CN112006327A - Filter element for a tobacco product and tobacco product - Google Patents
Filter element for a tobacco product and tobacco product Download PDFInfo
- Publication number
- CN112006327A CN112006327A CN201910394519.5A CN201910394519A CN112006327A CN 112006327 A CN112006327 A CN 112006327A CN 201910394519 A CN201910394519 A CN 201910394519A CN 112006327 A CN112006327 A CN 112006327A
- Authority
- CN
- China
- Prior art keywords
- stage
- filter element
- stage flow
- filter
- airflow
- Prior art date
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- Granted
Links
- 235000019505 tobacco product Nutrition 0.000 title claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 230000001965 increasing effect Effects 0.000 claims abstract description 9
- 230000000391 smoking effect Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 3
- 239000004626 polylactic acid Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 30
- 235000019504 cigarettes Nutrition 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003571 electronic cigarette Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention provides a filtering component of a tobacco product and the tobacco product, wherein the filtering component comprises a filtering section and a wrapping layer tightly attached to at least part of the outer side surface of the filtering section, at least one multi-stage flow distribution groove with a tree-shaped structure is arranged on the outer side surface of the filtering section along the axial direction, and at least one multi-stage flow distribution channel is formed by the at least one multi-stage flow distribution groove and the wrapping layer; each multi-stage flow distribution channel forms an airflow inlet at the far end of the filtering component, a plurality of airflow outlets are formed at the near end of the filtering component, and the number of channels of each multi-stage flow distribution channel is increased from the airflow inlet to the airflow outlets step by step, so that the smoke flows into the multi-stage flow distribution channel from the airflow inlet and flows out from the airflow outlets after being subjected to multi-stage flow distribution. Utilize above-mentioned filter unit, can filter and reduced the entry temperature of flue gas more equallyd divide, promoted consumer's suction taste. The invention also provides a tobacco product made by using the filter component.
Description
Technical Field
The invention belongs to the field of tobacco products, and particularly relates to a filter component of a tobacco product and the tobacco product.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
At present, with the appearance and continuous development of heating non-combustion technology, the filter element structure in the traditional cigarette product cannot adapt to the experience requirement of consumers, and the improvement requirement on the filter element of the tobacco product is gradually increased. The reason is that when the traditional round filtering rod is applied to a heating non-combustion device for filtering, various problems of inconsistent smoke, high inlet temperature and the like can occur, and the smoking experience of consumers is greatly influenced.
Disclosure of Invention
In order to solve the existing problems, the invention provides a filtering component of a tobacco product, on one hand, the multi-stage flow distribution channel with a tree-shaped structure is used for distributing smoke, so that smoke components are filtered step by step under the condition of not obviously increasing the suction resistance, the interception of the smoke by the filtering component is more balanced, and the problem of inconsistent smoke taste caused by integral filtering of the filtering component in the prior art is avoided. On the other hand, the filter part of the invention enables the smoke passage to move outwards to the periphery of the filter section, thereby further enhancing the material exchange and the energy exchange between the smoke and the surrounding environment, reducing the inlet temperature of the smoke and improving the smoking taste of consumers.
The present invention provides the following.
In a first aspect of the invention, a filter element of a tobacco product is provided, which comprises a cylindrical filter segment and a wrapping layer tightly attached to at least part of the outer side surface of the filter segment, and is characterized in that at least one multi-stage flow dividing groove with a tree-shaped structure is arranged on the outer side surface of the filter segment along the axial direction, and at least one multi-stage flow dividing channel is formed by the at least one multi-stage flow dividing groove and the wrapping layer; each multi-stage flow dividing channel forms an airflow inlet at the far end of the filtering component, a plurality of airflow outlets are formed at the near end of the filtering component, and the number of channels of each multi-stage flow dividing channel is increased from the airflow inlet to the airflow outlets step by step, so that the flue gas flows into the multi-stage flow dividing channels from the airflow inlets and flows out from the airflow outlets after multi-stage flow dividing.
Preferably, at least one multi-stage flow distribution groove of the tree structure is further formed as a plurality of multi-stage flow distribution grooves, and the multi-stage flow distribution grooves of the tree structure are uniformly distributed on the outer side surface of the filter segment relative to the central axis of the filter segment.
Preferably, in the multi-stage flow dividing channel, at least three stage flow dividing channels are provided from the airflow inlet to the airflow outlets, and include: the first-stage channel is provided with the airflow inlet at one end facing the far-end of the filtering component, a first diversion node is formed at one end facing the near-end of the filtering component, and a plurality of second-stage channels with preset lengths are extended from the first diversion node to the near-end of the filtering component; the end, facing the near-mouth end of the filtering component, of each second-stage channel is formed into a plurality of second shunt nodes, and a plurality of third-stage channels with preset lengths are respectively extended from the second shunt nodes to the near-mouth end of the filtering component; the plurality of third-stage channels, wherein one end facing the proximal end of the filter element is/are conducted to the plurality of airflow outlets.
Preferably, in the multi-stage flow-dividing passage, the number of passages of the next-stage passage extending from each flow-dividing node to the proximal end of the filter element is not more than seven.
Preferably, the radial depth of the multistage shunting groove is 0.2-5 mm, and preferably 0.5-2 mm.
Preferably, in any two radial cross sections in the filter element, the deviation of the total area of the channel sections respectively formed by the at least one multi-stage flow-dividing channel is not more than 10%.
Preferably, the area ratio of any one radial cross section obtained from the filter segment to the radial cross section of the inner cavity of the wrapping layer is between 50% and 98%.
Preferably, the filter section is formed as a cylindrical solid bar made of a polymer material as a matrix, wherein the polymer material comprises one or more of the following: acetate tow, polypropylene tow and polylactic acid.
Preferably, the wrapping layer is formed as a paper fiber product, and a surface of the wrapping layer is formed to include a plurality of micro through holes.
In a second aspect of the invention, there is provided a smoking article characterised in that the smoking article comprises a filter element as described above.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: tobacco products's filter element utilizes the multistage reposition of redundant personnel passageway of arborescent structure to shunt the flue gas on the one hand in this application, realizes filtering step by step to the flue gas composition under the condition of not obviously increasing the suction resistance, and then filter element is more balanced to holding back of flue gas, avoids appearing the inconsistent problem of flue gas taste that leads to because filter element monolithic filter among the prior art. On the other hand, the filter part of the invention enables the smoke passage to move outwards to the periphery of the filter section, thereby further enhancing the material exchange and the energy exchange between the smoke and the surrounding environment, reducing the inlet temperature of the smoke and improving the smoking taste of consumers.
It should be understood that the above description is only an overview of the technical solutions of the present invention, so as to clearly understand the technical means of the present invention, and thus can be implemented according to the content of the description. In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments of the present invention are described below.
Drawings
The advantages and benefits described herein, as well as other advantages and benefits, will be apparent to those of ordinary skill in the art upon reading the following detailed description of the exemplary embodiments. The drawings are only for purposes of illustrating exemplary embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like elements throughout. In the drawings:
FIG. 1 is a schematic structural view of a filter element of a smoking article according to a first embodiment of the invention;
FIGS. 2a and 2b are schematic structural views of a filter element of a tobacco product according to a first embodiment of the invention;
fig. 3a and 3b are schematic structural diagrams of a filter element of a tobacco product according to a first embodiment of the invention.
In the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the present invention, the embodiments and features in the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example one
Referring to fig. 1, a schematic structural diagram of a filter segment 1 in a filter element of a tobacco product according to an embodiment of the present invention is shown, and it should be noted that unnecessary components, such as a wrapping layer of the filter element, are simplified in the drawing of this embodiment. However, it will be appreciated that the cylindrical filter segment 1 shown in fig. 1 is covered with a cylindrical wrapping layer on the outer surface thereof, so that at least part of the outer surface of the filter segment 1 is closely attached to the inner cavity of the cylindrical wrapping layer, thereby forming the filter element of the tobacco product provided in the present application.
As shown in fig. 1, at least one multi-stage flow dividing groove with a tree-like structure is arranged on the outer side surface of the filter segment 1 along the axial direction (i.e. the length direction) of the filter segment 1, so that the at least one multi-stage flow dividing groove and a wrapping layer wrapping the outer side surface of the filter segment 1 are combined to form at least one multi-stage flow dividing channel.
It is noted that the end of the filter element adjacent to the mouth of the consumer is referred to as the proximal end (i.e., end B in fig. 1), and is generally used for the consumer to draw filtered smoke from the filter element through the mouth, and the end of the filter element further away from the mouth of the consumer is referred to as the distal end (i.e., end a in fig. 1), and is generally in communication with a smoke generating device (e.g., a cigarette cartridge in a cigarette or an e-cigarette) for receiving unfiltered smoke for filtering.
In this embodiment, each multi-stage bypass channel forms an airflow inlet at the far end (end a) of the filter element, and forms a plurality of airflow outlets at the near end (end B) of the filter element, and the number of channels of each multi-stage bypass channel increases from the airflow inlet to the airflow outlets step by step, so that the flue gas flows into the multi-stage bypass channel from the airflow inlet, and flows out from the airflow outlets after being subjected to multi-stage bypass.
In this embodiment, tobacco products's filter unit utilizes the multistage reposition of redundant personnel passageway of tree structure to shunt the flue gas on the one hand, realizes filtering step by step to flue gas composition under the condition of not obviously increasing the suction resistance, and then filter unit is more balanced to the entrapment of flue gas, has increased the flue gas step by step when the passageway flows with the area of contact of fillter section, avoids appearing the inconsistent problem of flue gas taste that leads to because filter unit integral filtration among the prior art. On the other hand, the filter part of the invention enables the smoke passage to move outwards to the periphery of the filter section, thereby further enhancing the material exchange and the energy exchange between the smoke and the surrounding environment, reducing the inlet temperature of the smoke and improving the smoking taste of consumers.
Fig. 2a shows an end view a of the filter segment 1, fig. 2B shows an end view B of the filter segment, fig. 3a shows an axial view of the filter segment 1, and fig. 3B shows a cross-sectional view of the middle of the filter segment 1 along section c-c. The specific structure of the filter element in the present embodiment will be further described and expanded with reference to fig. 2a, 2b, 3a and 3 b.
Preferably, the multi-stage flow distribution groove of the at least one tree structure is further formed as a plurality of multi-stage flow distribution grooves, and the plurality of multi-stage flow distribution grooves are uniformly distributed on the outer side surface of the filter segment with respect to the central axis of the filter segment. Specifically, gaps formed in each cross section of the filter section in the multi-stage flow dividing grooves are uniformly and symmetrically distributed relative to the central axis of the filter section, so that the phenomenon that smoke is concentrated on one side of the filter section to be filtered is avoided.
Preferably, as shown in fig. 1, in the multistage distribution channel, at least three stages of distribution channels are provided from the airflow inlet to the airflow outlets, and may specifically include:
a first-stage channel, that is, a channel formed by the first-stage groove 101 and the wrapping layer, wherein an end facing a far-end (a-end) of the filter element is an air flow inlet, an end facing a near-end (B-end) of the filter element is formed as a first diversion node, the first diversion node is specifically formed by combining the first node groove 111 and the wrapping layer, and the first diversion node leads out a plurality of second-stage channels with preset lengths to the near-end (B-end) of the filter element, and the second-stage channels are specifically formed by combining the second-stage groove 102 and the wrapping layer;
a plurality of second-stage channels, wherein one end facing the proximal end (B end) of the filter element is formed as a plurality of second tapping nodes, which are formed by a second node groove 112 in combination with the wrapping layer, and a plurality of third-stage channels of a predetermined length, which are formed by a third-stage groove 103 in combination with the wrapping layer, are extended from the plurality of second tapping nodes to the proximal end (B end) of the filter element;
and a plurality of third-stage channels, wherein one end facing the near-port end (B end) of the filter component is a plurality of airflow outlets. Optionally, more than three stages of flow dividing channels may be further disposed in the multi-stage flow dividing channel, and then one end of the third stage channels facing the near-port end (B end) of the filtering component may be formed into a plurality of third flow dividing nodes, and then a plurality of next stage channels are respectively extended from the plurality of third flow dividing nodes until the next stage channels are conducted to the plurality of airflow outlets. It can be seen that the grooves starting from the far end (section A) of the filter segment 1 are forked twice to obtain a plurality of reduced grooves, the shapes of the grooves are of tree-shaped structures, so that the contact area between the smoke and the filter segment 1 when the smoke flows in the multi-stage flow dividing channel is increased step by step, the grooves on the outer peripheral surface of the filter segment 1 can directly exchange heat with the outside through the wrapping layers, and the smoke temperature is further reduced.
Alternatively, the radial cross-sectional dimension of the first flow splitting node may be greater than the radial cross-sectional dimension of the first stage channel, the radial cross-sectional dimension of the second flow splitting node may be greater than the radial cross-sectional dimension of the second stage channel, and so on. Therefore, the total radial cross-sectional area of the plurality of next-stage channels extending from the flow dividing node to the near-port end of the filtering component is basically consistent with the radial cross-sectional area of the previous-stage channel, and the plurality of next-stage channels can be separated from each other at a certain distance.
Preferably, in the multi-stage flow-splitting channel, the number of channels of the next-stage channel extending from each flow-splitting node to the proximal end of the filter element is not more than seven.
Preferably, the radial depth of the multistage shunting groove is 0.2-5 mm, preferably 0.5-2 mm, so that the suction resistance of the filtering part can be reduced.
Preferably, in any two radial cross sections in the filter element, the total area of the channel sections formed by the at least one multi-stage flow-dividing channel, respectively, deviates by no more than 10%. For example, referring to fig. 2a and 2B, as the number of channels increases, the size of the channels decreases step by step, two sets of large-opening first-stage grooves 101 are formed at the far-end (end a) of the filter segment 1, eighteen sets of small-size third-stage grooves 103 are formed at the near-end (end B) of the filter segment 1, and referring to fig. 3B and 3B, six sets of small-size second-stage grooves 102 extend and expand from the first-stage grooves 101, wherein the sum of the sectional areas of the two sets of first-stage grooves 101, the six sets of second-stage grooves 102, and the eighteen sets of third-stage grooves 103 is substantially consistent, the size deviation is within 10%, and the sum of the respective sectional areas accounts for about 10% of the radial sectional area of the inner cavity of the wrapping layer. In this embodiment, the total area of the channel interfaces of the multi-stage flow dividing channels is set to be substantially the same, so that the increase of the suction resistance caused by the stage-by-stage flow dividing is avoided.
Preferably, the area ratio of any one radial cross section obtained from the filtering section to the radial cross section of the inner cavity of the wrapping layer is 50-98%, so that the flow speed of the flue gas can be controlled, a large amount of flue gas is prevented from being filtered at the same time, and the filtering effect is further improved.
Preferably, the filter segment 1 is formed as a cylindrical solid bar made of a polymer material as a matrix, wherein the polymer material comprises one or more of the following: acetate tow, polypropylene tow and polylactic acid. Alternatively, the cylindrical solid bar in the present invention is not limited to a cylindrical shape, and may be, for example, a polygonal prism shape or a truncated cone shape, which is not particularly limited in the present application. And the base material of the filter section is a material commonly used in the cigarette industry, and is low in cost and easy to obtain.
Preferably, the wrapping layer is formed as a paper fiber product, and a surface of the wrapping layer is formed to include a plurality of micro-through holes. The paper fiber product is a material commonly used in the cigarette industry, is low in cost and easy to obtain, and promotes the exchange efficiency of heat exchange of smoke with the outside through the wrapping layer by arranging the plurality of micro through holes on the surface of the wrapping layer, further reduces the smoke temperature, and promotes the smoking taste of consumers.
Example two
The invention also provides a smoking article comprising a filter element as described above and any one or more smoke-generating devices.
In this embodiment, the smoke generating device may be a conventional combustion type cigarette product, or may be a novel heating device for heating a non-combustion cigarette product or electronic cigarette smoke, and the application does not specifically limit this.
Tobacco products who provides in this application, through the special setting of filter element wherein, utilize the multistage reposition of redundant personnel passageway of tree structure to the produced unfiltered flue gas of smoke gas generation device to shunt on the one hand, realize filtering step by step to the flue gas composition under the condition of not showing the increase suction resistance, and then filter element is more balanced to the entrapment of flue gas, avoids appearing the inconsistent problem of flue gas taste that leads to because filter element monolithic filter among the prior art. On the other hand, the smoke passage is moved to the periphery of the filtering device, so that the material exchange and the energy exchange of the smoke and the surrounding environment are further enhanced, the inlet temperature of the smoke is reduced, and the smoking mouthfeel of consumers is improved.
While the spirit and principles of the invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A filter element of a tobacco product, comprising a cylindrical filter segment and a wrapping layer closely attached to at least part of the outer side surface of the filter segment,
at least one multistage shunting groove with a tree-shaped structure is arranged on the outer side surface of the filtering section along the axial direction, and at least one multistage shunting groove and the wrapping layer form at least one multistage shunting channel;
each multi-stage flow dividing channel forms an airflow inlet at the far end of the filtering component, a plurality of airflow outlets are formed at the near end of the filtering component, and the number of channels of each multi-stage flow dividing channel is increased from the airflow inlet to the airflow outlets step by step, so that the flue gas flows into the multi-stage flow dividing channels from the airflow inlets and flows out from the airflow outlets after multi-stage flow dividing.
2. The filter element according to claim 1, wherein the at least one tree-shaped multi-stage flow distribution groove is further formed as a plurality of multi-stage flow distribution grooves, and the plurality of multi-stage flow distribution grooves are uniformly distributed on the outer side of the filter segment with respect to the central axis of the filter segment.
3. The filter element according to claim 1, wherein at least three stages of flow dividing channels are provided in the multistage flow dividing channel from the gas flow inlet to the plurality of gas flow outlets, and comprise:
the first-stage channel is provided with the airflow inlet at one end facing the far-end of the filtering component, a first diversion node is formed at one end facing the near-end of the filtering component, and a plurality of second-stage channels with preset lengths are extended from the first diversion node to the near-end of the filtering component;
the end, facing the near-mouth end of the filtering component, of each second-stage channel is formed into a plurality of second shunt nodes, and a plurality of third-stage channels with preset lengths are respectively extended from the second shunt nodes to the near-mouth end of the filtering component;
the plurality of third-stage channels, wherein one end facing the proximal end of the filter element is/are conducted to the plurality of airflow outlets.
4. A filter element as claimed in claim 3 wherein, in said plurality of stages of branching passages, no more than seven next stage passages extend from each branching node to the proximal end of said filter element.
5. A filter element according to any one of claims 1 to 4, wherein the radial depth of the multi-stage flow dividing grooves is 0.2 to 5mm, preferably 0.5 to 2 mm.
6. Filter element according to one of claims 1 to 4, wherein the total area of the channel cross sections formed by the at least one multi-stage flow-dividing channel, respectively, in any two radial cross sections of the filter element does not deviate more than 10%.
7. A filter element as claimed in any one of claims 1 to 4, wherein the ratio of the area of any one radial cross-section taken through the filter segment to the radial cross-section of the inner cavity of the envelope is in the range 50% to 98%.
8. The filter element of claim 1, wherein the filter segments are formed as cylindrical solid rods made from a polymeric material as a matrix, wherein the polymeric material comprises one or more of: acetate tow, polypropylene tow and polylactic acid.
9. The filter element of claim 1, wherein the wrapper is formed as a paper fiber product, the wrapper having a surface formed to include a plurality of micro-perforations.
10. A smoking article comprising a filter element according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394519.5A CN112006327B (en) | 2019-05-13 | 2019-05-13 | Filter element for tobacco products and tobacco products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394519.5A CN112006327B (en) | 2019-05-13 | 2019-05-13 | Filter element for tobacco products and tobacco products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112006327A true CN112006327A (en) | 2020-12-01 |
| CN112006327B CN112006327B (en) | 2024-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910394519.5A Active CN112006327B (en) | 2019-05-13 | 2019-05-13 | Filter element for tobacco products and tobacco products |
Country Status (1)
| Country | Link |
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| CN (1) | CN112006327B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637409A (en) * | 1981-05-07 | 1987-01-20 | American Filtrona Corporation | Tobacco smoke filter and method and apparatus for making same |
| DE29605497U1 (en) * | 1995-09-12 | 1996-05-09 | Elstner, Hans, Balsthal | Smoke filter |
| US20140158144A1 (en) * | 2011-07-20 | 2014-06-12 | British American Tobacco (Investments) Limited | Smoking article |
| CN206791622U (en) * | 2017-06-07 | 2017-12-26 | 常州市派腾电子技术服务有限公司 | Aspirator |
| CN210538885U (en) * | 2019-05-13 | 2020-05-19 | 湖北中烟工业有限责任公司 | Filter element for a tobacco product and tobacco product |
-
2019
- 2019-05-13 CN CN201910394519.5A patent/CN112006327B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637409A (en) * | 1981-05-07 | 1987-01-20 | American Filtrona Corporation | Tobacco smoke filter and method and apparatus for making same |
| DE29605497U1 (en) * | 1995-09-12 | 1996-05-09 | Elstner, Hans, Balsthal | Smoke filter |
| US20140158144A1 (en) * | 2011-07-20 | 2014-06-12 | British American Tobacco (Investments) Limited | Smoking article |
| CN206791622U (en) * | 2017-06-07 | 2017-12-26 | 常州市派腾电子技术服务有限公司 | Aspirator |
| CN210538885U (en) * | 2019-05-13 | 2020-05-19 | 湖北中烟工业有限责任公司 | Filter element for a tobacco product and tobacco product |
Non-Patent Citations (1)
| Title |
|---|
| 吴君章;黄翼飞;曾劲松;唐大荣;: "卷烟滤嘴的过滤结构研究进展", 轻工机械, no. 05, 20 October 2017 (2017-10-20) * |
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| Publication number | Publication date |
|---|---|
| CN112006327B (en) | 2024-10-15 |
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