… of a tobacco plug, a hollow acetate tube, a polymer-film filter, a low-density cellulose acetate mouth-piece … 2021 Fig. 1 A Hollow Acetate Tube B Tobacco Plug C Polymer-Film Filter D Mouth Piece Filter E Mouth-End Paper F Outer …
… comprising (i) a transparent, external protective film of plastics to prevent leakage of the active substance … the moment of application; and (v) a removable protective film which keeps the system closed and intact until the time …