Abstract: A smoker's pipe has a plastics bowl (17) and stem (16) and, within the bowl, a ceramic liner (18) having a flange (19) which overlies the rim of the bowl, and is secured thereto by a resilient ring (29) of adhesive.

Abstract: A printing ink comprises a liquid vehicle, containing a binder, and a smoke-enhancing additive in the form of particles that are insoluble in the liquid vehicle and that have sizes in the range 5-80 microns, preferably at least 90% of the particles having sizes in the range 10-50 microns. The inks are printed onto the inner surface of a smoking rod wrapper in amounts such that the weight of dry deposits is in the range 20 to 60 mg per wrapper.

Abstract: A smoking rod wrapper material has porosity apertures which are partially or fully blocked by a coating of a heat-removable, porosity-reducing composition. The composition melts as the burning tip of the smoking rod approaches to increase the porosity of the wrapper.

Abstract: A cigarette rod wrapper is cut from a paper web which is preprinted on its outer surface firstly with brand legend (33) and longitudinally spaced registration markings (32), and then on its inner face with a profiled deposit (34) of an additive such as a nicotine component. The registration markings (32) are used both to ensure longitudinal registration of the printed deposit (34), and in the rod making machine to ensure that the tobacco rod is cut at the correct position. The registration marking (32) is covered in use by a tipping wrapper (43) which unites the tobacco rod with a filter element (42).