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AssigneeToray Industries, Inc.
InventorsKohei Takatani, Makoto Kibayashi, Koji Matsumoto, Kazuhisa Narusawa
Estimating the term…
A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath. Further, a drawing angle of single fibers formed by the single fibers and the spinneret surface of the spinneret is in a range from 83° to 87°, the single fibers being fibers discharged from the outermost spinning holes located in the short side direction of the spinneret and running to the fiber bundle diverting guide provided in the coagulation bath.
A spinning pack for semi-wet spinning, comprising a spinneret housing, a raw spinning solution passage formed inside the spinneret housing, a raw spinning solution feed port formed in the spinneret housing, for feeding the raw spinning solution into the raw spinning solution passage, and a spinneret installed in the spinneret housing and having numerous spinning holes arranged at intervals for discharging the raw spinning solution of the raw spinning solution passage, wherein the outer surface of the spinneret faces the liquid surface of a coagulating liquid through a gas phase, and wherein the number of the spinning holes is 6,000 or more and the aspect ratio Ra of an array of the spinning holes is 2.5 or more.
A fiber bundle diverting guide for changing a running direction of a fiber bundle, used in a coagulating bath tank of a semi-wet spinning apparatus, wherein the fiber bundle diverting guide has a curve having a radius of curvature of 1,000 to 3,000 mm in the major portion in the longitudinal direction thereof, and can be rotated around the axis thereof.
Dependencies are inferred from the claim text.