Tar-reducing and harm-reducing bio-based nanofiber tipping paper and production process thereof

Abstract

The invention discloses a tar-reducing and harm-reducing bio-based nanofiber tipping paper and a production process thereof. The tipping paper comprises 30-70 parts of softwood pulp, 20-30 parts of a binder, 10-30 parts of a binder, and 10-30 parts of a binder. 70 to 80 parts of hardwood pulp; 3 to 6 parts of cationic polyacrylamide; 3-5 parts of light calcium carbonate; 10 to 15 parts of porous starch; and 5 to 15 parts of tourmaline micro powder modified by cationic starch. The tourmaline is modified through the cationic starch, the surface of the tourmaline can be coated with the cationic starch through the electrostatic adsorption effect, the modified tourmaline is not prone to agglomeration and can be evenly distributed in the paper, and the tourmaline has pyroelectricity, piezoelectricity and spontaneous polarization effect and can permanently release negative oxygen ions; and harmful substances with polarity and charge effects released by burning of cigarettes can be adsorbed, so that the aim of reducing tar and harm is fulfilled.

Description

Technical Field

[0001] This invention relates to the field of tipping paper technology, specifically to a tar-reducing and harm-reducing bio-based nanofiber tipping paper and its production process. Background Technology

[0002] As living standards improve, while still enjoying the sensory stimulation of cigarettes, people are also paying attention to the harm cigarettes cause to the human body. Reducing the tar content of cigarettes has become a development trend in the tobacco industry. Existing methods for reducing tar usually involve punching micropores in the tipping paper. During the smoking process, the micropores in the tipping paper can dilute the smoke, thereby effectively improving the ventilation of the cigarette and achieving the purpose of reducing tar.

[0003] However, this method of reducing tar content has a problem: too few micropores have a limited effect on diluting the smoke, resulting in an insignificant tar reduction; while too many micropores can significantly dilute the smoke and reduce tar content, for some consumers, excessive dilution can negatively impact the smoking experience and fail to meet their needs. Therefore, it is necessary to consider reducing tar content from the perspective of tipping paper materials. Summary of the Invention

[0004] The technical problem to be solved: Existing methods for reducing tar content are not very effective and can lead to excessive dilution of the smoke, affecting the smoking experience and failing to meet consumer demand.

[0005] To address the aforementioned technical problems, this invention provides a tar-reducing and harm-reducing bio-based nanofiber tipping paper and its production process. Technical solution

[0006] A bio-based nanofiber tipping paper for reducing tar and harm includes: Softwood pulp: 30-70 parts; hardwood pulp: 70-80 parts; Cationic polyacrylamide: 3-6 parts; Light calcium carbonate: 3-5 parts; Porous starch: 10-15 parts; Tourmaline micro powder modified with cationic starch: 5-15 parts.

[0007] A production process for tar-reducing and toxicity-reducing bio-based nanofiber tipping paper includes the following steps: S1: Add tourmaline to deionized water and ultrasonically disperse it evenly to obtain a tourmaline dispersion; S2: Dissolve cationic starch in deionized water, heat to gelatinize, and obtain gelatinized cationic starch; S3: The tourmaline dispersion prepared in S1 was added dropwise to the gelatinized cationic starch in S2 under rapid stirring. After cooling to room temperature, it was washed with anhydrous ethanol, allowed to stand, filtered and dried, crushed in a mortar and then ground in a ball mill to obtain modified tourmaline micro powder. S4: Add softwood pulp and hardwood pulp to a pulper for pulping to obtain pulp; then add cationic polyacrylamide, light calcium carbonate, porous starch and modified tourmaline powder to the pulp and mix evenly to obtain paper pulp; after dewatering, the paper pulp is pressed into shape on a paper press.

[0008] Furthermore, the cationic starch has a mass of 3-5% of tourmaline.

[0009] Furthermore, the cationic starch is a quaternary ammonium cationic starch, obtained by etherification reaction of cassava starch molecules with amine compounds, wherein the etherifying agents include 3-chloro-2-hydroxypropyltrimethylammonium chloride and 2,3-epoxypropyltrimethylammonium chloride.

[0010] Furthermore, the mass of deionized water in S1 is 5-10 times that of tourmaline; the ultrasonic dispersion time is 30-40 minutes.

[0011] Furthermore, the mass of deionized water in S2 is 15-35 times that of cationic starch; the gelatinization temperature is 90-95℃, and the gelatinization time is 30-40 minutes.

[0012] Furthermore, the drying temperature in S3 is 20-30℃, and the drying time is 2-5 hours.

[0013] Furthermore, the pulping concentration in the S4 pulping process is controlled at 3-5%.

[0014] Furthermore, the beating degree of S4 pulp is controlled at 65-75°SR.

[0015] 3. Beneficial effects: This invention provides a tar-reducing and harm-reducing bio-based nanofiber tipping paper and its production process. The process involves modifying tourmaline with cationic starch. The cationic starch can coat the surface of tourmaline through electrostatic adsorption. The modified tourmaline is less prone to agglomeration and can be evenly distributed in the paper. Tourmaline possesses pyroelectricity, piezoelectricity, and spontaneous polarization effects, enabling it to permanently release negative oxygen ions and adsorb harmful substances with polarity and charged effects released from cigarette combustion, thus achieving tar reduction and harm reduction. Porous starch has adsorption properties, which, in conjunction with tourmaline, can further enhance the adsorption effect.

[0016] When tourmaline is processed into microparticles, its specific surface area increases significantly. The charge density of defects, edges, and kinks in the powder particles increases, leading to higher surface energy and a greater number of active sites and centers formed by unsaturated surface bonds. This gives tourmaline a tendency to spontaneously adsorb charged harmful substances from flue gas. After tourmaline crystals are pulverized, they break along different crystal planes in different directions, exposing a large number of large-radius cations such as Na, Mg, and Fe on the crystal surface. These cations are easily attracted by polar water molecules and are readily dragged away from the crystal surface. As a result, the loss of these metal cations causes the mineral surface to become negatively charged, attracting even more positively charged substances from the flue gas. Detailed Implementation

[0017] The present invention will now be described in detail. Example 1:

[0018] A production process for tar-reducing and toxicity-reducing bio-based nanofiber tipping paper includes the following steps: S1: Add 10g of tourmaline (average particle size 7.173μm) to 60g of deionized water, sonicate for 35 minutes, and disperse evenly to obtain tourmaline dispersion; S2: Dissolve 0.3g of cationic starch (etherifying agent is 3-chloro-2-hydroxypropyltrimethylammonium chloride) in 10g of deionized water, heat to 95℃ and gelatinize for 35 minutes to obtain gelatinized cationic starch; S3: The tourmaline dispersion prepared in S1 was added dropwise to the gelatinized cationic starch in S2 under rapid stirring. After cooling to room temperature, it was washed with anhydrous ethanol, allowed to stand, filtered, dried at 25°C for 3 hours, crushed in a mortar, and then ground in a ball mill to obtain modified tourmaline micro powder. S4: Add 50g of softwood pulp and 70g of hardwood pulp to a beater and beat them. The concentration is controlled at 3-5% and the freeness is controlled at 65-75°SR to obtain pulp. Then add 5g of cationic polyacrylamide, 3g of light calcium carbonate, 12g of porous starch and 10g of modified tourmaline powder to the pulp and mix them evenly to obtain paper pulp. After dewatering, the paper pulp is pressed into shape on a paper press. Example 2:

[0019] A production process for tar-reducing and toxicity-reducing bio-based nanofiber tipping paper includes the following steps: S1: Add 10g of tourmaline (average particle size 7.173μm) to 60g of deionized water, sonicate for 35 minutes, and disperse evenly to obtain tourmaline dispersion; S2: Dissolve 0.5g of cationic starch (etherifying agent is 3-chloro-2-hydroxypropyltrimethylammonium chloride) in 15g of deionized water, heat to 90℃ and gelatinize for 35 minutes to obtain gelatinized cationic starch; S3: The tourmaline dispersion prepared in S1 was added dropwise to the gelatinized cationic starch in S2 under rapid stirring. After cooling to room temperature, it was washed with anhydrous ethanol, allowed to stand, filtered, dried at 25°C for 3 hours, crushed in a mortar, and then ground in a ball mill to obtain modified tourmaline micro powder. S4: Add 70g of softwood pulp and 80g of hardwood pulp to a beater and beat them. The concentration is controlled at 3-5% and the freeness is controlled at 65-75°SR to obtain pulp. Then add 6g of cationic polyacrylamide, 4g of light calcium carbonate, 10g of porous starch and 15g of modified tourmaline powder to the pulp and mix them evenly to obtain paper pulp. After dewatering, the paper pulp is pressed into shape on a paper press. Example 3:

[0020] A production process for tar-reducing and toxicity-reducing bio-based nanofiber tipping paper includes the following steps: S1: Add 10g of tourmaline (average particle size 7.173μm) to 60g of deionized water, sonicate for 35 minutes, and disperse evenly to obtain tourmaline dispersion; S2: Dissolve 0.4g of cationic starch (etherifying agent is 2,3-epoxypropyltrimethylammonium chloride) in 10g of deionized water, heat to 95℃ and gelatinize for 35 minutes to obtain gelatinized cationic starch; S3: The tourmaline dispersion prepared in S1 was added dropwise to the gelatinized cationic starch in S2 under rapid stirring. After cooling to room temperature, it was washed with anhydrous ethanol, allowed to stand, filtered, dried at 25°C for 3 hours, crushed in a mortar, and then ground in a ball mill to obtain modified tourmaline micro powder. S4: Add 30g of softwood pulp and 75g of hardwood pulp to a beater and beat them. The concentration is controlled at 3-5% and the freeness is controlled at 65-75°SR to obtain pulp. Then add 3g of cationic polyacrylamide, 4g of light calcium carbonate, 15g of porous starch and 15g of modified tourmaline powder to the pulp and mix them evenly to obtain paper pulp. After dewatering, the paper pulp is pressed into shape on a paper press.

[0021] Comparative Example 1: A production process for tar-reducing and toxicity-reducing bio-based nanofiber tipping paper includes the following steps: Add 30g of softwood pulp and 75g of hardwood pulp to a beater for beating. Control the concentration at 3-5% and the freeness at 65-75°SR to obtain pulp. Then add 3g of cationic polyacrylamide, 4g of light calcium carbonate, 15g of porous starch and 15g of tourmaline powder to the pulp and mix evenly to obtain paper pulp. After dewatering, the paper pulp is pressed into shape on a paper press.

[0022] Test example: Cigarettes were prepared using Examples 1-3, Comparative Example 1, and commercially available tipping paper, respectively. A rotary smoking machine was used to perform a complete analysis of the smoke from the prepared cigarettes. The total particulate matter and tar of the sample cigarettes were determined according to the methods defined in GB / T19609-2004 "Cigarettes: Determination of Total Particulate Matter and Tar by Conventional Analytical Smoking Machine". Nicotine, moisture, and carbon monoxide of the sample cigarettes were determined according to the methods defined in YC / T156-2001 "Cigarettes: Determination of Nicotine in Total Particulate Matter (Gas Chromatography)", YC / T157-2001 "Cigarettes: Determination of Moisture in Total Particulate Matter (Gas Chromatography)", and YC / T30-1996 "Cigarettes: Determination of Carbon Monoxide in Gas Smoke (Non-scattering Infrared Method)". The measurements were repeated three times, and the average value was used for analysis. The results of the smoke composition analysis are shown in Table 1.

[0023] Table 1: Flue Gas Composition Analysis

[0024] As shown in Table 1, the samples of Examples 1-3 showed a significant reduction in tar and carbon monoxide content compared to commercially available ordinary tipping paper. The tar content was reduced by 1.5-2.2 mg / piece, a reduction rate of over 11%, and the carbon monoxide content was reduced by 2.0-2.4 mg / piece, a reduction rate of over 14.6%. Although the tar and carbon monoxide content in Comparative Example 1 were also reduced compared to commercially available ordinary tipping paper, the reduction was smaller, and agglomeration was observed.

[0025] Further testing was conducted on the harmful components in the flue gas, and the results are shown in Table 2.

[0026] Table 2: Analysis of harmful components in flue gas

[0027] As shown in Table 2, compared with commercially available ordinary tipped paper, the samples of Examples 1-3 showed a significant reduction in harmful components in their flue gas. Specifically, phenolic substances decreased by 26.04-30.18%, NH3 decreased by 28.99-31.22%, the polycyclic aromatic hydrocarbon benzo[a]pyrene decreased by 39.59-41.40%, and NO... x The levels of harmful components in Comparative Example 1 were reduced by 19.67-21.86%, and HCN was reduced by 26.20-27.37%. Although the levels of various harmful components in Comparative Example 1 were also reduced compared to commercially available ordinary tipping paper, the reduction was relatively small.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the invention. Any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be defined by the scope of the claims of this application.

Claims

1. A bio-based nanofiber tipping paper for reducing tar and harmful substances, characterized in that, include: Softwood pulp: 30-70 parts; hardwood pulp: 70-80 parts; Cationic polyacrylamide: 3-6 parts; Light calcium carbonate: 3-5 parts; Porous starch: 10-15 parts; Tourmaline micro powder modified with cationic starch: 5-15 parts.

2. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 1, characterized in that, Includes the following steps: S1: Add tourmaline to deionized water and ultrasonically disperse it evenly to obtain a tourmaline dispersion; S2: Dissolve cationic starch in deionized water, heat to gelatinize, and obtain gelatinized cationic starch; S3: The tourmaline dispersion prepared in S1 was added dropwise to the gelatinized cationic starch in S2 under rapid stirring. After cooling to room temperature, it was washed with anhydrous ethanol, allowed to stand, filtered and dried, crushed in a mortar and then ground in a ball mill to obtain modified tourmaline micro powder. S4: Add softwood pulp and hardwood pulp to a pulper for pulping to obtain pulp; then add cationic polyacrylamide, light calcium carbonate, porous starch and modified tourmaline powder to the pulp and mix evenly to obtain paper pulp; after dewatering, the paper pulp is pressed into shape on a paper press.

3. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2, characterized in that, The cationic starch has a mass of 3-5% of tourmaline.

4. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2 or 3, characterized in that, The cationic starch is a quaternary ammonium cationic starch, which is obtained by etherification reaction of cassava starch molecules with amine compounds. The etherifying agents include 3-chloro-2-hydroxypropyltrimethylammonium chloride and 2,3-epoxypropyltrimethylammonium chloride.

5. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2, characterized in that, The mass of deionized water in S1 is 5-10 times that of tourmaline; the ultrasonic dispersion time is 30-40 minutes.

6. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2, characterized in that, In S2, the mass of deionized water is 15-35 times that of cationic starch; the gelatinization temperature is 90-95℃, and the gelatinization time is 30-40 minutes.

7. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2, characterized in that, The drying temperature in S3 is 20-30℃, and the drying time is 2-5 hours.

8. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 2, characterized in that, The pulping concentration during the S4 pulping process is controlled at 3-5%.

9. The production process of a tar-reducing and harm-reducing bio-based nanofiber tipping paper according to claim 8, characterized in that, The beating degree of S4 pulp is controlled at 65-75°SR.

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