JP6847847B2 - Manufacturing methods for smoking products, filters and smoking products - Google Patents

Description

Embodiments of the present invention relate to smoking products, filters and methods for producing smoking products.

The suction resistance of a smoked item is a measure of the pressure required to allow the smoke to pass through the smoked item at a particular rate. The smoking product can be configured by the manufacturing process so as to have a suction resistance in a predetermined range. The suction resistance of normally smoked products decreases with increased ventilation.

An embodiment of the present invention includes a first filter section and a second filter section in the first aspect, the second filter section having a filter structure located downstream of the first filter and ventilation into the first filter. Provided smoking products including a ventilation structure configured to allow the user to adjust the level, the resistance to the gas flowing through the entire length of the second filter section is less than the resistance to the gas flowing through the entire length of the first filter section, and the filter structure. The resistance to the gas flowing through the entire length of the is substantially constant even if the ventilation level changes.

The first filter section may have a first tow weight fibrous filter medium, the second filter section may have a second tow weight fibrous filter medium, and a first of the fibrous filter media. The tow weight of 2 is smaller than the weight of the first toe of the fibrous filter medium.

Pressure drop per unit length of the first filter section may be a 5mmH 2 O / _mm greater than the pressure drop per unit length of the second filter section may be less than 5mmH 2 O / _mm. The resistance to the gas flow through the second filter section may be 15 times less than the resistance to the gas flow through the first filter section.

The first filter section can be formed from a first homogeneous filter medium and the second filter section can be formed from a second homogeneous filter medium.

The second filter section may be separable from the first filter section and / or movable relative to the first filter section to regulate ventilation to the first filter section.

Smokers may further include a sleeve configured to move relative to the first filter section, the second filter section is secured within the sleeve, and the level of ventilation changes the position of the sleeve with respect to the first filter section. Can be changed by

The sleeve may be rotatable with respect to the first filter section and the ventilation level can be changed by varying the angular position of the sleeve with respect to the first filter section.

The length of the first filter section may be 5 to 25 mm, the length of the second filter section may be 5 to 25 mm, and / or the ventilation structure may be 6 mm to 35 mm from the mouth end of the smoked product. Ventilation air may be provided at the place.

The first and second filter sections may contain toe filaments, the first filter section being the second filter section being one of the toe weight, the number of toe filaments per unit volume, the cross section of the toe filaments and the degree of crimping. It may be different for one or more.

The second filter section may include at least one air passage extending longitudinally through its length.

The diameter of the air passage may be 1 to 7 mm.

The second filter section may include a fibrous filter medium formed with an annular end face.

The second filter section may be a tube made of fibrous filter media, and the air passage may extend along the central longitudinal axis through the length of the second filter section.

An embodiment of the present invention provides a method for producing a smoked product in a second aspect, wherein the method forms a first filter section having a first resistance to a gas flowing over its entire length and its entire length. Forming a separate second filter section with a second resistance to flowing gas and assembling the first filter section and the second filter section with one or more additional members to form a smoked product. Including, the second resistance to the gas flow is less than the first resistance to the gas flow, and the smoked product is configured to selectively allow a variable amount of air to enter.

Embodiments of the present invention will be described with reference to various accompanying drawings for the purpose of exemplification.

It is a longitudinal sectional view of a part of the smoking product according to the first embodiment of the present invention. It is a perspective view of the smoking product shown in FIG. FIG. 5 is a longitudinal sectional view of a part of a smoking product according to a second embodiment of the present invention. It is a perspective view of the smoking product shown in FIG. It is a graph which shows the relationship between the ventilation level of the smoking product of the conventional example and the smoking product according to the present invention, and the pressure drop (PD) of an open cigarette. FIG. 5 is a plan view of a blank forming a wrapper for a smoking product according to a third embodiment of the present invention. FIG. 5 is a plan view of a rod article to which the blank of FIG. 6a is attached to form a smoking product according to a third embodiment of the present invention. FIG. 5 is a plan view of a blank for forming a wrapper for a smoked product according to a fourth embodiment. It is a longitudinal sectional view of the smoking product according to the 4th embodiment. It is a schematic flow chart which shows the manufacturing method of a smoking product.

FIG. 1 illustrates the smoking product 10 according to the first embodiment. In this example, the smoking item 10 is a cigarette. However, other smoking materials can also be used, and the term smoking product is cigar or cigarillo, whether based on tobacco, tobacco derivatives, swollen tobacco, recycled tobacco or tobacco substitutes, and also fever but burns. It is used to mean products that do not (ie, products that produce flavor from the smoking material by applying heat without burning the smoking material), and aerosol-generating products such as electronic cigarettes. For convenience, these are referred to herein as "smoking goods".

Smoking items such as cigarettes and their formats are "regular" (usually in the range of 68-75 mm, eg about 68 mm-about 72 mm), "short" or "mini" (68 mm or less), depending on the length of the cigarette. , "King size" (usually 75-91 mm, eg about 79 mm-about 88 mm), "long" or "super king" (usually 91-105 mm, eg about 94 mm-about 101 mm) and "ultra-long" (usually About 110 mm to about 121 mm) and so on.

Depending on the circumference of the cigarette, "Regular" (about 23 to 25 mm), "Wide" (more than 25 mm), "Slim" (about 22 to 23 mm), "Demi Slim" (about 19 to 22 mm), "Super Slim" Named such as (about 16-19 mm) and "micro slim" (less than about 16 mm). Therefore, a king size, super slim format cigarette has, for example, a length of about 83 mm and a circumference of about 17 mm. Cigarettes in the regular king size format are preferred by many buyers, with a circumference of 23 to 25 mm and a total length of 75 to 91 mm.

Each format is manufactured with filters of different lengths, and short filters are usually used for short and small circumference formats. Usually, in the short regular format, the filter length is from 15 mm, and in the ultra long super slim format, it is up to 30 mm. Chipping paper is longer than the filter, for example 3-10 mm longer.

The smoking products and filters described below can be manufactured in any of the above formats. Smoking products can, for example, have a length of 70 to 100 mm and a circumference of 14 to 25 mm.

The terms "upstream" and "downstream" used herein are relative terms defined with respect to the direction of mainstream smoke (or other aerosol) that is drawn into the smoked product during use.

The smoking product 10 in the example of FIG. 1 includes a smoking material source such as cigarettes attached to a filter structure including a first filter section 12 and a second filter section 14. The smoking material source is in the form of a tobacco rod 11 and is attached to the first filter section 12. The second filter section 14 is located downstream of the first filter section 12 and the tobacco rod 11. The ventilation structure 17 allows the user to adjust the ventilation level into the first filter section 12 as described in detail below.

The resistance to the gas flowing over the entire length of the second filter section is smaller than the resistance to the gas flowing over the entire length of the first filter section, and the resistance to the gas flowing over the entire length of the filter structure is changed by the ventilation level. Also remains substantially constant. The small resistance of the second filter section 14 allows the first filter section 12 to have a greater effect on the overall resistance of the filter structure to the gas flow. Increasing ventilation within the second filter section 14 creates a low resistance path for the flow through the filter structure, thus significantly reducing the suction resistance experienced by the consumer when compared to low bell ventilation. .. Compared to the first filter section, the lower resistance of the second filter section 14 therefore increases the change in suction resistance experienced by the consumer when the ventilation is changed, and the great sensation that the ventilation has been changed by the consumer. Gives signs.

The smoking product 10 includes a first portion including a tobacco rod 11 and a first filter section. The tobacco rod 11 and the first filter section 12 are connected by a cover layer formed of chipping paper that secures the first filter section to the tobacco rod. The tobacco rod 11 and the first filter section 12 are referred to as tobacco units. The elongated tobacco rod 11 and the first filter section 12 define the longitudinal axis of the smoked product.

The second portion of the smoking product includes a second filter section 14 and a sleeve 13 that is movable relative to the first portion of the smoking product. The sleeve is in the form of a tube extending around the tobacco rod 11 and / or the first filter section 12. The tube may be cylindrical. The sleeve 13 is made of paper. The second filter section 14 is securely mounted and secured within the sleeve. The first and second filter sections 12 and 14, respectively, include a filter material packaged in paper, for example a sheet material which may be a plug wrapper. The first and second filter sections form a filter structure. The first filter section 12 is upstream of the second filter section 14. The second filter section 14 is located at the mouth end of the sleeve 13 adjacent to and away from the first filter section 12. Separately, the first and second filter sections are connected.

The tobacco rod 11 and the attached first filter section 12 are described as being connected by chipping paper (not shown). The chipping paper is a standard chipping paper or a relatively thick and recessed chipping paper or paperboard type chipping.

The smoking product 10 is provided with a ventilation structure 17 configured so that the ventilation of the smoking product 10 can be adjusted. The ventilation structure 17 includes one or more second ventilation regions 15 in the sleeve 13 upstream of the second filter section 14. The smoked product further comprises one or more first ventilation areas 16 around the first filter section 12. For example, the one or more first ventilation areas 16 are defined by a layer of sheet material around the first filter section or around the filter media of the first filter section. The ventilation structure 17 allows the ventilation air to enter the first filter section. The terms "upstream" and "downstream" refer to the direction in which smoke passes along the longitudinal axis of the smoker 10, i.e., "downstream" refers to the direction towards the mouthpiece end of the smoker 10. Represent.

Ventilation regions 15 and 16 are formed as ventilation openings or air permeable materials. In some embodiments, when the ventilation region 15 of the sleeve 13 is exposed, air can flow into the body of the smoking product 10. When the second ventilation area 15 of the sleeve 13 and the corresponding first ventilation area 16 around the first filter section 12 are aligned, air can flow into the body of the smoking product 10. Ventilation areas 15 and 16 are aligned by rotating the first portion of the smoked product with respect to the second portion. In particular, ventilation is regulated by rotating the sleeve 13 with respect to the first filter section 12. The ventilation structure 17 can selectively change the ventilation level by adjusting the degree of overlap between the second ventilation region 15 and the first ventilation region 16. The amount of ventilation depends on the effective ventilation area, which is determined by the overlapping area of the first and second ventilation areas. The ventilation level can be selected by selecting the position of the second portion with respect to the first portion, for example by rotating the second portion with respect to the first portion. Therefore, the ventilation structure 17 can change the size of the effective ventilation region, and can substantially change the amount of air taken up upstream of the second filter section.

The first filter section 12 and the second filter section 14 are made of known filter media. The filter media in both filter sections may be tow, for example cellulose acetate tow. The filter media in the first filter section is homogeneous, and separately the filter media in the second filter section is homogeneous. The term "homogeneous" means that the filter media is substantially uniform throughout each filter section, especially longitudinally and / or radially through each of the first and second filter sections 12, 14. Used for. At least one physical characteristic of the homogeneous first filter section is different from the homogeneous second filter section.

The first filter section 12 provides a first resistance to the gas flowing through its entire length. The resistance to the gas flowing through the entire length of the first filter section is determined by the filter material of the first filter section. The resistance to gas flow represents the pressure required to aspirate smoke through the length of the filter section 12 at a particular velocity. The term "pressure drop" can be used in place of "gas flow resistance". The pressure drop is expressed in units of distance and height of water (mmH ₂ O). The first filter section has a first pressure drop per unit length or gas flow resistance per unit length, which is constant in the longitudinal direction through the first filter section 12. The pressure drop per unit length is expressed in millimeters, ie mmH ₂ O / mm. The first pressure drop per unit length is determined by the filter material in the first filter section.

The second filter section 14 provides a second resistance to the gas flowing through its entire length. The resistance to the gas flowing through the entire length of the second filter section is determined by the filter material of the second filter section. The resistance to the gas flowing through the entire length of the second filter section determines the second pressure drop. The resistance to a second pressure drop or gas flow represents the pressure required to aspirate smoke through the length of the filter section 14 at a particular velocity. The second gas flow resistance (or pressure drop) per unit length is substantially constant in the longitudinal direction through the second filter section 14. The second filter section 14 may be considered to include a filter medium having a second pressure drop per unit length.

In the aspect of the present invention, the resistance to the gas flowing through the entire length of the first filter section 12 is greater than the resistance to the gas flowing through the entire length of the second filter section 14. In another aspect, the toe weight of the second filter section 14 is less than the toe weight of the first filter section 12. The second density provided by the second filter section 14 is smaller than the first density provided by the first filter section 12. Optionally, the first pressure drop across the first filter section 12 is greater than the second pressure drop across the second filter section 14.

One or more ventilation areas 15, 16 that allow selective ventilation are upstream of the second filter section 14. The relatively low suction resistance over the entire length of the filter structure downstream of the ventilation region 15 provides a large ventilation to the overall suction resistance from the mouth end of the smoking product 10 when the ventilation is changed.

The ventilation structure 17 is located substantially upstream of the second filter section 14. Ventilation of the smoking product 10 reduces the suction resistance from the mouth end of the smoking product 10. The ingress of ventilated air reduces the volume of air drawn in through the length of the smoked product upstream of the ventilated area and reduces the amount of air that feels gas flow resistance upstream of the ventilated area. Ventilated air enters directly with virtually no resistance, thus reducing overall suction resistance. In particular, the air entering through the ventilation area 15 reduces the effect of resistance on the gas flowing through the section of smoked goods upstream of the ventilation area 15. The effect of resistance to the gas flowing through the smoking product 10 downstream of the ventilation region 15 is not altered by changes in ventilation.

The relatively low gas flow resistance provided by the low density of the second filter section 14 downstream of the ventilation region 15 (relative to the first filter section 12) defines most of the resistance to gas flowing across the entire length of the filter structure. Apart from this, the second filter section 14 makes a relatively small contribution to the overall suction resistance from the mouthpiece end of the smoker 10. In contrast, the contribution of one or more sections upstream of the ventilation area 15 to the overall suction resistance is significant. The ingress of air reduces the effect of pressure drop or resistance on the gas flow flowing only in the upstream section, and the low gas flow resistance or downstream section of the pressure drop is unaffected by ventilation. Therefore, the overall suction resistance from the mouth end of the relatively majority of the smoking product 10 is not affected by the change in ventilation of the smoking product 10. The small density of the second filter section 14 downstream of the ventilation area 15 increases the proportion of suction resistance affected by changes in ventilation of the smoker 10. The small density of the second filter section 15 increases the effect of increased ventilation on the overall suction resistance from the mouth end of the smoker 10.

When the ventilation level is changed, the suction resistance from the mouth end of the smoking product 10 also changes. As the amount of ventilated air entering the smoking item 10 increases, the overall suction resistance decreases. A relatively low pressure drop or resistance to the gas flowing through the second filter section 14 (eg, obtained by a relatively low density filter material) will result in a relatively large change in overall suction resistance due to increased ventilation levels. .. Therefore, when the level of ventilation is changed in a range that can be selected by the user, the suction resistance from the mouthpiece end of the smoking product 10 changes over a relatively wide range due to the low density of the second filter section 14. Therefore, the change in suction resistance from the mouth end of the smoked product is doubled when the ventilation is changed. This makes it more perceptual to the user that the ventilation level has been changed.

In some examples of the invention, the second filter section has a pressure drop of a unit length of less than _{5 mmH 2 O / mm.} Separately, the second filter section has a unit length less than the value selected from 4 _{mmH 2} O / mm, 3 mmH ₂ O / mm, ₂ mmH 2 O / mm, 1.5 mmH ₂ O / mm and 1 mmH _{2 O / mm.} Has a per-pressure drop.

In some examples of the invention, the first filter section has a pressure drop per unit length greater than _{5 mmH 2 O / mm.} Separately, the first filter section is 6 mmH ₂ O / mm, 7 mmH ₂ O / mm, 8 mmH ₂ O / mm, 9 mmH ₂ O / mm, 10 mmH ₂ O / mm, 11 mmH ₂ O / mm and 12 mmH ₂ O / mm. Has a pressure drop per unit length greater than the value selected from.

In some embodiments, the pressure drop per unit length of the second filter section is 1-5 mmH ₂ O / mm and the pressure drop per unit length of the first filter section is 5-15 mmH ₂ O / mm. .. In some embodiments, the pressure drop per unit length of the second filter section is _{less than 5 mmH 2} O / mm and the pressure drop per unit length of the first filter section is more than 5 mmH ₂ O / mm. The upstream filter section has a pressure drop per unit length that is higher than the pressure drop per unit length of the downstream filter section. The upstream filter section has a pressure drop per unit length higher than any of the specific values exemplified, and the downstream filter section has a pressure drop per unit length lower than any of the specific values exemplified.

In some examples, the resistance to gas flowing over the entire length of the second filter section is at least 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 times the first filter. Smaller than a section.

For example, the resistance to the gas flowing over the entire length of the second filter section is 2 to 15 times smaller than the resistance to the gas flowing over the entire length of the first filter section. Optionally, the second pressure drop per unit length of the second filter section is 5 to 12 times smaller than the first pressure drop per unit length of the first filter section.

In some embodiments, the ventilation structure 17 is located at the downstream end of the first filter section 12. In some examples, the ventilation structure is located less than 10 mm from the downstream end of the first filter section 12.

The pressure drop per unit length of the first and second filter sections is (at least partially) determined by the physical structure of the filter media forming these filter sections. Both the first and second filter sections may contain fibrous materials containing tow filaments. For filters containing tow filaments, the pressure drop per unit length can be measured by the amount or number of tow filaments in a particular volume or length. Tow weight is a measure of the amount of tow fiber in a particular volume. The pressure drop per unit length can also be determined by the cross section of the toe filament. For example, the toe filament may have an X-shaped cross section or a Y-shaped cross section. The cross section also affects the pressure drop per unit length. The toe weight can represent the density of the fibrous material in the filter section. The pressure drop per unit length can be determined by the amount or degree of crimping (ie, bending) of the filament during the manufacturing process. These factors that affect the pressure drop per unit length of the filter section are known and should be selected to individually obtain the required pressure drop per unit length for each of the first and second filter sections. Is possible. Thus, the first and second filter sections include filter media having physical properties determined by any one or more different selections of the above properties. The first and second filter sections use filter media formed or treated to have the required properties of providing different pressure drops per unit length to the first and second filter sections, eg, as described above. Is manufactured.

FIG. 2 is a perspective view of a portion of the smoking product 10 illustrated in FIG. As shown in FIG. 2, the tobacco rod 11 and the first filter section 12 are sized to rotate as a unit around the longitudinal axis in the sleeve 13. The limiting means (not shown) maintains the first and second portions in a longitudinally fixed configuration to prevent the smoking product 10 from stretching. Therefore, the first part cannot slide longitudinally with respect to the second part, i.e. the sleeve cannot move longitudinally with respect to the cigarette unit.

The ventilation level can be selected by selecting the angular position of the sleeve 13 with respect to the first filter section 12.

In some examples, the ventilation area 15 is configured to increase in size non-linearly with respect to the angular position. The ventilation area 15 is configured such that the ventilation level has a substantially linear dependence on the angular position of the sleeve 13 with respect to the first filter section 12.

In some embodiments, the one or more ventilation areas 15 maintain a fixed longitudinal position with respect to the first and second filter sections as the sleeve 13 is rotated relative to the first filter section 12.

In this embodiment, the second filter section 14 is firmly mounted and secured within the sleeve 13. The rotation of the second filter section 14 causes the corresponding rotation of the sleeve 13 with respect to the first filter section 12.

By selecting different angular positions of the second filter section 14 with respect to the first filter section 12, the alignment between the ventilation area 15 of the sleeve 13 and the ventilation area 16 of the sheet material or plug wrapper of the first filter section 12 is aligned. It can be selectively increased or decreased. Therefore, the ventilation level of the smoking product 10 can be increased or decreased.

FIG. 3 is a longitudinal sectional view of a part of the smoking product according to the second embodiment of the present invention. The overall layout is similar to the examples in FIGS. 1 and 2 described above, the same parts are given the same reference numbers, and the parts other than the parts described below are unchanged.

In the embodiment of FIG. 3, the second filter section 24 is formed to have an air passage 28 passing through the center thereof in the longitudinal direction. The second filter section 24 and the air passage 28 form a tubular filter section extending along the longitudinal axis of the smoker 20. The second filter section 24 is formed of a fibrous filter medium having an annular cross section. Separately, the air passage 28 may pass longitudinally through the second filter section along a non-central path. Optionally, the second filter section may be formed to have a plurality of air passages passing through it longitudinally.

The air passage 28 reduces the resistance to the flowing gas over the entire length of the second filter section 24. The resistance to the gas flowing over the entire length of the second filter section 24 is smaller than the resistance to the gas flowing through the entire length of the first filter section 12.

The dimensions of the second filter section 24 depend on various factors such as the desired suction resistance of the second filter section 24 to the first filter section 12, the properties of the filter toe and the amount of plasticizer such as triacetin added to the filter toe. To do. However, in the examples herein, the outer circumference of the second filter section is 15-25 mm, for example 22 mm-25 mm or 23.95 mm. The inner diameter of the air passage 28 is preferably 1 mm to 7 mm, for example, 3 mm to 6 mm or 4.8 mm.

FIG. 4 is a perspective view of the smoking product illustrated in FIG. As illustrated in FIG. 4, the air passage 28 is located so as to pass through the center of the second filter section 24 in the longitudinal direction. Separately, the air passage 28 may travel longitudinally along a non-centrally located path through the second filter section 25. Optionally, the second filter section 24 may be formed to have a plurality of air passages through it in the longitudinal direction.

Table 1 below shows the calculated value of the suction resistance from the mouth end of the conventional "smoking product 1" compared with the calculated value of the suction resistance from the mouth end of the exemplary "smoking product 2" according to the example of the present invention. ing. Each smoking item has a filter with a total length of 27 mm, and a variable ventilation system allows air to enter at a distance of 16.5 mm from the mouth end of the filter. The filter is formed from first and second filter sections that are axially aligned. The length of the mouthpiece end filter section (second filter section) is 8 mm, and the length of the tobacco end filter section (first filter section) is 19 mm. Both smoking article has the same tobacco rod resistance to draw of 43.43mmH ₂ O (pressure drop).

The conventional filter of Smoker 1 provides both the first and second filter sections with a substantially uniform pressure drop per unit length _{of about 5 mmH 2 O / mm.} The pressure drop in the first filter section with a length of 19 mm is 85 mmH ₂ O and the pressure drop in the second filter section with a length of 8 mm is 40 mmH ₂ O.

In the example of smoking product 2 according to the present invention, the second filter is an 8 mm filter section at the mouthpiece of the filter and has a pressure drop of _{8 mmH 2 O.} It provides a relatively low pressure drop per unit length of 1 mmH _{2 O / mm.} The first filter section upstream has a length of 19 mm adjacent to the tobacco rod and has a relatively high pressure drop per unit length. It provides a pressure drop per unit length of 7.11 mmH _{2 O / mm.}

The pressure drop of the entire smoking product (including the tobacco rod) is determined for the ventilation value with a ventilation level of 40% -80%. In the case of the conventional smoking product 1, the pressure drop changes with _{132.27 to 96.11 mmH 2 O ventilation as the ventilation increases.} However, the pressure drop in the same ventilation range in smoking article 2 according to the present invention changes to 92MmH ₂ O from 139.22mmH ₂ O. Therefore, 47.22mmH ₂ O drop served by the present invention as compared to just 36.16mmH2O conventional smoking article increases the changes in pressure drop changing the ventilation of the smoking article (i.e., from the mouth end The suction resistance of is more variable). These results are shown in FIG. 5, where the y-axis shows the pressure drop and the x-axis shows the ventilation ratio.

In some embodiments, the pressure drop downstream of the ventilation structure 17 is further reduced by reducing the distance between the mouthpiece of the smoked product and one or more ventilation areas.

In some examples of the present invention, the ventilation area allows air to enter at a distance of less than 15 mm from the mouthpiece end. Apart from this, the distance from the mouth end of the ventilation area is less than the value selected from 14 mm, 13 mm, 12 mm, 11 mm and 10 mm.

FIG. 6a is a plan view of the blank 30 forming the wrapper for the smoked product according to the third embodiment of the present invention. FIG. 6b is a plan view of a rod article 32 to which the blank 30 of FIG. 6a is attached to form a smoking product. The smoking product containing the blank 30 has substantially the same function as described above. Unless otherwise stated, the features have the same structure and function.

The blank 30 is configured to be wound around the entire circumference of the rod article 32 only twice. The blank 30 is configured to define two complete layers extending around the roller article 32 and includes a region defining an inner layer and an outer layer.

The blank 30 includes an adjusting member 34 that is movable within a groove 36 that is configured to regulate ventilation and limit movement.

The adjusting member 34 can move in the circumferential direction within a limited range. The adjusting member 34 is movable between the first engaging surface and the second engaging surface. The first engaging surface and the second engaging surface define a groove 36 extending in the circumferential direction in which the adjusting member 34 can move.

The adjusting member 34 defines the first and second limiting surfaces 34a and 34b at the edge portion of the adjusting member in the moving direction, that is, the circumferential edge portion of the adjusting member 34. The contact of the first and second limiting surfaces 34a, 34b of the adjusting member 34 between the first engaging surface and the second engaging surface limits the relative rotation between the first and second portions of the smoked product. ..

The first and second limiting surfaces 34a, 34b extend at an angle to the longitudinal axis of the smoked product. The first and second engaging surfaces also extend at an angle to the longitudinal axis of the smoked product and / or to the moving axis of the adjusting part. The first and second engaging surfaces extend at the same angle and / or have a shape complementary to the first and second limiting surfaces 34a, 34b.

The blank 30 includes first and second spacer sections 38a, 38b. The first and second spacer sections 38a, 38b are configured to attach directly to and surround the rod article. The first and second spacer sections 38a, 38b have a function of spacing a plurality of arbitrary split feed surfaces at a correct radial distance so that the split feed can be performed. The first and second spacer sections 38a, 38b are spaced in the longitudinal direction.

The adjusting member 34 is configured to directly overlap one of the spacer sections 38a and 38b. The adjusting member is movable on the spacer section 38a, which provides a substantially smooth outer surface for the adjusting member to move easily.

Referring to FIG. 6b, rod article 32 includes a tobacco rod 11 similar to that described above and first and second filter sections 40, 42 downstream of the tobacco rod 11. The second filter section 42 is provided at the mouth end of the smoked product as a tubular section substantially similar to the second filter section 24 described in the second embodiment downstream of the first filter section 40 and the tobacco rod 11. Tobacco. The first filter section 40 is provided between the second filter section 42 and the tobacco rod 11. When the blank 30 is wound around the rod article 32, the adjusting member 34 is spaced from the first filter section 40 by the spacer section. The first filter section 40 optionally defines the first split feed surface 40a and therefore does not provide a smooth surface for the adjusting member.

The first and second spacer sections 38a, 38b are optionally connected to the spacer connection 44. The first and second spacer sections 38a, 38b extend circumferentially over the two layers of the blank 30. The spacer connection 44 is adjacent to the leading edge of the first blank 30, i.e., on the blank 30 that is first wound around the rod article 32.

The regions adjacent to the spacer connecting portion 44 and the spacer sections 38a, 38b in the longitudinal direction are first fixed to the rod article 50, for example, with an adhesive in order to start winding the first blank 30. The spacer connection 44 is to have a single initial attachment area to the blank 30 rod article 32. The spacer sections 38a, 38b are not fixed as independent long sheet material sections that require a separate attachment to the rod article 32. Therefore, the connection of the leading edges of the spacer sections 38a, 38 improves the initial attachment of the blank 30 to the rod article.

The spacer connecting portion 44 has a trailing edge portion 44a at an end portion of the spacer connecting portion 44 facing the leading edge portion in the circumferential direction. The trailing edge 44a of the spacer connection extends between the first and second spacer sections 38a, 38b. The trailing edge 44a of the spacer connection extends at an angle to the longitudinal axis of the smoked product.

The adjusting member 34 is formed in the support section 46 of the blank 1401. The adjusting member 34 defines the farthest region in the longitudinal direction of the section to which the adjusting member is attached. Therefore, the first and second limiting surfaces 34a, 34b of the adjusting member 34 extend longitudinally beyond the section to which the adjusting member is attached. The support section 44 is attached to the first and second spacer sections by a fragile connection. The fragile connection is the perforation line that extends in the circumferential direction. The support section 46 extends once around the entire circumference of the smoked product, for example to form a tube. The adjusting member is curved as part of its tube.

The support section 46 optionally supports the second split feed surface 48. In particular, the second split feed surface includes a pawl 48 formed on the pawl unit 50 selectively attached to the support section 46. The pawl 48 extends between the first and second spacer sections 38a, 38b and is configured to engage with any first split feed surface 40a.

The support section 46 includes a support section leading edge 46a. The support section leading edge 46a defines the first location of the support section 46 that is first wound around the rod article 32. The leading edge 46a of the support section extends at an angle to the longitudinal axis of the smoked product.

The trailing edge 46b of the support section 46 extends substantially parallel to the longitudinal axis of the smoked product.

The trailing edge 44a of the spacer connection, the leading edge 46a of the support section and the first and second spacer sections 38a, 38b define the opening 52 of the blank 30. The opening 52 provides a space for the support section 46 to move.

In some examples, the opening 52 has a circumferential range that is greater than the circumferential range of movement of the adjusting member 34. Therefore, the trailing edge portion 44a of the spacer connecting portion does not determine the moving range of the adjusting member 34.

For example, the region of the blank 30 forming the inner layer of the first spacer section 38a includes the ventilation region 54. In some examples, the ventilation area 54 includes one opening. Separately, the ventilation area 54 includes a plurality of discontinuous permeable areas or openings. For example, the openings are formed by electroporation (EP).

The adjusting member 34 has an additional function in regulating the ventilation of the smoked product. In particular, the adjusting member 34 directly regulates the ventilation of the smoked product by selectively covering one or more ventilation areas. The adjusting member 34 is radially adjacent and is configured to be movable over one or more ventilation areas of a portion integrally formed with the smoked product. The adjusting member 34 is made of a material that is substantially air-impermeable, particularly air-impermeable paper. The adjusting member 34 is configured to cover one or more ventilations of the smoking item so that the ventilated air cannot enter the smoking item through the area covered by the adjusting member 34. The adjusting member is air impermeable between the first and second limiting surfaces 34a, 34b. The first and second limiting surfaces 34a, 34b define rotation limits and define the amount of ventilation area covered or uncovered.

Therefore, the adjusting member 34 directly regulates the ventilation level by covering a part of the ventilation area, and limits the relative movement of the first and second parts of the smoked product between the maximum and minimum levels of ventilation. Has a function.

In some embodiments, the smoking product comprises another ventilation area 56. For example, the first filter section 40 includes another ventilation area 56 thereof. The ventilation area 54 is arranged so as to at least partially coincide with this other ventilation area 56. This separate ventilation area 56 includes, for example, a plurality of discontinuous ventilation areas or openings within a line extending in the circumferential direction. This separate ventilation area 56 can be formed by a laser. Usually, one or more of the ventilation areas 54, 56 includes a plurality of discontinuous ventilation areas or openings.

FIG. 7a is a plan view of the blank 60 forming the wrapper for the smoked product according to the fourth embodiment. FIG. 7b is a longitudinal sectional view of the smoking product 62 to which the blank 60 of FIG. 7a is attached. The smoking product 62 including the blank 60 has substantially the same function as that described above. Unless otherwise stated, the features have the same structure and function.

With reference to FIG. 7b, the rod article 62 includes a tobacco rod 11 similar to that described above and first and second filter sections 12 and 14 downstream of the tobacco rod 11. The second filter section 14 is provided at the mouth end of the smoking product on the downstream side of the first filter section 12 and the tobacco rod 11. The first filter section 12 is provided between the second filter section 14 and the tobacco rod 11. The first filter section 12 is divided into a first part 12'and a second part 12'' by a notch 12''', and the first part 12'of the first filter section 12 moves with respect to the second part 12''. You can do it.

The blank 60 is configured to be wound around the entire circumference of the rod article 62 twice, in this example only twice. The blank 60 has a first section 60a around which the rod article 62 forming the inner layer is wound first and a second section 60b around which the first section 60a forming the outer layer is wound next. The blank 60 is therefore configured to define two complete layers that extend around the rod article 62 and includes areas 60a, 60b that define the inner and outer layers.

The first section 60a of the blank 60 is connected to the second filter section 14 and the first part 12'of the first filter section 12, and thus connects the second filter section 14 and the first part 12'of the first filter section 12. Includes first end 60a'. The first section 60a of the blank 60 also includes a second end 60a ″ connected to a second portion 12 ″ of the first filter section 12. The second section 60b of the blank 60 is divided into a first portion 60b ′ and a second portion 60b ″ by a notch 61.

The blank 60 includes an adjusting member 64 in the first section 60a that is movable within a circumferentially extending groove 66 that is configured to regulate ventilation and limit movement.

The adjusting member 64 can move in the circumferential direction within a limited range. The adjusting member 64 is movable between the first engaging surface and the second engaging surface. The first engaging surface and the second engaging surface define a groove 66 extending in the circumferential direction in which the adjusting member can move.

The adjusting member 64 defines the first and second limiting surfaces 64a and 64b at the edge portion of the adjusting member in the moving direction, that is, at the peripheral edge portion of the adjusting member 64. The first and second parts of the smoking product are separated by the contact between the first engaging surface and the second engaging surface of the groove 66 extending in the circumferential direction and the first and second limiting surfaces 64a and 64b of the adjusting member 64. Limit the relative rotation of.

The first and second limiting surfaces 64a, 64b extend at an angle with respect to the longitudinal axis of the smoked product. The first and second engaging surfaces also extend at an angle to the longitudinal axis of the smoked product and / or to the moving axis of the adjusting part. The first and second engaging surfaces extend at the same angle and have a shape complementary to the first and second limiting surfaces 64a, 64b.

The structure 65 that limits longitudinal movement includes a slide member 67 that is configured to move between the first and second limiting members 68a and 68b. The slide member 67 is attached to the first and second limiting members 68a and 68b by a fragile connection. The fragile connection is the perforation line that extends in the circumferential direction. The portion of the blank including the slide member 67, the adjusting member 64, the first and second limiting members 68a and 68b and the groove 66 extending in the circumferential direction extends once around the entire circumference of the smoked product to form, for example, a pipe. The slide member 67 is attached to the first portion 60b'of the second section 60b of the blank 60 together with the first portion 60a'of the first section 60a of the blank, and thus with the second portion 60a'' of the first section 60a of the blank 60. It moves with respect to the second portion 12'' of the first filter section 12 with the first portion 60a'of the first section 60a, the second filter section 14 and the first portion 12'of the first filter section 12.

The second section 60b of the blank 60 forming the outer layer includes the ventilation area 69'at the blank position 69. In some examples, the ventilation area 69'contains one opening. Separately, the ventilation area 69'includes a plurality of discontinuous permeable areas or openings. For example, the openings are formed by electroporation (EP). The ventilation area 69'is arranged so that the blank 60 is aligned with the groove 66 when wound around the rod article 62.

The adjusting member 64 has an additional function in regulating the ventilation of the smoked product. In particular, the adjusting member 64 directly regulates the ventilation of the smoked product by selectively covering one or more ventilation areas. The adjusting member 64 is radially adjacent and is configured to be movable over one or more ventilation areas of a portion integrally formed with the smoked product. The adjusting member 64 is made of a material that is substantially air-impermeable, particularly air-impermeable paper. The adjusting member 64 is configured to move between the ventilation area 69'of the smoking item and the rod article 62 below it so that the ventilation air cannot enter the smoking item through the groove 66 blocked by the adjusting member 64. Has been done. The adjusting member is impermeable to air between the first and second limiting surfaces 64a, 64b. The first and second limiting surfaces 64a, 64b define rotation limits and define the amount of ventilation area covered or uncovered.

Therefore, the adjusting member 64 directly regulates the ventilation level by covering a part of the ventilation area, and limits the relative movement of the first and second parts of the smoked product between the maximum and minimum levels of ventilation. Has a function.

In some embodiments, the first filter section 12 comprises a plant particle-shaped flavoring agent. However, the first filter section 12 is a tobacco such as one or more capsules, a filament filled with a flavoring agent, a flavoring agent dispersed in a filter tow, particles impregnated with the flavoring agent, or a sheet material containing the flavoring agent. It may contain flavoring agents in the form of, which are located upstream of the ventilation area 69'. The ventilation level of the smoking product 10 adjusts the dilution by air entering the smoking product 10 through the ventilation region 69'of the smoke passing through the first portion of the smoking product 10. Therefore, the ventilation level controls the dilution of the flavored smoke that has passed through the flavoring agent by the unflavored air entering the smoked product through the ventilation area 69'. Therefore, the amount of flavor of the smoked product can be increased or decreased.

In some embodiments, the blank 60 includes another ventilation area (not shown) at position 63 of the blank downstream of the variable ventilation structure 69'. This separate ventilation area includes, for example, a plurality of discontinuous ventilation areas or openings within a line extending in the circumferential direction. This separate ventilation area can be formed by laser. Generally, one or more of the ventilation areas includes a plurality of discontinuous ventilation areas or openings. This separate ventilation area provides a constant minimum ventilation level that is unaffected by a variable amount of ventilation from the ventilation area 69'. The amount of ventilation provided by this separate ventilation area can be predetermined during the manufacture of the smoke product 10, eg, smoke and / or emitted by the smoke product passing through the filter section when the variable ventilation is at a minimum level. 5% to 50% of the amount of other aerosols. Variable ventilation structures 69', 66 are a partial range within the range of 0% to 90% of the amount of smoke and / or other aerosols emitted by smokers passing through the filter section, for example with 0% to 50% ventilation. It can be arranged within to provide user-adjustable ventilation.

FIG. 8 schematically shows a method 100 for producing a smoking product according to the present invention. Manufacturing Method Method 100 comprises forming a first filter section having a first resistance or pressure drop to a gas stream (step 110). The first filter section is formed of a known filter medium, such as cellulose acetate tow. A second filter section is made separately (step 120). The second filter section is also formed from cellulose acetate tow. The resistance to the gas flowing over the entire length of the second filter section is less than the suction resistance over the entire length of the first filter section. Optionally, the pressure drop in the second filter section is smaller than the pressure drop in the first filter section.

The different pressure drop characteristics of the first and second filter sections can be determined during the manufacture of the first and second filter sections. In some embodiments, the fibrous filter material, or tow element, has a different configuration in the first and second filter sections. For example, the second filter section is more compressed than the first filter section to obtain different properties (ie, lower density) and is formed to have different cross sections with toes of different radii. The pressure drop characteristics of the first and second filter sections are substantially unchanged and not denatured during use of the smoked product.

In some embodiments, the second filter section is formed with an annular cross section to obtain low density. The first and second filter sections are made of the same fibrous filter media and are formed to have different cross sections to obtain different properties. In some examples, the filter structure is formed from a single piece containing a first filter section and a second filter section.

The first filter section and the second filter section are assembled with one or more additional members to form a filter structure for smoked products (step 130). The first and second filter sections may be longitudinally aligned with the smoking material source. Any known filter blank material can be added to the smoking product. Examples of additional filter members include a third filter section, such as a filter section containing a granular material (eg carbon, active charcoal) or an additional hollow section. The first and / or second filter sections may each be considered as containing one or more discontinuous filter sections. These filter sections may usually be considered upstream and downstream of the variable ventilation area. These one or more upstream filter sections have higher resistance to gas flow than one or more downstream filter sections.

Packaging material is affixed to the smoking assembly to attach the components. The paper wrapping material is chipping paper. In addition, the sleeve is wrapped around the smoking item. The sleeve is configured to move relative to the first filter section and is selectively secured to the second filter section.

Smokers are configured to allow a selectively variable amount of air to enter upstream of the second filter section. For example, ventilation openings are formed in the outermost layer of the paper wrapper and / or in the paper sleeve. Ventilation openings are formed by mechanical cutting tools or lasers. Ventilation openings are formed in the packaging material before assembling the smoked product (ie, pre-drilled openings) or optionally during assembling the smoked product.

Ventilation was explained by entering smoking items, especially the first filter section, upstream of the second filter section. Separately, ventilation may, for example, enter at least part of the second filter section adjacent to the upstream end of the second filter section. Ventilation positions for air entry, including both upstream of the second filter section and optionally the upstream portion of the second filter section (eg 1/4 upstream), shall be located substantially upstream of the second filter section. ..

The characteristics of the filter section are defined in terms of pressure drop per unit length, resistance to gas flow per unit length, pressure drop, resistance to gas flow, tow weight or density. The filter section can be defined in terms of filter media that has resistance to gas flow that can be considered independent of the length of the filter section.

Smokers may include one or more areas of ventilation that provide a reference level of ventilation. Such ventilation areas (not shown) cannot be resized.

In order to deal with various problems and develop technology, the entire disclosure illustrates various embodiments, in which the claimed inventions are practiced to provide excellent smoking products. Can be done. The advantages and features of the present disclosure are merely representative examples of embodiments and are neither comprehensive nor exclusive. These are provided merely as an aid to the understanding and teaching of the claimed features. Of course, the advantages, embodiments, examples, functions, features, structures, and / or other aspects of the present disclosure limit the disclosure as set forth in the claims or are equivalents of the claims. It should not be considered to be limited to, and it should be considered that other embodiments may be used or modified without departing from the scope and / or ideas of the present disclosure. Various embodiments may appropriately include, be composed of, or are essentially composed of the disclosed components, components, features, parts, processes, means and other combinations. The present disclosure also includes other inventions that are not currently claimed but may be claimed in the future.

Claims (16)

It includes a first filter section and a second filter section, and the second filter section has a filter structure located downstream of the first filter section.
Ventilation level into the first filter section a smoking article by the user; and a ventilation structure configured to be adjusted, this smoking article includes a first portion and a second portion, the ventilation level is first It can be selected by selecting the position of the second part with respect to the first part.
The resistance to gas flow per unit length of the first filter section is greater than the resistance to gas flow per unit length of the second filter section .
The resistance to the gas flowing through the entire length of the first filter section is at least three times greater than the resistance to the gas flowing through the entire length of the second filter section.
The resistance to the gas flowing through the entire length of the filter structure is a smoking product that is kept substantially constant even if the ventilation level changes. The first filter section has a first tow weight fibrous filter medium and the second filter section has a second tow weight fibrous filter medium.
The smoking product according to claim 1, wherein the second toe weight of the fibrous filter material is smaller than the first toe weight of the fibrous filter material. The claim is characterized in that the pressure drop per unit length of the first filter section is more than 5 mmH ₂ O / mm and the pressure drop per unit length of the second filter section is _{less than 5 mmH 2 O / mm.} The smoking item described in 1 or 2. Resistance to gas flow through the entire length of the first filter section, also less than the resistance to gas flowing through the entire length of the second filter section 4, 5,6,7,8,9,10,11,12,13,14 or The smoking product according to any one of claims 1 to 3, which is 15 times larger. The smoking product according to any one of claims 1 to 4, wherein the first filter section is formed of a first homogeneous filter medium, and the second filter section is formed of a second homogeneous filter medium. .. Any of claims 1-5, wherein the second filter section is separable from the first filter section and / or is movable relative to the first filter section to regulate ventilation to the first filter section. The smoking item described in item 1. The second part further includes a sleeve configured to move relative to the first filter section, the second filter section is secured within the sleeve and the level of ventilation is increased by repositioning the sleeve with respect to the first filter section. The smoking product according to any one of claims 1 to 6, wherein the smoking product can be changed. The smoking product according to claim 7, wherein the sleeve is rotatable with respect to the first filter section, and the ventilation level can be changed by changing the angular position of the sleeve with respect to the first filter section. The length of the first filter section is 5 to 25 mm, the length of the second filter section is 5 to 25 mm, and / or the ventilation structure provides ventilated air 6 mm to 35 mm from the mouthpiece of the smoked product. The smoking product according to any one of claims 1 to 8, wherein the product is provided. The first and second filter sections contain toe filaments, and the first filter section is one or more of the toe weight, the number of toe filaments per unit volume, the cross section of the toe filaments and the degree of crimping with the second filter section. The smoking product according to any one of claims 1 to 9, wherein the smoking products are different from each other. The smoking product according to any one of claims 1 to 10, wherein the second filter section includes at least one air passage extending in the longitudinal direction through the length thereof. The smoking product according to claim 11, wherein the diameter of the air passage is 1 to 7 mm. The smoking product according to any one of claims 1 to 12, wherein the second filter section contains a fibrous filter material formed having an annular end face. Any of claims 1 to 13, wherein the second filter section is a tube made of fibrous filter material, and the air passage extends along a central longitudinal axis through the length of the second filter section. The smoking item described in item 1. It includes a first filter section and a second filter section, and the second filter section has a filter structure located downstream of the first filter section.
Ventilation level into the first filter section with a filter comprising, a ventilation structure configured so that the user can adjust the filter includes a first portion and a second portion, the ventilation level first portion It can be selected by selecting the position of the second part with respect to
The resistance to gas flow per unit length of the first filter section is greater than the resistance to gas flow per unit length of the second filter section .
The resistance to the gas flowing through the entire length of the first filter section is at least three times greater than the resistance to the gas flowing through the entire length of the second filter section.
A filter for smoking products whose resistance to the gas flowing through the entire length of the filter structure is kept substantially constant even if the ventilation level changes. It is a method of manufacturing smoking products, and this method is
Forming a first filter section with a first resistance to gas flow per unit length, and
Forming a separate second filter section with a second resistance to gas flow per unit length, and
The first resistance to gas flow per unit length should be greater than the second resistance to gas flow per unit length .
The resistance to the gas flowing through the entire length of the first filter section should be at least three times greater than the resistance to the gas flowing through the entire length of the second filter section.
Assembling the first filter section and the second filter section with one or more additional members to form the smoked product so that the second filter section is located downstream of the first filter section of the smoked product , and A method of manufacturing a smoked product, including forming a ventilated structure in the smoked product that is configured to allow the user to adjust the level of ventilation into the first filter section.

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