Method for producing sheet containing fine fibers
AssigneeOji Holdings Corporation
InventorsEiichi Mikami, Mitsuru Tsunoda, Hayato Fushimi
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Abstract
The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
Claims6
A sheet which comprises a layer which contains fine fibers having an average fiber width of 2 to 1000 nm and a hydrophilic polymer, wherein the hydrophilic polymer comprises at least one of polyethylene glycol and polyethylene oxide,
- wherein the content of the hydrophilic polymer is 20 to 200 mass parts with respect to 100 mass parts of the fine fibers,
- wherein the hydrophilic polymer has a number average molecular weight (Mn) of 2.0×104 to 1.0×107, and
- wherein the fine fibers comprise fine cellulose fibers having a phosphoric acid group.
A sheet which comprises a layer which contains fine fibers having an average fiber width of 2 to 1000 nm and a hydrophilic polymer,
- wherein the hydrophilic polymer comprises at least one of polyethylene glycol and polyethylene oxide,
- wherein the content of the hydrophilic polymer is 20 to 200 mass parts with respect to 100 mass parts of the fine fibers,
- wherein the hydrophilic polymer has a number average molecular weight (Mn) of 2.0×104 to 1.0×107;
- wherein the solid content concentration of the sheet is 88 to 99 mass %, and
- wherein the fine fibers comprise fine cellulose fibers having a phosphoric acid group.
Dependencies are inferred from the claim text.