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US 12,454,772 B2Granted
Sub-micron fibrous membrane and method for producing same
AssigneeIdklab Inc.
InventorWontae Hwang
Life of this patent
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Abstract
Provided are a sub-micron fibrous membrane in which sub-micron fibers aligned along one axis and sub-micron fibers in a random pattern form a network, and a method for producing the sub-micron fibrous membrane.
Claims19
A sub-micron fibrous membrane comprising:
- a plurality of first sub-micron fibers spun in alignment along a first horizontal direction;
- and
- a plurality of second sub-micron fibers spun in a random pattern to form a network with the plurality of first sub-micron fibers,
- wherein the plurality of first sub-micron fibers is formed through a plurality of first electrospinning portions to which a first voltage is applied, for aligning and spinning sub-micron fibers in the first horizontal direction, and the plurality of second sub-micron fibers is formed through a plurality of second electrospinning portions to which the first voltage is applied, for randomly spinning sub-micron fibers.
1 more element
A mask with a sub-micron fibrous membrane included in a filter,
- wherein the sub-micron fibrous membrane comprises
- a plurality of first sub-micron fibers spun in alignment along a first horizontal direction;
- and
- a plurality of second sub-micron fibers spun in a random pattern to form a network with the plurality of first sub-micron fibers.
1 more element
A method for producing a sub-micron fibrous membrane, the method comprising:
- forming a plurality of first sub-micron fibers aligned along a first horizontal direction by continuously electrospinning a polymer solution through a plurality of first electrospinning portions;
- forming a plurality of second sub-micron fibers in a random pattern by continuously electrospinning the polymer solution through a plurality of second electrospinning portions;
- and
- coating a carrier with a network of the plurality of first sub-micron fibers and the plurality of second sub-micron fibers by continuously passing the carrier through an area where the plurality of first sub-micron fibers and the plurality of second sub-micron fibers are formed, while the first electrospinning portions and the second electrospinning portions are continuously electrospinning the polymer solution.
1 more element
Dependencies are inferred from the claim text.