TWI710324B - Smoking article with filter - Google Patents

Abstract

Provided is a smoking article with filter including an aerosol generating member, a filter having a filter material and one or plural filter wrappers winding around an outer periphery of the filter material, and an outer wrapper winding around an end of the aerosol generating member and an outer periphery of the filter, wherein an arithmetic averaged roughness of the outer periphery of the outer wrapper is less than 2.0μm, and the filter which has been wound by the outer wrapper has a compression recovery of 60% or more after a compression load of 2.5N is subjected in a diameter direction with respect to a range having a length of 10mm.

Description

Smoking items with filter

The invention relates to a smoking article with a filter.

Filter-attached smoking articles, such as filter-attached cigarettes, connect the tobacco rod and the filter, and use the outer wrapper to wrap the outer peripheral surface of the filter and the outer peripheral surface of the tobacco rod near the butting part to make it integrated .

Among the smoking articles with a filter, the filter wrapped with an outer wrapping paper functions as a mouthpiece that the user holds in the mouth when smoking. The physical characteristics of the mouthpiece give the user various feelings when smoking, and therefore affect the user's impression of the smoking article with filter.

Patent Document 1 discloses a smoking article filter with a hardness higher than a fixed degree at the mouth side, so that the user can bite the mouth side end of the smoking article filter during a smoking experience to have fun.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2016-523565 Publication

However, Patent Document 1 focuses on the user's act of biting the filter for enjoyment, and does not evaluate the sensation (hold feeling) of the user when the user holds the mouthpiece with his lips while smoking.

The subject of the present invention is to provide a filter-attached smoking article with a good feeling (hold feeling) when the user holds the mouth with his lips during smoking.

According to the present invention, there can be provided a smoking article with a filter, which is characterized by comprising: an aerosol generating member; a filter with a filter material and one or more pieces of filter paper wound on the outer peripheral surface of the filter material; and The outer wrapper wrapped around the end of the smoke generating member and the outer peripheral surface of the aforementioned filter. The arithmetic average roughness of the outer peripheral surface of the outer wrapper is less than 2.0μm, which is one of the filters wrapped by the outer wrapper. For a range with a length of 10 mm, the compression recovery after a compression load of 2.5 N is applied in the radial direction is 60% or more.

According to the present invention, it is possible to provide a smoking article with a filter which has a good feeling (hold feeling) when the user holds the mouth part with his lips.

1. Smoking article with filter in the first embodiment

2. Smoking articles with filters in the third embodiment

11‧‧‧Smoke generating component (smoke rod)

12, 22‧‧‧Filter

13, 23‧‧‧Outside wrapping paper

22a‧‧‧The first filter tip assembly

22b‧‧‧Second filter assembly

22c‧‧‧Outside filter tip roll paper

111‧‧‧Tobacco

112‧‧‧Cigarette Paper

121‧‧‧Filter material

221a‧‧‧The first filter

221b‧‧‧Second filter material

222a‧‧‧The first inner filter tip roll paper

222b‧‧‧The second inner filter tip roll paper

Figure 1 is a schematic diagram showing a curve of compression deformation-compression restoring force used to calculate compression recovery.

Figure 2 is a schematic diagram illustrating the definition of hardness.

Figure 3 is a schematic cross-sectional view of the smoking article with filter according to the first embodiment.

Fig. 4 is a schematic cross-sectional view of the smoking article with filter according to the third embodiment.

Figure 5 is a schematic diagram of a method for measuring compression recovery.

Hereinafter, the smoking article with filter of the present invention will be described in detail.

The smoking article with a filter of the present invention is provided with: a smoke generating member; a filter provided with a filter material and one or more filter paper wrappers on the outer peripheral surface of the filter material; and the end of the smoke generating member and the filter Outer wrapping paper rolled up on the outer peripheral surface. The arithmetic average roughness of the outer peripheral surface of the outer wrapping paper is less than 2.0μm, and the compression recovery of the filter wrapped in the outer wrapping paper for a range of 10mm in length and a compression load of 2.5N in the radial direction is 60 %the above.

Among the smoking articles with filters, the filter wrapped in an outer wrapper is the mouthpiece held in the mouth when the user smokes. In addition, the outer peripheral surface of the outer wrapper is the outer peripheral surface of the mouthpiece that the user's lips touch when smoking. The inventors have found that according to the smoking article with filter of the present invention, the user feels particularly good when the user holds the mouth with his lips (hold feeling) during smoking.

In addition, in order to further improve the gripping feeling of the smoking article with filter, the inventors found that the arithmetic average roughness of the outer peripheral surface of the outer wrapper is preferably 1.5 μm or less, more preferably 1.0 μm or less.

Furthermore, in order to further enhance the sense of holding of the smoking article with filter, the inventors have found that the length of the filter wrapped in the outer wrapper is 10mm, and a compression load of 2.5N is applied in the radial direction. The compression recovery is preferably 60% or more and less than 80%, and more preferably 60% or more and less than 70%.

The lower the arithmetic average roughness of the outer peripheral surface of the outer wrapper, the smoother the touch is given to the user's lips when the user holds the mouthpiece with his lips during smoking. If the compression recovery of the mouthpiece is appropriate, when the user holds the mouthpiece with his lips while smoking, it will give the user's lips ideal pressure. If the compression recovery is high, after the user holds the mouthpiece with his lips and compresses it during smoking, the shape of the mouthpiece can be restored to the state before compression, which is preferable. On the other hand, even if the compression recovery of the mouthpiece is appropriate, if the arithmetic average roughness of the outer wrapper is high, it will give the user's lips a rough tactile feel, and therefore the holding feeling is not ideal.

In addition, in order to further enhance the holding feeling of the smoking article with filter, the inventors found that the bending recovery angle of the outer wrapping paper or one or more filter paper rolls is preferably 60 degrees or more, more preferably 100 It is more preferably 100 degrees or more and 120 degrees or less. If the bending recovery angle of the outer wrapper or one or more pieces of filter roll paper is large, when the user uses his lips to hold the mouthpiece while smoking, the user’s lips will feel the hardness and make it feel held Feel good. Generally speaking, the bending recovery angle of the outer wrapping paper or one or more pieces of filter roll paper is large, and the compression recovery of the filter wrapped with the outer wrapping paper is improved.

In addition, in order to improve the holding feeling of smoking articles with filters, the inventors found that the hardness of the filter wrapped in outer wrapping paper is preferably less than 90%, more preferably 80% or more, less than full. 90%, more preferably over 85% but less than 90%. The holding feeling of smoking articles with filters is known to be that the hardness of the mouthpiece should not be too hard.

Hereinafter, the definitions of the aforementioned terms "arithmetic mean roughness", "compression recovery", "bending recovery angle", and "hardness" are explained.

<Arithmetic mean roughness>

The term "arithmetic average roughness" in this specification means the arithmetic average roughness (Ra) measured using a surface roughness meter under the measurement conditions based on ISO1997.

<Compression and recovery>

The term "compression resilience" in this manual indicates resilience relative to compression. Compression recovery can be achieved by using a cylindrical plunger with a diameter of 10mm to compress a filter tip wrapped in an outer wrapper, that is, a test sample, for a range of 10mm in length to a compression load of 2.5N, then stop the compression operation , And then calculate the compression deformation-compression restoring force curve obtained when the shape of the test sample is restored. The compression deformation-compression restoring force curve can be measured using, for example, an ammeter. The first figure shows the compression restoring force when the test sample is compressed in the radial direction at a set speed (curve AB) until the compression load is 2.5N, and the compression operation is stopped, and the compression restoring force when the shape is restored to 0N from the restoring force of the test sample [N] (Curve BC) vs. Compression Deformation [mm] A schematic diagram of the compression deformation-compression restoring force curve obtained after drawing.

In the compression deformation-compression restoring force curve, the workload during compression (curve A-B) (area of area ABD) and the workload during recovery (curve B-C) (area of area CBD) are respectively calculated. Compression recovery [%] can be calculated by the following formula.

Compression recovery [%]=(area of regional CBD)/(area of regional ABD)×100[%]

The reason for setting the compression load to 2.5N is that the average value of the force when the user holds the mouthpiece with his lips during smoking is a compression load of 2.5N with respect to a range of 10mm in length. Compression recovery is a value where the compression deformation (T _C mm) of the test sample after the compression operation is stopped is closer to the compression deformation before compression (0 mm). In addition, the compression recovery property is a value that the compression restoring force [N] at the time of pressurization (curve AB) and recovery after the compression operation is stopped (curve BC) is closer to the amount of compression deformation, the higher.

〈Bending recovery angle〉

The term "bending recovery angle" in this specification indicates the resilience of the sheet material back to its original flat shape. The bending recovery angle refers to the bending angle of the sheet after a certain sheet is bent to 180 degrees under a certain pressure and left to stand for 30 seconds.

<Hardness>

The term "hardness" in this specification means resistance to compression. The hardness can be determined by applying a load of 2 kg for 20 seconds to 10 filters wrapped in outer wrapping paper, and measuring the average diameter of the recesses of the filters wrapped in outer wrapping paper. Figure 2 shows the filter 101 wrapped in outer wrapping paper before a load is applied, and the filter 102 wrapped in outer wrapping paper when a load is applied. The hardness can be calculated from the diameter Ds before the load F is applied and the diameter Dd of the recess when the load F is being applied by the following equation.

Hardness (%)=Dd/Ds×100(%)

This test can be performed using a DD60A Densmeter device manufactured by Borgward. This test is called the DD60A test and can be carried out according to the standard test method used by the machine. The test can be carried out at an ambient temperature of 22 ± 2 degrees Celsius.

Hereinafter, several embodiments will be described with reference to the drawings. Through the embodiment, the same symbols are attached to the common elements, and repeated descriptions are omitted. In addition, each drawing is a schematic diagram for easy understanding of the embodiment, and its shape, size, ratio, etc. have several differences from the actual ones. In this manual, the terms "upstream" and "downstream" are used appropriately, but these are based on the flow direction of smoke when smoking a smoking article with a filter.

(First Embodiment)

Fig. 3 is a schematic cross-sectional view showing an enlarged part of the smoking article with filter 1 of the first embodiment. In the following description, the cigarette with a filter is described as an example of the smoking article 1 with a filter, but it is not limited to this. Smoking article with filter 1 is another smoking article with a filter attached. For example, it may be a cigar, a cigarillo, a non-combustion smoking implement using electric heating/chemical reaction heat, a non-heating smoking implement, etc.

The smoking article 1 with a filter includes: a smoke generating member 11, a filter 12, and an outer wrapper 13. The smoke generating member 11 is, for example, a cigarette rod 11. The tobacco rod 11 is provided with a shredded tobacco 111 and a cigarette paper 112 that wraps around the shredded tobacco 111 in the same way as a general cigarette. The cigarette paper 112 is, for example, paper having air permeability.

The filter 12 is arranged at the downstream end of the tobacco rod 11. The filter 12 has the same or substantially the same diameter as the tobacco rod 11. The filter 12 is composed of a filter medium 121 and a filter roll paper 122 wound around the filter medium 121. The filter 12 has a general filter structure composed of a single filter material.

The outer wrapping paper 13 is wrapped around the downstream end of the cigarette rod 11 and the outer peripheral surface of the filter 12, and connects the cigarette rod 11 and the filter 12. The outer wrapping paper 13 uses the general adhesive used in the manufacture of smoking articles with filters to bond the tobacco rod 11 and the filter 12 together.

The compression recovery of the filter 12 wrapped with the outer wrapping paper 13 after applying a compression load of 2.5N is 60% or more, preferably 60% or more, less than 80%, more preferably 60% or less, less than 70%. The compression recovery of the filter 12 wrapped with the outer wrapping paper 13 can be comprehensively determined by the materials, thickness and basis weight of the outer wrapping paper 13 and the filter roll 122, and the material of the filter material 121. The compression recovery of the suction mouth portion formed by the filter 12 wound with the outer wrapping paper 13 is preferably obtained from the physical properties of the outer wrapping paper 13.

(a) Outer wrapping paper (13)

The arithmetic average roughness of the outer peripheral surface of the outer wrapping paper 13 when it is wound on the filter is less than 2.0 m, preferably 1.5 m or less, and more preferably 1.0 m or less. The bending recovery angle of the outer wrapping paper 13 is preferably 60 degrees or more, more preferably 100 degrees or more, and particularly preferably 100 degrees or more and 120 degrees or less.

The outer wrapping paper 13 is not particularly limited as long as it is configured to satisfy the aforementioned arithmetic average roughness, compression recovery, and preferably a bending recovery angle. The outer wrapping paper 13 is composed of, for example, a sheet including a plurality of layers. A sheet containing a plurality of layers includes, for example, a base layer and a surface layer provided on one side or both sides of the base layer.

The base material layer is not particularly limited, but a material with a higher bending recovery angle is preferable, such as a resin film. The resin film is preferably a thermoplastic resin film, such as polyethylene resin, polyolefin resin such as polypropylene, polyamine resin such as nylon-6, and polyester resin such as polyethylene terephthalate. , Polybutene-based resin, film containing polycarbonate or polyphenylene sulfide or a mixture of these. The base material layer is preferably a film of polyolefin resin such as polyethylene resin and polypropylene, or polyester resin, and more preferably a film mainly composed of polyester or polyolefin. In order to increase rigidity and strength, and increase the bending recovery angle, the base layer is preferably a biaxially stretched film. The base material layer may also contain inorganic or organic fillers such as calcium carbonate, calcined clay, alumina, and titanium dioxide. The substrate layer may have a single-layer structure or a multilayer structure.

The surface layer is not particularly limited as long as the outer peripheral surface of the outer packaging paper 13 is formed with an arithmetic average roughness of 2.0 μm or less. For example, it may be a coating layer containing an inorganic filler, a paper layer made of resin, or a cellulose-containing layer. Coated layer of nanofiber.

The coating layer containing the inorganic filler is, for example, the same white pigment coating layer as the surface layer of general coated paper. The coating layer containing an inorganic filler may contain, for example, an aqueous resin binder, an inorganic filler, an aqueous polymer, and a colorant. Inorganic fillers include calcium carbonate, satin white, silicon dioxide, titanium oxide, aluminum oxide, zinc oxide, iron oxide, clay, aluminum sulfate, etc., but especially fillers such as calcium carbonate and titanium oxide , Zinc oxide, iron oxide and other pigments are preferred. In order to reduce the arithmetic average roughness of the surface layer, the particle size of the inorganic filler is preferably 15 μm or less. By having a surface layer containing an inorganic filler, effects such as improved printability, improved pencil writing, improved whiteness, coloring, imparting opacity, and improved surface smoothness can be obtained.

The paper-like layer made of resin is, for example, a resin film having a large number of micropores by extending and oriented only in a uniaxial direction. The paper-like layer made of resin may contain the above-mentioned inorganic filler. The paper-like layer made of resin penetrates the plurality of micropores, and can obtain effects such as improvement of printability, improvement of pencil writing, improvement of whiteness, coloring, imparting opacity, and improvement of surface smoothness.

The coating layer containing cellulose nanofibers is, for example, a coating layer containing cellulose nanofibers having an average fiber length of less than 50 nm and an average fiber length of 10 μm or more. The coating layer containing cellulose nanocellulose can adjust the coating liquid by dispersing the cellulose nanofibers in a suitable solvent (such as water or alcohol), and apply the coating liquid on the substrate layer, and then let it dry To make.

If the outer wrapping paper 13 has a surface layer, when the user holds the mouthpiece with his lips while smoking, even if the base layer is a resin film, it does not have a plastic-like touch, which is ideal. In addition, the outer wrapping paper 13 generally prints trademarks, patterns, etc. in order to improve design, so it is preferable to have a printable surface layer.

The outer wrapping paper 13 is preferably a synthetic paper having a base layer of a resin film and a coating layer containing an inorganic filler or a surface layer of a paper-like layer made of resin. Generally, synthetic paper with a coating layer containing an inorganic filler is called a synthetic paper of the surface coating method, such as PEACHCOAT ^® (WER-135DS, WEFY-120, or SEY-130FPP) (Nisshinbo Paper Co., Ltd.). Generally, synthetic paper with a paper-like layer composed of a resin film is called internal paper-forming synthetic paper, such as YUPO TRACE ^® (TPRA), New YUPO (trade name), ULTRA YUPO ^® (FEB) (Yupo Corporation) Corporation) and so on.

In order to obtain compression recovery properties suitable for the mouthpiece, the basis weight of the outer wrapping paper 13 is preferably 50 g/m ² or more and less than 200 g/m ² , and more preferably 100 g/m ² or more and less than 200 g/m ² . If the base of the outer wrapping paper 13 is large, the bending recovery angle of the outer wrapping paper 13 will generally increase, so it is ideal.

In order to obtain compression recovery properties suitable for the mouthpiece, the thickness of the outer packaging paper 13 is preferably 50 μm or more and less than 150 μm, and more preferably 100 μm or more and less than 150 μm. If the outer wrapping paper 13 is thicker, the bending recovery angle will generally increase, so it is ideal.

(b) Filter material (121)

The filter material 121 may be composed of a general filter material 121, such as cellulose acetate fiber. The physical properties of the filter material 121 will affect the compression recovery of the suction port.

The filter material 121 can also be added with a plasticizer. The plasticizer is not particularly limited as long as it is a plasticizer that can plasticize the cellulose acetate fiber. For example, it may be glycerol acetate. If a plasticizer is added to the cellulose acetate fiber, the cellulose acetate fiber will partially melt and the fibers will be joined to each other. As a result, by adding a plasticizer to the cellulose acetate fiber, the compression recovery of the filter material 121 is increased. The more the plasticizer is added, the more the compression recovery of the filter material 121 increases. Therefore, by adjusting the amount of plasticizer added, the compression recovery of the filter material 121 can be adjusted. The amount of plasticizer added can also be appropriately selected according to the required compression recovery of the mouthpiece. The amount of the plasticizer blended with the cellulose acetate fiber in the filter material 121 is preferably 0% to 20% by weight relative to the cellulose acetate fiber. In addition, an adhesive may be added to the filter material 121. If an adhesive is added, an effect similar to that when a plasticizer is added can be obtained, and the compression recovery of the filter material 121 will increase. Therefore, by adjusting the addition amount of the adhesive, the compression recovery of the filter material 121 can be adjusted. In addition, the filter material 121 may further contain an adsorbing material such as activated carbon or a fragrance emitting material such as a fragrance capsule.

(c) Filter tip roll paper (122)

The filter wrapper 122 may be composed of, for example, the filter wrapper 122 used in the smoking article 1 with a filter, for example, a fiber-based material, paper, cardboard, RECON, a fiber-based film, or a combination of these. The filter roll paper 122 may be a single layer, or a structure in which a plurality of sheets are bonded by an adhesive or the like. The physical properties of the filter roll paper 122 will affect the compression recovery of the mouthpiece. If the basis weight and thickness of the filter roll paper 122 increase, the compression recovery and hardness of the mouthpiece will generally increase. However, when the filter roll paper 122 is composed of a general-purpose filter roll paper, that is, paper having a thickness of 50 μm and a basis weight of 27 g/m ² , it has less influence on the compression recovery.

According to the smoking article 1 with a filter of the first embodiment, since the arithmetic mean roughness of the outer peripheral surface of the outer wrapper 13 and the compression recovery of the mouthpiece portion are satisfied at the same time, the user can maintain the mouthpiece portion with his lips while smoking. The feeling of time (holding feeling) is good.

In addition, the first embodiment shows and describes an example in which a filter wrapped in an outer wrapper, that is, the entire mouthpiece satisfies the arithmetic mean roughness and compression recovery properties, but is not limited to this example. For example, only the end of the mouthpiece on the downstream side that the user touches when holding the mouthpiece with his lips during smoking may satisfy these physical characteristics. The end on the downstream side is, for example, a range of 15 mm from the downstream end, preferably a range of 10 mm from the downstream end. Also in this structure, the part where the user keeps the mouthpiece with his lips during smoking meets the above-mentioned physical characteristics, so that a smoking article with a filter with a good grip feeling can be obtained.

In addition, among the smoking articles with a filter of the first embodiment, the hardness of the filter wrapped in an outer wrapper is preferably less than 90%, more preferably 80% or more, less than 90%, and more preferably Above 85% but less than 90%. For the gripping feeling of smoking articles with filters, the hardness of the mouthpiece should not be too high.

In addition, the first embodiment shows and describes an example in which the filter paper is composed of one sheet, but the filter paper may have a structure in which a plurality of sheets are bonded with an adhesive or the like.

(Second Embodiment)

The smoking article 1 with a filter of the second embodiment has the same structure as the first embodiment shown in FIG. 3, but only the materials constituting the outer wrapping paper 13 and the filter roll paper 122 are different.

(a) Outer wrapping paper (13)

The outer wrapping paper 13 is not particularly limited as long as the arithmetic average roughness of the outer peripheral surface when wound on the filter is less than 2.0 μm, more preferably less than 1.0 μm. The outer wrapping paper 13 is made of, for example, the same material as the outer wrapping paper 13 described in the first embodiment, and the thickness and basis weight are smaller than those described in the first embodiment. The outer wrapping paper 13 may be, for example, ordinary coated paper.

(b) Filter tip roll paper (122)

The bending recovery angle of the filter roll paper 122 is preferably 60 degrees or more, more preferably 100 degrees or more, and particularly preferably 100 degrees or more and 120 degrees or less. The filter roll paper 122 is made of, for example, the same material as the base layer described in the first embodiment. The filter wrapper 122 is preferably a polyethylene resin, polypropylene or other polyolefin resin, or a polyester resin film, and more preferably a film mainly composed of polyester or polyolefin. In order to improve rigidity and strength, and increase the bending recovery angle, the filter roll paper 122 is preferably a biaxially stretched film.

In order to obtain compression recovery properties suitable for the mouthpiece, the basis weight of the filter roll paper 122 is preferably 50 g/m ² or more and less than 200 g/m ^{2, and} more preferably 100 g/m ² or more and less than 200 g/m ² . In order to obtain compression recovery properties suitable for the mouthpiece, the filter roll paper 122 is preferably 50 μm or more and less than 150 μm, and more preferably 100 μm or more and less than 150 μm. If the basis weight and thickness of the outer wrapping paper 13 are large, the bending recovery angle will generally increase, and the compression recovery of the suction port will increase.

In addition, in order to obtain compression recovery properties suitable for the mouthpiece, the total basis weight of the outer wrapping paper 13 and the filter roll paper 122 is preferably 50 g/m ² or more, less than 200 g/m ² and more preferably 100 g/m ² or more , Less than 200g/m ² . In addition, in order to obtain the compression recovery of the mouthpiece, the total basis weight of the outer packaging paper 13 and the filter roll paper 122 is preferably 50 μm or more and less than 150 μm, and more preferably 100 μm or more and less than 150 μm.

Also in the structure of the second embodiment, similar to the filter-attached smoking article 1 of the first embodiment, it is possible to obtain a good effect of the user's feeling (hold feeling) when the user holds the mouth with his lips while smoking.

In addition, the second embodiment shows and describes an example in which the filter roll paper is composed of one sheet, but the filter roll paper may have a structure in which a plurality of sheets are bonded by an adhesive. In this case, it is preferable that the structure followed by a plurality of filter rolls has the above-mentioned bend recovery angle. The total basis weight and thickness of the plural filter paper rolls are preferably within the above range.

(Third Embodiment)

Fig. 4 is a schematic cross-sectional view showing an enlarged part of the cigarette with filter 2 according to the third embodiment. The cigarette 2 with a filter of the third embodiment has the same structure as the cigarette 1 with a filter of the first embodiment, except that the structure of the filter is different.

The filter 22 includes two filter assemblies 22a and 22b. Specifically, the filter 22 is a so-called dual filter composed of a first filter assembly 22a arranged on the upstream side and a second filter assembly 22b arranged on the downstream side.

The first filter assembly 22a is composed of a first filter medium 221a and a first inner filter paper 222a wound around the first filter medium 221a. The second filter assembly 22b is composed of a second filter medium 221b, and a second inner filter paper 222b wound around the second filter medium 221b. The first filter assembly 22a and the second filter assembly 22b are rolled up and connected by the outer filter roll paper 22c covering these outer peripheral surfaces. The outer wrapping paper 23 is wrapped around the downstream end of the cigarette rod 11 and the outer peripheral surface of the filter 22 to connect the cigarette rod 11 and the filter 22.

In the third embodiment, among the first and second filter assemblies 22a and 22b, at least the part corresponding to the second filter assembly 22b located on the downstream end side has a compression recovery property of 60 after a compression load of 2.5N is applied. % Or more, preferably 60% or more and less than 80%, more preferably 60% or more and less than 70%. The arithmetic mean roughness of the outer peripheral surface of at least the portion of the outer packaging paper corresponding to the second filter assembly 22b is less than 2.0 μm, preferably 1.5 μm or less, and more preferably 1.0 μm or less.

(a) Outer wrapping paper (23)

The outer wrapping paper 23 is made of, for example, the same material as the outer wrapping paper 13 described in the first embodiment.

(b) Filter material (221a, 221b)

The first filter medium 221a and the second filter medium 221b are made of, for example, the same material as the filter medium 121 described in the first embodiment.

(c) Filter tip roll paper (222a, 222b, 22c)

The first and second inner filter paper rolls 222a and 222b are made of the same material as the filter paper 122 described in the first embodiment. The outer filter paper 22c is made of, for example, the same material as the filter paper 122 of the first embodiment.

The structure of the third embodiment is also the same as the smoking article with filter of the first embodiment. The end of the downstream side that the lips touch when the user holds the mouthpiece with his lips during smoking meets the arithmetic average roughness of the outer wrapper The degree of compression and recovery of the suction port. Therefore, the structure of the third embodiment can also obtain the same effect as in the first embodiment in that the user holds the mouthpiece with his lips while smoking.

In addition, the third embodiment explained an example in which the first and second filter assemblies are made of the same material, but it is not limited to this. For example, the first filter assembly may be an activated carbon filter in which an adsorbent, such as activated carbon, is dispersed and added in the gaps between the fibers of cellulose acetate fibers, and the second filter assembly is composed of general cellulose acetate fibers. The white filter material and other functional double-layer filters.

In addition, the smoking article with filter of the third embodiment is not limited to a double-layer filter, and may have three or more filter assemblies. The smoking article with filter can have a structure with a hollow portion between two filter components, or a structure with destructive flavor capsules or fragrance particles in the hollow portion. Among these structures, as long as at least the part corresponding to the downstream end side of the plurality of filter components constituting the filter satisfies the physical properties of compression recovery and arithmetic average roughness, the filter attachment of the first embodiment can be obtained. The same effect of smoking articles in the mouth.

(Fourth Embodiment)

The smoking article with filter of the fourth embodiment has the same structure as the smoking article with filter 2 of the third embodiment shown in Fig. 4, but only constitutes the outer wrapper 23, outer filter roll paper 22c, and The material of the second inner filter roll 222b is different.

(a) Outer wrapping paper (23)

The outer wrapping paper is not particularly limited as long as the arithmetic average roughness of the outer peripheral surface when being wound on the filter is less than 2.0 μm, preferably less than 1.0 μm. The outer wrapping paper is made of, for example, the same material as the outer wrapping paper 13 described in the first embodiment, and the thickness and basis weight are smaller than those described in the first embodiment. The outer wrapping paper 23 may be general coated paper, for example.

(b) Filter tip roll paper (222a, 222b, 22c)

In the fourth embodiment, the first and second filter media 221a and 221b are wound by two filter papers of the first and second inner filter paper 222a and 222b and the outer filter paper 22c, respectively.

The material of the first inner filter paper 222a is not particularly limited, and it is made of the same material as the filter paper 122 described in the first embodiment, for example.

The material of the second inner filter paper 222b and the material of the outer filter paper 22c are formed of, for example, the same material as the base layer described in the first embodiment. The material of the second inner filter paper 222b and the outer filter paper 22c are preferably polyethylene resins, polypropylene resins and other polyolefin resins, or polyester resin films, preferably polyester or polyolefin. The main component of the biaxially stretched film.

The bending recovery angle of the second inner filter roll paper 222b and the outer filter roll paper 22c is preferably 60 degrees or more, preferably 100 degrees or more, and more preferably 100 degrees or more and 120 degrees or less.

In order to obtain the compression recovery of the suction mouth, the total basis weight of the second inner filter paper roll 222b and the outer filter paper roll 22c is preferably 50g/m ² or more but less than 200g/m ² , preferably 100g/m ² or more, less than 200g/m ² . In order to obtain the compression recovery of the suction port, the total thickness of the second inner filter paper 222b and the outer filter paper 22c is preferably 50 μm or more and less than 150 μm, and more preferably 100 μm or more and less than 150 μm. If the basis weight and thickness of the outer wrapping paper are large, the bending recovery angle is generally increased, and the compression recovery of the suction port is improved.

In addition, in order to obtain compression recovery of the mouthpiece, the total basis weight of the outer wrapping paper 23, the second inner filter paper roll 222b, and the outer filter paper roll 22c is preferably 50 g/m ² or more and less than 200 g/m ² , Preferably more than 100 g/m ² and less than 200 g/m ² . In order to obtain compression recovery of the suction mouth, the total thickness of the outer wrapping paper 23, the second inner filter paper 222b, and the outer filter paper 22c is preferably 50μm or more and less than 150μm, preferably 100μm or more and less than 150μm.

Also in the structure of the fourth embodiment, the downstream end that the user touches while holding the mouthpiece with lips during smoking satisfies the arithmetic average roughness of the outer wrapper and the compression recovery of the mouthpiece. The structure of the fourth embodiment is also the same as that of the smoking article with a filter of the third embodiment, and it is possible to obtain a good effect in that the user holds the mouth part with his lips while smoking.

In addition, the fourth embodiment shows and describes an example in which the filter medium arranged at the downstream end is wound by two filter paper rolls, but it may be a structure in which three or more filter papers are wound. In this case, it is preferable that the following plural filter roll papers have the above-mentioned bend recovery angle. In addition, the total basis weight and thickness of the plurality of filter roll papers are preferably within the above-mentioned range.

(Examples and Comparative Examples)

Hereinafter, examples and comparative examples are used to further explain the embodiment.

Using the outer wrappers, filters, and test samples of Examples 1 to 7 and Comparative Examples 1 to 4 shown in Table 1, tests (1) to (5) described below were performed. The test sample is a filter wrapped in an outer wrapper made by the method described later. The outer wrapping papers of Examples 1 to 7 and Comparative Examples 1 to 4 were subjected to measurement of (1) arithmetic average roughness and (2) bending recovery angle. Next, the test samples were used for sensory evaluation of (3) compression recovery, (4) hardness, and (5) holding feeling.

Table 1 shows the product name, basis weight, thickness, arithmetic average roughness and bend recovery angle of the outer wrapping paper used in Examples 1 to 7 and Comparative Examples 1 to 4, the plasticity amount of the filter, and the test sample Sensory test results of compression recovery, hardness and holding feeling.

First, the outer wrappers of Examples 1 to 7 and Comparative Examples 1 to 4 will be described. Examples 1 to 3 used synthetic paper PEACHCOAT ^® (WER-135DS, Nisshinbo Paper Co., Ltd.). PEACHCOAT ^® is composed of a base layer of a polyethylene terephthalate film of polyester resin and a surface layer of a white pigment coating layer. Example 4-5 used the synthetic paper ^{YUPO TRACE ® (TPRA # 60)} , Yupo Corporation Ltd.) embodiment. Example 6 and 7 Using ^{YUPO TRACE ® (TPRA # 90,} Yupo Corporation Ltd.). YUPO TRACE ^® is composed of a base layer of a biaxially stretched film made of polypropylene resin and a surface layer of a paper layer made of resin. On the other hand, Comparative Example 1 used general-purpose cigarette paper composed of paper used in cigarettes with filters such as Mevius ^® (Light) of Japan Tobacco Co., Ltd. Comparative Examples 2 to 4 used cellophane (basis weight 33 g/m ² , thickness 30 μm).

Next, the filters of Examples 1 to 7 and Comparative Examples 1 to 4 will be described. The filter material is cellulose acetate fiber (DAICEL Co., Ltd.) with a denier number of 1.9 g/9000 m of filament yarn. As the filter roll paper, general-purpose filter roll paper, that is, paper with a thickness of 50 μm and a basis weight of 27 g/m ² (manufactured by Japan PAPYLIA Paper Co., Ltd.) was used.

The filters of Example 1, Comparative Examples 1 and 2 used a filter material composed of only cellulose acetate fibers. The filters of Examples 2, 4, and 6 and Comparative Example 3 used a filter medium in which 9.0% by weight of glycerol acetate plasticizer was added to the cellulose acetate fiber. In addition, the filters of Examples 3, 5, 7 and Comparative Example 4 used filter media in which 17.0% by weight of glycerol acetate plasticizer was added to the cellulose acetate fiber.

In addition, the test sample was produced by the following method. The filter media of Examples 1 to 7 and Comparative Examples 1 to 4 were rolled up and cut using a common method to produce filters with a length of 27 mm and a diameter of 24.2 mm. Next, the outer wrapping paper rolls of Examples 1 to 7 and Comparative Examples 1 to 4 were installed on each filter using a double-sided tape. In addition, in this test sample, the double-sided tape is only used at the junction of the outer wrapping paper, so it will not affect the sensory test of the holding feeling.

Hereinafter, the contents of the tests (1) to (5) will be explained.

(1) Arithmetic average roughness

The outer wrapping papers of Examples 1 to 7 and Comparative Examples 1 to 4 were measured for arithmetic average roughness. The arithmetic average roughness is measured with the surface that is set as the outer peripheral surface when the filter is wound among the surfaces of the outer wrapper. The measurement of the arithmetic average roughness was measured using Surf test SJ-210 (trade name) manufactured by Mitutoyo Co., Ltd. The filter processing in the measurement of the arithmetic average roughness uses a Gaussian filter. In addition, the detection machine uses a shape with a STYLUS tip R=2μm and a tip angle of 60°. The measurement conditions are determined by setting the standard conditions in accordance with ISO1997, and setting the roughness curve R to the critical value λ c = 2.5 mm, λ s = 8 μm, and the number of intervals (N) 4.

(2) Bending recovery angle

The outer wrappers of Examples 1 to 7 and Comparative Examples 1 to 4 were subjected to the measurement of the bending recovery angle. The evaluation machine uses rubber rollers and metal rollers that can contact each other to form a pinch pressure of 0.1MPa. First, the outer wrapping papers of Examples 1 to 7 and Comparative Examples 1 to 4 were cut into a size of 5.5cm×5.5cm, and then bent without wrinkles, while aligning one side with the opposite side to form a loop shape. Next, it was passed between the rubber rollers and metal rollers of the above-mentioned evaluation machine, and the outer wrapping paper folded at 180 degrees was quickly moved onto the test bench, and the bending recovery angle (°) after 30 seconds was measured.

(3) Compression recovery

The test samples of Examples 1 to 7 and Comparative Examples 1 to 4 were subjected to a compression recovery test. Compression restorability can be calculated from the compression deformation amount-compression restoring force curve obtained by plotting the compression restoring force [N] corresponding to the compression deformation amount [mm] as shown in Figure 1. The amount of compression deformation [mm] is the amount of deformation due to the diameter of the test sample compressed by the compression load. Compression restoring force [N] is the force from the compressed test sample to return to its original shape.

The compression deformation-compression restoring force curve was measured using an ammeter (CR-3000EX-S manufactured by SUN Science) as an evaluation machine. Figure 5 is a schematic diagram of a method for measuring compression recovery. The ammeter is provided with a measuring table 103 for placing a test sample; and a cylindrical plunger 104 with a diameter of 10 mm. Next, the test sample 105 is placed on the upper surface of the measuring table 103 of the galvanometer so that its side surface can be in contact with it. When the plunger 104 does not apply a compressive load to the test sample 105 (Figure 5(a)), the compression restoring force from the test sample 105 is 0 N, and the amount of compression deformation is 0 mm (point A). Next, until the compression load applied to the test sample 105 becomes 2.5N, the cylindrical plunger 104 is moved in the vertical direction at a speed of 13 mm/min, and the test sample 105 is compressed in the vertical direction (Figure 5(b)) . Record the compression restoring force [N] (curve AB) corresponding to the amount of compression deformation [mm] at this time. Next, when the compression load reaches 2.5N (compression restoring force is 2.5N), the compression operation by the plunger 104 is stopped, and the compression deformation amount T _B mm at that time is recorded (point B). Then, the compression operation is stopped, the plunger 104 can be moved freely in the vertical direction, and the compression restoring force [N] corresponding to the compression deformation mm when the shape is restored to 0N from the restoring force of the test sample 105 is recorded. (Curve BC). Next, when the compression restoring force reaches 0N, the amount of compression deformation T _C mm at that time is recorded (point C). As a result, among the compression deformation amount-compression restoring force curve shown in Fig. 1, different curves are shown during compression (curve AB) and during restoration (curve BC). In Figure 1, the point where the amount of compression deformation T _B mm and the compression restoring force are 0N is set to point D.

Calculate the amount of work (area of area ABD) during compression (curve A-B) and the amount of work (area CBD) during recovery (curve B-C) in the compression deformation-compression restoring force curve. Compression recovery [%] can be calculated by the following formula.

Compression recovery [%]=(area of regional CBD)/(area of regional ABD)×100[%]

(4) Hardness

The test samples of Examples 1 to 7 and Comparative Examples 1 to 4 were tested for hardness. The evaluation machine is a Densmeter DD60A manufactured by Borgward Corporation. The hardness can be determined by applying a load of 2 kg to 10 test samples for 20 seconds and measuring the average diameter of the recesses of the filter wrapped in an outer wrapper. The test can be carried out at an ambient temperature of 22 ± 2 degrees Celsius in accordance with the standard test method used for the machine.

This device has two parallel metal cylinder pairs each with a length of 16 cm and a diameter of 10 mm. Arrange the first cylinder pair 16mm in parallel below the 10 as a support for the test sample, and place the 10 test samples in parallel and equally spaced such that the test sample straddles these first cylinder pairs Configuration. During the test, the first cylinder pair is at a standstill. The second cylinder pair is aligned with the first cylinder pair. During the test, the first cylinder pair and the second cylinder pair clamp the test sample and approach each other. The second cylinder pair is arranged to be movable toward 10 test samples, and a load of 2 kg is applied across the 10 test samples. At this time, the first and second cylinder pairs were in contact with the test sample at 20 points, respectively. After 20 seconds of maintaining the load on the test sample, the test is completed after measuring the diameter of the compressed test sample. In the test, the test samples are arranged separately without touching each other. In order to support the front end of the 10 test samples, the frame can be used. During the test, the state where the 10 test samples are parallel and equally spaced can be maintained and supported. This test method is the same as the hardness measurement method described in JP 2016-523565 A.

(5) Sensory evaluation of the sense of holding

A panel of 23 judges actually hold the test samples of Examples 1 to 7 and Comparative Examples 1 to 4, and perform sensory evaluation on the feeling of holding the mouthpiece with the lips (hold feeling). In addition, a panel of 23 judges who felt that the sense of holding was "7" when they liked it very much, "6" when they liked it, "5" when they liked it, and "4" when they felt acceptable. If you don't like it a bit, it is "3", if you don't like it, it is "2", and if you don't like it very much, it is "1". The values are evaluated and averaged.

As can be seen from the results in Table 1, the arithmetic average roughness of the outer peripheral surface of the outer wrapping paper is less than 2.0 μm, and the test samples of Examples 1 to 7 in which the compression recovery is 60% or more have a sensory evaluation of 4.0 to 5.1. Numerical value. The test samples of Examples 1 to 7 all have a bending recovery angle of the outer wrapping paper of 100 degrees or more. In addition, in Examples 1 to 7, in Examples 1, 4, and 6 where the hardness of the test sample was less than 90%, the sensory evaluation was particularly high from 4.6 to 5.1. In particular, in Example 1, where the arithmetic mean roughness is 0.7 μm or less, the compression recovery is 61%, the hardness is 89%, and the bending recovery angle is 100 degrees, the holding feeling is 5.1, which is the highest value.

In contrast, in Comparative Examples 1 to 4 in which the arithmetic average roughness is 2.0 or more, the sensory evaluation is a low value less than 4.0. In Comparative Examples 1 to 4, the bending recovery angle of the outer wrapping paper was less than 60 degrees.

As described above, the arithmetic average roughness of the outer peripheral surface of the outer wrapping papers of Examples 1 to 7 is less than 2.0 μm and the compression recovery is 60% or more of the test samples, the sensory evaluation is high, and the attractiveness is improved.

In addition, although several embodiments have been described, these embodiments are only examples and do not limit the scope of the invention. These embodiments can be implemented in various other forms, and various changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and summary of the invention, and are also included in the invention described in the scope of the patent application and its equivalent scope.

Claims (16)

A smoking article with a filter, characterized by comprising: a smoke generating member; a filter provided with a filter material and one or more filter paper wrappers on the outer peripheral surface of the filter material; and an end of the smoke generating member The outer wrapper wrapped with the outer peripheral surface of the filter tip and the outer wrapper, the arithmetic average roughness of the outer peripheral surface of the outer wrapper is less than 2.0μm, and the filter wrapped with the outer wrapper has a length of 10mm In the range of, the compression recovery after a compression load of 2.5 N is applied in the radial direction is 60% or more, and the hardness of the filter tip wrapped with the outer wrapping paper is less than 90%. The filter-attached smoking article described in claim 1, wherein the arithmetic average roughness of the outer peripheral surface of the outer wrapper is 1.0 μm or less. The smoking article with filter described in item 1 or 2 of the scope of patent application, wherein the bending recovery angle of the outer wrapper or the one or more filter roll papers is 60 degrees or more. The filter-attached smoking article described in item 3 of the scope of patent application, wherein the bend recovery angle of the outer wrapper or the one or more filter wrappers is 100 degrees or more. Such as the smoking article with filter described in item 4 of the scope of patent application, which Wherein, the bending recovery angle of the outer wrapping paper or the one or more pieces of filter roll paper is 100 degrees or more and 120 degrees or less. The filter-attached smoking article described in claim 1, wherein the outer wrapper is a sheet containing a plurality of layers. The filter-attached smoking article described in claim 6, wherein the sheet comprising a plurality of layers comprises a base layer composed of a film mainly composed of polyolefin or polyester. The filter-attached smoking article described in claim 7, wherein the substrate layer is a biaxially stretched film. The filter-attached smoking article described in claim 7 or 8, wherein the sheet material comprising a plurality of layers further includes a surface layer provided on one or both sides of the base layer. The filter-attached smoking article described in claim 9, wherein the surface layer contains an inorganic filler. The smoking article with filter as described in item 1 or 2 of the scope of patent application, wherein the basis weight of the outer wrapper is 100 g/m ² or more. The filter-attached smoking article described in item 1 or 2 of the scope of patent application, wherein the thickness of the outer wrapper is 100 μm or more. The smoking article with filter as described in the first item of the scope of patent application, wherein the aforementioned one or more filter roll paper is a film mainly composed of polyolefin or a film mainly composed of polyester. The filter-attached smoking article described in item 13 of the scope of patent application, wherein the aforementioned one or more pieces of filter roll paper are biaxially stretched films. The filter-attached smoking article described in item 13 or 14 of the scope of the patent application, wherein the total basis weight of the aforementioned one or more pieces of filter roll paper is 100 g/m ² or more. The filter-attached smoking article described in item 13 or 14 of the scope of patent application, wherein the total thickness of the aforementioned one or more pieces of filter paper is 100 μm or more.

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