EP1917870A2 - A machine manufacturing filters for tobacco products - Google Patents
A machine manufacturing filters for tobacco products Download PDFInfo
- Publication number
- EP1917870A2 EP1917870A2 EP07119418A EP07119418A EP1917870A2 EP 1917870 A2 EP1917870 A2 EP 1917870A2 EP 07119418 A EP07119418 A EP 07119418A EP 07119418 A EP07119418 A EP 07119418A EP 1917870 A2 EP1917870 A2 EP 1917870A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- machine
- duct
- section
- bundle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
- A24D3/0233—Filter rod forming processes by means of a garniture
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
Definitions
- the present invention relates to a machine for manufacturing filters applicable to tobacco products, and in particular to cigarettes.
- the manufacture of cigarette filters generally involves processing a continuous stream of filter material, such as cellulose acetate, which is drawn from a compacted bale.
- the continuous stream of filter material consists in a high number (thousands) of continuous filaments.
- Prior art manufacturing methods include a step of feeding the stream along a predetermined path through processing stations, where it is first stretched lengthwise and crosswise, and then wetted with chemical additives, typically triacetin.
- the filter material is gathered into a continuous rope or bundle of cylindrical appearance by respective shaping means.
- the shaping means appear as a funnel-like duct into which the continuous stream is introduced, carried forward by a flow of air, its transverse dimension reducing gradually to the point that the filaments are drawn into a rope, or bundle, presenting a cross section substantially the same as that of a cigarette.
- the bundle passes through a further processing station where it is wrapped by degrees in a continuous strip of paper material, forming a continuous filter rod that will then be divided up into single plugs by a rotary cutter device.
- the annular passage is inclined relative to the feed direction of the continuous bundle, in such a manner that the pressurized air admitted via the passage will enter the duct and invest the outer surface of the bundle of filter material, assisting its progress toward the outlet of the duct.
- the air enters the annular passage at one or more localized points, with the result that the flow investing the continuous bundle as it forms internally of the duct is not homogeneous.
- the bundle is subject to asymmetrical thrust components that will translate into poor production stability, that is to say inconsistencies in the filtration properties presented by a given continuous bundle.
- the object of the present invention is primarily to provide a machine for manufacturing filters applicable to tobacco products, such as will be unaffected by the drawback mentioned above.
- the object of the invention is to provide a machine manufacturing filters for tobacco products that will convey the continuous bundle of filter material in a uniform manner.
- a further object of the present invention is to provide a machine manufacturing filters for tobacco products, having the attributes needed to ensure good production stability.
- numeral 1 denotes a machine for manufacturing filters applicable to tobacco products, embodied in accordance with the present invention.
- the machine 1 comprises feed means 2 supplying a continuous stream 100 of filter material, a duct 3 along which the continuous stream 100 of filter material is directed and formed into a cylindrical bundle 101 (illustrated partially in figure 3), a nozzle 4 at the end of the duct 3, from which the bundle emerges as a continuous rod 102, a garniture section 5 along which the continuous rod 102 is enveloped in a strip 6 of paper plugwrap material, and means 7 by which the wrapped rod is cut into single filter plugs, also feed means 8, illustrated in figures 2, 3 and 4, supplying a flow of air by which the bundle 101 forming within the duct 3 is subjected to an axial pushing force.
- the feed means 8 comprise an inlet port 9 admitting the flow of air, associated with a fitting 10 for connection to a compressed air supply line (not illustrated), and an annular passage 11 located between the air inlet 9 and the bore of the duct 3.
- the annular passage affords an air gap of which the flow section is significantly small compared to the length of the selfsame gap as measured along the flow-through direction.
- Air is conveyed from the inlet port 9 toward the duct 3 in a direction substantially orthogonal, or ideally inclined, relative to the feed direction X followed by the bundle 101 along the duct 3.
- the air inlet port 9 is not of annular geometry like the passage 11, but located at a single point on the periphery of the duct 3, or in any event a limited number of points (see figures 2 to 4).
- the feed means 8 supplying the flow of air comprise equalizing means 12, preferably of a type designed to induce a pressure drop, located between the inlet port 9 and the annular passage 11 and serving to ensure the supply of a uniform flow of air into the passage 11.
- the continuous bundle 101 forming within the duct 3 is invested by a homogeneous flow of air such as will assist its progress along the selfsame duct 3, thus favouring a good stability of production (with filtration properties maintained constant along the full length of the bundle).
- the equalizing means 12 comprise an expansion chamber 13 located between the inlet port 9 admitting the flow of compressed air, and the annular passage 11.
- the expansion chamber 13 is annular in shape and fully encircles the innermost part of the duct 3, that is to say the tube 14 internally of which the continuous bundle 101 advances.
- the expansion chamber 13 is also connected to a distribution chamber 15, presenting a wall 16, by way of which the flow of air is directed into the annular passage 11.
- the compressed air inlet port 9 communicates directly with the expansion chamber 13, whilst the distribution chamber 15 is located downstream of the expansion chamber 13, presenting an annular configuration and encircling the tube 14 in like manner to the upstream chamber 13.
- the holes 17 serve to induce further pressure losses in the flow of air, the effect of which being to equalize the distribution of both the velocity component and the pressure component in the flow directed through the annular passage 11 and onto the continuous bundle 101.
- the annular passage 11 is inclined in relation to the feed direction X followed by the bundle 101 along the duct 3, and in particular, inclined at an angle such that the flow of air will be directed as tangentially as possible onto the bundle 101.
- the annular passage 11 is created between two half sections 18 and 19 making up the duct 3.
- the first half-section 18 of the duct 3 presents a cavity 20 establishing a first segment of the aforementioned tube 14 through which the bundle 101 is directed.
- the cavity 20 is of substantially convergent funnel-like geometry, and thus easily associated with the feed means 2 from which the continuous stream 100 of filter material is received.
- a cavity 20 of the type in question could be embodied as a succession of rectilinear conical duct portions joined suitably one to the next, or alternatively, with a continuous profile of which the geometry appears substantially parabolic or comparable to cubic splines or splines of higher order.
- the second half-section 19 of the duct 3 is associated stably with the first half-section 18 and translatable relative thereto along an axis parallel to the feed direction X followed by the cylindrical bundle 101 forming in the duct, as will be made clearer in due course.
- the first and second half-sections 18 and 19 present respective annular surfaces denoted 21 and 22, breasted one with another and inclined relative to the aforementioned feed direction X of bundle 101.
- the two annular surfaces 21 and 22 in question combine operationally to delimit a main portion of the passage 11.
- the distance separating the two inclined annular surfaces 21 and 22 can be adjusted by translating the second half-section 19 relative to the first half-section 18, so as to widen or narrow the flow section afforded by the passage 11: see figure 3, for example, where the flow section of the passage 11 is at minimum, or figure 4, where the flow section is at maximum.
- the second half-section 19 is aligned and associated coaxially with the first half-section 18 by way of suitable coupling means, which in the preferred embodiment illustrated are embodied as respective screw threads 23.
- this same second half-section 19 can be distanced from the first half-section 18, and the flow section of the passage 11 widened.
- the flow equalizing means 12, and more precisely the expansion chamber 13 and the distribution chamber 15, are associated permanently with the first half-section 18 and therefore remain stationary during the movement by which the flow section of the annular passage 11 is adjusted.
- the second half-section 19 is located downstream of the first half-section 18, as already mentioned, and coupled directly to the nozzle 4 from which the bundle 101 emerges.
- the first half-section 18 presents a sleeve 24 in which the second half-section 19 is insertable and on which an aforementioned coupling thread 23 is formed.
- the outer surface of the sleeve 24 presents a set screw 25 passing through the sleeve 24 wall, by which the second half-section 19 is engaged and locked in the selected angular position.
- the terminal portion of the annular passage 11 is incorporated directly into a portion of the aforementioned tube 14 coinciding with a substantially cylindrical cavity 27 afforded by the second half-section 19.
- the portion of the tube 14 afforded by the second half-section 19 presents a plurality of grooves 28 extending parallel to the feed direction X of the bundle 101, also parallel one with another and distributed circumferentially around the tube 14.
- the grooves 28 will ensure that the flow of air continues to invest the entire surface of the bundle 101 and thus cause the material to advance correctly.
- the grooves 28 also function actively as flow guides.
- the equalizing means ensure that the pressure and velocity of the air flowing into the annular passage and destined to invest the bundle gathering in the duct will be, to all intents and purposes, uniformly distributed around the entire annular periphery of the passage inlet section.
- the function of the expansion chamber and the distribution chamber is to handle the flow of air from the inlet port to the annular passage in such a way that it will be rendered uniform and without appreciable variations or imbalances in pressure and velocity.
- any asymmetrical distribution of pressure and velocity components in the air flow, considered in relation to the inlet section of the annular passage, is significantly attenuated, so that the flow of air will present substantially the same pressure and velocity characteristics when passing both through the portion of the passage located in close proximity to the inlet port and through the portion of the passage located farthest from the inlet port.
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
Description
- The present invention relates to a machine for manufacturing filters applicable to tobacco products, and in particular to cigarettes.
- The manufacture of cigarette filters generally involves processing a continuous stream of filter material, such as cellulose acetate, which is drawn from a compacted bale.
- In practice, the continuous stream of filter material consists in a high number (thousands) of continuous filaments.
- Prior art manufacturing methods include a step of feeding the stream along a predetermined path through processing stations, where it is first stretched lengthwise and crosswise, and then wetted with chemical additives, typically triacetin.
- At a further station located downstream of the aforementioned processing stations, the filter material is gathered into a continuous rope or bundle of cylindrical appearance by respective shaping means.
- In certain prior art embodiments, the shaping means appear as a funnel-like duct into which the continuous stream is introduced, carried forward by a flow of air, its transverse dimension reducing gradually to the point that the filaments are drawn into a rope, or bundle, presenting a cross section substantially the same as that of a cigarette.
- Once formed, the bundle passes through a further processing station where it is wrapped by degrees in a continuous strip of paper material, forming a continuous filter rod that will then be divided up into single plugs by a rotary cutter device.
- The aforementioned flow of air that carries the stream through the funnel-like duct is admitted by way of an annular passage, connecting the duct to a source of pressurized air.
- The annular passage is inclined relative to the feed direction of the continuous bundle, in such a manner that the pressurized air admitted via the passage will enter the duct and invest the outer surface of the bundle of filter material, assisting its progress toward the outlet of the duct.
- It has been observed that in prior art machines, however, the continuous bundle is not transported uniformly through the funnel-like duct.
- In effect, the air enters the annular passage at one or more localized points, with the result that the flow investing the continuous bundle as it forms internally of the duct is not homogeneous.
- As a consequence of the drawback in question, the bundle is subject to asymmetrical thrust components that will translate into poor production stability, that is to say inconsistencies in the filtration properties presented by a given continuous bundle.
- The object of the present invention is primarily to provide a machine for manufacturing filters applicable to tobacco products, such as will be unaffected by the drawback mentioned above.
- In particular, the object of the invention is to provide a machine manufacturing filters for tobacco products that will convey the continuous bundle of filter material in a uniform manner.
- A further object of the present invention is to provide a machine manufacturing filters for tobacco products, having the attributes needed to ensure good production stability.
- The stated objects are realized according to the invention in a machine for manufacturing filters applicable to tobacco products, as characterized in one or more of the appended claims.
- The invention will now be described in detail, by way of example, with the aid of the accompanying drawings, in which:
- figure 1 is a schematic illustration of a machine manufacturing filters for tobacco products, in accordance with the present invention;
- figure 2 illustrates a detail of the machine in figure 1, viewed in perspective with certain parts omitted better to reveal others;
- figure 3 illustrates the detail of figure 2 in a section on III-III, viewed in a first operating configuration;
- figure 4 is the section of figure 3, illustrating a second operating configuration.
- With reference to figure 1,
numeral 1 denotes a machine for manufacturing filters applicable to tobacco products, embodied in accordance with the present invention. - Whilst the following specification describes a single track filter maker, the various elements are referable equally to a twin track machine.
- The
machine 1 comprises feed means 2 supplying acontinuous stream 100 of filter material, aduct 3 along which thecontinuous stream 100 of filter material is directed and formed into a cylindrical bundle 101 (illustrated partially in figure 3), anozzle 4 at the end of theduct 3, from which the bundle emerges as acontinuous rod 102, a garniture section 5 along which thecontinuous rod 102 is enveloped in a strip 6 of paper plugwrap material, and means 7 by which the wrapped rod is cut into single filter plugs, alsofeed means 8, illustrated in figures 2, 3 and 4, supplying a flow of air by which thebundle 101 forming within theduct 3 is subjected to an axial pushing force. - Referring in particular to figures 2, 3 and 4, the feed means 8 comprise an
inlet port 9 admitting the flow of air, associated with afitting 10 for connection to a compressed air supply line (not illustrated), and anannular passage 11 located between theair inlet 9 and the bore of theduct 3. For the purposes of the present invention, the annular passage affords an air gap of which the flow section is significantly small compared to the length of the selfsame gap as measured along the flow-through direction. - In the example of figures 2 to 4, accordingly, the proportions of the
annular passage 11 are not to scale, and in particular, the width of the gap admitting the flow of air is augmented in order to illustrate thepassage 11 to best advantage. - Air is conveyed from the
inlet port 9 toward theduct 3 in a direction substantially orthogonal, or ideally inclined, relative to the feed direction X followed by thebundle 101 along theduct 3. Also, theair inlet port 9 is not of annular geometry like thepassage 11, but located at a single point on the periphery of theduct 3, or in any event a limited number of points (see figures 2 to 4). - To advantage, the feed means 8 supplying the flow of air comprise equalizing
means 12, preferably of a type designed to induce a pressure drop, located between theinlet port 9 and theannular passage 11 and serving to ensure the supply of a uniform flow of air into thepassage 11. - Accordingly, the
continuous bundle 101 forming within theduct 3 is invested by a homogeneous flow of air such as will assist its progress along theselfsame duct 3, thus favouring a good stability of production (with filtration properties maintained constant along the full length of the bundle). - In particular, the equalizing means 12 comprise an
expansion chamber 13 located between theinlet port 9 admitting the flow of compressed air, and theannular passage 11. - The
expansion chamber 13 is annular in shape and fully encircles the innermost part of theduct 3, that is to say thetube 14 internally of which thecontinuous bundle 101 advances. - The
expansion chamber 13 is also connected to adistribution chamber 15, presenting awall 16, by way of which the flow of air is directed into theannular passage 11. - More exactly, and as illustrated in figures 2, 3 and 4, the compressed
air inlet port 9 communicates directly with theexpansion chamber 13, whilst thedistribution chamber 15 is located downstream of theexpansion chamber 13, presenting an annular configuration and encircling thetube 14 in like manner to theupstream chamber 13. - To advantage, the
aforementioned wall 16 of thedistribution chamber 15, interfacing with theexpansion chamber 13 and intercepting the flow of air, presents a plurality ofholes 17 by which the flow of air about to enter theannular passage 11 is subjected to a further equalizing action. - In practice, the
holes 17 serve to induce further pressure losses in the flow of air, the effect of which being to equalize the distribution of both the velocity component and the pressure component in the flow directed through theannular passage 11 and onto thecontinuous bundle 101. - As discernible in figures 3 and 4, the
annular passage 11 is inclined in relation to the feed direction X followed by thebundle 101 along theduct 3, and in particular, inclined at an angle such that the flow of air will be directed as tangentially as possible onto thebundle 101. - The
annular passage 11 is created between twohalf sections duct 3. - In particular, the first half-
section 18 of theduct 3 presents acavity 20 establishing a first segment of theaforementioned tube 14 through which thebundle 101 is directed. - The
cavity 20 is of substantially convergent funnel-like geometry, and thus easily associated with the feed means 2 from which thecontinuous stream 100 of filter material is received. - A
cavity 20 of the type in question could be embodied as a succession of rectilinear conical duct portions joined suitably one to the next, or alternatively, with a continuous profile of which the geometry appears substantially parabolic or comparable to cubic splines or splines of higher order. - The second half-
section 19 of theduct 3 is associated stably with the first half-section 18 and translatable relative thereto along an axis parallel to the feed direction X followed by thecylindrical bundle 101 forming in the duct, as will be made clearer in due course. - The first and second half-
sections bundle 101. - The two
annular surfaces passage 11. - More exactly, and as emphasized pictorially in figures 2 to 4 of the drawings, the two inclined
annular surfaces - Advantageously, the distance separating the two inclined
annular surfaces section 19 relative to the first half-section 18, so as to widen or narrow the flow section afforded by the passage 11: see figure 3, for example, where the flow section of thepassage 11 is at minimum, or figure 4, where the flow section is at maximum. - To enable the aforementioned relative translatory motion between the two half-
sections section 19 is aligned and associated coaxially with the first half-section 18 by way of suitable coupling means, which in the preferred embodiment illustrated are embodied asrespective screw threads 23. - Thus, rotating the second half-
section 19 about an axis coinciding with the feed direction X of thebundle 101, this same second half-section 19 can be distanced from the first half-section 18, and the flow section of thepassage 11 widened. - Importantly, the flow equalizing means 12, and more precisely the
expansion chamber 13 and thedistribution chamber 15, are associated permanently with the first half-section 18 and therefore remain stationary during the movement by which the flow section of theannular passage 11 is adjusted. - Moreover, since only the second half-
section 19 of the duct is repositioned to widen or narrow the flow section of theannular passage 11, there is no risk that traces of chemical compounds, utilized to treat thecontinuous stream 101 of filter material upstream of theduct 3, will be released during the operation of adjusting thepassage 11. - In effect, the second half-
section 19 is located downstream of the first half-section 18, as already mentioned, and coupled directly to thenozzle 4 from which thebundle 101 emerges. - The first half-
section 18 presents asleeve 24 in which the second half-section 19 is insertable and on which anaforementioned coupling thread 23 is formed. The outer surface of thesleeve 24 presents aset screw 25 passing through thesleeve 24 wall, by which the second half-section 19 is engaged and locked in the selected angular position. - To rotate the second half-
section 19 relative to the first half-section 18, accordingly, it suffices to loosen theset screw 25, whereupon the second half-section 19 can be turned one way or the other by means ofdrive holes 26 located in the end face. - To advantage, the terminal portion of the
annular passage 11 is incorporated directly into a portion of theaforementioned tube 14 coinciding with a substantiallycylindrical cavity 27 afforded by the second half-section 19. - More particularly, the portion of the
tube 14 afforded by the second half-section 19 presents a plurality ofgrooves 28 extending parallel to the feed direction X of thebundle 101, also parallel one with another and distributed circumferentially around thetube 14. - Accordingly, and to advantage, even in the event that the alignment of the
bundle 101 of filter material should be less than perfectly symmetrical on entering theduct 3, and more especially thetube 14, thegrooves 28 will ensure that the flow of air continues to invest the entire surface of thebundle 101 and thus cause the material to advance correctly. - In addition, by favouring an axial orientation of the air flow into the
tube 14, thegrooves 28 also function actively as flow guides. - The objects stated at the outset are realized in accordance with the invention.
- In effect, the equalizing means ensure that the pressure and velocity of the air flowing into the annular passage and destined to invest the bundle gathering in the duct will be, to all intents and purposes, uniformly distributed around the entire annular periphery of the passage inlet section.
- In particular, the function of the expansion chamber and the distribution chamber is to handle the flow of air from the inlet port to the annular passage in such a way that it will be rendered uniform and without appreciable variations or imbalances in pressure and velocity.
- In this way, even utilizing just the one inlet port, or at all events a limited number of inlet ports, any asymmetrical distribution of pressure and velocity components in the air flow, considered in relation to the inlet section of the annular passage, is significantly attenuated, so that the flow of air will present substantially the same pressure and velocity characteristics when passing both through the portion of the passage located in close proximity to the inlet port and through the portion of the passage located farthest from the inlet port.
- This ensures that the pressure and velocity of the air flow ultimately investing the rope or bundle of filaments forming along the duct will be substantially uniform around the entire periphery of the bundle, thereby guaranteeing that the bundle advances correctly and maintaining good production stability.
Claims (14)
- A machine manufacturing filters for tobacco products, comprising- feed means (2) supplying at least one continuous stream (100) of filter material,- a duct (3) along which the continuous stream (100) is directed and gathered into a cylindrical rope or bundle (101) of such filter material,- a nozzle (4) at the end of the duct (3) from which the bundled filter material emerges as a continuous rod (102),- cutting means (7) by which the rod (102) is divided into discrete filter plugs, and- feed means (8) supplying a flow of air by which the gathering bundle (101) is forced axially along the duct (3), comprising an inlet port (9) admitting the flow of air and an annular passage (11) located between the inlet port (9) and the bore of the duct (3),characterized
in that the feed means (8) supplying a flow of air comprise equalizing means (12) by which the flow of air located between the inlet (9) port and the annular passage (11) is rendered uniform. - A machine as in claim 1, wherein flow equalizing means (12) comprise an expansion chamber (13) in fluid communication with the inlet port (9) admitting the flow of air and with the annular passage (11).
- A machine as in claim 2, wherein the expansion chamber (13) is annular, and placed in direct communication with the air flow inlet port (9).
- A machine as in claim 2 or claim 3, wherein flow equalizing means (12) further comprise a distribution chamber (15) located between the expansion chamber (13) and the annular passage (11) and serving to bring about a uniform distribution of the flow of air directed from the expansion chamber (13) to the annular passage (11).
- A machine as in claim 4, wherein the distribution chamber (15) is annular and comprises a wall (16) furnished with a plurality of holes (17) offered directly to the expansion chamber (13), serving to equalize the flow of air entering the distribution chamber (15).
- A machine as in claim 5, wherein the distribution chamber (15) is placed in direct communication with the annular passage (11).
- A machine as in claim 1, wherein the duct (3) comprises a first half-section (18) and a second half-section (19) disposed coaxially with and engaging one another, presenting respective annular surfaces (21, 22) inclined relative to a feed direction (X) followed by the gathering bundle (101) and combining to create at least a part of the annular passage (11).
- A machine as in claim 7, wherein the second half-section (19) comprises a plurality of grooves (28) presented by a wall of a tube (14) afforded by the duct (3), through and along which the bundle (101) is directed and gathered, and establishing a terminal part of the annular passage (11).
- A machine as in claim 7, wherein the second half-section (19) is capable of movement relative to the first half-section (18) in a direction parallel to the feed direction (X) followed by the bundle (101), to the end of increasing or reducing the flow section afforded by the annular passage (11).
- A machine as in claim 9, wherein flow equalizing means (12) are embodied integrally with the first half-section (18).
- A machine as in claim 10, wherein the first half-section (18) comprises a cavity (20) presenting a substantially convergent funnel-like appearance, through and along which the bundle (101) is directed and gathered, directed at one end toward the feed means (2) supplying the filter material, and toward the nozzle (4) at the opposite end.
- A machine as in claim 11, wherein the cavity (20) appears as succession of rectilinear conical duct portions joined one to the next.
- A machine as in claim 11, wherein the cavity (20) presents a continuous and streamlined profile of substantially parabolic geometry, or comparable to cubic splines or splines of higher order.
- A machine as in claim 9, wherein the second half-section (19) is associated movably with the first half-section (18) by way of a screw-threaded coupling (23).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO20060749 ITBO20060749A1 (en) | 2006-10-31 | 2006-10-31 | FILTER PACKAGING MACHINE FOR SMOKE ITEMS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1917870A2 true EP1917870A2 (en) | 2008-05-07 |
EP1917870A3 EP1917870A3 (en) | 2009-03-11 |
EP1917870B1 EP1917870B1 (en) | 2011-01-26 |
Family
ID=39099854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20070119418 Not-in-force EP1917870B1 (en) | 2006-10-31 | 2007-10-26 | A machine manufacturing filters for tobacco products |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1917870B1 (en) |
CN (1) | CN101171977B (en) |
DE (1) | DE602007012189D1 (en) |
IT (1) | ITBO20060749A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010108740A1 (en) * | 2009-03-26 | 2010-09-30 | British American Tobacco (Investments) Limited | Guide nozzle for use with filter rod manufacturing apparatus |
ITBO20100637A1 (en) * | 2010-10-22 | 2012-04-23 | Gd Spa | MACHINE FOR THE PRODUCTION OF FILTERS FOR CIGARETTES. |
ITBO20100693A1 (en) * | 2010-11-19 | 2012-05-20 | Montrade S R L | METHOD AND DEVICE FOR THE PNEUMATIC ADVANCEMENT OF A CONTINUOUS CORD OF FILTERING MATERIAL FOR SMOKE ITEMS |
DE202012003924U1 (en) | 2011-04-18 | 2012-06-14 | G.D Società per Azioni | Compactor or compactor group for a machine for the production of cigarette filters |
CN103783665A (en) * | 2014-03-01 | 2014-05-14 | 南通烟滤嘴有限责任公司 | Two-level wind-powered tow collector |
ITBO20130314A1 (en) * | 2013-06-21 | 2014-12-22 | Gd Spa | MACHINE FOR THE PRODUCTION OF FILTERS FOR CIGARETTES |
EP3473111B1 (en) | 2017-10-18 | 2022-12-07 | G.D S.p.A. | Crimping unit |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102715653B (en) * | 2012-07-03 | 2013-11-13 | 云南玉溪卷烟厂滤嘴棒分厂 | Guide wire horn nozzle of filter stick forming machine |
PL223115B1 (en) * | 2013-02-15 | 2016-10-31 | Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością | Method and apparatus for temporarily compressing the filtering material |
DE102014011542A1 (en) | 2014-08-08 | 2016-02-11 | Hauni Maschinenbau Ag | Transport nozzle for a device for the production of filter rods for the tobacco processing industry and apparatus for the production of filter rods for the tobacco processing industry |
GB201715922D0 (en) * | 2017-09-29 | 2017-11-15 | British American Tobacco Investments Ltd | A filter unit for a smoking article |
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EP0546519A2 (en) | 1991-12-09 | 1993-06-16 | Mitsubishi Rayon Co., Ltd | Air jet for producing filter plug for cigarette |
EP0594054A2 (en) | 1992-10-21 | 1994-04-27 | Hoechst Celanese Corporation | Transport jet adapter |
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US3050430A (en) * | 1959-11-12 | 1962-08-21 | Eastman Kodak Co | Jet and method of filter manufacture |
US3173188A (en) * | 1961-11-03 | 1965-03-16 | Eastman Kodak Co | Tobacco smoke filter formation |
-
2006
- 2006-10-31 IT ITBO20060749 patent/ITBO20060749A1/en unknown
-
2007
- 2007-10-26 DE DE200760012189 patent/DE602007012189D1/en active Active
- 2007-10-26 EP EP20070119418 patent/EP1917870B1/en not_active Not-in-force
- 2007-10-30 CN CN2007101849966A patent/CN101171977B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0546519A2 (en) | 1991-12-09 | 1993-06-16 | Mitsubishi Rayon Co., Ltd | Air jet for producing filter plug for cigarette |
EP0594054A2 (en) | 1992-10-21 | 1994-04-27 | Hoechst Celanese Corporation | Transport jet adapter |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010108740A1 (en) * | 2009-03-26 | 2010-09-30 | British American Tobacco (Investments) Limited | Guide nozzle for use with filter rod manufacturing apparatus |
US8652020B2 (en) | 2009-03-26 | 2014-02-18 | British Amercian Tobacco (Investments) Limited | Guide nozzle for use with filter rod manufacturing apparatus |
ITBO20100637A1 (en) * | 2010-10-22 | 2012-04-23 | Gd Spa | MACHINE FOR THE PRODUCTION OF FILTERS FOR CIGARETTES. |
ITBO20100693A1 (en) * | 2010-11-19 | 2012-05-20 | Montrade S R L | METHOD AND DEVICE FOR THE PNEUMATIC ADVANCEMENT OF A CONTINUOUS CORD OF FILTERING MATERIAL FOR SMOKE ITEMS |
DE202012003924U1 (en) | 2011-04-18 | 2012-06-14 | G.D Società per Azioni | Compactor or compactor group for a machine for the production of cigarette filters |
ITBO20110206A1 (en) * | 2011-04-18 | 2012-10-19 | Gd Spa | COMPACT GROUP FOR A MACHINE FOR THE PRODUCTION OF FILTERS FOR CIGARETTES. |
ITBO20130314A1 (en) * | 2013-06-21 | 2014-12-22 | Gd Spa | MACHINE FOR THE PRODUCTION OF FILTERS FOR CIGARETTES |
EP2818061A1 (en) * | 2013-06-21 | 2014-12-31 | G.D Societa' Per Azioni | Cigarette filter manufacturing machine |
CN103783665A (en) * | 2014-03-01 | 2014-05-14 | 南通烟滤嘴有限责任公司 | Two-level wind-powered tow collector |
EP3473111B1 (en) | 2017-10-18 | 2022-12-07 | G.D S.p.A. | Crimping unit |
Also Published As
Publication number | Publication date |
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ITBO20060749A1 (en) | 2007-01-30 |
CN101171977B (en) | 2011-08-10 |
DE602007012189D1 (en) | 2011-03-10 |
CN101171977A (en) | 2008-05-07 |
EP1917870B1 (en) | 2011-01-26 |
EP1917870A3 (en) | 2009-03-11 |
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