Abstract: Filter-tipped cigarettes, cigars and similar smoking products which employ self-supporting non-wrapped fibrous filters are disclosed wherein the tobacco-containing portions are attached to the fibrous filters by tipping paper that is coated in a specified manner with a hot-melt adhesive.

Abstract: A composite structure for use on a smoking product including a non-porous tipping paper coated with a heat-activatable adhesive in a selected pattern, having areas void of adhesive and microscopic openings through the tipping paper within the void areas. The method of manufacturing the composite structure includes applying a non-conductive, heat-activatable adhesive coating on the paper web in a specific pattern having void and adhesive coated areas and forming perforations in the void areas of the paper web.

Abstract: A tobacco smoke filter is disclosed, which provides tobacco flavor enrichment of smoke passing therethrough. The filter comprises a reconstituted tobacco member formed from a coherent sheet of reconstituted tobacco which has been uniformly embossed with a series of parallel grooves, and then compacted and bonded into a self-sustaining dimensionally stable axially elongated body whose longitudinal axis extends parallel to the embossed grooves. The embossed grooves provide the reconstituted tobacco member with flow passages having a high surface area for contact with smoke passing therethrough, so as to enable the smoke to become tobacco flavor-enriched by extracing tobacco flavor from the reconstituted tobacco.

Abstract: Arrangement for effecting the superfine perforation of film-like sheeting with the aid of high-voltage pulses. The sheeting to be perforated is permitted to pass in a contactless manner between two areal electrode fields. The electrode fields consist of a multitude of needles which are aligned to one another in a mirror-inverted manner and arranged in rows, with each time pairs of them forming discharge or sparking gaps. The needles of the first electrode field are in a direct conductive connection with each time one high-ohmic resistor. Each needle pair is arranged within the secondary circuit of an ignition transformer. These transformers have a high transformation ratio. On the primary side, the transformers are connected via transistor switches, to a source of low d.c. voltage. The transistor switches are initiated groupwisely via a distributor (ring counter) which, in turn, is controlled by a clock-pulse generator.

Abstract: A tobacco smoke filter having at least one directly ventilated cavity which provides for the formation, over a region of the filter extending inwardly of its peripheral region, of a mixture of at least the major proportion of the smoke and at least a major proportion of the ventilating air entering the said cavity or cavities. The extensive and uniform mixing of smoke and ventilation air gives a satisfying smoke with a low tar count and high nicotine/tar ratio, and can be obtained with the invention due to appropriate shaping of the cavity, or asymmetric positioning of the air ventilating vents, or by means of a flow-disturbing insert mounted in the filter, or a combination of two or more of these factors. Preferably a major part of the smoke is constrained to enter the cavity at an upstream peripheral extremity thereof and air vents are also concentrated at this extremity.