Cigarette filter, process for producing the same, and cigarette
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United States of America Patent
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Dec 8, 2015
Grant Date -
May 3, 2012
app pub date -
Oct 25, 2011
filing date -
Nov 1, 2010
priority date (Note) -
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Abstract
A cigarette filter comprises a cellulose ester tow and a cellulose acetate particle dispersed in the cellulose ester tow, and the cellulose acetate particle has the following particle size: not less than 90% by weight of the cellulose acetate particle pass through a sieve having an aperture size of 1.7 mm and fail to pass through a sieve having an aperture size of 0.10 mm, and these sieves are in accordance with JIS Z8801-1 2006.
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