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| Number | Title | Issue Date |
| 7547271 | Filter rod making machine A filter rod making machine comprises a tow treatment section (10) for forming a filter web (WF) from fibrous tow (T), a scatter device (42) for scattering activated carbon grains (PC) evenly over the filter web (WF) fe... | 06/16/2009 |
| 7338421 | Method and a device for making filters for tobacco products Filters for tobacco products are manufactured by a device comprising a conveyor drum rotatable about a horizontal axis and furnished with peripheral grooves, each holding a leaf of paper material preassembled with a first filter element. The single groove is flanked... | 03/04/2008 |
| 7074170 | Method and apparatus for making cigarette filters with a centrally located flavored element A filter making apparatus includes a positioning device having a passageway therethrough, with the passageway guiding a continuous flavor element such as a continuous strand of textile material from an inlet of the passageway to an outlet of the passageway. A liquid... | 07/11/2006 |
| 7004896 | Method and arrangement for producing compound filters A method and arrangement are provided for producing compound filters for products in the tobacco-processing industry. A filter tube, having a filter element in a central region of the filter tube, is supplied to a predetermined position. Predetermined portions of fi... | 02/28/2006 |
| 6918867 | Production of filter elements not suitable for cutting A method and apparatus for producing multi-segment filter elements in the tobacco-processing industry. The multi-segment filter elements each include a first filter segment and at least one second filter segment. A sleeve element is arranged in the first filter segm... | 07/19/2005 |
| 6907885 | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highl... | 06/21/2005 |
| 6908421 | Filter manufacturing machine A filter-manufacturing machine comprises spray nozzles located on both sides of a feeding path of sheet material made of filter fibers, respectively, and the spray nozzles each have a line of spray holes of a liquid binder with high viscosity and a plurality of air ... | 06/21/2005 |
| 6783617 | Method of densifying streams of filter material for tobacco smoke A filter rod making machine wherein successive increments of a stream constituting a converted tow of filamentary filter material for tobacco smoke are contacted by a compressing tool which is vibrated at a frequency and/or amplitude sufficient to prevent over-heati... | 08/31/2004 |
| 6723033 | Method and apparatus for producing particle bearing filter rod A method and apparatus for delivering predetermined amounts of particulate material and/or plasticizer to a location remote from the particulate material, and a cigarette filter and a cigarette made according to the method and apparatus. ... | 04/20/2004 |
| 6656412 | Compaction system for particles in particle filled cavities of an article A method and apparatus for compacting particles or granules in discrete cavities spaced along an article or articles such as a cigarette filter rod moved underneath the compacting system. The compacting system can be provided with spaced lugs or other pro... | 12/02/2003 |
| 6537186 | Process and apparatus for high-speed filling of composite cigarette filters A process of manufacturing composite filter stock is provided that includes several steps. In a first step, a paper carrier strip feeds along a conveyor. Along one edge of the carrier strip, the paper is folded back against itself. Fibrous filter segments... | 03/25/2003 |
| 6336896 | Automatic filter tip attaching machine An automatic filter tip attaching machine includes a mechanical structure moved by a computer program to automatically attach three filter tip stages a, b, c to cigarettes, with a chemical powder filled in the filter tip b to absorb nicotine and tar compl... | 01/08/2002 |
| 6062228 | Biodegradable filter material and method for its manufacture There is provided a biodegradable filter tow or filter material from renewable raw materials for the use as a tobacco smoke filter element of cigarettes, cigars or pipes as well as a method for preparing it, wherein fibers, films or foams prepared in an e... | 05/16/2000 |
| 5911224 | Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same A porous element particularly for use as a tobacco smoke filter plug in association with a cigarette or the like wherein the matrix comprises a multiplicity of biodegradable polyvinyl alcohol fibers bonded together at their points of contact to define a t... | 06/15/1999 |
| 5725467 | Method of and apparatus for making a tow of filter material for tobacco smoke The treatment of a tow of filamentary filter material for tobacco smoke prior to draping of the resulting filler into a web of wrapping material is followed by advancement of the filler in a plane and single or multiple deflection of successive increments... | 03/10/1998 |
| 5664586 | Tobacco smoke filters and filter rods therefor The invention provides a cigarette filter (1) the biodegradation of the material (3) which is assisted by the incorporation of swellable means in the filter so that upon exposure to moisture the volume of the filter is increased, preferably to the extent ... | 09/09/1997 |
| 5497793 | Cigarette and soluble cigarette filter therefor A filter cigarette includes a tobacco smoke filter having a core of an expanded starch material which is biodegradable and readily soluble in water. The filter material is preferably formed of high amylose content cornstarch or potato starch extruded at a... | 03/12/1996 |
| 5163452 | Rod making apparatus for use in the manufacture of smoking articles Rods for use in the manufacture of smoking products are provided using a rod-making apparatus. The apparatus includes (a) an unwind unit for continuously supplying a material having a continuous integrity; (b) a rod-forming unit for forming a rod-like com... | 11/17/1992 |
| 5104367 | Pinned rollers and process for manufacturing fibrillated film A roller for use in fibrillating oriented films of polyolefin materials having a plurality of pins projecting from the surface of the roller. The pins are distributed in a plurality of rows spaced around the roller surface. The rows each contain about 25 ... | 04/14/1992 |
| 5063945 | Tobacco filter stock A tobacco filter stock capable of being molded into a filter only be entanglement of filaments with one another without any adhesion means, whereby the resulting filter has a suitable hardness and a superior whiteness. A tobacco filter and a production pr... | 11/12/1991 |
| 5012829 | Flavored cigarette filters, and methods and apparatus for making same A cigarette filter has a substantially cylindrical inner member of filter material surrounded by an outer member of filter material and a plugwrap. The density of the inner and outer members are typically different, and a flavorant is added to at least on... | 05/07/1991 |
| 4917660 | Apparatus for producing cylindrical filters Tows of fibers are wrapped around a mandrel or a central fiber core to form a cylindrical filter. At least one belt is located in position to make essentially linear contact with the cylindrical filter, and the at least one belt is driven so as to draw th... | 04/17/1990 |
| 4911684 | Smoking article mouthpieces A method of making a ventilated cigarette filter plug in which a bore is thermally formed, by a laser beam for example, in a rod comprising a duct extending coaxially of the rod and matrix material surrounding the duct. The thermally formed bore extends t... | 03/27/1990 |
| 4807809 | Rod making apparatus for smoking article manufacture Rods for use in the manufacture of smoking products are provided using a rod making apparatus equipped with a web preforming unit. A web of sheet-like material is passed through the web preforming unit and is pleated to form a rod-like composite. The rod-... | 02/28/1989 |
| 4798570 | Process for preparing filter rods An improved process for preparing fiber rods useful as cigarette filter tips comprises feeding a synthetic fiber tow through an air jet bulker directly into the garniture of a conventional cigarette filter making apparatus. The process allows production o... | 01/17/1989 |
| 4791943 | Cigarette filter unit and method for the production thereof In order, when a cigarette is being smoked, to reduce, or even reverse, the tendency of the condensate-content to increase, a cigarette filter unit is proposed in which at least one partition having at least two areas of different porosities and made of a... | 12/20/1988 |
| 4784632 | Tobacco smoke filter and method and apparatus for making same A method and means for making an improved tobacco smoke filter is characterized by the production of longitudinally continuous grooves running from end-to-end in the peripheral surface of a smoke-impervious filter plug wrap with the grooves having a trans... | 11/15/1988 |
| 4752348 | Localized liquid additive applicator system for continuous cylindrical product A continuous rod of a product such as a cigarette filter material is coated with a treating liquid by being passed axially through a cylindrical applicator zone comprising a permeable cylindrical wall, the cylindrical wall being concentrically enclosed wi... | 06/21/1988 |
| 4723561 | Smoking articles A cigarette comprises a tobacco rod and a filter element of porous filtration material having an air permeable surface and equiangularly spaced lengthwise extending peripheral ventilation grooves. The element and the rod are interattached by a first air-i... | 02/09/1988 |
| 4721119 | Rod making machine with means for adjusting the position of wrapping material A cigarette rod making machine wherein a garniture tape transports a web of cigarette paper and a stream of tobacco particles through a wrapping mechanism has a device which monitors the position of the tape in the wrapping mechanism and adjusts a pulley ... | 01/26/1988 |
| 4718435 | Smoking articles There is disclosed a method of operating on a cigarette, which comprises a tobacco rod and a filter element interattached by a thermoplastic tipping wrapper, to allow for the ingress of ventilation air. The filter element also comprises ventilation duct(s... | 01/12/1988 |
| 4699606 | Apparatus for detecting and/or controlling tension of a moving web, for example, a filamentary tow utilized in the production of cigarette filters Apparatus for detecting and/or controlling tension of a moving web, for example, a filamentary tow, in a preselected zone of a longitudinal path traversed by the moving web. A sensing roller is journally supported by roller support structure, the latter h... | 10/13/1987 |
| 4697602 | Motor driven bulk material roll and wrapping machine A machine for rolling bulk material, such as fiber filters and tobacco, and wrapping a sheet member around the bulk material has a flexible apron connected to a roller bar which is rotated with an electric motor. The apron is located over a convex support... | 10/06/1987 |
| 4676769 | Method and apparatus for regulating the resistance of filter rod sections to the flow of gases therethrough The pressure of compressed air in one or more nozzles which convert successive increments of a running tow of filamentary filter material into a rodlike filler in a filter rod making machine is regulated in response to variations in the speed of the fille... | 06/30/1987 |
| 4661090 | Filter rod manufacture In the production of cigarette filter rod from filter tow the conveyance of tow into a tow shaping unit (12, 32, 56, 76) is aided by controlling tow tension so that excessive stretch (and hence possible loss of crimp) is avoided. The tension is controlled... | 04/28/1987 |
| 4655736 | Method of manufacturing a tobacco smoke filter A method of manufacturing tobacco smoke filter of filamentous material with at least one end thereof having a preselected fused area embedded in and over at least a portion of the cross-sectional area thereof having a preselected fused area extending over... | 04/07/1987 |
| 4648858 | Apparatus for manufacturing a cigarette filter tow An apparatus for manufacturing a filter rod having a hollow tube extending longitudinally through the filter rod. The apparatus includes a supply reel of hollow tubing, a supply of filter material web, and a garniture funnel into which the filter material... | 03/10/1987 |
| 4636183 | Apparatus for making grooves in cigarette filters An apparatus for, in one advantageous embodiment, concurrently forming a plurality of generally longitudinally extending grooves in a filter rod, and in another advantageous embodiment, for making small apertures in the grooves as the grooves are being fo... | 01/13/1987 |
| 4636182 | Filter manufacturing method for the production of pre-filters to remove harmful substances in cigarette smoke by use of pine needles A process of manufacturing a pre-filter for the filteration of harmful substances in cigarettes by using pine needles which have been steamed to eliminate the odor of the pine resin. The steamed pine needles then are dried in a shaded lot and formed into ... | 01/13/1987 |
| 4631045 | Apparatus for producing a rod-like smoking article with secondary air channels A rod-like smoking article with a rod-like mouthpiece core at the mouth end of a tobacco rod, the entire periphery of said mouthpiece core being enveloped by an adhered wrapping paper which is suitable for contact with the lips and which overlappingly fol... | 12/23/1986 |
