CN109619674B - Preparation method of lotus fiber for cigarettes and moisturizing filter tip containing lotus fiber - Google Patents
Preparation method of lotus fiber for cigarettes and moisturizing filter tip containing lotus fiber Download PDFInfo
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- CN109619674B CN109619674B CN201811396653.0A CN201811396653A CN109619674B CN 109619674 B CN109619674 B CN 109619674B CN 201811396653 A CN201811396653 A CN 201811396653A CN 109619674 B CN109619674 B CN 109619674B
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- 239000000835 fiber Substances 0.000 title claims abstract description 145
- 240000002853 Nelumbo nucifera Species 0.000 title claims abstract description 143
- 235000006508 Nelumbo nucifera Nutrition 0.000 title claims abstract description 141
- 235000006510 Nelumbo pentapetala Nutrition 0.000 title claims abstract description 128
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 230000003020 moisturizing effect Effects 0.000 title claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 23
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 238000010411 cooking Methods 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 14
- 239000007864 aqueous solution Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000012046 mixed solvent Substances 0.000 claims abstract description 11
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000004061 bleaching Methods 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 238000005886 esterification reaction Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 239000007790 solid phase Substances 0.000 claims abstract description 6
- 229920006221 acetate fiber Polymers 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 16
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 11
- 108010059892 Cellulase Proteins 0.000 claims description 10
- 229940106157 cellulase Drugs 0.000 claims description 10
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 229920002678 cellulose Polymers 0.000 abstract description 2
- 239000001913 cellulose Substances 0.000 abstract description 2
- 241000208125 Nicotiana Species 0.000 description 16
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 16
- 238000002156 mixing Methods 0.000 description 9
- 230000000391 smoking effect Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000007794 irritation Effects 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 230000001953 sensory effect Effects 0.000 description 5
- 239000003205 fragrance Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 210000000214 mouth Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 206010013911 Dysgeusia Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003906 humectant Substances 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 241000218922 Magnoliophyta Species 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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- 235000019505 tobacco product Nutrition 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Paper (AREA)
Abstract
The invention provides a preparation method of lotus fiber for cigarettes and a moisturizing filter tip containing the lotus fiber. The cigarette isSelecting fresh lotus leaf stalks or lotus roots, removing dirt, crushing, extruding and grinding to form a pulpy raw material, adding a cellulose solution, heating, stirring and reacting to obtain lotus fiber pulp, adding a NaOH aqueous solution, uniformly filling the lotus fiber pulp into a cooking tank, heating, cooking and separating by using steam to obtain a solid phase to obtain crude fiber, immersing the crude fiber in a mixed solvent prepared from an NMMO solvent and acetic anhydride for an esterification reaction to obtain esterified lotus fibers, and finally adopting CO for the esterified lotus fibers2And (5) boiling, bleaching and softening the supercritical fluid to obtain the lotus fiber for the cigarettes. The lotus fiber for cigarettes prepared by the invention has good softness and specific hygroscopicity, can be applied to cigarette filter rods, has the addition amount of 5-35% of the mass of the filter element, plays a role in relatively keeping moisture and moistening, softens smoke, and increases the comfort and the moistening of cigarettes; the smoke interception effect is better, and the harmful substances and the tar of the cigarettes are reduced more favorably.
Description
Technical Field
The invention relates to the technical field of cigarettes, in particular to a preparation method of a cigarette filter stick with a moisturizing function.
Background
The moisture content of the cut tobacco of the cigarette not only influences the physical properties of the tobacco leaves of the cigarette and the safety of the cigarette, but also influences the sensory quality of the cigarette: under the dry climate condition, the moisture of the tobacco shreds is quickly lost, the moisture of the mainstream smoke is low, the irritation is large during smoking, the dry feeling is obvious, and the oral cavity sputum production of smokers is easily caused, so that the smoking comfort of cigarettes is reduced; under humid conditions, tobacco shreds absorb moisture from the surrounding air, causing smoke to be stuffy and the tobacco shreds are prone to mildew. Therefore, the moisture content control of tobacco products becomes an important technical link in the tobacco industry.
Cigarette industry enterprises make a great deal of research on the moisture retention technology of cigarettes and mainly adopt three ways to realize the moisture retention, namely, in the cigarette processing process, a humectant (such as a cigarette moisture retention and flavor enhancement agent in patent 201711438744.1, a cigarette tobacco shred sweetening and moisture retention additive in patent 201610915435.8 and a preparation method thereof, a cigarette moisture retention agent in patent 201710545074.7 citric acid type natural eutectic solvent and application thereof in cigarettes, and the like) is added into tobacco shreds, and the cost of the humectant contains natural and synthetic chemical components. Secondly, the moisture is preserved by means of special packaging, lining paper, even cigarette paper, or independent packaging of cigarettes and the like to relatively isolate the external environment (for example, patent 201810336574.4 discloses a moisture-preserving and moisture-preserving cigarette packaging box and a manufacturing method thereof, 201810033393.4 a preparation method of pottery clay packaging paper for preserving fragrance and moisture of cigarettes, packaging paper and a packaging box, 201710627662.5 a preparation method of moisture-preserving ash-wrapped cigarette paper and the like), and thirdly, the mode has a common effect by adding spice or essence with a moisture-preserving function into the cut tobacco.
The lotus plant is one of the earliest species in the angiosperm plant, a plurality of yellow-white filaments can be pulled out after the lotus plant is broken, namely lotus fiber, and the lotus fiber not only has good functions of moisture absorption, perspiration, deodorization, ventilation and mildew resistance and sterilization, but also contains a plurality of benefits for human health, so that part of garment processing enterprises blend the lotus fiber with cotton fiber to meet the individual requirements of consumers on health, environmental protection, comfort, health care and the like; at present, no relevant documents mention that the lotus fiber is applied to cigarettes.
Researches show that the lotus fiber can not be applied to cigarettes mainly because of high single denier, thick fiber and insufficient softness, and can be used only after being subjected to soft modification before use. Although the lotus fiber is used in industry to improve the problems of hard hand, thicker fiber and poorer spinnability, which lead to lower addition ratio, the method of pre-treating and softening the lotus fiber to improve the spinnability is mentioned, and a cotton bale mixing method is used in the mixing process. However, the existing lotus fiber used in textile industry mainly adopts chemical treatment modes such as alkaline pretreatment, liquid ammonia pretreatment, pretreatment of mixed liquid of ethylenediamine, urea and water and the like, and in the treatment process, because of participation of strong-odor chemical substances, less than chemical odor remains, and a little chemical odor remains to seriously affect the smoking taste of cigarettes. Therefore, even the lotus fibers after softening treatment cannot be applied to cigarettes and can only be applied industrially.
Disclosure of Invention
According to the defects of the prior art, the invention provides the preparation method of the lotus fiber for the cigarette and the moisture-keeping filter rod containing the lotus fiber, the lotus fiber can be used for preparing the fiber which can be applied to the filter rod by a special method, and the lotus fiber is added into the filter rod, so that the cigarette can absorb a relatively proper amount of moisture under the same humidity condition, relatively more moisture can be released during smoking, the cigarette is relatively moisturized and moisturized, the smoke is softened and refined, and the comfort and moisturized of the cigarette are improved.
The technical scheme adopted for solving the technical problems is that the preparation method of the lotus fiber for the cigarettes is characterized by comprising the following steps of:
(1) selecting fresh lotus petioles or lotus roots to remove dirt and impurities on the surfaces of the lotus petioles or the lotus roots, cutting the lotus petioles or the lotus roots into raw material residues, extruding and grinding the raw material residues to form a slurry raw material, adding a cellulose solution into the slurry raw material, heating and stirring for reaction to obtain lotus fiber slurry;
(2) adding 10-30% NaOH aqueous solution with the volume of 1-2 times of that of the lotus fiber pulp obtained in the step (1) into the lotus fiber pulp, completely immersing the lotus fiber pulp into the NaOH aqueous solution, and then uniformly stirring to obtain a mixture;
(3) putting the mixture obtained in the step (2) into a cooking pot, heating and cooking the mixture by using steam, keeping the mixture for 1-2 hours at the temperature of 90-120 ℃ and under the pressure of 0.5-1.0 Mpa, and separating a solid phase from the cooking pot by using a screen to obtain crude fibers;
(4) taking an NMMO aqueous solution (N-methylmorpholine-N-oxide) with the volume fraction of 15-20% as a solvent, adding acetic anhydride with the mass ratio of the solvent of 5-15%, uniformly stirring to obtain a mixed solvent, immersing the crude fiber obtained in the step (2) in the mixed solvent, heating to 60-90 ℃ under the condition that the pressure is 1.0 x 103 Pa-1.0 x 105Pa, and dissolving while performing an esterification reaction to obtain esterified lotus fibers;
(5) adopting CO for the esterified lotus fibers in the step (4)2And (3) boiling, bleaching and softening the tobacco by using supercritical fluid, wherein the treatment conditions are that the temperature is 90-110 ℃, the pressure is 15-30 MPa, and the treatment time is 0.5-1 hour, so that the lotus fiber for the tobacco is obtained.
The invention has the following excellent technical scheme: the concentration of the cellulase solution in the step (1) is 0.5-1%, the addition amount of the cellulase solution is 1-3% of the mass of the pulp raw material, and the solution is heated to 40-60 ℃, stirred and reacted for 2-3 h and then added into lotus fiber pulp.
The invention provides a moisturizing filter tip containing lotus fiber for cigarettes, which is characterized in that: the filter element of the filter tip rod is composed of lotus fiber for cigarettes and acetate fiber, wherein the lotus fiber for cigarettes accounts for 5-35% of the weight of the filter element.
The invention provides a preparation scheme of a moisturizing filter tip, which comprises the following steps: the cigarette lotus fiber is blended into acetate fibers, the acetate fibers are subjected to bundling and curling in sequence to prepare blended fiber tows, the blended fiber tows are subjected to gluing, forming and cutting to prepare a filter element, and finally the filter element is wrapped with forming paper to prepare the cigarette lotus fiber-containing moisturizing filter rod, wherein the lotus fibers account for 5-35% of the weight of the filter element.
The invention also discloses a preparation scheme of the moisturizing filter tip: the moisturizing filter tip rod is prepared by separately bundling and curling the lotus fibers for the cigarettes to prepare lotus fiber tows, gluing, forming and cutting the lotus fiber tows to prepare lotus fiber filter cores; then compounding the lotus fiber filter element with an acetate fiber filter element, and wrapping the lotus fiber filter element with forming paper to prepare a composite moisturizing filter tip rod containing lotus fibers for cigarettes; wherein the lotus fiber accounts for 5-35% of the weight of the filter element.
The invention has the following excellent technical scheme: the lotus fiber accounts for 15% of the weight of the filter element.
The invention has the beneficial effects that:
1. the lotus fiber is subjected to alkalization treatment and then esterification reaction, so that other groups are introduced to a fiber macromolecular chain, the polarity of the fiber surface is reduced, the fiber flexibility is improved, the fiber is more dispersed, the moisture absorption is improved, and the applicability in a filter stick is improved;
2. adopt CO2On one hand, residual colloid, lignin, hemicellulose and the like in the esterified lotus fibers are melted by utilizing the special solubility of the supercritical fluid, and gaps are left in the fibers to swell the fibers and improve the processability; on the other hand, the residue of the chemical solvent is effectively removed, and the reduction of the chemical solventOr eliminating the influence of chemical substance residues on the cigarette aroma, increasing the cost without special packaging materials, improving the safety and improving the smoking taste of the cigarette;
3. the lotus fiber is applied to the filter tip, and the lotus fiber has higher moisture absorption and release rates than cotton fiber, flax fiber and acetate fiber, so that relatively more moisture can be absorbed under the same humidity condition. Relatively more moisture can be released during smoking, so that the cigarettes have relatively moisturizing and moistening effects, the smoke is softened and refined, and the comfort and the moistening effect of the cigarettes are improved; due to higher hygroscopicity and adsorbability, the smoke interception effect is better, and the harmful substances and the tar of the cigarettes can be reduced more favorably.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments.
In the first embodiment, the lotus fiber for tobacco is prepared by the following specific steps:
(1) selecting fresh lotus leaf stalks to remove dirt and impurities on the surfaces, cutting the lotus leaf stalks into raw material residues, extruding and grinding the raw material residues to form slurry raw materials, adding the slurry raw materials into 1% cellulase solution, heating to 50 ℃, stirring and reacting for 2 hours to obtain lotus fiber slurry; wherein the concentration of the cellulase solution is 0.5-1%;
(2) immersing the lotus fiber pulp in the step (1) in a NaOH aqueous solution with the concentration of 20%, and uniformly mixing and stirring to obtain a mixture;
(3) placing the mixture into a cooking pot, heating and cooking with steam, maintaining at 120 deg.C and 1.0Mpa for 1.5 hr, and filtering with a screen to separate solid phase to obtain crude fiber;
(4) adopting an NMMO aqueous solution with a volume fraction of 15-20% as a solvent, adding acetic anhydride with a solvent mass ratio of 10%, uniformly stirring to obtain a mixed solvent, immersing the crude fiber obtained in the step (2) in the mixed solvent, and carrying out a drying process under a pressure of 1.0 × 105Heating to 80 ℃ under the condition of Pa, dissolving and carrying out esterification reaction to obtain esterified lotus fibers;
(5) esterifying in step (4)Lotus fibre adopts CO2And (3) boiling, bleaching and softening the supercritical fluid under the treatment conditions of 90 ℃ and 20MPa for 1 hour to obtain the lotus fiber for the cigarette which can be used for spinning.
The lotus fiber for cigarette prepared by the method is used in a cigarette filter to prepare a filter stick with a moisturizing function, a filter element of the cigarette filter is formed by mixing lotus fiber and acetate fiber, and the weight of the filter element in the lotus fiber station is 15 percent, and the specific preparation process is as follows:
1. mixing the lotus fibers for cigarettes into acetate fibers according to 15% of the weight of the filter element, and then sequentially bundling and curling according to the existing acetate fiber tow preparation method to prepare a blended fiber tow;
2. gluing, forming and cutting the blended tows to prepare a filter element;
3. wrapping the filter element with forming paper to prepare the moisturizing filter tip rod A containing lotus fiber for cigarettes.
Example two: the specific preparation steps of the lotus fiber for the cigarettes are the same as those of the lotus fiber for the cigarettes in the embodiment 1, and the lotus fiber for the cigarettes is compounded with the acetate fiber according to the proportion of 20% of the weight of the filter core to prepare the filter core, and the specific preparation process is as follows: bundling and curling the lotus fibers for cigarettes in sequence according to the existing preparation process of the acetate fiber tows to prepare lotus fiber tows, gluing, forming and cutting the lotus fiber tows to prepare lotus fiber filter core sections, and wrapping forming paper with the acetate fiber tow sections in a compounding manner to prepare the cigarette lotus fiber-containing moisturizing filter tip rod B.
In the third embodiment, the preparation method of the lotus fiber for the cigarettes comprises the following specific steps:
(1) selecting fresh lotus roots to remove dirt and impurities on the surfaces of the lotus roots, cutting the lotus roots into raw material residues, extruding and grinding the raw material residues to form slurry raw materials, adding 3% of cellulase solution into the slurry raw materials, heating to 60 ℃, stirring and reacting for 2 hours to obtain lotus fiber slurry; wherein the concentration of the cellulase solution is 0.5-1%
(2) Immersing the lotus fiber pulp in the step (1) in a NaOH aqueous solution with the concentration of 30%, and uniformly mixing and stirring to obtain a mixture;
(3) placing the mixture into a cooking pot, heating and cooking with steam, maintaining at 120 deg.C and 1.0Mpa for 1.5 hr, and filtering with a screen to separate solid phase to obtain crude fiber;
(4) adopting an NMMO aqueous solution with a volume fraction of 15-20% as a solvent, adding acetic anhydride with a solvent mass ratio of 12%, uniformly stirring to obtain a mixed solvent, immersing the crude fiber obtained in the step (2) in the mixed solvent, and carrying out a drying process under a pressure of 1.0 × 105Heating to 80 ℃ under the condition of Pa, dissolving and carrying out esterification reaction to obtain esterified lotus fibers;
(5) adopting CO for the esterified lotus fibers in the step (4)2And (3) boiling, bleaching and softening the supercritical fluid under the treatment conditions of 90 ℃ and 20MPa for 1 hour to obtain the lotus fiber for the cigarette which can be used for spinning.
The lotus fiber for the cigarettes is compounded with acetate fiber according to the proportion of 20% of the weight of the filter core to prepare the filter core, and the specific preparation process is as follows: the lotus fiber for the cigarette is sequentially bunched and curled according to the existing preparation process of the acetate fiber tow to prepare the lotus fiber tow, then the lotus fiber tow is glued, formed and cut to prepare a lotus fiber filter core section, and the lotus fiber filter core section and the acetate fiber tow section are compounded and wrapped by forming paper to prepare the cigarette lotus fiber-containing moisturizing filter tip rod C.
In the fourth embodiment, the lotus fiber for the cigarette is prepared by the following specific steps:
(1) selecting fresh lotus roots to remove dirt and impurities on the surfaces of the lotus roots, cutting the lotus roots into raw material residues, extruding and grinding the raw material residues to form slurry raw materials, adding the slurry raw materials into a 2.5% cellulase solution, heating to 60 ℃, stirring and reacting for 2 hours to obtain lotus fiber slurry; wherein the concentration of the cellulase solution is 0.5-1%;
(2) immersing the lotus fiber pulp in the step (1) in a NaOH aqueous solution with the concentration of 15%, and uniformly mixing and stirring to obtain a mixture;
(3) putting the mixture obtained in the step (2) into a cooking pot, heating and cooking the mixture by using steam, keeping the mixture for 1 hour at the temperature of 110 ℃ and under the pressure of 0.6Mpa, and separating a solid phase from the cooking pot by using a screen to obtain crude fibers;
(4) adopting an NMMO aqueous solution with a volume fraction of 15-20% as a solvent, adding acetic anhydride with a solvent mass ratio of 8%, uniformly stirring to obtain a mixed solvent, immersing the crude fiber obtained in the step (2) in the mixed solvent, and carrying out pressure treatment under a pressure of 1.0 × 103Heating to 65 ℃ under the condition of Pa, dissolving and esterifying to obtain esterified lotus fibers;
(5) adopting CO for the esterified lotus fibers in the step (4)2And (3) boiling, bleaching and softening the supercritical fluid under the treatment conditions of 90 ℃ of temperature, 15MPa of pressure and 0.6 hour of treatment time to obtain the lotus fiber for the cigarettes, which can be used for spinning.
The lotus fiber for cigarette prepared by the method is used in a cigarette filter to prepare a filter stick with a moisturizing function, a filter element of the cigarette filter is formed by mixing lotus fiber and acetate fiber, and the weight of the lotus fiber station filter element is 25%, and the preparation process specifically comprises the following steps:
1. mixing the lotus fiber for the cigarette into acetate fiber according to 25% of the weight of the filter element, and then sequentially bundling and curling according to the existing preparation method of the acetate fiber tow to prepare a blended fiber tow;
2. gluing, forming and cutting the blended tows to prepare a filter element;
3. wrapping the filter element with forming paper to prepare the cigarette lotus fiber-containing moisturizing filter tip rod D.
The cigarette filter tip A, B, C, D and the cellulose acetate filter tip prepared in the four embodiments are made into a cigarette under the same platform (the same tobacco shred, tipping paper, cigarette paper and the same machine), and a cigarette sample with consistent weight and suction resistance is selected and is respectively compared with a cellulose acetate filter cigarette in a test from three aspects of cigarette sensory evaluation, smoke chemical composition comparison, comfort evaluation and the like. Wherein the cigarette sensory evaluation pair ratio is shown in table 1; the smoke chemistry ratio is shown in table 2, and the comfort evaluation ratio is shown in table 3.
TABLE 1 cigarette sense evaluation comparison table
| Gloss of | Fragrance | Tuning by hand | Miscellaneous qi | Irritation property | Aftertaste | Total score | |
| Acetate fiber filter tip cigarette | 5.0 | 29.5 | 5.0 | 11.0 | 17.0 | 21.5 | 89.0 |
| Example one | 5.0 | 30.0 | 5.0 | 11.0 | 18.0 | 22.0 | 91.0 |
| Example two | 5.0 | 30.0 | 5.0 | 11.0 | 18.0 | 22.0 | 91.0 |
| EXAMPLE III | 5.0 | 30.0 | 5.0 | 11.0 | 18.0 | 22.5 | 91.5 |
| Example four | 5.0 | 30.0 | 5.0 | 11.0 | 18.5 | 22.5 | 92.0 |
As can be seen from the sensory evaluation of the cigarettes in Table 1: the cigarette with the filter stick using part of lotus fibers has improved aroma texture, basically unchanged aroma amount and slightly improved overall aroma index; mainly obviously reduces the irritation and obviously improves the aftertaste.
TABLE 2 Smoke chemical composition comparison table (Single cigarette content)
From the chemical composition comparison in table 2 it can be seen that: the tar reduction, water content and harm reduction effects of the mixed tows of lotus fibers and acetate fibers are superior to those of a filter stick formed by compounding two tows, and are superior to those of an acetate filter stick; the tar is reduced, the water content is obviously improved, and harmful substances such as CO, hydrocyanic acid, NNK and the like are obviously reduced.
The moisture content in the detection data is the moisture content of the cigarette detected by the smoking machine, and the moisture content of the tobacco shreds in the cigarette is detected independently, so that the result is basically equivalent to the moisture content of the tobacco shreds in the cigarette with the common acetate fiber filter stick, slightly higher by 5-12% and obviously different from the detected moisture content. Therefore, the lotus fiber filter stick cigarette has good moisture absorption and release effects during smoking, has small influence on the moisture content of tobacco shreds in cigarettes, and is favorable for storing and storing the cigarettes.
TABLE 3 evaluation of cigarette comfort
As can be seen from the evaluation of the comfort level of the cigarette in table 3, the cigarette rolled by using the mixed tow filter rod made of lotus fibers and acetate fibers and the composite filter rod made of lotus fibers and acetate fibers has the advantages of obviously improved smoke softness and reduced smoke particles compared with the acetate fiber filter rod on the same platform, and due to the better moisture absorption characteristics, the irritation of the oral cavity, the nasal cavity and the throat is obviously reduced, the mouth feel is improved, the fragrance residue is reduced, the sensory burden is reduced and improved.
The result of smoke panel test can also reflect that the lotus fiber has better moisture absorption performance, so that the smoke is softer, and the dry feeling and the irritation of the smoke are improved (the bigger the dry feeling and the irritation, the lower the score is); the retention effect on chemical components is improved, and the reaction result in the smoking is that the granularity of smoke is reduced (the smaller the granularity is, the higher the fraction is), and the fragrance residue is reduced.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. A moisture-keeping filter rod containing lotus fiber for cigarettes is characterized in that the filter rod is formed by independently bundling and curling lotus fiber for cigarettes to form lotus fiber tows, gluing, forming and cutting the lotus fiber tows to form lotus fiber filter cores; then compounding the lotus fiber filter element with an acetate fiber filter element, and wrapping the lotus fiber filter element with molding paper to prepare a composite moisturizing filter tip rod containing lotus fibers for cigarettes; the lotus fiber accounts for 15% of the weight of the filter element; the preparation method of the lotus fiber for the cigarettes comprises the following steps:
(1) selecting fresh lotus leaf stalks or lotus roots to remove dirt and impurities on the surfaces of the lotus leaf stalks or the lotus roots, cutting the lotus leaf stalks or the lotus roots into raw material residues, extruding and grinding the raw material residues to form slurry raw materials, adding cellulase solution with the mass concentration of 0.5-1% into the slurry raw materials, heating to 40-60 ℃, stirring for 2-3 hours, and stirring for reaction to obtain lotus fiber slurry, wherein the addition amount of the cellulase solution is 1-3% of the mass of the slurry raw materials;
(2) adding 10-30% NaOH aqueous solution with the volume of 1-2 times of that of the lotus fiber pulp obtained in the step (1) into the lotus fiber pulp, completely immersing the lotus fiber pulp into the NaOH aqueous solution, and then uniformly stirring to obtain a mixture;
(3) putting the mixture obtained in the step (2) into a cooking pot, heating and cooking the mixture by using steam, keeping the mixture for 1-2 hours at the temperature of 90-120 ℃ and under the pressure of 0.5-1.0 Mpa, and separating a solid phase from the cooking pot by using a screen to obtain crude fibers;
(4) adopting an NMMO aqueous solution with a volume fraction of 15-20% as a solvent, adding acetic anhydride with a solvent mass ratio of 5-15%, uniformly stirring to obtain a mixed solvent, immersing the crude fiber obtained in the step (3) in the mixed solvent, and carrying out a pressure treatment under a pressure of 1.0 × 103 Pa ～ 1.0×105Heating to 60-90 ℃ under the condition of Pa, and dissolving while carrying out esterification reaction to obtain esterified lotus fibers;
(5) adopting CO for the esterified lotus fibers in the step (4)2And (3) boiling, bleaching and softening the supercritical fluid under the treatment conditions of 90-110 ℃, 15-30 MPa and 0.5-1 hour of treatment time to obtain the lotus fiber for the cigarettes.
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| US8201564B2 (en) * | 2005-12-30 | 2012-06-19 | Philip Morris Usa Inc. | Cigarette filters |
| CN101165229A (en) * | 2006-10-16 | 2008-04-23 | 闽江学院 | Lotus fibre and its preparation method and products |
| CN101532260B (en) * | 2009-04-17 | 2011-06-22 | 华南理工大学 | Method for pulping by cooking solid base in plant fiber |
| GB0916031D0 (en) * | 2009-09-14 | 2009-10-28 | Univ Nottingham | Cellulose nanoparticle aerogels,hydrogels and organogels |
| GB2474694B (en) * | 2009-10-23 | 2011-11-02 | Innovia Films Ltd | Biodegradable composites |
| CN101845100B (en) * | 2010-06-17 | 2012-06-27 | 杨占平 | Method for manufacturing cellulose diacetate by using natural bamboo fiber as raw material |
| US20120000480A1 (en) * | 2010-06-30 | 2012-01-05 | Sebastian Andries D | Biodegradable cigarette filter |
| CN103110190B (en) * | 2013-02-04 | 2014-12-10 | 湖北中烟工业有限责任公司 | Cigarette filter made of loofah sponge fiber and preparation method thereof |
| KR102211186B1 (en) * | 2014-12-31 | 2021-02-03 | 코오롱인더스트리 주식회사 | Lyocell Material Cigarette Filter and Method for the Same |
| CN105803543B (en) * | 2016-05-13 | 2018-07-06 | 东莞市联洲知识产权运营管理有限公司 | A kind of hygrometric state dry spinning method of lotus fiber |
| CN106480510A (en) * | 2016-09-30 | 2017-03-08 | 四川大学 | A kind of combination method prepares lotus fibre technology |
| CN106617286A (en) * | 2017-01-16 | 2017-05-10 | 河北中烟工业有限责任公司 | Preparation method of lotus leaf-type composite filter rods of cigarettes |
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