HK1110482B - Filter holder used for smoking, smoking pipe, and smoking pipe unit - Google Patents

Description

Filter holder for smoking, smoking pipe and smoking pipe unit

Technical Field

The present invention relates to a filter holder for smoking, a smoking pipe having the filter holder, and a smoking pipe unit.

Background

A smoking pipe to which one end of a cigarette can be attached as a rod-shaped smoking article is disclosed in, for example, japanese unexamined patent publication No. 51-65988 (document 1). The smoking pipe of this document 1 includes: the cigarette filter comprises a socket formed at one end thereof and capable of receiving one end of a cigarette, a mouthpiece formed at the other end thereof, and a filter member housed in a filter member holder, the filter member being positioned between the socket and the mouthpiece.

Before smoking, the smoking pipe is installed at one end of the cigarette. Then the smoker holds the fire close to the other end of the cigarette and can smoke by holding the cigarette holder of the smoking pipe. In this case, the mainstream smoke of the cigarette is fed from the mouthpiece to the mouth of the smoker after passing through the filter member in the smoking tube, and therefore, part of the particulate phase components such as tar and nicotine in the mainstream smoke is captured by the filter member. So that the smoker can enjoy an easy smoking feeling.

However, the filter member of the smoking pipe of document 1 cannot reduce the vapor phase components (acetaldehyde, acetone, benzene, etc.) and gas phase components (CO, NO, etc.) contained in the mainstream smoke, and these vapor phase components and gas phase components are fed into the mouth of the smoker without being removed by the filter member.

In this regard, the filter cigarette disclosed in Japanese patent application laid-open No. 11-346748 (reference 2) has a row of holes formed in the tipping paper (チツプペ - パ), and the smoking pipe disclosed in Japanese patent application laid-open No. 56-15683 (reference 3) has a row of holes formed in the outer peripheral wall thereof. The above-described opening row allows external air to be introduced into the filter member during smoking, and the introduced air dilutes mainstream smoke. This dilution of mainstream smoke not only reduces the particulate phase components such as tar and nicotine delivered into the smoker's mouth, but also reduces the vapor phase components and gas phase components.

In the case of the dilution-type filter cigarette or the smoking tube, if the dilution ratio of the mainstream smoke is too high, the amount of tar in the mainstream smoke delivered into the smoker's mouth, that is, the amount of nicotine in the tar, is undesirably reduced, and the smoker cannot taste the original flavor and taste of the cigarette. Therefore, the document 2 has found that the reduction rate of tar (T) is suppressed as compared with the reduction rate of CO by locating the opening row on the upstream side of the filter member as viewed in the flow direction of the mainstream smoke. As a result, the filter cigarette according to document 2 is thought to ensure the amount of tar to be delivered into the mouth of the smoker as desired because the C/T (CO/T) value is reduced. In this regard, in the case of the smoking pipe of document 3, the opening is arranged on the upstream side of the filter member, and therefore the smoking pipe of document 3 is not limited to have the same advantages as those of the filter cigarette of document 2.

In the case of the filter cigarette of document 2, since the perforation row is located at the upstream side of the filter member, the perforation row must be formed at the tip of the tipping paper on the cigarette side. However, since the end of the tipping paper is an important element for joining the filter element to the cigarette, it needs to be firmly bonded to the cigarette. That is, it is required to apply the paste to the entire inner surface of the end of the tab paper. When the opening rows are formed at the end portions of the tab paper without being bound to the requirement, the paste is applied to the inner surfaces of the end portions except the opening rows, and thus the area of the paste applied cannot be sufficiently secured. As a result, the filter element completed with the tipping paper has insufficient bonding strength with the cigarette, and it is substantially difficult to form a row of openings at the end of the tipping paper.

In this regard, in the case of document 3, the hole array can be formed in the smoking pipe itself, and the smoking pipe of document 3 does not have the above-described disadvantage of the filter cigarette of document 2. However, in the cases of documents 2 and 3, the open-pore rows may be partially closed by the fingers of the smoker during smoking. Even if a part of the open hole row is blocked, the introduction of air into the filter member becomes insufficient, and the mainstream smoke cannot be diluted as desired.

The above-mentioned smoking pipe is preferably subjected not only to the ordinary basic processing of removing tar from mainstream smoke and diluting the vapor phase component and the gas phase component, but also to an additional processing of adding an aroma such as menthol to mainstream smoke at the time of smoking.

Disclosure of Invention

The present invention has an object to provide a filter holder for smoking, a smoking pipe having the filter holder, and a smoking pipe unit, which can reliably exhibit the above-described normal basic function or additional function with respect to mainstream smoke at the time of smoking.

In order to achieve the above object, a filter element holder of the present invention is a tubular body including: a tubular body having: a holder portion formed at one end thereof and capable of holding a smokable material; a chamber defined within the tubular body adjacent the retainer portion and housing a filter member for filtering mainstream smoke of the smokable material; a mixing device for mixing a gaseous fluid for treating the mainstream smoke with the mainstream smoke at least one location of an upstream region including an upstream end of the chamber and a downstream region of the chamber as viewed in a flow direction of the mainstream smoke.

Before using the filter holder, the filter is housed in a chamber of the filter holder, and a rod-shaped smoking article such as a cigarette is held by a holder portion of the filter holder. In this state, the smoker can draw the mainstream smoke of the rod-shaped smoking article from the other end of the filter holder by bringing the fire close to the rod-shaped smoking article. When the mainstream smoke passes through the filter member, part of the particulate phase components such as tar and nicotine contained in the mainstream smoke is captured by the filter member.

The mixing device mixes mainstream smoke with a gaseous fluid in the filter holder during smoking, and the fluid performs dilution and/or aroma addition to the mainstream smoke.

In particular, the mixing device can comprise: a recess formed on the outer peripheral surface of the tubular body and not shielded by the fingers of a smoker even if the tubular body is held by the fingers; and a vent hole having one end opening in the recess and the other end opening in the inner peripheral surface of the tubular body in the upstream region. Preferably, the recess is an annular groove formed on the outer peripheral surface of the tubular body, and the vent hole is formed in the bottom of the annular groove.

When smoking, the outside air is introduced into the tubular body through the ventilation holes. Thus, the introduced air dilutes the mainstream smoke. Since the vent hole is formed in the recess, i.e., the bottom of the annular groove, the vent hole is not blocked by fingers even if the smoker grasps and holds the filter element holder with the fingers. Therefore, dilution processing can be reliably performed on the mainstream smoke at the time of smoking.

Since the ventilation hole is formed not in a rod-shaped smoking article such as a cigarette but in the tubular body, the degree of opening of the ventilation hole can be sufficiently secured, and the dilution ratio of the mainstream smoke can be easily increased.

In the case of a normal filter cigarette, if the dilution ratio of the mainstream smoke is not high, the concentration of CO in the mainstream smoke decreases, but at the same time, the particulate phase components such as tar and nicotine also decrease, and the C/T value cannot be effectively lowered.

However, the filter element used in the filter element holder of the present invention has a lower ventilation resistance than a filter of a general filter cigarette, and the C/T value is effectively reduced by reducing the filtration rate of the filter element with respect to particulate phase components such as tar and nicotine.

On the other hand, when a filter member having a small ventilation resistance is used in a normal filter cigarette, the ventilation resistance of the entire filter cigarette is also reduced, and therefore, a smoker feels a large uncomfortable feeling when smoking.

In this regard, the filter holder according to the present invention can ensure the same ventilation resistance as that of a normal filter cigarette by providing the mixing device disposed in the upstream region of the chamber for housing the filter, that is, by providing the ventilation hole to compensate for the reduction in the ventilation resistance of the filter itself.

As a result, according to the filter holder of the present invention, the C/T can be reduced without undesirably decreasing the particle phase components such as tar and nicotine, and the same ventilation resistance as that of a normal filter cigarette can be ensured at the time of smoking, so that a smoker can sufficiently taste the original flavor and taste of the smoking article.

The mixing device may further comprise a dilution chamber within the tubular body between the retainer portion and the chamber, the dilution chamber being connected to the vent. The mainstream smoke is well mixed with the outside air in the dilution chamber, and the mainstream smoke is uniformly diluted.

The mixing device may further include an adjustment ring for adjusting the opening degree of the vent hole, the adjustment ring being disposed in the annular groove and being movable in one of the circumferential direction and the axial direction of the tubular body. Thus, the adjustment ring can easily adjust the dilution ratio of the mainstream smoke, that is, the ventilation degree of the filter holder.

As described above, when the smokable material is a rod-shaped smoking article such as a cigarette, the holder portion of the tubular body is preferably configured to form a cylindrical socket for receiving an end portion of the rod-shaped smoking article.

On the other hand, the mixing device has a downstream chamber secured downstream of the chamber within the tubular body and housing a flavour generating element for generating an additional flavour to the mainstream smoke. In this case, when the filter holder of the present invention is used for smoking in a state where the filter and the flavor generating element are housed in the tubular body, the aromatic component generated from the flavor generating element is mixed with the mainstream smoke having passed through the filter. Therefore, the smoker can taste the aroma of the aroma generating element on the basis of the original flavor and taste of the mainstream smoke.

In particular, said tubular body can comprise: a primary portion having an upstream chamber and a secondary portion having a downstream chamber, the primary and secondary portions being capable of being separately joined.

The invention provides a smoking pipe with the filter part retainer. Specifically, the smoke absorbing pipe of the present invention comprises: a filter holder that is a filter holder having a tubular body including a holder portion formed at one end thereof and capable of holding a smokable material, and a chamber defined in the tubular body in abutment with the holder portion and housing a filter for filtering mainstream smoke of the smokable material; a mouthpiece provided at the other end of the tubular body; and a mixing device for mixing a gaseous fluid for treating the mainstream smoke with the mainstream smoke at least one location of an upstream region including an upstream end of the chamber and a downstream region of the chamber as viewed in a flow direction of the mainstream smoke.

The mixing device of the smoking pipe may include: the mechanism for introducing dilution air and/or a downstream chamber downstream of the chamber for housing a scent generating element.

And the present invention provides a smoking pipe unit having the filter holder. Specifically, the smoke suction pipe unit of the present invention comprises: a filter element holder which is a filter element holder having a tubular body including a holder portion formed at one end thereof and capable of holding a smokable material, and an upstream chamber defined in the tubular body in abutment with the holder portion and a downstream chamber secured in the tubular body downstream of the upstream chamber; a mixing device for mixing a gaseous fluid for treating mainstream smoke with mainstream smoke at least at one location of an upstream region including an upstream end of an upstream chamber and a downstream chamber as viewed in a flow direction of the mainstream smoke; a filter element package that hermetically encloses a filter element for filtering mainstream smoke of the smokable material when received in the upstream chamber; and an element package which hermetically packages the flavor generating element for generating a flavor to the mainstream smoke when the element package is housed in the downstream chamber.

And the present invention provides a smoking pipe in which the filter and the flavor generating element are previously combined. Specifically, the smoke absorbing pipe of the present invention comprises: a filter holder having a tubular body, the tubular body including a holder portion formed at one end thereof and capable of holding a smokable material, an upstream chamber defined in the tubular body in abutment with the holder portion, and a downstream chamber secured downstream of the upstream chamber; an adsorption type filter member which is housed in the upstream chamber and filters mainstream smoke of a smoke absorbable material; a flavor generating element housed in the downstream chamber and generating a flavor to be added to the mainstream smoke; a separating device for air-tightly separating the flavor generating element from the filter member before the smoking pipe is used and allowing air to flow between the filter member and the flavor generating element before the smoking pipe is used. Specifically, the filter part is a charcoal filter part, and the flavor generating element volatilizes menthol.

The separation device can reliably prevent the aromatic components generated by the aroma generating element from being absorbed into the absorption type filter component before the smoking pipe is used, and the original absorption performance of the absorption type filter component is not damaged.

Drawings

FIG. 1 is a sectional view showing a smoking pipe using a filter holder according to a first embodiment exploded into one part;

FIG. 2 is a perspective view showing a bubble pack of a charcoal filter or a flavor generating element used in the smoking pipe of FIG. 1;

FIG. 3 is a perspective view showing an airtight container in place of the bubble pack of FIG. 2;

FIG. 4 is an enlarged view of a portion of the filter element holder of FIG. 1;

FIG. 5 is a cross-sectional view of the smoking tube of FIG. 1 in an assembled state;

FIG. 6 is a schematic view showing a filter-tipped cigarette according to a first comparative example;

FIG. 7 is a schematic view showing a filter-tipped cigarette according to a second comparative example;

FIG. 8 is a schematic view showing a filter-tipped cigarette according to a third comparative example;

FIG. 9 is a schematic view showing a filter cigarette to be authenticated according to the present invention;

FIG. 10 is a graph showing the results of comparison between the first comparative example and the object of verification with respect to tar and CO;

FIG. 11 is a diagram showing the results of comparison between the first comparative example and the verification target with respect to C/T;

fig. 12 is a diagram showing a comparison result between the third comparative example and the verification target with respect to the menthol delivery amount;

FIG. 13 is a cross-sectional view showing a portion of a filter element holder according to a second embodiment of the present invention;

FIG. 14 is a cross-sectional view showing a portion of a filter element holder according to a third embodiment of the present invention;

FIG. 15 is a cross-sectional view showing a portion of a filter element holder according to a fourth embodiment of the present invention;

FIG. 16 is a cross-sectional view of a smoking tube having a filter holder according to a fifth embodiment of the present invention;

FIG. 17 is a side elevational view of a smoking tube having a filter holder according to a sixth embodiment of the invention;

FIG. 18 is an exploded cross-sectional view showing a filter element holder according to a seventh embodiment of the present invention;

FIG. 19 is an exploded cross-sectional view showing a filter element holder according to an eighth embodiment of the present invention;

FIG. 20 is a sectional view showing a filter element holder according to a ninth embodiment of the present invention before use;

FIG. 21 is a sectional view showing a state of use of the filter element holder of FIG. 20;

FIG. 22 is a sectional view showing a filter element holder according to a tenth embodiment of the present invention;

FIG. 23 is a sectional view showing a filter element holder according to an eleventh embodiment of the present invention;

FIG. 24 is a sectional view showing a filter element holder according to a twelfth embodiment of the present invention before use;

FIG. 25 is a cross-sectional view showing an in-use state of the filter element holder of FIG. 24;

FIG. 26 is a sectional view showing a filter element holder according to a thirteenth embodiment of the present invention;

FIG. 27 is a sectional view showing a filter element holder according to a fourteenth embodiment of the present invention before use;

FIG. 28 is a cross-sectional view of the filter element holder of FIG. 27;

FIG. 29 is a sectional view showing an in-use state of the filter element holder of FIG. 27;

fig. 30 is a sectional view showing a filter element holder according to a fifteenth embodiment of the invention;

fig. 31 is a cross section showing a paper filter element.

Detailed Description

The smoking pipe of the first embodiment shown in fig. 1 has a filter holder 10. The filter holder 10 has a tubular body 12, which is a hollow round holder formed of synthetic resin, and the tubular body 12 has open ends at both ends thereof, respectively.

The tubular body 12 has a socket portion 14 and a loading portion 15 formed at one end and the other end, respectively, and the socket portion 14 and the loading portion 15 are divided by an annular space 16 in the tubular body 12. The annular space 16 protrudes from the inner circumferential surface of the tubular body 12. Therefore, the inner diameter of the annular space 16 is smaller than the inner diameter of the socket 14. Since the inner diameter of the socket portion 14 is slightly larger than the outer diameter of the rod-shaped smoking article C, the rod-shaped smoking article C can be inserted into the socket portion 14 until it abuts against the annular gap 16. The rod-shaped smoking article C includes cigarettes, filter cigarettes, cigarillos, cigars, and the like having cut surfaces at both ends.

The annular space 16 has a predetermined thickness in the axial direction of the tubular body 12, and is formed as a dilution chamber 18 therein. The diluting chamber 18 connects the inside of the socket portion 14 and the inside of the filling portion 15 to each other. The loading portion 15 is formed as a processing chamber 20 for mainstream smoke. More specifically, a part of the treatment chamber 20 located on the dilution chamber 18 side of the treatment chamber 20 is used as the filter storage chamber 22, and the remaining part of the treatment chamber 20 located on the other end side of the tubular body 12 is used as the flavor storage chamber 24.

A path from the dilution chamber 18 to the flavor storage chamber 24 through the filter storage chamber 22 forms a treatment flow path for performing the basic treatment and the additional treatment on the mainstream smoke of the rod-shaped smoking article. The entire processing chamber 20 may be used as the filter storage chamber 22.

The filter housing chamber 22 can receive, for example, a filter 26, and the filter 26 is detachably inserted into the filter housing chamber 22 through the flavor housing chamber 24 from the other end opening of the tubular body 12.

In this embodiment, the filter member 26 is, for example, a charcoal filter member, and has a smaller ventilation resistance than the filter of a conventional filter cigarette. The charcoal filter part 26 includes: a main filtering part 28 arranged at the center thereof, auxiliary filtering parts 30 respectively arranged at both ends of the main filtering part 28, and a forming paper 31 wrapping the filtering parts 28, 30 and combining the filtering parts 28, 30. The main filtering portion 28 has: the filter element comprises a filter element material formed by a fiber bundle of acetate fibers, activated carbon particles distributed in the filter element material, and a winding paper wrapping the filter element material into a cylindrical shape. The sub-filter portion 30 has: a filter member similar to that of the main filter portion 28, and a wrapping paper wrapping the filter member in a cylindrical shape.

Since the charcoal filter part 26 described above has the sub-filter parts 30 at both ends of the main filter part 28, respectively, the activated carbon particles in the main filter part 28 do not fall off from the charcoal filter part 26. The charcoal filter part 26 may have only the main filter portion 28.

The fragrance storage chamber 24 stores therein a cylindrical fragrance generating element 32 so as to be removable therefrom. The aroma generating element 32 comprises: for example, a filter material similar to the above filter material, a flavor such as menthol added to the filter material, and a wrapping paper for wrapping the filter material in a cylindrical shape. The fragrance generating element 32 may also have a filtering part at both ends thereof like the sub-filtering part 30 of the charcoal filtering part 26.

The charcoal filter member 26 and the flavor generating element 32 are preferably hermetically sealed before being housed in the housing chambers 22, 24 of the tubular body 12, respectively. The packaging of the charcoal filter part 26 and the aroma generating element 32 is for example suitable for: as shown in fig. 2, the bubble pack 34 can pack the charcoal filter 26 and the flavor generating element 32 one by one, and as shown in fig. 3, the charcoal filter 26 and the flavor generating element 32 can be stored in a predetermined number of tubular airtight containers 38, and the airtight containers 38 have openable and closable lids 36.

The bubble encapsulation 34 and the airtight container 38 described above are part of the smoking pipe unit together with the filter holder 10.

The smoking pipe of the present embodiment has a mouthpiece 40, and the mouthpiece 40 is formed of a synthetic resin. The mouthpiece 40 is removably attached to the other end of the tubular body 12.

As shown in fig. 4, the tubular body 12 has an annular groove 42 on its outer peripheral surface. The annular groove 42 extends around the entire circumference of the tubular body 12 at a position surrounding the dilution chamber 18. The width of the annular groove 42 is sufficiently narrower than the width of the smoker's finger so that the finger does not intrude into the annular groove 42.

The annular groove 42 is formed with a plurality of vent holes 44. The vent holes 44 have one end opened to the bottom of the annular groove 42 and the other end communicating with the dilution chamber 18, and are distributed at predetermined intervals in the circumferential direction of the annular groove 42. Thus, the annular groove 42 and the vent hole 44 form an air inlet for introducing outside air into the dilution chamber 18.

The assembly of the smoking pipe is performed in the following order.

First, the charcoal filter 26 and the flavor generating element 32 are inserted into the filter holder 10, that is, the housing chamber 20 of the tubular body 12 in order from the other end of the tubular body 12, and the charcoal filter 26 and the flavor generating element 32 are disposed in the filter housing chamber 22 and the flavor housing chamber 24, respectively. A mouthpiece 40 is then fitted to the other end of the tubular body 12.

After the smoking pipe is assembled in this manner, for example, a cigarette C as a rod-shaped smoking article is inserted into the socket portion 14 of the filter holder 10, and the cigarette C and the smoking pipe are connected to each other. In this state, the smoker holds the mouthpiece 40 of the smoking pipe and lights the tip of the cigarette C, so that the cigarette C can be smoked.

At the time of smoking, the mainstream smoke of the cigarette C inhaled by the smoker first flows into the dilution chamber 18, while the outside air is introduced into the dilution chamber 18 through the vent hole 44 of the annular groove 42 by the inhalation of the mainstream smoke. The introduced air dilutes the mainstream smoke in the dilution chamber 18, and the diluted mainstream smoke is sent into the mouth of the smoker through the charcoal filter 26 and the flavor generation element 32. Such dilution of the mainstream smoke reduces the amount of particulate phase components such as tar and nicotine in the mainstream smoke actually delivered into the smoker's mouth, or reduces the amount of vapor phase components and gas phase components in the mainstream smoke, respectively.

Since the ventilation holes 44 are formed in the bottom of the annular groove 42, the ventilation holes 44 are not blocked by the fingers of the smoker when smoking. Therefore, the ventilation hole 44 and the annular groove 42 can reliably introduce the outside air into the dilution chamber 18, and the dilution ratio of the mainstream smoke is high.

The diluted mainstream smoke passes through the charcoal filter 26, and at this time, the filter material of the charcoal filter 26 captures a part of the particulate phase components such as tar and nicotine from the mainstream smoke, and the activated carbon particles in the filter material adsorb a part of the vapor phase components in the mainstream smoke. Therefore, the steam component in the mainstream smoke is greatly reduced by the dilution effect and the adsorption effect described above.

When the dilution ratio of the mainstream smoke is high and the ventilation resistance of the charcoal filter 26 is low, the CO concentration in the mainstream smoke inhaled by the smoker can be reduced without undesirably reducing the particle phase components such as tar and nicotine, and the C/T can be greatly reduced.

On the other hand, since the dilution chamber 18 is located immediately upstream of the charcoal filter 26 in the flow direction of the mainstream smoke and the dilution ratio of the mainstream smoke is high, the cigarette holder 10 can provide the same ventilation resistance as that of a normal filter cigarette to a smoker by passing the diluted mainstream smoke through the charcoal filter 26.

As described above, even if the C/T is reduced, the particle phase components such as nicotine and tar and the smoking resistance are not undesirably reduced, so that the smoker can sufficiently taste the original flavor and taste of the cigarette C without giving an uncomfortable feeling to the smoker at the time of smoking.

Then, the mainstream smoke flows from the charcoal filter part 26 toward the flavor generating element 32 and passes through the flavor generating element 32. At this time, the aromatic components volatilized from the flavor of the flavor generating element 32 are added to the mainstream smoke, and these aromatic components are fed into the mouth of the smoker through the mouthpiece 40 together with the mainstream smoke, with the result that the smoker can taste the flavor together with the flavor and taste of the cigarette C.

As previously described, the flavor generating element 32 is initially adjacent to the charcoal filter 26 within the filter holder 10 during assembly of the smoking tube. Therefore, the activated carbon particles in the charcoal filter part 26 are not attacked by the aroma component volatilized from the flavor generating element 32 before the smoking pipe is assembled, that is, before smoking of the cigarette C. As a result, the charcoal filter part 26 sufficiently performs its original function at the time of smoking.

In order to verify the advantages of the smoking pipe of the first embodiment, the filter cigarettes of the first to third comparative examples shown in fig. 6 to 8 were prepared.

The filter cigarette of fig. 6 (first comparative example) is a super soft and seven star (trade name) commercially available, and has a cigarette Cm and a double filter having an open pore row. The double filter has a charcoal filter portion CF corresponding to the main filter portion 28 (see fig. 1) described above and a normal filter portion AF. The normal filtering portion AF is the same as the sub-filtering portion 30 described above.

The filter-tipped cigarette of fig. 7 (second comparative example) has a cigarette Cm and a double filter similar to the filter-tipped cigarette of the first comparative example, but the amount of activated carbon particles contained in the charcoal-filtered CF' of the double filter is larger than the amount of activated carbon particles contained in the charcoal-filtered CF of the first comparative example.

The filter-tipped cigarette of fig. 8 (third comparative example) also has a cigarette Cm and a double filter having a charcoal filter CF' similar to the charcoal filter of the second comparative example and a flavor-generating element 32 similar to the above-described flavor-generating element.

Fig. 9 schematically shows a smoking pipe to be verified, except for the mouthpiece 40, to which the same cigarette Cm as in the first to third comparative examples is applied.

Table 1 below shows detailed specifications of the filter cigarettes and the verification objects of the first to third comparative examples.

[ Table 1]

	First comparative example	Second comparative example	Third comparative example	Authentication object
					Vf(％)	45	45	45	58
D(mm) Lf(mm)	1425	1427	1427	30 30
					Rf(mmH2O)	90	90	90	50
Rw(mmH2O)	100	100	100	100
					Qc(mg)	30	140	140	140
Qm(mg)	-	-	2.84	2.84

In Table 1, Vf, D, Lf, Rf, Rw, Qc, and Qm are as follows.

Vf: air permeability of filter tip

D: distance from suction inlet end of filter to perforated row

Lf: substantial length of filter

Rf: ventilation resistance of filter

Rw: ventilation resistance of filter-tipped cigarette as a whole

And Qc: adding amount of activated carbon particles

And Qm: adding amount of Mentholum

Smoking tests were conducted on the first to third comparative examples and the verification target, and the amounts of smoke components, vapor phase components, and menthol in mainstream smoke (mainstream smoke to be fed into the mouth of a smoker) fed from the inlet ends of the filter cigarette and the verification target smoking pipe of these comparative examples were measured. The measurement results are shown in table 2 below.

In table 2, the C/T is the C/T reduction rate Δ CT of the target of verification with respect to the first comparative example as a reference (0.00), and the delivery amounts of the vapor phase components are the delivery amount reduction rates Δ V of the second and third examples and the target of verification with respect to the first comparative example as a reference (0.00).

[ Table 2]

	First comparative example	Second comparative example	Third comparative example	Authentication object
						Tobacco component	Tar (mg)	6.40	6.47	[-]	6.51
Nicotine (mg)	0.58	0.56	[-]	0.64
						CO(mg)	9.17	9.12	[-]	6.29
C/T	1.43	1.41	[-]	0.97
						Composition of vapor phase	Delta CT acetaldehyde (GCarea)	0.002.14	[-]0.17	[-][-]	0.33 0.10
Acetone (GCarea)	1.26	0.03	[-]	0.06
						Benzene (GCarea)	0.31	0.01	[-]	0.01
Total amount (GCarea)	9.79	0.45	[-]	0.40
						ΔV	Acetaldehyde	0.00	0.92	0.74	0.95
Acetone (II)	0.00	0.98	0.78	0.95
						Benzene and its derivatives	0.00	0.97	0.77	0.96
Total amount of	0.00	0.95	0.76	0.96
						Amount of menthol delivered Qmd (mg)	0	0	0.015	0.68

In Table 2, the values of the vapor phase components were measured by gas chromatography.

The graphs of fig. 10 to 12 can be obtained from table 2. Fig. 10 shows the results of comparing the first comparative example with the test subjects with respect to the amounts of tar and CO to be delivered. As is clear from fig. 10, the amount of tar delivered is not considered to be greatly different between the first comparative example and the verification target, but the amount of CO delivered from the verification target is greatly reduced as compared with the first comparative example. This is considered to be caused by the mainstream smoke from the cigarette Cm being diluted more than the filter-tipped cigarette of the first comparative example in the case of the smoking tube to be verified.

Therefore, as shown in fig. 11, the C/T of the verification object is greatly improved as compared with the first comparative example. The results shown in fig. 10 and 11 are caused by the filter holder 10 as the smoking pipe to be verified having the above-described structure.

On the other hand, fig. 12 shows the result of comparing the third comparative example with the verification target with respect to the fed amount Qmd of menthol. As is clear from fig. 12, there is no difference in the added amount Qmd of menthol between the third comparative example and the verification target, but the delivery amount Qmd of the verification target is greatly increased from the delivery amount Qmd of the third comparative example. This is considered to be caused by the flavor generating element 32 being taken out from the blister pack or the airtight container and accommodated in the filter holder 10 just before the smoking test, unlike the case of the third comparative example. That is, in the case of the smoking pipe as the verification target, since the charcoal filter 26 and the flavor generating element 32 are adjacent to each other just before the smoking test is performed, the menthol of the flavor generating element 32 stored in the bubble pack or the airtight container is not adsorbed by the activated carbon of the charcoal filter 26, so that a large amount of menthol can be delivered from the smoking pipe as the verification target.

In contrast, in the case of the filter-tipped cigarette of the first comparative example, the charcoal filter CF' and the flavor generating element 32 are in a state of being adjacent to each other after being manufactured from the filter-tipped cigarette. Therefore, the menthol of the flavor generating element 32 is adsorbed by the activated carbon of the charcoal filter CF' during the period before the smoking test, so that the amount of menthol delivered from the filter cigarette is almost zero at the time of the smoking test.

The present invention is not limited to the first embodiment described above, and various modifications are possible.

The filter element holder 10 of the first embodiment may have a plurality of longitudinal grooves instead of the annular groove 42. These vertical grooves extend in the axial direction of the filter element holder 10, are arranged at intervals in the circumferential direction of the filter element holder 10, and have a width narrower than the fingers of the smoker. Vent holes are formed in the bottom of each longitudinal groove, and these vent holes communicate with the dilution chamber 18. Such a vent hole is not blocked by the fingers of the smoker when smoking, and the outside air can be reliably introduced into the dilution chamber 18.

The filter holder 10 of the first embodiment may house an adsorption type filter having a particulate adsorbent other than activated carbon particles or a general filter instead of the charcoal filter 26.

The filter holder 10 of the first embodiment may be configured to accommodate the charcoal filter 26 in the filter accommodating chamber 22. At this time, before smoking, the flavor generating element 32 is housed in the flavor containing chamber 24 of the filter holder 10. And the smoking tube of the first embodiment does not necessarily need to have the mouthpiece 40.

Fig. 13 shows a filter element holder 10 of a second embodiment.

The filter holder 10 of fig. 13 has an annular groove 42 provided to surround the upstream end of the filter housing chamber 22, and a plurality of vent holes 44 are formed in the bottom of the annular groove 42. At this time, the air outside during smoking is introduced into the upstream end of the charcoal filter 26 through the air vent 44 and the wrapping paper, and dilutes the mainstream smoke from the cigarette.

Fig. 14 shows a portion of a third embodiment filter element holder.

The filter element holder 10 of the third embodiment also has an adjustment ring 46. The adjustment ring 46 is made of synthetic resin and is fitted into the annular groove 42 of the tubular body 12. The adjustment ring 46 rotates around the circumference of the tubular body 12 and has a plurality of slits 48 corresponding to the vent holes 44 of the annular groove 42. These slits 48 extend in the circumferential direction of the adjustment ring 46 and have a length that is not completely blocked by the fingers of the smoker when smoking. The adjustment ring 46 can fully open, close, or adjust the opening degree of the breather hole 44 by its rotating operation. The upper half of fig. 14 shows a state in which the vent hole 44 is opened by the slit 48 of the adjustment ring 46, and the lower half of fig. 14 shows a state in which the vent hole 44 is closed by the adjustment ring 46.

Fig. 15 shows a portion of a fourth embodiment filter element holder 10.

The filter element holder 10 of the fourth embodiment also has an adjustment ring 50 that is different from the adjustment ring 46. The adjustment ring 50 is also made of synthetic resin and is fitted into the annular groove 44. The adjustment ring 50 is slidable in the axial direction of the tubular body 12. The sliding action of the adjustment ring 50 allows the vent hole 44 to open, close, or adjust the opening of the vent hole 44. The upper half of fig. 15 shows a state in which the vent hole 44 is opened by the adjustment ring 50, and the lower half of fig. 15 shows a state in which the vent hole 44 is closed by the adjustment ring 50.

The adjusting rings 46 and 50 can adjust the amount of air introduced into the dilution chamber 18 during smoking, and thus the ventilation of the filter element holder 10 can be easily changed.

Fig. 16 shows a filter element holder 10 according to a fifth embodiment.

The filter component holder 10 of the fifth embodiment has a tubular body 12 integrally formed with a mouthpiece 40. At this time, the flavor generating element 32 and the charcoal filter member 26 are sequentially housed in the tubular body 12 from the side of the insertion opening 14, similarly to the cigarette C.

As is apparent from fig. 16, the filter holder 10 of the fifth embodiment does not have the dilution chamber 18 between the cigarette C and the filter housing chamber 22, and has an annular chamber 51 instead of the dilution chamber 18. The annular chamber 51 forms the inner peripheral surface of the socket 14, and the annular groove 42 having the vent hole 44 is formed on the outer peripheral surface of the socket 14. When a cigarette C is inserted into the insertion opening 14, the annular chamber 51 can surround the end of the cigarette C. At this time, once the outside air introduced through the ventilation hole 44 flows into the annular chamber 51, the outside air flows into the end portion of the cigarette C from the annular chamber 51 through the wrapping paper of the cigarette C, and dilutes the mainstream smoke.

Fig. 17 shows a filter element holder 10 according to a sixth embodiment.

The filter holder 10 of the sixth embodiment includes a tobacco pipe 52 instead of the socket 14. Tobacco shreds as smoking materials are charged into the tobacco pipe 52, and mainstream smoke is generated by igniting the charged tobacco shreds. Mainstream smoke is delivered through the mouthpiece 40 into the mouth of the smoker. The filter element holder 10 is formed entirely of wood, or at least the tobacco pipe 52 is formed of synthetic resin having heat resistance.

Fig. 18 shows a filter element holder 10 according to a seventh embodiment.

The filter holder 10 of the seventh embodiment is provided with a split type tubular body having a main portion 12a and a sub portion 12 b. The main portion 12a has a socket portion 14 and a filter housing chamber 22, and the sub portion 12b has a fragrance housing chamber 24. The sub portion 12b is detachably joined to the downstream end of the main portion 12a from the outside.

Fig. 19 shows a filter element holder 10 according to an eighth embodiment.

The filter element holder 10 of the eighth embodiment also has a split type tubular body as in the case of the filter element holder of the seventh embodiment. At this time, the main portion 12a of the tubular body has a male screw 13 on the outer peripheral surface of the downstream end thereof, whereas the sub portion 12b of the tubular body has a female screw 15 on the inner peripheral surface of the upstream end thereof to be screwed with the male screw 13. Therefore, the main portion 12a and the sub portion 12b can be coupled to each other separately by screwing the male screw 13 into the female screw 15 of the sub portion 12 b.

In the case of the seventh and eighth embodiments, it is preferable that the sub-portion 12b be used as a mouthpiece. The sub-portion 12b preferably houses the flavor generating element 32 and is packaged in the form of a blister pack (see fig. 2) or an airtight container (see fig. 3).

Fig. 20 and 21 show a smoking pipe as a filter holder 10 according to a ninth embodiment.

The filter element holder 10 of the ninth embodiment has a separate type filter element holder 10, i.e., a tubular body, as in the case of the seventh and eighth embodiments. The tubular body has a main portion 12a and a sub-portion 12b which doubles as a mouthpiece. The sub portion 12b can be separately inserted in advance in the downstream end portion of the main portion 12a, being slidable in the axial direction of the main portion 12a with respect to the main portion 12 a. In this case, the flavor generating element 32 is housed in the sub-portion 12b in advance, and both ends of the sub-portion 12b are preferably sealed with seals 60a and 60b such as aluminum films. These seals 60 prevent the fragrance composition volatilized from the fragrance generating element 32 from escaping from the secondary portion 12b, and the blister pack or air-tight container form of packaging is not required for the secondary portion 12 b.

A partition wall 62 is formed in the main portion 12a, and the partition wall 62 is positioned between the filter accommodating chamber 22 of the main portion 12a and the sub portion 12 b. A hollow breaking needle 64 is integrally formed at the center of the partition wall 62. The breaking pin 64 is positioned concentrically with respect to the main portion 12a and protrudes toward the sub portion 12b, so that the filter housing chamber 22 and the housing chamber of the sub portion 12b communicate with each other. The breaking needle 64 has: an outer diameter slightly smaller than the inner diameter of the sub-portion 12b (the outer diameter of the fragrance generating element 32), and is provided to be in contact with the main portion

The portion 12 has an inner diameter of the same wall thickness and a tip that is tapered toward the front end of the secondary portion 12 b.

Before the smoking pipe of the ninth embodiment is used, the sub-portion 12b is in the state shown in FIG. 20. Before smoking, from this state the seal 60b at the outer end of the secondary section 12b is first peeled off and the secondary section 12b is then pushed into the primary section 12 a. Therefore, as shown in fig. 21, the seal 60a at the inner end of the sub-portion 12b is pierced by the tip of the breaking needle 64, the tip of the breaking needle 64 penetrates into the sub-portion 12b, and at this point, the charcoal filter part 26 and the flavor generating element 32 are connected to each other by the breaking needle 64.

Therefore, when smoking a cigarette using the smoking pipe in the state shown in fig. 21, the mainstream smoke that has passed through the charcoal filter 26 flows through the flavor generating element 32, and the aromatic component that has volatilized from the flavor generating element 32 is added to the mainstream smoke.

As described above, since the breaking needle 64 intrudes into the sub-portion 12b, a space for allowing the breaking needle 64 to intrude must be secured between the seal 60 on the inner end side of the sub-portion 12b and the flavor generating element 32. However, as can be understood from fig. 20 and 21, the above-described spaces may be respectively secured on both sides of the flavor generating element 32.

Fig. 22 shows a filter holder 10, i.e., a smoking pipe, according to a tenth embodiment.

The filter element holder 10 of the tenth embodiment has the same divided type filter element holder 10 as that of the ninth embodiment and the mouthpiece 66, and the mouthpiece 66 is attached to the outer end of the sub-portion 12b of the filter element holder 10 so as to be slidable in the axial direction of the filter element holder 10 with respect to the sub-portion 12 b. The mouthpiece 66 has a partition wall 68 and a breaking needle 70 in its interior, which are similar to the partition wall 62 and the breaking needle 64 of the main portion 12a, and the breaking needle 70 projects toward the sub portion 12 b.

The tenth embodiment is a case where the main portion 12a and the mouthpiece 66 are moved in a direction approaching each other before being used for smoking. At this time, the seals 60a, 60b on both sides of the secondary portion 12b are pierced by the breaking pins 64, 70. This time, peeling of the seal 60b is not required.

Fig. 23 shows a smoking pipe as the filter holder 10 of the eleventh embodiment.

The smoking pipe of the eleventh embodiment corresponds to the smoking pipe of the ninth embodiment (fig. 20 and 21) in which the partition wall 62 and the breakage pin 64 are removed. In this case, before the smoking pipe of fig. 23 is used for smoking, the seals 60a and 60b of the sub-portion 12b are peeled off.

Fig. 24 and 25 show a smoking pipe as a filter holder 10 according to a twelfth embodiment.

The smoking pipe of the twelfth embodiment is different from the smoking pipe of the ninth embodiment (fig. 20, 21) in the following point.

The smoking pipe of the eleventh embodiment includes, instead of the breakage pin 64, a plug 72, and the plug 72 has a tapered tip end projecting from the partition wall 62 toward the sub-portion 12 b. The partition wall 62 is formed with a plurality of communication holes 78, and these communication holes 78 are arranged outside the mandrel 72 at intervals in the circumferential direction of the mandrel 72. On the other hand, the sub-portion 12b has: instead of the inner end wall 74 of the seal 60a and a communication hole 76 formed in the center of the inner end wall 74. As shown in fig. 24, the mandrel 72 is inserted into the communication hole 76 of the sub-portion 12b to close the communication hole 76.

The smoking pipe of the twelfth embodiment is in the state shown in fig. 24 before use. Before the smoking pipe is to be used for smoking, as shown in fig. 25, when the sub-portion 12b is pulled out from the main portion 12a, the plug 76 is pulled out from the communication hole 76 of the sub-portion 12 b. Therefore, the fragrance generating element 32 in the sub-portion 12b is connected to the charcoal filter member 26 in the main portion 12a via the communication hole 76, the space between the partition wall 62 and the sub-portion 12b, and the communication hole 78. Therefore, the mainstream smoke after passing through the charcoal filter member 26 flows into the flavor generating element 32 in the sub-portion 12b, and at this time, the mainstream smoke is added with the aromatic component.

Fig. 26 shows a smoking pipe as the filter holder 10 of the thirteenth embodiment.

The smoking pipe of the thirteenth embodiment has: a filter component holder 10 similar to the filter component holder of fig. 24 and a mouthpiece 66 similar to the mouthpiece 66 of fig. 22. The mouthpiece 66 includes, instead of the break pin 70, a partition wall 68, a plug 80, and a communication hole 84, which are similar to the partition wall 62, the plug 72, and the communication hole 78, respectively, and the plug 80 protrudes toward the sub-portion 12 b. On the other hand, the sub-portion 12b has: instead of the outer end wall of the seal 60b and the communication hole 82 formed in the outer end wall. The core rod 80 is inserted into the communication hole 82 to close the communication hole 82.

In the case of the thirteenth embodiment smoking pipe, the secondary portion 12b is pulled out of the primary portion 12a and the mouthpiece 66 is pulled out of the secondary portion 12b before it is to be used for smoking. In this way, the plugs 72, 80 are pulled out from the corresponding communication holes 76, 82, respectively, to form a flow path connecting the charcoal filter member 26 and the flavor generating element 32.

Fig. 27 to 29 show a smoking pipe as a filter holder 10 of a fourteenth embodiment.

The smoking pipe of the fourteenth embodiment is different from the smoking pipe of the twelfth embodiment (fig. 24) in the following point.

The fourteenth embodiment is the case where the sub-portions 12a, 12b are inserted rotatably with respect to the main portion 12 a. The partition wall 62 of the main portion 12a has a large center hole 86 instead of the mandrel 72 and the communication hole 78. The inner peripheral edge of the central hole 86 is formed with four claws 88, and as is understood from fig. 28, these claws 88 are located at the four corners of the rectangle, respectively, and project toward the sub-section 12 b. A rectangular cover plate 90 is held between the claws 88, the cover plate 90 extending in a direction transverse to the central hole 86.

On the other hand, a rectangular hole 92 is formed at the inner end of the sub-portion 12b, and the hole 92 is smaller than the cover plate 90. As shown in fig. 27, when the smoking pipe is in a state before use, the hole 92 is in the same posture as the cover plate 90 (the horizontal posture shown by the two-dot chain line in fig. 28), and is closed by the cover plate 90.

When the sub-portion 12b is rotated by 90 ° with respect to the main portion 12a only about the axis of the sub-portion 12b after peeling off the seal 60b at the outer end of the sub-portion 12b before use for smoking, the hole 92 is changed to a posture orthogonal to the cover plate 90 (a vertical posture shown by a solid line in fig. 28). At this time, as shown in fig. 29, both ends of the hole 92 are shifted from the cover plate 90 to communicate with the center hole 86. As a result, a flow path connecting the charcoal filter part 26 and the flavor generating element 32 is formed.

Fig. 30 shows a filter holder 10, i.e., a smoking pipe, according to the fifteenth embodiment.

The smoking pipe of the fifteenth embodiment has: a filter component holder 10 of the fourteenth embodiment and a mouthpiece 66 corresponding to the mouthpiece of figure 26. The mouthpiece 66 is rotatably mounted relative to the secondary portion 12b with the partition wall 68 having a central aperture 94 and a detent 96 corresponding to the central aperture 86 and detent 88. The claws 96 hold a rectangular cover plate 98. The sub-portion 12b, on the other hand, has an outer end wall and a rectangular hole 100 formed in the outer end wall.

In the case of the smoking pipe of the fifteenth embodiment, when the sub-portion 12b and the mouthpiece 66 are rotated separately, a path connecting the charcoal filter part 26 and the flavor generating element 32 is formed.

Fig. 31 shows a paper filter element 26p that can be used in place of the charcoal filter element 26. The paper filter element 26p has a filter element formed of a thin paper into a rod shape and activated carbon particles distributed in the filter element, instead of a fiber bundle of acetate fibers.

In the interior of the smoking pipe shown in fig. 20 to 30, the charcoal filter 26 and the flavor generating element 32 coexist. However, before the smoking tube is used, the aroma component volatilized from the aroma generating element 32 is not released to the outside of the sub-section 12b because the aroma generating element 32 in the sub-section 12b is protected by the seals 60a, 60b or the plugs 72, 80 or the covers 90, 98.

The smoking pipes as the filter holder 10 shown in fig. 18 to 30 each have the annular groove 42 and the vent hole 44, but the annular groove 42 and the vent hole 44 may be omitted.

Claims (8)

1. A smoking pipe is provided with:

a tubular body including a retainer portion formed at one end portion thereof and capable of retaining a smokable material, an upstream chamber formed adjacent to the retainer portion within the tubular body as viewed in a flow direction of the mainstream smoke, and a downstream chamber secured downstream of the upstream chamber;

an adsorption-type filter member housed in the upstream chamber and configured to filter mainstream smoke of the smokable material;

a flavor generating element housed in the downstream chamber and generating a flavor to be added to the mainstream smoke;

a separating device for air-tightly separating the flavor generating element from the filter member during manufacture of the smoking pipe and allowing air to flow between the filter member and the flavor generating element before the smoking pipe is used.

2. The smoking pipe of claim 1,

the fume pipe is also provided with a dilution device,

the dilution device has a dilution chamber secured between the holder portion and the upstream chamber, in which the mainstream smoke is diluted with air.

3. The smoking pipe of claim 2,

the dilution device comprises:

a recess formed on an outer peripheral surface of the tubular body and not shielded by a user's finger even if the tubular body is held by the user's finger;

and a vent hole having one end opened to the recess and the other end opened to the inner peripheral surface of the tubular body in the dilution chamber.

4. The smoking pipe of claim 3,

the recess is an annular groove formed on the outer peripheral surface of the tubular body,

the vent hole is formed at the bottom of the annular groove.

5. The smoking pipe of claim 4,

the dilution device further includes an adjustment ring for adjusting the opening degree of the vent hole, the adjustment ring being disposed in the annular groove and being movable in one of a circumferential direction and an axial direction of the tubular body.

6. The smoking pipe of claim 1,

the holder portion has a cylindrical socket as an end portion for receiving a rod-shaped smoking article.

7. The smoking pipe of claim 1,

the tubular body comprises: a primary portion having the retainer portion and the upstream chamber and a secondary portion having the downstream chamber, the primary and secondary portions being separably joined.

8. The smoking pipe of claim 1,

the filter part is a charcoal filter part, and the flavor generating element is an element that volatilizes menthol.