CN116905123B - Sheath-core type cigarette tow and preparation method thereof - Google Patents
Sheath-core type cigarette tow and preparation method thereof Download PDFInfo
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- CN116905123B CN116905123B CN202310909871.4A CN202310909871A CN116905123B CN 116905123 B CN116905123 B CN 116905123B CN 202310909871 A CN202310909871 A CN 202310909871A CN 116905123 B CN116905123 B CN 116905123B
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000012792 core layer Substances 0.000 claims abstract description 46
- 239000002994 raw material Substances 0.000 claims abstract description 39
- 229920005610 lignin Polymers 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 32
- 238000009987 spinning Methods 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000006229 carbon black Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000011162 core material Substances 0.000 claims description 35
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 13
- 239000004626 polylactic acid Substances 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims description 10
- 241000208125 Nicotiana Species 0.000 claims description 9
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 claims description 4
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 7
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 11
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 229920006221 acetate fiber Polymers 0.000 description 4
- 229920002301 cellulose acetate Polymers 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
- A24D3/065—Use of materials for tobacco smoke filters characterised by structural features of the fibers with sheath/core of bi-component type 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
- A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
-
- 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
-
- 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
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention discloses a sheath-core type cigarette tow and a preparation method thereof, wherein the sheath comprises a sheath layer and a core layer, and the sheath layer is prepared from the following raw materials in parts by weight: 80-92 parts of polylactic resin, 0.1-0.3 part of white carbon black and 1-2 parts of poly-p-phenylene terephthalamide; the core layer is prepared from the following raw materials in parts by weight: 80-85 parts of polylactic resin, 2-3 parts of lignin, 1-2 parts of poly-p-phenylene terephthalamide and 0.1-0.3 part of white carbon black; the mass ratio of the skin layer to the core layer is 1:1-15. The preparation method comprises the following steps: (1) drying the skin layer raw material and the core layer raw material; (2) spinning of sheath-core type composite fibers; (3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow. The cigarette tow prepared by the invention has good adsorption performance on harmful substances, good high temperature resistance, heat resistance and flame retardance, and is degradable.
Description
Technical Field
The invention relates to the field of preparation of cigarette filter tip materials, in particular to a sheath-core type cigarette tow and a preparation method thereof.
Background
In the prior art, the cigarette smoke is filtered by a filter tip, so that harmful components inhaled by a human body are reduced. The cigarette tow is an important material for producing cigarette filter tip sticks, and has the advantages of good elasticity, no toxicity, no smell, high thermal stability, small suction resistance, good filtration effect, good selectivity and the like. The current adopted tow materials for cigarettes comprise acetate fiber, polypropylene and polylactic acid. The acetate fiber has stable performance and good taste, is the main force on the market, but the tar reducing capability is inferior to that of a paper filter tip rod, but the acetate fiber is a material which can be decomposed for many years, the performance of polypropylene is inferior to that of the acetate fiber, and the polylactic acid is a novel environment-friendly product, has the advantages of reproducibility and biodegradability, and has a certain development prospect. It is therefore an important development to find a tobacco tow material which retains the tobacco flavor, improves the smoking quality, and is excellent in performance.
CN 113584629B discloses a sheath-core type cigarette tow comprising a sheath layer and a core layer; the skin layer comprises cellulose acetate; the core layer is prepared from the following raw materials in percentage by mass: 98.5 to 99.98 percent of polylactic resin, 0.01 to 1 percent of sodium benzoate and 0.01 to 0.5 percent of hydrous magnesium silicate ultrafine powder. The skin layer of the sheath-core type cigarette tow provided by the invention adopts cellulose acetate, and the excellent temperature resistance of the cellulose acetate is utilized, so that the phenomena of roller sticking and cutter sticking of the polylactic acid cigarette tow under the shearing actions of pressure, friction and the like of filter stick forming equipment can be avoided; sodium benzoate and hydrous magnesium silicate ultrafine powder are added into the core layer to serve as nucleating agents, and the crystallinity of polylactic acid is synergistically improved by adjusting and controlling the dosage, so that the thermal stability of the sheath-core type cigarette tows is further improved, and the filtering performance of the cigarette tows is further improved. However, the degradation performance of the cellulose acetate is poor and is not consistent with the future development trend.
Disclosure of Invention
The invention aims to provide a sheath-core type cigarette tow with good filtration effect and excellent performance and a preparation method thereof.
The invention adopts the following technical scheme:
a sheath-core type cigarette tow comprises a sheath layer and a core layer,
the cortex is prepared from the following raw materials in parts by weight:
80-92 parts of polylactic resin
0.1 to 0.3 part of white carbon black
1-2 parts of poly (p-phenylene terephthalamide);
the core layer is prepared from the following raw materials in parts by weight:
80-85 parts of polylactic resin
2-3 parts of lignin
1 to 2 parts of poly (p-phenylene terephthalamide)
0.1 to 0.3 part of white carbon black;
the mass ratio of the skin layer to the core layer is 1:1-15.
Lignin is added into the core layer, and the adsorption of polar substances in cigarettes, particularly phenol substances, can be enhanced by utilizing polar groups such as polyhydroxy in the lignin.
The poly-p-phenylene terephthalamide is added into the skin layer and the core layer, and the excellent performance of the poly-p-phenylene terephthalamide is utilized, so that the flame retardant property and the heat resistance of the sheath-core type cigarette tows can be improved, and the melting points of the skin layer and the core layer are increased.
Further, the lignin in the core layer needs to be pretreated, the pretreatment process is to wash, wash and dry the industrial lignin by acetone to obtain pretreated lignin, the pretreatment can further purify the industrial lignin to remove micromolecular organic matters contained in the lignin, and the performance is enhanced; preferably, the pretreated lignin is crushed and sieved to obtain powder with 500-1200 meshes.
Further, paraphenylene terephthalamide in the core layer or the skin layer is powdery, and the mesh number is 500-1200.
Further, the white carbon black in the core layer or the skin layer is gas-phase hydrophobic white carbon black, and the gas-phase hydrophobic white carbon black is added, so that the uniformity of the core layer or the skin layer is improved, the crystallinity of the polylactic acid is improved, meanwhile, the adsorption performance of harmful substances is enhanced due to the fact that the surface activity is more and the contact area is large, and the water absorption of the core layer is reduced due to the hydrophobic performance.
Further, the lignin drying method is solar irradiation and air drying, so that polar groups in the lignin can be reserved to the greatest extent.
The invention also provides a preparation method of the sheath-core type cigarette tow, which comprises the following steps:
(1) Respectively drying the skin layer raw material and the core layer raw material to make the moisture content lower than 150mg/kg;
(2) Sending the skin raw materials into a first set of spinning system according to the mass ratio, melting at 200-300 ℃, and quantitatively inputting into a composite spinning component; sending the skin raw materials into a second set of spinning system according to the mass ratio, melting at the temperature of 150-300 ℃, and quantitatively inputting into a composite spinning component; the two molten fluids respectively flow in independent pipelines and are mixed to form sheath-core type composite fibers when exiting the spinneret plate;
(3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow.
Further, the sheath and core materials need to be thoroughly mixed before being fed into the spinning system.
Further, the traction temperature in the step (3) is between 60 and 95 ℃.
Further, the crimping temperature in the step (3) is between 70 and 100 ℃.
Compared with the prior art, the invention has the following advantages:
1. the prepared cigarette tow has good adsorption performance on harmful substances.
2. High temperature resistance, heat resistance and good flame retardance.
3. Can be degraded.
Detailed Description
The present invention is further described below with reference to examples, but the present invention is not limited to the examples, and it should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., fall within the scope of the present invention and the scope of disclosure.
Example 1
A sheath-core type cigarette tow comprises a sheath layer and a core layer,
the cortex is prepared from the following raw materials in parts by weight:
80 parts of polylactic acid resin
0.1 part of gas phase hydrophobic white carbon black
1 part of powdery poly (p-phenylene terephthamide), 500-600 meshes;
the core layer is prepared from the following raw materials in parts by weight:
80 parts of polylactic acid resin
2 parts of lignin
1 part of powdery poly (p-phenylene terephthamide) with 500-600 meshes
0.1 part of gas phase hydrophobic white carbon black;
the mass ratio of the skin layer to the core layer is 1:3.
The lignin in the core layer needs to be pretreated, and the pretreatment process is to wash, wash and dry industrial lignin by acetone to obtain pretreated lignin.
The preparation method of the sheath-core type cigarette tow comprises the following steps:
(1) Respectively drying the skin layer raw material and the core layer raw material to make the moisture content lower than 150mg/kg;
(2) Sending the skin raw materials into a first set of spinning system according to the mass ratio, melting at 200-250 ℃, and quantitatively inputting into a composite spinning component; sending the skin raw materials into a second set of spinning system according to the mass ratio, melting at the temperature of 150-200 ℃, and quantitatively inputting into a composite spinning component; the two molten fluids respectively flow in independent pipelines and are mixed to form sheath-core type composite fibers when exiting the spinneret plate;
(3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow.
The raw materials of the skin layer and the core layer are required to be completely mixed and then fed into a spinning system, wherein the traction temperature in the step (3) is between 60 and 85 ℃, and the curling temperature is between 70 and 90 ℃.
Example 2
A sheath-core type cigarette tow comprises a sheath layer and a core layer,
the cortex is prepared from the following raw materials in parts by weight:
92 parts of polylactic acid resin
0.3 part of gas phase hydrophobic white carbon black
2 parts of powdery poly (p-phenylene terephthamide), 1000-1200 meshes;
the core layer is prepared from the following raw materials in parts by weight:
85 parts of polylactic acid resin
3 parts of lignin, 500-800 meshes
2 parts of powdery poly (p-phenylene terephthamide) with 100-1200 meshes
0.3 part of gas phase hydrophobic white carbon black;
the mass ratio of the skin layer to the core layer is 1:10.
The lignin in the core layer needs to be pretreated, and the pretreatment process is to wash, wash and dry industrial lignin by acetone to obtain pretreated lignin, wherein the lignin drying method is solar irradiation and air drying.
The preparation method of the sheath-core type cigarette tow comprises the following steps:
(1) Respectively drying the skin layer raw material and the core layer raw material to make the moisture content lower than 100mg/kg;
(2) Feeding the skin raw materials into a first set of spinning system according to the mass ratio, melting at 255-300 ℃, and quantitatively inputting into a composite spinning component; sending the skin raw materials into a second set of spinning system according to the mass ratio, melting at the temperature of 250-300 ℃, and quantitatively inputting into a composite spinning component; the two molten fluids respectively flow in independent pipelines and are mixed to form sheath-core type composite fibers when exiting the spinneret plate;
(3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow.
The raw materials of the skin layer and the core layer are required to be completely mixed and then fed into a spinning system, wherein the traction temperature in the step (3) is 86-95 ℃, and the curling temperature is 91-100 ℃.
Example 3
A sheath-core type cigarette tow comprises a sheath layer and a core layer,
the cortex is prepared from the following raw materials in parts by weight:
90 parts of polylactic acid resin
0.2 part of gas phase hydrophobic white carbon black
1.5 parts of powdery poly (p-phenylene terephthamide), 800-1000 meshes;
the core layer is prepared from the following raw materials in parts by weight:
83 parts of polylactic acid resin
3 parts of lignin
1 part of powdery poly (p-phenylene terephthamide) with 800-1000 meshes
0.26 part of gas phase hydrophobic white carbon black;
the mass ratio of the skin layer to the core layer is 1:15.
The lignin in the core layer needs to be pretreated, and the pretreatment process is to wash, wash and dry industrial lignin by acetone to obtain pretreated lignin, wherein the lignin drying method is solar irradiation and air drying.
The preparation method of the sheath-core type cigarette tow comprises the following steps:
(1) Respectively drying the skin layer raw material and the core layer raw material to make the moisture content lower than 150mg/kg;
(2) Sending the skin raw materials into a first set of spinning system according to the mass ratio, melting at 240-270 ℃, and quantitatively inputting into a composite spinning component; sending the cortex raw materials into a second set of spinning system according to the mass ratio, melting at 200-240 ℃, and quantitatively inputting into a composite spinning component; the two molten fluids respectively flow in independent pipelines and are mixed to form sheath-core type composite fibers when exiting the spinneret plate;
(3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow.
The raw materials of the skin layer and the core layer are required to be completely mixed and then fed into a spinning system, wherein the traction temperature in the step (3) is 75-85 ℃, and the curling temperature is 81-90 ℃.
Comparative example 1
The difference between comparative example 1 and example 2 is: the poly (paraphenylene terephthalamide) component in the skin layer and the core layer was removed, and the other components are the same as in example 2, and will not be described again.
Comparative example 2
The difference between comparative example 1 and example 2 is: the white carbon black components in the skin layer and the core layer are removed, and the other components are the same as in example 2, and are not repeated.
Comparative example 3
The difference between comparative example 1 and example 2 is: the lignin component in the core layer was removed, and the other components are the same as in example 2, and will not be described again.
The tobacco tows prepared in the examples and the comparative examples are prepared into tobacco filter rods for performance test, and the results are shown in table 1.
TABLE 1 Performance data for cigarette filter rod tests made from the bundles of cigarettes prepared in the above examples and comparative examples
From the data in the table, the dry heat shrinkage of comparative example 1 is obviously increased, and the other values are reduced to a certain extent, which shows that the addition of the poly (p-phenylene terephthamide) can enhance the heat resistance of the filter rod for cigarettes; the values of the comparative example 2 are reduced to a certain extent, which indicates that the addition of the white carbon black can enhance the adsorption of most substances in the cigarettes; the tar content of comparative example 3 is obviously reduced, and the other values are reduced to a certain extent, which shows that the addition of lignin can enhance the adsorption of polar substances in cigarettes, in particular the adsorption of tar such as phenols.
Claims (9)
1. A sheath-core type cigarette tow comprises a sheath layer and a core layer,
the cortex is prepared from the following raw materials in parts by weight:
80-92 parts of polylactic acid resin
0.1 to 0.3 part of white carbon black
1-2 parts of poly (p-phenylene terephthalamide);
the core layer is prepared from the following raw materials in parts by weight:
80-85 parts of polylactic acid resin
2-3 parts of lignin
1-2 parts of poly (p-phenylene terephthalamide)
0.1-0.3 part of white carbon black;
the mass ratio of the skin layer to the core layer is 1:1-15.
2. The sheath-core tobacco tow according to claim 1, wherein lignin in the core layer is subjected to pretreatment, wherein the pretreatment process is to wash, wash and dry industrial lignin with acetone, so as to obtain pretreated lignin.
3. The sheath-core tobacco tow of claim 1, wherein the poly-paraphenylene terephthalamide in the core or sheath is powdery and has a mesh size of 500-1200 mesh.
4. The sheath-core tobacco tow of claim 1, wherein the white carbon black in the core or sheath is a fumed hydrophobic white carbon black.
5. The sheath-core tobacco tow of claim 2, wherein the lignin is dried by sun irradiation and air drying.
6. A method of making the sheath-core tobacco tow of any one of claims 1 to 5, comprising the steps of:
(1) Respectively drying the skin layer raw material and the core layer raw material to make the moisture content lower than 150mg/kg;
(2) Sending the skin raw materials into a first set of spinning system according to the mass ratio, melting at 200-300 ℃, and quantitatively inputting into a composite spinning component; feeding the core layer raw materials into a second set of spinning system according to the mass ratio, melting at 150-300 ℃, and quantitatively inputting into a composite spinning component; the two molten fluids respectively flow in independent pipelines and are mixed to form sheath-core type composite fibers when exiting the spinneret plate;
(3) And (3) cooling, drawing, curling and drying the composite fiber in the step (2) to obtain the sheath-core type cigarette tow.
7. The method of claim 6, wherein the sheath and core materials are fed to the spinning system after being thoroughly mixed.
8. The method according to claim 6, wherein the traction temperature in the step (3) is 60-95 ℃.
9. The method according to claim 6, wherein the curling temperature in the step (3) is 70-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310909871.4A CN116905123B (en) | 2023-07-24 | 2023-07-24 | Sheath-core type cigarette tow and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310909871.4A CN116905123B (en) | 2023-07-24 | 2023-07-24 | Sheath-core type cigarette tow and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116905123A CN116905123A (en) | 2023-10-20 |
| CN116905123B true CN116905123B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310909871.4A Active CN116905123B (en) | 2023-07-24 | 2023-07-24 | Sheath-core type cigarette tow and preparation method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153621A (en) * | 1996-11-12 | 1997-07-09 | 李贵生 | Tar-reducing filter tip for cigarette and its prodn |
| CN103074716A (en) * | 2013-02-07 | 2013-05-01 | 中国烟草总公司郑州烟草研究院 | Sheath-core polylactic acid tobacco tow and filter stick and preparation method thereof |
| KR101783247B1 (en) * | 2016-04-28 | 2017-10-10 | 주식회사 삼흥 | Process Of Producing Cigarette Filter Using Biodegradable Poly-Lactic-Acid Fiber Tow |
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| CN111184255A (en) * | 2020-01-23 | 2020-05-22 | 盐城工业职业技术学院 | Composite filter tip material |
| CN113481629A (en) * | 2021-08-02 | 2021-10-08 | 苏州金泉新材料股份有限公司 | Sheath-core polylactic acid cigarette tow and preparation method thereof |
| CN113584629A (en) * | 2021-08-02 | 2021-11-02 | 苏州金泉新材料股份有限公司 | Core-sheath type cigarette tow and preparation method thereof |
| CN113981564A (en) * | 2021-11-15 | 2022-01-28 | 中国石油大学(北京) | Sand-carrying fiber and preparation and application thereof |
| CN115748007A (en) * | 2022-12-29 | 2023-03-07 | 安徽英特力工业工程技术有限公司 | Modified polylactic acid tow |
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2023
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|---|---|---|---|---|
| CN1153621A (en) * | 1996-11-12 | 1997-07-09 | 李贵生 | Tar-reducing filter tip for cigarette and its prodn |
| CN103074716A (en) * | 2013-02-07 | 2013-05-01 | 中国烟草总公司郑州烟草研究院 | Sheath-core polylactic acid tobacco tow and filter stick and preparation method thereof |
| KR101783247B1 (en) * | 2016-04-28 | 2017-10-10 | 주식회사 삼흥 | Process Of Producing Cigarette Filter Using Biodegradable Poly-Lactic-Acid Fiber Tow |
| CN108588898A (en) * | 2018-04-28 | 2018-09-28 | 苏州金泉新材料股份有限公司 | A kind of cellulose acetate/polylactic acid core-skin composite fiber pipe tobacco and preparation method thereof |
| CN111184255A (en) * | 2020-01-23 | 2020-05-22 | 盐城工业职业技术学院 | Composite filter tip material |
| CN113481629A (en) * | 2021-08-02 | 2021-10-08 | 苏州金泉新材料股份有限公司 | Sheath-core polylactic acid cigarette tow and preparation method thereof |
| CN113584629A (en) * | 2021-08-02 | 2021-11-02 | 苏州金泉新材料股份有限公司 | Core-sheath type cigarette tow and preparation method thereof |
| CN113981564A (en) * | 2021-11-15 | 2022-01-28 | 中国石油大学(北京) | Sand-carrying fiber and preparation and application thereof |
| CN115748007A (en) * | 2022-12-29 | 2023-03-07 | 安徽英特力工业工程技术有限公司 | Modified polylactic acid tow |
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| CN116905123A (en) | 2023-10-20 |
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