Process for producing dried singulated crosslinked cellulose pulp fibers
First Claim
1. A process for producing crosslinked, singulated pulp fibers comprising:
- treating never-dried wet pulp received directly from a pulp mill with a crosslinker;
introducing said never-dried wet pulp directly from a pulp mill and air into a jet drier;
thereafter drying and crosslinking said pulp in said jet drier to form singulated pulp fibers; and
removing said pulp from said jet drier and separating said dried pulp fibers from said air in said jet drier, thereby producing a crosslinked singulated pulp fibers having knots, fines and accepts.
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Accused Products
Abstract
This invention provides a dried singulated crosslinked cellulose pulp fiber product as well as an apparatus and a method for forming singulated, crosslinked, and dried fibers. In accordance with the process, a feed pulp containing a crosslinker is delivered to a jet drier. The jet drier singulates and dries the feed pulp. The singulated and dried fibers are collected from the jet drier. The feed pulp may be further treated with a treatment substance. The jet drier may be maintained at negative pressure. The product fibers may have low knot count, a low fines count, as well improved kink, curl and twist. The apparatus for carrying out the process may include a pretreatment station for supplying the treatment substance, a pulp feed device designed for pulp, a pulp feed device designed for pulp and foam suspensions, and/or a fiber separation station having a vacuum conveyor.
97 Citations
28 Claims
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1. A process for producing crosslinked, singulated pulp fibers comprising:
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treating never-dried wet pulp received directly from a pulp mill with a crosslinker; introducing said never-dried wet pulp directly from a pulp mill and air into a jet drier; thereafter drying and crosslinking said pulp in said jet drier to form singulated pulp fibers; and removing said pulp from said jet drier and separating said dried pulp fibers from said air in said jet drier, thereby producing a crosslinked singulated pulp fibers having knots, fines and accepts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A process for producing crosslinked, singulated pulp fibers comprising:
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treating never-dried wet pulp received directly from a pulp mill with a crosslinker; introducing air and said never-dried wet pulp directly from a pulp mill without mechanical defibering into a jet drier; thereafter drying said pulp in said jet drier to form singulated pulp fibers; and removing said pulp from said jet drier and separating said dried pulp fibers from said air in said jet drier, thereby producing a crosslinked singulated pulp fibers having knots, fines and accepts.
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Specification