FIELD: smoking accessories.
SUBSTANCE: invention relates to a tobacco smoke filter or a filter element that comprises a stiff outer wrapper, engaged around a downstream thermoformed core of tobacco smoke filtering material and an additional core longitudinally aligned with said thermoformed core, the downstream thermoformed core having a profiled outer surface which defines with the stiff outer wrapper at least one longitudinally extending channel which extends the entire length of the downstream core.
EFFECT: technical result is preventing the crushing of the ventilated outer wrapper and its pressing into the grooves.
27 cl, 2 dwg
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