Disintegratable cigarette filter
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United States of America Patent
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Aug 17, 2004
Grant Date -
N/A
app pub date -
Apr 17, 2002
filing date -
Oct 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a high performance cigarette filter on the basis of cellulose ester fibers or filaments which can be mechanically disintegrated. The inventive high-performance cigarette filter is characterized in that a) the fiber weight (or filament weight)/draw resistance ratio S based on the filament titer is greater than approximately 0.7, the S value being calculated according to the formula S=(m.sub.A /.DELTA.P.sub.7.8 /dpf[10 m/daPA], wherein m.sub.A refers to the fiber weight, .DELTA.P refers to the draw resistance and dpf represents the filament titer and for the draw resistance the value calculated for a diameter of 7.8 mm is inserted, b) the residual crimping value of the filter material does not exceed the value 1.45, c) the fiber weight amounts to maximally 10 mg/mm of the filter length, and d) the hardness of the cigarette filter is higher than approximately 90% filtrona hardness. The inventive filter is characterized by an improved disintegratability under environmental conditions vis-a-vis comparable products.
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