CN1535628B - Method and device of making nonwoven fabrics for producing filtering bar - Google Patents
Method and device of making nonwoven fabrics for producing filtering bar Download PDFInfo
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- CN1535628B CN1535628B CN200410034246.7A CN200410034246A CN1535628B CN 1535628 B CN1535628 B CN 1535628B CN 200410034246 A CN200410034246 A CN 200410034246A CN 1535628 B CN1535628 B CN 1535628B
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- fiber
- conveyer
- filter
- broken
- breaing
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- 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
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- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Nonwoven Fabrics (AREA)
Abstract
In a process to manufacture cigarette filter tips from elongated extruded fibres, the essentially separated fibres (27) are transported by air towards a conveyer (32). The fibres agglomerate to form a group of fibres, each fibre being in partial point contact with adjacent fibres to form a non-woven fleece resting on the conveyer surface. The fleece is transferred to an outer wrapping strip and then is rolled to form a cylindrical wrapper around the fibres, simultaneously compressing the fibres into a filter. Also claimed is a commensurate manufacturing assembly.
Description
The present invention relates to make a kind of method and apparatus of the nonwoven that when producing the filter stick of cigarette processing industry, uses; Wherein such device comprises that in one first scheme at least one breaks up device; By it, can be with the fabric thrashing of at least a filter-tip material, and comprise a conveyer; But the said fiber of being broken up of shower on it (aufshauern) is so that constitute a nonwoven.Another program of such device comprises that at least two are broken up device, by them, can break up the fiber of at least a filter-tip material, wherein respectively breaks up device one conveying path is set.
One method and a corresponding device thereof of the filter-tip material of using when being prepared in the filter tip of producing the cigarette processing industry are known in GB718332.Wherein, Particle and this particle of producing a kind of material by a cigarette cutting machine are sent in the sett frame of a similar cigarette sett frame; And; This particle is impregnated by a chemical substance, so that prevent a kind of undesirable taste and prevent that this particle from dropping away from the end portion of the good filter tip of corresponding manufacturing.This particle that is cut is transported in the zone of action of a carding roller by a roller; And be transported on the conveyer belt from this roller by this carding roller, gone, from then on risen so that be sent to an other carding roller subsequently; This particle is by an other carding roller or to impact roller broken; Be sent to a normalization structure then, therein, form this filter rod by a wrapper.This particle is by for example paper, and cellulose is that fabric, materials such as artificial material or analog are formed and have a structure of a kind of tobacco of roughly the same chopping.
Because this version of particle will be made the filter tip with uniform properties and be difficult to realize.In addition, just just attainable under given conditions to the variation possibility of the adjustment of filter tip characteristic.
Device and such method of this type are for example disclosed in DE3130827A1.In this document; The inserts that is used for cigarette filter is so to make; Not interrupted fibrous one banded material or materials flow by this inserts are guided on the carding roller; This roller is driven with such revolution, so as this fiber through this combing effect torn for the segmentation of irregular length and from this roller with directed being seen off arbitrarily.Like this by the fiber of tear fracture just by shower to a conveyer belt and handed on the carrying band that does not interrupt, it is made up of identical or different filter-tip materials.This carrying band and packing material are formed a filter rod then.In order to form this filter rod, they will be transported in the sett frame, and wherein this carrying band is extruded in the side and forms a kind of unbroken together then.According to this, just make a filter rod simultaneously what carry this filter rod along longitudinal axis.Then, after making this filter rod, this filter rod is a filter stick by cutting long just.
Therefore, the present invention's task is, the method and apparatus of making a kind of nonwoven that when the filter stick of producing the cigarette processing industry or filter rod, uses is provided, and its quality is improved.
The measure that solves this task is a method with a kind of nonwoven that when producing the filter stick of cigarette processing industry, uses of manufacturing of following method step:
--the fiber of at least a filter-tip material is broken up in a dozen in bulk putting;
--fiber that this quilt is broken up is transported in the conveyer that edge one throughput direction moves; With
--the fiber cluster that this quilt is broken up is mapped on this conveyer, constitutes a nonwoven according to this, and wherein this is broken up device and comprises that at least one centers on the member of breaing up of rotating shaft rotation.
Pass through the inventive method; Just can realize; With the uniform fibers shower to conveyer; The quality of the nonwoven that therefore, on conveyer, form or shower becomes has improved and the quality of the ribbon that is made up of this nonwoven according to this and also all improved by the quality of the filter stick of this ribbon production.
When this rotating shaft is arranged essentially parallel to the throughput direction of this conveyer, just can realize a kind of shower effect especially uniformly of fiber.
Broken up when being broken up in the device separated when at least two kinds of fibers, wherein particularly respectively break up device and break up a kind of fiber, like this, this break up the validity of effect and therefore this degree of breaing up just can be enhanced.Preferably, the fiber that this quilt is broken up was being got together before conveyer, thereby, a premixed job when this method is implemented, can saving fiber.
This task also solves through a method with a kind of nonwoven that when producing the filter stick of cigarette processing industry, uses of manufacturing of following method step in addition:
--the fiber of at least two kinds of filter-tip materials is broken up in the device separated breaing up;
--the fiber that this quilt is broken up is transported to a conveyer, wherein the fiber broken up of this quilt before this conveyer, get together and
--the fiber shower of getting together on conveyer, is constituted nonwoven according to this.
Pass through the inventive method; Just can improve the quality of the nonwoven of such formation; Because at the separated fabric thrashing of breaing up in the device at least two kinds of filter-tip materials; Wherein respectively break up device especially and break up a kind of filter-tip material, then cause degree of breaing up to improve, so then cause a kind of uniform fibers distribution in the nonwoven that institute's shower becomes thereupon.Therefore, not only the quality of this nonwoven be enhanced and also by the quality of its filter rod that constitutes and a quality of after this being cut long filter stick also improved.
Break up device when this and comprise that respectively at least one breaks up member and it encloses unified rotating shaft rotation, this rotating shaft is arranged essentially parallel to the throughput direction of this conveyer, just can realize the even distribution of fiber on this conveyer.In a particularly preferred embodiment of the inventive method, from top with fiber or filter-tip material shower to this conveyer.According to this, can realize the method operation of a compactness.
When a kind of fiber is a kind of compounding ingredients fiber, especially during bicomponent fibre, just can makes very effective filter rod or filter stick.But about these material REFERENCE TO RELATED people's European Patent Application No. Nr.03004594.2, its name is called " cigarette filter and manufacturing approach thereof (Zigarettenfilter und Verfahren zur Herstellungdesselben) ".This compounding ingredients fiber or bicomponent fibre just can be implemented in being connected of fiber in filter rod or the filter stick section with simple technique and method.For this reason, this compounding ingredients fiber, especially bicomponent fibre comprises the core and the crust of different materials, and wherein this skin material has a fusing point lower than core material.In this case; Just can be implemented in the connection very reliably of the fiber in this filter tip; For this reason, this filter tip or by fiber constitute as filter-tip material or be heated on the temperature of a fusing point that is higher than this skin material slightly by its mixture of making filter tip or filter stick.Just can realize the bonding of filter tip component in this way.
Under a kind of corresponding bicomponent fibre situation, this crust can be a polyethylene (PE) and this core can be polyester or PET (PET).The fusing point of this crust is positioned at 127 ℃ and the fusing point of core is positioned at 256 ℃ then.According to this, realize the bicomponent fibre that a kind of shape is highly stable, its skin material has a fusing point lower than core material.One of the Trevira of our company bicomponent fibre that adopts with optimal way as an example indicates mark 255, has the fiber number of 3.0dtex, 3 and 6mm between shearing length; A core that constitutes by PES (chemical fibre that constitutes by polyester); With a shell that is made up of copolymerization of ethylene or a crust, wherein this shell or crust are retrofited to such an extent that adhesiveness has improved, and that is to say; Be provided compound, it causes a less surface tension.
After the input energy, this filter-tip material can adhere at the contact point place at least or paste and be stamped compounding ingredients fiber or bicomponent fibre then.Under the temperature of a melting temperature that is higher than this crust, this crust just correspondingly soften or be melted on this filter-tip material, therefore, just can produce with an adhesion of the other component of this filter tip and be connected or bonding connection at the contact point place.At the cold solid very stable filter tip of a kind of like this shape of just realizing later on of this corresponding filter mouth component.
When at least a particle and/or powder during, just can make a kind of filter stick with improved filter tip quality at face before this conveyer.In framework of the present invention, the notion of particle also comprises extrudate.Comprise active carbon particle and 5 percentage by weights (Gew%) to the fiber of 20 percentage by weights (Gew%) of 80 percentage by weights (Gew%) to 95 percentage by weights (Gew%), bicomponent fibre especially as a kind of preferred ingredient of preferred filter-tip material or filter-tip material.Also can make the filter tip that constitutes by various fibers; Bicomponent fibre for example; Cellulose fiber peacekeeping activated carbon fiber; Wherein part of this bicomponent fibre or share are between 5 and 20 percentage by weights (Gew%), and the share of this cellulose fibre is between 20 and 95 percentage by weights (Gew%).Remainder can for example be made up of activated carbon fiber then.
The conveying of fiber and/or break up the most handy conveying air and realize, air is discharged from through negative pressure in the zone of conveyer basically then.
The present invention realizes that through the device of making a kind of nonwoven of when producing the filter stick of cigarette processing industry, using it has at least one and breaks up device, by it in addition; Can break up the fiber of at least a filter-tip material; And have a conveyer, but shower there is the said fiber of being broken up on it, to constitute a nonwoven; Wherein, this at least one break up device and comprise at least one rotating member of breaing up.Through the member of breaing up of this rotation, just can realize the extra high degree of breaing up of fiber, according to this, the density of the nonwoven of manufacturing will be very uniform.
When this rotating shaft of breaing up member is arranged essentially parallel to the throughput direction of this conveyer, can realize the density more uniformly of this nonwoven.Break up this special orientation of member through this, just can realize that the fiber that will be broken up flows to said conveyer very equably.For this reason, the quality of the nonwoven of manufacturing and all having improved by the quality of the filter stick of its manufacturing subsequently.
When be provided with at least two separated when breaing up device, the degree of breaing up of this fiber just can improve.Then this break up device be on throughput direction, settle abreast rather than front and back settle.These are broken up device and are designed to always break up a kind of fiber.For this reason, for example break up the barrier part of breaing up that comprises in the device at this and have heteroid sieve spare, it can adapt to corresponding fiber and for example adapt to diameter and/or length.When with break up in being connected of device and downstream on the throughput direction of this fiber when one conveying path always is set, the fiber that this quilt is broken up just can be transported to this conveyer reliably and go.
If gather in a space before this conveyer the time in this conveying path, fiber or also have other filter-tip material component effectively to mix fully then.As preferably, other filter tip component such as particle, powder and/or extrudate also always are transported to one and carry path or some to carry the path to go, and it is introduced in this space with other conveying path.
Said task also solves through a kind of device of making a kind of nonwoven of when producing the filter stick of cigarette processing industry, using; It has at least two and breaks up device; By them; Can break up a kind of fiber of filter-tip material, wherein each is broken up device a conveying path is set, and breaks up device and is provided with being separated from each other.Therefore according to this, the degree of breaing up of fiber has been enhanced, and the quality of fibroreticulate quality and the filter stick then made thus also has been enhanced.And for this reason, preferably be provided with and break up barrier part, they for example have heteroid sieve structure.
This separated set-up mode of breaing up device means that especially these break up device is mutual that settle abreast rather than the front and back arrangement on throughput direction.The fiber of one side only arrives this and separatedly breaks up among of device and do not arrive in this separated another one of breaing up device.
When a conveyer is set; It is positioned in the downstream of breaing up device and is configured to; The fiber shower ground that to be broken up forms a nonwoven; Wherein break up device and always comprise that at least one breaks up member, its rotating shaft is arranged essentially parallel to the throughput direction of this conveyer, so just can realize fiber on conveyer very equably shower be a nonwoven.
When carrying the path to be guided in the space together in the end, then can realize effectively mixing fully in downstream.And in this organization plan of the present invention, can be through carrying the path with particle, powder is in extrudate or this space of other filter-tip materials input.
When at least one is broken up device and is positioned on the conveyer, just can realize effectively and a device of saving the space.Here, this filter-tip material by directly from the top shower to conveyer.
A preferred filter rod manufacturing approach comprises following method step:
--fiber at least a end, that broken up is fully basically carried on the throughput direction of conveyer by the conveying air,
--by lip-deep fibrous structure one fleece that at least partly contacts at this conveyer,
--with this this fleece place on the wrapper and
--seal this fleece with this wrapper.
Also just find out like this, will cause making a kind of filter rod with carrying air on that carried on the throughput direction of a conveyer, that break up fully basically and a surface, will constitute a fibroreticulate fiber especially with very even filter tip characteristic at this conveyer.This conveyer just particularly a band conveyor and best a kind of suction band in framework of the present invention.
When sealing this fleece with this wrapper, this fleece preferably is placed in version like this, so that constitute the filter rod of a compactness.When sealing this fleece or afterwards with wrapper with energy on it so that when producing a firm connection at the contact point place of fiber; Then can produce the filter tip of relative resilient; And can look after, can not drop out fibrous material at the place, cut edge of this place, filter-tip cut edge or filter element.
In such scheme, wherein this fiber has filter tip or the filter element short length of a ratio by the ribbon institute cutting of manufacturing, just can realize filter tip characteristic especially uniformly.As preferably, the fiber of at least one kinds of fibers has a fiber diameter in 10 μ m to 40 μ m zones, especially in 20 to 38 μ m zones.Therefore these fibers that preferably are employed are microscler and are thinner.When as preferably in fiber, adding compound such as active carbon particle, when glyceryl triacetate or latex, just can regulate this filter tip characteristic especially simply.Active carbon particle as an example will add before breaing up completely in the fiber or join those will be in the fiber that this conveyer is transferred said.Glyceryl triacetate or latex are for example dosed in the said fleece that in the zone of conveyer, is become by shower as connecting medium.
When before this fleece is being placed in the step on the wrapper, just being compacted, can guarantee a compacting especially uniformly.For this reason, this compaction preferably is not only vertical and is level, also promptly for example from the above and below and from fibroreticulate both sides.
Yet a simple especially method operation is, this fleece is separated from conveyer by pressure air in order to be placed on this wrapper mechanically especially.
As preferably, this fleece before being placed on this wrapper just by moulding.At this, for example the step of this moulding can be stipulated at least, on transverse to the throughput direction of this nonwoven, constitutes a semicircle.Best mode is to constitute a complete circle or ellipse.
Preferably, filter tip or filter element are according to cut long be made into to the filter rod of manufacturing of above-mentioned filter rod manufacturing approach through subsequently.
Another one filter rod manufacturing installation comprises a shower device, by it; The filter-tip material of being broken up is transported on the conveyer, so that constitute a fleece, comprises a normalization device; Wherein, One encapsulating material is reeled around this fleece, and comprises that one is preferably handed to the device on this normalization device with this fleece from this conveyer, thereby this shower device is by carrying air just can realize the conveying of this filter-tip material to conveyer.
Through with carrying air to carry the filter-tip material of being broken up, just can make a special uniform fibers net, therefore, also just can make a uniform especially filter rod and and then can make filter tip or filter element especially uniformly.
When in the zone at conveyer at least one compaction apparatus being set, just can control this filter tip characteristic energetically.At this, the part of this conveyer or this conveyer is the part of this compaction apparatus preferably.Yet a simple especially attainable filter rod manufacturing installation is that this conveyer comprises at least one suction band.If these want processed fiber be so little, so that perforate that should suction band loses soon, then advantageous manner is for using two additional suctions work of taking, they with approximate right angle be positioned in this and first aspirate on two sides being with.This fibroreticulate one is especially effectively delivered by pressure air and realizes, through this pressure air this fleece is separated from this conveyer.
When being used to pass on this fibroreticulate device and comprising a conveyer belt, then possibly scheme be to make the characteristic of the filter tip that this fleece will make with respect to this institute or do correspondingly structure setting with respect to the version of this filter tip that will make.Preferably, this conveyer belt is a suction band.Yet a particularly preferred embodiment is that this conveyer belt is bent on transverse to this throughput direction.According to this, for example just can make a kind of cross section with simple technology and mode is circle or oval filter rod.For this reason, as two conveyer belts preferably are set, they between carry this fleece.Wherein this conveyer belt so is provided with, and is circular or oval-shaped so that this fleece may be molded to.For this reason, this conveyer belt always constitutes for example a semicircle or a half elliptic.
Yet the device of delivering as another kind is selected is, is used to deliver this fibroreticulate device and comprises a nozzle, through this nozzle, can carry this fleece.As preferably, it is circular or oval-shaped that this designs of nozzles becomes to make this fleece to be formed as.
Below, the present invention will be described with reference to the drawings, the CONSTRUCTED SPECIFICATION of the present invention of illustrated in detail can be clearly referring to accompanying drawing in this article about all in addition.Wherein show:
Fig. 1 is a dozen perspective diagrams of putting with shower device (aufschauervorrichtung) part in bulk,
Fig. 2 one is used for the sketch map of the device that filter rod makes,
Fig. 3 is a partial view of overlooking along the arrow A direction among Fig. 2,
Fig. 4 be among Fig. 2 along a partial schematic diagram of arrow B direction side-looking,
Fig. 5 one is used for the schematic representation of apparatus of filter rod manufacturing according to the present invention,
Fig. 6 is a partial view of overlooking along the arrow A direction among Fig. 5,
Fig. 7 be among Fig. 5 along a partial schematic diagram of arrow B direction side-looking,
Fig. 8 one is used for the partial schematic diagram of the device of filter rod manufacturing, wherein saves some members for the sake of simplicity,
Fig. 9 is the schematic top plan view on the device of Fig. 8, does not break up device but have,
Figure 10 is the part schematic perspective view of one of filter rod manufacturing installation embodiment,
Figure 11 is the sketch map of the part of a filter rod manufacturing installation,
Figure 12 is the other sketch map of another embodiment of the part of a filter rod manufacturing installation,
Figure 13 be one according to the present invention be used to make a fleece device schematic perspective view and
Figure 14 is a part of sketch map that is used to make another device of a fleece according to the present invention,
In Fig. 1, described a schematic perspective view of breaing up device 10.It relates to a scheme scheme of breaing up device 10 here; This scheme scheme is called the Europe patent application Nr.03007672 of " being used for being prepared in the method and the preparation facilities (Verfahren zur Aufbereitung endlicher Fasern undAufbereitungseinrichtung f ü r endliche Fasern zur Verwendungbei der Herstellung von Flitern) that is used for terminal fiber of producing the terminal fiber that filter tip uses " in another its name, disclose in 3.The content of this patent application should fully be received in the disclosure of present patent application.The technical theme of this patent application comes to this correspondingly is prepared in the technical scheme of the fibrous material of regulation uses when producing filter tip, so as to obtain to break up basically completely fiber and so a kind of should be able to be from the uniform filter rod of this fiber production.Wherein used for this reason and to have broken up device 10 among Fig. 1.Under a stable condition, this filter-tip material or fibrous material can broken up in advance in advance and correspondingly joined determined number.
Basically the fibrous material of not breaing up or fibre/fibre group-compound 49 schematically are depicted among Fig. 4 as an example, and it is moved in the said zone of action of a carding roller 76 with feeding roller 46 through a charging path 44.This carding roller 76 is arranged out this fibre/fibre group-compound and is broken up shape in advance.This fibre/fibre group-compound 49 is transported in the screen drum 21 of Fig. 1 through air stream 19 then.This point realizes through side perforate in the housing 22 20.This fibrous material is blown into by the longitudinal axis along this screen drum 21.Through both sides this fibrous material is just produced a circulation that detours 23 along anticlockwise air blowing.23 of this circulation are superposeed by an air-flow that is orthogonal to or is basically perpendicular to this circulation, and this air-flow is to cause through a negative pressure of setting up at thermopnore end 14 places and an air stream 13.This air-flow 13 is a kind of selections for heavier greatly fiber, and it is not total for essential.The negative pressure of setting up at thermopnore end 14 places is to produce through the negative pressure in the suction band conveyer of not describing; This suction band conveyer is placed in thermopnore end 14 places and said on the other hand negative pressure produces through air stream 17, and this air stream 17 is carried through this suction joint 16.Said just the interchange then begins and forms then to wear this screen drum 21 through the shell wall perforate stream of this screen drum 21 above screen drum 21.Then this quadrature flows to and reaches in this thermopnore zone 11 and flow through this same thermopnore zone up to this end 14.
Do not break up or the fibrous material do not broken up basically just arrives in said tube 21 within this tube 21 on the shell surface.This 21 rotation on the direction 24 that clockwise rotates with this screen drum 21.This fibrous material of not breaing up basically that has arrived this barrel shell surface is just flowed to this by the barrier part of positive rotation and breaks up roller 26.This breaks up roller 26 with 25 rotations counterclockwise.And as another kind of selection, it also is possible clockwise rotating.Also can adopt the every other scheme of rotation of expecting.This breaks up roller 26 can be set to porcupine roller, and it is caught these group of fibers of not breaing up and tears and make it to shreds its acceleration.This group of fibers will be rotated facing to doing centrifugation on the wall surface within this barrier part 21 so for a long time, has torn pine for ultimate fibre and passed through this shell wall perforate and maybe can pass through this shell wall perforate up to them.Replace a screen drum 21 that a barrier part that has orifice plate or round bar grid also can be set.
Fiber or seized by air stream and leading or siphoned away through the radial aperture of this barrier part by the fiber broken up.Through this air stream, this fiber is transported to said thermopnore place downwards.In case this air-flow that carries fiber has arrived thermopnore, this air-flow is just turned to and along this forniciform thermopnore leading.Owing to act on the cause of the centrifugal force on the fiber, these fibers are leading the wall motion and flow and be with the conveyer place up to this suction towards bending just.Common stream air above fiber then wedge spare or separator 15 places are separated and through the suction joint 16 be discharged from.
This corresponding fibre stream 18 has schematically been described in Fig. 1.As optional, the fiber of being broken up through an air stream 13 of discharging from this nozzle flapper 12 seize and correspondingly also be transported to this thermopnore end 14.Also a plurality of nozzle flappers can be set.
Group of fibers through this barrier part 21 does not have or do not have to be broken up fully in disposable cylinder stroke is just distinguished in the parallel barrier part 21 along with this circulation 23 arrives.In Fig. 1, describe break up device at least in part corresponding to those at the Scanweb of company; D
nemark (Denmark); And the W0 01/54873A1 of USA or US 4; 640, disclosed relevant art scheme among the 810A.The disclosure of patent application that this was alleged just now or the US-patent of just being carried should fully be received in the disclosure of this patent application.
This work of breaing up betides through this cylinder 21 with the interaction of said roller and air stream and especially because the perforate of having only the fiber of being broken up to have through this cylinder 21 runs through possibility in the past basically.Through carrying the direction delivery of fiber that fibre stream 18 that air provides breaks up this quilt towards thermopnore end 14, wherein, to the distance of this thermopnore 11 then owing to centrifugal force becomes more and more littler.In order to make corresponding air and fiber separation, be provided with separation flow device 15.
The sketch map that in Fig. 2, has shown a set frame 9.
Fig. 3 shown Fig. 2 according to the part of set frame 9 of the present invention schematic top plan view along arrow A direction among Fig. 2, Fig. 4 has shown the side view of set frame of the present invention 9 on the arrow B direction of this Fig. 2.
The fibrous material of not broken up 49 arrives dosing mechanism 46 or 76 through charging path 44, and it comprises 46, one dosage passages of two feeding rollers, and it is positioned between feeding roller 46 and the carding roller 76 and a carding roller 76.It is that plan from Fig. 3 (vertically goes in paper) towards the below that material feed to be given 47 direction, as schematic depiction there.49 of this fibrous materials of not breaing up are broken up in the chamber 10 at this and are broken up.This work of breaing up betides the result who breaks up the interaction of roller 26 and air stream 50 and the perforate in a grid 77 through this, and this grid 77 will be broken up chamber 10 and separate mutually with the space that and this thermopnore 11 are equipped with.The fiber 27 that the air stream that on thermopnore 11, produces through the air stream in the suction joint 16 is then carrying this quilt to break up.The air stream 17 of suction in the joint 16 be relatively its direction in Fig. 3 come out from this plan towards above, as describing among Fig. 3.This air stream 17 is also seen excess fiber off.28 of this air streams are used for fixing and compactings shooting suction at this suction band conveyer 32 fiber 27 on 43 down.
These fibers of having been broken up 27 just move towards the thermopnore end 14 of having settled a suction band conveyer 32 on thermopnore 11.On suction band conveyer 28, set up negative pressure through continuous air suction.The air suction is described through these air stream 28 signals.This negative pressure is with the ventilative suction that these fibers 27 of being broken up hold and make them to be fixed on this suction band conveyer 32.
This suction is with 43 towards the motion of the direction of set frame 9, that is in Fig. 2 left.So just this suction with on constitute one and go on thickness, to be almost linear fiber cake or the fibre stream 29 that increases towards set frame 9.These fibre stream that are stacked 29 be different-thickness and in the end of the stack region of this suction band conveyer the pruning work by a clipping device 31 is trimmed on the unified thickness.This clipping device 31 can be a kind of mechanical for example for prune a cutting disc or a pneumatic type for example by air nozzle.This mechanical type is pruned known on cigarette slivering machine.It is so to realize that this pneumatic type is pruned, and, flatly settles a nozzle in the end of fibre stream 29 that is, and from wherein discharging an air-spray and the part of this fibre stream 29 is torn, so excess fiber 30 just is excluded.Can also use a kind of fixed fire formula nozzle or a kind of plane jet nozzle.
After prune, this fibre stream 29 just is divided into ribbon 33 and unnecessary ribbon 30 that a quilt has been pruned.Also possible is that all fibers that are lower than a pruning size are held and torn and remove by an injection stream.These excess fiber then are sent back in this fiber production program and constitute a ribbon afterwards again.
33 of the ribbons of having been pruned are maintained at suction with moving on 43 and towards the direction of set frame 9.For this ribbon of having pruned 33, relate to a lax fleece, it will be compacted through a compaction band 35.Replace this compaction band 35, also can use a roller, for example a pressure disc 55 (as seeing Fig. 5).Can also adopt a plurality of band spares or roller or disk.Also can that kind as shown in Figure 3 especially, on side direction, implement a compacting to the fiber cake.In Fig. 3, compaction band 48 has been described, they are cone angle each other, and move with the suction tape speed with this fiber cake.The tooth-like version of this compaction band 48 has just caused different densities in the fiber cake that is compacted zone.This ribbon just is cut in the zone of higher density later on.This higher fibre density in zone, filter tip end help fiber in this sensitizing range compact mutual strong bonded and also help one of this filter stick processability preferably in addition.For in vertical direction compacting is provided with a compaction band 35 in Fig. 2.
Pruned the ribbon 34 of also compacting and just handed to set frame 9.This is delivered is through the ribbon that is compacted 34 is separated with 43 and then is placed on the specification band this ribbon 34 or a wrapper realizes that it is positioned on the specification band of this set frame 9 from suction.This specification band is not depicted in the accompanying drawing.Can relate to a common specification band here, also promptly be applied on the common filter tip set frame or on the cigarette set frame.This is delivered by a nozzle 36 that points to this ribbon that is compacted 34 from the top and is able to support that this nozzle 36 is flow through by air stream 17.In set frame 9, form a fiber filter tip bar 38, wherein pull out a wrapper 42 and such this fibrous material winding up that centers on of insight as usual from a bobbin 41.Through with wrapper 42 parcel the time, make the volume of this ribbon that is compacted 34 reduce with circular moulding or oval moulding or as shown afterwards; Before sealing, in fiber filter tip bar 38, itself set up a basic interior pressure with wrapper.
In solidification equipment 39, these are comprised in connection component in the fiber mixture and are heated outwardly and melt.These exterior layers that possibly be comprised in the bicomponent fibre in the fiber mixture are melted, therefore between fiber, have produced a kind of connection.Patent application DE10217410.5 of REFERENCE TO RELATED people especially to this.Can use multiple as fibrous material is the fiber that suits for desirable filter tip characteristic.For example can consider cellulose acetate as fibrous material, cellulose, carbon fiber and compounding ingredients fiber, particularly bicomponent fibre.About the said component of considering REFERENCE TO RELATED people's DE10217410.5 especially, it should be included in the disclosure of this application.
These different kinds of fibers are mixed before being preferably in slivering each other.Possible in addition is to add a kind of compound at least.About compound can for example be a kind of connection medium such as latex or glyceryl triacetate or granular materials, and it can connect the various components of cigarette especially effectively, like active carbon particle.
Particularly advantageous scheme is, the fibre length of the fiber of using be less than as the filter tip that will make or the length of filter element.Therefore this fibre length should be between 0.1mm and the 30mm and especially between 0.2mm and 10mm.For the filter-tip length that will be made, be that a common filter for cigarette perhaps relates to a filter tip segmentation under segmentation filter tip situation more than the cigarette., this average fibre diameter during especially in 20 to 38 μ m zones and particularly preferably in 30 to 35 μ m, just can make a well-proportioned filter tip in being in the scope of 10 to 40 μ m in addition.
This solidification equipment 39 can comprise a heating using microwave, LASER HEATING, heating plate or a sliding contact.Through heat this connection component for example the ultimate fibre of outer coversheet in this ribbon of bicomponent fibre or latex just interconnect and welding outwardly.This solidification equipment 39 also can be realized one to the need of stoving with the bi-component that liquid form was added.When this ribbon of cooling, just solidify again in the zone of having melted of these heated connection components.The lattice framework that produces so then gives ribbon with rigidity and hardness.
At last, this fiber filter tip bar 38 that has hardened is cut into filter stick 40.Described filter-tip sclerosis also can be carried out after cutting into filter stick 40.
Fig. 5 shows the sketch map of the embodiment of the present invention of a set frame 9.The vertical view of the part that the set frame 9 that Fig. 6 shows Fig. 5 is seen along the arrow A direction and the side view of set frame 9 on the arrow B direction that Fig. 7 shows Fig. 5.
Be with the difference of the set frame 9 of Fig. 2 to 4, in this embodiment, the fibrous material of being broken up 27 be from the top by shower to suction with on 43 and be on throughput direction 74.Also the scenario-frame form of breaing up device 10 that 10 in device is Fig. 1 of breaing up of signal description in Fig. 5 to 7.In breaing up chamber 45, these screen drums 21 rotate along the direction of arrow.In addition, break up the form that roller 26 is constructed to carding roller; Certainly these rollers are placed in the screen drum 21 by middle relatively heart with regard to the variation of relative Fig. 1.This carding roller 26 also is used under this situation, and the fibrous material of also not breaing up or these interconnective group of fibers are impacted into separated single fiber, so that these fibers of breaing up can arrive in the funnel 53 through the tap of this screen drum 21.Then, through corresponding air stream and in this case also through gravity, this fiber of breaing up 27 just arrive this suction band conveyer 32 that under this situation, be configured in the zone of aspirating strap clamp plate 57.
A kind of uniform shower of fiber 27 can especially so realize; Promptly this screen drum 21 comprises and breaks up roller 26; Wherein this screen drum breaks up with this that roller has longitudinal axis and this is broken up roller 26 and has a rotation 91 especially, and it is parallel to or is basically parallel to the throughput direction 92 that conveyer 43 is with in this suction.Through this screen drum 21 with break up roller 26 this special orientations, this fleece 29 or fibre stream 29 just can be especially equably by shower to this conveyer 43.
So a corresponding fibre stream 29 just is with on 43 to this suction by shower.Excess fiber material 30 is just removed from this ribbon that stays 33 by a trimmer 31 up.33 of ribbons that this has been pruned are compacted by a pressure disc 55, and this pressure disc 55 is again simultaneously suction with 43 ' on this throughput direction, see the segmentation that turns to of back.Just aspirated immediately following contiguous this ribbon that is compacted 34 this pressure disc 55 after and to be with 43 by one ' from above maintain.Produce a negative pressuren zone 54 by air stream 28 for this reason.For realize from this suction with 43 ' separation, air stream 37 is set, it is discharged to this suction through nozzle 36 and is with.This fiber billot 34 that is compacted just is with 43 ' separation and is handed to a normalization structure 56 from the air stream 37 of nozzle 36 by one from suction then.Thus, this ribbon that is compacted 34 just as arrive on the wrapper 42 suchly, it is transferred on a specification band.And remaining method step is corresponding to those corresponding steps according to Fig. 2 to 4.
In Fig. 8, described the sketch map of the part of another device.Suction is turned to round slewing rollers 59 with 43.This fibre stream 29 is configured gradually, and it just becomes the said ribbon of having been pruned 33 after pruning.This clipping device does not show in the describing of this Fig. 8.In the shower zone of ribbon 29. the fiber of being broken up 27 arrives on this ribbon from the below.
Then, this ribbon 33 arrives on the wrapper 42, and it arrives again on the specification band 58.42 of this specification band 58 and wrappers turn to through corresponding roller 59.This ribbon 44 arrives on this wrapper 42 in the zone of roller 61.On this position, be exactly the beginning of this normalization structure 56, this wrapper 42 is just become general type round these ribbon 33 winding ups therein.
In Fig. 9, describe a vertical view of Fig. 8 device, wherein disclose a characteristic of these side clamping plate 57 especially.These side clamping plate 57 yet abut against on ribbon 29 or 33, and it is constructed to suction and is with 43, and they turn to round slewing rollers 59 again itself.Under especially little He thin fiber situation, maybe be essential be, a suction band not only is set, but three suction bands is set as in this embodiment, this fibrous material is correspondingly remained on to aspirate and is with or these suctions are with according to this.
Figure 10 has shown that one is handed to said ribbon on the normalization structure 56 with 43 or hands to the schematic perspective view of device on this wrapper 42 especially from suction.This ribbon that in this accompanying drawing, does not show will be with 43 lower zone through this suction that slewing rollers 59 are turned to from this, arrive the free space of this opposite opposed band spare 62.
Band part 62 also can be in particular steel band, and they turn to roller 63.Through this structure setting of band part 62, just between two opposed band spares 62, produce a hollow space with circular cross-section.Have the space of circular cross section through this, this ribbon 34 just arrives and is placed on this wrapper 42.Through the said device of delivering, just realized a moulding of this ribbon 34 and realized further compacting work where necessary.In this embodiment, aspirate the side wall construction that strap clamp plate 57 is constructed to fix.
Figure 11 has shown the partial cutaway sketch map of a bar manufacturing installation 9.In a funnel 53 by by the fiber 27 broken up from above the fibre stream 29 that becomes of shower just arrive suction with 43 on and the zone of action of a press belt 64, this press belt 64 turns to round rod 65.This corresponding compacting fiber bar will arrive in the nozzle 66 and by air stream 67 and continue to be transported on the wrapper 42, and it is placed on the specification band 58.Then, this ribbon is sealed with this wrapper 42 as usual, so that constitute a fiber filter tip bar 38.
Figure 12 has shown the partial cutaway sketch map of another manufacturing installation 9.This is arrived in the zone of action of a nozzle 68 with 43 ribbons carried 33 by suction, and it is delivered to pressure air 69 on the ribbon in the zone that is arranged in slewing rollers 65, and is with 43 to separate from suction this ribbon 33 according to this.The angle that this nozzle or pressure air affact on this ribbon 33 can be regulated.Ribbon 33 is with 43 separate from suction after, this ribbon 33 just arrives and should encircle in the nozzle 70.Air 67 through nozzle slot 71 flows out can be realized different functions according to the nozzle arrangements scheme.Such was the case with for this function, and the negative pressure of promptly in the nozzle entrance passage of nozzle 70, setting up is with 43 to separate from the suction that the slewing rollers 65 that also can be constructed to pressure disc 65 at that move this ribbon 33.In addition, this ribbon can flow to this ribbon through this pressure air 67 and realize one with the conveying of this ribbon in the first hollow cone part 72 that can form specification under the angle of confirming.As scheme possible be that this pressure air 67 tears pine for ultimate fibre or group of fibers and in this wise this ultimate fibre or group of fibers are transported in the first hollow cone part 72 that can form specification with this strip.Through this pressure air, also be transported to then in the second hollow cone part 73 that can form specification in the first hollow cone part 72 of the formed specification that this ribbon or ultimate fibre and group of fibers are transported to.Below the second hollow cone part 73 that can form specification, moving this specification band 58 with and on the wrapper 42 settled.The second hollow cone part 73 has the less degree of convergence of a ratio first hollow cone part 72.In can forming the first hollow cone part 72 of specification, be equipped with passage.These passages are applied to the air separation of this nozzle air 69 and 67.
Be used as in first situation that ribbon delivers at ribbon 33, this ribbon by moulding in the said hollow cone part 72 and 73 that forms specification and from above and from below by this specification band 58 that moves for the specification structure.This ribbon 33 delivering fully below hollow cone part 73 on this specification band or the wrapper 42 realized.In this second scheme; Wherein ultimate fibre and group of fibers are supported ground in this can form the hollow cone part of specification, to be extruded by nozzle air 69; Because the degree of convergence of hollow cone part then causes one of ultimate fibre and group of fibers to gather, therefore form a new ribbon.This ribbon be in second hollow cone part 73, form fully and handed on this specification band or the wrapper 42 at the end of this second hollow cone part 73.Then, this wrapper 42 is as being centered on this strip winding up and packed tritionally, so that constitute fiber filter tip bar 38 like this.
The cigarette bar is different with making, and is according to the difficulty of filter rod production of the present invention, will use or not be configured to with having corresponding additive such as active carbon particle or activated carbon powder uniform filter rod by meticulous fibroplastic filter-tip material.Correspondingly, the member that these are different or the structure of device will be carried best, keep or the applied material of processed.
Can relate to cellulose fibre about this fibrous material; Come from the fiber of thermoplastic starch (St
rke); Flax fiber; Hemp, oil flax fibre, wool fiber; Cotton fiber or compounding ingredients fiber, they have one than the less length of the filter tip that will make and have a for example rugosity in the scope of from 25 to 30 μ m.Adaptable like this is that the model that is not processed of for example Fa.Stora Enso Pulp AB is the cellulose fibre of Typ stora fluff EF, they have an average cross section be 30 μ m and have one 0.4 and 7.2mm between length.As staple fibre such as bicomponent fibre, the length that has that can use Fa.Trevira GmbH is that the model of 6mm is the fiber of Typ Trevira 2553.0dtex HM.These have the diameter of one 25 μ m.As other staple fibre, can use cellulose acetate fibre, polypropylene fibre, polyethylene fiber peacekeeping dacron fibre.Can use the material that can influence the sense of taste or fragrance as additive, for example active carbon particle or sense of taste material and other adhering material can be bonded to each other together by its this fiber.
Figure 13 shows one and is used for producing a kind of device schematic isometric of making the nonwoven that filter stick uses in the cigarette processing industry according to the present invention.It is provided with five and breaks up device 80, and they have scattering drum 81, for example is the version of screen drum, and this has been described in detail in front.Can settle in the scattering drum of in Figure 13, just describing by an example 81 and break up roller 26.And as having described in the past.About this please especially with reference to figure 5 to 7 and Fig. 1.Scattering drum 81 can be constructed around a rotating shaft 91 rotations.This scattering drum 81 can certainly be a fixed in position, and a longitudinal axis wherein is set then, it with Figure 13 in the rotating shaft 91 that shows mutually harmonious.Also can also in this scattering drum 81, be provided with one and break up roller, it has the rotating shaft of translation to rotate around a rotating shaft 91 or with this rotating shaft 91.This scattering drum 81 or screen drum should be configured to a kind of fiber is broken up effectively.For this reason, the sieve structure of this screen drum is for example wanted can be fitted on the length and diameter of this fiber that will be broken up about its length and width.
Downstream on this fiber throughput direction, and break up at this and to be connected with this conveying path 82 on device 80, its fibrous material that will be broken up is transported to one and integrates member 83, and it has a chamber 87 in lower zone, carries path 82 to feed wherein.With being connected of chamber 87 in or in the lower zone of this integration member 83, settle a suction band conveyer 84.
This filter-tip material is correspondingly mixed in chamber 87.These materials are not only through this gravity effect but also basically through carrying air to carry, therefore owing to carry the action of turbulent flow of air in chamber 87 just to produce a good homogeneous mixing.After delivering zone 85; These are mixed uniformly and just be sent to suction that this suction is with conveyer 84 with in 86 the zone of action by fibers of being broken up, and said these fibers are to being transported to the granular materials that this chamber 87 goes by the other path do not described as an example and mixing mutually through this under the stable condition.Just gone out a fleece 88 here then by shower.
This fleece 88 has been done to describe in Figure 14.This suction is with 86 to move along throughput direction 92, and therefore the fleece that becomes of shower is that thickness increases on this throughput direction like this.
In Figure 14, described among Figure 13 by a partial view in the said zone of this mixing chamber 87 of depicted in greater detail roughly and be a signal partial view of this type device.This carries path 82 parallel orientation in the zone at first on top, and this point has shown it is a variation comparing the embodiment of Figure 13.But also fiber 90 and granular materials 89 have been described.In the embodiment that this Figure 14 representes, three different kinds of fibers are transported in the chamber 87 with two different particle type, then are with on 86 in suction to be become a fleece 88 by shower.The negative pressure that this conveying air is set up through a there below with 86 in suction is drawn out of.
After fleece 88 showers became, this fleece was transported to a shaped device, as this in front as described in.Heater to this nonwoven can be set then, so that therefore the fusing at the appearance place of the bi-component of a for example applied component as this filter-tip material or this nonwoven produces a kind of firmer and ventilative syndeton after it solidifies.According to breaing up device 80 conducts is that a kind of fiber is transferred preferably.And a dosing mechanism when breaing up device 80, this is set in that fiber is transported to respectively.
Reference numerals list
9-bar manufacturing installation, 10-breaks up device, the 11-thermopnore, the 12-nozzle flapper, 13-air stream, 14-thermopnore end, 15-separation flow device, 16-aspirates joint; 17-air stream, 18-fibre stream, 19-air stream, 20-perforate, 21-screen drum, 22-housing, 23-circulation, the turning to of 24-screen drum; 25-breaks up turning to of roller, and 26-breaks up roller, the fiber that 27-is broken up, 28-air stream, 29-fibre stream, the unnecessary fiber of 30-, 31-clipping device, 32-suction band conveyer; The ribbon that 33-has been pruned, the ribbon that 34-is compacted, 35-compaction band, 36-nozzle, 37-air stream, 38-filter rod, 39-solidification equipment; The 40-filter stick, the 41-bobbin, the 42-wrapper, 43-aspirates band, and 44-gathers the path, and 45-breaks up chamber, the 46-feeding roller; The 47-material is fed and is given, the 48-compaction band, and 49-fibre/fibre group-compound, 50-air stream, 52-aspirates joint, 53-funnel, 54-negative pressuren zone; The 55-pressure disc, the 56-structure of standardizing, 57-suction strap clamp plate, 58-specification band, the 59-slewing rollers, the 61-roller, 62-is with part; The 63-rod, 64-press belt 64,65-roller, 66-nozzle, 67-air stream, 68-nozzle, 69-pressure air; 70-encircles nozzle, 71-nozzle slot, the 72-first hollow cone part, the 73-second hollow cone part, the throughput direction of 74-filter-tip material, 75-throughput direction, 76-carding roller; The 77-grid, 80-breaks up device, the 81-scattering drum, 82-carries the path, and 83-integrates member, and 84-aspirates conveyer, and 85-delivers the zone; 86-aspirates band, 87-chamber, 88-fleece, 89-particle, 90-fiber, 91-rotating shaft, 92-throughput direction.
Claims (6)
1. make a kind of method of the nonwoven (29,33,34,88) that when producing the filter stick (40) of cigarette processing industry, uses, have following method step:
---the fiber (27,90) of at least two kinds of filter-tip materials is broken up separated breaing up in the device (10,80);
---these fibers (27,90) of having been broken up are transported to a conveyer (32 through being connected to the said conveying path (82) that is arranged in the downstream on the fiber throughput direction on the device (10,80) of breaing up; 43,84,86) go; The fiber (27,90) that wherein said conveying path (82) and the quilt of carrying have therein been broken up is near conveyer (32,43; 84,86) in chamber (87), get together before;
---with the fiber of getting together (27,90) shower constitutes this nonwoven (29,33,34,38,88) according to this to this conveyer (32,43,84,86)
The wherein said device (10,80) of breaing up comprises that respectively at least one breaks up member (21,26,76,81), and it rotates around rotating shaft (91), and this rotating shaft is arranged essentially parallel to the throughput direction (92) of this conveyer (34,43,84,86).
2. by the method for claim 1, it is characterized in that:
Shower to conveyer (32,43,84,86) is carried out from the top.
3. by the method for claim 1, it is characterized in that:
A kind of fiber (27,90) is a kind of composite fibre.
4. by the method for claim 1, it is characterized in that:
Import at least a particle (89) and/or powder before near conveyer (32,43,84,86).
5. make a kind of device of the nonwoven (29,33,34,88) that when producing the filter stick (40) of cigarette processing industry, uses, have at least two separated devices (10 of breaing up; 80), can break up the fiber (27,90) of at least two kinds of filter-tip materials, and have a conveyer (32,43 by them; 84,86), but the fiber that shower is broken up on it (27,90), so that constitute a nonwoven (29; 33,34,88), it is characterized in that:
Said at least two break up that device (10,80) comprises at least one rotation respectively break up member (21,26,76; 81), wherein at least two kinds of fibers (27,90) are broken up in the device (10,80) said separated breaing up; And by the fiber (27,90) broken up near conveyer (32,43; 84,86) get together before
Wherein said rotating shaft (91) of breaing up member (21,26,76,81) is arranged essentially parallel to conveyer (32; 43,84,86) throughput direction (92), wherein with break up device (10; 80) connect and settle a conveying path (82) respectively, wherein near conveyer (32,43 in the downstream of the throughput direction of fiber; 84,86) before, these carry path (82) to be guided to together in the chamber (87).
6. by the device of claim 5, it is characterized in that:
Break up the top that device (10,80) is positioned in conveyer (32,43,84,86) for said at least two.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03007675.6 | 2003-04-03 | ||
| EP03007675A EP1464239B1 (en) | 2003-04-03 | 2003-04-03 | Method and apparatus for the production of a filter rod |
| EP03018113A EP1464240B1 (en) | 2003-04-03 | 2003-08-08 | Method and apparatus for producing a fabric for the production of a filter rod |
| EP03018113.5 | 2003-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1535628A CN1535628A (en) | 2004-10-13 |
| CN1535628B true CN1535628B (en) | 2012-05-23 |
Family
ID=32852236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410034246.7A Expired - Fee Related CN1535628B (en) | 2003-04-03 | 2004-04-05 | Method and device of making nonwoven fabrics for producing filtering bar |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040237269A1 (en) |
| EP (2) | EP1683432A1 (en) |
| JP (1) | JP4512397B2 (en) |
| CN (1) | CN1535628B (en) |
| PL (1) | PL210029B1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006018102A1 (en) * | 2006-04-18 | 2007-10-25 | Hauni Maschinenbau Ag | Fiber filter production |
| DE102006028382A1 (en) * | 2006-06-19 | 2007-12-27 | Hauni Maschinenbau Ag | Filter strand machine operating method for use in tobacco processing industry, involves recycling separated filter materials in area of machine, so that materials are separated from each other before supplying materials to strand conveyor |
| DE102010000680A1 (en) | 2010-01-05 | 2011-07-07 | Hauni Maschinenbau AG, 21033 | Production of filter strands and filter rod machine |
| DE102010000677A1 (en) * | 2010-01-05 | 2011-07-07 | Hauni Maschinenbau AG, 21033 | Apparatus for the simultaneous production of at least two fibrous webs for the production of filter rods of the tobacco processing industry |
| CN102860586B (en) * | 2011-07-04 | 2014-03-26 | 湖北中烟工业有限责任公司 | Non-woven fabric filter tip material with materia medica incense smoke and preparation method thereof |
| US10076135B2 (en) | 2014-05-23 | 2018-09-18 | Greenbutts Llc | Biodegradable cigarette filter tow and method of manufacture |
| WO2016012447A1 (en) * | 2014-07-22 | 2016-01-28 | Jt International S.A. | Method and apparatus for forming a filter rod |
| EP3223637A1 (en) * | 2014-11-26 | 2017-10-04 | G.D. S.p.A | Method and apparatus for making a continuous rod of fibrous material |
| DE102020125404A1 (en) * | 2020-09-29 | 2022-03-31 | Voith Patent Gmbh | air laying device |
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| GB2145918A (en) * | 1980-08-04 | 1985-04-11 | Molins Plc | Producing filler material, particularly for cigarette filters |
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| DE2013078A1 (en) * | 1970-03-19 | 1971-09-30 | Hauni Werke Korber & Co KG, 2050 Hamburg | Method and device for monitoring the function of tobacco processing machines |
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- 2003-08-08 EP EP06009384A patent/EP1683432A1/en not_active Withdrawn
- 2003-08-08 EP EP03018113A patent/EP1464240B1/en not_active Expired - Lifetime
-
2004
- 2004-03-31 JP JP2004102610A patent/JP4512397B2/en not_active Expired - Fee Related
- 2004-04-01 PL PL366815A patent/PL210029B1/en unknown
- 2004-04-02 US US10/815,979 patent/US20040237269A1/en not_active Abandoned
- 2004-04-05 CN CN200410034246.7A patent/CN1535628B/en not_active Expired - Fee Related
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| GB2145918A (en) * | 1980-08-04 | 1985-04-11 | Molins Plc | Producing filler material, particularly for cigarette filters |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1464240B1 (en) | 2006-10-04 |
| EP1464240A1 (en) | 2004-10-06 |
| PL366815A1 (en) | 2004-10-04 |
| JP4512397B2 (en) | 2010-07-28 |
| JP2004337158A (en) | 2004-12-02 |
| US20040237269A1 (en) | 2004-12-02 |
| CN1535628A (en) | 2004-10-13 |
| EP1683432A1 (en) | 2006-07-26 |
| PL210029B1 (en) | 2011-11-30 |
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