A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
A24D3/06—Use of materials for tobacco smoke filters