Testing systems and methods are provided for a smoking article to determine a characteristic of the smoking article, such as density of a material used therewith. The testing system may include a test fixture and an electromagnetic energy generating device The testing methods may be carried out by subjecting the material to the electromagnetic energy and determining the amount of energy absorbed by the material.

Testing systems and methods are provided for a smoking article to determine a characteristic of the smoking article, such as density of a material used therewith. The testing system may include a test fixture and an electromagnetic energy generating device The testing methods may be carried out by subjecting the material to the electromagnetic energy and determining the amount of energy absorbed by the material.

A method of determining the density of an elongate rod of material as it travels in a longitudinal direction through an inspection zone of apparatus for determining the density of an elongate rod of material is disclosed. The method comprises: positioning an X-ray generator of said apparatus to transmit X-rays in a direction across the elongate rod and towards a detector of said apparatus, as the elongate rod travels in a longitudinal direction through said inspection zone of said apparatus; supplying a voltage to the X-ray generator of between 20 to 80 kV to transmit the X-rays at a predetermined intensity; detecting the intensity of the X-rays transmitted through the elongate rod using the detector, and determining a density of the elongate rod based on a comparison of the predetermined and detected intensities. A method of manufacturing tobacco industry products that includes the above inspection method is also disclosed, together with apparatus for determining the density of an elongate rod of material.

Apparatus for analysing a rod-shaped smoking article is disclosed. The apparatus comprises a source (10) of x-ray radiation arranged to irradiate an area of the article (30), one or more area image sensors (12) arranged to detect x-ray radiation from an area of the article and to produce two-dimensional image data therefrom, and a drive mechanism arranged to move the smoking article (30) or the sensor (12) in an axial direction. A processing unit (20) is arranged to process two-dimensional image data produced by the area image sensor (12) at a plurality of different axial positions and to produce an output in dependence thereon. The processing unit may be arranged to output a two-dimensional image to be displayed and/or to output processed dimensional or quality information.

A method of determining the density of an elongate rod of material as it travels in a longitudinal direction through an inspection zone of apparatus for determining the density of an elongate rod of material is disclosed. The method comprises: positioning an X-ray generator of said apparatus to transmit X-rays in a direction across the elongate rod and towards a detector of said apparatus, as the elongate rod travels in a longitudinal direction through said inspection zone of said apparatus; supplying a voltage to the X-ray generator of between 20 to 80 kV to transmit the X-rays at a predetermined intensity; detecting the intensity of the X-rays transmitted through the elongate rod using the detector, and determining a density of the elongate rod based on a comparison of the predetermined and detected intensities. A method of manufacturing tobacco industry products that includes the above inspection method is also disclosed, together with apparatus for determining the density of an elongate rod of material.

Apparatus (1) for identification of physical parameters of rod-like articles (2) of the tobacco industry provided with a multi-path conveyor (3) of rod-like articles (2), fed with rod-like articles from a supplying device; a radiation source (17) arranged for emitting radiation (R) towards the paths (P) of the multi-path conveyor (3); a radiation sensor (18) arranged so that the it receives the radiation (R) from the radiation source (17), after the radiation (R) penetrated through the multi-path conveyor (3) of rod-like articles (2); whereas the radiation source (17) and the radiation sensor (18) are situated on opposite sides of a transferring plane (A); characterised in that the radiation sensor (18) is positioned transversely to the paths (P) of the conveyor (3), whereas the radiation sensor (18) is arranged so that it produces a signal (S) representing attenuation of the radiation (R) penetrating through the rod-like articles (2) on the paths (P) of the multi-path conveyor (3), situated between the radiation source (17) and the radiation sensor (18).