Weyerhaeuser Company Limited

Other

Weyerhaeuser

Weyernaeuser Company

Michael R Hansen

Richard H Young, Sr

Amar N Neogi

Donald D Halabisky

Ramon C Dezutter

Christel Brunnenkant

Daniel M Shellhammer

Robert H Quick

David W Park

Brian Wester

James F Lincoln

Robert A Veleber

Paul G Gaddis

David G Marsh

E Peter Lancaster

William C Johnston, Jr

Haresh R Mehta

Kevin T Hodgson

Signaling methods and apparatuses are described for preventing flood irrigation water from overflowing in a trench, field, or other area. Signaling devices may include indicators such as a reflector, a flag, a light, or a sound device provided on an end of an elongate member having its opposite end engaged with the ground. A stake is driven into the ground near the elongate member in the trench or other area where water will flow. A breakaway link such as a strip of paper is engaged to either the indicator or the elongate member and also to the stake, causing the elongate member to be bent downward, with the breakaway link located in the trench where water will flow. When exposed to the flow of water, the breakaway link weakens and eventually tears such that the elongate member springs upward carrying the indicator with it, signaling an operator that water has reached that location in the trench.

Methods and apparatuses for indicating the location of water flowing in a field

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.

Flowable and meterable densified fiber particle

Process for making a flowable and meterable densified fiber particle

Fiber treated with an organic nonpolymeric binder is combined with superabsorbent particles in order to bind the particles to the fiber. The nonpolymeric organic binder comprises binder molecules that include at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles and at least one functional group capable of forming a hydrogen bond with the fiber. The superabsorbent particles have a hydrogen or coordinate covalent bonding functional site. The binder serves to bind the particles to the fiber through formation of hydrogen and/or coordinate covalent bonds.

Method of binding particles to binder treated fibers

A binder is applied to particles which are then combined with fibers to bind the particles to the fibers. The particles have functional sites for forming a hydrogen bond or a coordinate covalent bond. The fibers have hydrogen bonding functional sites. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers may be adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.

Method of binding binder treated particles to fibers

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.

Flowable and meterable densified fiber flake

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. In one embodiment, the pulp flake has a size of from about 3 to about 5 mm .

A highly densifiable wood pulp product is disclosed. In one embodiment, the densifiable product includes fibers having low coarseness, preferably having a fiber coarseness less than about 22 mg/100 m, and a densifying agent. In another embodiment, the densifiable product further includes fibers having coarseness greater than about 22 mg/100 m. Juvenile wood fibers are the preferred source of fibers having low coarseness. A densified pulp product formed by compacting a fibrous composite that includes fibers having a fiber coarseness less than about 22 mg/100 m, a densifying agent, and optionally, fibers having coarseness greater than about 22 mg/100 m is also disclosed. The pulp products can be advantageously incorporated into absorbent articles and can optionally further include superabsorbent material. Methods for forming the densifiable and densified fibrous products are also disclosed.

Compressible wood pulp product

The blood absorbence properties, e.g., free swell blood absorbence capacity and after load blood absorbence capacity of superabsorbent materials is enhanced by combining the superabsorbent materials with enhancing agents which serve to enhance the blood absorbent properties thereof. The enhancing agents in amounts ranging from about 0.01-8 weight percent is applied to the superabsorbent materials or they can be provided on a fibrous material to be combined with the superabsorbent materials. The enhancing agents are selected from materials that include functionalities that allow them to hydrogen bond to the superabsorbent material when the enhancing agent is applied directly thereto or combined with materials to which the enhancing agents have been applied.

Method of enhancing blood absorbence by superabsorbent material

Diol treated particles combined with fibers

Method for forming a diaper

Method for making superabsorbent containing diapers

Growing community of inventors

Seattle, WA, United States of America

Michael R Hansen