ES2610558T3 - Rotogravure press to make smoking paper with fire retardant bands and manufacturing method for it - Google Patents
Rotogravure press to make smoking paper with fire retardant bands and manufacturing method for it Download PDFInfo
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- ES2610558T3 ES2610558T3 ES12749859.0T ES12749859T ES2610558T3 ES 2610558 T3 ES2610558 T3 ES 2610558T3 ES 12749859 T ES12749859 T ES 12749859T ES 2610558 T3 ES2610558 T3 ES 2610558T3
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Classifications
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- 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
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- 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
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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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
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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
- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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)
Abstract
Máquina de impresión de huecograbado para producir un papel de fumar que tiene bandas ignífugas, que comprende un dispositivo de impresión de sustancia ignífuga para imprimir las bandas ignífugas en el papel de fumar y que incluye un rodillo de máquina de impresión (3) y un rodillo de enganche de caucho (10) dispuesto en paralelo a y en contacto con el rodillo de máquina de impresión; y un dispositivo de secado que incluye un cilindro de secado (12), entrando el papel de fumar en contacto estrecho con el cilindro de secado (12) tras pasar por un punto de contacto entre el rodillo de máquina de impresión (3) y el rodillo de enganche de caucho (10), caracterizada porque el cilindro de secado se sitúa aguas abajo del rodillo de máquina de impresión (3) y el rodillo de enganche de caucho (10), el dispositivo de secado incluye además una zona de secado de aire de calentamiento infrarrojo (13) situado aguas abajo del cilindro de secado (12); y la máquina de impresión de huecograbado comprende además un dispositivo de prensado que incluye un rodillo de prensado superior (14) y un rodillo de prensado inferior (15) dispuesto en paralelo a y en contacto con el rodillo de prensado superior, pasando el papel de fumar por un punto de contacto entre el rodillo de prensado superior (14) y el rodillo de prensado inferior (15).Gravure printing machine for producing a smoking paper having fire retardant bands, comprising a fire retardant substance printing device for printing the flame retardant bands on the smoking paper and including a printing machine roller (3) and a roller of rubber coupling (10) arranged in parallel to and in contact with the printing machine roller; and a drying device that includes a drying cylinder (12), the smoking paper coming into close contact with the drying cylinder (12) after passing through a contact point between the printing machine roller (3) and the rubber hitch roller (10), characterized in that the drying cylinder is located downstream of the printing machine roller (3) and the rubber hitch roller (10), the drying device further includes a drying zone of infrared heating air (13) located downstream of the drying cylinder (12); and the gravure printing machine further comprises a pressing device that includes an upper pressing roller (14) and a lower pressing roller (15) arranged in parallel to and in contact with the upper pressing roller, passing the smoking paper by a point of contact between the upper pressing roller (14) and the lower pressing roller (15).
Description
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DESCRIPCIONDESCRIPTION
Prensa de huecograbado para fabricar papel de fumar con bandas igmfugas y metodo de fabricacion para el mismo Campo tecnicoGravure press to manufacture smoking paper with fireproof bands and manufacturing method for the same Technical field
La presente invencion se refiere a un aparato de impresion y metodo de produccion para papel de fumar, y mas particularmente a una maquina de impresion de huecograbado y metodo para producir un papel de fumar que tiene banda(s) igmfuga(s).The present invention relates to a printing apparatus and production method for smoking paper, and more particularly to a gravure printing machine and method for producing a smoking paper having a fireproof band (s).
AntecedentesBackground
Una colilla de cigarrillo puede quemar una extension sin lfmite de bosques. Hay innumerables casos de incendios generados por fumar. Una temperatura central de una colilla de cigarrillo puede ser de hasta 700-800°C, y una temperatura de superficie de un cono quemandose de la misma puede ser de hasta 300-500°C, que es muy superior al punto de ignicion de combustibles solidos generales, tales como papel y tela, etc.A cigarette butt can burn an extension without forest limits. There are countless cases of fires generated by smoking. A central temperature of a cigarette butt can be up to 700-800 ° C, and a surface temperature of a cone burning from it can be up to 300-500 ° C, which is much higher than the ignition point of fuels general solids, such as paper and cloth, etc.
Los cigarrillos hechos de papel de fumar que tienen bandas ignifugas se han aplicado para mejorar de manera eficaz la seguridad de los cigarrillos (es decir, baja tendencia a la ignicion). Un metodo para producir papel de fumar que tiene una banda igmfuga es imprimir un recubrimiento igmfugo en forma de banda con un cierto intervalo en un papel base de papel de fumar. Cuando un cigarrillo se quema de manera natural en una zona en la que se situa la banda igmfuga, la banda igmfuga absorbera calor de combustion y reducira la entrada de oxfgeno de modo que el cigarrillo se extingue por sf solo, y si alguien fuma activamente cuando el cigarrillo se quema naturalmente en la zona en la que se situa la banda igmfuga, el cigarrillo adquirira oxfgeno y continuara quemandose.Cigarettes made of cigarette paper that have fire retardant bands have been applied to effectively improve the safety of cigarettes (i.e. low ignition tendency). One method of producing smoking paper having an igmfuga band is to print an igmfugo coating in the form of a band with a certain interval on a base paper of smoking paper. When a cigarette burns naturally in an area where the igmfuga band is located, the igmfuga band will absorb combustion heat and reduce the oxygen input so that the cigarette is extinguished by itself, and if someone actively smokes when the cigarette burns naturally in the area where the igmfuga band is located, the cigarette will acquire oxygen and continue to burn.
El papel base de papel de fumar para producir el papel de fumar que tiene banda igmfuga es un papel de no impresion con caractensticas especiales, tales como pequena cantidad y alta permeabilidad tal como posee el papel de fumar, de modo que es diffcil producir papel de fumar cualificado que tiene bandas igmfugas mediante una maquina de impresion de huecograbado general. Espedficamente, el papel de fumar que tiene bandas igmfugas se produce generalmente mediante la impresion de la sustancia igmfuga en el papel base de papel de fumar mediante la maquina de impresion de huecograbado. Sin embargo, el inventor, a traves de numerosos experimentos de produccion de la maquina de impresion de huecograbado general, encuentra que el papel de fumar producido que tiene banda igmfuga tiene algunas desventajas, tales como el arrugado de hojas de papel, gran espesor de bandas igmfugas, y disminucion gradual en cantidad impresa de sustancia igmfuga.The base paper of smoking paper to produce the smoking paper having an igmfuga band is a non-printing paper with special features, such as small quantity and high permeability such as smoking paper, so that it is difficult to produce Qualified smoking that has fireproof bands using a general gravure printing machine. Specifically, the smoking paper having igmfugal bands is generally produced by printing the igmfuga substance on the base paper of smoking paper by the gravure printing machine. However, the inventor, through numerous production experiments of the general gravure printing machine, finds that the produced smoking paper having an igmfuga band has some disadvantages, such as crumpled paper sheets, large thickness of bands igmfugas, and gradual decrease in printed quantity of igmfuga substance.
El arrugado de hojas de papel afectara el proceso de cortar el papel de fumar que tiene bandas igmfugas en papeles de bobina, afectara al efecto de envuelta de la maquina de hacer cigarrillos, y tambien afectara al aspecto de los cigarrillos acabados. El gran espesor de las bandas igmfugas afectara al diametro de disco de los papeles de fumar acabados que tienen bandas igmfugas, y tambien afectara a la envuelta de la maquina de hacer cigarrillos. La disminucion gradual en la cantidad impresa de sustancia igmfuga afectara al efecto igmfugo del papel de fumar que tiene bandas igmfugas.The wrinkling of sheets of paper will affect the process of cutting the smoking paper that has fireproof bands on roll papers, will affect the wrapping effect of the cigarette maker, and will also affect the appearance of the finished cigarettes. The great thickness of the fireproof bands will affect the disc diameter of the finished smoking papers that have fireproof bands, and will also affect the envelope of the cigarette making machine. The gradual decrease in the printed amount of igmfuga substance will affect the igmfugo effect of the smoking paper that has igmfuga bands.
Los documentos CA 2758463 A1 y EP0671505 A2 son ejemplos de metodos conocidos para procesar bandas continuas de papel de fumar.Documents CA 2758463 A1 and EP0671505 A2 are examples of known methods for processing continuous bands of cigarette paper.
Sumario de la invencionSummary of the invention
Un objeto de la presente invencion es proporcionar una maquina de impresion de huecograbado y un metodo para producir papel de fumar que tiene bandas igmfugas, que puede resolver de manera eficaz los problemas presentes en papel de fumar que tiene bandas igmfugas existente tales como el arrugado de hojas de papel, espesor demasiado grande de las bandas igmfugas, y disminucion gradual en cantidad impresa de sustancia igmfuga.An object of the present invention is to provide a gravure printing machine and a method for producing smoking paper having fireproof bands, which can effectively solve the problems present in smoking paper having existing fireproof bands such as wrinkling of sheets of paper, too large thickness of the fireproof bands, and gradual decrease in printed quantity of fireproof substance.
Para lograr el anterior objeto, la presente invencion proporciona una maquina de impresion de huecograbado para producir un papel de fumar segun la reivindicacion 1.To achieve the above object, the present invention provides a gravure printing machine for producing a smoking paper according to claim 1.
Preferiblemente, la maquina de impresion de huecograbado puede comprender ademas un dispositivo de reflujo de sustancia igmfuga que incluye una cuba de alimentacion de sustancia igmfuga conectada al dispositivo de impresion de sustancia igmfuga y un tanque de reflujo conectado con la cuba de alimentacion de sustancia igmfuga a traves de una tubena de reflujo. El tanque de reflujo tambien esta conectado a la cuba de alimentacion de sustancia igmfuga a traves de una bomba de alimentacion y un conducto, y el tanque de reflujo tambien esta dotado de un dispositivo de suministro de disolvente.Preferably, the rotogravure printing machine may further comprise an igmfuga substance reflux device that includes an igmfuga substance feeding tank connected to the igmfuga substance printing device and a reflux tank connected to the igmfuga substance feeding tank a through a tube of reflux. The reflux tank is also connected to the igmfuga substance feed tank through a feed pump and a conduit, and the reflux tank is also provided with a solvent supply device.
Mas preferiblemente, puede proporcionarse un dispositivo de agitacion dentro del tanque de reflujo.More preferably, an agitation device can be provided inside the reflux tank.
Preferiblemente, el dispositivo de secado puede comprender ademas una zona de secado de aire de calentamiento infrarrojo situado aguas abajo del cilindro de secado.Preferably, the drying device may further comprise an infrared heating air drying zone located downstream of the drying cylinder.
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Mas preferiblemente, el cilindro de secado puede conectarse con una fuente de calor de vapor de agua o una fuente de calor electrica.More preferably, the drying cylinder can be connected to a water vapor heat source or an electric heat source.
Preferiblemente, el rodillo de prensado inferior puede estar dotado con una fuente de calor de fluido en el interior del mismo.Preferably, the lower press roller may be provided with a fluid heat source inside it.
Otro objeto de la presente invencion es proporcionar un metodo para producir un papel de fumar que tiene bandas igmfugas, que comprende una etapa de imprimir la sustancia igmfuga en un papel base del papel de fumar. El metodo comprende ademas las siguientes etapas: una etapa de secado en la que el papel de fumar se transporta a al menos una zona de secado de primera fase despues de que se imprima la sustancia ignifuga en el mismo, y, en la zona de secado de primera fase, el papel de fumar se seca mediante un cilindro de secado que esta en contacto estrecho con una hoja de papel de fumar; y una etapa de prensado en la que el papel de fumar imprimido con las bandas igmfugas entra en una zona de prensado tras secarse, y entonces se presiona mediante el rodillo de prensado para reducir el espesor de recubrimiento de la banda igmfuga.Another object of the present invention is to provide a method for producing a smoking paper having fireproof bands, which comprises a step of printing the fireproof substance on a base paper of the smoking paper. The method further comprises the following stages: a drying stage in which the smoking paper is transported to at least one first-stage drying zone after the flame retardant substance is printed therein, and, in the drying zone In the first phase, the smoking paper is dried by means of a drying cylinder that is in close contact with a sheet of smoking paper; and a pressing stage in which the smoking paper printed with the fireproof bands enters a pressing zone after drying, and then is pressed by the pressing roller to reduce the coating thickness of the igmfuga band.
Preferiblemente, el metodo puede comprender ademas una etapa de suministrar un tanque de reflujo de sustancia igmfuga y establecer una circulacion de reflujo entre una cuba de alimentacion de sustancia igmfuga y el tanque de reflujo de sustancia igmfuga de modo que se suministra disolvente volatil a la sustancia igmfuga en el tanque de reflujo para estabilizar la concentracion y la viscosidad de la sustancia igmfuga.Preferably, the method may further comprise a step of supplying a reflux tank of igmfuga substance and establishing a reflux circulation between a feeding tank of igmfuga substance and the reflux tank of igmfuga substance so that volatile solvent is supplied to the substance igmfuga in the reflux tank to stabilize the concentration and viscosity of the igmfuga substance.
Preferiblemente, en la etapa de secado, puede proporcionarse ademas una zona de secado de segunda fase de aire de calentamiento infrarrojo de modo que la hoja del papel de fumar entra en la segunda zona de secado tras pasar por la zona de secado de primera fase de cilindro de secado.Preferably, in the drying stage, an infrared heating second phase drying zone can also be provided so that the sheet of the smoking paper enters the second drying zone after passing through the first phase drying zone of drying cylinder
Preferiblemente, la etapa de prensado puede comprender ademas una etapa de calentar el rodillo de prensado inferior mediante una fuente de calor de fluido.Preferably, the pressing stage may further comprise a step of heating the lower pressing roller by means of a fluid heat source.
Basandose en las soluciones tecnicas anteriores, la presente invencion tiene una ventaja de que con la maquina de impresion de huecograbado de la presente invencion, que incorpora un dispositivo de secado en combinacion con un dispositivo de prensado, la hoja de papel experimenta en primer lugar un proceso de secado, y entonces experimenta un proceso de prensado. El papel de fumar entra en contacto estrecho con el cilindro de secado tras pasar por un punto de contacto entre el rodillo de la maquina de impresion y el rodillo de enganche de caucho, de modo que la fuerza de rozamiento entre el cilindro de secado y la hoja de papel reducira la posibilidad de deformacion y el arrugado de la hoja de papel; y ademas, se ejerce una cierta presion sobre el papel de fumar que tiene bandas igmfugas mediante los rodillos de prensado superior e inferior cuando el papel de fumar pasa por una disposicion de los rodillos de prensado superior e inferior, para reducir el espesor de recubrimiento de la banda igmfuga de manera eficaz.Based on the prior technical solutions, 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 first experiences a Drying process, and then undergo a pressing process. The smoking paper comes into close contact with the drying cylinder after passing through a contact point between the printing machine roller and the rubber coupling roller, so that the frictional force between the drying cylinder and the paper sheet will reduce the possibility of deformation and wrinkling of the paper sheet; and also, a certain pressure is exerted on the smoking paper having fireproof bands by means of the upper and lower pressing rollers when the smoking paper passes through an arrangement of the upper and lower pressing rollers, to reduce the coating thickness of The igmfuga band effectively.
Breve descripcion de los dibujosBrief description of the drawings
Los dibujos adjuntos, que se incluyen para proporcionar una comprension adicional de la divulgacion y constituyen una parte de esta solicitud, ilustran realizacion(es) de la divulgacion y junto con la descripcion sirven para explicar el principio de la divulgacion pero no constituyen una definicion impropia a la presente invencion. En los dibujos:The accompanying drawings, which are included to provide an additional understanding of the disclosure and constitute a part of this application, illustrate embodiment (s) of the disclosure and together with the description serve to explain the principle of the disclosure but do not constitute an improper definition. to the present invention. In the drawings:
La figural es una vista esquematica que muestra un cigarrillo envuelto por un papel de fumar que tiene bandas igmfugas de la presente invencion;The figural is a schematic view showing a cigarette wrapped by a smoking paper having fireproof bands of the present invention;
la figura 2 es una vista esquematica estructural que muestra un dispositivo de reflujo de sustancia igmfuga de la presente invencion;Figure 2 is a structural schematic view showing a reflux device of fireproof substance of the present invention;
la figura 3 es una vista esquematica estructural que muestra un dispositivo de secado de la presente invencion; y la figura 4 es una vista esquematica estructural que muestra un dispositivo de prensado de la presente invencion. Descripcion detallada de las realizacionesFigure 3 is a structural schematic view showing a drying device of the present invention; and Figure 4 is a structural schematic view showing a pressing device of the present invention. Detailed description of the achievements
A continuacion en el presente documento, la presente invencion se describira en detalle con referencia a realizaciones preferidas en conjuncion con los dibujos adjuntos.Hereinafter, the present invention will be described in detail with reference to preferred embodiments in conjunction with the accompanying drawings.
Tal como se muestra en las figuras 1, 3 y 4, se describe una realizacion preferida de una maquina de impresion de huecograbado para producir un papel de fumar que tiene bandas igmfugas segun la presente invencion. Las bandas igmfugas 2 se imprimen en un papel de fumar 1 mediante un dispositivo de impresion de sustancia igmfuga, tal como se muestra en la figura 1. La banda igmfuga 2 de la presente invencion tiene una anchura de 2-8 mm. Preferiblemente, el papel de fumar 1 esta dotado de al menos dos bandas igmfugas 2, en el que dos bandas adyacentes estan separadas entre sf por una distancia de 10-30 mm. Preferiblemente, en esta realizacion, la bandaAs shown in Figures 1, 3 and 4, a preferred embodiment of a gravure printing machine for producing a smoking paper having fireproof bands according to the present invention is described. The fireproof bands 2 are printed on a smoking paper 1 by means of a printing device of fireproof substance, as shown in Figure 1. The fireproof band 2 of the present invention has a width of 2-8 mm. Preferably, the smoking paper 1 is provided with at least two fireproof bands 2, in which two adjacent bands are separated from each other by a distance of 10-30 mm. Preferably, in this embodiment, the band
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igmfuga 2 esta en forma de una tira y tiene una anchura de 6 mm, y las bandas igmfugas adyacentes estan separadas por una distancia de 19 mm.igmfuga 2 is in the form of a strip and has a width of 6 mm, and the adjacent igmfuga bands are separated by a distance of 19 mm.
Cuando el cigarrillo se quema de manera natural en una zona en la que se situan las bandas igmfugas 2, las bandas igmfugas 2 absorberan calor de combustion y reduciran la entrada de oxfgeno de modo que el cigarrillo se extingue por sf solo. Tambien, puede potenciarse la seguridad proporcionando dos o mas bandas igmfugas 2 para mejorar la frecuencia igmfuga. Si alguien fuma cuando el cigarrillo se quema en la zona de las bandas igmfugas, el cigarrillo puede adquirir oxfgeno y continuar quemandose. Debe observarse que las bandas igmfugas de la presente invencion no son adecuadas para ser demasiado estrechas, de otro modo es diffcil lograr un efecto igmfugo deseado y seguro. Naturalmente, las bandas igmfugas de la presente invencion no son adecuadas para ser demasiado anchas, de otro modo afectana el sentido de fumar del fumador.When the cigarette burns naturally in an area where the fireproof bands 2 are located, the fireproof bands 2 will absorb combustion heat and reduce the oxygen input so that the cigarette extinguishes on its own. Also, safety can be enhanced by providing two or more fireproof bands 2 to improve the fireproof frequency. If someone smokes when the cigarette burns in the area of the fireproof bands, the cigarette can acquire oxygen and continue to burn. It should be noted that the fireproof bands of the present invention are not suitable for being too narrow, otherwise it is difficult to achieve a desired and safe fireproofing effect. Naturally, the fireproof bands of the present invention are not suitable for being too wide, otherwise it will affect the smoker's sense of smoking.
Tal como se muestra en la figura 3, la maquina de impresion de huecograbado segun la presente invencion comprende un dispositivo de impresion de sustancia igmfuga, un dispositivo de secado y un dispositivo de prensado. El dispositivo de impresion de sustancia igmfuga se usa para imprimir las bandas igmfugas en el papel de fumar, e incluye un rodillo de maquina de impresion 3 y un rodillo de enganche de caucho 10 dispuesto en paralelo a y en contacto con el rodillo de maquina de impresion. El dispositivo de secado comprende un cilindro de secado 12 situado aguas abajo del rodillo de maquina de impresion 3 y el rodillo de enganche de caucho 10. El papel de fumar 11 entra en contacto estrecho con el cilindro de secado 12 tras pasar por un punto de contacto entre el rodillo de maquina de impresion 3 y el rodillo de enganche de caucho 10. Las direcciones rotacionales del rodillo de maquina de impresion 3, el rodillo de enganche de caucho 10 y el cilindro de secado 12 se muestran como flechas en la figura 3. Con una configuracion tal, la fuerza de rozamiento entre el cilindro de secado 12 y la hoja de papel del papel de fumar 11 permite reducir considerablemente la posibilidad de deformacion y arrugado de la hoja de papel. Preferiblemente, el dispositivo de secado comprende ademas una zona de secado de aire de calentamiento infrarrojo 13 situado aguas abajo del cilindro de secado 12, y por tanto puede formarse un sistema de secado de dos fases que incluye un secado de primera fase de cilindro de secado y un secado de segunda fase de aire de calentamiento infrarrojo, de modo que puede lograrse un mejor efecto de secado con un menor coste.As shown in Fig. 3, the gravure printing machine according to the present invention comprises a printing device of fireproof substance, a drying device and a pressing device. The igmfuga substance printing device is used to print the fireproof bands on the smoking paper, and includes a printing machine roller 3 and a rubber hitch 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 hitch roller 10. The smoking paper 11 comes into close contact with the drying cylinder 12 after passing through a point of contact between the printing machine roller 3 and the rubber hitch roller 10. The rotational directions of the printing machine roller 3, the rubber hitch roller 10 and the drying cylinder 12 are shown as arrows in Figure 3 With such a configuration, the frictional force between the drying cylinder 12 and the paper sheet of the smoking paper 11 makes it possible to considerably reduce the possibility of deformation and wrinkling of the paper sheet. Preferably, the drying device further comprises an infrared heating air drying zone 13 located downstream of the drying cylinder 12, and therefore a two phase drying system can be formed which includes a first phase drying of the drying cylinder and a second phase drying of infrared heating air, so that a better drying effect can be achieved at a lower cost.
Ademas, el cilindro de secado 12 preferiblemente se conecta a una fuente de calor de vapor de agua o una fuente de calor electrica, mediante la que se realiza un proceso de secado de primera fase con respecto al papel de fumar 11, y entonces la hoja del papel de fumar 11 entra en una zona de secado de segunda fase de aire de calentamiento infrarrojo.In addition, the drying cylinder 12 is preferably connected to a water vapor heat source or an electric heat source, whereby a first phase drying process is performed with respect to the smoking paper 11, and then the sheet of the smoking paper 11 enters a second phase drying zone of infrared heating air.
Tal como se muestra en la figura 4, el dispositivo de prensado segun la presente invencion comprende un rodillo de prensado superior 14 y un rodillo de prensado inferior 15, que se disponen en paralelo y en contacto entre sf. El papel de fumar pasa por un punto de contacto entre el rodillo de prensado superior 14 y el rodillo de prensado inferior 15. En el presente documento, el rodillo de prensado superior 14 y el rodillo de prensado inferior 15 segun la presente invencion no se limitan a “superior” e “inferior” en ubicacion ffsica. Los expertos en la tecnica entenderan que el rodillo de prensado superior 14 se dispone en un lado del papel de fumar 11 y el rodillo de prensado inferior 15 se dispone en el otro lado del mismo, y las direcciones rotacionales del rodillo de prensado superior 14 y el rodillo de prensado inferior 15 se muestran como flechas en la figura 4. El espesor de recubrimiento de la banda igmfuga 2 se disminuye de manera eficaz ya que se ejerce una cierta presion sobre el papel de fumar mediante el rodillo de prensado superior 14 y el rodillo de prensado inferior 15.As shown in Figure 4, the pressing device according to the present invention comprises an upper pressing roller 14 and a lower pressing roller 15, which are arranged in parallel and in contact with each other. The smoking paper passes through a contact point between the upper pressing roller 14 and the lower pressing roller 15. Here, the upper pressing roller 14 and the lower pressing roller 15 according to the present invention are not limited to "superior" and "inferior" in physical location. Those skilled in the art will understand that the upper pressing roller 14 is disposed on one side of the smoking paper 11 and the lower pressing roller 15 is disposed on the other side thereof, and the rotational directions of the upper pressing roller 14 and the lower pressing roller 15 is shown as arrows in figure 4. The coating thickness of the igmfuga band 2 is effectively reduced since a certain pressure is exerted on the smoking paper by the upper pressing roller 14 and the lower press roller 15.
Preferiblemente, el rodillo de prensado superior 14 es un rodillo de caucho, y el rodillo de prensado inferior 15 es un rodillo de acero. Se proporciona una fuente de calor de fluido dentro del rodillo de prensado inferior 15, por ejemplo, el interior del rodillo de prensado inferior 15 esta comunicado con agua caliente para el calentamiento. En el presente documento, las bandas igmfugas 2 en la hoja de papel del papel de fumar 11 se ablandan por calentamiento y entonces se presionan para reducir considerablemente el espesor de la banda igmfuga 2 y mejorar la suavidad de la superficie de la banda igmfuga.Preferably, the upper pressing roller 14 is a rubber roller, and the lower pressing roller 15 is a steel roller. A source of fluid heat is provided within the lower pressing roller 15, for example, the interior of the lower pressing roller 15 is communicated with hot water for heating. Here, the fireproof bands 2 on the sheet of paper of the smoking paper 11 are softened by heating and then pressed to considerably reduce the thickness of the fireproofing band 2 and improve the smoothness of the surface of the fireproofing band.
Tal como se muestra en la figura 2, preferiblemente, la maquina de impresion de huecograbado segun la presente invencion comprende ademas un dispositivo de reflujo de sustancia igmfuga. El dispositivo de reflujo de sustancia igmfuga incluye una cuba de alimentacion de sustancia igmfuga 4 conectada al rodillo de maquina de impresion 3 del dispositivo de impresion de sustancia igmfuga y un tanque de reflujo 5 conectado a la cuba de alimentacion de sustancia igmfuga 4 a traves de una tubena de reflujo 7. El tanque de reflujo 5 esta conectado a la cuba de alimentacion de sustancia igmfuga 4 a traves de una bomba de alimentacion 8 y un conducto, y el tanque de reflujo 5 esta ademas dotado de un dispositivo de suministro de disolvente 9. Con una configuracion tal, se establece una circulacion de reflujo entre la cuba de alimentacion de sustancia igmfuga 4 y el tanque de reflujo de sustancia igmfuga 5 en la realizacion de la presente invencion. Por consiguiente, puede suministrarse disolvente organico volatil en la sustancia igmfuga al interior del tanque de reflujo 5 para mantener la concentracion y viscosidad de la sustancia igmfuga constantes de modo que puede mantenerse la cantidad impresa de sustancia igmfuga y puede garantizarse la calidad del producto. Preferiblemente, un dispositivo de agitacion 6 esta previsto ademas dentro del tanque de reflujo 5, de modo que varios componentes de la sustancia igmfuga dentro del tanque de reflujo 5 pueden agitarse suficientemente para que estan uniformemente distribuidos para garantizar adicionalmente la estabilizacion de la cantidad impresa de sustancia igmfuga. Por tanto, la presente invencion puede resolver de manera eficaz elAs shown in Figure 2, preferably, the gravure printing machine according to the present invention further comprises a reflux device of fireproof substance. The igmfuga substance reflux device includes an igmfuga substance feeding tank 4 connected to the printing machine roller 3 of the igmfuga substance printing device and a reflux tank 5 connected to the igmfuga substance feeding tank 4 through a reflux pipe 7. The reflux tank 5 is connected to the feeding tank of fireproof substance 4 through a feed pump 8 and a conduit, and the reflux tank 5 is further provided with a solvent supply device 9. With such a configuration, a reflux circulation is established between the fireproofing substance feed tank 4 and the fireproofing substance reflux tank 5 in the embodiment of the present invention. Accordingly, volatile organic solvent can be supplied in the igmfuga substance into the reflux tank 5 to keep the concentration and viscosity of the igmfuga substance constant so that the printed quantity of igmfuga substance can be maintained and the quality of the product can be guaranteed. Preferably, a stirring device 6 is further provided within the reflux tank 5, so that various components of the fire substance within the reflux tank 5 can be sufficiently agitated so that they are uniformly distributed to further guarantee the stabilization of the printed amount of igmfuga substance. Therefore, the present invention can effectively resolve the
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problema tecnico de que la cantidad impresa de sustancia igmfuga se disminuye gradualmente en la circulacion de produccion.technical problem that the printed amount of fire substance gradually decreases in the production circulation.
Por otro lado, la presente invencion proporciona ademas un metodo para producir un papel de fumar que tiene bandas igmfugas, que comprende una etapa de imprimir la sustancia igmfuga en un papel base del papel de fumar. El metodo comprende ademas las siguientes etapas: una etapa de secado en la que el papel de fumar se transporta a al menos una zona de secado de primera fase despues de que se imprima la sustancia igmfuga en el mismo, y en la zona de secado de primera fase, el papel de fumar se seca mediante un cilindro de secado que esta en contacto estrecho con la hoja del papel de fumar. Preferiblemente, en la etapa de secado, se proporciona ademas una zona de secado de segunda fase de aire de calentamiento infrarrojo de modo que la hoja del papel de fumar entra en la segunda zona de secado tras pasar por la zona de secado de primera fase de cilindro de secado. El metodo segun la presente invencion comprende ademas una etapa de prensado en la que el papel de fumar impreso con las bandas igmfugas entra en la zona de prensado tras secarse, y se presiona mediante el rodillo de prensado para reducir el espesor del recubrimiento de las bandas igmfugas. Mas preferiblemente, en la etapa de prensado se incluye ademas una etapa de calentar el rodillo de prensado inferior 15 a traves de la fuente de calor de fluido.On the other hand, the present invention also provides a method for producing a smoking paper having fireproof bands, which comprises a step of printing the fireproof substance on a base paper of the smoking paper. The method further comprises the following stages: a drying stage in which the smoking paper is transported to at least one first-stage drying zone after the fireproof substance is printed therein, and in the drying zone of First phase, the smoking paper is dried by a drying cylinder that is in close contact with the sheet of the smoking paper. Preferably, in the drying stage, a second phase drying zone of infrared heating air is also provided so that the sheet of the smoking paper enters the second drying zone after passing through the first phase drying zone of drying cylinder The method according to the present invention further comprises a pressing step in which the printed smoking paper with the fireproof bands enters the pressing zone after drying, and is pressed by the pressing roller to reduce the thickness of the coating of the bands Fireproof More preferably, a step of heating the lower pressing roller 15 through the fluid heat source is also included in the pressing stage.
Preferiblemente, el metodo segun la presente invencion comprende ademas una etapa de suministrar la sustancia igmfuga. Mediante la disposicion de un tanque de reflujo de sustancia igmfuga y el establecimiento de una circulacion de reflujo entre la cuba de alimentacion de sustancia igmfuga y el tanque de reflujo de sustancia igmfuga, se suministra disolvente volatil a la sustancia igmfuga en el tanque de reflujo para estabilizar la concentracion y viscosidad de la sustancia igmfuga. En la etapa de suministrar la sustancia igmfuga, se emplea una circulacion de reflujo de la sustancia igmfuga para superar de manera eficaz la desventaja presente en el proceso actual de que la cantidad impresa de sustancia igmfuga se disminuye gradualmente. Espedficamente, disponiendo un tanque de reflujo de sustancia igmfuga 5, se establecer una circulacion de reflujo entre la cuba de alimentacion de sustancia igmfuga 4 y el tanque de reflujo de sustancia igmfuga 5. Ademas, el tanque de reflujo 5 esta dotado de un dispositivo de agitacion 6 para agitar suficientemente varios componentes de la sustancia igmfuga dentro del tanque de reflujo 5 para que esten uniformemente distribuidos, para garantizar adicionalmente la estabilizacion de la cantidad impresa de la sustancia igmfuga. Por tanto, la presente invencion puede resolver de manera eficaz el problema tecnico de que la cantidad impresa de la sustancia igmfuga se disminuye gradualmente en la circulacion de produccion.Preferably, the method according to the present invention further comprises a step of delivering the flame retardant substance. By disposing a reflux tank of igmfuga substance and establishing a reflux circulation between the igmfuga substance feed tank and the igmfuga substance reflux tank, volatile solvent is supplied to the igmfuga substance in the reflux tank for stabilize the concentration and viscosity of the igmfuga substance. In the step of supplying the igmfuga substance, a reflux circulation of the igmfuga substance is used to effectively overcome the disadvantage present in the current process that the printed amount of igmfuga substance is gradually decreased. Specifically, by providing a reflux tank of igmfuga substance 5, a reflux circulation will be established between the igmfuga substance feeding tank 4 and the reflux tank of igmfuga substance 5. In addition, the reflux tank 5 is provided with a device for stirring 6 to sufficiently stir several components of the igmfuga substance into the reflux tank 5 so that they are uniformly distributed, to further guarantee the stabilization of the printed amount of the igmfuga substance. Therefore, the present invention can effectively solve the technical problem that the printed amount of the fire substance gradually decreases in the production circulation.
Ademas, la presente invencion emplea la combinacion del proceso de secado de primera fase de cilindro de secado y el segundo proceso de secado de aire de calentamiento infrarrojo. El papel base de papel de fumar se imprime en primer lugar con la sustancia igmfuga mediante una placa de impresion, y entonces entra en la zona de secado de primera fase, es decir, la primera zona de secado de cilindro de secado en la que el cilindro de secado puede calentarse por vapor de agua o electricidad. Como la hoja de papel se adhiere estrechamente al cilindro de secado que va a calentarse, se reduce la generacion de deformacion y arrugado de la hoja de papel mediante la fuerza de rozamiento entre el cilindro de secado y las hojas de papel, y a continuacion, las hojas de papel entran en la zona de secado de segunda fase de aire de calentamiento infrarrojo.In addition, the present invention employs the combination of the drying process of the first phase of the drying cylinder and the second drying process of infrared heating air. The cigarette paper base paper is first printed with the igmfuga substance by means of a printing plate, and then enters the first phase drying zone, that is, the first drying zone of the drying cylinder in which the Drying cylinder can be heated by steam or electricity. As the paper sheet adheres closely to the drying cylinder to be heated, the generation of deformation and wrinkling of the paper sheet is reduced by the frictional force between the drying cylinder and the paper sheets, and then the Paper sheets enter the drying zone of second phase infrared heating air.
Ademas, el metodo segun la presente invencion puede resolver el problema tecnico de que el espesor de la banda igmfuga es demasiado grande usando la etapa de prensado del rodillo de prensado. Espedficamente, el papel de fumar que tiene las bandas igmfugas entra en la zona de prensado tras secarse; y preferiblemente, el rodillo de prensado se compone de un rodillo de caucho y un rodillo de acero que esta comunicado con agua caliente para el calentamiento en su interior. Con respecto al papel de fumar que tiene bandas igmfugas, el recubrimiento de la banda igmfuga puede ablandarse mediante el efecto de calentamiento del rodillo de acero, y el espesor del recubrimiento de la sustancia igmfuga puede reducirse de manera eficaz aplicando una cierta presion.In addition, the method according to the present invention can solve the technical problem that the thickness of the fireproof web is too large using the pressing stage of the pressing roller. Specifically, the smoking paper of the fireproof bands enters the pressing zone after drying; and preferably, the pressing roller is composed of a rubber roller and a steel roller that is communicated with hot water for heating inside. With respect to the smoking paper having fireproof bands, the coating of the fireproof band can be softened by the heating effect of the steel roller, and the thickness of the coating of the fireproof substance can be effectively reduced by applying a certain pressure.
Obviamente, los expertos en la tecnica podnan disenar varios tipos de dispositivos de impresion y pueden formarse correspondientes procedimientos de produccion usando la maquina de impresion de huecograbado y el metodo para producir los papeles de fumar que tienen bandas igmfugas de la presente invencion.Obviously, those skilled in the art can design various types of printing devices and corresponding production procedures can be formed using the gravure printing machine and the method of producing smoking papers having fireproof bands of the present invention.
Debe observarse que las realizaciones anteriores solo sirven para describir pero no para considerarse como limitativos de la solucion tecnica de la presente invencion. La presente invencion se describe en detalle con referencia a las realizaciones preferidas. Sin embargo, debe entenderse por los expertos en la tecnica que varias modificaciones a los modos espedficos de llevar a cabo la presente invencion o alternativas equivalentes pueden realizarse a una parte de las caractensticas tecnicas sin apartarse de la solucion tecnica de la presente invencion. Las modificaciones y alternativas estan por tanto abarcadas por la solucion tecnica tal como se reivindica en la presente invencion.It should be noted that the above embodiments only serve to describe but not to be considered as limiting the technical solution of the present invention. The present invention is described in detail with reference to the preferred embodiments. However, it should be understood by those skilled in the art that various modifications to the specific ways of carrying out the present invention or equivalent alternatives can be made to a part of the technical features without departing from the technical solution of the present invention. Modifications and alternatives are therefore encompassed by the technical solution as claimed in the present invention.
Claims (7)
Applications Claiming Priority (3)
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| CN201110393685 | 2011-12-02 | ||
| CN2011103936857A CN102501570B (en) | 2011-12-02 | 2011-12-02 | Gravure press producing cigarette paper with flame retarding zone and production method |
| PCT/CN2012/074412 WO2012113355A2 (en) | 2011-12-02 | 2012-04-20 | Gravure press for manufacturing fire-retardant banded cigarette paper and manufacturing method for same |
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| ES2610558T3 true ES2610558T3 (en) | 2017-04-28 |
| ES2610558T5 ES2610558T5 (en) | 2020-02-27 |
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| ES12749859T Active ES2610558T5 (en) | 2011-12-02 | 2012-04-20 | Gravure press to make cigarette paper with fire retardant bands and manufacturing method for it |
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| EP (1) | EP2725138B2 (en) |
| JP (1) | JP2014519994A (en) |
| KR (1) | KR101552492B1 (en) |
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| CN101550663A (en) * | 2009-05-01 | 2009-10-07 | 海宁市宝丽士印刷包装有限公司 | Flame retardation cigarette paper and preparation method thereof |
| RU2476128C1 (en) * | 2009-07-07 | 2013-02-27 | Джапан Тобакко Инк. | Method and device for cigarette folding paper manufacture |
| PL2540910T3 (en) | 2010-02-26 | 2016-04-29 | Japan Tobacco Inc | Production method and production device for coated paper |
| CN201872406U (en) * | 2010-08-19 | 2011-06-22 | 宜昌宏裕塑业有限责任公司 | Inkjet ink-supply device for unit type photogravure press |
| WO2012056568A1 (en) | 2010-10-29 | 2012-05-03 | 日本たばこ産業株式会社 | Inspection system for coated paper |
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-
2011
- 2011-12-02 CN CN2011103936857A patent/CN102501570B/en active Active
-
2012
- 2012-04-20 EP EP12749859.0A patent/EP2725138B2/en active Active
- 2012-04-20 RU RU2013152172/12A patent/RU2569774C1/en active
- 2012-04-20 WO PCT/CN2012/074412 patent/WO2012113355A2/en active Application Filing
- 2012-04-20 ES ES12749859T patent/ES2610558T5/en active Active
- 2012-04-20 JP JP2014510648A patent/JP2014519994A/en active Pending
- 2012-04-20 KR KR1020137029717A patent/KR101552492B1/en active IP Right Grant
- 2012-04-20 PL PL12749859T patent/PL2725138T5/en unknown
- 2012-11-30 TW TW101145084A patent/TW201322931A/en unknown
- 2012-12-07 HK HK12112681.5A patent/HK1171720A1/en unknown
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2013
- 2013-11-13 ZA ZA2013/08545A patent/ZA201308545B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140039189A (en) | 2014-04-01 |
| RU2569774C1 (en) | 2015-11-27 |
| HK1171720A1 (en) | 2013-04-05 |
| CN102501570B (en) | 2013-10-30 |
| JP2014519994A (en) | 2014-08-21 |
| WO2012113355A4 (en) | 2013-05-30 |
| EP2725138A2 (en) | 2014-04-30 |
| WO2012113355A2 (en) | 2012-08-30 |
| KR101552492B1 (en) | 2015-09-11 |
| ES2610558T5 (en) | 2020-02-27 |
| WO2012113355A3 (en) | 2012-10-18 |
| EP2725138B2 (en) | 2019-07-17 |
| EP2725138B1 (en) | 2016-10-12 |
| PL2725138T5 (en) | 2019-11-29 |
| ZA201308545B (en) | 2014-08-27 |
| PL2725138T3 (en) | 2017-07-31 |
| EP2725138A4 (en) | 2015-09-09 |
| TW201322931A (en) | 2013-06-16 |
| CN102501570A (en) | 2012-06-20 |
| TWI505784B (en) | 2015-11-01 |
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