Filtration media fiber structure and method of making same
First Claim
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1. A fiber structure, having an upstream side and a downstream side, comprising:
- a plurality of micron-sized fibers, each micron-sized fiber comprising a body having a diameter of at least one micron; and
a plurality of discrete length nano-fibers having at least a first portion and a second portion, the first portion of the plurality of discrete length nano-fibers attached to respective ones of the bodies of the plurality of micron-sized fibers, wherein the first portion of the plurality of discrete length nano-fibers further entangle upon themselves to form a plurality of micro-volumes, and wherein the second portion of the plurality of discrete length nano-fibers entangle with the first portion of the plurality of discrete length nano-fibers and upon themselves.
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Abstract
Fiber structures and methods are described that incorporate a body of a micron fiber modified by the attachment of discrete length nano-fibers. Numerous of these modified fiber structures can be assembled into air filter media. Further augmentations of the modified fibers and media can be implemented to improve filtration characteristics.
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18 Claims
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1. A fiber structure, having an upstream side and a downstream side, comprising:
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a plurality of micron-sized fibers, each micron-sized fiber comprising a body having a diameter of at least one micron; and a plurality of discrete length nano-fibers having at least a first portion and a second portion, the first portion of the plurality of discrete length nano-fibers attached to respective ones of the bodies of the plurality of micron-sized fibers, wherein the first portion of the plurality of discrete length nano-fibers further entangle upon themselves to form a plurality of micro-volumes, and wherein the second portion of the plurality of discrete length nano-fibers entangle with the first portion of the plurality of discrete length nano-fibers and upon themselves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A filter media structure, comprising:
a plurality of filter layers, at least one layer of the plurality of filter layers including; a plurality of micron-sized fibers, each micron-size fiber comprising a body having a diameter of at least one micron, respective ones of the plurality of micron-sized fibers defining at least one pore between the micron-sized fibers; and a plurality of discrete length nano-fibers attached to respective ones of the bodies of the micron-sized fibers and extending outwardly from the micron-sized fibers into the at least one pore formed between the micron-size fibers, wherein each layer of the plurality of layers includes a differing size of discrete length nano-fibers than respective ones of the plurality of layers. - View Dependent Claims (15, 16, 17, 18)
Specification