Multi-layer, biodegradable composites for air filtration
US12109520B2 · kind B2 · utility
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28References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 17, 2020 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Aug 8, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2505/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates to multi-layer composite articles including at least two nonwoven web layers. Each or the layers may be a spunbonded web, and each may include biodegradable materials. The multi-layered composites of the present disclosure are particularly well suited for air filtration, as they can combine a high dust holding capacity with sufficient strength, dimensional stability, and a relatively low pressure drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.