Fine hollow fibers having a high void fraction
US12377001B2 · kind B2 · utility
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60References
6Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 14, 2021 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Feb 13, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/51026
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A hollow fiber that extending along at least a portion of the fiber along a longitudinal axis thereof and is defined by an interior wall is provided. Through selective control over the manner in which it is formed, the present inventors have discovered that the hollow fiber can exhibit a unique combination of a high void fraction and small fiber size that makes it particularly suitable for use in certain applications, such as in nonwoven webs for absorbent articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.