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US 6,638,884 B2Granted
Compressible wood pulp product
AssigneeWeyerhaeuser Company
InventorsRobert H. Quick, Daniel M. Shellhammer, Michael R. Hansen, Richard H. Young, Sr.
Life of this patent
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AssigneeWeyerhaeuser Company
InventorsRobert H. Quick, Daniel M. Shellhammer, Michael R. Hansen, Richard H. Young, Sr.
Estimating the term…
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.
A wood pulp composition comprising wood fibers having a fiber coarseness less than about 22 mg/100 m and a densifying agent.
A compressible wood pulp composition formed by applying a densifying agent to wood fibers having a fiber coarseness less than about 22 mg/100 m.
A densified pulp product formed by compacting a fibrous web comprising a densifying agent and wood fibers having a fiber coarseness less than about 22 mg/100 m.
An absorbent article comprising a wood pulp composition comprising wood fibers having a fiber coarseness less than about 22 mg/100 m and a densifying agent.
An absorbent article comprising a compressible wood pulp composition formed by applying a densifying agent to wood fibers having a fiber coarseness less than about 22 mg/100 m.
An absorbent article comprising a densified pulp product formed by compacting a fibrous web comprising a densifying agent and wood fibers having a fiber coarseness less than about 22 mg/100 m.
An absorbent article comprising a wood pulp composition comprising wood fibers having a fiber coarseness less than about 22 mg/100 In, wood fibers having a fiber coarseness greater than about 22 mg/100 m, and a densifying agent.
An absorbent article comprising a compressible wood pulp composition formed by applying a densifying agent to wood fibers having a fiber coarseness less than about 22 mg/100 m and wood fibers having a fiber coarseness greater than about 22 mg/100 m.
An absorbent article comprising a densified pulp product formed by compacting a fibrous web comprising a densifying agent and wood fibers having a fiber coarseness less than about 22 mg/100 m and wood fibers having a fiber coarseness greater than about 22 mg/100 m.
Dependencies are inferred from the claim text.