Cigarette and soluble cigarette filter therefor
OwnerStephen A. Kubicainventor
Life of this patent
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Abstract
A filter cigarette includes a tobacco smoke filter having a core of an expanded starch material which is biodegradable and readily soluble in water. The filter material is preferably formed of high amylose content cornstarch or potato starch extruded at a moisture content of between 10% and 21% at a temperature between 150.degree. to 250.degree. C.
Claims7
A cigarette comprising an outer paper wrapping forming an elongated tube having a forward portion and a rearward portion, the forward portion of the tube containing smokable tobacco, and the rearward portion of the tube containing a filter, the filter consisting essentially of a porous body formed of a readily water soluble, expanded organic starch material of corn or potato.
A cigarette comprising an outer paper wrapping forming an elongated tube having a forward portion and a rearward portion, the forward portion of the tube containing smokable tobacco, and the rearward portion of the tube containing a filter, the filter consisting essentially of a porous body formed of a readily water soluble expanded organic starch material and a portion of the paper surrounds the filter and is thinner than a portion of the paper which surrounds the tobacco.
A cigarette comprising an outer paper wrapping forming an elongated tube having a forward portion and a rearward portion, the forward portion of the tube containing smokable tobacco, and the rearward portion of the tube containing a filter, the filter comprising a readily water soluble, expanded organic corn or potato starch having an amylose content of at least 40% by weight and can be formed by extruding the starch in the presence of a moisture content of 21% or less by weight at a temperature from about 150.degree. to 250.degree. C.
Dependencies are inferred from the claim text.