Filter assembly, method for manufacturing same, and filter module comprising same
US-11511235-B2 · Nov 29, 2022 · US
Filter reinforcing material and filter medium for deodorizing filter comprising same
US12023618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12023618-B2 |
| Application number | US-201916978858-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 5, 2019 |
| Priority date | Mar 12, 2018 |
| Publication date | Jul 2, 2024 |
| Grant date | Jul 2, 2024 |
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- Title
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Abstract
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A filter reinforcing material is disclosed that does not cause peeling or pleat adhesion at the time of pleating, is excellent in pleating, and has high stiffness. A filter reinforcing material includes a bonding layer comprising a thermal bonded nonwoven including thermal bondable short fibers, and a reinforcing layer comprising a nonwoven including high-melting fibers having a higher melting point than a melting point of the thermal bondable short fibers having the lowest melting point in the bonding layer by 30° C. or more. Further, the bonding layer preferably comprises two or more kinds of thermal bondable short fibers with a fineness difference of more than or equal to 5 dtex.
First claim
Opening claim text (preview).
The invention claimed is: 1. A filter reinforcing material comprising, a bonding layer comprising a thermal bonded nonwoven including thermal bondable short fibers, and a reinforcing layer comprising a nonwoven including high-melting fibers having a higher melting point than a melting point of thermal bondable short fibers having the lowest melting point in the bonding layer by 30° C. or more, wherein Metsuke of the filter reinforcing material is 40 to 120 g/m 2 , and the high-melting fibers comprise at least one selected from the group of (a) thermal bondable short fibers having a fineness of 1.0 to 40 dtex and a higher melting point than a melting point of the thermal bondable short fibers having the lowest melting point in the bonding layer by 30° C. or more and (b) non-bondable fibers having a fineness of 1.0 to 40 dtex and a higher melting point than a melting point of the thermal bondable short fibers having the lowest melting point in the bonding layer by 30° C. or more. 2. The filter reinforcing material according to claim 1 , wherein the bonding layer comprises two or more kinds of thermal bondable short fibers with a fineness difference of more than or equal to 5 dtex. 3. The filter reinforcing material according to claim 1 , wherein the reinforcing layer comprises the high-melting fibers by more than or equal to 60 weight % out of 100 weight % of fibers contained in the reinforcing layer. 4. The filter reinforcing material according to claim 1 , wherein, melting point of the thermal bondable short fibers in the bonding layer is 80 to 150° C., and content of the thermal bondable short fibers in the bonding layer with a melting point of 80 to 150° C. is 60 to 100 weight % out of 100 weight % of fibers contained in the bonding layer. 5. The filter reinforcing material according to claim 1 , wherein average fineness of fibers contained in the reinforcing layer is larger than average fineness of fibers contained in the bonding layer. 6. The filter reinforcing material according to claim 1 , wherein the bonding layer and the reinforcing layer are integrated by thermal fusion bonding. 7. The filter reinforcing material according to claim 1 , wherein the thermal bondable short fibers in the bonding layer are composite fibers with core-sheath structure, eccentric structure, or side-by-side structure. 8. A filter medium for deodorizing filter comprising, the filter reinforcing material according to claim 1 , an adsorbent layer comprising adsorbents laminated on the side of the bonding layer of the filter reinforcing material, and a base material laminated to sandwich the adsorbent layer with the filter reinforcing material.
Assignees
Inventors
Classifications
Filters · CPC title
polypropylene · CPC title
the fibres being within layered webs · CPC title
Odour absorbent · CPC title
Carbon, e.g. graphite particles · CPC title
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Frequently asked questions
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- What does patent US12023618B2 cover?
- A filter reinforcing material is disclosed that does not cause peeling or pleat adhesion at the time of pleating, is excellent in pleating, and has high stiffness. A filter reinforcing material includes a bonding layer comprising a thermal bonded nonwoven including thermal bondable short fibers, and a reinforcing layer comprising a nonwoven including high-melting fibers having a higher melting …
- Who is the assignee on this patent?
- Kureha Seni Kk, Toyo Boseki
- What technology area does this patent fall under?
- Primary CPC classification A61L9/014. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 02 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).