A METHOD AND APPARATUS FOR MANUFACTURE OF SMOKING ARTICLE FILTER ASSEMBLY INCLUDING ELECTROSTATICALLY CHARGED FIBERS
- 申请公布号：
- WO2011042174(A3)
- 申请号：
- WO2010EP06107
- 申请日期：
- 2010.10.06
- 申请公布日期：
- 2011.06.30
- 申请人：
- PHILIP MORRIS PRODUCTS S.A.
- 发明人：
- YANG, SZU-SUNG;XUE, LIXIN L.;CHANG, JING C.
- 分类号：
- A24D3/02;A24D3/04
- 主分类号：
- A24D3/02
- 摘要：
- Provided are a method and apparatus for making a cigarette filter assembly 10 for potentially reducing particle breakthrough. The method includes forming a lofty porous network of charge retaining polymer fibers 14 by mechanical, chemical or thermal bonding of the fibers, wrapping the lofty porous network in a cylindrical or tubular shape with optional mediating filter fibers 32 in a filter paper to form a filter plug while maintaining the lofty structure. The charge retaining fibers can be charged to attract and hold particles from such sources as particulate matter from sorbents (preventing break-through), and smoke constituents while having a suitable pressure drop. The apparatus handles the lofty media with minimal crushing, for example, by spacing apart delivery rolls equipped with protrusions to punch, push, and/or pull the lofty media ahead for high speed operation.
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