Abstract: A cigarette filter inspection method of inspecting a solid flavor element to be disposed in a void between two filter plugs placed in outer filter wrapper, and the cigarette filter inspection method includes an illumination step of irradiating the void with illumination light, an imaging step of obtaining an inspection image of a region containing the void, a filler detection step of detecting the flavor element based on contrast between the void and the flavor element in the inspection image, and an inspection step of inspecting the flavor element detected in the inspection image.

Abstract: A smoking article filled with an appropriate amount of reconstituted tobacco is provided. A cylindrical heated tobacco product including a plurality of sections having diameters from 5.4 to 7.8 mm, includes: at least one filter section having a length ranging from 4 to 8 mm, inclusive; and at least one tobacco section having a length ranging from 8 to 18 mm, inclusive, wherein upon irradiation with microwaves having a frequency of 8 GHz, the microwaves having passed through the tobacco section exhibit a phase variation amount ranging from ?0.25 to 0.02 (rad).

Abstract: This filter for a tobacco product has: a fine-powder-containing article in which there is clumped a raw powder including a taste component and/or an aroma component, the fine-powder-containing article being formed into a powder by the application of force; a cavity in which the fine-powder-containing article is disposed; and a suction port filter part installed downstream of the cavity, the suction port filter part enabling communication between the cavity and an end of a suction port and having formed along the axial direction thereof a fine powder supply path for supplying fine powder from the cavity to the end of the suction port. The fine powder supply path includes a central connection part positioned at the center of a cross-section of the suction port filter part, and a plurality of hole parts extending in mutually different directions from the central connection part toward the outer periphery of the cross-section.

Abstract: A cigarette filter inspection method of inspecting a solid flavor element to be disposed in a void between two filter plugs placed in outer filter wrapper, and the cigarette filter inspection method includes an illumination step of irradiating the void with illumination light, an imaging step of obtaining an inspection image of a region containing the void, a filler detection step of detecting the flavor element based on contrast between the void and the flavor element in the inspection image, and an inspection step of inspecting the flavor element detected in the inspection image.

Abstract: The filter for cigarette product includes a mouthpiece end side-filter material and a front stage-filter material. The mouthpiece end side-filter material has a low air flow-resistance unit that is arranged in a part of a cross section from a front end surface to a rear end surface and having a relatively low air flow-resistance, and a high air flow-resistance unit that is arranged in the remainder of the cross section from the front end surface to the rear end surface and having a higher air flow-resistance than the low air flow-resistance unit. At least on the rear end surface of the mouthpiece end side-filter material, the low air flow-resistance unit is arranged only in one semicircular area, of two parts into which the cross section of the mouthpiece end side-filter material is divided.

Abstract: The filter for cigarette product includes a mouthpiece end side-filter material and a front stage-filter material. The mouthpiece end side-filter material has a low air flow-resistance unit that is arranged in a part of a cross section from a front end surface to a rear end surface and having a relatively low air flow-resistance, and a high air flow-resistance unit that is arranged in the remainder of the cross section from the front end surface to the rear end surface and having a higher air flow-resistance than the low air flow-resistance unit. At least on the rear end surface of the mouthpiece end side-filter material, the low air flow-resistance unit is arranged only in one semicircular area, of two parts into which the cross section of the mouthpiece end side-filter material is divided.