Continuous process for retaining solid adsorbent particles on shaped micro-cavity fibers
US6919105B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | May 25, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0225
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A process of retaining fine adsorbent particles such as carbon material or APS silica gel in the micro-cavities of a shaped fiber comprises the steps of continuously conveying a shaped fiber with micro-cavities to a charging arrangement where the fiber is electrostatically charged. The electrostatically charged fiber is then drawn through a reservoir of the fine adsorbent particles. As the fiber passes through the reservoir the fine particles adhere to the fiber and the micro-cavities thereof. Any excess particles are removed from the fiber outside the reservoir. Subsequently the shaped fiber loaded with fine adsorbent particles is collected for use in filter applications of one type or another such as cigarette filters, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.