CN108378416B - Three-section plug-in type composite multi-position intercepting filter tip - Google Patents
Three-section plug-in type composite multi-position intercepting filter tip Download PDFInfo
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- CN108378416B CN108378416B CN201810179832.2A CN201810179832A CN108378416B CN 108378416 B CN108378416 B CN 108378416B CN 201810179832 A CN201810179832 A CN 201810179832A CN 108378416 B CN108378416 B CN 108378416B
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- 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
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
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Abstract
The invention discloses a three-section plug-in type composite multi-position cut-off filter tip which comprises a near-tip section, a middle-cavity filter section and a near-cigarette section, wherein the near-tip section and the near-cigarette section are all plugged in the middle-cavity filter section, and the near-tip section, the middle-cavity filter section and the near-cigarette section are externally coated and fixed through tipping paper. The filter tip comprises a near-mouth section and a near-smoke section which are inserted at two ends of a middle cavity filter section, wherein the near-smoke section contains a cross-linked body of porous starch and graphene oxide, the specific surface area is increased, and more-OH is contained, so that adsorption of harmful substances in smoke can be realized, meanwhile, the middle cavity filter section contains nano composite fibers, the nano fibers have larger specific surface area and contain bentonite, and the nano composite fibers have a porous structure, so that adsorption of the harmful substances in the smoke can be further improved.
Description
Technical Field
The invention belongs to the field of cigarette materials, and relates to a three-section plug-in type composite multi-position cut-off filter tip.
Background
With the continuous improvement of living standard and quality of life, the contradiction between smoking and health is increasingly prominent, the requirement on cigarette safety is higher and higher, the improvement of cigarette safety, and the reduction of the release amount of harmful ingredients in cigarette smoke are the development direction of international cigarette technology and the inevitable demand of developing Chinese cigarettes. The release amount of seven harmful components in the cigarette, namely carbon monoxide, hydrocyanic acid, benzopyrene, phenol, crotonaldehyde, ammonia and 4- (methylnitrosamine) -4- (3-pyridyl) -1-butanone (NNK), can effectively represent the biohazard of the main stream smoke of the cigarette, and the effective reduction of the seven harmful components is a technical key for realizing the work of further reducing harm and tar.
The Chinese patent of application No. 200910308650.1 discloses an additive for reducing harmful components in cigarette smoke and a cigarette thereof, wherein a carbon nano tube preparation dispersed in a surfactant aqueous solution is used as a cigarette tobacco shred additive, the carbon nano tube preparation is sprayed on tobacco leaves in the cigarette production feeding process according to 1-25% of the weight of tobacco shreds, and the carbon nano tubes are uniformly and dispersedly attached to the surfaces of the tobacco shreds after the tobacco shreds are dried. By using the additive, polycyclic aromatic hydrocarbons such as benzopyrene and the like in 6.2-38.8% and tea phenol and catechol in 3.0-28.3% in the mainstream smoke of the cigarette can be removed, the tar content in the smoke can be reduced by 3.4-20.4%, the original color and taste of the cut tobacco are basically unchanged, but the carbon nano tube material is expensive on one hand, the preparation process is complex, and the industrial popularization and application are difficult; on the other hand, the catalyst has no obvious adsorption removal effect on harmful components such as hydrocyanic acid, crotonaldehyde, ammonia, NNK and the like.
Meanwhile, in the prior art, the filter rod realizes the filtration of smoke through the adsorption effect of acetate fibers in the filter rod, the filter rod is integrally formed generally, and the filtering effect on harmful components in the smoke is not obvious.
Disclosure of Invention
The invention aims to provide a three-section plug-in type composite multi-position intercepting filter, which comprises a near-mouth section and a near-smoke section, wherein the near-smoke section is plugged at two ends of a middle cavity filter section, the near-smoke section contains a cross-linked body of porous starch and graphene oxide, the specific surface area is increased, and more-OH is contained at the same time, so that the adsorption of harmful substances in smoke can be realized, meanwhile, the middle cavity filter section contains nano composite fibers, and the nano fibers have larger specific surface area and bentonite, have a porous structure, and can further improve the adsorption of the harmful substances in the smoke.
The purpose of the invention can be realized by the following technical scheme:
a three-section plug-in type composite multi-position cut-off filter tip comprises a near-tip section, a middle-cavity filter section and a near-cigarette section, wherein the near-tip section and the near-cigarette section are all plugged in the middle-cavity filter section, and the near-tip section, the middle-cavity filter section and the near-cigarette section are externally fixed by tipping paper in a covering manner;
the near-smoke section comprises a near-smoke composite filter stick which is fixedly wrapped by rosin paper; the near-smoke composite filter rod is prepared by soaking an acetate fiber filter rod in a modified starch composite solution for 3-5min, taking out and drying in a microwave oven at 40-60 ℃;
the preparation process of the modified starch composite liquid comprises the following steps: adding water into a certain amount of glutinous rice starch, stirring to obtain a starch solution, performing ultrasonic reaction at normal temperature for 30-50min, placing the mixture in a water bath at 50-60 ℃, stirring for reaction for 20-30min, adding graphene oxide, heating to 60 ℃, stirring and crosslinking for 2-3h to obtain a modified starch composite solution; the specific surface area of the polymer after the porous starch and the graphene oxide are crosslinked is increased, and the polymer contains more-OH, so that the adsorption of harmful substances in smoke can be realized, wherein 10-15mL of water is added into 1g of glutinous rice starch, and 15-20mg of graphene oxide is added;
the middle cavity filtering section comprises a middle cavity filtering rod and an aluminum foil paper tube wrapped outside the middle cavity nano filtering rod, wherein the middle cavity filtering rod is positioned in the middle of the aluminum foil paper tube, gaps are formed in two ends of the aluminum foil paper tube, and the near-mouth section and the near-cigarette section are respectively inserted and fixed in the gaps;
the preparation process of the middle-cavity nano filter rod comprises the following steps:
(1) dissolving caprolactam in water to prepare a caprolactam water solution, then adding a part of the caprolactam water solution into a reaction vessel, heating to 70-75 ℃, adding organic bentonite, stirring and mixing uniformly, then adding a certain amount of sodium hydroxide solid, and stirring at constant temperature to react for 20-30 min;
(2) adding the remaining caprolactam water solution into a reaction vessel, stirring uniformly, immediately adding polyisocyanate, heating to 130-140 ℃, stirring for reaction for 1-2h, and then vacuumizing for dehydration to obtain a caprolactam polymer;
(3) adding the caprolactam polymer prepared in the step 2 into a high-efficiency spinning machine for spinning, wherein the spinning temperature is 245 ℃, and the spinning speed is 2800-3000m/min, so as to obtain the nano composite fiber;
(4) and (3) adding the nano composite fiber prepared in the step (3) into an acetate fiber tow, and then preparing the middle-cavity nano filter rod through a filter rod forming machine.
The mass fraction of the caprolactam water solution in the step 1 is 40 percent; adding a caprolactam water solution with the volume of 3:2 in the step 1 and the step 2;
in the step 1, 2.3 to 2.5g of organic bentonite is added into 1kg of caprolactam water solution, and 1.5 to 1.8g of sodium hydroxide is added into the caprolactam water solution;
1.8-2.1g of polyisocyanate is added in the step 2 for every 1kg of caprolactam water solution prepared in the step 1;
in the step 4, 0.11-0.13g of nano composite fiber is added into 1g of acetate fiber tow;
the mouth-approaching section is prepared by wrapping an acetate fiber filter rod with rosin paper.
The invention has the beneficial effects that:
the filter tip can improve the absorption rate of total grain objects, nicotine and tar in smoke through the two adsorption and filtration effects of the near-smoke composite filter stick and the middle cavity filter segment.
The near-smoke section contains the near-smoke composite filter stick, the adsorption rate of smoke can be improved by forming porous starch by the starch in the near-smoke composite filter stick through ultrasound, the starch is annularly broken through ultrasound, the number of primary alcohol groups is increased, the starch can be further crosslinked with epoxy groups in graphene oxide, graphene oxide is fixed, the porous starch has certain cohesiveness under the microwave heating effect, the crosslinked graphene oxide-starch can be fixed on acetate fiber bundles, the graphene oxide has a large specific surface area and more-OH groups, the acute groups in nicotine are combined with or chelated with-OH hydrogen bonds or have an ionic electric attraction effect, and the adsorption of harmful substances in the smoke can be further improved.
The middle-cavity filtering section contains the nano composite fiber, the nano fiber has a large specific surface area, contains bentonite, has a porous structure, and can improve the adsorption of harmful substances in smoke.
The middle cavity filtering section is coated by the filter paper, so that the smoke can be prevented from overflowing, the smoke completely passes through the middle cavity nanometer filtering rod and is completely adsorbed by the middle cavity nanometer filtering rod, and the harmful smoke cannot overflow.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a filter according to the present invention;
fig. 2 is an exploded view of the structure of fig. 1.
Detailed Description
Example 1:
a three-section plug-in type composite multi-position cut-off filter tip is shown in figures 1 and 2 and comprises a near-tip section 1, a middle-cavity filter section 2 and a near-cigarette section 3, wherein the near-tip section and the near-cigarette section are all plugged in the middle-cavity filter section, and the near-tip section, the middle-cavity filter section and the near-cigarette section are externally coated and fixed through outer tipping paper 4;
the near-smoke section 3 comprises a near-smoke composite filter stick which is fixedly wrapped by inner rosin paper; the near-smoke composite filter rod is prepared by soaking an acetate fiber filter rod in a modified starch composite solution for 3-5min, taking out and drying in a microwave oven at 40-60 ℃; the preparation process of the modified starch composite liquid comprises the following steps: adding 10L of water into 1kg of glutinous rice starch, stirring to obtain a starch solution, performing ultrasonic reaction at normal temperature for 30-50min, placing the mixture in a water bath at 50-60 ℃, stirring for reaction for 20-30min, adding 20mg of graphene oxide, heating to 60 ℃, stirring and crosslinking for 2-3h to obtain a modified starch composite solution;
the middle cavity filtering section 2 comprises a middle cavity filtering rod 21 and an aluminum foil paper tube 22 wrapped outside the middle cavity nano filtering rod, wherein the middle cavity filtering rod 21 is positioned in the middle of the aluminum foil paper tube 22, gaps are formed in two ends of the aluminum foil paper tube, and the near-mouth section 1 and the near-cigarette section 3 are respectively inserted and fixed in the gaps;
the preparation process of the middle-cavity nano filter rod comprises the following steps:
(1) dissolving 20kg of caprolactam in 30kg of water to prepare a caprolactam water solution with the concentration of 40%, then adding 30kg of caprolactam water solution into a reaction vessel, heating to 70-75 ℃, adding 66g of organic bentonite, stirring and mixing uniformly, then adding 45g of sodium hydroxide solid, and stirring at constant temperature to react for 20-30 min;
(2) adding the remaining caprolactam water solution into a reaction container, stirring uniformly, immediately adding 90g of polyisocyanate, heating to 130-;
(3) adding the caprolactam polymer prepared in the step 2 into a high-efficiency spinning machine for spinning, wherein the spinning temperature is 245 ℃, and the spinning speed is 2800-3000m/min, so as to obtain the nano composite fiber;
(4) and (3) adding 1.1kg of the nano composite fiber prepared in the step (3) into 10kg of acetate fiber tow, and preparing the middle-cavity nano filter rod by using a filter rod forming machine.
The mouth-close section is prepared by wrapping an acetate fiber filter rod by inner rosin paper.
Example 2:
a three-section plug-in type composite multi-position intercepting filter comprises a near-mouth section 1, a middle-cavity filter section 2 and a near-smoke section 3, wherein the near-mouth section and the near-smoke section are all plugged in the middle-cavity filter section, and the outside of the near-mouth section, the middle-cavity filter section and the near-smoke section are coated and fixed through outer tipping paper 4;
the near-smoke section 3 comprises a near-smoke composite filter stick which is fixedly wrapped by inner rosin paper; the near-smoke composite filter rod is prepared by soaking an acetate fiber filter rod in a modified starch composite solution for 3-5min, taking out and drying in a microwave oven at 40-60 ℃; the preparation process of the modified starch composite liquid comprises the following steps: adding 15L of water into 1kg of glutinous rice starch, stirring to obtain a starch solution, performing ultrasonic reaction at normal temperature for 30-50min, placing the mixture in a water bath at 50-60 ℃, stirring for reaction for 20-30min, adding 15mg of graphene oxide, heating to 60 ℃, stirring and crosslinking for 2-3h to obtain a modified starch composite solution;
the middle cavity filtering section 2 comprises a middle cavity filtering rod 21 and an aluminum foil paper tube 22 wrapped outside the middle cavity nano filtering rod, wherein the middle cavity filtering rod 21 is positioned in the middle of the aluminum foil paper tube 22, gaps are formed in two ends of the aluminum foil paper tube, and the near-mouth section 1 and the near-cigarette section 3 are respectively inserted and fixed in the gaps;
the preparation process of the middle-cavity nano filter rod comprises the following steps:
(1) dissolving 20kg of caprolactam in 30kg of water to prepare a caprolactam water solution with the concentration of 40%, then adding 30kg of caprolactam water solution into a reaction vessel, heating to 70-75 ℃, adding 75g of organic bentonite, stirring and mixing uniformly, then adding 48g of sodium hydroxide solid, and stirring at constant temperature to react for 20-30 min;
(2) adding the remaining caprolactam water solution into a reaction vessel, stirring uniformly, immediately adding 105g of polyisocyanate, heating to 130-;
(3) adding the caprolactam polymer prepared in the step 2 into a high-efficiency spinning machine for spinning, wherein the spinning temperature is 245 ℃, and the spinning speed is 2800-3000m/min, so as to obtain the nano composite fiber;
(4) adding 1.3kg of the nano composite fiber prepared in the step 3 into 10kg of acetate fiber tow, and preparing a middle-cavity nano filter rod through a filter rod forming machine;
the mouth-close section is prepared by wrapping an acetate fiber filter rod by inner rosin paper.
Example 3:
a three-section plug-in type composite multi-position cut-off filter tip comprises a near-tip section, a middle-cavity filter section and a near-smoke section, wherein the near-tip section and the near-smoke section are all plugged in the middle-cavity filter section, and the outside of the near-tip section, the middle-cavity filter section and the near-smoke section are fixed in a covering mode through outer tipping paper;
the preparation method of the mouth-near section and the cigarette-near section is the same as that of the embodiment 2, and the middle cavity filtering section directly wraps the acetate fiber bundle in the aluminum foil paper for preparation.
Example 4
A three-section plug-in type composite multi-position cut-off filter tip comprises a near-tip section, a middle-cavity filter section and a near-smoke section, wherein the near-tip section and the near-smoke section are all plugged in the middle-cavity filter section, and the outside of the near-tip section, the middle-cavity filter section and the near-smoke section are fixed in a covering mode through outer tipping paper;
the preparation method of the middle cavity filter section and the near mouth section is the same as that of the embodiment 2, and the near smoke section directly wraps the acetate fiber bundle in the aluminum foil paper for preparation.
Example 5
A three-section plug-in type composite multi-position cut-off filter tip comprises a near-tip section, a middle-cavity filter section and a near-smoke section, wherein the near-tip section and the near-smoke section are all plugged in the middle-cavity filter section, and the outside of the near-tip section, the middle-cavity filter section and the near-smoke section are fixed in a covering mode through outer tipping paper;
wherein the proximal filter section is the same as the embodiment 2, and the middle filter section is prepared by directly coating acetate fiber bundles in aluminum foil paper; the near-smoke section is prepared by directly coating acetate fiber bundles in aluminum-foil paper.
The filters prepared in examples 1 to 5 were prepared into sample cigarettes with tobacco rods, and then the total grain size, nicotine, and tar in the smoke were measured, and the results are shown in table 1:
TABLE 1 results of the measurements of the absorption of total particulate matter, nicotine and tar in the smoke by the filters of examples 1-5
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Total grain size in mg/count | 6.34 | 6.42 | 11.22 | 8.43 | 14.85 |
| Nicotine mg/count | 0.23 | 0.21 | 0.56 | 0.38 | 0.71 |
| Mg/count of tar | 6.91 | 6.87 | 9.35 | 7.82 | 11.67 |
It can be known from table 1 that the absorption rate of total particulate matter, nicotine and tar in smoke can be improved by using the near-smoke composite filter stick in the near-smoke section and the middle-cavity nano filter stick in the middle-cavity filter section at the same time of the filter tip, the adsorption rate of smoke can be improved by forming porous starch in the near-smoke composite filter stick through ultrasound, the annular breakage of starch is realized through ultrasound, the number of primary alcohol groups is increased, and then the starch can be crosslinked with epoxy groups in graphene oxide, so that the graphene oxide can be fixed, the porous starch has certain cohesiveness under the microwave heating action, the crosslinked graphene oxide-starch can be fixed on an acetate fiber bundle, the graphene oxide has a large specific surface area and more-OH, so that polar groups in nicotine are combined with-OH hydrogen bonds or chelate or have an ionic electric attraction effect, thereby further improving the adsorption of harmful substances in the flue gas; meanwhile, the middle-cavity filtering section contains nano composite fibers, the nano fibers have large specific surface area and contain bentonite, and the nano composite fibers have a porous structure and can improve the adsorption of harmful substances in the smoke.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A three-section plug-in type composite multi-position cut-off filter tip comprises a near-tip section, a middle-cavity filter section and a near-cigarette section, and is characterized in that the near-tip section and the near-cigarette section are both plugged in the middle-cavity filter section, and the outside of the near-tip section, the middle-cavity filter section and the near-cigarette section are coated and fixed through tipping paper;
the middle cavity filtering section comprises a middle cavity filtering rod and an aluminum foil paper tube wrapped outside the middle cavity nano filtering rod, wherein the middle cavity filtering rod is positioned in the middle of the aluminum foil paper tube, gaps are formed in two ends of the aluminum foil paper tube, and the near-mouth section and the near-cigarette section are respectively inserted and fixed in the gaps;
the preparation process of the middle-cavity nano filter rod comprises the following steps:
(1) dissolving caprolactam in water to prepare a caprolactam water solution, then adding a part of the caprolactam water solution into a reaction vessel, heating to 70-75 ℃, adding organic bentonite, stirring and mixing uniformly, then adding a certain amount of sodium hydroxide solid, and stirring and reacting at constant temperature for 20-30 min;
(2) adding the remaining caprolactam water solution into a reaction vessel, stirring uniformly, immediately adding polyisocyanate, heating to 130-140 ℃, stirring for reaction for 1-2h, and then vacuumizing for dehydration to obtain a caprolactam polymer;
(3) adding the caprolactam polymer prepared in the step 2 into a high-efficiency spinning machine for spinning, wherein the spinning temperature is 245 ℃, and the spinning speed is 2800-3000m/min, so as to obtain the nano composite fiber;
(4) and (3) adding the nano composite fiber prepared in the step (3) into an acetate fiber tow, and then preparing the middle-cavity nano filter rod through a filter rod forming machine.
2. The three-segment plug-in type composite multi-position cut-off filter tip according to claim 1, wherein the near-tobacco segment comprises a near-tobacco composite filter stick which is wrapped and fixed by rosin paper; the near-smoke composite filter rod is prepared by soaking cellulose acetate filter rod in modified starch composite liquid for 3-5min, taking out, and oven drying in a microwave oven at 40-60 deg.C.
3. The three-segment plug-in type composite multi-position cut-off filter according to claim 2, wherein the modified starch composite liquid is prepared by the following steps: adding water into a certain amount of glutinous rice starch, stirring to obtain a starch solution, performing ultrasonic reaction at normal temperature for 30-50min, placing in a water bath at 50-60 ℃, stirring for reaction for 20-30min, adding graphene oxide, heating to 60 ℃, stirring and crosslinking for 2-3h to obtain the modified starch composite solution.
4. The three-segment plug-in type composite multi-position cut-off filter according to claim 3, wherein 10-15mL of water is added into 1g of glutinous rice starch, and 15-20mg of graphene oxide is added.
5. The three-section plug-in type composite multi-position cut-off filter tip according to claim 1, wherein the mass fraction of the caprolactam water solution in the step (1) is 40%; adding caprolactam aqueous solution in a volume ratio of 3:2 in the step (1) and the step (2).
6. The three-segment plug-in type composite multi-position cut-off filter according to claim 1, wherein in the step (1), 2.3 to 2.5g of organic bentonite and 1.5 to 1.8g of sodium hydroxide are added into 1kg of caprolactam water solution.
7. The three-segment plug-in type composite multi-position cut-off filter tip according to claim 1, wherein the mass of the polyisocyanate added in the step (2) is 1.8-2.1g for every 1kg of caprolactam water solution prepared in the step (1).
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| UY38364A (en) | 2019-09-10 | 2021-04-30 | Compania Ind De Tabacos Monte Paz S A 60% | FILTER MATERIAL AND FILTER TO RETAIN POLYAROMATIC HYDROCARBONS CARBONS AND OTHER COMPOUNDS FROM THE SMOKE OF TOBACCO PRODUCTS |
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|---|---|---|---|---|
| CN1420143A (en) * | 2001-11-19 | 2003-05-28 | 刘新华 | Nylon/bentonite nano composite material |
| CN1810786A (en) * | 2006-03-01 | 2006-08-02 | 湘潭大学 | Synthesis of caprolactam and its oligomer |
| CN102046033A (en) * | 2008-05-21 | 2011-05-04 | R.J.雷诺兹烟草公司 | Apparatus and associated method for forming a filter component of a smoking article and smoking articles made therefrom |
| CN103625090A (en) * | 2013-11-18 | 2014-03-12 | 湖南中烟工业有限责任公司 | Method for preparing nanofiber membrane modified paper base material based on electrostatic spinning and application of nanofiber membrane modified paper base material |
| CN205337579U (en) * | 2016-01-12 | 2016-06-29 | 济南圣泉集团股份有限公司 | Cigarette is filtered to zigzag |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1167589T3 (en) * | 1999-03-11 | 2007-10-29 | Japan Tobacco Inc | Biodegradable articles of cellulose acetate and filter for tobacco smoke |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420143A (en) * | 2001-11-19 | 2003-05-28 | 刘新华 | Nylon/bentonite nano composite material |
| CN1810786A (en) * | 2006-03-01 | 2006-08-02 | 湘潭大学 | Synthesis of caprolactam and its oligomer |
| CN102046033A (en) * | 2008-05-21 | 2011-05-04 | R.J.雷诺兹烟草公司 | Apparatus and associated method for forming a filter component of a smoking article and smoking articles made therefrom |
| CN103625090A (en) * | 2013-11-18 | 2014-03-12 | 湖南中烟工业有限责任公司 | Method for preparing nanofiber membrane modified paper base material based on electrostatic spinning and application of nanofiber membrane modified paper base material |
| CN205337579U (en) * | 2016-01-12 | 2016-06-29 | 济南圣泉集团股份有限公司 | Cigarette is filtered to zigzag |
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