Spinning nozzle, process for producing fibrous mass, fibrous mass, and paper
AssigneeMitsubishi Chemical Corporation
InventorsYoshinobu Kotera, Yukio Onohara, Shima Nakanishi
Life of this patent
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Abstract
A spinning nozzle which has a perforated part in which ejection holes have been arranged in a density as high as 600-1,200 holes/mm2. This process for producing a fibrous bundle comprises ejecting a spinning dope having a viscosity as measured at 50° C. of 30-200 P from the ejection holes of the spinning nozzle to produce a fibrous bundle. This fibrous bundle has a single-fiber fineness of 0.005-0.01 dtex. By the wet-process direct spinning, a mass of nanofibers which are stably uniform and continuous can be produced at a high efficiency.
Claims7
1-10. (canceled).
A fibrous bundle, having:
- a single-fiber fineness of at least 0.005 dtex to no more than 0.01 dtex, and
- a total fineness of at least 4×103 dtex to no more than 8×105.
A paper, comprising:
- at least 80% by mass to no more than 85% by mass of a fiber having a single-fiber fineness of at least 0.005 dtex to no more than 0.01 dtex,
- wherein paper density is at least 3 g/m2 to no more than 30 g/m2.
Dependencies are inferred from the claim text.