Electrospun polymeric nanofiber filter material and devices
US-2024278172-A1 · Aug 22, 2024 · US
Filter media and elements
US2016129381A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016129381-A1 |
| Application number | US-201414776447-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 5, 2014 |
| Priority date | Mar 15, 2013 |
| Publication date | May 12, 2016 |
| Grant date | — |
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- Title
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Abstract
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Fibrous filter medium that includes a melt-blown filter layer comprising melt-blown fibers and a high-efficiency glass-containing filter layer comprising glass fibers.
First claim
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1 - 31 . (canceled) 32 . An air filter medium comprising: a melt-blown filter layer comprising melt-blown fibers; and a high-efficiency glass-containing filter layer comprising glass fibers and multi-component binder fibers; and an optional support layer; wherein the layers are configured and arranged for placement in an air stream; further wherein the glass-containing layer comprises a hydrophobic coating. 33 . The filter medium of claim 32 , wherein the hydrophobic coating comprises a fluorochemical. 34 . The filter medium of claim 32 , wherein the melt-blown filter layer is the most upstream layer. 35 . The filter medium of claim 32 , wherein the glass-containing filter layer is positioned between the melt-blown filter layer and the support layer. 36 . The filter medium of claim 32 , wherein the multi-component binder fibers of the glass-containing filter layer comprise bicomponent fibers having a low melting point polyester sheath and a higher melting point polyester core. 37 . The filter medium of claim 32 , wherein the melt-blown filter layer is electrostatically charged. 38 . The filter medium of claim 32 comprising a support layer, wherein the support layer is a spunbond layer. 39 . The filter medium of claim 32 , wherein the filter medium displays a hydrostatic head of at least 10 inches (25.4 cm) of water. 40 . The filter medium of claim 32 , wherein two or more layers are laminated together. 41 . An air filter medium comprising: a melt-blown filter layer comprising melt-blown fibers; and a high-efficiency glass-containing filter layer comprising glass fibers and multi-component binder fibers; and a support layer; wherein the melt-blown filter layer is the most upstream layer and the glass-containing layer is positioned between the melt-blown layer and the support layer. 42 . The filter medium of claim 41 , wherein the glass-containing layer comprises a hydrophobic coating. 43 . The filter medium of claim 42 , wherein the hydrophobic coating comprises a fluorochemical. 44 . The filter medium of claim 41 , wherein two or more layers are laminated together. 45 . The air filter medium of claim 41 , wherein the multi-component binder fibers of the glass-containing filter layer comprise bicomponent fibers having a low melting point polyester sheath and a higher melting point polyester core. 46 . The filter medium of claim 41 , wherein the melt-blown filter layer is electrostatically charged. 47 . The filter medium of claim 41 , wherein the support layer is a spunbond layer. 48 . A filtration system for a gas turbine or compressor air intake; the system comprising: a hood arrangement; a louver arrangement, downstream of the hood arrangement; a coalescer arrangement, downstream of the louver arrangement; and a final stage including an arrangement of water tight filters downstream of the coalescer arrangement; wherein the system is free of water removal stages downstream of the final stage 49 . The system of claim 48 , wherein the coalescer arrangement includes a plurality of panel filter elements. 50 . The system of claim 48 , wherein the water tight filters are pleated. 51 . The system of claim 48 , wherein the water tight filters are panel filers.
Assignees
Inventors
Classifications
Rendering the filter material hydrophobic · CPC title
The layers being joined by gluing · CPC title
Fibre diameter · CPC title
Support layers · CPC title
using folded, pleated material · CPC title
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- What does patent US2016129381A1 cover?
- Fibrous filter medium that includes a melt-blown filter layer comprising melt-blown fibers and a high-efficiency glass-containing filter layer comprising glass fibers.
- Who is the assignee on this patent?
- Donaldson Co Inc
- What technology area does this patent fall under?
- Primary CPC classification B01D39/1623. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).