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Production manufacture filter cigarettes

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cigarette filters - Import export

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The present application is a continuation of application Ser. This application claims the benefit of U. The present invention relates to filter-tipped smoking articles such as filtered cigarettes, and in particular, to cigarette filters containing a carbon material.

Filter-tipped smoking articles, particularly cigarettes, generally comprise a tobacco rod, a filter and a band of tipping paper attaching the filter to tobacco rod.

The tobacco rod generally comprises a column of shredded tobacco e. Ventilation of mainstream smoke is achieved by provision of a row or rows of perforations through the tipping paper at a location along the filter plug. Ventilation provides dilution of drawn mainstream smoke with ambient air to reduce the delivery level of tar per puff.

During smoking, a smoker draws mainstream smoke from the coal at the lit end of the cigarette. The drawn cigarette smoke first enters the upstream filter portion of the filter and then passes through the downstream portion adjacent to the buccal end of the cigarette filter.

Certain cigarettes have filter segments which incorporate materials such as granules of carbon, silica gel, zeolite and the like. Exemplary cigarettes and filters are described in U. Certain commercially available filters have particles or granules of carbon e. See also, Clarke et al. Detailed discussion of the properties and composition of cigarettes and filters is found in U.

Examples of concentric filter layouts that include granular carbon are disclosed in European Patent Application No. The plug-space-plug design typically comprises a pair of spaced-apart filter plugs and a bed of granulated, activated carbon in the cavity or space therebetween. In their manufacture, a procession of spaced-apart filter plugs is established along a continuous ribbon of plug wrap. The plug wrap is then partially folded about a portion of the plug precession and granulated carbon material is poured or otherwise introduced into the spaces defined between the partially enwrapped filter plugs.

The plug wrap is then glued and closed, and the resultant continuous rod is then cut in well-defined locations according to a desired length, usually in the form of multiples of the filter element actually utilized on the filter-tipped cigarette itself. Cavity filling apparatus known in the art may be utilized in the manufacture of filter components such as shown in FIGS. With machines and carbon materials of the prior art, process control usually suffered at high machine speeds from inconsistent metering, scattering and pulverization of the granular material.

Consistency amongst filter rods would suffer, and some cavities would be less filled than others. Such an arrangement created a pulverizing action upon the granular carbon, which action generally increased with machine speed.

Granulated carbon, being a collection of irregularly shaped and variously sized particles, tends to pack into a given volume of space inconsistently from one filling operation to the next.

Accordingly, heretofore incomplete and inconsistent filling of cavities would plague automated filter rod making. The irregular packing would also create undesirable channels through the bed that would allow passage of substantial portions of mainstream smoke through or around the bed such that interaction between the mainstream smoke and the granular carbon would be lessened.

It has been known to include granulated, activated carbon materials in cigarette filters to promote removal of constituents from mainstream smoke. However, such granulated, activated carbon materials have surface roughness and shapes which are irregular and inconsistent from granule to granule. These irregularities and inconsistencies of granulated carbon materials create problems in the commercial production of carbon-bearing cigarette filter rods and cigarettes.

For example, the irregular shapes exacerbate ricochet of the particles as they are fed through filter rod making machines, which event dirties the product with errant carbon particles, puts dust into the work environment and creates a need for a shut-down to clean the rod making machine and leads to inconsistent and less complete filling of the cavities in the plug-space-plug filter rods.

Granulated, activated carbon materials also are known to have a significant impact on the taste of a cigarette, in that their randomly broad range of pore size distribution tends to capture not only gas phase components of a mainstream tobacco smoke, but also portions of the particulate phase, i. Granular activated carbons that are constructed from nut shells or wood are also known to include impurities, which are believed to be another possible cause of off-tastes attributed to the use of granulated carbon in cigarettes.

It is also understood that the process of activating granular carbon tends to weaken the granule body, such that it is less robust and more prone to fracture, pulverization and dusting when fed through metering devices of filter rod making machines. It is also understood that the activation treatment adds cost to the manufacture of granulated material. Accordingly, an object of the present invention is to provide a cigarette having a cigarette filter incorporating a form of carbon capable of efficiently and effectively adsorbing gas phase components present in mainstream cigarette tobacco smoke with a lesser impact on the perceived taste of the cigarette when smoked.

Yet another object of the present invention is to improve automated production of carbon-bearing filter rods. Yet another object of the present invention is to promote a more complete and consistent filling of cavities in plug-space-plug filter manufacturing. Still another object of the present invention is to obviate lessen material scatter and ricochet in the manufacture of filter plugs so as to lessen the occurrence of smeared product or dusting and the need to clean filter rod making machinery.

These and other objects are achieved with the present invention in which a filter of a smoking article is constructed of activated carbon beads of consistent spherical form and preferably of a pre-selected diameter, range of pore size distribution and activity level.

With the present invention, there is achieved a carbon-bearing cigarette filter that offers uniformity of product formation, uniformity of product performance, ease of achieving uniformity for both of these, and improved absolute performance. In a preferred embodiment, there is provided a plug-space-plug filter whose cavity is filled with beaded carbon of a consistent spherical shape and preferably of about the same size, preferably in the range of 0.

Accordingly, the robustness or hardness of the carbon beads is preserved so as to enhance their resistance to fracture and formation of undesirable dust during automated manufacture of filter rods. Maintaining bead size at or about a preselected diameter promotes a smoother flow and more consistent packing of the beads during manufacturing processes. Activated beaded carbon is found to have a preponderance greatest portion of its pore size distribution in the micropore range less than 20 angstroms , which is believed to be optimal for the removal of gas phase constituents.

It has also been found that activated beaded carbon particularly pitch-based beaded carbon has a smaller population of macropores greater than angstroms compared to wood or coconut based granular activated carbons.

Preferably, the beaded carbon is manufactured to have a pore size distribution predominantly in the range of micropores or small mesopores 50 angstrom diameter or less , with much fewer of the pores in the range of macropores angstroms or greater , with the remainder of the pores lying within the range defined therebetween.

Beaded carbon may also be adapted to carry flavorants in a manner such that they are releasable to mainstream smoke. Novel features and advantages of the present invention in addition to those mentioned above will become apparent to persons of ordinary skill in the art from a reading of the following detailed description in conjunction with the accompanying drawings wherein similar referenced characters refer to similar parts and in which:.

Referring to FIG. The filter 14 is in the form of a plug-space-plug design with spaced apart cellulose acetate plugs 18 , 20 and a cavity 22 therebetween filled with a beaded carbon 24 of a spherical form.

Other filter configurations that include a cavity filled with spherical beaded adsorbent material are also within the scope of the present invention. The spherical beaded carbon material 24 comprises individual beads preferably of a pre-selected uniform diameter that have the advantageous tendency to contact each other at single points of contact when established as a bed within a cavity of a plug-space-plug cigarette filter.

Such single-point contact produces a bed of the carbon material with minimal channeling or short-circuiting of tobacco smoke drawn through the cavity Accordingly, maximum contact is achieved between the gas phase of the cigarette smoke and the carbon surface of the beads for extremely efficient adsorption of the targeted gas phase components. The filter cavity 22 is preferably filled with spherical carbon beads of the same size or in the alternative, comprise beads having two different sizes, one larger than the other.

Smaller size beads pack uniformly between larger beads, as shown in FIG. Specifically, FIG. The two sizes of beads may be selected mathematically to maximize filing of the cavity 22 and thereby minimize bypass channeling at the outer edges of the cavity. A preferred mathematical relationship is a ratio of. As a further alternative, beaded material may also be selected to provide flavorants to the smoke stream after other filter components have removed much of the gas phase components targeted for removal.

In one particular embodiment, the filter component may be similar to the one shown in FIG. The tendency for single point contact between the spherical beaded carbon 24 minimizes friction between the beads and allows them to flow rapidly during the manufacturing process in a manner similar to liquids so as to self-assemble into a close packed array within filter cavity Such free flowability enables rapid and efficient filling of cavity 22 with little or almost no wasted scatter of the carbon beads.

The carbon materials may be formulated into beaded configurations by techniques known in the art. Moreover, when activated carbon is selected as the spherical beaded carbon material, the carbons disclosed in U. The disclosures of these patents are incorporated herein by reference. Beaded carbon of a consistent and true spherical form may be obtained from the Kureha Chemical Industry Co. As noted above, spherical beaded carbon material 24 immediately packs into a close-packed array with minimal formation of channels which might otherwise reduce the efficiency of the filter bed within the filter cavity This is a direct result of the point-to-point contact between the smooth surfaced beads of material.

Such uniform packing promotes less variation in the filters produced as well as less variation in their overall performance. Unlike granular bed packings which often settle thereby producing formation of bypass channels or other void spaces, filter cavity 22 is substantially completely filled with spherical beaded carbon material during the manufacturing process with no appreciable settling thereafter. Upon lighting of the cigarette 10 A, mainstream smoke is generated by and drawn from the tobacco rod 12 and through the filter Preferably, the filter 14 comprises a first, upstream carbon-bearing segment 50 and a mouth end mouthpiece component In this embodiment, the carbon-bearing segment 50 comprises a plug-space-plug filter sub-assembly that includes a central filter component 54 , a tobacco end component 56 in spaced apart relation to the central filter component 54 so as to define a cavity 58 therebetween filled with spherical beaded carbon material 24 , such as activated beaded carbon.

As discussed above, the spherical beaded carbon material 24 comprises individual beads that contact each other at single points. Moreover, as noted above, the carbon materials may be formulated into beaded configurations by techniques known in the art. When activated carbon is selected as the spherical beaded carbon material, the carbons disclosed in U. The disclosures of these patents are incorporated herein by reference in their entirety for all useful purposes.

The mouth end buccal component 52 is preferably in the form of a cellulose acetate plug or other suitable fibrous or webbed material of moderate to low particulate removal efficiency.

Preferably, the particulate removal efficiency is low, with the denier and grand total denier being selected such that the desired total RTD of the multi-component filter 14 is achieved. Preferably at least some, if not all of the carbon bed 24 is flavor-bearing or otherwise impregnated with a flavor. Still referring to FIG.

As mainstream tobacco smoke is drawn through the central filter component 54 and along the yarn 62 , flavoring is released into the stream of mainstream smoke. Preferably one or more circumferential rows of perforations 64 are formed through the tipping paper 16 at a location along the central component 54 and downstream of the bed of flavored beaded carbon 20 , preferably at the upstream end portion of the central component 54 adjacent to the bed The preferred placement maximizes distance between the buccal end 66 of the cigarette and the perforations 64 , which preferably is at least 12 mm millimeters or more so that a smoker's lips do not occlude the perforations By way of example, the length of tobacco rod 12 is preferably 49 mm, and the length of the multi-component filter 14 is preferably 34 mm.

The length of the four filter components of cigarette 10 A is as follows: the tobacco end component 56 is preferably 6 mm; the length of the beaded carbon bed 24 is preferably 12 mm for carbon loading of mg; the central component 54 is preferably 8 mm; and mouth end component 52 is preferably 8 mm.

Tobacco rod 12 may be wrapped with a conventional cigarette wrapper or banded paper may be used for this purpose. Banded cigarette paper has spaced-apart integrated cellulose bands 68 that encircle the finished tobacco rod of cigarette 10 to modify the mass burn rate of the cigarette so as to reduce risk of igniting a substrate if the cigarette 10 A is left smoldering thereon. Referring now to FIG. In cigarette 10 B the flavor-releasing yarn element 62 is located in the mouth end component 52 at the buccal mouth end of the cigarette 10 B, downstream from the flavored beaded carbon bed 24 and spaced therefrom by the central component In this embodiment, a plasticizer such as triacetin may be applied to the flavor yarn 62 to hold the yarn in place within component 52 and prevent the yarn from being draw out of the filter during smoking.

Alternatively, the flavor yarn 62 may be braided together to achieve the same result. As in the embodiment of FIG. Activated beaded carbon material for use in the above described cigarette filters may be manufactured by many known bead making procedures such as described in U. In many instances the starting materials comprise pitch from petroleum and coal processing.

Fundamentally, any meltable carbon-bearing substance or carbon precursor is sufficient if it can be suspended in a fluid so as to establish a spherical shape and solidified and thereafter carbonized and activated. There are great advantages in machine operation with beaded carbon over more traditional particulate or granulated carbon such granulated carbon as manufactured and sold by PICA USA Inc, McCormick Boulevard, Columbus, Ohio Furthermore, it was discovered that operation of the beaded machine with beaded carbon produced considerably less dust and that the extraneous carbon collected by the machine was reusable and not fractured as is often the case with granular carbon.

With consumers growing increasingly demanding, cigarettes equipped with specialty filters are becoming the norm rather than being a premium add-on. Read more.

A tobacco filter, a method of manufacturing the same, and a cigarette comprising the same are provided. In general, to produce tobacco, various types of leaf tobacco are first blended and processed to give the desired aroma and taste. The processed tobacco leaves are then carved out to produce cut tobacco leaves, and the tobacco leaves are surrounded by cigarette paper to produce a filterless cigarette. Next, a filter is attached to the filterless cigarette as needed.

China cigarette filter production

A network that guarantees customer proximity. Look forward to a wide range of training courses and unique career opportunities. This is the home of cigarette and filter makers. Cigarette makers combine the essential components of a cigarette, namely the tobacco and cigarette paper.

EP1113729B1 - Cigarette manufacturing machine and control system therefor - Google Patents

Nowadays the demand for filter-tip cigarettes has been increasing, chiefly for reasons connected with the smokers health, since the filter units incorporated in cigarettes eliminate in large amounts the nicotine and tars of tobacco smoke, preventing these substances from reaching the smokers lungs. Smokers all over the world, impressed by the insistent recommendations and warnings of medical men, demand cigarettes less harmful to the human body, in other words, filter-tipped cigarettes. The eflfects generated by this increasing demand for cigarettes equipped with good filter units have already surpassed the sphere of interest of cigarette makers and have brought the matter to the attention of the governments of a great many countries such as France, Great Britain, Germany and the United States. However, the makers of filter-tipped cigarettes, in their endeavor to satisfy the requirements of their customers, have met serious difficulties of a practical and financial nature in their aim of producing almost perfect filters with a simultaneous reduction of the high cost of making filter-tipped cigarettes. This is because the manufacture of the filter units and their subsequent incorporation in the cigarettes-which should preferably occur at the time the cigarettes are made in the special cigarette making machines-render necessary not only the use of special and expensive machinery but also the carrying out of accurate, costly and time-consuming operations, due to the special nature of the starting materials which constitute the filter Wick.

Cranfords, cannabis cigarette, tobacco, cannabis, filler particle size, smoldering rate, cannabinoid delivery. Cannabis-based preparations have been used for the treatment of a variety of medical conditions.

How are the components of a cigarette put together in manufacturing and how can design vary the taste and smoke yield? The cellulose acetate tow in a filter is a web of fibres made from wood pulp. In manufacturing, the filter material arrives as a single long band of over 10, fibres pressed into large kg bales. In a filter maker, this band of compact fibres is mechanically stretched to open the fibres up, sprayed with a plasticizer to bind them together, wrapped with thin paper, cut, and fed into a cigarette-making machine. Once the taste has been determined, other design features can vary the strength of the taste, and can reduce the yields of various smoke components, as measured by a standardised machine method. Filter design: The design of the filter can be varied, for example by making perforations, by changing its length or its density by using more fibres , by the fineness of the fibres and by the type of material used. All these filter variations can affect the amount of filtration, and thus the taste, smoking experience and smoke yields as measured by a standardised machine method. Charcoal is sometimes combined with the standard cellulose acetate, as its adsorption properties can reduce some of the gas components in smoke. It is usually used in a filter with two sections: a plain white cellulose acetate section at the mouth end and a section that has been sprinkled with charcoal.

US7997282B2 - Cigarette filter with beaded carbon - Google Patents

Tobacco smoking is a practice which has changed little since American natives first stuffed the tobacco they cultivated in the hills of what is today modern Mexico into hollow reeds. As the practice spread through the Americas, different cultures wrapped their tobacco in vegetable leaves or corn husks, or put it in pipes for smoking. Spanish explorers enjoyed smoking and returned to the Old World with cigars tobacco wrapped in tobacco leaves. In the beginning of the 16th century, beggars in Seville, Spain developed the first paper-rolled cigarettes when they collected discarded cigar butts, shredded them, and rolled them in scraps of paper.

Rev Mal Respir ; Introduction For several decades a more peripheral distribution of the broncho-pulmonary tobacco-related pathologies has been observed.

The present invention relates to a fibrous tow filter material of a cigarette filter rod. Background technique. A filter for filtering tobacco smoke filter rod of the harmful substances and for wrapping the plug wrap the tipping paper composition. In the prior art, it is mainly made of a fibrous tow filter rod acetate tow or polypropylene tow fibrous material. Its filtering effect, depending on their physical and chemical properties and chemical molecular structure of organic compounds. Cigarette smoke harmful substances and respiratory, digestive, closely related to the tissues and organs of the cardiovascular, endocrine and other diseases. Heavy smoking can increase blood low density lipoprotein LDL susceptible to oxidation, resulting in a concentration liter blood and carbon monoxide CO degrees, resulting in hypoxic vascular endothelial injury; a glycoprotein containing the smoke, can activate factor XII and certain mutagenic substances, which may cause vessel wall smooth muscle cell proliferation. Smoking can enhance platelet aggregation and increased blood catecholamine concentration, but unsaturated fatty acids and decreased high-density lipoprotein levels. These all contribute to the occurrence of atherosclerosis. Object of the present invention is to provide a flue gas filter cut harmful substances effect, and taste of cigarettes can meet cigarette filter, in order to reduce poisoning of smokers. Object of the present invention is prepared by a plug Applications of Chitin and its derivatives fiber tow alternative prior art method of acetate tow filter rod and polypropylene fiber tow filter rod reached.

Numerous studies show that chitin and its derivatives are the best material for manufacturing cigarette filter rods. Cross filter effect both for harmful substances.

WO2001070053A1 - Filter member for cigarette - Google Patents

Supplier Location:. Supplier Types: Trade Assurance. Gold Plus Supplier. Minimum Order: OK. Add to Compare. Ruian Joye Machinery Co.

british american tobacco nigeria - Cigarette design and manufacture

Our cigarettes are produced in factories across the world, and each brand has its own unique recipe. Cigarettes are made from:. We operate 44 production facilities and produce over billion cigarettes each year. Cigarettes are produced in factories around the world by processing the tobacco leaf, manufacturing the cigarettes, and preparing the final pack. Learn more below. Our experts use their detailed knowledge to carefully select the blend of different tobacco types such as Virginia, burley, and oriental and leaf grades used in our cigarette brands.

Cigarette & Cigar Filter Supplier

A cigarette filter , also known as a filter tip , is a component of a cigarette , along with cigarette paper , capsules and adhesives. It does not make cigarettes less unhealthy.

Cigarette Filters

Filter manufacturers and cigarette companies are inextricably intertwined and depend on each other. Cigarette sales volumes also affect filter suppliers and they have to come up with ingenious solutions to stay competitive. When it comes to modern cigarettes, few consumers waste a thought on what is arguably the most high-tech component: the filter.

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The seeds of Greenbutts were planted in with the launch of our conceptual filter. The global interest and overwhelming positive feedback helped establish our company as a pioneer in the field of degradable filters.

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Delphi is a compact reclaiming system recovering tobacco from rejected cigarettes during production of the product. Delphi reclaims with highest efficiency and delivering the best quality product, back in the primary production process.

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