Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
  • A24D3/02—Manufacture of tobacco smoke filters
  • A24D3/0229—Filter rod forming processes
  • A24D3/0233—Filter rod forming processes by means of a garniture
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
  • A24D3/02—Manufacture of tobacco smoke filters
  • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
  • A24D3/0208—Cutting filter materials
• • 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
  • A24D3/04—Tobacco smoke filters characterised by their shape or structure

Definitions

• the invention relates to a method for producing a filter for products of the tobacco processing industry, wherein strips of filter material are fed to a format device and the strips are cut from a layer of filter material.
• the invention further relates to a device for producing a filter for products of the tobacco processing industry with at least a first separating element for dividing a layer of filter material into at least two filter material strips and at least two guide elements for guiding the filter material strip on the way to a format device.
• the invention further relates to a filter for products of the tobacco processing industry.
• the fleece-like filter material is cut into uniform strips with a bevy of circular knives, which naturally have a rectangular cross section and are combined to form an endless filter rod.
• these strips lying parallel to one another are intended to represent a dense mass, so that it should flow exclusively through the filter space not filled by these strips.
• the sum of the cross-sectional area of these unfulfilled spaces results in a so-called free passage area, which is to be set at a selected drawing resistance of the filter plug so that the flow velocity of the smoke flow is sufficiently large for optimal precipitation.
• a gem. Tobacco smoke filter produced in this document has no uniform smoke permeability distributed over the cross section of the tobacco smoke filter. Furthermore, it is difficult to adjust the pull resistance of the overall cigarette to a desired pull resistance.
• a biodegradable filter for cigarettes is known from OE 197 53 195 AI, the disclosure of which is incorporated by reference into this application, in which a filter manufactured from an air-laid process is known Cel 1 ulosevl ies is introduced in a spiral fold in an envelope of the filter.
• a filter manufactured according to DE 197 53 195 AI has the disadvantage that it is also difficult to set a draw resistance for this filter, since smoke can be drawn in particular through the central region of the filter, without this being subject to appropriate filtering.
• the present invention has for its object to further develop a generic method for producing a filter and a generic device for producing a filter such that it can be used to efficiently set a desired tensile resistance for the filter or filter train being manufactured. It is also an object of the present invention to provide a filter which has a uniform tensile resistance distributed over the cross-sectional area.
• This object is achieved by a method for producing a filter for products of the tobacco processing industry, strips of filter material being fed to a format device, the strips being cut from a layer of filter material which is further developed by having the layer of filter material from a filter material supply selectable width is cut.
• a tobacco smoke filter is preferably produced by the method according to the invention.
• the term selectable also includes the terms predeterminable and adjustable.
• the position of filter material is understood to mean, in particular, a layer of filter material which, for example, is unrolled from a rolled-up state in order to be able to be cut accordingly.
• the width of the layer is preferably set, a variation of the filter production from a filter with a predetermined tensile resistance to a filter with another predetermined tensile resistance is easily and effectively possible.
• the width of the layer is preferably adjusted 11 depending on the tensile resistance.
• the width of the strips is preferably set, in particular variable.
• This preferred embodiment of the method according to the invention enables a simplified adaptation of the widths of the strips fed to the format device to the final cross section of the filter strand or filters produced, so that a uniform tensile resistance can be achieved over the entire cross section of the filter.
• a particularly uniform tensile resistance is given if preferred at least two strips have a different width.
• Preferably two strips are of equal width.
• the filter material is preferably a nonwoven and in particular has been produced by the air-laid method.
• Any fiber materials can be used as carrier nonwoven fibers, such as cellulose, Cel 1 ul oseace- tat, regenerated cellulose, linters, etc.
• Styrenes have proven particularly useful as compounds which are brought to polymerization in the nonwoven, but also acrylic or methacrylic acid esters, vinyl acetate, Vi nyl chloride, vinyl ether and isobutylene.
• the components of the fleece reference is made in particular to DE-AS 19 57 763.
• the processed cellulosic fibers are not suspended in water as in the classic paper production process and placed on a permeable sieve for sheet formation, on which the cellulosic fibers then cross-link with one another due to their grinding and fibrillation. instead, they are placed in a single air stream at most, which transports them onto a permeable endless sieve and places them on this in an unordered manner.
• a mechanical bond and thus the strength required for further processing is obtained by adding a binder such as polyvinyl alcohol, polyvinyl acetate, polymer starch, dextrin or latex to the air stream.
• vol 1 will be included! I refer to DE 197 53 195 AI.
• the strips are preferably arranged one above the other before being fed to a format device.
• This preferred embodiment of the invention makes them one on top of the other! i egend introduced into a format device. If the strips are preferably placed one above the other in the format device at the latest, with essentially no voids remaining between the strips, a particularly uniform distribution of the tensile resistance is possible.
• the fil termateri al supply is preferably a bobbin with a layer of filter material wound on it.
• This particularly preferred embodiment of the method according to the invention makes it very easy to cut the filter material in the correct amount for the desired drawing resistance.
• the bobbin is preferably driven by conventional motors, care being taken to ensure that the removal speed of the fleece or of the filter material is kept constant.
• the speed is preferably regulated or controlled as a function of the radius of the filter material wound on the bobbin.
• the bobbin is set in rotation, in particular in the form that the removed filter material is removed in an equal amount per unit of time.
• the filter material supply in the form of a bale instead of a filter material supply in the form of a bobbin, but then the parts of the filter strand which are produced from the filter material and which result from a bent part of the layer of filter material in the bale must be excluded from further processing due to the undefined tensile resistance.
• the invention is further achieved by a device for producing a filter for products of the tobacco processing industry with at least one first separating element for dividing a layer of filter material into at least two strips of material, at least one second separating element for separating the layer of filter material from a filter material orrat is provided.
• the device according to the invention makes it possible to further process the amount of filter material to be provided for the desired tensile resistance, which is combined to form a filter strand, into filters.
• the position of the second separating element can preferably be predetermined in order to specify the width of the layer.
• the position or the second separating element is preferably displaceable, and in particular preferably in a direction that is perpendicular to the line of the filter material to be cut.
• the position of the at least one first separating element can preferably be predefined for specifying the width of the filter material strips, a uniform tensile resistance can be generated in a simple manner over the cross section of the filter to be produced.
• the position of the at least one first separating element is preferably displaceable.
• a plurality of first separating elements are preferably provided, which produce essentially parallel cuts into the filter material layer.
• the position of at least one first separating element and in particular each first separating element is preferred! em ⁇ nts movable or adjustable.
• the first and / or second separating elements are preferably knives, in particular circular knives.
• the first and / or second separating elements comprise bundled electromagnetic waves of high energy density, such as laser beams. Excimer lasers or CO lasers are preferably used for this purpose.
• the format device preferably comprises a first and / or a second pair of rollers, which provides a particularly simple embodiment of the device according to the invention.
• the first pair of rollers defines a passage opening for the material strips, which corresponds to the design of material strips placed on top of one another, it is possible in a simple manner to arrange the material strips one above the other in such a way that there is no cavity between them which negatively affects the tensile resistance could affect.
• the second pair of rollers defines a passage opening for the material strip, the round, a round filter strand for further processing can be implemented in a simple manner.
• a particularly preferred embodiment of the present invention is given when the filter material supply is a bobbin that is rotatably and drivably mounted.
• a motor is used in particular, which ensures that the speed at which the filter material is drawn off is constant, for which purpose the speed of the motor is preferably regulated or controlled.
• the invention is further achieved by a filter for products of the tobacco processing industry, in particular a tobacco smoke filter, which was produced in particular by one of the aforementioned methods, wherein a plurality of fleece strips arranged one above the other are provided.
• a plurality of fleece strips arranged one above the other provides an essentially uniform tensile resistance distributed over the cross section of the filter.
• the width of the strips is preferably matched to the cross section of the filter to be produced, as a result of which a very uniform draw resistance is possible. If the fleece strips are preferably arranged parallel to a longitudinal axis of the filter, the properties of the filter produced in this way can hardly be distinguished from those which were produced from a cell ul acetate.
• the fleece is preferably produced by an air-laid method.
• the fleece strips preferably lie flat against one another and have essentially no hollow space between them.
• Fig. 1 is a plan view of a device according to the invention. a first embodiment
• FIG. 2 shows a side view of a further exemplary embodiment of the present invention, the essential elements of the exemplary embodiment from FIG. 1 also being contained,
• FIG. 3 is a cross-sectional view of a format along the section line A-A of FIG. 2,
• Fig. 4 is a cross-sectional view of a format along the section line B-B of Fig. 2, and
• Fig. 5 is a schematic representation of a cross section through a stack of non-woven strips.
• a fleece 13 is wound on a bobbin 10.
• the bobbin 10 is rotatably mounted about its axis of rotation 11. Due to the low tensile strength of a corresponding fleece, the bobbin is rotated by means of a motor for pulling off the fleece 13.
• the fleece is preferably produced by an air-laid process.
• a layer of fleece 13 is separated from the fleece supplied in rolls or reels 10 by means of a circular knife 12. This layer, which is separated, can be, for example, 38 mm wide, and the width of the bobbin itself can be, for example, 1.50 m.
• the fleece 13 is guided past a pressure roller 14 and then cut into further fleece strips 16 by further circular knives 15, in this exemplary embodiment 6.
• Another number of fleece strips 16 can also be used, such as 8 fleece strips.
• the fleece strips 16 each have the same width in pairs of, for example, two 8 mm, two 7 mm and two 4 mm.
• the fleece strips 16 are guided by two rollers 17, which are arranged adjacent to one another and are intended to prevent an unwanted displacement of the fleece strips against one another, to further rollers 17, by means of which the fleece strips 16 are arranged one above the other, the complete stacking of the fleece strips in a format roller 18 or a pair of format rollers happens.
• the pair of two format rollers 18 is gem in the embodiment. Fig. 1, for example.
• FIG. 2 shows a side view of a further exemplary embodiment of the present invention.
• FIG. 2 essentially corresponds to a side view of the embodiment of FIG. 1, although the format rollers 18 arranged on the far left in FIG. 2, by which a section B-B is indicated, are not shown in FIG. 1.
• counter bearings 20, which are designed as rollers or rollers and serve as counter bearings to circular knives 15, are shown as further elements.
• the other elements correspond to the elements from FIG. 1.
• the two circles of the bobbin 10 indicated on the right show with respect to the larger diameter is the part of the bobbin from which no layer has yet been removed and, with regard to the smaller diameter, the part of the bobbin from which the layer of fleece 13 is pulled off.
• the dashed lines serve to simplify the representation of the fleece strips 16 with respect to their path of movement.
• Fig. 3 shows a pair of format rollers consisting of two
• a groove 22 is shown which shows the insertion of six VI strips 16 enables the nonwoven strips 16 without significant deformation or force.
• the fleece strips 16 are made possible by the opening which results from the interaction of the grooves 22 of the two format rollers 18.
• 3 shows the format rollers shown in FIG. 2 in section A-A. By providing this pair of rollers, it is possible to provide essentially no cavities between the fleece strips 16.
• the fleece strips 16 are passed through a pair of format rollers, which is shown in FIG. 4, which is a cross-sectional view along the section line B-B of FIG. 2.
• a groove 22 is provided which is round. This results in a circular passage area of the adjacent format rollers.
• the fleece strips 16 are not all of the same width in order, as shown in FIG. 5, to emulate the shape of the filter, namely in this case a circular shape, as indicated by the circle 23 in FIG. 5.
• the fleece thickness is, for example, approx. 1 mm.
• the filter strand 19 After the filter strand 19 has been shaped, ie after it has passed through the pair of format rollers 18, the filter strand 19 is introduced into a covering, in order to then cut off correspondingly large parts of the filter strand, so that filters of the desired length of use or variety subjects of the desired length of use can be processed further.
• the nonwoven strips 16 are preferably guided along paths of the same length, placed one above the other and introduced into the format, the filter rod machine and then enveloped.
• the advantage of separating the web or layer of fleece from a roll or a bobbin is the possibility to easily vary the draw resistance of the filter. It is not necessary to keep a separate bobbin with the appropriate width in stock for each draw resistance specification.
• the width of the nonwoven web can be adjusted depending on the desired filter draw resistance. There is a proportional relationship between the tensile resistance and the set web width, although this does not necessarily have to be linear.
• customary methods and devices are used, such as are customary when changing the bobbin from, for example, cigarette paper.
• the fleece is spliced or glued accordingly.

Landscapes

• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Manufacturing Of Cigar And Cigarette Tobacco (AREA)
• Thermistors And Varistors (AREA)

Applications Claiming Priority (5)

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Family Applications (1)

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Citations (3)

Family Cites Families (5)

• 2001
  • 2001-03-27 DE DE10115120A patent/DE10115120A1/de not_active Withdrawn
  • 2001-08-25 DE DE10141784A patent/DE10141784A1/de not_active Withdrawn
• 2002
  • 2002-03-20 AT AT02706772T patent/ATE298986T1/de not_active IP Right Cessation
  • 2002-03-20 WO PCT/EP2002/003117 patent/WO2002076246A2/fr active IP Right Grant
  • 2002-03-20 JP JP2002574771A patent/JP2004521633A/ja active Pending
  • 2002-03-20 CN CN02807338XA patent/CN1215806C/zh not_active Expired - Fee Related
  • 2002-03-20 EP EP02706772A patent/EP1372416B1/fr not_active Expired - Lifetime
  • 2002-03-20 DE DE50203569T patent/DE50203569D1/de not_active Expired - Fee Related
  • 2002-03-20 AU AU2002240954A patent/AU2002240954A1/en not_active Abandoned
  • 2002-03-20 ES ES02706772T patent/ES2242845T3/es not_active Expired - Lifetime

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