EP2706143B1 - Manufacturing device and preparation method for cigarette paper having flame-retarding stripes - Google Patents

Manufacturing device and preparation method for cigarette paper having flame-retarding stripes Download PDF

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Publication number
EP2706143B1
EP2706143B1 EP12749773.3A EP12749773A EP2706143B1 EP 2706143 B1 EP2706143 B1 EP 2706143B1 EP 12749773 A EP12749773 A EP 12749773A EP 2706143 B1 EP2706143 B1 EP 2706143B1
Authority
EP
European Patent Office
Prior art keywords
cigarette paper
coating
fire retardant
manufacturing
resistant
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.)
Revoked
Application number
EP12749773.3A
Other languages
German (de)
French (fr)
Other versions
EP2706143A2 (en
EP2706143A4 (en
Inventor
Qicheng WANG
Yuxiang Chen
Bing Liang
Jinsong Li
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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Filing date
Publication date
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Application filed by Mudanjiang Hengfeng Paper Co Ltd filed Critical Mudanjiang Hengfeng Paper Co Ltd
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Publication of EP2706143A4 publication Critical patent/EP2706143A4/en
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Classifications

    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/34—Ignifugeants
    • 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
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface 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
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes

Definitions

  • the present invention generally relates to an apparatus and a method for manufacturing paper sheet, and in particular, to an apparatus and a method for manufacturing cigarette paper with fire retardant strip.
  • a cigarette butt may cause a fire destroying thousands of hectares of forest, and there are a lot of fire disasters caused by smoking.
  • the temperature at the center area of the cigarette butt is up to 700°C-800°C, the temperature at the combustion cone surface is also up to 300°C-500°C, and these temperatures are much higher than ignition point of general solid combustibles, e.g.. paper and cloth.
  • Cigarette made from cigarette paper with fire retardant strip can improve security of the cigarette (i.e. low ignition).
  • An object of the present invention is to provide an apparatus and a method for manufacturing a cigarette paper with a fire retardant strip, which may effectively reduce or even avoid occurrence of corrugations on the printed fire retardant strip, without changing these requirements on production of technical standards of raw sheet of the cigarette paper.
  • the present invention provides a manufacturing apparatus for manufacturing a cigarette paper with fire retardant strips.
  • the apparatus comprises a first and a second coating roller arranged in contact with and parallel to each other and having an opposite axially rotational direction with each other; wherein a contact position between the first and second coating rollers is provided through which the cigarette paper passes; and, wherein a feeding tube with a plurality of feeding nozzles is provided outside the first and/or the second coating roller.
  • Feeding tubes are provided outside both said first and second coating rollers which are arranged in a horizontal or an inclined manner such that a feed liquid storage tankcoating liquid tank is formed at the contact position between said first and second coating rollers.
  • the feeding tube and, a coating metering bar arranged in contact with and parallel to the second coating roller, are provided outside the second coating roller.
  • the first and second coating rollers have rims at both axial ends thereof, the rims being parallel to each other and at which a barrier sheet is provided.
  • Another object of the present invention is to provide a method for manufacturing a cigarette paper with a fire retardant strip by using a manufacturing apparatus according to any one of the embodiments as described above, wherein the method comprises, applying a coating layer of diffusion-resistant and osmosis-resistant material, 0.5-2.5% by weight of a raw sheet of a cigarette paper, on a front and/or a back surface of the raw sheet of the cigarette paper.
  • the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on either the front or the back surface of the raw sheet of the cigarette paper.
  • the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on both the front and the back surface of the raw sheet of the cigarette paper.
  • the coating layer of diffusion-resistant and osmosis-resistant material comprises oxidized starch or carboxy methyl cellulose sodium, which is in 0.3-8% of mass concentration.
  • the method further comprises a step of printing a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip by a printing process.
  • one or more technical solution(s) according to these embodiments of the present invention at least has following technical benefits and advantages.
  • the present invention provides applying the coating layer of diffusion-resistant and osmosis-resistant material, e.g., oxidized starch or carboxy methyl cellulose sodium, on the surface of the raw sheet of the cigarette paper, thereby achieving certain diffusion-resistant diffusion resistance, permeability resistance and, reduction of corrugation during the printing of the fire retardant on the strip.
  • the coating layer of diffusion-resistant and osmosis-resistant material on the surface of the raw sheet of the cigarette paper can also increase tensile strength of the cigarette paper and improve surface performance of the cigarette paper.
  • a fire retardant strip 2 is printed, by a fire retardant printing apparatus, on a cigarette paper 1, as shown in Fig. 1 .
  • the width of the fire retardant strip 2 is 2-8 mm.
  • at least two fire retardant strips 2 are provided on the cigarette paper 1, and, the distance between the two adjacent fire retardant strips 2 is 10-30 mm.
  • the fire retardant strip 2 has a bar shape, the width of the fire retardant strip 2 is 6 mm, and, the distance between the two adjacent fire retardant strips 2 is 19 mm.
  • the manufacturing apparatus comprises a first coating roller 3 and a second coating roller 4 arranged in contact with and parallel to each other and having an opposite axially rotational direction (for example, a direction shown by the arrow in Fig. 2 ) with each other.
  • a cigarette paper 5 passes through a contact position between the first coating roller 3 and the second coating roller 4.
  • a feeding tube 7 is provided outside the first coating roller 3 or the second coating roller 4, and in this embodiment, the feeding tube 7 is preferably provided outside the second coating roller 4, as shown in Fig. 2 .
  • the feeding tube 7 is provided with a plurality of feeding nozzles 8, and in this embodiment, the feeding tube 7 is preferably provided with a plurality of feeding nozzles 8 towards the second coating roller 4.
  • a coating metering bar 6 which is arranged in contact with and parallel to the second coating roller 4 is also provided outside the second coating roller 4.
  • the prepared feed liquid for coating is sprayed onto the second coating roller 4 through the feeding nozzles 8 of the feeding tube 7, and then, the redundant feed liquid on the second coating roller 4 is removed by metering a pressure adjustment between the coating metering bar 6 and the second coating roller 4. Consequently, a layer of uniform feed liquid thin film is formed from the feed liquid for coating on the second coating roller 4, and then, the layer of feed liquid is transferred to the surface of the cigarette paper 5 by means of rotation between the second coating roller 4 and the first coating roller 3.
  • oxidized starch is used as the feed liquid for coating and is in 3% of mass concentration. Further, oxidized starch accounts into 0.8% in weight for the raw sheet of the cigarette paper. Thus, an improved diffusion diffusion-resistantand permeability resistance is achieved.
  • the above-mentioned concentration and percentage may be finely adjusted in accordance with factors such as certain degrees of corrugation of the paper sheet, requirements on the air permeability of the fire retardant strip and drying capacities, in these conditions liking temperature, humidity, etc., in different regions and locals and different environments.
  • FIG. 3 another preferable embodiment of a cigarette paper with a fire retardant strip according to the present invention is shown, where a schematic structure of a double-sided dip-coating for a paper sheet is illustrated.
  • the first coating roller 3 and the second coating roller 4 are arranged in a horizontal or an inclined manner such that a feed liquid storage tank is formed at the contact position between the first coating roller 3 and the second coating roller 4.
  • Fig. 3 shows that it is generally in a horizontal manner.
  • Feeding tubes 7 are provided outside both the first coating roller 3 and the second coating roller 4, as shown in Fig. 3 .
  • the first coating roller 3 and the second coating roller 4 have rims at both axial ends thereof, the rims are parallel to each other and at which a barrier sheet 9 is provided. Accordingly, a feed liquid for coating of a certain liquid level is formed within the contact region between the first coating roller 3 and the second coating roller 4, such that the cigarette paper can be dipped into it, so as to achieve the coating of the feed liquid.
  • the feed liquid for coating flows to the first coating roller 3 and the second coating roller 4, respectively, and, by means of the sealing effect of the barrier sheet 9, a feed liquid for coating in a certain liquid level is formed between the first coating roller 3 and the second coating roller 4, such that paper sheet for the cigarette paper 5 can pass through between the first coating roller 3 and the second coating roller 4 so as to complete the dip-coating process of the feed liquid on the paper sheet.
  • the amount of the feed liquid can be equal to that of the feed liquid absorbed by the paper sheet, so as to ensure stable liquid level of the feed liquid for coating.
  • Another object of the present invention is to provide a method for manufacturing a cigarette paper with a fire retardant strip.
  • the method comprises, applying a coating layer of diffusion-resistant and osmosis-resistant material, which is in 0.5-3.5% by weight of a raw sheet of a cigarette paper, on a front and/or a back surface of the raw sheet of the cigarette paper.
  • the coating layer of diffusion-resistant and osmosis-resistant material is in 0.5-2.5% by weight of the raw sheet of the cigarette paper.
  • the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on either the front or the back surface of the raw sheet of the cigarette paper, as in the process of the arrangement shown in Fig. 2 .
  • the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on both the front and the back surfaces of the raw sheet of the cigarette paper, as in the process of the arrangement shown in Fig. 3 .
  • the coating layer of diffusion-resistant and osmosis-resistant material comprises oxidized starch or carboxy methyl cellulose sodium, which is in 0.3-8% of mass concentration.
  • oxidized starch or carboxy methyl cellulose sodium is in 1-5% of mass concentration.
  • the method further comprises a step of printing a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip by a printing process, such that the coating layer of diffusion-resistant and osmosis-resistant material, e.g., oxidized starch or carboxy methyl cellulose sodium, is coated on the surface of the raw sheet of the cigarette paper, thereby achieving certain diffusion-resistant diffusion resistance and permeability resistance as well as reduction of corrugation during the printing of the fire retardant on the strip.
  • the coating layer of diffusion-resistant and osmosis-resistant material on the surface of the raw sheet of the cigarette paper can also increase tensile strength of the cigarette paper and improve surface performance of the cigarette paper.

Landscapes

  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Description

    BACKGROUND OF THE INVENTION Field of the Invention
  • The present invention generally relates to an apparatus and a method for manufacturing paper sheet, and in particular, to an apparatus and a method for manufacturing cigarette paper with fire retardant strip.
    • Description of the Related Arts
  • A cigarette butt may cause a fire destroying thousands of hectares of forest, and there are a lot of fire disasters caused by smoking. The temperature at the center area of the cigarette butt is up to 700°C-800°C, the temperature at the combustion cone surface is also up to 300°C-500°C, and these temperatures are much higher than ignition point of general solid combustibles, e.g.. paper and cloth. Cigarette made from cigarette paper with fire retardant strip can improve security of the cigarette (i.e. low ignition).
  • In a conventional method for manufacturing cigarette paper with fire retardant strip, several spaced bar-shaped fire retardant strips are printed on the raw sheet of the cigarette paper. Once the cigarette burns to such fire retardant region, ignition naturally goes out as the fire retardant absorbs heat and less oxygen enters into the cigarette. When the cigarette burns to the area of the fire retardant strip, if the cigarette is smoked, the oxygen will enter into the cigarette due to the smoking, and the cigarette would continue to burn.
  • No sizing is applied since the raw sheet of cigarette paper for manufacturing cigarette paper with fire retardant strip belongs to these on which non-printing is made. When a coating layer of fire retardant strip is printed on the raw sheet of cigarette paper by a relief printing, the bar-shaped coating layer region tends to have transverse contraction while no corresponding transverse contraction occurs on these non-printing regions, thereby resulting in corrugation of the paper sheet.
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide an apparatus and a method for manufacturing a cigarette paper with a fire retardant strip, which may effectively reduce or even avoid occurrence of corrugations on the printed fire retardant strip, without changing these requirements on production of technical standards of raw sheet of the cigarette paper.
  • In order to achieve the above-mentioned object, the present invention provides a manufacturing apparatus for manufacturing a cigarette paper with fire retardant strips. The apparatus comprises a first and a second coating roller arranged in contact with and parallel to each other and having an opposite axially rotational direction with each other; wherein a contact position between the first and second coating rollers is provided through which the cigarette paper passes; and, wherein a feeding tube with a plurality of feeding nozzles is provided outside the first and/or the second coating roller. Feeding tubes are provided outside both said first and second coating rollers which are arranged in a horizontal or an inclined manner such that a feed liquid storage tankcoating liquid tank is formed at the contact position between said first and second coating rollers.
  • Preferably, the feeding tube and, a coating metering bar arranged in contact with and parallel to the second coating roller, are provided outside the second coating roller.
  • More preferably, the first and second coating rollers have rims at both axial ends thereof, the rims being parallel to each other and at which a barrier sheet is provided.
  • Another object of the present invention is to provide a method for manufacturing a cigarette paper with a fire retardant strip by using a manufacturing apparatus according to any one of the embodiments as described above, wherein the method comprises, applying a coating layer of diffusion-resistant and osmosis-resistant material, 0.5-2.5% by weight of a raw sheet of a cigarette paper, on a front and/or a back surface of the raw sheet of the cigarette paper.
  • Preferably, the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on either the front or the back surface of the raw sheet of the cigarette paper.
  • More preferably, the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on both the front and the back surface of the raw sheet of the cigarette paper.
  • Furthermore, the coating layer of diffusion-resistant and osmosis-resistant material comprises oxidized starch or carboxy methyl cellulose sodium, which is in 0.3-8% of mass concentration.
  • Preferably, the method further comprises a step of printing a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip by a printing process.
  • Compared with the prior arts, one or more technical solution(s) according to these embodiments of the present invention at least has following technical benefits and advantages.
  • In order to print a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip, the present invention provides applying the coating layer of diffusion-resistant and osmosis-resistant material, e.g., oxidized starch or carboxy methyl cellulose sodium, on the surface of the raw sheet of the cigarette paper, thereby achieving certain diffusion-resistant diffusion resistance, permeability resistance and, reduction of corrugation during the printing of the fire retardant on the strip. Meanwhile, in the present invention, the coating layer of diffusion-resistant and osmosis-resistant material on the surface of the raw sheet of the cigarette paper can also increase tensile strength of the cigarette paper and improve surface performance of the cigarette paper.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings described here will be made to provide a further understanding for the present invention and constitute a part of the present application; the following exemplary embodiments and the description thereof are used to explain the present invention and is not improper limitation thereto, wherein:
    • Fig. 1 is a schematic view of a cigarette produced by a cigarette paper with a fire retardant strip according to the present invention;
    • Fig. 2 is a structurally schematic view of a cigarette paper with a fire retardant strip according to an embodiment of the present invention; and
    • Fig. 3 is a structurally schematic view of a cigarette paper with a fire retardant strip according to another embodiment of the present invention.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE IVENTION
  • Hereafter, the technical solution of the present invention is further described in detail through the accompanying drawings and following embodiments.
    • Embodiment 1:
  • Referring to figure 1 and figure 2, a preferable embodiment of a cigarette paper with a fire retardant strip according to the present invention is shown. A fire retardant strip 2 is printed, by a fire retardant printing apparatus, on a cigarette paper 1, as shown in Fig. 1. In an example, the width of the fire retardant strip 2 is 2-8 mm. In a preferable embodiment, at least two fire retardant strips 2 are provided on the cigarette paper 1, and, the distance between the two adjacent fire retardant strips 2 is 10-30 mm. Preferably, in this embodiment, the fire retardant strip 2 has a bar shape, the width of the fire retardant strip 2 is 6 mm, and, the distance between the two adjacent fire retardant strips 2 is 19 mm.
  • As shown in Fig. 2, a schematic structure of a single-sided surface-coating on a back surface of a paper sheet is illustrated. The manufacturing apparatus according to the present invention comprises a first coating roller 3 and a second coating roller 4 arranged in contact with and parallel to each other and having an opposite axially rotational direction (for example, a direction shown by the arrow in Fig. 2) with each other. A cigarette paper 5 passes through a contact position between the first coating roller 3 and the second coating roller 4. A feeding tube 7 is provided outside the first coating roller 3 or the second coating roller 4, and in this embodiment, the feeding tube 7 is preferably provided outside the second coating roller 4, as shown in Fig. 2. The feeding tube 7 is provided with a plurality of feeding nozzles 8, and in this embodiment, the feeding tube 7 is preferably provided with a plurality of feeding nozzles 8 towards the second coating roller 4.
  • Further, in this embodiment, a coating metering bar 6 which is arranged in contact with and parallel to the second coating roller 4 is also provided outside the second coating roller 4.
  • During operation, the prepared feed liquid for coating is sprayed onto the second coating roller 4 through the feeding nozzles 8 of the feeding tube 7, and then, the redundant feed liquid on the second coating roller 4 is removed by metering a pressure adjustment between the coating metering bar 6 and the second coating roller 4. Consequently, a layer of uniform feed liquid thin film is formed from the feed liquid for coating on the second coating roller 4, and then, the layer of feed liquid is transferred to the surface of the cigarette paper 5 by means of rotation between the second coating roller 4 and the first coating roller 3.
  • In this embodiment, oxidized starch is used as the feed liquid for coating and is in 3% of mass concentration. Further, oxidized starch accounts into 0.8% in weight for the raw sheet of the cigarette paper. Thus, an improved diffusion diffusion-resistantand permeability resistance is achieved.
  • Those skilled in the art will understand that, in those practical applications, in order to achieve an optimal state of production, the above-mentioned concentration and percentage may be finely adjusted in accordance with factors such as certain degrees of corrugation of the paper sheet, requirements on the air permeability of the fire retardant strip and drying capacities, in these conditions liking temperature, humidity, etc., in different regions and locals and different environments.
    • Embodiment 2:
  • Referring to figure 3, another preferable embodiment of a cigarette paper with a fire retardant strip according to the present invention is shown, where a schematic structure of a double-sided dip-coating for a paper sheet is illustrated. In this embodiment, the first coating roller 3 and the second coating roller 4 are arranged in a horizontal or an inclined manner such that a feed liquid storage tank is formed at the contact position between the first coating roller 3 and the second coating roller 4. Fig. 3 shows that it is generally in a horizontal manner. Feeding tubes 7 are provided outside both the first coating roller 3 and the second coating roller 4, as shown in Fig. 3. The first coating roller 3 and the second coating roller 4 have rims at both axial ends thereof, the rims are parallel to each other and at which a barrier sheet 9 is provided. Accordingly, a feed liquid for coating of a certain liquid level is formed within the contact region between the first coating roller 3 and the second coating roller 4, such that the cigarette paper can be dipped into it, so as to achieve the coating of the feed liquid.
  • During operation, the feed liquid for coating flows to the first coating roller 3 and the second coating roller 4, respectively, and, by means of the sealing effect of the barrier sheet 9, a feed liquid for coating in a certain liquid level is formed between the first coating roller 3 and the second coating roller 4, such that paper sheet for the cigarette paper 5 can pass through between the first coating roller 3 and the second coating roller 4 so as to complete the dip-coating process of the feed liquid on the paper sheet. Furthermore, those skilled in the art will understand that, by adjustment to the flow of the two feeding tubes 7, the amount of the feed liquid can be equal to that of the feed liquid absorbed by the paper sheet, so as to ensure stable liquid level of the feed liquid for coating.
  • Another object of the present invention is to provide a method for manufacturing a cigarette paper with a fire retardant strip. The method comprises, applying a coating layer of diffusion-resistant and osmosis-resistant material, which is in 0.5-3.5% by weight of a raw sheet of a cigarette paper, on a front and/or a back surface of the raw sheet of the cigarette paper. Preferably, the coating layer of diffusion-resistant and osmosis-resistant material is in 0.5-2.5% by weight of the raw sheet of the cigarette paper. Thus, diffusion-resistant improved diffusion resistance and permeability resistance are achieved.
  • In one embodiment of the present invention, the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on either the front or the back surface of the raw sheet of the cigarette paper, as in the process of the arrangement shown in Fig. 2.
  • In another embodiment of the present invention, the method comprises applying the coating layer of diffusion-resistant and osmosis-resistant material on both the front and the back surfaces of the raw sheet of the cigarette paper, as in the process of the arrangement shown in Fig. 3.
  • The coating layer of diffusion-resistant and osmosis-resistant material comprises oxidized starch or carboxy methyl cellulose sodium, which is in 0.3-8% of mass concentration. Preferably, oxidized starch or carboxy methyl cellulose sodium is in 1-5% of mass concentration. Thus, diffusion-resistant improved diffusion resistance and permeability resistance are achieved.
  • After the above-mentioned processes of the cigarette paper with the fire retardant strip, the method further comprises a step of printing a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip by a printing process, such that the coating layer of diffusion-resistant and osmosis-resistant material, e.g., oxidized starch or carboxy methyl cellulose sodium, is coated on the surface of the raw sheet of the cigarette paper, thereby achieving certain diffusion-resistant diffusion resistance and permeability resistance as well as reduction of corrugation during the printing of the fire retardant on the strip. Meanwhile, in the present invention, the coating layer of diffusion-resistant and osmosis-resistant material on the surface of the raw sheet of the cigarette paper can also increase tensile strength of the cigarette paper and improve surface performance of the cigarette paper.
  • It is obvious for those skilled in the art that various types of paper sheet manufacturing apparatuses and methods can be completed by using the manufacturing apparatus for the cigarette paper with the fire retardant strip and the method for manufacturing the same according to the present invention.
  • It should be noted that above embodiments only are used to explain the technical solutions of the present invention and should not be construed to be limiting on the invention. Although the present invention is described in detail with reference to the preferable embodiment, those skills in the art may understand that the embodiments of the present invention can be modified or the partial technical features are replaceable with equivalents without departing from the spirits of the technical solution of the present invention, which should be within the scope of the present invention.

Claims (8)

  1. A manufacturing apparatus for manufacturing a cigarette paper with a fire retardant strip, characterized in that, said manufacturing apparatus comprises a first (3) and a second (4) coating roller arranged in contact with and parallel to each other and having an opposite axially rotational direction with each other; wherein a contact position between said first (3) and second (4) coating rollers is provided through which said cigarette paper passes; and, wherein a feeding tube (7) with a plurality of feeding nozzles (8) is provided outside said first (3) and/or said second (4) coating roller; wherein feeding tubes (7) are provided outside both said first (3) and second (4) coating rollers which are arranged in a horizontal or an inclined manner such that a coating liquid tank is formed at the contact position between said first (3) and second (4) coating rollers.
  2. The manufacturing apparatus according to claim 1, characterized in that, the feeding tube (7) and, a coating metering bar (6) arranged in contact with and parallel to said second coating roller (4), are provided outside said second coating roller (4).
  3. The manufacturing apparatus according to claim 2, characterized in that, said first (3) and second (4) coating rollers have rims at both axial ends thereof, the rims being parallel to each other and at which a barrier sheet (9) is provided.
  4. A method for manufacturing a cigarette paper with a fire retardant strip by using a manufacturing apparatus according to any one of claims 1-3, characterized in that, the method comprises, applying a coating layer of diffusion-resistant and osmosis-resistant material, which is in 0.5-2.5% in weight for a raw sheet of a cigarette paper, on a front and/or a back surface of the raw sheet of the cigarette paper.
  5. The method for manufacturing the cigarette paper with the fire retardant strip according to claim 4, characterized in that, applying the coating layer of diffusion-resistant and osmosis-resistant material on either the front or the back surface of the raw sheet of the cigarette paper.
  6. The method for manufacturing the cigarette paper with the fire retardant strip according to claim 4, characterized in that, applying the coating layer of diffusion-resistant and osmosis-resistant material on both the front and the back surface of the raw sheet of the cigarette paper.
  7. The method for manufacturing the cigarette paper with the fire retardant strip according to claim 5 or 6, characterized in that, the coating layer of diffusion-resistant and osmosis-resistant material comprises oxidized starch or carboxy methyl cellulose sodium, which is in 0.3-8% of mass concentration.
  8. The method for manufacturing the cigarette paper with the fire retardant strip according to claim 7, characterized in that, the method further comprises a step of printing a fire retardant on one surface or both surfaces of the cigarette paper with the fire retardant strip by a printing process.
EP12749773.3A 2011-12-02 2012-04-20 Manufacturing device and preparation method for cigarette paper having flame-retarding stripes Revoked EP2706143B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011103936630A CN102493280A (en) 2011-12-02 2011-12-02 Device and method for manufacturing cigarette paper with flame-retardant belt
PCT/CN2012/074417 WO2012113356A2 (en) 2011-12-02 2012-04-20 Manufacturing device and preparation method for cigarette paper having flame-retarding stripes

Publications (3)

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EP2706143A2 EP2706143A2 (en) 2014-03-12
EP2706143A4 EP2706143A4 (en) 2014-10-29
EP2706143B1 true EP2706143B1 (en) 2016-09-28

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EP12749773.3A Revoked EP2706143B1 (en) 2011-12-02 2012-04-20 Manufacturing device and preparation method for cigarette paper having flame-retarding stripes

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EP (1) EP2706143B1 (en)
CN (1) CN102493280A (en)
AU (1) AU2012220111B2 (en)
ES (1) ES2606725T3 (en)
TW (1) TW201328613A (en)
WO (1) WO2012113356A2 (en)

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CN102493280A (en) 2011-12-02 2012-06-13 牡丹江恒丰纸业股份有限公司 Device and method for manufacturing cigarette paper with flame-retardant belt
CN104875482B (en) * 2015-05-12 2017-07-28 江苏中烟工业有限责任公司 The preparation facilities and preparation method of a kind of LIP cigarette
CN109154139B (en) * 2016-04-22 2021-03-19 易耐纸股份责任有限公司 Process for producing sheet-like thermal and/or acoustic insulation material
CN109604103A (en) * 2018-10-24 2019-04-12 安徽达胜电子有限公司 A kind of improved automatic coating machine and automatic coating method
CN109594411B (en) * 2018-12-27 2021-12-14 牡丹江恒丰纸业股份有限公司 Anti-permeation low-temperature heating non-combustion cigarette paper combustion inhibitor, cigarette paper and preparation method
CN114013159B (en) * 2021-11-17 2024-05-17 青岛嘉泽包装有限公司 Cigarette tipping paper production method capable of improving moisture deformation resistance

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CN102493280A (en) 2012-06-13
WO2012113356A3 (en) 2012-11-08
AU2012220111A1 (en) 2014-03-27
TW201328613A (en) 2013-07-16
EP2706143A2 (en) 2014-03-12
EP2706143A4 (en) 2014-10-29
AU2012220111B2 (en) 2016-04-21
WO2012113356A4 (en) 2013-05-10
TWI505785B (en) 2015-11-01
ES2606725T3 (en) 2017-03-27

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