CN103169154B - Compound filter tip bar and preparation method thereof - Google Patents

Compound filter tip bar and preparation method thereof Download PDF

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Publication number
CN103169154B
CN103169154B CN201110440019.4A CN201110440019A CN103169154B CN 103169154 B CN103169154 B CN 103169154B CN 201110440019 A CN201110440019 A CN 201110440019A CN 103169154 B CN103169154 B CN 103169154B
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tow
cellulose acetate
pla
shredding
filter
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CN103169154A (en
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王秦峰
许克强
吕效东
陈瑞锋
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MA'ANSHAN T-J-L BIOMATERIALS Co Ltd
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MA'ANSHAN T-J-L BIOMATERIALS Co Ltd
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Abstract

The invention relates to a compound filter tip bar and a preparation method of the compound filter tip bar. The compound filter tip bar comprises, by weight, 90-98 parts of compound silk bundles and 2-10 parts of plasticiser glycerol triacetate. A cigarette connected with the filter tip bar is free from changes of remained taste, basically free from changes of aroma quality, harmonious, and soft in mouthfeel. 'Taste' results of the cigarette connected with the filter tip bar are the same with those of a cigarette connected with a cellulose acetate filter tip bar.

Description

A kind of compound filter tip bar and preparation method thereof
Technical field
The present invention relates to cigarette field, be specifically related to a kind of compound filter tip bar and preparation method thereof.
Background technology
At present, on domestic market, the filter-tip material of Commercialization application 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:
Cellulose acetate filter mouth has following deficiency: 1) derive from timber (growth cycle is generally greater than 5 years), a large amount of use can destroy ecological environment; 2) although cellulose acetate degradable, degradation cycle is usually more than 4 years, and therefore abandoning of filter stick can cause certain environmental pollution; 3) adopt solution spinning spinning, complex manufacturing, have the environmental issues such as solvent acetone volatilization recovery; 4) technique, equipment, correlation technique and the main dependence on import of part tow finished product.
There is many weak points in polypropylene filter mouth: 1) polypropylene derives from non-renewable resources oil equally, do not meet Global Sustainable Development and domestic national conditions; 2) polypropylene is non-polar material, and absorption property is poor, and the filter stick strainability obtained is poor, is unfavorable for health; 3) due to the nonpolar of polypropylene fibre and high-crystallinity, 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, polypropylene is Shortcomings also, therefore market derived PLA as an alternative material be used in cigarette.
PLA is used for the filter tip of cigarette, has following advantage: 1) PLA is the polyester construction of polarity, and absorption property is excellent, and alternative cellulose acetate is used in medium-to-high grade cigarette; 2) biodegradable, degradation cycle short (in 1 year, degradable is carbon dioxide and water under landfill condition); 3) originate renewable, primary raw material lactic acid, be the tunning of starch, and starch source is in reproducible crops, alleviates energy crisis, protects ecological environment, and achieves the carbon cycle of earth surface, decrease greenhouse gas emission; 4) production technology is simple, prepares acid fiber by polylactic, can utilize the production line of polypropylene tows by melt spinning method, solves the environmental issue of cellulose acetate tow production process complexity and acetone solvent; 5) domesticize completely from technical equipment to production.
Although PLA is used for cigarette filter above-mentioned many merits, due to the particularity of cigarette industry, is professional person and common smoker " smoking " effect for the most important evaluation index of filter tip.And any one filter tip new material all can cause the change of flue gas mouthfeel; therefore; existing brand cigarette substitutes cellulose acetate tow completely with PLA tow and has certain market risk; tobacco unit uses the scale of poly-lactic acid material to be needed to observe the trial state on new brand cigarette, needs the long time cycle.
In order to accelerate the application of PLA in cigarette field, the value of PLA is developed by the mode of Some substitute, namely PLA tow Some substitute cellulose acetate tow is used, material of main part is still cellulose acetate tow, ensures that filter-tip " smoking " effect significant change does not occur by the addition controlling PLA tow.
Chinese patent application 201010151504.5 (publication number is CN 101816456A) discloses a kind of cigarette filter tip composite material, and wherein the mass fraction of acid fiber by polylactic is 30-90%, and the mass fraction of cellulose acetate fibre is 10-70%, patent also relate to the preparation method of composite, first by after polyactide fiber filament and cellulose acetate fibre long filament difference fibrillation, be 30-90% by the mass fraction of acid fiber by polylactic, the mass fraction of cellulose acetate fibre is that the proportioning of 10-70% is paved into two-layer, then air-spray is adopted vertically to spray or needle point method, two-layer fiber is made mutually to carry out physical entanglement, thereafter triacetyl glycerine is sprayed at this fabric face by the 1-5% of cellulose acetate fibre weight, bounding point after making cellulose acetate fibre surface form point-like dissolving, and the cigarette filter tip composite material of network structure wherein that the acid fiber by polylactic of entanglement is coated and fixed.
Chinese patent application 201010614633.3 (publication number CN102108196A) provides a kind of preparation method of degradation material, and the composition of this degradable material is: PLA 50-80%; Cellulose acetate 10-40%; Biodegradable polyester 1-10%; Plasticizer 1-10%; Nanometer organic modification montmonrillonite 1-5%.Simultaneously; this invention also refer to preparation method: join in high-speed mixer by PLA, cellulose acetate, Biodegradable polyester, plasticizer, nanometer organic modification montmonrillonite; stir; then the above-mentioned raw material mixed is put into comminutor to carry out mixing, melting, extrude, cool rear pelletizing, obtain degradation material.
, there is following two problems in cigarette prepared by the filter stick adopting Chinese patent application 201010151504.5 to relate to: 1) hardness is inadequate, and drop-head is obvious; 2) " smoking " result of cigarette changes, and excitant increases, and pleasant impression and mouthfeel change to some extent, and the degree of change is associated with the addition of PLA.
Occur that the main cause of the problems referred to above is: 1) the adhesive triacetyl glycerine of cellulose acetate does not have adhesive effect to PLA tow, and therefore the interpolation of PLA have lost filter-tip hardness; 2) triacetyl glycerine has certain plasticization to PLA tow, and PLA tow size stability is reduced, volume contraction, drop-head phenomenon appears in whole filter stick; 3) composition of PLA tow to flue gas interception filtration is all different from cellulose acetate tow with amount, and a large amount of interpolations of PLA must cause the change of pleasant impression and mouthfeel.
Summary of the invention
The object of the present invention is to provide a kind of compound filter tip bar.
Compound filter tip bar provided by the invention is made up of the raw material of following weight portion: compound tow 90-98 part, plasticizer triacetyl glycerine 2-10 part.
Wherein:
Compound tow is the mixture of cellulose acetate tow and PLA tow, wherein cellulose acetate tow weight accounting 70-90% (except 70%), PLA tow weight accounting 10-30% (except 30%).
Preferably, composite filament intrafascicular cellulose acetate tow weight accounting 75-90%, PLA tow weight accounting 10-25%.
Further optimization, composite filament intrafascicular cellulose acetate tow weight accounting 80-90%, PLA tow weight accounting 10-20%.
The leading indicator of described cellulose acetate tow is: filament number 1.5-4.0dtex, tow total fiber number 2.0-4.0ktex, crispation number 18-28/25mm, fracture strength >=50N/ktex, content of titanium dioxide 0.2-0.6%.
The leading indicator of described PLA tow is: filament number 1.5-4.0dtex, tow total fiber number 0.2-1.2ktex, crispation number 18-28/25mm, fracture strength >=80N/ktex, content of titanium dioxide 0.2-0.6%.
Present invention also offers a kind of method preparing compound filter tip bar, the method includes the steps of:
1) shredding: PLA tow and cellulose acetate tow carry out shredding respectively, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down;
3) plying: the tow be superimposed together is wound into a silk ribbon;
4) secondary shredding: secondary shredding is carried out to above-mentioned silk ribbon;
5) applying glue: plasticizer triacetyl glycerine is applied on tow equably;
6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
In said method, wherein:
Step 1) width of tow opening is 15-40cm;
Step 2) equipment that uses of folded silk is crawler belt conveying equipment;
Step 3) width of silk ribbon is 20-80mm;
Step 5) applying glue can select whirl coating or spray pattern.
Filter stick tool provided by the invention has the following advantages:
1, in filter stick provided by the invention:
Instead of the cellulose acetate tow of 10-30% with PLA tow, alleviate the weak point of cellulose acetate tow to a certain extent, as:
1) cellulose acetate tow derives from timber (growth cycle is generally greater than 5 years), and PLA tow derives from reproducible starch base crop (growth cycle is generally less than half a year);
2) degradation cycle of cellulose acetate tow is usually more than 4 years, and abandoning of filter stick destroys ecological environment, and PLA tow can degradablely be carbon dioxide and water in composting conditions next year;
3) technology of cellulose acetate tow, equipment and part tow finished product all dependence on import, several domestic vinegar sheets and cellulose acetate tow production unit are all joint venture, technology and equipment mainly relies on overseas enterprise, and PLA tow domesticizes completely;
4) cellulose acetate tow adopts solution spinning spinning, complex manufacturing, and have the environmental issues such as solvent acetone volatilization recovery, and the employing of PLA tow is that melt spinning method is produced, technique is simple.
Fig. 1 is shown in the impact of PLA tow addition on filter stick hardness.
Although PLA tow can mix with cellulose acetate tow, two kinds of tow are mixed certain difficulty, if mix uneven, there will be filter stick hardness heterogeneity and the obvious phenomenon of local contraction, cause filter stick quality to decline.Inventor adopts twice shredding, then carries out compound, and in the middle of twice shredding, add folded silk and plying step, controls suitable shredding width and plying width, thus realizes two kinds of tow Homogeneous phase mixing to enter in filter stick.
Meanwhile, screen the consumption of plasticizer according to the performance of the filter stick made, if to cross hardness number at least inadequate for plasticizer, there will be monofilament damaged phenomenon and filter stick too much with more attachment if added.
2, compared with Chinese patent application 201010151504.5, filter stick drop-head phenomenon provided by the invention is obviously improved, and reaches the requirement of cellulose acetate filter mouth rod drop-head.
3, compared with Chinese patent application 201010151504.5, filter stick hardness provided by the invention is obviously improved, and reaches cellulose acetate filter mouth rod hardness requirement.
4, compared with existing cellulose acetate filter mouth rod, the cigarette of filter stick provided by the invention tipping: pleasant impression does not become, aroma quality does not become substantially, coordinate, mouthfeel is soft, " smoking " result and cellulose acetate filter mouth rod are quite, significantly better than the filter stick that Chinese patent 201010151504.5 is mentioned, the cigarette of existing brand can be directly applied to.
Accompanying drawing explanation
Fig. 1: PLA content is on the impact (plasticizer 5%wt, 100mm filtering rod 2800Pa ± 50Pa) of filter stick hardness.
Detailed description of the invention
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment 1: composite filament beam filter mouth
1, raw material: 94 parts, compound tow, plasticizer triacetyl glycerine 6 parts, wherein composite filament is intrafascicular, PLA tow weight accounting 20%, cellulose acetate tow weight accounting 80%.
2, preparation method:
1) shredding: PLA tow and cellulose acetate tow shredding respectively, width is 20cm, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down by track conveyor;
3) plying: the silk ribbon tow be superimposed together being wound into wide 50mm;
4) secondary shredding: above-mentioned silk ribbon carries out secondary shredding on filter-stick forming device, shredding width 30cm;
5) applying glue: triacetyl glycerine is sprayed to tow on the surface equably; 6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 86%, 30min pyrocondensation 0.6% under 50 DEG C of conditions.
2) smoking effect
Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, coordinate, mouthfeel is soft, without assorted gas.
Embodiment 2: composite filament beam filter mouth
1, raw material: 94 parts, compound tow, plasticizer triacetyl glycerine 6 parts, wherein composite filament is intrafascicular, PLA tow weight accounting 15%, cellulose acetate tow weight accounting 85%.
2, preparation method:
1) shredding: PLA tow and cellulose acetate tow shredding respectively, width is 25cm, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down by track conveyor;
3) plying: the silk ribbon tow be superimposed together being wound into wide 60mm;
4) secondary shredding: above-mentioned silk ribbon carries out secondary shredding on filter-stick forming device, shredding width 30cm;
5) applying glue: triacetyl glycerine is sprayed to tow on the surface equably;
6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 88%, 30min pyrocondensation 0.5% under 50 DEG C of conditions.
2) smoking effect
Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, comparatively coordinate, mouthfeel is soft, without assorted gas.
Embodiment 3: composite filament beam filter mouth
1, raw material: 94 parts, compound tow, plasticizer triacetyl glycerine 6 parts, wherein composite filament is intrafascicular, PLA tow weight accounting 10%, cellulose acetate tow weight accounting 90%.
2, preparation method:
1) shredding: PLA tow and cellulose acetate tow shredding respectively, width is 15cm, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down by track conveyor;
3) plying: the silk ribbon tow be superimposed together being wound into wide 30mm;
4) secondary shredding: above-mentioned silk ribbon carries out secondary shredding on filter-stick forming device, shredding width 30cm;
5) applying glue: triacetyl glycerine is sprayed to tow on the surface equably;
6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 90%, 30min pyrocondensation 0.3% under 50 DEG C of conditions.
2) smoking effect
Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, comparatively coordinate, mouthfeel is soft, without assorted gas.
Embodiment 4: composite filament beam filter mouth
1, raw material: 95 parts, compound tow, plasticizer triacetyl glycerine 5 parts, wherein composite filament is intrafascicular, PLA tow weight accounting 25%, cellulose acetate tow weight accounting 75%.
2, preparation method:
1) shredding: PLA tow and cellulose acetate tow shredding respectively, shredding width is 30cm, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down by track conveyor;
3) plying: the silk ribbon tow be superimposed together being wound into wide 40mm;
4) secondary shredding: above-mentioned silk ribbon carries out secondary shredding on filter-stick forming device, shredding width 30cm;
5) applying glue: triacetyl glycerine is sprayed to tow on the surface equably;
6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 82%, 30min pyrocondensation 0.8% under 50 DEG C of conditions.
2) smoking effect
Pleasant impression still can, aroma quality does not become substantially, amount is sufficient, mouthfeel is lighter, without assorted gas.
Comparative example 1:201010151504.5 embodiment 1
1, raw material: 95 parts, compound tow, plasticizer triacetyl glycerine 5 parts, wherein composite filament is intrafascicular, PLA tow weight accounting 90%, cellulose acetate tow weight accounting 10%.
2, preparation method:
First by after polyactide fiber filament and cellulose acetate fibre long filament difference fibrillation, be 90% by the mass fraction of acid fiber by polylactic, the mass fraction of cellulose acetate fibre be 10% proportioning be paved into two-layer, then air-spray is adopted vertically to spray or needle point method, two-layer fiber is made mutually to carry out physical entanglement, thereafter triacetyl glycerine is sprayed at this fabric face by 5% of cellulose acetate fibre weight, bounding point after making cellulose acetate fibre surface form point-like dissolving, and the cigarette filter tip composite material of network structure wherein that the acid fiber by polylactic of entanglement is coated and fixed.Subsequently composite is prepared filter stick on existing filter-stick forming device.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 68%, 30min pyrocondensation 10.5% under 50 DEG C of conditions.
2) smoking effect
Compared with cellulose acetate filter mouth rod, pleasant impression and aroma change are comparatively large, and excitant strengthens, coarse mouthfeel, have a small amount of assorted gas.
Comparative example 2:201010151504.5 embodiment 3
1, raw material: 99 parts, compound tow, plasticizer triacetyl glycerine 1 part, wherein composite filament is intrafascicular, PLA tow weight accounting 30%, cellulose acetate tow weight accounting 70%.
2, preparation method:
First by after polyactide fiber filament and cellulose acetate fibre long filament difference fibrillation, be 30% by the mass fraction of acid fiber by polylactic, the mass fraction of cellulose acetate fibre be 70% proportioning be paved into two-layer, then air-spray is adopted vertically to spray or needle point method, two-layer fiber is made mutually to carry out physical entanglement, thereafter triacetyl glycerine is sprayed at this fabric face by 1% of cellulose acetate fibre weight, bounding point after making cellulose acetate fibre surface form point-like dissolving, and the cigarette filter tip composite material of network structure wherein that the acid fiber by polylactic of entanglement is coated and fixed.Subsequently composite is prepared filter stick on existing filter-stick forming device.
3, filter stick evaluation:
Filter stick tipping at home certain brand cigarette is tested:
1) physical index
Filter stick long 100 ± 0.5mm, circumference 24.5 ± 0.2mm, resistance to suction 2800 ± 50Pa, hardness 72%, 30min pyrocondensation 1.5% under 50 DEG C of conditions.
2) smoking effect
Pleasant impression still can, aroma quality does not become substantially, and mouthfeel shows slightly coarse, seemingly has assorted gas.
Experimental example 1: index is investigated
At home certain brand cigarette is tested, control the basic physics conventional index identical (open type resistance to suction 1100 ± 20Pa, circumference 24.50 ± 0.2mm) of comparative sample, embodiment 1-4, comparative example 1-2 and the fine filter stick of existing vinegar are compared.
1, index and method of testing:
1) method of testing of filter stick hardness:
The radial direction that filter stick hardness refers to sample is within a certain period of time subject to certain pressure, and after sample pressurized, before diameter and pressurized, the percentage of diameter is hardness.
Select Fei Er wound to receive (FILTRON A) hardness tester and carry out the test of hardness, test environment temperature controls at 22 ± 1 DEG C, ambient humidity 55 ± 2%, sample number 50, load 10+290g, sample diameter 7.798 ± 0.1mm, compression time 10S, hardness calculation formula:
%H hardness=(sample diameter-decrement)/sample diameter × 100%
2) method of testing of filter stick pyrocondensation head:
Select convection oven to carry out the test of pyrocondensation head, test environment temperature controls at 50 ± 1 DEG C, ambient humidity 30 ± 2%, sample number 50, heated time 30min, sample length 100 ± 0.5mm, the computing formula of pyrocondensation head:
% pyrocondensation head=amount of contraction/sample length × 100%
3) " smoking " is evaluated:
The filter stick of embodiment 1-4 and comparative example 1-2 is respectively hinged with 10 certain brand cigarettes in cigarette factory, places the qualification of 15 Tian Housong cigarette factory expert " smoking " groups, and contrast with blank cellulose acetate filter mouth rod.
2, testing result:
1) physical index (pyrocondensation head, hardness, stiffness SD etc.), in table 1:
Table 1: physical index contrasts
As shown in Table 1, hardness and the pyrocondensation head of embodiment and comparative example are all associated with the addition of PLA tow, and along with the increase of the intrafascicular PLA tow proportion of composite filament, hardness declines gradually, and pyrocondensation head numerical value becomes large.Compared with blank cellulose acetate filter stick, hardness and the pyrocondensation head of embodiment 1-4 sample all reach requirement, and the effect of comparative example 1 is poor, and pyrocondensation head reaches 10.5%, and hardness only has 68%, and the index of comparative example 2 does not reach requirement yet.
2) " smoking " results contrast, the smoking result of embodiment and comparative example based on blank sample cellulose acetate filter stick, in table 2:
Table 2: " smoking " Comparative result
Filter stick " smoking " result
Cellulose acetate filter stick Pleasant impression is clean, and fragrance is sufficient, comparatively coordinate, mouthfeel is soft, without assorted gas
Embodiment 1 filter stick Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, coordinate, mouthfeel is soft, without assorted gas
Embodiment 2 filter stick Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, comparatively coordinate, mouthfeel is soft, without assorted gas
Embodiment 3 filter stick Pleasant impression does not become, and aroma quality does not become substantially, amount is sufficient, comparatively coordinate, mouthfeel is soft, without assorted gas
Embodiment 4 filter stick Pleasant impression still can, aroma quality does not become substantially, amount is sufficient, mouthfeel is lighter, without assorted gas
Comparative example 1 filter stick Pleasant impression and aroma change are comparatively large, and excitant strengthens, and coarse mouthfeel, has assorted gas
Comparative example 2 filter stick Pleasant impression still can, aroma quality does not become substantially, and mouthfeel shows slightly coarse, seemingly has assorted gas
As shown in Table 2: when PLA tow proportion is within 30% (embodiment sample), pleasant impression does not almost become, aroma quality does not become substantially, amount is sufficient, comparatively coordinate, mouthfeel still can, without assorted gas, substantially suitable with cellulose acetate filter stick " smoking " result; And the changing greatly of comparative example 1, pleasant impression and aroma change are comparatively large, and excitant strengthens, coarse mouthfeel, have assorted gas, " smoking " is not passed through, the sample pleasant impression of comparative example 2 still can, aroma quality does not become substantially, mouthfeel shows slightly coarse, seemingly has assorted gas, and expert advice formula need adjust.
Although above with general explanation, detailed description of the invention and test, the present invention is described in detail, on basis of the present invention, can make some amendments to it or improve, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.

Claims (6)

1. a compound filter tip bar, is characterized in that, this composite filter-tip is made up of the raw material of following weight portion: compound tow 90-98 part, plasticizer triacetyl glycerine 2-10 part;
Described compound tow is the mixture of cellulose acetate tow and PLA tow, cellulose acetate tow weight accounting 75-90%, PLA tow weight accounting 10-25%;
Described cellulose acetate tow: filament number 1.5-4.0dtex, tow total fiber number 2.0-4.0ktex, crispation number 18-28/25mm, fracture strength >=50N/ktex, content of titanium dioxide 0.2-0.6%;
Described PLA tow: filament number 1.5-4.0dtex, tow total fiber number 0.2-1.2ktex, crispation number 18-28/25mm, fracture strength >=80N/ktex, content of titanium dioxide 0.2-0.6%, its forming step comprises following methods:
1) shredding: PLA tow and cellulose acetate tow carry out shredding respectively, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down;
3) plying: the tow be superimposed together is wound into a silk ribbon;
4) secondary shredding: above-mentioned silk ribbon is carried out secondary shredding.
2. composite filter-tip according to claim 1, is characterized in that, described composite filament intrafascicular cellulose acetate tow weight accounting 80-90%, PLA tow weight accounting 10-20%.
3. prepare a method for the compound filter tip bar described in claim 1 or 2, it is characterized in that, the method includes the steps of:
1) shredding: PLA tow and cellulose acetate tow carry out shredding respectively, for subsequent use;
2) folded silk: the PLA tow of shredding and cellulose acetate tow are superimposed together up and down;
3) plying: the tow be superimposed together is wound into a silk ribbon;
4) secondary shredding: above-mentioned silk ribbon is carried out secondary shredding;
5) applying glue: triacetyl glycerine is applied on tow equably;
6) wrap up in paper cutting: paper is wrapped up in the tow after applying glue, and sealing cuts into rod.
4. method according to claim 3, is characterized in that, the width of described step 1) and step 4) tow opening is 15-40cm; Described step 2) equipment that uses of folded silk is crawler belt conveying equipment.
5. method according to claim 3, is characterized in that, the width of described step 3) silk ribbon is 20-80mm.
6. method according to claim 3, is characterized in that, described step 5) applying glue is whirl coating or spray pattern.
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CN108685192A (en) * 2018-06-27 2018-10-23 常州龙途新材料科技有限公司 A kind of degradable smell generating element and smoking article for non-combustion-cigarette
CN109846084A (en) * 2018-12-26 2019-06-07 杨成云 A kind of polylactic acid silk material composite molding filter rod
CN115211611A (en) * 2021-04-21 2022-10-21 湖南吉首市民族烟材有限公司 Cooling element processing device, preparation method and cigarette processing system

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CN201274763Y (en) * 2008-10-24 2009-07-22 常德烟草机械有限责任公司 Opening device of filter stick moulding machine unit
CN101805937A (en) * 2010-03-18 2010-08-18 上海同杰良生物材料有限公司 Filament bundle for degrading cigarette, preparation method thereof, and preparation method of filter stick
CN101816456A (en) * 2010-04-20 2010-09-01 云南富集生物材料科技有限公司 Cigarette filter tip composite material and preparation method thereof

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