EP3654784A1 - Papier d'enveloppe pour un article à fumer - Google Patents

Papier d'enveloppe pour un article à fumer

Info

Publication number
EP3654784A1
EP3654784A1 EP18755454.8A EP18755454A EP3654784A1 EP 3654784 A1 EP3654784 A1 EP 3654784A1 EP 18755454 A EP18755454 A EP 18755454A EP 3654784 A1 EP3654784 A1 EP 3654784A1
Authority
EP
European Patent Office
Prior art keywords
wrapping paper
burn
base paper
previous
paper
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.)
Withdrawn
Application number
EP18755454.8A
Other languages
German (de)
English (en)
Inventor
Hiroyoshi Ono
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.)
JT International SA
Original Assignee
JT International SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JT International SA filed Critical JT International SA
Publication of EP3654784A1 publication Critical patent/EP3654784A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • 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
    • 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
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof
    • D21H17/15—Polycarboxylic acids, e.g. maleic acid
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/30—Alginic acid or alginates
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives thereof
    • 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
    • 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
    • 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
    • D21H27/10—Packing paper
    • 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
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/14—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only
    • D21H5/16—Tobacco or cigarette paper

Definitions

  • the present invention relates to a wrapping paper for a smoking article and a smoking article comprising a wrapping paper.
  • US 5,379,788 teaches a cigarette system which has a greater number of puffs than a conventional cigarette of same dimensions and length of tobacco rod, namely at least about 14 puffs.
  • the cigarettes are intended to be partially smoked, extinguished, stored and then resmoked.
  • a filter is attached to the tobacco rod of the cigarette constructed to provide a per- puff delivery profile of tar, nicotine and flavor to the smoker which is approximately the same for both smokings of the cigarette.
  • the greater-than-normal number of puffs is achieved by employing a slower burning tobacco blend, greater tobacco density and/or burn rate retardant paper.
  • US 201 1 /083,687 A1 discloses a burn rate of a smoking article which is reduced by incorporating into the paper a filler having a median particle size larger than about 2.5 microns and thereby increasing the number of puffs.
  • Japanese Patent No. 2834325 discloses a cigarette in which a cut tobacco density is set at 300 mg/cc or more in order to decrease the combustion rate of the cut tobacco rod, thereby increasing the number of puffs provided by the cigarette.
  • the problem of the present invention is to provide a wrapping paper that can increase the puff count of a smoking article without changing the tobacco rod length or diameter and without impacting on the TNCO levels of the smoking article.
  • the inventors have found that by providing a wrapping paper with a certain porosity and a certain amount of a burning additive it is possible to increase the puff count of the smoking article.
  • a first aspect of the present invention relates to a wrapping paper for a smoking article, comprising a base paper, wherein the base paper comprises a fibrous material, a filler material and one or more burning additives, wherein a paper porosity of the base paper is of
  • a total amount of burning additive is of 0.1 to 0.7 wt.-% based on the dry weight of the base paper.
  • a smoking article comprising a charge of smokable material surrounded by a wrapping paper according to the first aspect of the invention is disclosed.
  • FIG. 1 shows an enlarged schematic perspective view showing an example of a smoking article according to the present invention.
  • a smoking article 40 shown in FIG. 1 is provided with a smokable rod 410 having a front end 410a and a base end 410b constituting an ignition end and a filter 420 having a front end 420a and a base end 420b.
  • the base end 410b of the smokable rod and the front end 420a of the filter are abutted against each other, whereby the smokable rod 410 and the filter 420 are connected by a tipping paper 430.
  • the smokable rod 410 is constituted of a rod 41 1 of tobacco filler and a wrapping paper 412 wrapping an outer circumferential surface of the tobacco filler rod 41 1 .
  • a wrapping paper 412 is constituted of a wrapping paper according to the present invention.
  • FIG. 2 is a schematic perspective view, partly broken away, showing an example of a cigarette that is wrapped with a cigarette paper having stripe-shaped burn-suppressing regions according to one embodiment of the present invention.
  • the cigarette 10 has a tobacco rod 1 1 consisting of a tobacco filler 13 that is wrapped with a wrapping paper 12 of the present invention in the form of a column.
  • An ordinary filter 15 may be attached to the proximal end (namely, the downstream end in the inhaling direction) 1 1 b of the tobacco rod 1 1 by using a tipping paper 14 according to a conventional method.
  • a plurality of stripe-shaped burn-suppressing regions 122 which are coated as will be explained in the forthcoming description, are formed on one of the surfaces of the base paper 121 that constitutes the wrapping paper 12 of the present invention. These stripe- shaped burn-suppressing regions 122 are formed apart from each other in the
  • Non-burn-suppressing regions 123 are formed between the adjacent stripe-shaped burn-suppressing regions 122. Since the regions 123 are constituted by a part of the base paper 121 , they can burn in an ordinary smoking state. Therefore, the regions 123 each act as a non-burn-suppressing region.
  • the stripe-shaped burn-suppressing regions 122 each may have a width of 1 to 6 mm in the circumferential direction. The distance between the adjacent burn-suppressing regions 122 may be 2 to 20 mm.
  • a non-burn-suppressing region 124 may be provided to the region covering a distance d from the tip 1 1 a of the base paper 121 .
  • FIG. 3 is a schematic perspective view, partly broken away, showing an example of a cigarette that is wrapped with a cigarette paper having annular band-shaped burn- suppressing regions according to another embodiment of the present invention.
  • the cigarette 20 has a similar structure to that of the cigarette 10 shown in FIG. 2, except for the structure of the burn-suppressing regions in the wrapping paper. Therefore, in FIG. 3, an identical reference number is assigned to the same element as the constitutional element in FIG. 2, and the explanation thereof is omitted.
  • annular band-shaped burn- suppressing regions 21 1 are formed on the base paper 121 of the wrapping paper 21 wrapping the tobacco filler 13, defining burn-suppressing regions. These annular band- shaped burn-suppressing regions 21 1 are formed apart from each other in the longitudinal direction of the tobacco rod 1 1 .
  • Non-burn-suppressing regions 212 are formed between the adjacent annular band- shaped burn-suppressing regions 21 1 . Since the non-burn-suppressing regions 212 are constituted by a part of the base paper 121 , they can burn in an ordinary smoking state. Therefore, the regions 212 each act as non-burn-suppressing region, as the regions 123 in FIG. 2 do.
  • the annular band-shaped burn-suppressing regions 21 1 each may have a width of 4 to 7 mm in the longitudinal direction. The distance between the adjacent burn-suppressing regions 24 may be 18 to 25 mm.
  • Smoking articles as referred to herein are not particularly limited and can for example be cigarettes, cigarillos or the like. They typically have a generally cylindrical rod shaped configuration and include a charge, roll, or column of smokable material, such as shredded tobacco (e.g. in cut filler form), which is surrounded by a paper wrapper forming a so-called "tobacco rod".
  • a cigarette or cigarillo usually also has a cylindrical filter element aligned in end-to-end relationship with the tobacco rod.
  • the filter element may, for example, comprise a plug of cellulose acetate tow, and the tow is circumscribed by a wrapper material known as "plug wrap".
  • the filter element is attached to one end of the tobacco rod using a circumscribing wrapping material known as "tipping wrapper".
  • the filter element wrapped by the tipping wrapper is known as "mouthpiece element”.
  • wt.-% is to be understood as weight percent, based on the dry weight of the base paper of the wrapping paper, unless explicitly otherwise specified. In the present disclosure, all amounts given in wt.-% in a particular embodiment add up to 100 wt.-%. The weight percent are thereby calculated by dividing the mass of each component by the dry mass of the base paper.
  • TNCO levels as referred to herein stand for tar, nicotine and carbon monoxide levels and can be measured by any suitable method. In the present invention this is done according to ISO 3308:2012.
  • the symbol "CU” herein designates the CORESTA air permeability unit that is commonly used in paper specifications by smoking article designers.
  • the CORESTA air permeability unit is defined as: "the volumetric flow rate of air in cubic centimeters per minute (cm 3 /min) passing through a 1 square centimeter (cm 2 ) sample of substrate at an applied pressure difference of 1 kilo-Pascal (kPa).” and are measured according to ISO 6565:201 1 .
  • the number of puffs of a smoking article may be measured by any suitable method. In the present invention this is done according to ISO 3308:2012.
  • the present invention relates to a wrapping paper for a smoking article comprising a base paper, wherein the base paper comprises a fibrous material, a filler material and one or more burning additives, wherein a paper porosity of the base paper is of 10 to 60 CU, and a total amount of burning additive is of 0.1 to 0.7 wt.-% based on the dry weight of the base paper.
  • the paper porosity of the base paper is 10 to 50 CU, e.g. 15 to 45 CU.
  • the paper porosity of the base paper is 10 to 20 CU, e.g. 13 to 17 CU, e.g. 15 CU.
  • the paper porosity of the base paper is 10 to 20 CU, e.g. 13 to 17 CU, e.g. 15 CU.
  • the paper porosity of the base paper is 25 to 35 CU, e.g. 28 to 32 CU, e.g. 30 CU. In further embodiments, the paper porosity of the base paper is 40 to 50 CU, e.g. 43 to 47 CU, e.g. 45 CU. This further increases the puff count of the smoking article.
  • the burning additive is included in the base paper in an amount of 0.2 to 0.6 wt.-%, e.g. 0.3 to 0.5 wt.-% based on the dry weight of the base paper.
  • the total amount of burning additive is in an amount of 0.2 to 0.4 wt.-%, e.g. 0.3 wt.-%, based on the dry weight of the base paper.
  • the total amount of burning additive is in an amount of 0.3 to 0.5 wt.-%, e.g. 0.4 wt.-%, based on the dry weight of the base paper.
  • the total amount of burning additive is in an amount of 0.4 to 0.6 wt.-%, e.g. 0.5 wt.-%, based on the dry weight of the base paper. This further increases the puff count of the smoking article.
  • the burning additive is selected from the group consisting of citrate salts, e.g. sodium and potassium citrate, acetate salts, e.g. sodium and potassium acetate, phosphate salts, e.g. sodium and potassium phosphate, tartrate salts, e.g. sodium and potassium tartrate, nitrate salts, e.g. sodium and potassium nitrate, or mixtures thereof.
  • citrate salts e.g. sodium and potassium citrate
  • acetate salts e.g. sodium and potassium acetate
  • phosphate salts e.g. sodium and potassium phosphate
  • tartrate salts e.g. sodium and potassium tartrate
  • nitrate salts e.g. sodium and potassium nitrate
  • the burning additive is not particularly limited, as long as it is suitable for use in a smoking article.
  • citrate salts are used.
  • the amount of filler in the base paper is 17 to 28 wt.-%, e.g. 20 to 25 wt.-%, based on the dry weight of the base paper.
  • the amount of filler in the base paper is 19 to 25 wt.-%, e.g. 21 to 23 wt.-%, e.g. 22 wt.-%, based on the dry weight of the base paper.
  • the amount of filler in the base paper is 22 to 28 wt.-%, e.g. 24 to 26 wt.-%, e.g. 25 wt.-%, based on the dry weight of the base paper.
  • the amount of filler in the base paper is 17 to 23 wt.-%, e.g. 19 to 21 wt.-%, e.g. 20 wt.-%, based on the dry weight of the base paper. This amount of filler provides an adequate resistance to manufacturing forces to which the wrapping paper is subject to during high speed manufacturing and also allows obtaining a desired opacity of the wrapping paper.
  • the filler in the wrapping paper is selected from the group of calcium carbonate, such as precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC), kaolin, clay, talc, titanium dioxide, alumina trihydrate, precipitated silica and silicates (PSS), and mixtures thereof.
  • PCC precipitated calcium carbonate
  • GCC ground calcium carbonate
  • kaolin such as clay, talc, titanium dioxide, alumina trihydrate, precipitated silica and silicates (PSS), and mixtures thereof.
  • PSC precipitated silica and silicates
  • the filler is not particularly limited, as long as it is suitable for use in a smoking article.
  • calcium carbonate is used.
  • the paper porosity of the base paper is 10 to 20 CU, e.g. 13 to 17 CU, e.g. 15 CU
  • the total amount of burning additive is in an amount of 0.2 to 0.4 wt.-%, e.g. 0.3 wt.-%, based on the dry weight of the base paper
  • the amount of filler in the base paper is 19 to 25 wt.-%, e.g. 21 to 23 wt.-%, e.g. 22 wt.-%, based on the dry weight of the base paper.
  • the paper porosity of the base paper is 25 to 35 CU, e.g. 28 to 32 CU, e.g.
  • the total amount of burning additive is in an amount of 0.3 to 0.5 wt.-%, e.g. 0.4 wt.-%, based on the dry weight of the base paper, and the amount of filler in the base paper is 22 to 28 wt.-%, e.g. 24 to 26 wt.-%, e.g. 25 wt.-%, based on the dry weight of the base paper.
  • the paper porosity of the base paper is 40 to 50 CU, e.g. 43 to 47 CU, e.g. 45 CU
  • the total amount of burning additive is in an amount of 0.4 to 0.6 wt.-%, e.g. 0.5 wt.-%, based on the dry weight of the base paper
  • the amount of filler in the base paper is 17 to 23 wt.-%, e.g. 19 to 21 wt.-%, e.g. 20 wt.-%, based on the dry weight of the base paper.
  • the balance to 100 wt.-% of the dry weight of the base paper is essentially filler and fibrous material.
  • the basis weight of the base paper is 20 to 26 g/m 2 , e.g. 21 to 24 g/m 2 , or e.g. 23 to 25 g/m 2 , e.g. 24 g/m 2 .
  • the diffusion capacity of the base paper is 1 .0 to 2.0 cm/s, e.g. 1 .0 to 1 .8 cm/s, or e.g. 1 .2 to 2.0 cm/s, or e.g. 1 .2 to 1 .8 cm/s, or e.g. 1 .2 to 1 .6 cm/s, or e.g. 1 .4 to 1 .8 cm/s, or e.g. 1 .4 to 1 .6 cm/s.
  • the diffusion capacity of a wrapping paper is measured according to CORESTA Recommended Method No. 77 (CRM No. 77 of April 2014).
  • the wrapping paper may be used in a "low ignition propensity" smoking article.
  • a "low ignition propensity" smoking article is one that has been designed to be less likely than a conventional cigarette to ignite furnishings and equipment, e.g. soft furnishings such as a couch or mattress.
  • a low ignition propensity smoking article will continue to burn when freely suspended such as in the holder of an ashtray or when being held in the hand without puffing ("free burn"). The tendency for a cigarette to go out during free burn is referred to as "self-extinguishment”.
  • LIP (referred to as LIP) may be measured by any suitable method. In the present invention this is done according to ISO 12863:2010.
  • FASE The likelihood of a smoking article to extinguish while burning in free air (referred to as FASE) may be measured by any suitable method. In the present invention this is done according to ISO 12863:2010.
  • the base paper may comprise a plurality of burn-suppressing regions that are provided apart from each other.
  • the burn- suppressing regions may be provided on a surface of the base paper or embedded within a matrix of the base paper.
  • the plurality of burn-suppressing regions may be provided on a same surface of the base paper.
  • one or more of the plurality of burn- suppressing regions may be provided on a first surface of the base paper and the remaining of the plurality of burn-suppressing regions may be provided on a second, opposite surface of the base paper.
  • the wrapping paper is formed of the base paper, optionally with burn- suppressing regions provided therein.
  • regions of the wrapping paper which are outside the burn-suppressing regions are to be considered as non-burn suppressing regions the latter being the same as the base paper, the present application uses the terms "non- burn suppressing regions" and "base paper” interchangeably.
  • the burn-suppressing regions are in a form of stripes. In one embodiment all stripes are parallel to each other. In another embodiment at least two stripes are non-parallel to each other.
  • These burn-suppressing regions may contain additives that reduce the diffusion capacity of the base paper.
  • the additives that may be applied to the wrapper may be any of those used in the art to reduce the ignition propensity of smoking articles.
  • the burn-suppressing regions contain at least one additive that reduces the diffusion capacity of the base paper
  • the additives are selected from the group consisting of alginates, polyvinyl alcohol, polyvinyl acetates, including partially hydrolysed derivatives and copolymers, modified and unmodified starches, cellulose derivatives, such as carboxy-methyl cellulose, ethyl-cellulose and hydroxymethyl-cellulose, and combinations thereof.
  • the one or more additives may further comprise inorganic ions, such as phosphates, mono- or divalent metal salts, silicas and other agents known in the art to modify the burn rate, and combinations thereof.
  • the additives may yet further comprise natural gums, such as guar gum.
  • the additives may be applied to the wrapping paper with a liquid carrier, which may be in the form of a solution, suspension, emulsion or a combination thereof.
  • the liquid carrier may be aqueous, non-aqueous or a combination thereof and may contain an emulsifying agent depending on the nature of the additives.
  • a suspension of additive may be applied within an aqueous carrier.
  • the aqueous carrier penetrates the base paper transporting the additive into its matrix. Once the carrier evaporates, the additive is left within the base paper matrix where it can reduce the diffusion capacity either before or during the burning of the smoking article. Once applied to the base paper, the liquid carrier is allowed to evaporate allowing the wrapping paper to dry and for the additive to set within the matrix of the base paper.
  • the diffusion capacity of the burn-suppressing regions is 0.10 to 0.35 cm/s, e.g. 0.15 to 0.35 cm/s, or e.g. 0.10 to 0.30 cm/s, or e.g. 0.15 to 0.30 cm/s, or e.g. 0.15 to 0.25 cm/s, or e.g. 0.20 to 0.30 cm/s, or e.g. 0.20 cm/s to 0.25 cm/s.
  • the ratio of diffusion capacity between the burn-suppressing regions and the non-burn-suppressing regions in the wrapping paper is in the range of 5% to 35%, e.g. 10% to 35%, or e.g. 15% to 35%, or e.g. 5% to 30%, or e.g. 10% to 30%, or e.g. 15% to 30%, or e.g. 10% to 25%, or e.g. 15% to
  • the ratio between the diffusion capacity in the burn-suppressing regions to the diffusion capacity of the base paper is comprised between 5% to 35%, e.g. 10% to 35%, or e.g. 15% to 35%, or e.g. 5% to 30%, or e.g. 10% to 30%, or e.g. 15% to 30%, or e.g. 10% to 25%, or e.g. 15% to 25%.
  • the fibrous material is a cellulosic fibrous material.
  • the present invention further relates to a smoking article comprising a wrapping paper as in the embodiments described above and in which the wrapping paper surrounds a charge, roll or column of smokable material to form a tobacco rod.
  • the burn-suppressing regions are in a form of stripes extending in a longitudinal direction of the tobacco rod and being spaced apart from each other in a circumferential direction of the tobacco rod.
  • the burn-suppressing regions are in a form of round annular bands extending in a circumferential direction of the tobacco rod and being spaced from each other in a longitudinal direction of the tobacco rod.
  • the positive effect of the present invention i.e. the combination of an increased number of puffs without changing the tobacco rod length or diameter is due to the specific combination of a paper porosity of 10 to 60 CU and at least one burning additive in an amount of 0.1 to 0.7 wt.-% as laid out above.
  • Two 84 mm low ignition propensity cigarettes were prepared with the same tobacco blend. These cigarettes had both a 57 mm tobacco rod attached to a 27 mm filter by a tipping paper. The filters were cut from the same filter rod and the tipping papers were cut from the same reel. The tobacco rod of cigarette C was wrapped in the prior art wrapping paper from example 1 (paper A), while cigarette D was wrapped in the wrapping paper according to the invention from example 1 (paper B). These cigarettes were measured under ISO 3308:2012 conditions to determine their

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un article à fumer comprenant un papier d'enveloppe, le papier d'enveloppe ayant une porosité de papier comprise entre 30 et 60 CU, au moins un additif de combustion suivant une quantité comprise entre 0,3 et 0,7 % en poids.sur la base du poids total du papier d'enveloppe, et une charge.
EP18755454.8A 2017-08-24 2018-08-14 Papier d'enveloppe pour un article à fumer Withdrawn EP3654784A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17187689.9A EP3446573B1 (fr) 2017-08-24 2017-08-24 Papier d'emballage pour article à fumer
PCT/EP2018/072015 WO2019038133A1 (fr) 2017-08-24 2018-08-14 Papier d'enveloppe pour un article à fumer

Publications (1)

Publication Number Publication Date
EP3654784A1 true EP3654784A1 (fr) 2020-05-27

Family

ID=59702574

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EP17187689.9A Active EP3446573B1 (fr) 2017-08-24 2017-08-24 Papier d'emballage pour article à fumer
EP18755455.5A Active EP3654785B1 (fr) 2017-08-24 2018-08-14 Papier d'emballage pour article à fumer
EP18755454.8A Withdrawn EP3654784A1 (fr) 2017-08-24 2018-08-14 Papier d'enveloppe pour un article à fumer

Family Applications Before (2)

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EP17187689.9A Active EP3446573B1 (fr) 2017-08-24 2017-08-24 Papier d'emballage pour article à fumer
EP18755455.5A Active EP3654785B1 (fr) 2017-08-24 2018-08-14 Papier d'emballage pour article à fumer

Country Status (9)

Country Link
US (2) US20210030055A1 (fr)
EP (3) EP3446573B1 (fr)
JP (2) JP2020531029A (fr)
KR (2) KR20200045494A (fr)
CN (2) CN111031815B (fr)
EA (3) EA202191093A1 (fr)
ES (1) ES2919339T3 (fr)
PL (2) PL3446573T3 (fr)
WO (2) WO2019038133A1 (fr)

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JPH07327654A (ja) 1994-06-08 1995-12-19 Masahiro Kishida 一服たばこ
JP3049857U (ja) 1997-10-29 1998-06-26 照子 西井 二酸化炭素ガス半減そして有害物質収量半減 を目的とするシガレットの構造
US6827087B2 (en) * 2002-11-19 2004-12-07 Joseph T. Wanna Cigarette with burn rate modification
US20060021625A1 (en) * 2004-07-30 2006-02-02 Philip Morris Usa Inc. Make-your-own smoking article with controlled burn rate
UA90299C2 (uk) * 2005-03-15 2010-04-26 Джапан Тобакко Инк. Сигаретний папір з низьким поширенням полум'я
ES2452320T3 (es) * 2006-03-30 2014-03-31 Japan Tobacco, Inc. Papel de envolver para cigarrillos con predisposición a una baja ignición
PT2158817E (pt) * 2007-02-23 2013-02-01 Schweitzer Mauduit Int Inc Artigo de fumar com características de tendência de ignição reduzida
TW201026243A (en) * 2008-11-12 2010-07-16 Japan Tobacco Inc Cigarette paper of low fire-spread rate
GB0903136D0 (en) * 2009-02-25 2009-04-08 British American Tobacco Co Smoking articles and method for manufacturing smoking articles
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KR20130050932A (ko) * 2010-03-22 2013-05-16 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 저점화 성향의 흡연 물품 포장재, 흡연 물품, 방법 및 장치
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Also Published As

Publication number Publication date
EP3446573B1 (fr) 2020-11-04
EA202090288A1 (ru) 2020-06-11
KR20200045493A (ko) 2020-05-04
PL3446573T3 (pl) 2021-05-04
ES2919339T3 (es) 2022-07-26
EA202090289A1 (ru) 2020-06-11
US20200163373A1 (en) 2020-05-28
EP3446573A1 (fr) 2019-02-27
EA038118B1 (ru) 2021-07-08
JP2020531029A (ja) 2020-11-05
PL3654785T3 (pl) 2022-07-11
WO2019038136A1 (fr) 2019-02-28
WO2019038133A1 (fr) 2019-02-28
EP3654785A1 (fr) 2020-05-27
JP2020531031A (ja) 2020-11-05
CN111031815A (zh) 2020-04-17
CN111065283A (zh) 2020-04-24
KR20200045494A (ko) 2020-05-04
CN111065283B (zh) 2022-04-26
EP3654785B1 (fr) 2022-03-30
EA202191093A1 (ru) 2021-07-20
EA038708B1 (ru) 2021-10-07
CN111031815B (zh) 2022-02-22
US20210030055A1 (en) 2021-02-04

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