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US 11,590,685 B2Granted
Fiber aggregation, short fiber and method of manufacturing the same, and film and method of manufacturing the same
AssigneeRicoh Company, Ltd.
InventorsSohichiroh Iida, Hitoshi Iwatsuki, Mitsuru Naruse, Satoshi Ogawa, Yunsheng Sun
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Abstract
A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
Claims20
A method of manufacturing short fiber comprising:
- mutually joining fiber comprising a thermoplastic resin to manufacture a fiber aggregation;
- and
- cutting the fiber aggregation into short fiber having a ratio of a mean volume diameter to a mean number diameter of 1.5 or less,
- wherein the short fiber has a fiber diameter of from 1 to 150 μm,
- wherein the mean volume diameter of the short fiber is 150 μm or less, and
- wherein the fiber aggregation has a porosity of 5 to 25 percent by volume.
3 more elements
A method of manufacturing a film comprising:
- mutually joining fiber comprising a thermoplastic resin to manufacture a fiber aggregation;
- and
- cutting the fiber aggregation into the film comprising an aggregation of fibers having a ratio of a mean volume diameter to a mean number diameter of 1.5 or less,
- wherein the fiber has a fiber diameter of from 1 to 150 μm, and
- wherein the fiber aggregation has a porosity of 5 to 25 percent by volume.
2 more elements
Dependencies are inferred from the claim text.