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US 11,421,360 B2Granted
Fiber sheet and method for manufacturing same
AssigneeKabushiki Kaisha Toshiba
InventorsYoko Tokuno, Ikuo Uematsu
Life of this patent
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Abstract
According to one embodiment, a fiber sheet includes a plurality of fibers. The plurality of fibers are in a closely-adhered state. All of the following (1) to (3) are satisfied, where F1 is a tensile strength in a first direction, and F2 is a tensile strength in a second direction orthogonal to the first direction: (1) F2>F1; (2) F1 is 1 MPa or more; and (3) F2/F1 is 2 or more.
Claims4
A fiber sheet formed of deposited fibers, comprising:
- fibers including a bio-affinity material and an amid group;
- an orientation degree parameter expressed by the following formulas being 1.1 or more when a surface of the fiber sheet is analyzed using a polarized FT-IR-ATR method:
- the orientation degree parameter is R1/R2;
- R1 is a first absorbance ratio in a first polarization direction;
- R2 is a second absorbance ratio when an orientation of the fiber sheet has been rotated 90°;
- R1>R2;
- and
- the absorbance ratio is T1/T2, wherein T1 is an absorption intensity for a wave number of 1640 cm−1, and T2 is an absorption intensity for a wave number of 1540 cm−1.
5 more elements
A fiber sheet formed of deposited fibers, comprising:
- fibers being in a closely-adhered state by a capillary force when a volatile liquid provided among the fibers is dried;
- all of following (1) to (3) being satisfied, wherein F1 is a tensile strength in a first direction of the fiber sheet, and F2 is a tensile strength in a second direction orthogonal to the first direction:
- (1) F2>F1;
- (2) F1 is 1 MPa or more;
- and
- (3) F2/F1 is 2 or more.
3 more elements
Dependencies are inferred from the claim text.