The method and apparatus for producing tobacco smoke filters. The present invention relates to a composition useful for treating the substrate of a tobacco smoke filter. A tobacco smoke filter comprising one or more of a free porphyrin or one or more of a free metal phthalocyanine. A seamless tobacco smoke filter (80, 90) comprising a first segment and a second segment. A device (110) for producing a tobacco smoke filter substrate tobacco smoke filter comprising a rod producing machine (112) and an applicator (120) for intermittently applying one or more of an additive to the substrate in question. a plurality of spaced bands.
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