CN108451016A - A kind of preforming cigarette preparation method of the quick-fried pearl of packet water - Google Patents
A kind of preforming cigarette preparation method of the quick-fried pearl of packet water Download PDFInfo
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- CN108451016A CN108451016A CN201810532575.6A CN201810532575A CN108451016A CN 108451016 A CN108451016 A CN 108451016A CN 201810532575 A CN201810532575 A CN 201810532575A CN 108451016 A CN108451016 A CN 108451016A
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- quick
- fried pearl
- water
- hot melt
- melt adhesive
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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
- A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Grain Derivatives (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention discloses a kind of preforming cigarette preparation methods of the quick-fried pearl of packet water, it is desirable to provide a kind of preforming cigarette easy to process preparation method of the quick-fried pearl of packet water.The specific preparation process of the preparation method is as follows：（1）By the way of plastics thermoplastic, hollow ball shape plastic bead is first produced；（2）Water is injected in hollow ball shape plastic bead, while applying hot melt adhesive in hollow ball shape plastic bead inlet；After injection, hot melt adhesive is scratched by scraper, hot melt adhesive is closed into inlet, plays the role of sealing；（3）Spheric granules after sealing is put into hot wind rotary oven；Hot melt adhesive in hot wind rotary oven on spheric granules can soften again, and make Surface uniformization by mutual rolling friction, form the regularity preferably quick-fried pearl of spherical packet water.The present invention can be added to by way of conventional quick-fried pearl addition in cigarette filter.When aspirating the cigarette, consumer can discharge water therein, to play the role of flue gas moisturizing by racking quick-fried pearl.
Description
Technical field
The present invention relates to technical field of cigarettes, more particularly, to a kind of preforming cigarette preparation method of the quick-fried pearl of packet water.
Background technology
China has become the maximum market of cigarette consumption in the world at present, competes also being growing more intense, China's tobacco
The domestic major tobacco enterprise of present situation an urgent demand promote cigarette quality, brand of running business big and strong.And not with lowering harm and decreasing coking
Disconnected to go deep into, cigarettes reduce coke damage inevitably makes part aroma quality and perfume quantity loss in cigarette, causes the original of cigarette
Suction comfort decline, suction taste distortion.Therefore, carry out cigarette flavouring humectation application study and application technology exploitation, it is right
It is of great significance in the market competitiveness for promoting Chinese-style cigarette quality, enhancing brand.
All there is cigarette smoking throat comfort and slightly have deficiency in most of conventional cigarette currently on the market, dry sensation protrudes
The shortcomings that；Therefore, it is necessary to make up this defect by the relevant technologies of flue gas humectation or moisturizing, improve the suction comfort of cigarette.
Wherein, glycerine, propylene glycol, xylitol or sorbierite etc., such polyalcohols humectation is usually added in humectation method in the tobacco
Though agent can maintain moisture content of cut tobaccos in process, pipe tobacco resist processing is improved, since such additive is to be directly added into
In pipe tobacco, burning can be participated in suction, cause to introduce other miscellaneous gas in flue gas, influence the organoleptic quality of cigarette.And
Filter segment carries out the flue gas moisturizing then not no defect of this respect.
Quick-fried pearl technology is generally adopted by for adding liquid in filter tip both at home and abroad at present（Such as 200910273417.4）,
But there are following two disadvantages for currently used quick-fried pearl production technology：1）The wall material for commonly using quick-fried pearl is soluble in water or energy
Enough and water acts on forming corrosion, can not preserve water for a long time；If by the way of thickening quick-fried Zhu Bi, also results in quick-fried pearl and be not easy
It racks, practicability is not strong；2）By groping for a long time, the flexible material for capableing of most effective preservation water at present is plastic material, but
Since plastics and hydrone are not wetted by effect, can not be produced by the way of conventional dripping pill.
Therefore, how to be wall material with plastics, produce the quick-fried pearl of packet water that can be retained for a long time, and make it easier to rack into
In order to be badly in need of the critical issue solved at present.
Invention content
The purpose of the present invention is intended to overcome the shortcomings of the prior art, provides a kind of preforming quick-fried pearl of cigarette packet water
Preparation method.The preparation method can make the quick-fried pearl regularity prepared good, and Water-saving effect is notable, and can easily rack.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：
A kind of preforming cigarette preparation method of the quick-fried pearl of packet water, it is characterised in that：Sky is first prepared using the thermoplastic techniques of plastics
Heart plastics ball pearl；Hollow ball shape plastic bead is injected water into using injection head again, and closes injection when extracting injection head
Mouthful；Hot blast drum processing is finally carried out, sealing compound is made to homogenize；Its specific preparation process is as follows：
（1）By the way of plastics thermoplastic, hollow ball shape plastic bead is first produced；
（2）Water is injected in hollow ball shape plastic bead, while applying hot melt adhesive in hollow ball shape plastic bead inlet；When injection finishes
Afterwards, hot melt adhesive is scratched by scraper, hot melt adhesive is closed into inlet, plays the role of sealing；
（3）Spheric granules after sealing is put into hot wind rotary oven；Hot melt in hot wind rotary oven on spheric granules
Glue can soften again, and make Surface uniformization by mutual rolling friction, form the regularity preferably quick-fried pearl of spherical packet water.
Preferably, the step（1）The outer diameter of middle plastic hollow plastics ball pearl is 2.6-3.8mm；Plastics wall thickness
For 0.1-0.15mm.
Preferably, the step（3）The heating temperature of middle hot wind rotary oven is 80-90 DEG C, wind speed 1-5m/s.
Preferably, the step（1）It is flexible plastic film or rigid plastics shell to make middle plastics.
Preferably, the step（2）It is middle that water filling is carried out using Dual Implantations head and applies hot melt adhesive；The Dual Implantations head packet
Include outer injection head, be located at outer injection head wall in, can be along the interior injection head of outer injection head telescopic moving；When past hollow ball shape plastics
In pearl when water filling, interior injection head leans out the cavity of outer injection head, punctures hollow ball shape plastic bead wall, carries out water filling；With outer injection
Head applies high temperature hot melt adhesive；After hollow ball shape plastic bead fills water, in interior injection head retraction cavity, then scraper carries out primary
The blade coating of hot melt adhesive makes the hot melt adhesive still in liquid be applied to inlet, to play the role of sealing；After completing blade coating,
Entire Dual Implantations head leaves the sphere for having been injected into water, and the quick-fried pearl of packet water is tentatively completed.
When cigarette of the suction using the filter tip, quick-fried pearl can be made to rupture by squeezing quick-fried pearl position, release and be sealed in
Moisture therein.These moisture can be absorbed moment by filter tow, and be eluted by flue gas when subsequent flue gas passes through, to
Play the role of flue gas moisturizing.
Compared with prior art, the invention has the advantages that：
The quick-fried pearl of plastic manufacturing cigarette packet water that the present invention can use current Water-saving effect best；Obtained quick-fried pearl shape rule
Then, it is easy to rack.Effectively cigarette smoke can be carried out adding water, improve cigarette smoking quality.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram when interior injection head is retracted in outer injection head cavity in the present invention.
Fig. 2 is the structural schematic diagram when interior injection head stretches out outside outer injection head cavity in the present invention.
Fig. 3 is the sectional view of interior injection head and outer injection head in the present invention.
In figure, injection head in 1-, the outer injection heads of 2-, 3- scrapers.
Specific implementation mode
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair
Bright range.In the examples where no specific technique or condition is specified, according to technology or condition described in document in the art
Or it is carried out according to product description.Reagents or instruments used without specified manufacturer is that can be obtained by buying
Conventional products.
Embodiment 1：
Preparation process：
1) flexible plastic film is processed into hollow ball shape plastic bead by by the way of plastics thermoplastic.Wherein hollow ball shape plastic bead
Outer diameter be 2.6mm；Plastics wall thickness is 0.1mm.
2) is injected water into, outer injection head is being noted simultaneously using Dual Implantations head as illustrated in the accompanying drawings from 1 to 3 by interior injection head
Entrance applies hot melt adhesive.After injection, so that hot melt adhesive is closed inlet by scraper movement, play the role of sealing.
3) spheric granules after sealing is put into hot wind rotary oven by.Temperature is 80-90 DEG C, and wind speed is generally 1m/s
The good quick-fried pearl particle of whole property is made in the homogenization of spherome surface in the lower hot melt adhesive that carries out.
The quick-fried pearl of preparation is added to by common process in cigarette filter, cigarette is made.It, can be light when aspirating the cigarette
Pine racks quick-fried pearl, completes the moisturizing to flue gas.It being detected through instrument, moisture increases by 47% in flue gas, and flue gas irritation significantly reduces,
Moisture feeling rises.
Embodiment 2：
Preparation process：
1) flexible plastic film is processed into hollow ball shape plastic bead by by the way of plastics thermoplastic.Wherein hollow ball shape plastic bead
Outer diameter be 3.8mm；Plastics wall thickness is 0.15mm.
2) is injected water into, outer injection head is being noted simultaneously using Dual Implantations head as illustrated in the accompanying drawings from 1 to 3 by interior injection head
Entrance applies hot melt adhesive.After injection, so that hot melt adhesive is closed inlet by scraper movement, play the role of sealing.
3) spheric granules after sealing is put into hot wind rotary oven by.Temperature is 80-90 DEG C, and wind speed is generally 5m/s
The good quick-fried pearl particle of whole property is made in the homogenization of spherome surface in the lower hot melt adhesive that carries out.
The quick-fried pearl of preparation is added to by common process in cigarette filter, cigarette is made.It, can be light when aspirating the cigarette
Pine racks quick-fried pearl, completes the moisturizing to flue gas.It being detected through instrument, moisture increases by 86% in flue gas, and flue gas irritation significantly reduces,
Moisture feeling rises.
Embodiment 3：
Preparation process：
1) flexible plastic film is processed into hollow ball shape plastic bead by by the way of plastics thermoplastic.Wherein hollow ball shape plastic bead
Outer diameter be 3.6mm；Plastics wall thickness is 0.13mm.
2) is injected water into, outer injection head is being noted simultaneously using Dual Implantations head as illustrated in the accompanying drawings from 1 to 3 by interior injection head
Entrance applies hot melt adhesive.After injection, so that hot melt adhesive is closed inlet by scraper movement, play the role of sealing.
3) spheric granules after sealing is put into hot wind rotary oven by.Temperature is 80-90 DEG C, and wind speed is generally 3m/s
The good quick-fried pearl particle of whole property is made in the homogenization of spherome surface in the lower hot melt adhesive that carries out.
The quick-fried pearl of preparation is added to by common process in cigarette filter, cigarette is made.It, can be light when aspirating the cigarette
Pine racks quick-fried pearl, completes the moisturizing to flue gas.It being detected through instrument, moisture increases by 65% in flue gas, and flue gas irritation significantly reduces,
Moisture feeling rises.
Embodiment 4：
Preparation process：
1) flexible plastic film is processed into hollow ball shape plastic bead by by the way of plastics thermoplastic.Wherein hollow ball shape plastic bead
Outer diameter be 3.0mm；Plastics wall thickness is 0.12mm.
2) is injected water into, outer injection head is being noted simultaneously using Dual Implantations head as illustrated in the accompanying drawings from 1 to 3 by interior injection head
Entrance applies hot melt adhesive.After injection, so that hot melt adhesive is closed inlet by scraper movement, play the role of sealing.
3) spheric granules after sealing is put into hot wind rotary oven by.Temperature is 80-90 DEG C, and wind speed is generally 2m/s
The good quick-fried pearl particle of whole property is made in the homogenization of spherome surface in the lower hot melt adhesive that carries out.
The quick-fried pearl of preparation is added to by common process in cigarette filter, cigarette is made.It, can be light when aspirating the cigarette
Pine racks quick-fried pearl, completes the moisturizing to flue gas.It being detected through instrument, moisture increases by 54% in flue gas, and flue gas irritation significantly reduces,
Moisture feeling rises.
Embodiment 5：
Preparation process：
1) flexible plastic film is processed into hollow ball shape plastic bead by by the way of plastics thermoplastic.Wherein hollow ball shape plastic bead
Outer diameter be 2.9mm；Plastics wall thickness is 0.11mm.
2) is injected water into, outer injection head is being noted simultaneously using Dual Implantations head as illustrated in the accompanying drawings from 1 to 3 by interior injection head
Entrance applies hot melt adhesive.After injection, so that hot melt adhesive is closed inlet by scraper movement, play the role of sealing.
3) spheric granules after sealing is put into hot wind rotary oven by.Temperature is 80-90 DEG C, and wind speed is generally 4m/s
The good quick-fried pearl particle of whole property is made in the homogenization of spherome surface in the lower hot melt adhesive that carries out.
The quick-fried pearl of preparation is added to by common process in cigarette filter, cigarette is made.It, can be light when aspirating the cigarette
Pine racks quick-fried pearl, completes the moisturizing to flue gas.It being detected through instrument, moisture increases by 61% in flue gas, and flue gas irritation significantly reduces,
Moisture feeling rises.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of preforming cigarette preparation method of the quick-fried pearl of packet water, it is characterised in that：It is first prepared using the thermoplastic techniques of plastics
Hollow ball shape plastic bead；Hollow ball shape plastic bead is injected water into using injection head again, and closes note when extracting injection head
Entrance；Hot blast drum processing is finally carried out, sealing compound is made to homogenize；Its specific preparation process is as follows：
（1）By the way of plastics thermoplastic, hollow ball shape plastic bead is first produced；
（2）Water is injected in hollow ball shape plastic bead, while applying hot melt adhesive in hollow ball shape plastic bead inlet；When injection finishes
Afterwards, hot melt adhesive is scratched by scraper, hot melt adhesive is closed into inlet, plays the role of sealing；
（3）Spheric granules after sealing is put into hot wind rotary oven；Hot melt in hot wind rotary oven on spheric granules
Glue can soften again, and make Surface uniformization by mutual rolling friction, form the regularity preferably quick-fried pearl of spherical packet water.
2. the preforming cigarette preparation method of the quick-fried pearl of packet water according to claim 1, it is characterised in that：The step（1）In
The outer diameter of plastic hollow plastics ball pearl is 2.6-3.8mm；Plastics wall thickness is 0.1-0.15mm.
3. the preforming cigarette preparation method of the quick-fried pearl of packet water according to claim 1, it is characterised in that：The step（3）In
The heating temperature of hot wind rotary oven is 80-90 DEG C, wind speed 1-5m/s.
4. the preforming cigarette preparation method of the quick-fried pearl of packet water according to claim 1, it is characterised in that：The step（1）Make
Middle plastics are flexible plastic film or rigid plastics shell.
5. the preforming cigarette preparation method of the quick-fried pearl of packet water according to claim 1, it is characterised in that：The step（2）In
Water filling is carried out using Dual Implantations head and applies hot melt adhesive；The Dual Implantations head includes outer injection head, be located in outer injection head wall,
It can be along the interior injection head of outer injection head telescopic moving；When the water filling into hollow ball shape plastic bead, interior injection head leans out outer injection
The cavity of head punctures hollow ball shape plastic bead wall, carries out water filling；Apply high temperature hot melt adhesive with outer injection head；When hollow ball shapes
After material pearl fills water, in interior injection head retraction cavity, then scraper carries out the blade coating of a hot melt adhesive, makes the heat still in liquid
Melten gel is applied to inlet, to play the role of sealing；After completing blade coating, entire Dual Implantations head leaves the ball for having been injected into water
Body, the quick-fried pearl of packet water are tentatively completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810532575.6A CN108451016B (en) | 2018-05-29 | 2018-05-29 | Preparation method of preformed water-containing blasting bead for cigarettes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810532575.6A CN108451016B (en) | 2018-05-29 | 2018-05-29 | Preparation method of preformed water-containing blasting bead for cigarettes |
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| Publication Number | Publication Date |
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| CN108451016A true CN108451016A (en) | 2018-08-28 |
| CN108451016B CN108451016B (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810532575.6A Active CN108451016B (en) | 2018-05-29 | 2018-05-29 | Preparation method of preformed water-containing blasting bead for cigarettes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109645561A (en) * | 2019-02-18 | 2019-04-19 | 重庆中烟工业有限责任公司 | Cigarette capsule and preparation method thereof and cigarette filter |
| CN109793275A (en) * | 2019-02-18 | 2019-05-24 | 重庆中烟工业有限责任公司 | A kind of preparation method and cigarette filter of cigarette packet capsule with diuresis promoting function |
| CN110250569A (en) * | 2019-06-25 | 2019-09-20 | 武汉微动机器人科技有限公司 | A kind of quick-fried online implanted device of pearl of horizontal transverse and longitudinal disk centrifugation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0276021B1 (en) * | 1987-01-23 | 1993-08-11 | Japan Tobacco Inc. | An easily breakable plastic capsule and a water filter for a cigarette using the same |
| CN1213714C (en) * | 1999-07-30 | 2005-08-10 | 沃纳-兰伯特公司 | Method and apparatus for sealing capsules and capsules suitable for use in said method and apparatus |
| CN1761445A (en) * | 2003-03-21 | 2006-04-19 | 沃纳-兰伯特有限责任公司 | Apparatus for and method of sealing capsules |
| CN102079420A (en) * | 2003-08-14 | 2011-06-01 | 3M埃斯佩股份公司 | Capsule for two-component materials |
| CN207151921U (en) * | 2017-07-04 | 2018-03-30 | 湖南中烟工业有限责任公司 | A kind of cigarette filter capsule, cigarette filter and cigarette |
-
2018
- 2018-05-29 CN CN201810532575.6A patent/CN108451016B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0276021B1 (en) * | 1987-01-23 | 1993-08-11 | Japan Tobacco Inc. | An easily breakable plastic capsule and a water filter for a cigarette using the same |
| CN1213714C (en) * | 1999-07-30 | 2005-08-10 | 沃纳-兰伯特公司 | Method and apparatus for sealing capsules and capsules suitable for use in said method and apparatus |
| CN1761445A (en) * | 2003-03-21 | 2006-04-19 | 沃纳-兰伯特有限责任公司 | Apparatus for and method of sealing capsules |
| CN102079420A (en) * | 2003-08-14 | 2011-06-01 | 3M埃斯佩股份公司 | Capsule for two-component materials |
| CN207151921U (en) * | 2017-07-04 | 2018-03-30 | 湖南中烟工业有限责任公司 | A kind of cigarette filter capsule, cigarette filter and cigarette |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109645561A (en) * | 2019-02-18 | 2019-04-19 | 重庆中烟工业有限责任公司 | Cigarette capsule and preparation method thereof and cigarette filter |
| CN109793275A (en) * | 2019-02-18 | 2019-05-24 | 重庆中烟工业有限责任公司 | A kind of preparation method and cigarette filter of cigarette packet capsule with diuresis promoting function |
| CN110250569A (en) * | 2019-06-25 | 2019-09-20 | 武汉微动机器人科技有限公司 | A kind of quick-fried online implanted device of pearl of horizontal transverse and longitudinal disk centrifugation |
| CN110250569B (en) * | 2019-06-25 | 2024-04-26 | 武汉微动机器人科技有限公司 | Horizontal type on-line implantation device for centrifugal explosion beads of transverse and longitudinal discs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108451016B (en) | 2021-01-29 |
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