EP2818060B1 - Cigarette - Google Patents
Cigarette Download PDFInfo
- Publication number
- EP2818060B1 EP2818060B1 EP12868950.2A EP12868950A EP2818060B1 EP 2818060 B1 EP2818060 B1 EP 2818060B1 EP 12868950 A EP12868950 A EP 12868950A EP 2818060 B1 EP2818060 B1 EP 2818060B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- filter
- opacity
- tipping paper
- absorbents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 235000019504 cigarettes Nutrition 0.000 title claims description 43
- 239000000463 material Substances 0.000 claims description 70
- 241000208125 Nicotiana Species 0.000 claims description 31
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 31
- 239000002250 absorbent Substances 0.000 claims description 31
- 230000002745 absorbent Effects 0.000 claims description 31
- 238000009423 ventilation Methods 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 18
- 230000000052 comparative effect Effects 0.000 description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 13
- 230000000007 visual effect Effects 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 230000001953 sensory effect Effects 0.000 description 10
- 230000000875 corresponding effect Effects 0.000 description 8
- 239000000945 filler Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 229920006221 acetate fiber Polymers 0.000 description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 6
- 229920000297 Rayon Polymers 0.000 description 6
- 239000002964 rayon Substances 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
- A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/042—Cigars; Cigarettes with mouthpieces or filter-tips with mouthpieces
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/047—Cigars; Cigarettes with mouthpieces or filter-tips extensible
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
-
- 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
- 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
- D21H21/28—Colorants ; Pigments or opacifying agents
Definitions
- the present invention relates to a cigarette in which opacity of an outward appearance of a filter portion is improved.
- a cigarette with a filter (hereinafter, referred to simply as a cigarette) has a structure in which a filter portion and a tobacco portion containing cut tobaccos are placed opposite to each other at their ends and integrally connected with each other by wrapping the whole of the filter portion and a base end part of the tobacco portion with a tipping paper.
- black absorbents such as activated carbons are dispersed in at least one of a plurality of filter sections constituting the filter portion of the above described cigarette from a viewpoint of a health risk or desire of a milder smoking taste.
- such a cigarette has a problem that the black absorbents in the filter portion can be seen through outwardly.
- the tipping papers described in these documents create disadvantages such as a dramatic decrease in rigidity of the tipping paper (soft paper), a decrease of bonding force between the fiber and fiber in the tipping paper (paper easily peeled off) and the like.
- wrinkles or a breaking of the tipping paper arises in a printing process or in a rolling-up process, causing a large amount of paper dust.
- the above described tipping papers are more likely to be wet and thus, when a consumer puts the filter portion of the cigarette in his (her) mouth, the above described tipping paper is more likely to be broken due to saliva.
- an effect of increasing opacity by increasing the filler is curbed so that a relatively large amount of filler is needed to further increase the opacity of the tipping paper.
- tipping paper thicker is effective in increasing opacity without increasing the filler.
- a difference between an inner circumferential length and an outer circumferential length in the thick tipping paper becomes large when the thick tipping paper is rolled, so that a roundness of the filter portion is likely to be distorted and many wrinkles is likely to be generated on the rolled thick tipping paper.
- An object of the present invention is to provide a cigarette having high quality in which outward opacity of a filter portion is improved to 92% or more, so that black absorbents of the filter portion are hard to be seen through and a white clean impression of the filter portion is obtained.
- a cigarette comprising:
- the cigarette according to the embodiment comprises a filter portion having a plurality of filter sections arranged to be integrated with each other, a material paper winding around each filter section and a shape-forming paper winding around the integrated filter sections around each of which the material paper is wound, and a tobacco portion in which tobacco material is rolled by a cigarette paper.
- the filter portion and the tobacco portion are placed opposite to each other at their ends and integrally connected with each other by wrapping the whole of the filter portion and a base end part of the tobacco portion with a tipping paper.
- At least one of the filter sections contains black absorbents dispersed therein.
- the material paper winding around the filter section containing the black absorbents has opacity of 78% or more. Ventilation holes are opened in advance in a part of the tipping paper positioned on the filter section containing no black absorbents.
- the inventors studied a relationship between a change of outward opacity of a filter portion (a region in which a tipping paper is wound around and which includes a filter section in which activated carbons are dispersed) and a degree (visual sensory value) which indicates how activated carbons in the filter section can be seen through the tipping paper on the filter portion, and obtained a result shown in FIG. 1 .
- a change of outward opacity of a filter portion a region in which a tipping paper is wound around and which includes a filter section in which activated carbons are dispersed
- a degree visual sensory value
- a is a characteristic line when a filter section to which 25 mg of activated carbons is added per 10 mm is used
- "b” is a characteristic line when a filter section to which 50 mg of activated carbons is added per 10 mm is used
- "c” is a characteristic line when a filter section to which 75 mg of activated carbons is added per 10 mm is used.
- Arrows in FIG. 1 indicate opacity of the tipping paper.
- outward opacity of the filter portion of at least 92%, preferably 94%, is needed to realize a level of "dimly visible", in other words "hardly visible", in the filter portion.
- outward opacity of the filter portion when the shadows are not able to be seen through at all is 98%.
- the inventors found that there is a limit to improve opacity of the filter portion by increasing opacity of the tipping paper. And, the inventors particularly focus on a material paper wound around each of filter sections, among a filter wrapping paper (generic name for both of a material paper and a shape-forming paper) of the filter portion, and produce a cigarette with a filter portion having outward opacity of 92% or more to produce a white clean impression of the filter portion while a conventional tipping paper can be used and a filter ventilation can be maintained.
- a filter wrapping paper generic name for both of a material paper and a shape-forming paper
- the main function required for the filter wrapping paper is a shape-forming function for a filter and a predetermined permeability. And, since the filter wrapping paper is hidden by the tipping paper and normally invisible, the filter wrapping paper has not been required to have high opacity. Requiring the filter wrapping paper to have such an arbitrarily high level of opacity can be firstly focused on only by the above described view point of the present inventors and it is difficult even for those skilled in the art to think of such an idea.
- a permeability required for the wrapping paper is to maintain filter ventilation.
- a level of opacity of each of a filter wrapping paper and a tipping paper and permeability thereof are correlated, and the permeability tends to decrease with an increase of the level of opacity. That is, the filter wrapping paper with a high level of opacity has air permeability lower than that of a conventional filter wrapping paper, so that it is difficult to maintain sufficient filter ventilation.
- a cigarette including a filter portion having outward opacity of at least 92% while sufficient ventilation being maintained can be obtained by winding only a material paper with opacity higher (78% or more) than that of a conventional material paper around a filter section containing black absorbents, using a conventional paper with high permeability as the material paper winding around a filter section containing no black absorbents and as a shape-forming paper winding around all of the filter sections, and further setting opening positions of ventilation holes of a tipping paper wrapping around the filter portion and the tobacco portion within a range of the filter section containing no black absorbents.
- a general-purpose tipping paper having appropriate rigidity and thickness and also having a good roll-up characteristic can be used, there is no need to add a large amount of fillers to the tipping paper or to make the tipping paper thicker and, therefore an excellent cigarette in which streaks of wrinkles are hardly visible can be obtained.
- the plurality of filter sections used in the embodiment there is, for example two-sections type (dual type) or three-sections type (triple type).
- the filter section can be formed from, for example, a tow of cellulose acetate fibers.
- the tow of cellulose acetate fibers can be bound by treating it with triacetin.
- activated carbons can be used as the black absorbents dispersed in the filter section. It is preferable that 25 mg or more, more preferably 50 mg or more, of the black absorbents are dispersed for a length (10 mm) of the filter section.
- the material paper wound around the filter section containing the black absorbents has opacity of 78% or more.
- a material paper preferably has a composition of, for example, pulp and fillers such as calcium carbonate, titanium oxide, etc.
- the more preferable opacity of the material paper is 85% or more. If opacity of the material paper is increased excessively, it becomes difficult to make the material paper. Therefore, it is preferable to set the upper limit of opacity to 95%.
- the material paper wound around the filter section containing the black absorbents preferably has a thickness of 30 ⁇ m to 100 ⁇ m.
- Opacity can be measured by a measuring method of an example described later.
- the material paper wound around the filter section containing no black absorbents is a conventional product.
- the material paper whose opacity is 20% to 40% can be used.
- the conventional material paper preferably has a thickness of 30 ⁇ m to 100 ⁇ m.
- the shape-forming paper wound around the filter sections around each of which the material paper is wound and which are arranged to be integrated with each other is a conventional product.
- the shape-forming paper having opacity of 20% to 40% can be used.
- the shape-forming paper preferably has a thickness of 30 ⁇ m to 100 ⁇ m.
- the tipping paper is a conventional product.
- the tipping paper having opacity of 78% to 85% can be used.
- the tipping paper preferably has a thickness of 30 ⁇ m to 100 ⁇ m.
- FIG. 2 shows a cigarette having a dual type filter portion according to the embodiment.
- FIG. 2(a) is a front perspective view
- FIG. 2(b) is a sectional view along a line b-b in FIG. 2(a)
- FIG. 2(c) is a sectional view along a line c-c in FIG. 2(a) .
- the cigarette having the dual type filter portion includes a tobacco portion 1 and a filter portion 2.
- the tobacco portion 1 is formed by rolling a cigarette paper 12 around cut tobaccos 11 in a cylindrical shape.
- the filter portion 2 includes a first filter section 21a arranged in a side of the tobacco portion 1 and a second filter section 21b adjacent to the first filter section 21a.
- the first filter section 21a is shaped by winding a first material paper 23a around a tow of acetate fibers or folded nonwoven fabrics of pulp, in which black absorbents, for example activated carbons 22, are dispersed, to form a cylindrical shape.
- the first material paper 23a has opacity of 78% or more and the thickness of, for example, 30 ⁇ m to 100 ⁇ m.
- the second filter section 21b is shaped by winding a second material paper 23b around a tow of acetate fibers or folded nonwoven fabrics of pulp to form a cylindrical shape. That is, the second filter section 21b contains no black absorbents.
- the second material paper 23a is a conventional material paper having, for example, opacity of 20% to 40% and a thickness of 30 ⁇ m to 100 ⁇ m.
- the shape-forming paper 24 is a conventional shape-forming paper having, for example, opacity of 20% to 40% and a thickness of 30 ⁇ m to 100 ⁇ m.
- the tobacco portion 1 and the filter portion 2 are integrated by placing their ends to be opposite to each other and by wrapping the whole of an outer circumferential surface of the filter portion 2 and a part of an outer circumferential surface of the tobacco portion 1 near the opposed ends with a tipping paper 3.
- the tipping paper 3 has ventilation holes 31 opened in advance in a part of the tipping paper 3 corresponding to the second filter section 21b containing no black absorbents and positioned in a free end side of the filter portion 2, the part extending in a circumferential direction of the filter portion.
- the tipping paper 3 is a conventional tipping paper having, for example, opacity of 78% to 85% and a thickness of 30 ⁇ m to 100 ⁇ m.
- FIG. 3 shows a cigarette having a triple type filter portion according to the embodiment.
- FIG. 3(a) is a front perspective view
- FIG. 3(b) is a sectional view along a line b-b in FIG. 3(a)
- FIG. 3(c) is a sectional view along a line c-c in FIG. 3(a)
- FIG. 3(d) is a sectional view along d-d line in FIG. 3A .
- the same reference numerals indicate members similar to those in FIG. 2 and descriptions thereof are omitted.
- the cigarette having the triple type filter portion includes a filter portion 2 having a first filter section 201a, a second filter section 201b and a third filter section 201c.
- the first to third filter sections 201a to 201c are arranged in this order from a tobacco portion 1.
- each of the first and third filter sections 201a, 201c is shaped by winding first or third material paper 203a or 203c around a tow of acetate fibers or folded nonwoven fabrics of pulp to form a cylindrical shape. That is, the first and third filter sections 201a, 201c contain no black absorbents.
- Each of the first and third material papers 203a, 203c is a conventional material paper having, for example, opacity of 20% to 40% and the thickness of 30 ⁇ m to 100 ⁇ m.
- the second filter section 201b arranged between the first and third filter sections 201a, 201c is shaped by winding a second material paper 203b around a tow of acetate fibers or folded nonwoven fabrics of pulp, in which black absorbents, for example, activated carbons 202, are dispersed, to form a cylindrical shape.
- the second material paper 203b has opacity of 78% or more and a thickness of, for example, 30 ⁇ m to 100 ⁇ m.
- the shape-forming paper 204 is a conventional shape-forming paper having, for example, opacity of 20% to 40% and a thickness of 30 ⁇ m to 100 ⁇ m.
- Ventilation holes 31 are opened in advance to be arranged along a circumferential direction of the part.
- the tipping paper 3 is a conventional tipping paper having, for example, opacity of 78% to 85% and a thickness of 30 ⁇ m to 100 ⁇ m.
- the ventilation holes may be opened in advance in another part of the tipping paper 3 to be arranged in a circumferential direction of the other part, the other part corresponding to the first filter section 201a positioned in a side of the tobacco portion 1.
- the ventilation holes may be opened in advance in each of both of the parts (two locations) of the tipping paper 3 to be arranged in the circumferential direction of each of both of the parts, these parts corresponding to both of the first and third filter sections 201a, 201c.
- a first filter section (charcoal section) is formed by dispersing coconut shell activated carbons of the center grain size of 50 meshes in acetate fibers of 3 denier and then by rolling the acetate fibers with a first material paper to have a circumferential length of 24.5 mm. An amount of dispersed activated carbons is set to 50 mg for a length of 10 mm of the filter section.
- a second filter section without coconut shell activated carbons dispersed therein is formed by rolling acetate fibers of 3 denier with a second material paper to have a circumferential length of 24.5 mm.
- the first and second filter sections wound by such material papers are placed opposite to each other at their ends and then integrally wound by the shape-forming paper, so that the filter portion of the dual type shown in FIG. 2 is formed.
- the formed filter portion and a tobacco portion formed by rolling cut tobaccos with a cigarette paper to a cylindrical shape are placed opposite to each other at their ends, and then the whole of an outer circumferential surface of the filter portion and a part of an outer circumferential surface of the tobacco portion near to the opposed end are wrapped by a tipping paper to make them being integrated, so that the cigarette shown in FIG. 2 is formed.
- Ventilation holes are opened in advance in a part of the tipping paper corresponding to the second filter section containing no black absorbents and positioned in a free end side of the filter portion cigarette holder side, the ventilation holes being arranged along a circumferential direction of the filter portion.
- the obtained cigarette has a total length of 55 mm, in which a length of the tobacco portion is 30 mm and a length of the filter portion is 25 mm (the first filter section (charcoal filter section): 10 mm, the second filter section: 15 mm).
- first and second material papers, a shape-forming paper and a tipping paper individually having a basis weight, a thickness, a composition and opacity shown in Table 1 below are used.
- Paper quality is measured as described below.
- these papers are conditioned for 24 hours or more under a conditioning environment at 22°C and 50% humidity.
- Cigarettes having structures similar to those of Comparative Examples 1 and 2, except that papers having basis weights, thicknesses, compositions and opacities shown in Table 2 below are used for the first and second material papers, the shape-forming paper and the tipping paper, are formed. The thickness and opacity of each paper are measured similarly to those of Comparative Examples 1 and 2.
- Cigarettes having structures similar to those of Comparative Examples 1 and 2, except that papers having basis weights, thicknesses, compositions and opacities shown in Table 3 below are used for the first and second material papers, the shape-forming paper and the tipping paper, are formed. The thickness and opacity of each paper are measured similarly to those of Comparative Examples 1 and 2.
- opacity when the first material paper, the shape-forming paper and the tipping paper are layered up and opacity when the second material paper, the shape-forming paper and the tipping paper are layered up are measured similarly to those of the Comparative Examples 1 and 2.
- the evaluation is indicated by one of 5 degrees, in which how an appearance of the filter portion originating from activated carbons in the charcoal filter section can be seen from gray to black. In the visual sensory test by 16 panelists, apparently different visual sensory values from those of other panelists are canceled.
- Opacity *1 shows opacity when the first material paper, the shape-forming paper and the tipping paper are layered up
- the lower part thereof shows opacity when the second material paper, the shape-forming paper and the tipping paper are layered up.
- the second filter section containing no activated carbons is wound by the second material paper having air permeability of 10000 CU and the shape-forming paper. And, even after winding a tipping paper around the second filter section, a sufficient ventilation effect can be achieved at a part of the tipping paper corresponding to the second filter section because ventilation holes are opened in advance in the part of the tipping paper.
- Example 4 since the first material paper having opacity of 85% is used to wind around the first filter section in which activated carbons are dispersed and the tipping paper having high opacity (85%) is used, outward opacity obtained by overlaying the first material paper, the shape-forming paper and the tipping paper on the first filter section in which activated carbons are dispersed exceeds 94% expected as outward opacity to provide a more white clean impression.
- the second filter section containing no activated carbons is wound by the second material paper having air permeability of 10000 CU and the shape-forming paper. And, even after winding a tipping paper around the second filter section, a sufficient ventilation effect can be achieved at a part of the tipping paper corresponding to the second filter section because ventilation holes are opened in advance in the part of the tipping paper.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Paper (AREA)
Description
- The present invention relates to a cigarette in which opacity of an outward appearance of a filter portion is improved.
- A cigarette with a filter (hereinafter, referred to simply as a cigarette) has a structure in which a filter portion and a tobacco portion containing cut tobaccos are placed opposite to each other at their ends and integrally connected with each other by wrapping the whole of the filter portion and a base end part of the tobacco portion with a tipping paper. In recent years, black absorbents such as activated carbons are dispersed in at least one of a plurality of filter sections constituting the filter portion of the above described cigarette from a viewpoint of a health risk or desire of a milder smoking taste. However, such a cigarette has a problem that the black absorbents in the filter portion can be seen through outwardly.
- As a conventional technology to increase outward opacity of the filter portion, focusing on the tipping paper arranged as the outermost layer of the filter portion, and increasing the opacity of the tipping paper generally up to 85% is known by changing a type of filler, increasing a mixing proportion of filler or using micro-diameter filler (see Japanese Patent Application KOKAI Publication No.
8-246396 10-219599 11-36196 WO 02069745 A1 claim 1. However, the tipping papers described in these documents create disadvantages such as a dramatic decrease in rigidity of the tipping paper (soft paper), a decrease of bonding force between the fiber and fiber in the tipping paper (paper easily peeled off) and the like. As a result, wrinkles or a breaking of the tipping paper arises in a printing process or in a rolling-up process, causing a large amount of paper dust. In addition, the above described tipping papers are more likely to be wet and thus, when a consumer puts the filter portion of the cigarette in his (her) mouth, the above described tipping paper is more likely to be broken due to saliva. Further, in such a tipping paper having a certain level of opacity, an effect of increasing opacity by increasing the filler is curbed so that a relatively large amount of filler is needed to further increase the opacity of the tipping paper. - Making the tipping paper thicker is effective in increasing opacity without increasing the filler. However, if the thick tipping paper is used to achieve high opacity, a difference between an inner circumferential length and an outer circumferential length in the thick tipping paper becomes large when the thick tipping paper is rolled, so that a roundness of the filter portion is likely to be distorted and many wrinkles is likely to be generated on the rolled thick tipping paper.
- On the other hand, there is a tendency to use more black absorbents like activated carbons responding to a desire of the aforementioned milder smoking taste. Thus, if it is intended to obtain a white clean impression of the filter portion is intended to give, it is not necessarily sufficient to increase the opacity of the tipping paper to 80% to 85%, as disclosed in the above described documents.
- An object of the present invention is to provide a cigarette having high quality in which outward opacity of a filter portion is improved to 92% or more, so that black absorbents of the filter portion are hard to be seen through and a white clean impression of the filter portion is obtained.
- According to the present invention, a cigarette is provided, the cigarette comprising:
- a filter portion including a plurality of filter sections arranged to be integrated with each other, a material paper winding around each of the filter sections and a shape-forming paper winding around the integrated filter sections around each of which the material paper is wound;
- a tobacco portion in which tobacco material is rolled by a cigarette paper; and
- a tipping paper wound around the entire filter portion and a base end part of the tobacco portion after placing the filter portion and the tobacco portion opposite to each other at their ends, so that the filter portion and the tobacco portion are integrally connected with each other,
- wherein at least one of the filter sections contains black absorbents dispersed therein,
- the material paper winding around the filter section containing the black absorbents has opacity of 78% or more, and
- the tipping paper has ventilation holes opened in advance in its part positioned on the filter section containing no black absorbents.
-
-
FIG. 1 is a diagram showing a relationship between a change of outward opacity of a filter portion (around which a tipping paper is wound and which includes a filter section in which activated carbons are dispersed) and a degree (visual sensory value) which indicates how activated carbons in the filter section can be seen through the tipping paper on the filter portion. -
FIG. 2 shows a cigarette including a dual type filter portion according to an embodiment. -
FIG. 3 shows a cigarette including a triple type filter portion according to the embodiment. - A cigarette according to an embodiment of the present invention will be described in detail below.
- The cigarette according to the embodiment comprises a filter portion having a plurality of filter sections arranged to be integrated with each other, a material paper winding around each filter section and a shape-forming paper winding around the integrated filter sections around each of which the material paper is wound, and a tobacco portion in which tobacco material is rolled by a cigarette paper. The filter portion and the tobacco portion are placed opposite to each other at their ends and integrally connected with each other by wrapping the whole of the filter portion and a base end part of the tobacco portion with a tipping paper. At least one of the filter sections contains black absorbents dispersed therein. The material paper winding around the filter section containing the black absorbents has opacity of 78% or more. Ventilation holes are opened in advance in a part of the tipping paper positioned on the filter section containing no black absorbents.
- The inventors studied a relationship between a change of outward opacity of a filter portion (a region in which a tipping paper is wound around and which includes a filter section in which activated carbons are dispersed) and a degree (visual sensory value) which indicates how activated carbons in the filter section can be seen through the tipping paper on the filter portion, and obtained a result shown in
FIG. 1 . InFIG. 1 , "a" is a characteristic line when a filter section to which 25 mg of activated carbons is added per 10 mm is used, "b" is a characteristic line when a filter section to which 50 mg of activated carbons is added per 10 mm is used and "c" is a characteristic line when a filter section to which 75 mg of activated carbons is added per 10 mm is used. Arrows inFIG. 1 indicate opacity of the tipping paper. - As a result in
FIG. 1 , shadows of the activated carbons can be easily seen when a general-purpose tipping paper having opacity (about 78% to 85%) is used and the shadows becomes denser with an increase of an added amount of the activated carbons. An extremely high level of opacity of 92% or more is required for a tipping paper to make a level of opacity of the tipping paper still being less visible than a level of "dimly visible" at which it is difficult to recognize the shadows if it is not tried enough to see them through the tipping paper. As described above, it is extremely difficult to make practically a tipping paper having such opacity. - Also, as the result, it becomes obviously that outward opacity of the filter portion of at least 92%, preferably 94%, is needed to realize a level of "dimly visible", in other words "hardly visible", in the filter portion. In this connection, outward opacity of the filter portion when the shadows are not able to be seen through at all is 98%.
- Based on the above described result of
FIG. 1 , the inventors found that there is a limit to improve opacity of the filter portion by increasing opacity of the tipping paper. And, the inventors particularly focus on a material paper wound around each of filter sections, among a filter wrapping paper (generic name for both of a material paper and a shape-forming paper) of the filter portion, and produce a cigarette with a filter portion having outward opacity of 92% or more to produce a white clean impression of the filter portion while a conventional tipping paper can be used and a filter ventilation can be maintained. - That is, the main function required for the filter wrapping paper is a shape-forming function for a filter and a predetermined permeability. And, since the filter wrapping paper is hidden by the tipping paper and normally invisible, the filter wrapping paper has not been required to have high opacity. Requiring the filter wrapping paper to have such an arbitrarily high level of opacity can be firstly focused on only by the above described view point of the present inventors and it is difficult even for those skilled in the art to think of such an idea.
- A permeability required for the wrapping paper is to maintain filter ventilation. In general, a level of opacity of each of a filter wrapping paper and a tipping paper and permeability thereof are correlated, and the permeability tends to decrease with an increase of the level of opacity. That is, the filter wrapping paper with a high level of opacity has air permeability lower than that of a conventional filter wrapping paper, so that it is difficult to maintain sufficient filter ventilation.
- As described above, a cigarette including a filter portion having outward opacity of at least 92% while sufficient ventilation being maintained can be obtained by winding only a material paper with opacity higher (78% or more) than that of a conventional material paper around a filter section containing black absorbents, using a conventional paper with high permeability as the material paper winding around a filter section containing no black absorbents and as a shape-forming paper winding around all of the filter sections, and further setting opening positions of ventilation holes of a tipping paper wrapping around the filter portion and the tobacco portion within a range of the filter section containing no black absorbents.
- Also according to the embodiment, since a general-purpose tipping paper having appropriate rigidity and thickness and also having a good roll-up characteristic can be used, there is no need to add a large amount of fillers to the tipping paper or to make the tipping paper thicker and, therefore an excellent cigarette in which streaks of wrinkles are hardly visible can be obtained.
- As the plurality of filter sections used in the embodiment, there is, for example two-sections type (dual type) or three-sections type (triple type).
- The filter section can be formed from, for example, a tow of cellulose acetate fibers. The tow of cellulose acetate fibers can be bound by treating it with triacetin.
- For example, activated carbons can be used as the black absorbents dispersed in the filter section. It is preferable that 25 mg or more, more preferably 50 mg or more, of the black absorbents are dispersed for a length (10 mm) of the filter section.
- The material paper wound around the filter section containing the black absorbents has opacity of 78% or more. Such a material paper preferably has a composition of, for example, pulp and fillers such as calcium carbonate, titanium oxide, etc. The more preferable opacity of the material paper is 85% or more. If opacity of the material paper is increased excessively, it becomes difficult to make the material paper. Therefore, it is preferable to set the upper limit of opacity to 95%.
- The material paper wound around the filter section containing the black absorbents preferably has a thickness of 30µm to 100µm.
- Opacity can be measured by a measuring method of an example described later.
- As the material paper wound around the filter section containing no black absorbents is a conventional product. For example, the material paper whose opacity is 20% to 40% can be used. The conventional material paper preferably has a thickness of 30µm to 100µm.
- The shape-forming paper wound around the filter sections around each of which the material paper is wound and which are arranged to be integrated with each other is a conventional product. For example, the shape-forming paper having opacity of 20% to 40% can be used. The shape-forming paper preferably has a thickness of 30µm to 100µm.
- The tipping paper is a conventional product. For example, the tipping paper having opacity of 78% to 85% can be used. The tipping paper preferably has a thickness of 30µm to 100µm.
- Next, the cigarette according to the embodiment will be described more concretely with reference to drawings.
-
FIG. 2 shows a cigarette having a dual type filter portion according to the embodiment.FIG. 2(a) is a front perspective view,FIG. 2(b) is a sectional view along a line b-b inFIG. 2(a) and FIG. 2(c) is a sectional view along a line c-c inFIG. 2(a) . - The cigarette having the dual type filter portion includes a
tobacco portion 1 and afilter portion 2. - The
tobacco portion 1 is formed by rolling acigarette paper 12 around cuttobaccos 11 in a cylindrical shape. - As shown in
FIGS. 2(b) and 2(c) , thefilter portion 2 includes afirst filter section 21a arranged in a side of thetobacco portion 1 and asecond filter section 21b adjacent to thefirst filter section 21a. - As shown in
FIG. 2(b) , thefirst filter section 21a is shaped by winding afirst material paper 23a around a tow of acetate fibers or folded nonwoven fabrics of pulp, in which black absorbents, for example activatedcarbons 22, are dispersed, to form a cylindrical shape. As described above, thefirst material paper 23a has opacity of 78% or more and the thickness of, for example, 30µm to 100µm. - As shown in
FIG. 2(c) , thesecond filter section 21b is shaped by winding asecond material paper 23b around a tow of acetate fibers or folded nonwoven fabrics of pulp to form a cylindrical shape. That is, thesecond filter section 21b contains no black absorbents. Thesecond material paper 23a is a conventional material paper having, for example, opacity of 20% to 40% and a thickness of 30µm to 100µm. - These two
filter sections material papers paper 24. The shape-formingpaper 24 is a conventional shape-forming paper having, for example, opacity of 20% to 40% and a thickness of 30µm to 100µm. - The
tobacco portion 1 and thefilter portion 2 are integrated by placing their ends to be opposite to each other and by wrapping the whole of an outer circumferential surface of thefilter portion 2 and a part of an outer circumferential surface of thetobacco portion 1 near the opposed ends with atipping paper 3. The tippingpaper 3 has ventilation holes 31 opened in advance in a part of the tippingpaper 3 corresponding to thesecond filter section 21b containing no black absorbents and positioned in a free end side of thefilter portion 2, the part extending in a circumferential direction of the filter portion. The tippingpaper 3 is a conventional tipping paper having, for example, opacity of 78% to 85% and a thickness of 30µm to 100µm. -
FIG. 3 shows a cigarette having a triple type filter portion according to the embodiment.FIG. 3(a) is a front perspective view,FIG. 3(b) is a sectional view along a line b-b inFIG. 3(a), FIG. 3(c) is a sectional view along a line c-c inFIG. 3(a) and FIG. 3(d) is a sectional view along d-d line inFIG. 3A . InFIG. 3 , the same reference numerals indicate members similar to those inFIG. 2 and descriptions thereof are omitted. - As shown in
FIGS. 3(b), 3(c) and 3(d) , the cigarette having the triple type filter portion includes afilter portion 2 having afirst filter section 201a, asecond filter section 201b and athird filter section 201c. The first tothird filter sections 201a to 201c are arranged in this order from atobacco portion 1. - As shown in
FIGS. 3(b) and 3(d) , each of the first andthird filter sections third material paper third filter sections third material papers - As shown in
FIG. 3(c) , thesecond filter section 201b arranged between the first andthird filter sections second material paper 203b around a tow of acetate fibers or folded nonwoven fabrics of pulp, in which black absorbents, for example, activatedcarbons 202, are dispersed, to form a cylindrical shape. As described above, thesecond material paper 203b has opacity of 78% or more and a thickness of, for example, 30µm to 100µm. - These three
filter sections 201a to 201c wound by the first tothird material papers 203a to 203c respectively have their ends placed opposite to each other and are integrated with each other by wrapping a shape-formingpaper 204 thereon. The shape-formingpaper 204 is a conventional shape-forming paper having, for example, opacity of 20% to 40% and a thickness of 30µm to 100µm. - In a part of the tipping
paper 3 wrapping a part of thetobacco portion 1 and the whole of thefilter portion 2 and integrating them with each other, the part corresponding to thethird filter section 201c containing no black absorbents and positioning in a free end of the filter portion, ventilation holes 31 are opened in advance to be arranged along a circumferential direction of the part. The tippingpaper 3 is a conventional tipping paper having, for example, opacity of 78% to 85% and a thickness of 30µm to 100µm. Incidentally, the ventilation holes may be opened in advance in another part of the tippingpaper 3 to be arranged in a circumferential direction of the other part, the other part corresponding to thefirst filter section 201a positioned in a side of thetobacco portion 1. Alternatively, the ventilation holes may be opened in advance in each of both of the parts (two locations) of the tippingpaper 3 to be arranged in the circumferential direction of each of both of the parts, these parts corresponding to both of the first andthird filter sections - Examples of the present invention will be described in detail below.
- A first filter section (charcoal section) is formed by dispersing coconut shell activated carbons of the center grain size of 50 meshes in acetate fibers of 3 denier and then by rolling the acetate fibers with a first material paper to have a circumferential length of 24.5 mm. An amount of dispersed activated carbons is set to 50 mg for a length of 10 mm of the filter section.
- In addition, a second filter section without coconut shell activated carbons dispersed therein is formed by rolling acetate fibers of 3 denier with a second material paper to have a circumferential length of 24.5 mm.
- The first and second filter sections wound by such material papers are placed opposite to each other at their ends and then integrally wound by the shape-forming paper, so that the filter portion of the dual type shown in
FIG. 2 is formed. - The formed filter portion and a tobacco portion formed by rolling cut tobaccos with a cigarette paper to a cylindrical shape are placed opposite to each other at their ends, and then the whole of an outer circumferential surface of the filter portion and a part of an outer circumferential surface of the tobacco portion near to the opposed end are wrapped by a tipping paper to make them being integrated, so that the cigarette shown in
FIG. 2 is formed. Ventilation holes are opened in advance in a part of the tipping paper corresponding to the second filter section containing no black absorbents and positioned in a free end side of the filter portion cigarette holder side, the ventilation holes being arranged along a circumferential direction of the filter portion. - The obtained cigarette has a total length of 55 mm, in which a length of the tobacco portion is 30 mm and a length of the filter portion is 25 mm (the first filter section (charcoal filter section): 10 mm, the second filter section: 15 mm).
- In the cigarettes of Comparative Examples 1 and 2, first and second material papers, a shape-forming paper and a tipping paper individually having a basis weight, a thickness, a composition and opacity shown in Table 1 below are used.
- Paper quality is measured as described below.
- Before testing these papers, these papers are conditioned for 24 hours or more under a conditioning environment at 22°C and 50% humidity.
- Their opacities are measured based on JIS P 8148-1993 by an "ISO white-opacity measuring apparatus WMS-1" manufactured by MURAKAMI COLOR RESEARCH LABORATORY.
- Their thicknesses are measured based on JIS P 8118 by "DIGI-THICKNESS TESTER" manufactured by Toyo Seiki Seisakusho.
- Measurement results are rounded off to the nearest integers.
[Table 1] Tipping paper First material paper Second material paper Shape-forming paper Comparative Example 1 Basis weight (gsm) 33 27 27 27 Thickness (µm) 41 65 65 65 Composition (wt%) Wood pulp 86 70 70 70 Rayon 0 30 30 30 CaCO 32 0 0 0 TiO 212 0 0 0 Opacity 78 40 40 40 Tipping paper First material paper Second material paper Shape-forming paper Comparative Example 2 Basis weight (gsm) 40 27 27 27 Thickness ( µm) 41 65 65 65 Composition (wt%) Wood pulp 76 70 70 70 Rayon 0 30 30 30 CaCO 312 0 0 0 TiO 212 0 0 0 Opacity 85 40 40 40 - Cigarettes having structures similar to those of Comparative Examples 1 and 2, except that papers having basis weights, thicknesses, compositions and opacities shown in Table 2 below are used for the first and second material papers, the shape-forming paper and the tipping paper, are formed. The thickness and opacity of each paper are measured similarly to those of Comparative Examples 1 and 2.
[Table 2] Tipping paper First material paper Second material paper Shape-forming paper Example 1 Basis weight (gsm) 33 33 27 27 Thickness (µm) 41 41 65 65 Composition (wt%) Wood pulp 86 86 70 70 Rayon 0 0 30 30 CaCO 32 2 0 0 TiO 212 12 0 0 Opacity 78 78 40 40 Tipping paper First material paper Second material paper Shape-forming paper Example 2 Basis weight (gsm) 33 40 27 27 Thickness (µm) 41 41 65 65 Composition (wt%) Wood pulp 86 76 70 70 Rayon 0 0 30 30 CaCO 32 12 0 0 TiO 212 12 0 0 Opacity 78 85 40 40 - Cigarettes having structures similar to those of Comparative Examples 1 and 2, except that papers having basis weights, thicknesses, compositions and opacities shown in Table 3 below are used for the first and second material papers, the shape-forming paper and the tipping paper, are formed. The thickness and opacity of each paper are measured similarly to those of Comparative Examples 1 and 2.
[Table 3] Tipping paper First material paper Second material paper Shape-forming paper Example 3 Basis weight (gsm) 40 33 27 27 Thickness (µm) 41 41 65 65 Composition (wt%) Wood pulp 76 86 70 70 Rayon 0 0 30 30 CaCO 312 2 0 0 TiO 212 12 0 0 Opacity 85 78 40 40 Tipping paper First material paper Second material paper Shape-forming paper Example 4 Basis weight (gsm) 40 40 27 27 Thickness (µm) 41 41 65 65 Composition (wt%) Wood pulp 76 76 70 70 Rayon 0 0 30 30 CaCO 312 12 0 0 TiO 212 12 0 0 Opacity 85 85 40 40 - For each of the cigarettes obtained in Comparative Examples 1 and 2 and Examples 1 to 4, opacity when the first material paper, the shape-forming paper and the tipping paper are layered up and opacity when the second material paper, the shape-forming paper and the tipping paper are layered up are measured similarly to those of the Comparative Examples 1 and 2.
- Also, for each of the cigarettes obtained in Comparative Examples 1 and 2 and Examples 1 to 4, a degree which indicates how activated carbons can be seen through a part of each cigarette corresponding to a charcoal filter section is evaluated by the following sensory test.
- That is, 16 panelists with normal eyesight visually evaluate each cigarette in a room illuminated in illumination of about 600 lux by common fluorescent lamps.
- The evaluation is indicated by one of 5 degrees, in which how an appearance of the filter portion originating from activated carbons in the charcoal filter section can be seen from gray to black. In the visual sensory test by 16 panelists, apparently different visual sensory values from those of other panelists are canceled.
-
- 1: Activated carbons are not able to be seen through.
- 2: Activated carbons can be dimly seen through.
- 3: Activated carbons can be rather seen through.
- 4: Activated carbons can be clearly seen through.
- 5: Activated carbons can be considerably seen through.
- The opacities shown above and the visual sensory values are shown in Table 4 below.
[Table 4] Opacity of tipping paper Opacity of first material paper Opacity of second material paper Opacity of shape-forming paper Opacity *1 when these papers being layered Visual Sensory value Comparative Example 1 78 40 40 40 86 4 86 Comparative Example 2 85 40 40 40 89 4 89 Example 1 78 78 40 40 92 2 86 Example 2 78 85 40 40 93 2 86 Example 3 85 78 40 40 93 2 89 Example 4 85 85 40 40 94 2 89 - Note) The upper part of Opacity *1 shows opacity when the first material paper, the shape-forming paper and the tipping paper are layered up, and the lower part thereof shows opacity when the second material paper, the shape-forming paper and the tipping paper are layered up.
- As apparent from Table 4, in each of Comparative Example 1 using the tipping paper which has the lower limit of opacity (78%) and Comparative Example 2 using the tipping paper which has higher opacity (85%), outward opacity obtained by layering the first material paper, the shape-forming paper and the tipping paper in the filter portion (first filter section in which activated carbons are dispersed) is lower than 92% expected as outward opacity. And, the visual sensory value in each of these Comparative Examples is "4" (Activated carbons can be clearly seen through) which is not preferable for a quality of visual appearance.
- In the Comparative Examples 1 and 2, the second filter section containing no activated carbons is wound by the second material paper having air permeability of 10000 CU and the shape-forming paper. And, even after winding a tipping paper around the second filter section, a sufficient ventilation effect can be achieved at a part of the tipping paper corresponding to the second filter section because ventilation holes are opened in advance in the part of the tipping paper.
- In the Examples 1 to 3, since the first material paper having opacity of 78% to 85% is used to wind around the first filter section in which activated carbons are dispersed and the tipping paper having opacity (78%) of the lower limit is used, outward opacity obtained by overlaying the first material paper, the shape-forming paper and the tipping paper on the first filter section in which activated carbons are dispersed exceeds 92% expected as outward opacity. As a result of this, a visual sensory value of "2"(Activated carbons can be dimly seen through) can be obtained to provide a white clean impression meaning a good quality on a visual appearance.
- In the Example 4, since the first material paper having opacity of 85% is used to wind around the first filter section in which activated carbons are dispersed and the tipping paper having high opacity (85%) is used, outward opacity obtained by overlaying the first material paper, the shape-forming paper and the tipping paper on the first filter section in which activated carbons are dispersed exceeds 94% expected as outward opacity to provide a more white clean impression.
- In the Examples 1 to 4, the second filter section containing no activated carbons is wound by the second material paper having air permeability of 10000 CU and the shape-forming paper. And, even after winding a tipping paper around the second filter section, a sufficient ventilation effect can be achieved at a part of the tipping paper corresponding to the second filter section because ventilation holes are opened in advance in the part of the tipping paper.
Claims (5)
- A cigarette comprising:a filter portion (2) including a plurality of filter sections (21a, 21b; 201a, 201b, 201c) arranged to be integrated with each other, a material paper (23a, 23b; 203a, 203b, 203c) winding around each of the filter sections (21a, 21b; 201a, 201b, 201c), and a shape-forming paper (24; 204) winding around the integrated filter sections (21a, 21b; 201a, 201b, 201c) around each of which the material paper (23a, 23b; 203a, 203b, 203c) is wound;a tobacco portion (1) in which tobacco material (11) is rolled by a cigarette paper (12); anda tipping paper (3) wound around the entire filter portion (2) and a base end part of the tobacco portion (1) after placing the filter portion (2) and the tobacco portion (1) opposite to each other at their ends, so that the filter portion (2) and the tobacco portion (1) are integrally connected with each other,wherein at least one (21a; 201b) of the filter sections contains black absorbents (22; 202) dispersed therein, wherein the tipping paper (3) has ventilation holes (31) opened in advance in its part positioned on the filter section (21b; 201c) containing no black absorbents, characterized in that the material paper (23a; 203b) winding around the filter section (21a; 201b) containing the black absorbents (22; 202) has an opacity of 78% or more.
- The cigarette according to claim 1, wherein the black absorbents (22; 202) are activated carbons.
- The cigarette according to claim 1, wherein 25 mg or more per 10 mm filter length of the black absorbents (22; 202) is dispersed in the filter section (21a; 201b).
- The cigarette according to claim 1, wherein 50 mg or more per 10 mm filter length of the black absorbents (22; 202) is dispersed in the filter section (21a; 201b).
- The cigarette according to claim 1, wherein the tipping paper (3) has an opacity of 78% to 85% and a thickness of 30 µm to 100 µm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2012/053984 WO2013124954A1 (en) | 2012-02-20 | 2012-02-20 | Cigarette |
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EP2818060A4 EP2818060A4 (en) | 2015-11-11 |
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JP (1) | JP5699244B2 (en) |
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GB201315492D0 (en) * | 2013-08-30 | 2013-10-16 | British American Tobacco Co | Smoking Article |
CN111526741B (en) | 2017-12-26 | 2022-06-03 | 日本烟草产业株式会社 | Composite filter segment, smoking article with composite filter segment, and inspection method for composite filter segment |
PL3880010T3 (en) * | 2019-11-29 | 2023-09-04 | Essentra Filter Products Development Co Pte. Ltd. | Tobacco smoke filter |
CN111436649A (en) * | 2020-03-13 | 2020-07-24 | 南通烟滤嘴有限责任公司 | Automatic adjusting mechanism for filter stick perimeter |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE500634C2 (en) * | 1992-12-22 | 1994-08-01 | House Of Blend Ab | fILTER TIP |
JP2875184B2 (en) | 1995-03-08 | 1999-03-24 | 三島製紙株式会社 | Chip base paper, chip paper and tobacco using it |
US5830318A (en) * | 1996-10-25 | 1998-11-03 | Schweitzer-Mauduit International, Inc. | High opacity tipping paper |
US5893372A (en) | 1997-04-07 | 1999-04-13 | Schweitzer Maudit International, Inc. | High opacity wrapping paper |
US6823872B2 (en) * | 1997-04-07 | 2004-11-30 | Schweitzer-Mauduit International, Inc. | Smoking article with reduced carbon monoxide delivery |
PT1377184E (en) * | 2001-02-22 | 2010-06-28 | Philip Morris Prod | Cigarette and filter with downstream flavor addition |
GB0209690D0 (en) * | 2002-04-27 | 2002-06-05 | British American Tobacco Co | Improvements relating to smoking articles and smokable filler materials therefor |
KR20040070612A (en) * | 2003-02-04 | 2004-08-11 | 이형 | Extraction And Transparent Filter Cigarette |
SI1827145T1 (en) * | 2004-11-10 | 2010-10-29 | Philip Morris Prod | Capsuled adsorbent flavored filter |
JP5393032B2 (en) * | 2005-02-04 | 2014-01-22 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Filter with added cigarette and cellulose flavors |
US7789089B2 (en) * | 2006-08-04 | 2010-09-07 | R. J. Reynolds Tobacco Company | Filtered cigarette possessing tipping material |
MY150067A (en) * | 2007-12-14 | 2013-11-29 | Japan Tobacco Inc | Cigarette filter and filter-tipped cigarette |
-
2012
- 2012-02-20 EP EP12868950.2A patent/EP2818060B1/en active Active
- 2012-02-20 WO PCT/JP2012/053984 patent/WO2013124954A1/en active Application Filing
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RU2577736C1 (en) | 2016-03-20 |
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JP5699244B2 (en) | 2015-04-08 |
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WO2013124954A1 (en) | 2013-08-29 |
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