| abstract |
A cigarette filter for removing nicotine and tar from cigarette smoke is composed a filtering core ( 20 ) enclosed between the tube ( 10 ) and a mouth piece ( 30 ). Multiple gaps and passages and a residue chamber ( 15 ) are individually formed between the filtering core ( 20 ) and the tube ( 10 ). Multiple inlets ( 24 ) are defined in the filtering core ( 20 ) to communicate with the tube ( 10 ), and multiple outlets ( 26 ) are defined in the filtering core ( 20 ) to communicate between the inlets ( 24 ) and the residue chamber ( 15 ). When cigarette smoke passes through the filter core ( 20 ), nicotine and tar are deposited inside the inlets ( 24 ), outlets ( 26 ) and the residue chamber ( 15 ) because they have a larger specific gravity than the other gas in the cigarette smoke. |