Sheet filter materials with additives
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jan 31, 2013
app pub date -
Dec 21, 2010
filing date -
Dec 21, 2009
priority date (Note) -
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Abstract
The present invention relates to the inclusion of additives in a filter element comprising a non-woven sheet material or paper as the filter material to increase the selective removal of semi-volatile compounds and to improve the taste characteristics of the smoke drawn through the filter element. The increased selective removal of semi-volatile compounds from the smoke being drawn through the filter element is provided by polyethylene glycol. TEC and/or triacetin are additives which have been found to improve the taste characteristics of smoke drawn through the filter element.
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