CN109645565A - A kind of environmental protection filter tip stick and its production method - Google Patents
A kind of environmental protection filter tip stick and its production method Download PDFInfo
- Publication number
- CN109645565A CN109645565A CN201910075956.0A CN201910075956A CN109645565A CN 109645565 A CN109645565 A CN 109645565A CN 201910075956 A CN201910075956 A CN 201910075956A CN 109645565 A CN109645565 A CN 109645565A
- Authority
- CN
- China
- Prior art keywords
- fillter section
- hydridization
- environmental protection
- filter tip
- packing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
- A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
-
- 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
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
- A24D3/0212—Applying additives to filter materials
- A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
-
- 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
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
-
- 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
- A24D3/06—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
Abstract
The invention discloses a kind of environmental protection filter tip sticks, including clad, the first fillter section and the second fillter section, the end of first fillter section is connect with the end of second fillter section, and the clad is coated on the periphery wall of first fillter section and second fillter section；Second fillter section includes shell and filtering material, is equipped with accommodating cavity in the shell, the filtering material is filled in the accommodating cavity.The invention also discloses the production method of above-mentioned environmental protection filter tip stick, including immersion, filling, solidification and assembling and etc..Cellulose acetate fibre and polypropylene fibre are replaced using plant fiber, reduce the degradation cycle of filter rod, the consumption to timber and petroleum resources is reduced, to more environment-friendly；And the harmful substance in hydridization packing material removal flue gas is added, reduce harm of the tobacco to consumer health.
Description
Technical field
The invention belongs to cigarette filter tip rod technical fields, specifically, being related to a kind of environmental protection filter tip stick and its production method.
Background technique
China's cigarette filter tip rod mainly uses cellulose acetate fibre and polypropylene fibre to be made at present, and production technology is multiple
It is miscellaneous, it is at high cost.Although cellulose acetate fibre is originated from timber, its degradation cycle is still up to 4 years, and degradation time is longer；And
The raw material of polystyrene fiber production comes from petroleum, belongs to non-renewable resources, does not meet the production reason of environmentally friendly sustainable development
It reads.On the other hand, existing cigarette filter tip rod structure is single, removes the energy of the harmful substances such as tar removing, phenol, hydrogen cyanide and crotonaldehyde
Power is limited, it is necessary to further improve its clean-up effect.
Summary of the invention
For deficiency above-mentioned in the prior art, the present invention provides a kind of environmental protection filter tip stick and its production method, directly adopts
Cellulose acetate fibre and polypropylene fibre are replaced with plant fiber, reduces the degradation cycle of filter rod, and adds hydridization filling
Material removes the harmful substance in flue gas, reduces harm of the tobacco to consumer health.
In order to achieve the above object, the solution that the present invention uses is: a kind of environmental protection filter tip stick, including clad,
One fillter section and the second fillter section, first fillter section and second fillter section are cylindrical, first filtering
The end of section is connect with the end of second fillter section, and the clad is coated on first fillter section and second mistake
Filter the periphery wall of section；Second fillter section includes shell and filtering material, is equipped with accommodating cavity, the accommodating cavity in the shell
Through the both ends of the shell, the filtering material is filled in the accommodating cavity.
Further, the filtering material includes web and the hydridization packing material in the web.
Further, the hydridization packing material includes HNTs, di-iron trioxide and sodium chloride crystal.
Further, the hydridization packing material preparation method the following steps are included:
S1: it is molten that 24-37g/L sodium chloride solution, 10-40g/L ferric chloride solution and 0.6%-0.9% polyvinyl alcohol are prepared
Liquid；
S2: by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution, 5:1:0.4 mixes system by volume respectively
Obtain soak；
S3: stirring after soak is added by weight 1:5 in HNTs, continues after then adjusting pH to 8-9 with 14% ammonium hydroxide
It is stirred to react 3h；
S4: reaction product is separated by filtration, and is dried, and grinding calcines 2h at 400 DEG C, obtains hydridization packing material.
Further, shell score meter by weight, comprising: 12-16 parts of plant fiber, 1-3 parts of chitosan and bonding
3-5 parts of agent.
The invention also discloses the production method of above-mentioned environmental protection filter tip stick, it the following steps are included:
S1: plant fiber is immersed into setting agent and ultrasonic vibration 30-50 seconds, setting agent is made to be attached to the table of plant fiber
Face；
S2: the plant fiber for being attached with setting agent and the hydridization packing material 4-6:1 in mass ratio are mixed and stirred for
Uniformly, hydridization packing material is made to be attached to plant fibre surface；
S3: it is intracorporal before setting agent dry solidification the plant fiber for being attached with hydridization packing material to be packed into the shell
Accommodating cavity, and 3-5 minutes obtained semi-finished product of ultrasonic vibration；
S4: standing 30-35 minutes for the semi-finished product under 25 degrees Celsius of environment, is made described after setting agent dry solidification
Second fillter section；
S5: the end of first fillter section is connect with second fillter section end using bonding agent；
S6: clad is wrapped in the periphery wall finished product of first fillter section and second fillter section.
The beneficial effects of the present invention are:
(1) plant fiber used described in shell and filtering material is using wastes such as sawdust and stalks, by broken
It is made after broken, flushing and drying process, reduces the consumption to timber and petroleum resources, improve resource utilization, more to environment
It is friendly；
(2) cellulose acetate fibre is compared, the present invention directlys adopt plant fiber and is made, without carrying out at complicated chemistry
Reason, after discarding, degradation cycle only needs 6-10 months under natural conditions；
(3) filtering material includes web and the hydridization packing material in web, and web is on the one hand to flue gas
In the harmful substances such as tar there is filtering scavenging effect, carrier of the another aspect web as hydridization packing material makes miscellaneous
Change packing material to be three-dimensionally distributed in accommodating cavity, ensure that the venting capability and filter capacity of filtering material simultaneously in this way, it is miscellaneous
Changing packing material sufficiently and smoke contacts more effectively can remove harmful substance therein；
(4) for HNTs as a kind of natural nano-material, itself has unique tubular structure, has good adsorption energy
Power can reduce its degree of polymerization, further enhance its performance, separately after ferric chloride solution and poly-vinyl alcohol solution is added and calcines
On the one hand, after calcining, partial oxidation sodium crystallizes in HNTs, is cooperated by inorganic salts and HNTs so that hydridization packing material is to cyanogen
Changing the small-molecule substances such as hydrogen also has fine removal ability, reduces harm of the tobacco to consumer health；
(5) simple production process, without complicated production equipment, production cost is low, enhances the productivity effect of manufacturing enterprise.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the front view of the second fillter section of the invention；
In attached drawing:
1- clad, the first fillter section of 2-, the second fillter section of 3-, 31- accommodating cavity, 4- shell, 5- filtering material.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described:
The present embodiment provides a kind of environmental protection filter tip sticks, as depicted in figs. 1 and 2, including clad 1, the first fillter section 2 and
Two fillter sections 3, wherein clad 1 is existing cigarette filter tip rod packet paper, and the first fillter section 2 is existing using cellulose acetate
Filter rod made of fiber and polypropylene fibre.First fillter section 2 and second fillter section 3 are cylindrical, institute
The end for stating the first fillter section 2 is connect with the end of second fillter section 3, and the clad 1 is coated on first filtering
The periphery wall of section 2 and second fillter section 3；Second fillter section 3 includes shell 4 and filtering material 5, in the shell 4
Equipped with accommodating cavity 31, the accommodating cavity 31 runs through the both ends of the shell 4, and the filtering material 5 is filled in the accommodating cavity 31
It is interior.
Specifically, the filtering material 5 includes web and the hydridization packing material in the web, described miscellaneous
Changing packing material includes HNTs, di-iron trioxide and sodium chloride crystal.The preparation method of the hydridization packing material includes following
Step:
S1: it is molten that 24-37g/L sodium chloride solution, 10-40g/L ferric chloride solution and 0.6%-0.9% polyvinyl alcohol are prepared
Liquid；
S2: by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution, 5:1:0.4 mixes system by volume respectively
Obtain soak；
S3: it by HNTs in being stirred after soak is added with the ratio of soak weight ratio 1:5, is then adjusted with 14% ammonium hydroxide
Continue to be stirred to react 3h after pH to 8-9；
S4: reaction product is separated by filtration, and is dried, and grinding calcines 2h at 400 DEG C, so that di-iron trioxide is attached to
The surface HNTs, while sodium chloride crystallizes in HNTs, obtains hydridization packing material.
Specifically, the shell 4 score meter by weight, comprising: 12-16 parts of plant fiber, 1-3 parts of chitosan and adhesive
3-5 parts.Directly above-mentioned raw material are mixed when production, then extrusion forming, the finished product of shell 4 is made after drying.
The invention also discloses the production method of above-mentioned environmental protection filter tip stick, it the following steps are included:
S1: plant fiber is immersed into setting agent and ultrasonic vibration 30-50 seconds, setting agent is made to be attached to the table of plant fiber
Face；
S2: the plant fiber for being attached with setting agent and the hydridization packing material 4-6:1 in mass ratio are mixed and stirred for
Uniformly, hydridization packing material is made to be attached to plant fibre surface；
S3: the plant fiber for being attached with hydridization packing material is packed into the shell 4 before setting agent dry solidification
Accommodating cavity 31, and 3-5 minutes obtained semi-finished product of ultrasonic vibration.Wherein the purpose of ultrasonic vibration is to make plant fiber in accommodating cavity
Arrangement is closer in 31, avoids leaving excessive excessive cavity in accommodating cavity 31, guarantees filter effect.
S4: standing 30-35 minutes for the semi-finished product under 25 degrees Celsius of environment, is made described after setting agent dry solidification
Second fillter section 3.Wherein, the plant fiber in accommodating cavity 31 connects into web by setting agent, and the web and shell 4 are solid
Fixed connection.
S5: the end of first fillter section 2 is connect with 3 end of the second fillter section using bonding agent；It is practical raw
When production, bonding agent is the end for being applied to shell 4, and in this way when the first fillter section 2 is connect with shell 4, bonding agent will not be blocked
Channel between accommodating cavity 31 and the first fillter section 2.
S6: clad 1 is wrapped in the periphery wall finished product of first fillter section 2 and second fillter section 3.
Above-mentioned setting agent and adhesive can directly purchase common in the market environment-protecting and non-poisonous setting agent and adhesive into
Row produces, and the plant fiber used described in shell 4 and filtering material 5 is to utilize the wastes such as sawdust and stalk, by being crushed,
It rinses and is made after being dried, 4 finished product of shell is airtight, and plant fiber used by shell 4 is than used by filtering material 5
Plant fiber is thinner, and the plant fiber used described in filtering material 5 is mostly in long strip.When user smokes, due to the material of shell 4
Expect airtight, so flue gas does not pass through shell 4 and enters the first fillter section 2, but completely extends across the filter material in accommodating cavity 31
Material 5 enters the first fillter section 2.
Embodiment:
Three 4 samples of shell are prepared according to the following ratio:
Prepare hydridization packing material sample I:
1. preparing 24g/L sodium chloride solution, 40g/L ferric chloride solution and 0.6% poly-vinyl alcohol solution；
2. 5:1:0.4 mixes system by volume respectively by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution
Obtain soak；
3. stirring after soak is added by weight 1:5 in HNTs, continue to stir after then adjusting pH to 9 with 14% ammonium hydroxide
React 3h；
4. reaction product is separated by filtration, dry, grinding calcines 2h at 400 DEG C, obtains hydridization packing material sample I.
Prepare hydridization packing material sample II:
1. preparing 37g/L sodium chloride solution, 10g/L ferric chloride solution and 0.9% poly-vinyl alcohol solution；
2. 5:1:0.4 mixes system by volume respectively by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution
Obtain soak；
3. stirring after soak is added by weight 1:5 in HNTs, continue to stir after then adjusting pH to 8 with 14% ammonium hydroxide
React 3h；
4. reaction product is separated by filtration, dry, grinding calcines 2h at 400 DEG C, obtains hydridization packing material sample
Ⅱ。
Prepare hydridization packing material sample III:
1. preparing 30g/L sodium chloride solution, 25g/L ferric chloride solution and 0.8% poly-vinyl alcohol solution；
2. 5:1:0.4 mixes system by volume respectively by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution
Obtain soak；
3. stirring after soak is added by weight 1:5 in HNTs, continue to stir after then adjusting pH to 7.5 with 14% ammonium hydroxide
Mix reaction 3h；
4. reaction product is separated by filtration, dry, grinding calcines 2h at 400 DEG C, obtains hydridization packing material sample
Ⅲ。
Prepare environmental protection filter tip stick finished product I:
Plant fiber is immersed into setting agent and ultrasonic vibration 30 seconds, by the plant fiber for being attached with setting agent and the hydridization
The 6:1 in mass ratio of packing material sample II is mixed and stirred for uniformly, and hydridization filling material will be attached with before setting agent dry solidification
The plant fiber of material sample II is packed into the accommodating cavity 31 in the Shell specimens III, and 5 minutes obtained semi-finished product of ultrasonic vibration.
The semi-finished product are stood 35 minutes under 25 degrees Celsius of environment, the second fillter section 3 is made after setting agent dry solidification.Using viscous
It connects agent and connect the end of the first fillter section 2 with 3 end of the second fillter section；Clad 1 is wrapped in first filtering
Environmental protection filter tip stick finished product I is made in the periphery wall of section 2 and second fillter section 3.
Prepare environmental protection filter tip stick finished product II:
Plant fiber is immersed into setting agent and ultrasonic vibration 50 seconds, by the plant fiber for being attached with setting agent and the hydridization
The 4:1 in mass ratio of packing material sample I is mixed and stirred for uniformly, hydridization packing material being attached with before setting agent dry solidification
The plant fiber of sample I is packed into the accommodating cavity 31 in the Shell specimens I, and 4 minutes obtained semi-finished product of ultrasonic vibration.25
The semi-finished product are stood 30 minutes under degree Celsius environment, the second fillter section 3 is made after setting agent dry solidification.Use bonding agent
The end of first fillter section 2 is connect with 3 end of the second fillter section；Clad 1 is wrapped in 2 He of the first fillter section
Environmental protection filter tip stick finished product II is made in the periphery wall of second fillter section 3.
Prepare environmental protection filter tip stick finished product III:
Plant fiber is immersed into setting agent and ultrasonic vibration 40 seconds, by the plant fiber for being attached with setting agent and the hydridization
The 5:1 in mass ratio of packing material sample III is mixed and stirred for uniformly, and hydridization filling material will be attached with before setting agent dry solidification
The plant fiber of material sample III is packed into the accommodating cavity 31 in the Shell specimens II, and 3 minutes obtained semi-finished product of ultrasonic vibration.
The semi-finished product are stood 33 minutes under 25 degrees Celsius of environment, the second fillter section 3 is made after setting agent dry solidification.Using viscous
It connects agent and connect the end of the first fillter section 2 with 3 end of the second fillter section；Clad 1 is wrapped in first filtering
Environmental protection filter tip stick finished product III is made in the periphery wall of section 2 and second fillter section 3.
To existing convention filter stick, environmental protection filter tip stick finished product I, environmental protection filter tip stick finished product II and environmental protection filter tip stick finished product III into
Row test, by the identical flue gas of material composition with identical rate by each filter rod identical time, then to logical
Flue gas material composition after filter stick measures, in test process other environment such as filter rod size, temperature and humidity because
Element is identical.For the ease of comparing, following table is listed through environmental protection filter tip stick finished product I, environmental protection filter tip stick finished product II and ring
Protect after filter rod finished product III each content of material and the ratio by tie substance content in flue gas after convention filter stick in flue gas.
As can be seen from the above table data, environmental protection filter tip stick disclosed in this invention is compared with convention filter stick, Ge Xiangyou
The removal ability of evil substance has obtained a degree of promotion, can reduce harm of the tobacco to consumer health.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (6)
1. a kind of environmental protection filter tip stick, it is characterized in that: including clad, the first fillter section and the second fillter section, first filtering
Section and second fillter section are cylindrical, and the end of the end of first fillter section and second fillter section connects
It connects, the clad is coated on the periphery wall of first fillter section and second fillter section；Second fillter section includes
Shell and filtering material, the shell is interior to be equipped with accommodating cavity, and the accommodating cavity runs through the both ends of the shell, the filtering material
It is filled in the accommodating cavity.
2. environmental protection filter tip stick according to claim 1, it is characterized in that: the filtering material includes web and is located at described
Hydridization packing material in web.
3. environmental protection filter tip stick according to claim 2, it is characterized in that: the hydridization packing material includes HNTs, three oxidations
Two iron and sodium chloride crystal.
4. environmental protection filter tip stick according to claim 3, it is characterized in that: the preparation method of the hydridization packing material include with
Lower step:
S1: 24-37g/L sodium chloride solution, 10-40g/L ferric chloride solution and 0.6%-0.9% poly-vinyl alcohol solution are prepared；
S2: by above-mentioned sodium chloride solution, ferric chloride solution and poly-vinyl alcohol solution, 5:1:0.4 is mixed to prepare leaching by volume respectively
Steep liquid；
S3: stirring after soak is added by weight 1:5 in HNTs, continues to stir after then adjusting pH to 8-9 with 14% ammonium hydroxide
React 3h；
S4: reaction product is separated by filtration, and is dried, and grinding calcines 2h at 400 DEG C, obtains hydridization packing material.
5. environmental protection filter tip stick according to claim 1, it is characterized in that: shell score meter by weight, comprising: plant is fine
12-16 parts of dimension, 1-3 parts of chitosan and 3-5 parts of adhesive.
6. the production method of environmental protection filter tip stick according to claim 2, it is characterized in that: the following steps are included:
S1: plant fiber is immersed into setting agent and ultrasonic vibration 30-50 seconds, setting agent is made to be attached to the surface of plant fiber；
S2: the plant fiber for being attached with setting agent and the hydridization packing material 4-6:1 in mass ratio are mixed and stirred for uniformly,
Hydridization packing material is set to be attached to plant fibre surface；
S3: the plant fiber for being attached with hydridization packing material is packed into the intracorporal accommodating of the shell before setting agent dry solidification
Chamber, and 3-5 minutes obtained semi-finished product of ultrasonic vibration；
S4: standing 30-35 minutes for the semi-finished product under 25 degrees Celsius of environment, is made described second after setting agent dry solidification
Fillter section；
S5: the end of first fillter section is connect with second fillter section end using bonding agent；
S6: clad is wrapped in the periphery wall finished product of first fillter section and second fillter section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075956.0A CN109645565A (en) | 2019-01-25 | 2019-01-25 | A kind of environmental protection filter tip stick and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075956.0A CN109645565A (en) | 2019-01-25 | 2019-01-25 | A kind of environmental protection filter tip stick and its production method |
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| CN109645565A true CN109645565A (en) | 2019-04-19 |
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ID=66121554
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|---|---|---|---|
| CN201910075956.0A Pending CN109645565A (en) | 2019-01-25 | 2019-01-25 | A kind of environmental protection filter tip stick and its production method |
Country Status (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206204A (en) * | 1990-11-30 | 1993-04-27 | Takeda Chemical Industries, Ltd. | Absorbent for lower aldehydes |
| CN103238929A (en) * | 2013-05-14 | 2013-08-14 | 牡丹江卷烟材料厂有限责任公司 | Filter stick containing plant stems shreds and manufacture method thereof |
| CN105038331A (en) * | 2015-06-18 | 2015-11-11 | 成都石大力盾科技有限公司 | Method for preparing Fe2O3-HNTs nano-hybrid material |
| CN105833285A (en) * | 2016-04-15 | 2016-08-10 | 宁波工程学院 | Porous halloysite nanotube hollow microsphere |
-
2019
- 2019-01-25 CN CN201910075956.0A patent/CN109645565A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206204A (en) * | 1990-11-30 | 1993-04-27 | Takeda Chemical Industries, Ltd. | Absorbent for lower aldehydes |
| CN103238929A (en) * | 2013-05-14 | 2013-08-14 | 牡丹江卷烟材料厂有限责任公司 | Filter stick containing plant stems shreds and manufacture method thereof |
| CN105038331A (en) * | 2015-06-18 | 2015-11-11 | 成都石大力盾科技有限公司 | Method for preparing Fe2O3-HNTs nano-hybrid material |
| CN105833285A (en) * | 2016-04-15 | 2016-08-10 | 宁波工程学院 | Porous halloysite nanotube hollow microsphere |
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Application publication date: 20190419 |
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| RJ01 | Rejection of invention patent application after publication |