EP2725138B2 - Procédé de fabrication et machine d'impression en héliogravure de fabrication de papier à cigarettes à bande ignifuge - Google Patents

Procédé de fabrication et machine d'impression en héliogravure de fabrication de papier à cigarettes à bande ignifuge Download PDF

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Publication number
EP2725138B2
EP2725138B2 EP12749859.0A EP12749859A EP2725138B2 EP 2725138 B2 EP2725138 B2 EP 2725138B2 EP 12749859 A EP12749859 A EP 12749859A EP 2725138 B2 EP2725138 B2 EP 2725138B2
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EP
European Patent Office
Prior art keywords
fire
retardant
cigarette paper
roller
printing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12749859.0A
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German (de)
English (en)
Other versions
EP2725138A2 (fr
EP2725138B1 (fr
EP2725138A4 (fr
Inventor
Qicheng WANG
Jinsong Li
Mingjin ZHOU
Ping Ma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mudanjiang Hengfeng Paper Co Ltd
Original Assignee
Mudanjiang Hengfeng Paper Co Ltd
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Application filed by Mudanjiang Hengfeng Paper Co Ltd filed Critical Mudanjiang Hengfeng Paper Co Ltd
Priority to PL12749859T priority Critical patent/PL2725138T5/pl
Publication of EP2725138A2 publication Critical patent/EP2725138A2/fr
Publication of EP2725138A4 publication Critical patent/EP2725138A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/003—Web printing presses
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/005—Treatment of cigarette paper
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0416—Drying webs by conduction
    • B41F23/042—Drying webs by conduction using heated rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/0025—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material
    • D21H5/003—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material with a roller
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/006—Controlling or regulating
    • D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
    • D21H5/0067—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with an essentially cylindrical body, e.g. roll or rod
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/26—Special paper or cardboard manufactured by dry method; Apparatus or processes for forming webs by dry method from mainly short-fibre or particle material, e.g. paper pulp
    • D21H5/265—Treatment of the formed web
    • D21H5/2657—Consolidation
    • D21H5/2671—Compression of the web, optionally with the use of a binder

Definitions

  • the present invention relates to a printing apparatus and producing method for cigarette paper, and more particularly to a gravure printing machine and method for producing a cigarette paper having fire-retardant band(s).
  • a cigarette butt can burn down boundless expanse of forest. There are countless fire cases generated by smoking.
  • a central temperature of a cigarette butt may be up to 700-800 C°, and a surface temperature of a burning cone thereof may be up to 300-500 C°, which is much higher than the burning point of general solid combustibles, such as paper and cloth, etc.
  • Cigarettes made of cigarette paper having fire-retardant bands have been applied to effectively improve security of the cigarettes (i.e., low ignition propensity).
  • a method for producing cigarette paper having fire-retardant band is to print a band-shaped fire-retardant coating with a certain interval on a base paper of cigarette paper. When a cigarette naturally burns into an area where the fire-retardant band is located, the fire-retardant band will absorb combustion heat and reduce the entry of oxygen such that the cigarette is self-extinguished, and if someone actively smokes when the cigarette naturally burns into the area where the fire-retardant band is located, the cigarette will acquire oxygen and continue burning.
  • the base paper of cigarette paper for producing the cigarette paper having fire-retardant band is a non-printing paper with special characteristics, such as small quantity and high permeability as possessed by the cigarette paper, so that it is difficult to produce qualified cigarette paper having fire-retardant bands by means of a general gravure printing machine.
  • the cigarette paper having fire-retardant bands is generally produced by printing the fire-retardant on the base paper of cigarette paper by means of the gravure printing machine.
  • the inventor through numerous producing experiments of the general gravure printing machine, finds that the produced cigarette paper having fire-retardant band has some disadvantages, such as wrinkling of paper sheets, large thickness of fire-retardant bands, and gradual decrease in printed amount of fire-retardant.
  • the wrinkling of paper sheets will affect the process of cutting the cigarette paper having fire-retardant bands into bobbin papers, affect the wrapping effect of the cigarette making machine, and also affect the appearance of finished cigarettes.
  • the large thickness of the fire-retardant bands will affect the disc diameter of the finished cigarette papers having fire-retardant bands, and also affect the wrapping of the cigarette making machine.
  • the gradual decrease in printed amount of fire-retardant will affect the fire-retardant effect of the cigarette paper having fire-retardant bands.
  • CA 2758463 A1 and EP0671505 A2 are examples of known method for processing cigarette paper webs.
  • An object of the present invention is to provide a gravure printing machine and a method for producing cigarette paper having fire-retardant bands, which can effectively solve the problems present in existing cigarette paper having fire-retardant bands such as wrinkling of paper sheets, overlarge thickness of the fire-retardant bands, and gradual decrease in printed amount of fire-retardant.
  • the present invention provides a gravure printing machine for producing a cigarette paper according to claim 1.
  • the gravure printing machine may further comprise a fire-retardant back-flow device that includes a fire-retardant feeding trough connected with the fire-retardant printing device and a back-flow tank connected with the fire-retardant feeding trough via a back-flow pipe.
  • the back-flow tank is also connected with the fire-retardant feeding trough via a feeding pump and a conduit, and the back-flow tank is also provided with a solvent supplement device.
  • a stirring device may be provided within the back-flow tank.
  • the drying cylinder may be connected with a steam heat source or an electrical heat source.
  • the lower press roller may be provided with a fluid heat source in the interior thereof.
  • Another object of the present invention is to provide a method for producing a cigarette paper having fire-retardant bands, comprising a step of printing the fire-retardant on a base paper of the cigarette paper.
  • the method further comprises the following steps: a drying step in which the cigarette paper is conveyed to at least a first stage drying area after the fire-retardant is printed thereon, and, in the first stage drying area, the cigarette paper is dried by means of a drying cylinder which is in close contact with a sheet of cigarette paper; and a pressing step in which the cigarette paper printed with the fire-retardant bands enters a pressing area after being dried, and then is pressed by the press roller to reduce the coating thickness of the fire-retardant band.
  • the method may further comprise a step of supplementing fire-retardant by arranging a fire-retardant back-flow tank and establishing a back-flow circulation between a fire-retardant feeding trough and the fire-retardant back-flow tank such that volatile solvent is supplemented to the fire-retardant in the back-flow tank to stabilize the concentration and viscosity of the fire-retardant.
  • a second stage drying area of infrared heating air is further provided such that the sheet of the cigarette paper enters the second drying area after passing through the first stage drying area of drying cylinder.
  • the pressing step may further comprise a step of heating the lower pressing roller by means of a fluid heat source.
  • the present invention has an advantage that with the gravure printing machine of the present invention, which incorporates a drying device in combination with a pressing device, the paper sheet firstly undergoes a drying process, and then experiences a pressing process.
  • the cigarette paper comes into tight contact with the drying cylinder after passing through a contact point between the printing machine roller and the rubber engaging roller, so that the friction force between the drying cylinder and the paper sheet will reduce the possibility of paper sheet deformation and wrinkling; and further, a certain pressure is exerted on the cigarette paper having fire-retardant bands by means of the upper and lower press rollers when the cigarette paper passes through an arrangement of the upper and lower press rollers, so as to reduce the coating thickness of the fire-retardant band effectively.
  • the fire-retardant bands 2 are printed on a cigarette paper 1 by means of a fire-retardant printing device, as shown in Fig. 1 .
  • the fire-retardant band 2 of the present invention has a width of 2-8mm.
  • the cigarette paper 1 is provided with at least two fire-retardant bands 2, in which two adjacent bands are spaced with respect to each other at a distance of 10-30mm.
  • the fire-retardant band 2 is in a shape of strip and has a width of 6mm, and the adjacent fire-retardant bands are spaced with a distance of 19mm.
  • the fire-retardant bands 2 When the cigarette naturally burns into an area where the fire-retardant bands 2 are located, the fire-retardant bands 2 will absorb combustion heat and reduce the entry of oxygen such that the cigarette is self-extinguished. Also, the security can be enhanced by providing with two or more fire-retardant bands 2 to improve retardant frequency. If someone smokes when the cigarette burns into the area of the fire-retardant bands, the cigarette may acquire oxygen and continue burning. It should be noted that the fire-retardant bands of the present invention are not suitable to be too narrow, otherwise, it is difficult to achieve a desired and safe fire-retardant effect. Of course, the fire-retardant bands of the present invention are not suitable to be too wide, otherwise, it will affect the smoker's smoking sense.
  • the gravure printing machine comprises a fire-retardant printing device, a drying device and a pressing device.
  • the fire-retardant printing device is used for printing the fire-retardant bands on the cigarette paper, and includes a printing machine roller 3 and a rubber engaging roller 10 arranged in parallel to and in contact with the printing machine roller.
  • the drying device comprises a drying cylinder 12 located downstream of the printing machine roller 3 and the rubber engaging roller 10.
  • the cigarette paper 11 comes into tight contact with the drying cylinder 12 after passing through a contact point between the printing machine roller 3 and the rubber engaging roller 10.
  • the rotational directions of the printing machine roller 3, the rubber engaging roller 10 and the drying cylinder 12 are shown as arrows in Fig. 3 .
  • the drying device further comprises a drying area of infrared heating air 13 located downstream of the drying cylinder 12, and thus a two-stage drying system including a first stage drying of drying cylinder and a second stage drying of infrared heating air can be formed, so that a better drying effect can be achieved with a lower cost.
  • the drying cylinder 12 is preferably connected with a steam heat source or an electrical heat source, by which a first stage drying process is performed with respect to the cigarette paper 11, and then the sheet of the cigarette paper 11 enters a second stage drying area of infrared heating air.
  • the pressing device comprises an upper press roller 14 and a lower press roller 15, which are arranged in parallel and contact with each other.
  • the cigarette paper passes through a contact point between the upper press roller 14 and the lower press roller 15.
  • the upper press roller 14 and the lower press roller 15 according to the present invention are not limited to “upper” and “lower” in physical location.
  • the upper press roller 14 is arranged on one side of the cigarette paper 11 and the lower press roller 15 is arranged on the other side thereof, and the rotational directions of the upper press roller 14 and the lower press roller 15 are shown as arrows in Fig. 4 .
  • the coating thickness of the fire-retardant band 2 is effectively decreased since a certain pressure is exerted on the cigarette paper by the upper press roller 14 and the lower press roller 15.
  • the upper press roller 14 is a rubber roller
  • the lower press roller 15 is a steel roller
  • a fluid heat source is provided inside of the lower press roller 15, for example, the interior of the lower press roller 15 is communicated with hot water for heating.
  • the fire-retardant bands 2 on the paper sheet of the cigarette paper 11 are softened by heating and then pressed so as to considerably reduce the thickness of the fire-retardant band 2 and improve smoothness of the surface of the fire-retardant band.
  • the gravure printing machine according to the present invention further comprises a fire-retardant back-flow device.
  • the fire-retardant back-flow device includes a fire-retardant feeding trough 4 connected with the printing machine roller 3 of the fire-retardant printing device and a back-flow tank 5 connected with the fire-retardant feeding trough 4 via a back-flow pipe 7.
  • the back-flow tank 5 is connected with the fire-retardant feeding trough 4 through a feeding pump 8 and a conduit, and the back-flow tank 5 is further provided with a solvent supplement device 9.
  • a back-flow circulation is established between the fire-retardant feeding trough 4 and the fire-retardant back-flow tank 5 in the embodiment of the present invention.
  • volatile organic solvent in the fire-retardant can be supplemented into the back-flow tank 5 to keep the concentration and viscosity of the fire-retardant constant so that the printed amount of fire-retardant can be maintained and the product quality can be ensured.
  • a stirring device 6 is further provided within the back-flow tank 5, such that various components of the fire-retardant within the back-flow tank 5 can be sufficiently stirred to make them uniformly distributed so as to further ensure stabilization of the fire-retardant printed amount. Therefore, the present invention can effectively solve the technical problem that the printed amount of fire-retardant is gradually deceased in the production circulation.
  • the present invention further provides a method for producing a cigarette paper having fire-retardant bands, comprising a step of printing the fire-retardant on a base paper of the cigarette paper.
  • the method further comprises the following steps: a drying step in which the cigarette paper is conveyed to at least a first stage drying area after the fire-retardant is printed thereon, and in the first stage drying area, the cigarette paper is dried by means of a drying cylinder which is in close contact with the sheet of the cigarette paper.
  • a second stage drying area of infrared heating air is further provided such that the sheet of the cigarette paper enters the second drying area after passing through the first stage drying area of drying cylinder.
  • the method according to the present invention further comprises a pressing step in which the cigarette paper printed with the fire-retardant bands enters the press area after being dried, and is pressed by the press roller to reduce the thickness of the coating of the fire-retardant bands. More preferably, in the pressing step, a step of heating the lower press roller 15 through the fluid heat source is further included.
  • the method according to the present invention further comprises a step of supplementing the fire-retardant.
  • a fire-retardant back-flow tank By arranging a fire-retardant back-flow tank and establishing a back-flow circulation between the fire-retardant feeding trough and the fire-retardant back-flow tank, volatile solvent is supplemented to the fire-retardant in the back-flow tank to stabilize the concentration and viscosity of the fire-retardant.
  • a back-flow circulation of the fire-retardant is employed to effectively overcome the disadvantage present in current process that the fire-retardant printed amount is gradually decreased.
  • a back-flow circulation is established between the fire-retardant feeding trough 4 and the fire-retardant back-flow tank 5.
  • the back-flow tank 5 is provided with a stirring device 6 to sufficiently stir various components of the fire-retardant within the back-flow tank 5 to make them uniformly distributed, so as to further ensure stabilization of the printed amount of the fire-retardant. Therefore, the present invention can effectively solve the technical problem that the fire-retardant printed amount is gradually deceased in the production circulation.
  • the present invention employs the combination of the first stage drying process of drying cylinder and the second drying process of infrared heating air.
  • the base paper of cigarette paper is firstly printed with the fire-retardant by means of a printing plate, and then enters the first stage drying area, i.e., the first drying area of drying cylinder in which the drying cylinder can be heated by steam or electricity. Since the paper sheet closely adheres to the drying cylinder to be heated, generation of the paper sheet deformation and wrinkling is reduced by the friction force between the drying cylinder and the paper sheets, and thereafter, the paper sheets enters the second stage drying area of infrared heating air.
  • the method according to the present invention can solve the technical problem that the thickness of the fire-retardant band is too large by using the pressing step of the press roller.
  • the cigarette paper having the fire-retardant bands enters the pressing area after being dried; and preferably, the press roller is composed of a rubber roller and a steel roller which is communicated with hot water for heating in its interior.
  • the coating of the fire-retardant band can be softened by the heating effect of the steel roller, and the thickness of the coating of the fire-retardant can be effectively reduced by applying a certain pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)

Claims (8)

  1. Machine d'héliogravure pour produire un papier à cigarette ayant des bandes ignifuges, comprenant un dispositif d'impression de produit ignifuge pour imprimer les bandes ignifuges sur le papier à cigarette et comprenant un rouleau de machine d'impression (3) et un rouleau de mise en prise en caoutchouc (10) agencé parallèlement à et en contact avec le rouleau de machine d'impression ; et un dispositif de séchage comprenant un cylindre de séchage (12), le papier à cigarette venant en contact étroit avec le cylindre de séchage (12) après être passé par un point de contact entre le rouleau de machine d'impression (3) et le rouleau de mise en prise en caoutchouc (10), caractérisée en ce que le cylindre de séchage est positionné en aval du rouleau de machine d'impression (3) et du rouleau de mise en prise en caoutchouc (10), le dispositif de séchage comprend en outre une zone de séchage d'air chauffant à infrarouge (13) positionnée en aval du cylindre de séchage (12) ; et la machine d'héliogravure comprend en outre un dispositif de pression comprenant un rouleau de presse supérieur (14) et un rouleau de presse inférieur (15) agencé parallèlement à et en contact avec le rouleau de presse supérieur, le papier à cigarette passant par un point de contact entre le rouleau de presse supérieur (14) et le rouleau de presse inférieur (15).
  2. Machine d'héliogravure selon la revendication 1, caractérisée en ce que la machine d'héliogravure comprend en outre un dispositif de refoulement de produit ignifuge qui comprend une goulotte d'alimentation de produit ignifuge (4) raccordée au dispositif d'impression de produit ignifuge et un réservoir de refoulement (5) raccordé à la goulotte d'alimentation de produit ignifuge (4) via un tuyau de refoulement (7), le réservoir de refoulement (5) étant raccordé avec la goulotte d'alimentation de produit ignifuge (4) via une pompe d'alimentation (8) et un conduit et le réservoir de refoulement (5) étant prévu avec un dispositif d'ajout de solvant (9).
  3. Machine d'héliogravure selon la revendication 2, caractérisée en ce qu'un dispositif d'agitation (6) est prévu à l'intérieur du réservoir de refoulement (5).
  4. Machine d'héliogravure selon la revendication 1, caractérisée en ce que le cylindre de séchage (12) est raccordé à une source de chauffage par vapeur ou une source de chauffage électrique.
  5. Machine d'héliogravure selon la revendication 1, caractérisée en ce qu'une source de chauffage par fluide est prévue à l'intérieur du rouleau de pression inférieur (15) .
  6. Procédé pour produire des papiers à cigarette ayant des bandes ignifuges, comprenant une étape consistant à imprimer le produit ignifuge sur un papier de base du papier à cigarette et une étape de séchage dans laquelle le papier à cigarette est transporté vers au moins une zone de séchage de premier étage après que le produit ignifuge a été imprimé sur ce dernier, caractérisé en ce que : à l'étape de séchage, le papier à cigarette est séché dans la zone de séchage de premier étage au moyen d'un cylindre de séchage qui est en contact immédiat avec une feuille de papier à cigarette, une zone de séchage de second étage d'air chauffant infrarouge étant en outre prévue, et la feuille de papier à cigarette entrant dans la zone de séchage de second étage après être passée par la zone de séchage de premier étage du cylindre de séchage ; et
    le procédé comprend en outre une étape de pression, dans laquelle le papier à cigarette imprimé avec les bandes ignifuges entre dans une zone de pression après avoir été séché et est pressé par un rouleau de pression afin de réduire l'épaisseur de revêtement des bandes ignifuges.
  7. Procédé pour produire des papiers à cigarette ayant des bandes ignifuges selon la revendication 6, caractérisé en ce que le procédé comprend en outre une étape consistant à ajouter du produit ignifuge en agençant un réservoir de refoulement de produit ignifuge et en établissant une circulation de refoulement entre une goulotte d'alimentation de produit ignifuge et le réservoir de refoulement de produit ignifuge, de sorte que le solvant volatil soit ajouté au produit ignifuge dans le réservoir de refoulement afin de stabiliser la concentration et la viscosité du produit ignifuge.
  8. Procédé pour produire des papiers à cigarette ayant des bandes ignifuges selon la revendication 6, caractérisée en ce que l'étape de pression comprend en outre une étape consistant à chauffer un rouleau de pression inférieur (15) au moyen d'une source de chauffage par fluide.
EP12749859.0A 2011-12-02 2012-04-20 Procédé de fabrication et machine d'impression en héliogravure de fabrication de papier à cigarettes à bande ignifuge Active EP2725138B2 (fr)

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CN2011103936857A CN102501570B (zh) 2011-12-02 2011-12-02 一种生产具有阻燃带的卷烟纸的凹版印刷机及生产方法
PCT/CN2012/074412 WO2012113355A2 (fr) 2011-12-02 2012-04-20 Procédé de fabrication et machine d'impression en héliogravure de fabrication de papier à cigarettes à bande ignifuge

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KR20140039189A (ko) 2014-04-01
RU2569774C1 (ru) 2015-11-27
HK1171720A1 (en) 2013-04-05
CN102501570B (zh) 2013-10-30
JP2014519994A (ja) 2014-08-21
WO2012113355A4 (fr) 2013-05-30
EP2725138A2 (fr) 2014-04-30
WO2012113355A2 (fr) 2012-08-30
KR101552492B1 (ko) 2015-09-11
ES2610558T5 (es) 2020-02-27
WO2012113355A3 (fr) 2012-10-18
EP2725138B1 (fr) 2016-10-12
PL2725138T5 (pl) 2019-11-29
ZA201308545B (en) 2014-08-27
PL2725138T3 (pl) 2017-07-31
EP2725138A4 (fr) 2015-09-09
ES2610558T3 (es) 2017-04-28
TW201322931A (zh) 2013-06-16
CN102501570A (zh) 2012-06-20
TWI505784B (fr) 2015-11-01

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