract:

Discrete particles of cellulosic material are flowable and meterable. They are easily dispersible in an aqueous or a dry medium. The particles comprise singulated cellulose fibers that have been densified. The particles have a density of at least 0. 3 g/cc.

US Patent:

7306846, Dec 11, 2007

Filed:

Aug 19, 2005

Appl. No.:

11/207209

Inventors:

Ramon C. Dezutter - Milton WA, US
Michael R. Hansen - Seattle WA, US

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

B32B 5/16

US Classification:

428402, 428326, 428392, 428393, 428364, 162100, 162141, 162146, 162147, 1621571, 1621574, 162231, 241 16

Abstract:

Discrete particles of cellulosic material are flowable and meterable. They are easily dispersible in an aqueous or a dry medium. The particles comprise singulated cellulose fibers that have been densified. The particles have a density of at least 0. 3 g/cc.

US Patent:

20040081828, Apr 29, 2004

Filed:

Oct 25, 2002

Appl. No.:

10/280277

Inventors:

Ramon Dezutter - Milton WA, US
Michael Hansen - Seattle WA, US

International Classification:

B32B005/16

US Classification:

428/393000, 428/402000

Abstract:

Discrete particles of cellulosic material are flowable and meterable. They are easily dispersible in an aqueous or a dry medium. The particles comprise singulated cellulose fibers that have been densified. The particles have a density of at least 0.3 g/cc.

US Patent:

62708937, Aug 7, 2001

Filed:

Mar 7, 1994

Appl. No.:

8/207393

Inventors:

Richard H. Young - Puyallup WA
Amar N. Neogi - Seattle WA
Michael R. Hansen - Everett WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

D02G 300

US Classification:

428372

Abstract:

A fiber product of discontinuous fibers coated with a binder containing carboxyl groups and solid particles of superabsorbent material adhered to the fibers by the carboxyl group containing binder.

US Patent:

51886243, Feb 23, 1993

Filed:

Jan 16, 1990

Appl. No.:

7/467797

Inventors:

Richard H. Young - Puyallup WA
Michael R. Hansen - Everett WA
E. Peter Lancaster - Gig Harbor WA
Haresh R. Mehta - Federal Way WA
Christel Brunnenkant - Seattle WA

Assignee:

Weyerhaeuser Company - Tacoma WA

International Classification:

A61F 1315
A61F 1320

US Classification:

604378

Abstract:

A composite absorbent article is described having a plural layer absorbent core comprising a bonded insert pad and a dispersion pad. The insert pad preferably comprises binder coated fibers to which superabsorbent particles are adhered. By using heat fusible binders, a heat bonded superabsorbent containing insert pad is provided. The dispersion pad also typically comprises fibers and enhances the wicking of liquid throughout the insert pad. In addition, the insert pad may be bound to the dispersion pad at the interface between the pads to provide a stronger composite structure and to also entangle the fibers of the two pads at their interface to improve the wicking of liquid from the dispersion pad into the insert pad. In addition, hydrophilic fibers may be included in the insert pad to enhance the wicking of liquid into the insert pad. The use of surfactant materials in the binder enhances the vertical wicking characteristics of the composite pad.

US Patent:

50571664, Oct 15, 1991

Filed:

Mar 20, 1989

Appl. No.:

7/326190

Inventors:

Richard H. Young - Puyallup WA
Amar N. Neogi - Seattle WA
Christel Brunnenkant - Seattle WA
James F. L. Lincoln - Kent WA
Michael R. Hansen - Everett WA

Assignee:

Weyerhaeuser Corporation - Tacoma WA

International Classification:

B27N 300
B27N 900

US Classification:

156 622

Abstract:

Discontinuous fibers are entrained in a gaseous medium and coated while entrained with a substantially continuous coating of a binder material. Plural coatings of various binder materials may be applied to the entrained fibers. Also, one or more solid particulate materials may be adhered to the fibers by the binder material as the binder material dries. The binder material may be heat bondable and mixed with other fibers for use in producing a wide variety of products.