Coated impregnated porous filter plug

Patent Number: 9386801

Patent Date: 2016-07-12

Patent type: utility

A process for producing a coated filter plug for a smoking article including: (a) incorporating an additive to a porous filter plug, thereby obtaining an impregnated filter plug; (b) coating a surface of the impregnated filter plug with a cross-linkable polymer material; and (c) cross-linking the cross-linkable polymer material, to form a cross-linked, breakable coating substantially enclosing the impregnated filter plug. The process may further include at least partially coating the impregnated filter plug with a cross-linking agent prior to, or subsequent to, coating with the cross-linkable polymer material.

Inventors

First Name Last Name City State Country
Shuzhong Zhuang - - -
Georgios D. Karles - - -
Daqing Wu - - -
Yi Zeng - - -
Hongwei Liu - - -

IPCs

Section Class Sub Class Group Sub Group
A 24 D 3 16
A 24 D 3 06
A 24 B 15 28
A 24 D 3 02
A 24 D 3 04

Assignee

Organization First Name Last Name City State Country
Philip Morris Incorporated - - - - -