WO1983001181A1 - Method and apparatus for production of smoke filter components - Google Patents
Method and apparatus for production of smoke filter components Download PDFInfo
- Publication number
- WO1983001181A1 WO1983001181A1 PCT/US1982/001358 US8201358W WO8301181A1 WO 1983001181 A1 WO1983001181 A1 WO 1983001181A1 US 8201358 W US8201358 W US 8201358W WO 8301181 A1 WO8301181 A1 WO 8301181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- former
- drum
- cylindrical object
- transport means
- heated
- Prior art date
Links
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
- A24D3/025—Final operations, i.e. after the filter rod forming process
- A24D3/0258—Means for making grooves
Abstract
A method according to which a cylindrical object (36), such as a rod of smoke filter material, is pressed against a heated former element (66) to form a permanent impression in one portion of the object as the former element and the object are simultaneously moved along a predetermined path. The object is then disengaged from the first former element (66) and pressed against a second heated former element to form a permanent impression in another portion thereof as the second former element and the object is moved along a second predetermined path, which may be an extension of the first, or not. Apparatus is disclosed, in one preferred embodiment of which the first and second former elements are disposed on the periphery of respective drums (24 and 26) in such a manner that as the drums rotate in opposite directions, the object is transferred from the first to the second former element as the two former elements pass each other. In another embodiment, the first and second former elements (66) are disposed on the periphery of a single drum (24) and a roller block (98) adjacent the drum disengages the object from the first former element and rolls it along the drum periphery to the second. In a third embodiment, the object (36) is rolled continuously but slowly along the periphery of a rotating drum (102) on whose surface the former elements are disposed. The method and apparatus disclosed solves the problem of high speed manufacture of shaped filter plugs employing a heated former to form the filter element.
Description
Method and Apparatus for Production of Smoke Filter Components
BACKGROUND OF THE INVENTION
The present invention pertains to a method and an apparatus for imparting a desired shape to a cylindrical object such as a component of a smoke filter or other smoking apparatus. More particularly, it pertains to a method and apparatus for providing deformations of any desired shape in such an object, preferably by means of a combination of pressure and heat- Cigarette filters comprising a cylindrical rod of cellulose acetate or another suitable filtering material are well known. The filtration of the tobacco smoke can be made more efficient by providing grooves of various shapes and sizes in the exterior peripheral surface of the filter rod. For example, U.S. Patent 3,811,451, issued May 21, 1974, to Berger for a Tobacco Smoke Filter, discloses a filter of cellulose acetate containing a pouch filled with a more highly sorbent material such as activated charcoal, and having a plurality of longitudinal flutes which extend the greater part of the length of the filter from one end thereof.
U.S. Patent 4,022,221, also to Berger, discloses a filter having, in one embodiment, a plurality of longi¬ tudinal flutes or grooves formed in the axially central portion of the external surface thereof. In another embodiment, the flutes extend from the end of the filter adjacent the tobacco rod to a point near the mouth end of
OMF
the filter, -and in a third embodiment, a helical groove is provided in the peripheral surface, of the filter.
U.S. Patent 3,768,489, issued October 30, 1973, to Kiefer et al., for a Tobacco Smoke Filter, discloses a filter of cellulose acetate or the like, the filtration characteristics of which are improved by the provision of two longitudinal grooves in the exterior of the filter. The two grooves are located diametrically opposite each other and are axially offset from each other. In another embodiment, the two flutes are axially aligned with.each, other, and the ends of the filter are cut oblique to the axis thereof. In a third embodiment., a plurality of circumferentially adjacent grooves are provided on each side of the filter, and in a fourth embodiment a sectoral recess is formed on each side of the filter in place of the grooves.
The disclosures of U.S. Patents 3,768,489, - 3,811,451 and 4,022,221 are incorporated herein by.refer¬ ence. ' " *•. '- .-- Various methods for forming grooves, flutes, - and other external deformations in filters are known. For example, in U.S. Patent 3,811,451, the flutes are formed by means of crimping. In U.S. Patent 4,022,221, it is similarly contemplated to' form the flutes by means of crimping wheels such as those--shown therein.
U.S. Paten -4,164,438, issued August 14, 1979, to ebet for a "Method of Making Transverse Flow of Cigarette Filters", discloses a method and apparatus for forming grooves on opposite sides of a filter plug. The filter plugs are first heated by exposure to high temperature water vapor or by means of high frequency electromagnetic radiation, for example, to . plasticize the cellulose acetate of which they are made. After being heated, the filter plugs are shaped by means of a device comprising three drums rotating about parallel axes. . Each of the drums has grooves formed in its -peri¬ pheral surface parallel" to its -axis to receive the filter plugs. ' • ' *
-."- Each filter plug is initially fed while in a heated state to the first drum, which receives it in a •peripheral groove and carries it to the point where the first and second drums are closest. The gap between the 5 first and second drums is quite small, and as the* filter plug reaches this point it is deformed by an indenter disposed in a peripheral groove of the second drum, the first drum serving as a counterpunch. As the filter plug is deformed in this manner, it is simultaneously transferred 10 from the first to the second drum, which then conveys it to the third drum, on which indenters are also disposed. As the filter plug reaches the gap between the second and third drums, it is deformed a second time by one of .the indenters on the third drum. The second drum acts as a 15 counterpunch for this process.
'. After the filter plug is punched for the- second time, it remains on the second drum, which carries it to a fourth drum that removes it from the second drum by means of suction and then releases it into a discharge 20. chute.
By this method, the filter rod is shaped by a series of very quick punching operations each of which is performed by a punch disposed on one drum while another drum, carrying the filter plug; serves as a counterpunch. 5 In order for the desired shape to be impressed on a .filter plug satisfactorily, the portion of the surface that is to be deformed must be in contact with the heated forming element for a certain minimum period of time " which is a function of the filter plug material. Accord- 0 ingly, the short time allotted.by ebet to form each groove i the filter plug would make i impossible to shape filter plugs at an acceptable speed.
.- Another method and apparatus for shaping filter rods are disclosed in U.S. Patent 4,149,546, issued 5 April 17, 1979, to Luke et al. for the "Production of Tobacco-Smoke Filters". This patent discloses using a rotating drum to move the filter plugs past a stationary heated forming unit defined by the inner surface of an
ar'cuate stator positioned adjacent the peripheral surface of the drum and spaced a uniform distance -therefrom. The filter plugs are borne by the drum in a"manner that permits them to rotate about'their own longitudinal axes. The rotation of the drum carries each filter plug along the length of the stator. As this occurs, the filter plug, being free to rotate, rolls along the inner surface -' • of the stator, the shape of which is imparted to the . -.filter plug. 0 it is believed to be impossible, using the method disclosed by Luke et al. , to shape filter plugs satisfactorily at a rate of more than 200-300 filter plugs per minute. Since a cigarette maker routinely produces about 4,000 cigarettes per minute, this low rate is unacceptable. The problem is believed to be that, using this method, the filter plugs remain in contact with the heated forming element a sufficient length of time to be properly shaped only if the drum is rotated at a relatively slow speed. 0 U.S. Patent 3,483,873, issued December 16,
1979, to Hinzmann, for an "Apparatus'for Making Holes in Tobacco Rods or the Like", discloses an apparatus in which holes are formed in a tobacco rod by means of pins provided in the periphery of a drum about which the tobacco rods are rolled by means*of an adjacent endless belt.
SUMMARY OF THE INVENTION " . ' . . . -
- It is accordingly the principal object of the invention to provide a method and an apparatus for forming 0 cylindrical articles such as smoke filter components without the disadvantages of the prior-art.
It is more particularly the object of the invention to provide a method and an apparatus with which cigarette filter components can be formed at a rate similar to that at which cigarettes can be manufactured by a-cigarette making machine.'
-.*'* According to the present invention, a plurality of units for forming the cylindrical objects are provided about the periphery of at least one rotatable drum. Each forming unit, or former, includes one or more heated ' 5 elements to form the. desired flutes. Means for pressing the article against the elements are also provided.
The cylindrical object is placed in contact with one of the forming units, or formers, where it remains a sufficient length of time to have a desired 10 pattern of one or more flutes or other deformations produced in one portion of it. The article is then removed from the first former and" placed in contact with- another to -have another portion of its surface shaped in the desired manner. The second former may be either on 15 the same drum as the first former or on a different drum. If desired, the object can be successively brought-into contact with more than two formers.
According to one preferred embodiment of the invention, two rotatable drums each have an equal number 20. of formers disposed about their circumference, each former being so oriented as to be able to receive a cylindrical object with the axis of the latter parallel to that of the drum. It is preferred that the articles being shaped be retained in the -former sections by means 25 of vacuum suction exerted from the interior of the drums. An endless belt is provided "adjacent each drum to press the articles against the formers, which are of a type that-operate on the articles by a combination of heat and pressure. The amount of pressure applied to the articles 30 by the belts is preferably adjustable.
_ It is desired that the article not roll about its longitudinal axis while in contact .with the forming
. unit, as the deformations to be made will ot necessarily be symmetric about that axis. Accordingly, the belt is
35 caused to move parallel, to the adjacent drum surface at such a speed as to prevent the article from rolling.
The two drums bearing the formers are arranged to rotate in opposite directions about parallel axes, and
OMPI
are spaced a small distance apart. The rotation of the drums is synchronized such that when the article has been transported by the first drum to the gap between the two drums, it is for a brief moment simultaneously in contact with a former on each drum. The article is transferred at this point to the second drum, preferably by terminat¬ ing the vacuum suction exerted on the article by the first drum and simultaneously causing the second drum to apply suction to pull the article against a former on the second drum. The second former shapes the side of the article opposite that previously shaped by the former on the first drum.
When the second side of the article has been given the desired shape, the article is released at a predetermined location for conveyance to the next work station.
According to a second preferred embodiment, all of the formers are disposed on the periphery of a single rotatable drum. Two pressure belts are provided, circum- ferentially spaced from each other about the periphery of the drum and each adjacent a different_portion of the peripheral surface of* the drum. A roll block is located beside the drum and between the belts. The roll block is so shaped and positioned that as the rotation of the drum carries an article past it on a "former, the roll block forces the article out of the former and onto the surface of the drum. The article is rolled along the drum surface between the drum and the stationary roll block onto the next adjacent former. The formers are spaced such a distance apart along the surface of the drum that in . moving from one former to the next, each article is rotated through a total angle equal to an odd number of half-turns about its axis, so that the side of the article that is left uήshaped by the first former faces the heated elements of the second former.
A third preferred embodiment of the invention comprises a first drum having grooves provided in its peripheral surface. Individual heated flute forming
elements are mounted in the drum periphery, the number of flute forming elements between each two drum grooves preferably being equal to the number of depressions to be formed in each filter rod. A pressure belt is provided 5 to press the filter plugs against the drum periphery. The filter plugs are fed to the drum and are received in the drum grooves. The belt is moved at a speed slightly . different from, preferably less than, that at which the drum rotates. As a result, as they are carried by the 10 rotation of the drum, the filter plugs are caused to roll relative to the drum surface, slowly, in a direction opposite that of the rotation of the drum. The speed differential is selected to be such that each filter plug is caused to roll backward one drum groove, and therefore 15 to roll over one complete set of flute forming elements, before being released by the drum. In this manner, if four flute forming elements are located between each two drum grooves, each filter plug is provided with four peripheral flutes. 20 Because the heated formers are disposed on the drum or drums which transport the filter plugs, there is either no relative motion between the formers and the filter plugs during deformation of the latter, or only very slow relative motion between them. This assures 25 that the filter plugs remain in contact with the heated forming elements sufficiently long to be shaped properly. This is particularly true in the case of the first and second preferred embodiments, in which the formers them¬ selves carry the filter plugs. The larger the circum- 30. ference of the drum is, the more formers can be disposed on it, and the more filter plugs can be processed per minute. By making the drum large.enough, i.e. providing enough formers on it, as'high a speed as desired can be achieved. ■■'-
35 BRIEF DESCRIPTION OF THE FIGURES
The above and other objects and advantages of the present invention, as well as certain currently
- preferred manners of attaining them, will be more fully understood and appreciated from the following detailed description of the preferred embodiments, understood in conjunction with the accompanying Figures, in which like parts are indicated by like reference characters through¬ out.
Figure 1 is an isometric view of one preferred embodiment of apparatus constructed according to the principles of the present invention. Figure 2 is a perspective view of a detail of the embodiment of Figure 1.
Figure 3 is a. schematic" side view of another detail of the embodiment of Figure 1.
Figure 4 is a schematic side view showing the essential features of a second preferred embodiment.
Figure 5 is a schematic side view of' a third preferred embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in Figure 1, one preferred embodiment of apparatus for carrying out the method of the invention is a free-standing unit 10. The article-forming apparatus proper is mounted on a vertical frame or panel 12 supported on a table 14. A vacuum fan 16 to provide vacuum suction for a purpose explained below, a-control box 18 and a main drive electric motor 20 to power the apparatus and the vacuum fan 16 are also provided. The apparatus also includes a hopper drum 22, two heated drums 24, 26 carrying formers 28, and a final transfer drum 30, all mounted on panel 12 for rotation about respective horizontal axes by motor 20 via a drive belt 32 and a conventional system of gears 34 (not shown in detail).
Filter plugs 36 of cigarette smoke filter material, e.g. cellulose acetate, are stored in a hopper 38, from which they are dispensed one at a time to the hopper drum 22. A jam detector (not shown) of conventional design is provided on the hopper drum 22 to halt the operation of the filter feed in the event that "a filter
C
plug 36 becomes stuck in the hopper 38. The hopper drum 22 has grooves or flutes parallel to its axis disposed around its peripheral surface to receive the filter plugs 36, which are retained in the grooves by means of vacuum suction applied in a known manner by the vacuum fan 16 from the' interior of the hopper drum 22 via small apertures (not shown) provided in the grooves for that purpose. Vacuum suction is similarly used to retain the filter plugs 36 in place on the other drums 24, 26 and 30.
The hopper drum 22 carries filter plugs 36 to point A, where they are transferred to the first heated drum 24. This transfer is preferably effected by simul¬ taneously terminating the vacuum suction holding the filter plug 36 on the hopper drum 22 and applying vacuum suction to cause it to adhere to drum 24. Methods of controlling the vacuum suction to achieve this purpose are well known to those skilled in the art.
The heated drums 24, 26 are each provided in the embodiment shown ith forty flute formers 28, one of which is shown more clearly in Figure 2. (It will be understood that the number of formers can be varied according to convenience. ) As can be seen from the Figures and as will be explained below, each flute former 28 defines a bed on which -a filter plug 36 can be received, when each filter plug 36 reaches point A, it is released by the hopper drum 22 and received on the bed defined by one of the flute formers 28 of the first heated drum 24. As the drum 24 rotates, one side of the filter plug 36 is shaped by contact with the heated former 28.
The filter plug 36 is carried by the first heated drum 24 to point B," where it is transferred in the manner described above to a flute former 28 on the second heated drum 26. The latter shapes the other side of the filter plug 36 while transporting it to point C and then transfers it to the final transfer drum 30, which releases the flute filter plug 36 at point D. A conveyor belt
A L
•_?ι
(not shown) or other conventional means can be provided at point D to receive the filter plug 36 and take it to the next work station. These transfers are effected in the same manner as that from hopper drum 22 to drum 24.. First and second adjustable endless pressure belts 40, 42 are mounted on rollers 44a-d and 46a-d, respectively. As can be seen from the Figures, belts 40, 42 follow a portion of the peripheral surface of heated drum 24, 26, respectively, and press each filter plug 36 borne by the drums 24, 26 against the flute former 28 carrying it. The pressure exerted on the filter plugs 36 by belts 40, 42 can be- adjusted by means of pressure rollers 58 (shown schematically in Figure 3), which take up slack in the belt 40, 42. In addition, clamp rollers 48, 50 are mounted on panel 12 by means of shafts 52 and 54, and are spring biased rotatably* around the axes of the shafts 52 and 54 in such a manner as to clamp the belts 40 and 42 against drive rollers 44d. and 46d to ensure correct belt speed. The amount of the spring biasing is adjust- able by conventional means (indicated schematically at 56 in Figure 3).
The flute formers 28 have the structure shown in Figure 2. Each flute former 28 comprises a heat resistant ceramic insert 60, which can for example be alumina ceramic, and which is received in a recess 62 in the periphery.of the heated drum 24 or 26. The ceramic insert 60 has a generally T-shaped cross-section, the cross-piece of the T being received in the recess 62. The free end of the stem of the T is concave and serves as a bed to receive the filter plug 36, as indicated in
Figure 2. Clamps (not shown) made of electrically, resistant material and screws (not shown) are used to secure the inserts 60 to the drums 24 and 26.
In the preferred embodiment shown in Figures 1-3 the filter plugs 36 are 4-up 108's, i.e. filter plugs 108 millimeters in length which will each be cut into four cigarette filters of 27 millimeters length. In this embodiment, the flutes to be formed, are longitudinal and
11 ~-" - - -■ .... __ extend part of the way along the length of the filter ' from one end thereof.
When a filter rod 36 is placed on the former 28, four straight axial grooves or flutes are formed in one side of it by heated flute forming elements 66, which each comprise a length of, for example, ni-chrome wire bent into the shape of the flute to be made. The number and placement of the flute forming elements 66, as well as their shape, can be varied as needed. The pieces of ni-chrome flute forming elements wire 66 are soldered to lengths 68 of larger diameter copper wire in such a manner as to connect the four ni-chrome wires 66 of each former 28 with each other in series. The copper wires 68 are connected to those of the other flute formers 28 of the drum 24 or 26 by clamps 64 (one shown in Figure 2), made of an electrically conductive material, such that all the ni-chrome wires.66 on a single drum are connected in series, as indicated in Figure 3.
The design described above for the formers 28 could be simplified by replacing the copper wires 68 and the ni-chrome wire 66 with wire of a single thickness and material, for example., ni-chrome. It has been found in practice, however, that this arrangement is much less satisfactory than that' shown in Figure 2, because bending the ni-chrome wire to form it.into the desired shape
-creates constrictions- in it. . The constrictions, having smaller cross-sections than the remaining portions of the wire, are regions of relatively high resistance. The ohmic heating produced in the bends is therefore consider- ably greater than that produced in the remaining portion of the length of the wires. This results in the formation of unsatisfactory flutes in the filter plugs 36. The structure shown in Figure 2 avoids this problem.
The use of two types of wire having different diameters has an additional advantage. Since the copper wire, in addition to having a larger diameter than that of the ni-chrome wire 66, also has a lower resistivity than the latter, it will be apparent that the voltage
drop per unit length of the copper wire 68 will be substan¬ tially lower than that occurring in the ni-chrome wires 66. The heat generated per unit length of the ni-chrome wires 66 will accordingly be substantially greater than that produced per unit length of the copper wires 68.
The heat is concentrated in the areas where it is useful, that is, in the areas where the flutes are to be formed. The design shown in Figure 2 thus reduces the power consumption of the apparatus of the invention. The flute forming elements 66 are heated, as noted, by the passage of electric current through them. The means by which the current is" supplied to them is shown in Figure 3. (For the sake of clarity. Figure 3 shows only eleven formers 28, rather than the actual number of about forty. )
The drums 24 and 26 each comprise an' insulative body 70 in whose peripheral surface the recesses 62 receiving the ceramic inserts 60 are defined. Two annular conductive slip rings 72 and 74 are disposed in and concentric with the insulative body 70 and are spaced apart radially by an annular region 76 of insulative material. Two ni-chrome wires 78 and 80 electrically connect the two ends of the series circuit loop comprising the flute forming elements 66 to slip rings 72 and 74, respectively. Electrical power is supplied to the flute forming elements 66 by means of a power line 82 and is connected to two conductive brushes 84 and 86, which -respectively connect the conductors of the power line 82 to slip rings 72 and 74. This arrangement provides current to the flute forming elements 66 to heat them.
The control box 18 is preferably provided with first and second meters 88 and 90, which respectively indicate the currents flowing at any instant through the flute forming elements 66 of the first and of the second heated drums 24 and 26 (These two currents can preferably be controlled independently. ) A vacuum gauge 92 is also provided, for example, mounted on the vertical panel 12, to indicate the strength of the vacuum suction used to
retain the filter plugs 36 in the grooves of the drums 22, 24, 26 and 30. In addition, a digital speed gauge 94 and a production counter 96 are provided to" indicate, respec¬ tively, the number of filter plugs being processed per minute and the cumulative production since the beginning of the shift.
In operation, a filter plug 36 to be shaped is fed from the hopper 38 to the hopper drum 22, which transfers it to the first heated drum 24. Drum 24 carries the filter plug 36 from point A to point B as indicated in Figure 1, and while carrying it forms four flutes in one side of it (see Figure 2). The filter plug 36 is then transferred at point B to the second heated drum 26, which forms an additional four flutes in the other side of the filter plug 36 while carrying it to point C, where it is' passed to the final transfer drum 30. The filter plug 36 is then carried to point D and released by drum 30 to be taken to the next work station.
It has been found that if all the flute forming elements 66 are the. same diameter, the first four flutes formed in each filter plug 36 are slightly larger than the. last four to be formed. The cause for this is believed to be that, during the formation of the first four flutes, most of the slack in the paper wrap is removed, causing a certain amount of shrinkage. -As' a result, when the last -four flutes are made, the skin of the filter plug is tauter and therefore more difficult to deform than previ¬ ously.
In order to overcome this problem, it is preferred that the flute forming elements 66 used to form the first four flutes.should be slightly smaller in diameter than those used to make the last four flutes. It has been found especially suitable for the ni-chrome wires 66 of the flute formers 28 on the first drum 24 to be, for example, No. 20 gauge wire, and the ni-chrome wires 66 of the formers 28 of the second drum 26 to be, for example, No. 18 gauge wire. It.has been found that this arrange¬ ment compensates for the shrinkage of the filter plug
OMPI
skin and results.in the formation of flutes of equal size.
Up to 2,800 filter plugs per minute can be shaped using the double drum apparatus 10 described above. Since each filter plug is subsequently cut into .from two to six filters (four in the embodiment shown), it will be clear that the apparatus described herein is capable of processing filters at least as fast as a
- cigarette maker can produce cigarettes. Figure 4 shows another preferred embodiment of the invention, in which only one heated drum 24 is used in place of the two such drums 24', 26 employed in the embodiment of Figure 1.
In the embodiment of Figure 4, both sides of each filter plug 36 are shaped on the single heated drum- 24, which is identical in structure to the heated drum 24 described above and hence will not be described in detail. Two pressure belts 40, 42 are arranged adjacent the periphery of drum 24 to press the filter plugs 36 against the flute forming elements 66. Pressure belts 40 and 42 are as described above, except that in the embodiment of Figure 4 they are both adjacent the same heated drum 24. A kick-out mechanism in the form of a roll block 98 is positioned adjacent drum 24 between pressure belts 40 and 42. The end of the roll block 98 facing, the oncoming -stream of filter plugs 36 has a flange 100 extending toward the drum 24, the purpose of which is explained below.
The filter plugs 36 are supplied to drum 24 by the hopper drum (not shown in Figure 4). Each filter plug 36 is received on a former 28 and held there by vacuum suction, as in the embodiment of Figure 1. As the drum 24 rotates counterclockwise (in the view of Figure 4) to carry the filter plug 36 to point E, the flute forming elements 66 it rests on. form four flutes in one side of it. At point E, the filter plug 36 strikes flange 100 and is forced thereby off the flute former 28. This
- process can be facilitated by deactivating the vacuum
suction applied to filter plug 36 when the filter plug 36 reaches point E.
The side of the roll block 98 facing the drum 24 is uniformly spaced from the surface of the drum 24 a distance equal to the diameter of the filter plugs 36. The roll block 98 therefore causes the filter plug 36 to roll along the drum surface after being knocked off the former 28 by the flange 100. The filter plug 36 is rolled in this manner onto the next flute former 28 (counting clockwise in Figure 4), from which the roll block flange 100 has in the meantime ejected the filter plug 36 that previously occupied it.
In this embodiment the spacing between adjacent formers 28 is such that each filter plug 36 is rotated through a total angle equal to an odd number of half turns in being moved from one flute former 28 to the next by the roll block 98. The .side of the' filter plug 36 that has already been fluted while moving to point E now contacts the pressure belt 40 as the filter plug 36 is moved by the drum's rotation counterclockwise from point F, and the other side of the filter plug 36 is shaped. The filter plug 36 is then transferred to a final transfer drum (not shown in Figure 4), which releases it for conveyance to the next work station, as -in the embodiment of Figure 1. - ■ '
A third preferred embodiment of the invention is shown schematically in Figure 5. In this embodiment, as in that of Figure 4, a single heated drum 102 is used. The drum 102 has a relatively large number, for example, forty, grooves 104 provided equally spaced apart its periphery. (For the sake of clarity, only ten such grooves 104 are actually shown in Figure -5 ) In this embodiment the formers 28 each comprise four electrically heated ni-chrome wires 106a, 106b mounted in a ceramic insert 108 provided in a recess.110 in the drum periphery. Each ni-chrome wire is preferably connected to a current source by copper or other low-resistance wires in the manner shown in Figures 2 and 3. One such former 28 is
f OM
provided between each two of the drum grooves 104, the two forward wires' 106a of each former 28 preferably being No. 20 gauge wire and the two rearward wires 106b being No. 18 gauge wire for the reasons explained above in connection with the embodiment of Figures 1-3.
The hopper drum 22 and the off-take drum or final transfer drum 30 are both located adjacent the heated drum 102. Both are substantially as described in connection with the embodiment of Figures 1-3 and there- fore will not be described again.
A single pressure belt 112 is provided adja"cent the drum 102. The belt is mounted on several rollers, of which two rollers 114a and 114e are shown, and is wrapped around approximately 300° of the periphery of the drum 102, A device (not shown in Figure 5 but like that shown in Figure 3). is provided to take up slack in the belt 112, and to adjust the pressure the belt 112 exerts on the filter plugs 36. The belt 112 is driven at a speed slightly different from the speed of rotation of the drum 102.
The filter rods 36 are fed to the drum 102 by the hopper drum 22, as in the embodiments described above. Each filter plug 36 is received in a respective groove 104, where it is held by vacuum suction. As the drum 102 rotates, the slight speed differential between it and the belt 112 causes the filter plugs 36 to roll along the surface of the drum 102. Preferably, the belt 112 moves more slowly than the drum 102, causing the filter plugs 36 to roll backward relative to the drum surface. This relative motion of the filter plugs 36 and the drum 102 causes each filter plug 36. to roll backward over a former 28. The speed differential is such that each filter plug 36 rolls' backward one drum groove 104, in the process rolling over four of the ni-chrome wires 106a, 106b while being carried by the drum 102. As a result, each filter plug 36 has four equally spaced longitudinal flutes 120 at the time it is transferred from the heated drum 102 to the off-take drum 30.
It will, be appreciated that the straight ni-chrom wires shown and described with reference to the preferred embodiments could be replaced with flute forming elements having, any desired shape. In addition, formers of several different shapes could be provided on one drum. In the embodiment of Figure 5, for example, formers of n different shapes could be disposed in succession on the drum peripher one former between each two adjacent drum grooves. In this case, the difference in speed between the drum periphery and the belt 112 would be such as to roll each filter plug 36 a distance of n grooves 104 along the drum sur ce.
Those skilled in the art will appreciate that instead of using a free standing machine, the method of invention could be practised by incorporating any of the embodiments described above in a machine that processes the fluted filter plugs further. For example, the final transfer drum could be employed to deliver the filter plugs directly to a cutter to be cut into doubles, i.e. segments comprising two filters end to end. The doubles would then be attached to tobacco rods and severed to yield finished cigarettes.
In addition, instead of disposing the formers on the periphery of one or more drums, they could be supported for transpόrtion along•any desired predetermined path, provided only that enough pressure can be maintained on the filter plugs while in contact with the formers to -ensure that the desired deformation occurs-
The specific embodiments described herein are merely illustrative of the present invention, the true scope of which is set forth in and determined solely by the appended claims.
Claims
1. An apparatus for shaping a cylindrical object, comprising: transport means for transporting a cylin- drical object "along a first predetermined path; a plurality of heated former means disposed on said transport means, for thermally deforming a portion of the cylindrical object to impart a predetermined desired shape thereto; "and . means for maintaining the cylindrical object in operative contact with at least one of said former means for a sufficient length of time to cause said predetermined shape to be imparted to the cylindrical object while said transport means is transporting the cylindrical object along said first predetermined path.
2. The apparatus .of claim 1, wherein said maintaining means includes .adjustable endless belt means for pressing the cylindrical- object against at least one of said former means with an adjustable pressure.
3. The apparatus of claim 1, wherein each said former means comprises a conductive element heated by the passage therethrough of an electric current.
4. The apparatus of cl?im 3, wherein said •conductive element includes a high-resistance portion having a shape to be imparted to' the cylindrical object, and a low-resistance portion having a lower electrical resistance per unit length than said high-resistance . portion.
5. The apparatus of claim 4, wherein said high-resistance portion comprises a ni-chrome wire portion having a first cross-sectional area and a first resistivity, and wherein said low-resistance portion comprises a copper wire portion having a second cross-sectional area greater than said first cross-sectional area and having a second resistivity lower than said first resistivity.
6. The apparatus of claim 1, further comprising second transport means having a plurality of heated former means disposed on it, •said second transport means being for receiving the cylindrical object from said first transport means and for transporting it along a second predetermined path; said maintaining means further being for maintaining the cylindrical object in operative contact with at least one of said former means disposed on said second transport means for imparting a desired shape thereto.
7. The apparatus of claim 6, wherein said first and second transport means are arranged to enable a cylindrical object to be transferred directly from one said former means disposed on said first transport means to one said former means disposed on said second transport means, in such a manner that the cylindrical object is deformed on one side while being carried by said first transport means and on another side while being carried by said second transport means.
8. The apparatus of claim 5, wherein each said former means includes conductive element heated by the passage therethrough of an electric current, said conductive element including a wire having a shape for forming a flute in the cylindrical object; said wires of said former means of said first transport means being smaller in diameter than said wires of said former means of said second transport means."
9. The apparatus of claim 6, wherein the magnitudes of-said electrical currents flowing through said former means of said first and second transport means, respectively, are controllable independently of each other.
10. The apparatus of claim 6, wherein each said transport means comprises a respective rotary drum having a respective said former means disposed on the periphery thereof.
.
11. The apparatus of claim 1, further comprising kick-out means located adjacent said transport means for removing a cylindrical object from one said former means after it has been deformed thereby on one side, and placing it in a second said former means to be deformed on its other side.
12. The apparatus of claim 11, wherein said kick-out means comprises a stationary roll block spaced from said transport means by a distance approximately equal to the diameter of the cylindrical object.
13. The apparatus of claim 11, wherein said transport means comprises a rotary drum having said former means disposed on its periphery.
14. The apparatus of claim 1, wherein said first transport means is a drum having a plurality of grooves defined in its'peripheral surface to receive cylindrical objects, and wherein each said former means is disposed between a respective pair of adjacent ones of said grooves.
15. The apparatus of claim 14, wherein all said former means are identical.
16. The apparatus of claim 14, wherein each said former means comprises four wires, each said wire having a shape for forming a single flute in a cylin¬ drical object.
17. A method for shaping a cylindrical object, comprising the steps of: moving a cylindrical object along a first predetermined path while maintaining it in operative contact with, and stationary relative to, a •first heated former to impart a predetermined desired shape to one portion of the cylindrical object; and then moving the cylindrical object along a second predetermined path while maintaining it in operative contact with, and stationary relative to, a second heated former to impart a predetermined desired shape to another portion of the cylindrical object.
18. The method of claim 17, wherein said first and second paths are circular arcs that lie on a single circle; and further comprising the step of removing the cylindrical object from said first former, and moving it along said circle to said second former after it has been shaped by said first former and before it is shaped by said second former.
19. , The method of claim 17, wherein said first and second formers are supported on first and second rotatable drums for motion along said first and second paths, respectively; and further comprising t-όe step of transferring the cylindrical object from said first former directly to said second former.
20. A method for shaping a cylindrical object, comprising the steps of: moving a cylindrical object along a predetermined path at a first speed; simultaneously moving a heated former along said-path at a second speed different from said first speed; and, while moving the cylindrical object, bringing it into operative contact with said heated former to impart a desired shape to the cylindrical object. *. '
21. The method of claim 20, wherein said second speed is greater than said first speed.
22. The method of claim 20, wherein said path is a circular one, and wherein said formers are supported on a drum for movement along said path by rotation of said drum, and wherein the cylindrical object is rolled along the peripheral surface of said drum by an endless belt moving at a speed different from that of said drum to bring the. cylindrical object into operative contact with said heated former.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR8207897A BR8207897A (en) | 1981-09-30 | 1982-09-29 | PROCESS AND APPARATUS FOR THE PRODUCTION OF SMOKING FILTER COMPONENTS |
FI831921A FI831921A0 (en) | 1981-09-30 | 1983-05-30 | REAR FORMING OIL FRAMSTAELLNING AV COMPONENT FOR CIGARETTE FILTER |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30711581A | 1981-09-30 | 1981-09-30 | |
US307,115 | 1981-09-30 | ||
US338,846820112 | 1982-01-12 | ||
US06/338,846 US4492238A (en) | 1981-09-30 | 1982-01-12 | Method and apparatus for production of smoke filter components |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1983001181A1 true WO1983001181A1 (en) | 1983-04-14 |
Family
ID=26975548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1982/001358 WO1983001181A1 (en) | 1981-09-30 | 1982-09-29 | Method and apparatus for production of smoke filter components |
Country Status (11)
Country | Link |
---|---|
US (1) | US4492238A (en) |
EP (1) | EP0076641B1 (en) |
JP (1) | JPS58501533A (en) |
AU (1) | AU8886082A (en) |
BR (1) | BR8207897A (en) |
CA (1) | CA1191066A (en) |
DE (1) | DE3270877D1 (en) |
FI (1) | FI831921A0 (en) |
MY (1) | MY8700906A (en) |
PH (1) | PH20647A (en) |
WO (1) | WO1983001181A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757371A (en) * | 1985-02-22 | 1988-07-12 | Mitsubishi Denki Kabushiki Kaisha | Still picture transmission apparatus |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795411A (en) * | 1984-03-01 | 1989-01-03 | Philip Morris Incorporated | Apparatus for forming annular grooves or slits in rod-shaped articles |
US4883449A (en) * | 1984-07-18 | 1989-11-28 | Brown & Williamson Tobacco Corporation | Device for making grooves in cigarette filters |
JPS6128376A (en) * | 1984-07-20 | 1986-02-08 | 日本たばこ産業株式会社 | Apparatus for producing tobacco with filter plug |
AU711143B2 (en) * | 1994-07-26 | 1999-10-07 | Nurture, Inc. | Removal of undesirables in liquid or gas |
US5713095A (en) * | 1996-05-30 | 1998-02-03 | Incredicoat, Inc. | Bifurcated paint roller and painting method |
US7434585B2 (en) * | 2003-11-13 | 2008-10-14 | R. J. Reynolds Tobacco Company | Equipment and methods for manufacturing cigarettes |
US7296578B2 (en) * | 2004-03-04 | 2007-11-20 | R.J. Reynolds Tobacco Company | Equipment and methods for manufacturing cigarettes |
US7481757B2 (en) * | 2006-12-28 | 2009-01-27 | Philip Morris Usa Inc. | Tube rolling device |
US9623988B2 (en) | 2010-03-26 | 2017-04-18 | Philip Morris Usa Inc. | High speed poucher |
GB201115157D0 (en) | 2011-09-02 | 2011-10-19 | British American Tobacco Co | Manufacturing grooved smoking rods |
CN103358449B (en) * | 2012-04-10 | 2015-07-15 | 大亚科技股份有限公司 | Trench passive pressing roller device for filter stick |
TWI637696B (en) * | 2013-01-31 | 2018-10-11 | 菲利浦莫里斯製品股份有限公司 | Apparatus and method for wrapping a sheet of wrapping material around a rod-shaped article or around a plurality of linearly arranged substantially cylindrical segments; and rolling device for use in the apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4149546A (en) * | 1976-03-17 | 1979-04-17 | British-American Tobacco Company Limited | Production of tobacco-smoke filters |
Family Cites Families (160)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1606058A (en) * | 1926-11-09 | Machine for slotting- telephone ahd telegraph poles | ||
USRE22478E (en) | 1944-05-09 | Method of and apparatus for manu | ||
CA728467A (en) | 1966-02-22 | Ramdohr Hermann | Apparatus for production of filter cigarettes | |
US2704520A (en) * | 1955-03-22 | Mechanism for forming indentations in | ||
US807420A (en) * | 1904-01-26 | 1905-12-12 | Alexander W Copland | Dough-cutter. |
US1357665A (en) * | 1920-05-28 | 1920-11-02 | Wrigley William Jun Co | Gum sheeting and scoring machine |
GB281236A (en) * | 1926-11-26 | 1928-03-22 | Muller J C & Co | Improvements in and connected with cigarette paper shells |
US1993402A (en) * | 1933-02-20 | 1935-03-05 | Robert J Farrell | Method of making nails |
US2040704A (en) * | 1934-02-01 | 1936-05-12 | Arthur B Modine | Smoking pipe |
GB427450A (en) * | 1934-07-07 | 1935-04-24 | Muller J C & Co | Improvements in or relating to cigarettes |
US2199660A (en) * | 1937-03-08 | 1940-05-07 | Lehon Co | Method of making roofing |
US2221984A (en) * | 1938-04-01 | 1940-11-19 | Boston Woven Hose & Rubber Com | Rubberized belting and method of making the same |
US2307906A (en) * | 1939-09-23 | 1943-01-12 | Ahne Otto | Apparatus for forming filter plugs adapted to be introduced into cigarette paper tubes |
US2335710A (en) * | 1942-12-14 | 1943-11-30 | Ray F Townsend | Bullet core stripper machine |
US2464301A (en) * | 1943-12-18 | 1949-03-15 | American Viscose Corp | Textile fibrous product |
US2471447A (en) * | 1944-09-02 | 1949-05-31 | Setter Bros Inc | Web feeding and cutting machine |
US2628540A (en) * | 1946-02-26 | 1953-02-17 | Keyes Fibre Co | Pulp molding machine and process |
US2456922A (en) * | 1946-03-21 | 1948-12-21 | Mohawk Carpet Mills Inc | Fabric |
US2456923A (en) * | 1946-04-12 | 1948-12-21 | Mohawk Carpet Mills Inc | Method of making fabrics |
BE504075A (en) * | 1950-06-19 | |||
US2694399A (en) * | 1950-09-12 | 1954-11-16 | Allen J Parker | Cigarette perforating device |
US2693221A (en) * | 1951-06-22 | 1954-11-02 | Briggs Mfg Co | Method and apparatus for making laminated materials |
DE1632183U (en) | 1951-10-25 | 1951-12-13 | Ernst Schlaudraft | IRRIGATOR. |
US2847086A (en) | 1953-08-04 | 1958-08-12 | Muller Paul Adolf | Filtering material |
US2821200A (en) * | 1954-02-05 | 1958-01-28 | Korber Kurt | Apparatus for manufacturing filter mouthpiece cigarettes |
US2907365A (en) * | 1954-04-13 | 1959-10-06 | Us Rubber Co | Nonskid tire tread and method and means for making same |
US2904049A (en) * | 1954-06-22 | 1959-09-15 | Koerber & Co Kg | Machine for manufacturing filter mouthpiece cigarettes |
US2723937A (en) * | 1954-07-22 | 1955-11-15 | Mohawk Carpet Mills Inc | Method of producing embossed pile fabric |
US2700205A (en) * | 1954-07-22 | 1955-01-25 | Mohawk Carpet Mills Inc | Method of making embossed pile fabrics |
US2964441A (en) * | 1954-08-23 | 1960-12-13 | Allen Ind | Method of making a fabric |
US2803188A (en) * | 1954-09-28 | 1957-08-20 | Wood Conversion Co | Production of embossed porous coated porous fiberboard |
US3238852A (en) * | 1954-10-05 | 1966-03-08 | Olin Mathieson | Method and apparatus for making filters |
US3094450A (en) * | 1955-01-26 | 1963-06-18 | Davidson Glenn | Method of making a cylindrical filter element for cigarette tips |
GB801391A (en) | 1955-03-24 | 1958-09-10 | Mueller Paul A | Method of and apparatus for producing creped flat material |
CH331197A (en) | 1955-04-05 | 1958-07-15 | Mueller Paul Adolf Dipl Ing | Mechanical device for the production of an endless filter rod for cigarettes |
US2865047A (en) * | 1955-11-03 | 1958-12-23 | American Biltrite Rubber Compa | Process and apparatus for molding mats |
US3017304A (en) * | 1956-05-24 | 1962-01-16 | Personal Products Corp | Absorbent fibrous structure and method of production |
BE570241A (en) | 1957-08-10 | |||
US2921614A (en) * | 1957-12-09 | 1960-01-19 | Diamond National Corp | Continuous manufacture of profiled saw-kerfed wooden clothespins |
US2954773A (en) * | 1958-01-23 | 1960-10-04 | Mac Farland Aveyard & Company | Cigarette filters and method of making same |
US3032829A (en) * | 1958-02-11 | 1962-05-08 | Celanese Corp | Processing tow |
GB864247A (en) | 1958-04-16 | 1961-03-29 | Olin Mathieson | Improvements in or relating to cigarettes |
US3045680A (en) * | 1958-09-30 | 1962-07-24 | Millard F Smith | Smoke filtering device |
US3103220A (en) * | 1959-06-12 | 1963-09-10 | Celanese Corp | Filter cigarettes |
CH383239A (en) * | 1959-09-22 | 1964-10-15 | Mueller Paul A | Filter stoppers for cigarettes and methods of making the same |
GB898760A (en) | 1960-02-11 | 1962-06-14 | Tabak & Ind Masch | Apparatus for the application of connection slips to filter tip cigarette groups |
GB912979A (en) * | 1959-12-28 | 1962-12-12 | Kurt Koerber | Apparatus for producing filter rods, filter cigarettes and the like |
DE1155702B (en) * | 1960-02-04 | 1963-10-10 | Hauni Werke Koerber & Co Kg | Revolving device in filter cigarette machines for wrapping connecting plates |
US3150416A (en) * | 1960-07-29 | 1964-09-29 | Kendall & Co | Method and apparatus for producing apertured non-woven fabrics |
US3164157A (en) * | 1961-02-15 | 1965-01-05 | Macfarland Aveyard & Company | Filter type cigarette and method of making same |
DE1188495B (en) * | 1961-06-12 | 1965-03-04 | Hauni Werke Koerber & Co Kg | Device for wrapping glued connecting sheets around the joints of groups formed from cigarettes and filter stoppers or from other rod-shaped objects |
US3240213A (en) * | 1962-01-25 | 1966-03-15 | Achilles Corp | Cigarette |
US3179108A (en) | 1963-02-15 | 1965-04-20 | Johnson & Johnson | Applicator |
US3353329A (en) * | 1964-08-11 | 1967-11-21 | Cloud Machine Corp | Method of and apparatus for packaging elongated articles such as nipples |
US3323961A (en) * | 1963-10-10 | 1967-06-06 | Eastman Kodak Co | Method and apparatus for forming rodshaped fibrous elements |
US3304943A (en) * | 1964-03-06 | 1967-02-21 | Roland E Gunther | Cigarettes with smoke coolers |
US3336928A (en) * | 1964-05-07 | 1967-08-22 | James W Haley | Smoking article |
US3323525A (en) * | 1964-07-14 | 1967-06-06 | Achilles Corp | Cigarette holder |
US3255494A (en) * | 1964-07-20 | 1966-06-14 | Johnson & Johnson | Method and apparatus for making applicator |
US3324862A (en) * | 1964-08-31 | 1967-06-13 | Simone Bessie De | Smoking device |
US3348552A (en) | 1964-11-09 | 1967-10-24 | American Mach & Foundry | Filter tipping device |
US3379814A (en) * | 1965-03-30 | 1968-04-23 | Mobil Oil Corp | Scoring thermoplastic materials |
US3308833A (en) * | 1965-06-10 | 1967-03-14 | American Mach & Foundry | Machine for making cigarettes |
US3390684A (en) * | 1965-08-09 | 1968-07-02 | Armstead B. Hudnell | Cigarette with controllable mildness |
US3496043A (en) * | 1966-04-07 | 1970-02-17 | Robert O Ragan | Method of manufacturing an embossed laminated foam |
US3477108A (en) * | 1966-05-11 | 1969-11-11 | John F Stokes | House prefabricating machine |
GB1146206A (en) * | 1966-05-20 | 1969-03-19 | Hauni Werke Koerber & Co Kg | Apparatus for producing rod-like articles |
US3470884A (en) * | 1967-01-05 | 1969-10-07 | Reynolds Tobacco Co R | Method for making filter tip cigarettes |
US3484582A (en) * | 1967-01-05 | 1969-12-16 | Reynolds Tobacco Co R | Apparatus for heating sheet material |
US3428050A (en) * | 1967-02-21 | 1969-02-18 | Walter R Kandel | Filter cigarette of adjustable filter capacity |
US3490461A (en) * | 1967-04-20 | 1970-01-20 | Philip Morris Inc | Cigarette ventilation |
US3493998A (en) * | 1967-06-02 | 1970-02-10 | Flexible Plastic Straw Corp | Machine for forming a flexible area in tubular plastic resinous drinking straws |
US3552399A (en) * | 1967-09-15 | 1971-01-05 | Alfred Andreas | Air-smoke homogenizing filter |
US3495434A (en) * | 1967-10-09 | 1970-02-17 | Arthur A Lavine | Method of scoring |
US3483873A (en) * | 1968-02-14 | 1969-12-16 | Hauni Werke Koerber & Co Kg | Apparatus for making holes in tobacco rods or the like |
US3464421A (en) * | 1968-02-14 | 1969-09-02 | Reynolds Tobacco Co R | Integral inline granular filter cigarette machine |
US3533416A (en) * | 1968-05-08 | 1970-10-13 | American Filtrona Corp | Tobacco smoke filter |
US3805801A (en) | 1969-04-30 | 1974-04-23 | American Filtrona Corp | Tobacco smoke filter |
US3703429A (en) * | 1968-05-08 | 1972-11-21 | American Filtrona Corp | Apparatus for making filter means |
US3774508A (en) * | 1968-05-08 | 1973-11-27 | American Filtrona Corp | Apparatus for making filter means |
US3810477A (en) | 1968-05-08 | 1974-05-14 | American Filtrona Corp | Tobacco smoke filter |
GB1251662A (en) | 1968-05-15 | 1971-10-27 | ||
GB1264894A (en) | 1968-06-17 | 1972-02-23 | ||
US3538210A (en) * | 1968-07-24 | 1970-11-03 | Philip Morris Inc | Method for forming plastic tubing |
US3579623A (en) * | 1968-07-24 | 1971-05-18 | Philip Morris Inc | Forming filled continuous plastic rod such as plastic cigarette filter rod filled with a tow of cellulose acetate |
US3733241A (en) * | 1969-01-03 | 1973-05-15 | Philip Morris Inc | Extruding tow filled mouthpiece rod having serrated inner surfaces clenching the tow |
US3607512A (en) * | 1969-01-03 | 1971-09-21 | Philip Morris Inc | Extruding tow filled mouthpiece rod having serrated inner surfaces clenching the tow |
US3556907A (en) * | 1969-01-23 | 1971-01-19 | Paper Converting Machine Co | Machine for producing laminated embossed webs |
US3599646A (en) * | 1969-04-30 | 1971-08-17 | American Filtrona Corp | Cigarette filter |
US3596663A (en) * | 1969-05-29 | 1971-08-03 | Lorillard Co P | Ventilated smoking article |
US3685523A (en) * | 1969-06-27 | 1972-08-22 | Molins Machine Co Ltd | Tobacco smoke filter |
US3577996A (en) * | 1969-06-30 | 1971-05-11 | Reynolds Tobacco Co R | Tobacco smoke filter |
US3641884A (en) * | 1969-07-07 | 1972-02-15 | Anton Jivoin | Manufacturing flexible drinking straws |
US3684614A (en) * | 1969-08-11 | 1972-08-15 | Jerome H Lemelson | Process for the manufacture of optical display devices |
US3674619A (en) * | 1969-10-13 | 1972-07-04 | Exxon Research Engineering Co | Embossing separator |
IE34551B1 (en) * | 1969-11-07 | 1975-06-11 | Cigarette Components Ltd | Cigarette filter |
US3621851A (en) * | 1969-11-26 | 1971-11-23 | Kata Mfg & Filtering Co | Filter for smoker's article |
IE34766B1 (en) | 1969-12-24 | 1975-08-06 | Cigarette Components Ltd | Tobacco smoke filter |
US3608561A (en) * | 1970-01-15 | 1971-09-28 | H 2 0 Filter Corp The | Extender means for attachment of an auxiliary cigarette filter |
GB1308661A (en) | 1970-02-21 | 1973-02-21 | Cigarette Components Ltd | Device for treating tobacco smoke |
US3577995A (en) * | 1970-03-31 | 1971-05-11 | Reynolds Tobacco Co R | Filter |
US3637447A (en) * | 1970-06-10 | 1972-01-25 | American Filtrona Corp | Method of making filter means by crimping and overwrapping a tubular element |
USRE29674E (en) | 1970-07-17 | 1978-06-20 | Molins Limited | Preparing cigarette filters |
GB1299805A (en) * | 1970-07-17 | 1972-12-13 | Molins Ltd | Improvements relating to cigarette filters |
US3733246A (en) * | 1970-07-23 | 1973-05-15 | Philip Morris Inc | Forming filled continuous plastic rod such as plastic cigarette filter rod filled with a tow of cellulose acetate |
US3648711A (en) * | 1970-08-11 | 1972-03-14 | American Filtrona Corp | Tobacco smoke filter |
US3702118A (en) * | 1970-09-08 | 1972-11-07 | Katuhisa Terasaki | Cigarette holder with tar-collecting insert |
US3788330A (en) * | 1970-09-25 | 1974-01-29 | D Griffith | Filter means |
US3768489A (en) * | 1970-10-05 | 1973-10-30 | Eastman Kodak Co | Tobacco smoke filter |
GB1369437A (en) * | 1970-11-09 | 1974-10-09 | Molins Ltd | Cigarette filters |
US3701353A (en) * | 1970-12-09 | 1972-10-31 | Arthur R Pasquine | Cigarette perforating apparatus |
US3805682A (en) | 1970-12-24 | 1974-04-23 | American Filtrona Corp | Method of making tobacco smoke filters |
GB1347081A (en) | 1971-03-12 | 1974-02-13 | British American Tobacco Co | Production of tobacco-smoke filters |
US3703430A (en) * | 1971-03-12 | 1972-11-21 | Joseph L Rich | Apparatus for fabricating plastic cushioning and insulating material |
US4007745A (en) | 1971-03-23 | 1977-02-15 | Celanese Corporation | Filter |
GB1336661A (en) | 1971-04-16 | 1973-11-07 | British American Tobacco Co | Tobacco-smoke filters |
US3789855A (en) * | 1971-06-22 | 1974-02-05 | Liggett & Myers Inc | High flavor impact, low smoke yield cigarette mouthpiece |
GB1360611A (en) | 1971-06-30 | 1974-07-17 | Molins Ltd | Cigarette filters |
GB1360612A (en) | 1971-06-30 | 1974-07-17 | Molins Ltd | Cigarette filters |
US3748214A (en) * | 1971-08-16 | 1973-07-24 | Du Pont | Channel structure |
US3865121A (en) | 1971-11-03 | 1975-02-11 | Molins Ltd | Cigarette filters |
US3752165A (en) * | 1971-12-20 | 1973-08-14 | G Harllee | Smoke filter plug and process and cigarette made therefrom |
US3773053A (en) * | 1972-01-24 | 1973-11-20 | Philip Morris Inc | Cigarette with controlled smoking profile |
CH546544A (en) | 1972-05-10 | 1974-03-15 | Celfil Co | EQUIPMENT FOR THE PRODUCTION OF FILTER MATERIAL TRAILS, IN PARTICULAR PAPER TRAILS, FOR CIGARETTE OR TOBACCO PRODUCTS. |
US3817158A (en) | 1972-08-13 | 1974-06-18 | Hauni Werke Koerber & Co Kg | Tubular mouthpiece and method and apparatus for making and attaching the same |
US3958579A (en) | 1972-09-07 | 1976-05-25 | Baker-Alpha Corporation | Cigarette filter |
US3964493A (en) | 1972-09-07 | 1976-06-22 | Baker-Alpha Corporation | Cigarette filter |
US3811451A (en) | 1972-09-11 | 1974-05-21 | American Filtrona Corp | Tobacco smoke filter |
US3826177A (en) | 1972-09-20 | 1974-07-30 | American Filtrona Corp | Apparatus for making filter means |
US3799041A (en) | 1972-12-04 | 1974-03-26 | Liggett & Myers Inc | Apparatus for obtaining rounded filter plugs for cigarettes |
GB1414745A (en) | 1973-02-26 | 1975-11-19 | Cigarette Components Ltd | Tobacco smoke filter |
US3860011A (en) | 1973-08-27 | 1975-01-14 | Liggett & Myers Inc | Hollow filter |
US4024012A (en) | 1973-08-27 | 1977-05-17 | Liggett & Myers Incorporated | Method and apparatus for making a hollow filter and a filter rod |
US4023576A (en) | 1973-11-21 | 1977-05-17 | Liggett & Myers Incorporated | Cigarette mouthpiece for controlling flow |
US3862591A (en) | 1974-01-07 | 1975-01-28 | Champion Int Corp | Method and apparatus for forming hollow paper sticks |
US3985144A (en) | 1974-01-18 | 1976-10-12 | Payne Leslie E | Apparatus for forming cigarette filters |
SE381167B (en) | 1974-03-13 | 1975-12-01 | Svenska Tobaks Ab | FILTER FOR TOBACCO SMOKE |
GB1462726A (en) | 1974-09-19 | 1977-01-26 | Cigarette Components Ltd | Smoke filter process and apparatus |
JPS52123703A (en) | 1975-09-05 | 1977-10-18 | Nippon Paint Co Ltd | Apparatus for producing duplicated printing plate made of thermoplastic resin |
US4022221A (en) | 1975-10-31 | 1977-05-10 | American Filtrona Corporation | Tobacco smoke filter |
US4026306A (en) | 1975-11-06 | 1977-05-31 | American Filtrona Corporation | Tobacco smoke filter |
GB1508084A (en) | 1976-03-17 | 1978-04-19 | British American Tobacco Co | Tobacco-smoke filters |
CH608176A5 (en) | 1976-10-05 | 1978-12-29 | Baumgartner Papiers Sa | |
GB1592549A (en) | 1976-10-06 | 1981-07-08 | British American Tobacco Co | Tobacco-smoke filters |
GB1585862A (en) | 1976-11-19 | 1981-03-11 | British American Tobacco Co | Tobacco-smoke filters |
US4140137A (en) | 1977-06-07 | 1979-02-20 | Philip Morris Incorporated | Adjustable aperture cigarette perforating apparatus |
CA1092931A (en) | 1977-08-05 | 1981-01-06 | David J. Farrar | Ventilated cigarettes |
US4219030A (en) | 1977-08-19 | 1980-08-26 | Liggett Group Inc. | Aeration groove filter |
US4232574A (en) | 1977-08-19 | 1980-11-11 | Liggett Group Inc. | Apparatus and method for providing a cigarette filter with an aeration groove |
US4319589A (en) | 1978-04-07 | 1982-03-16 | Molins Limited | Method and apparatus for perforating rod-like articles |
GB2020158B (en) | 1978-04-21 | 1982-11-24 | Cigarette Components Ltd | Production of tobacco smoke filters |
ZA795207B (en) | 1978-10-19 | 1980-11-26 | British American Tobacco Co | Production of tobacco-smoke filters |
US4256122A (en) | 1979-04-11 | 1981-03-17 | Brown & Williamson Tobacco Corporation | Cigarette filter |
CA1156533A (en) | 1980-05-01 | 1983-11-08 | Henry G. Horsewell | Smoking articles |
GB2078089B (en) | 1980-06-18 | 1983-10-12 | British American Tobacco Co | Filters and a method of producing such filters |
US4324540A (en) | 1980-07-11 | 1982-04-13 | Brown & Williamson Tobacco Corporation | Apparatus for making grooves in tobacco smoke filters |
US4351792A (en) | 1980-07-11 | 1982-09-28 | Brown & Williamson Tobacco Corporation | Apparatus for making grooves in tobacco smoke filters |
US4343319A (en) | 1980-11-28 | 1982-08-10 | Brown & Williamson Tobacco Corporation | Cigarette filter |
US4338956A (en) | 1980-12-05 | 1982-07-13 | Brown & Williamson Tobacco Corporation | Cigarette filter |
DE3105455C2 (en) * | 1981-02-14 | 1985-07-25 | Fabriques de Tabac Réunies S.A., Neuchâtel | Device for embossing open channels in the circumference of rod-shaped, thermally deformable filter sections for smokable articles |
-
1982
- 1982-01-12 US US06/338,846 patent/US4492238A/en not_active Expired - Lifetime
- 1982-09-29 BR BR8207897A patent/BR8207897A/en unknown
- 1982-09-29 AU AU88860/82A patent/AU8886082A/en not_active Abandoned
- 1982-09-29 EP EP82305172A patent/EP0076641B1/en not_active Expired
- 1982-09-29 CA CA000412503A patent/CA1191066A/en not_active Expired
- 1982-09-29 JP JP57503399A patent/JPS58501533A/en active Pending
- 1982-09-29 WO PCT/US1982/001358 patent/WO1983001181A1/en active Application Filing
- 1982-09-29 DE DE8282305172T patent/DE3270877D1/en not_active Expired
- 1982-09-30 PH PH27941A patent/PH20647A/en unknown
-
1983
- 1983-05-30 FI FI831921A patent/FI831921A0/en not_active Application Discontinuation
-
1987
- 1987-12-30 MY MY906/87A patent/MY8700906A/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4149546A (en) * | 1976-03-17 | 1979-04-17 | British-American Tobacco Company Limited | Production of tobacco-smoke filters |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757371A (en) * | 1985-02-22 | 1988-07-12 | Mitsubishi Denki Kabushiki Kaisha | Still picture transmission apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0076641B1 (en) | 1986-04-30 |
DE3270877D1 (en) | 1986-06-05 |
EP0076641A1 (en) | 1983-04-13 |
AU8886082A (en) | 1983-04-14 |
FI831921L (en) | 1983-05-30 |
CA1191066A (en) | 1985-07-30 |
PH20647A (en) | 1987-03-16 |
JPS58501533A (en) | 1983-09-16 |
FI831921A0 (en) | 1983-05-30 |
MY8700906A (en) | 1987-12-31 |
US4492238A (en) | 1985-01-08 |
BR8207897A (en) | 1983-09-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4492238A (en) | Method and apparatus for production of smoke filter components | |
US2952105A (en) | Wrapping device | |
EP2696708B9 (en) | Conveying rod-like articles in the tobacco-processing industry | |
EP2777408A1 (en) | Method and apparatus for assembly of multi-segmented cylindrical products, such as tobacco products | |
JP2006262898A (en) | Apparatus for producing composite filter | |
DE2941097C2 (en) | Method and apparatus for producing one or more annular smoke barriers in rod-shaped tobacco smoke filter components | |
DE2749947C2 (en) | ||
US3269393A (en) | Method of making cigar fillers | |
US3308833A (en) | Machine for making cigarettes | |
JP4354910B2 (en) | Production method of cigarette with filter | |
US4596257A (en) | Method and apparatus for tipping smoking articles | |
EP1516547B1 (en) | Apparatus and method for transferring rod-like articles | |
US3348552A (en) | Filter tipping device | |
US5474091A (en) | Method of producing filter-tipped cigarettes | |
US3985144A (en) | Apparatus for forming cigarette filters | |
US3205899A (en) | Apparatus for making cigar fillers | |
EP0124288B1 (en) | Method and apparatus for aligning oval cigarette filters | |
EP0059041B2 (en) | Apparatus for forming channels in the periphery of filter elements | |
EP0231565B1 (en) | Method and apparatus for tipping smoking articles | |
US4047535A (en) | Method of and apparatus for improving smoking properties of tobacco products | |
EP0124289A1 (en) | Method and apparatus for tipping smoking articles | |
US3148683A (en) | Apparatus for applying filter tips to cigarettes | |
US4177544A (en) | Method of and apparatus for making tampons | |
EP0546471A1 (en) | Method of producing filter-tipped cigarettes of different sizes | |
US20230180820A1 (en) | Apparatus and method for manufacturing a roll of crimped filling material for rod-like articles |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Designated state(s): BR FI JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 831921 Country of ref document: FI |