A METHOD AND APPARATUS FOR MANUFACTURE OF SMOKING ARTICLE FILTER ASSEMBLY INCLUDING ELECTROSTATICALLY CHARGED FIBERS,申请号WO2010EP06107-传众专利搜索

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.