CN102499478A - Filter tip stick and preparation method thereof - Google Patents
Filter tip stick and preparation method thereof Download PDFInfo
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- CN102499478A CN102499478A CN2011103462263A CN201110346226A CN102499478A CN 102499478 A CN102499478 A CN 102499478A CN 2011103462263 A CN2011103462263 A CN 2011103462263A CN 201110346226 A CN201110346226 A CN 201110346226A CN 102499478 A CN102499478 A CN 102499478A
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Abstract
The invention relates to a filter tip stick and a preparation method thereof. The filter tip stick is prepared from the following raw materials in part by weight: 100 parts of modified polylactic acid, 0.02 to 6 parts of quality modifier and 3 to 15 parts of bonding plasticizer. The physical appearance of the filter tip stick is remarkably improved, and filtration and absorption properties are greatly improved.
Description
Technical field
The present invention relates to the cigarette field, be specifically related to a kind of filter stick and preparation method thereof.
Background technology
Filter-tip development is the product that cigarette develops into certain phase.Filter tip is initial occur in, mainly be that the mouth shape parts as cigarette play decoration function.Along with the development of cigarette technology, and people are to the asking of low harm cigarette most, and filter tip is converted into a part indispensable the cigarette from dispensable status gradually, and has born the function of reducing tar and reducing harm.
At present; The filter-tip material that commercialization is used on the domestic market is mainly cellulose acetate fibre and polypropylene fibre; Nearly 300,000 tons of total amount, wherein the consumption of cellulose acetate fibre has accounted for more than 80%, but cellulose acetate fibre and polypropylene fibre have following shortcoming:
The cellulose acetate filter tip has following deficiency: 1) derive from timber (growth cycle is generally greater than 5 years), a large amount of use can be destroyed ecological environment; 2) although the cellulose acetate degradable, degradation cycle usually surpasses 4 years, so abandoning of filter stick can be caused certain environmental pollution; 3) adopt the solution spinning spinning, complex manufacturing has environmental issues such as solvent acetone volatilization recovery; 4) technology, equipment, correlation technique and the main dependence on import of part tow finished product.
There are many weak points equally in the polypropylene filter mouth: 1) polypropylene derives from the non-renewable resources oil, does not meet global sustainable development and domestic national conditions; 2) polypropylene is a non-polar material, and absorption property is relatively poor, and the filter stick strainability that obtains is poor, is unfavorable for health; 3) owing to the nonpolar and high-crystallinity of polypropylene fibre, bond properties is poor, and tow is bonded into the complex process of filter stick.
Because the main dependence on import of cellulose acetate fibre, also there is deficiency in polypropylene, so the market PLA of having derived is used in the cigarette as substitution material.
PLA is used for the filter tip of cigarette, and following advantage is arranged: 1) PLA is the polyester construction of polarity, and absorption property is excellent, and alternative cellulose acetate is used in the medium-to-high grade cigarette; 2) biodegradable, degradation cycle short (in 1 year under the landfill condition degradable be carbon dioxide and water); 3) source is renewable, and primary raw material lactic acid be the tunning of starch, and starch source has been alleviated energy crisis in reproducible crops, has protected ecological environment, and has realized the carbon cycle of earth surface, has reduced greenhouse gas emission; 4) production technology is simple, prepares acid fiber by polylactic through melt spinning method, and the production line of polypropylene tows capable of using has solved the environmental issue of cellulose acetate tow production process complicacy and acetone solvent.
One Chinese patent application 200610131699.0 (publication number is CN 1961765A) discloses a kind of technology of utilizing lactide acid polymer resin manufacture cigarette filter filament and filter stick for cigarettes; The resin that adopts in this technical scheme is a specification of PLA or the mixture of a plurality of specifications; Or lactide and caprolactone, lactide, or the copolymer of lactide and caprolactone and glycolide.
One Chinese patent application 200910241645.3 (publication number is CN 102080278A) adopts poly butylene succinate copolymer (PBS) and copolymer of poly lactic acid (PLA) to unite use, and then improves the performance of PLA.
One Chinese patent application 200910241643.4 (publication number is CN 102080275A) discloses a kind of biodegradable cigarette and has used fibrous material; Form by non-internal ester monomer modification by copolymerization PLA, stabilizing agent; Wherein non-internal ester monomer modification by copolymerization PLA is the non-lactone type monomer chain link that contains the 1-30% of total chain number in the strand, and all the other are the high molecular polymer of lactic acid link.
Above-mentioned two patents have been mentioned the forming method of relevance filtering mouth rod; Bonding plasticizer dosage is 0.5-15%, and described bonding plasticizer mainly comprises trimellitic acid glyceryl ester, diethylene glycol acetate, glyceride lactate, CMS glue, SGA, polyethylene glycol glue, collagen glue etc.; Applying glue again after bonding plasticizer dissolves with appropriate solvent, the solvent of mentioning is mainly the aqueous solution of ethanol or ethanol.
One Chinese patent application 200710055310.3 (publication number is 101023811A) discloses a kind of PLA filter stick for cigarettes and preparation method thereof.This method comprises: shredding, and with the shredding on commercially available shredding gluing machine of PLA pipe tobacco, spreading width is 20-30cm; Bonding, use the whirl coating humidifier of shredding gluing machine, adhesive is sprayed onto on the bunch fiber surface of having launched; Parcel and cutting, the fibre bundle that uses commercially available filter-stick forming device will apply adhesive is rolled into rod, comprises wrapping up in paper, trimming frictioning, press bonding and cutting into designated length; Post processing is placed 24-48h in room temperature.Said adhesive is triacetyl glycerine or quick-dry type cellulose acetate solvent.
The cigarette filter that existing PLA spinning boundling rolls into has following shortcoming:
1) aspect physical index, has that heat is subsided, the pyrocondensation head, hardness is low and problem such as resistance to suction poor stability.
2) aspect chemical filtering absorption; Compare with the filter stick of cellulose acetate fibre preparation; The PLA filter stick remains to be improved to some specific harmful substance absorption properties; Phenol, hydrogen cyanide, ammonia and crotonaldehyde index as in seven kinds of harmful substances of tobacco are all poor, compare the result and see table 1:
Table 1: seven kinds of harmful substance absorption property contrasts (open type resistance to suction 1100Pa, circumference 24.50mm)
| Index | The fine filter stick of vinegar | The PLA filter stick | Unit |
| Carbon monoxide | 14.7 | 14.9 | Mg/ props up |
| Hydrogen cyanide | 175.7 | 194.5 | μ g/ props up |
| NNK | 4.45 | 4.42 | Ng/ props up |
| Ammonia | 4.88 | 5.17 | μ g/ props up |
| Benzo [a] pyrene | 9.1 | 9.2 | Ng/ props up |
| Phenol | 12.38 | 19.54 | μ g/ props up |
| Crotonaldehyde | 24.89 | 26.50 | μ g/ props up |
| The harmfulness index | 9.3 | 10.3 |
Therefore, need overcome above-mentioned shortcoming of the prior art, provide a kind of physical index and absorption property excellent filter stick.
Summary of the invention
The object of the present invention is to provide the filter stick that a kind of polydactyl acid processes and the cigarette of tipping thereof, solved physical appearance and absorption property deficiency that prior art exists, also improved " article suction " index of filter stick.
Filter stick provided by the invention contains the raw material of following weight portion: 100 parts of polydactyl acids, quality modifier 0.02-6 part, bonding plasticizer 3-15 part.
Wherein:
Said polydactyl acid is processed by the composition of following weight portion: one or more in modified porous starch 0.05-5 part, shitosan 0.01-3 part, nano silicon 0.05-2.5 part or nano titanium oxide 0.1-0.6 part; Surplus is a PLA, adds up to 100 parts; Wherein said modified porous starch is a kind of novel converted starch; It is that the enzyme with living amylase activity is being lower than the cellular product of porous that acts on living starch under the gelatinization point and form; It is the aperture about 1 μ m that the porous-starch surface is covered with diameter; Aperture is goed deep into to the center by the surface, and the volume in hole accounts for about 50% of particle volume.
Said quality modifier is selected from one or more in soluble phosphoric acid calcium 0.02-1.5 part, pyrrolidone sodium carboxylate 0.05-2 part or citric acid 0.01-2.5 part.
Said bonding plasticizer is selected from one or more in propene carbonate, dimethyl malenate, TC acetate, diacetyl succinic acid dimethyl ester or the dipropyl carbonate.
The present invention also provides a kind of method for preparing filter stick, and the method includes the steps of:
1) preparation of polydactyl acid tow;
2) extract: the extraction of PLA tow highly is a 2.0-3.2 rice;
3) shredding: tow is carried out shredding, and the pressure of stablizing roller is 0.03-0.08MPa, and the pressure of thread roller is 0.10-0.25MPa, and the shredding of moulding is than being 1.10-1.60;
4) applying glue: the tow surface applies quality modifier and bonding plasticizer;
5) bag paper;
6) cutting tipping: cut, Cutting Length on request; The filter stick of fixed length is hinged with cigarette on the cigarette tipping machine.
In the said method, wherein:
The preparation method of step 1) polydactyl acid tow is:
Take by weighing in modified porous starch 0.05-5 part, shitosan 0.01-3 part, nano silicon 0.05-2.5 part or nano titanium oxide 0.1-0.6 part one or more earlier; Mix with PLA; Make that its gross weight is 100 parts; Then the composition that takes by weighing is mixed obtaining the polydactyl acid particle through the twin-screw melt pelletization, processing temperature is 170-210 ℃; Then with polydactyl acid through before spinning, drawing-off, curling and the drying and shaping prepared obtains tow;
Step 3) shredding ratio is preferably 1.30-1.50;
In the process of tow shredding, the size of shredding ratio and filtering rod with go out excellent rate direct correlation, when shredding when too small, tow shredding imperfection, the filtering rod of equal quality reduces, and causes the excellent rate of going out of tow to reduce; When shredding when excessive, the PLA tow is easy to generate collaring, has destroyed the stability of producing, through the suitable shredding of test contrast than being 1.10-1.60, preferred 1.30-1.50.
In the step 4), the mode that applies of quality modifier: direct atomizing applies or is made into aqueous solution atomizing and applies;
Bag paper bag in the step 5) is drawn together and is wrapped up in paper, applying glue and three steps of heat bonding, and wherein parcel can select common filter stick with paper or the high paper that passes through with paper, the preferred high paper that passes through; Find through test; The heat of filter stick is subsided problem except outside the Pass having with factors such as filament denier, clean tow weight; The air permeability of filter stick also is to influence the important indicator that filter stick heat is subsided; Along with the increase of air permeability, the trend that heat is subsided reduces, so the PLA filter stick preferentially adopts the high paper that passes through to use paper as parcel;
The applying glue of step 6) adopts center line gluing and paper to seal the gluing complex method, through increasing the drop-head phenomenon of center line gluing can obviously improvement PLA filter stick;
Heat bonding in the step 5): the heat bonding temperature that paper seals is 150-200 ℃, crosses when low when the heat bonding temperature, and starting up speed is difficult to rise, and when the heat bonding temperature was too high, the tow of sealing part was prone to the phenomenon that hardens.
Filter stick provided by the invention has following advantage:
1, in the filter tip provided by the invention:
The polydactyl acid that uses is the polyester construction of polarity, and absorption property is excellent.The PLA biodegradable, degradation cycle is short, has solved the long deficiency of polypropylene non-degradable and cellulose acetate degradation cycle; The PLA source is renewable, and primary raw material lactic acid is the tunning of starch, and starch source has been alleviated energy crisis in reproducible crops, has protected ecological environment, and has realized the carbon cycle of earth surface having reduced greenhouse gas emission; The PLA production technology is simple, prepares the PLA tow through melt spinning method, and the production line of polypropylene tows capable of using has solved cellulose acetate tow production process complicacy and solvent environmental issue;
The bonding plasticizer that the present invention uses: make the hardness of filter stick obviously improve;
The quality modifier that the present invention uses: can know that by embodiment and Comparative Examples data the interpolation of quality modifier has obviously improved the physical appearance and the absorption property of filter stick.
2, the preparation method of filter stick provided by the invention compared with prior art increased the operation that applies of quality modifier, and the interpolation of quality modifier has promoted the quality of filter stick.
3, filter stick pyrocondensation head provided by the invention and heat are subsided, and deficiency is obvious to be improved, and filtering rod stability improves; Filtration Adsorption performance to seven kinds of harmful substances of flue gas is significantly improved; The harmfulness index descends significantly, and is suitable with the fine filter stick of vinegar, and the Filtration Adsorption of carbonyls is had the effect of improvement; Part index number obviously is better than the fine filter stick of vinegar, and the Filtration Adsorption of main flume is had positive effect.
4, cigarette " article suction " effect of polydactyl acid filter stick tipping is obviously improved, and delicate mouthfeel, nonirritant, sufficient, the coordination of perfume quantity are suitable with the cellulose acetate filter stick.
The specific embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Embodiment 1: filter stick
1, spinning comprises with the polydactyl acid raw material: 98.6 kilograms of PLAs, 0.1 kilogram of modified porous starch, 1.0 kilograms of nano silicons, 0.3 kilogram of nano titanium oxide.
2, preparation method:
1) preparation of tow: take by weighing 98.6 kilograms of PLAs, 0.1 kilogram of modified porous starch, 1.0 kilograms of nano silicons, 0.3 kilogram of nano titanium oxide earlier; Mix through the twin-screw melt pelletization then and obtain the polydactyl acid particle; Processing temperature is 190 ℃, is prepared into tow then, wherein monofilament linear density 3.5dtex; Tow total linear density 3.85ktex, 26/25mm of crispation number;
2) extract: filter stick formation is carried out in shredding on the ZL23 filter-stick forming device, moulding process is: shredding is stablized roller pressure 0.05MPa than 1.35, thread roller pressure 0.05MPa;
3) applying glue:
Earlier 0.5 kilogram of soluble phosphoric acid calcium, 0.3 kilogram of pyrrolidone sodium carboxylate and citric acid are mixed with the aqueous solution (concentration is 0.5g/ml) atomizing for 0.1 kilogram and are applied to the tow surface, and then apply 6.2 kilograms of propene carbonates;
4) bag paper: bag paper is selected the high paper that passes through for use, and center line gluing and paper sealing compound are compound, 180 ℃ of heat bonding temperature; Start speed 120m/min.
5) cutting: the index of processing filter stick: length 100mm, circumference 24.5mm, resistance to suction 2800Pa (resistance to suction SD6.2), under 86%, 50 ℃ of condition of hardness under 0.6%, 50 ℃ condition of 30min pyrocondensation 30min heat subside 0.4%.
3, the filter stick absorption property is estimated:
Make an experiment on the filter stick tipping certain domestic brand cigarette, table 2 is seen in concrete evaluation:
The filter stick evaluation of table 2: embodiment 1
| Seven kinds of harmful substances | Index | Carbonyl material | Index | TPM | Index |
| Carbon monoxide (mg/ props up) | 14.8 | Formaldehyde (μ g/ props up) | 73.7 | Nicotine (mg/ props up) | 1.18 |
| Hydrogen cyanide (μ g/ props up) | 171.2 | Acetaldehyde (μ g/ props up) | 572.3 | Tar (mg/ props up) | 12.30 |
| NNK (ng/ props up) | 4.41 | Acetone (μ g/ props up) | 115.8 | Moisture content (mg/ props up) | 2.73 |
| Ammonia (μ g/ props up) | 4.86 | Methacrylaldehyde (μ g/ props up) | 31.0 | ||
| Benzo [a] pyrene (ng/ props up) | 8.3 | Propionic aldehyde (μ g/ props up) | 45.6 | ||
| Phenol (μ g/ props up) | 12.45 | 2-butanone (μ g/ props up) | 63.9 | ||
| Crotonaldehyde (μ g/ props up) | 25.2 | Butyraldehyde (μ g/ props up) | 25.0 |
Embodiment 2: filter stick
1, spinning comprises with the polydactyl acid raw material: 98.4 kilograms of PLAs, 0.7 kilogram of shitosan, 0.5 kilogram of nano silicon, 0.4 kilogram of nano titanium oxide.
2, preparation method:
1) preparation of tow: take by weighing 98.4 kilograms of PLAs, 0.7 kilogram of shitosan, 0.5 kilogram of nano silicon, 0.4 kilogram of nano titanium oxide earlier; Mix through the twin-screw melt pelletization then and obtain the polydactyl acid particle; Processing temperature is 185 ℃, processes tow then, the tow monofilament linear density 3.2dtex that makes; Tow total linear density 4.16ktex, 25/25mm of crispation number;
2) extract: filter stick formation is carried out in shredding on the ZL23 filter-stick forming device, moulding process is: shredding is stablized roller pressure 0.05MPa than 1.30, thread roller pressure 0.05MPa;
3) applying glue:
Earlier 0.1 kilogram of soluble phosphoric acid calcium, 0.5 kilogram of pyrrolidone sodium carboxylate and citric acid are mixed with the aqueous solution (concentration is 0.5g/ml) atomizing for 0.2 kilogram and are applied to the tow surface, apply 5.5 kilograms of TC acetates then;
4) bag paper: select the high paper that passes through, center line gluing and paper sealing compound are compound, 180 ℃ of heat bonding temperature; Start speed 120m/min.
5) cutting: the index of processing filter stick: length 100mm, circumference 24.5mm, resistance to suction 2800Pa (resistance to suction SD6.0), under 90%, 50 ℃ of condition of hardness under 0.3%, 50 ℃ condition of 30min pyrocondensation 30min heat subside 0.2%.
3, the filter stick absorption property is estimated:
Make an experiment on the filter stick tipping certain domestic brand cigarette, table 3 is seen in concrete evaluation:
The filter stick evaluation of table 3: embodiment 2
| Seven kinds of harmful substances | Index | Carbonyl material | Index | TPM | Index |
| Carbon monoxide (mg/ props up) | 14.5 | Formaldehyde (μ g/ props up) | 73.0 | Nicotine (mg/ props up) | 1.17 |
| Hydrogen cyanide (μ g/ props up) | 170.7 | Acetaldehyde (μ g/ props up) | 571.5 | Tar (mg/ props up) | 11.90 |
| NNK (ng/ props up) | 4.40 | Acetone (μ g/ props up) | 115.6 | Moisture content (mg/ props up) | 2.70 |
| Ammonia (μ g/ props up) | 4.82 | Methacrylaldehyde (μ g/ props up) | 31.4 | ||
| Benzo [a] pyrene (ng/ props up) | 8.1 | Propionic aldehyde (μ g/ props up) | 45.3 | ||
| Phenol (μ g/ props up) | 12.21 | 2-butanone (μ g/ props up) | 63.5 | ||
| Crotonaldehyde (μ g/ props up) | 24.9 | Butyraldehyde (μ g/ props up) | 24.9 |
Embodiment 3: filter stick
1, spinning comprises with the polydactyl acid raw material: 98.9 kilograms of PLAs, 0.7 kilogram of shitosan, 0.4 kilogram of nano titanium oxide.
2, preparation method:
1) preparation of tow: 0.4 kilogram of 98.9 kilograms of PLA, 0.7 kilogram of nano titanium oxide of shitosan are mixed obtaining the polydactyl acid particle earlier through the twin-screw melt pelletization; Processing temperature is 195 ℃; Process tow then; The tow monofilament linear density 3.2dtex that makes, tow total linear density 4.16ktex, 25/25mm of crispation number.
2) extract: filter stick formation is carried out in shredding on the ZL23 filter-stick forming device, moulding process is: shredding is stablized roller pressure 0.05MPa than 1.30, thread roller pressure 0.05MPa;
3) applying glue:
Earlier pyrrolidone sodium carboxylate is mixed with the aqueous solution (concentration is 0.5g/ml) atomizing with 0.2 kilogram of citric acid for 0.5 kilogram and is applied to the tow surface, apply 5.0 kilograms of propene carbonates then;
4) bag paper: high paper center line gluing thoroughly and paper sealing compound are compound, 180 ℃ of heat bonding temperature; Start speed 120m/min.
5) cutting: the index of processing filter stick: length 100mm, circumference 24.5mm, resistance to suction 2800Pa (resistance to suction SD7.1), under 85%, 50 ℃ of condition of hardness under 0.8%, 50 ℃ condition of 30min pyrocondensation 30min heat subside 0.7%.
3, the filter stick absorption property is estimated:
Make an experiment on the filter stick tipping certain domestic brand cigarette, table 4 is seen in concrete evaluation:
The filter stick evaluation of table 4: embodiment 3
| Seven kinds of harmful substances | Index | Carbonyl material | Index | TPM | Index |
| Carbon monoxide (mg/ props up) | 14.7 | Formaldehyde (μ g/ props up) | 74.5 | Nicotine (mg/ props up) | 1.19 |
| Hydrogen cyanide (μ g/ props up) | 173.2 | Acetaldehyde (μ g/ props up) | 573.6 | Tar (mg/ props up) | 12.48 |
| NNK (ng/ props up) | 4.41 | Acetone (μ g/ props up) | 116.2 | Moisture content (mg/ props up) | 2.65 |
| Ammonia (μ g/ props up) | 4.89 | Methacrylaldehyde (μ g/ props up) | 31.9 | ||
| Benzo [a] pyrene (ng/ props up) | 8.7 | Propionic aldehyde (μ g/ props up) | 45.7 | ||
| Phenol (μ g/ props up) | 12.45 | 2-butanone (μ g/ props up) | 64.0 | ||
| Crotonaldehyde (μ g/ props up) | 25.1 | Butyraldehyde (μ g/ props up) | 25.3 |
Comparative Examples 1: filter stick
1, tow is with not explanation in the polylactic acid raw material patent, and present case adopts the tow raw material of one Chinese patent application 200610131699.0 (publication number is 1961765A) embodiment 1, the preparation method of Chinese patent 200710055310.3.
2, preparation method:
By the tow (control tow index is identical with embodiment 3) that above-mentioned raw materials prepares, monofilament linear density 3.2dtex, tow total linear density 4.16ktex, 25/25mm of crispation number.On the YL11 filter-stick forming device, carry out filter stick formation, moulding process is:
Shredding is stablized roller pressure 0.05MPa than 1.30, thread roller pressure 0.05MPa; The tow surface applies triacetyl glycerine, and weight ratio is 8% of a tow net weight; D level filter stick paper, 170 ℃ of heat bonding temperature; Start speed 120m/min.
Process the index (index of control length, circumference and resistance to suction is identical with embodiment 3) of filter stick: length 100mm; Circumference 24.5mm, resistance to suction 2800Pa (resistance to suction SD7.9), hardness 77%; Under 50 ℃ of conditions under 1.9%, 50 ℃ condition of 30min pyrocondensation 30min heat subside 2.1%.
3, the filter stick absorption property is estimated:
Make an experiment on the filter stick tipping certain domestic brand cigarette, table 5 is seen in concrete evaluation:
Table 5: the filter stick evaluation of Comparative Examples 1
| Seven kinds of harmful substances | Index | Carbonyl material | Index | TPM | Index |
| Carbon monoxide (mg/ props up) | 14.9 | Formaldehyde (μ g/ props up) | 77.0 | Nicotine (mg/ props up) | 1.23 |
| Hydrogen cyanide (μ g/ props up) | 193.5 | Acetaldehyde (μ g/ props up) | 576.2 | Tar (mg/ props up) | 14.41 |
| NNK (ng/ props up) | 4.42 | Acetone (μ g/ props up) | 117.5 | Moisture content (mg/ props up) | 3.32 |
| Ammonia (μ g/ props up) | 5.19 | Methacrylaldehyde (μ g/ props up) | 32.5 | ||
| Benzo [a] pyrene (ng/ props up) | 9.2 | Propionic aldehyde (μ g/ props up) | 47.1 | ||
| Phenol (μ g/ props up) | 19.48 | 2-butanone (μ g/ props up) | 65.6 | ||
| Crotonaldehyde (μ g/ props up) | 26.23 | Butyraldehyde (μ g/ props up) | 26.9 |
Comparative Examples 2: the raw material of the embodiment of the invention 1, the prepared of CN200710055310.3
1, spinning comprises with the polydactyl acid raw material: 98.6 kilograms of PLAs, 0.1 kilogram of modified porous starch, 1.0 kilograms of nano silicons, 0.3 kilogram of nano titanium oxide.
2, preparation method (not adding quality modifier among the preparation method):
By the tow (control tow index is identical with embodiment 3) that above-mentioned raw materials prepares, monofilament linear density 3.2dtex, tow total linear density 4.16ktex, 25/25mm of crispation number.On the YL11 filter-stick forming device, carry out filter stick formation, moulding process is:
Shredding is stablized roller pressure 0.05MPa than 1.30, thread roller pressure 0.05MPa; The tow surface applies triacetyl glycerine, and weight ratio is 8% of a tow net weight; D level filter stick paper, 170 ℃ of heat bonding temperature; Start speed 120m/min.
Process the index (index of control length, circumference and resistance to suction is identical with embodiment 3) of filter stick: length 100mm; Circumference 24.5mm, resistance to suction 2800Pa (resistance to suction SD7.7), hardness 79%; Under 50 ℃ of conditions under 1.7%, 50 ℃ condition of 30min pyrocondensation 30min heat subside 1.5%.
3, the filter stick absorption property is estimated:
Make an experiment on the filter stick tipping certain domestic brand cigarette, table 6 is seen in concrete evaluation:
Table 6: the filter stick evaluation of Comparative Examples 2
| Seven kinds of harmful substances | Index | Carbonyl material | Index | TPM | Index |
| Carbon monoxide (mg/ props up) | 14.8 | Formaldehyde (μ g/ props up) | 76.5 | Nicotine (mg/ props up) | 1.22 |
| Hydrogen cyanide (μ g/ props up) | 193.0 | Acetaldehyde (μ g/ props up) | 576.0 | Tar (mg/ props up) | 14.13 |
| NNK (ng/ props up) | 4.41 | Acetone (μ g/ props up) | 117.2 | Moisture content (mg/ props up) | 3.06 |
| Ammonia (μ g/ props up) | 5.15 | Methacrylaldehyde (μ g/ props up) | 32.4 | ||
| Benzo [a] pyrene (ng/ props up) | 9.1 | Propionic aldehyde (μ g/ props up) | 46.7 | ||
| Phenol (μ g/ props up) | 19.42 | 2-butanone (μ g/ props up) | 65.1 | ||
| Crotonaldehyde (μ g/ props up) | 26.16 | Butyraldehyde (μ g/ props up) | 26.3 |
Experimental example: overall assessment
Experimental example 1-3 of the present invention and Comparative Examples 1,2 and the fine filter stick of existing vinegar are compared.Filter stick in existing vinegar fiber cellulose fiber filter stick, the patent and PLA filter stick of the present invention are compared:
The evaluation method of cigarette physical index and absorption property: comprise the industry standard and the national standard of cigarette, like GB/T5606.1-2004, GB/T16447-2004, GB/T19069-2004, GB/T23355-2009, GB/T 23203.1-2008, GB/T 23356-2009.
1, physical index (pyrocondensation head, heat are subsided, resistance to suction stability etc.), see table 7:
Table 7: physical index contrast (open type resistance to suction 1100Pa, circumference 24.50mm)
Can find out from table 7: Comparative Examples 1 and 2 tangible pyrocondensation head occurs and heat is subsided, filter stick hardness is on the low side, and the pyrocondensation head of the embodiment of the invention and heat are subsided and obviously improved, and filtering rod stability improves.
2, make an experiment the physics conventional index identical (open type resistance to suction 1100Pa, circumference 24.50mm) of control comparative sample on the certain domestic brand cigarette.
The result sees table 8:
Table 8: cigarette mainly contains the harmful substances analysis result for seven kinds
Can find out from table 8: the filter stick that embodiment processes is significantly improved to the Filtration Adsorption performance of seven kinds of harmful substances of flue gas; Especially hydrogen cyanide, ammonia, BaP and phenol index are improved bigger; The harmfulness index descends significantly; The fine filter stick of whole absorption property and vinegar is suitable, and wherein the BaP absorption index obviously is superior to the fine filter stick of vinegar.
3, make an experiment the physics conventional index identical (open type resistance to suction 1100Pa, circumference 24.50mm) of control comparative sample on the certain domestic brand cigarette.
The result sees table 9:
Table 9: cigarette carbonyls analysis result
Can be found out by table 9: the PLA filter stick is superior to the fine filter stick of vinegar to the absorption property of carbonyls, especially on the absorption index of formaldehyde, acetaldehyde and butyraldehyde.
Embodiment is for Comparative Examples, and the residue of various carbonyls all descends to some extent, and whole adsorption filtration performance improves.
4, make an experiment on the certain domestic brand cigarette, the physics conventional index identical (open type resistance to suction 1100Pa, circumference 24.50mm) of control comparative sample, puff number (Puff/ props up) is controlled at 7.0-7.1.
Table 10 as a result:
Table 10: cigarette mainstream flue gas analysis result
Can find out from table 10: compare with Comparative Examples, the filter stick that embodiment relates to has clear improvement to the Filtration Adsorption of main flume, and nicotine and tar all have certain reduction in the flue gas, and global index is suitable with the fine filter stick of vinegar.
Though, used general explanation, the specific embodiment and test in the preceding text, the present invention has been done detailed description, on basis of the present invention, can make some modifications or improvement to it, this will be apparent to those skilled in the art.Therefore, these modifications or the improvement on the basis of not departing from spirit of the present invention, made all belong to the scope that requirement of the present invention is protected.
Claims (9)
1. filter stick, this filter stick contains the raw material of following weight portion: 100 parts of polydactyl acids, quality modifier 0.02-6 part, bonding plasticizer 3-15 part.
2. filter stick according to claim 1; It is characterized in that; Said polydactyl acid is that the composition of following weight portion is processed: one or more in modified porous starch 0.05-5 part, shitosan 0.01-3 part, nano silicon 0.05-2.5 part or nano titanium oxide 0.1-0.6 part; Surplus is a PLA, adds up to 100 parts.
3. filter stick according to claim 1 is characterized in that, said bonding plasticizer is selected from one or more in propene carbonate, dimethyl malenate, TC acetate, diacetyl succinic acid dimethyl ester or the dipropyl carbonate.
4. filter stick according to claim 1 is characterized in that, said quality modifier is selected from one or more in soluble phosphoric acid calcium, pyrrolidone sodium carboxylate or the citric acid.
5. filter stick according to claim 4 is characterized in that, said quality modifier is selected from one or more in soluble phosphoric acid calcium 0.02-1.5 part, pyrrolidone sodium carboxylate 0.05-2 part or citric acid 0.01-2.5 part.
6. a method for preparing each described filter stick of claim 1-5 is characterized in that, this method comprises the steps:
1) preparation of polydactyl acid tow;
2) extract: the extraction of PLA tow highly is a 2.0-3.2 rice;
3) shredding: tow is carried out shredding, and the pressure of stablizing roller is 0.03-0.08MPa, and the pressure of thread roller is 0.10-0.25MPa, and the shredding of moulding is than being 1.10-1.60;
4) applying glue: the tow surface applies quality modifier and bonding plasticizer;
5) bag paper;
6) cutting tipping.
7. method according to claim 6 is characterized in that, said step 3) shredding is than being 1.30-1.50.
8. method according to claim 6 is characterized in that, the mode that applies of said step 4) quality modifier applies or is made into aqueous solution atomizing for directly atomizing and applies.
9. method according to claim 6 is characterized in that, comprises in the said step 5) wrapping up in paper, applying glue and three steps of heat bonding, and wherein applying glue adopts center line gluing and paper to seal the gluing complex method.
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| CN 201110346226 CN102499478B (en) | 2011-11-04 | 2011-11-04 | Filter tip stick and preparation method thereof |
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| CN102499478B CN102499478B (en) | 2013-10-09 |
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| CN108703412A (en) * | 2018-06-03 | 2018-10-26 | 上海同巽环保科技有限公司 | A kind of filter stick of safety and environmental protection and preparation method thereof |
| CN109846085A (en) * | 2018-12-25 | 2019-06-07 | 杨成云 | A kind of preparation method of netted polylactic acid silk screen cigarette filter tip rod |
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Application publication date: 20120620 Assignee: Hangzhou Dehong Technology Co.,Ltd. Assignor: MAANSHAN TONGJIELIANG BIOLOGICAL MATERIAL CO.,LTD. Contract record no.: X2022330000058 Denomination of invention: The invention relates to a filter rod and a preparation method thereof Granted publication date: 20131009 License type: Common License Record date: 20220318 |