Fragrance line composite filter stick and preparation method thereof

Abstract

The invention discloses a spice line composite filter stick and a preparation method thereof, the spice line composite filter stick comprises an external protection layer and a spice layer, the external protection layer and the spice layer are jointly connected with a filter piece through a connecting piece, the filter piece is located in the external protection layer, and an inner core structure is arranged between the external protection layer and the spice layer. The external protection layer, the perfume layer and the inner core structure are sealed together to define a hollow bin, and the filter part is located in the hollow bin; the gel line prepared by compounding the polyethylene glycol, the chitosan and the sodium carboxymethyl cellulose simulates a traditional fragrance line, the perfuming amount, the perfuming uniformity, the perfuming controllability and the perfuming stability of the fragrance line filter stick can be effectively increased, the gel prepared by compounding the polyethylene glycol, the chitosan and the sodium carboxymethyl cellulose is used for loading the tobacco essence, and the fragrance of the tobacco can be effectively improved. The tobacco essence is uniformly dispersed in the slow-release gel, so that the slow-release property of the tobacco essence is improved, the external protective layer can reduce the contact between the gel and air, and the volatilization of the tobacco essence in the storage process is reduced.

Description

Technical Field

[0001] This invention relates to the field of composite filter rod technology, and in particular to a fragrance-line composite filter rod and its preparation method. Background Technology

[0002] As people's living standards improve, their health awareness also increases. While smokers gain physiological and psychological satisfaction from smoking, they also hope to minimize the harm caused by smoking. However, current technologies for reducing the harmful tar content in tobacco reduce some aroma components in cigarette smoke to varying degrees, affecting the smoker's experience. Therefore, developing a low-harm cigarette that can meet the harm reduction needs of smokers while maintaining a high aroma has become an important research topic in the tobacco industry in recent years. Adding some important aroma-producing substances from plants to cigarettes to compensate for the loss of aroma substances caused by dilution or runoff is an effective way to compensate for cigarette aroma. At the same time, adding functional particulate materials to cigarette filter rods can also effectively compensate for cigarette aroma in order to enrich the aroma.

[0003] In Chinese patent CN105962414 A, the filter rod needs to be rinsed with pure water after using cellulose acetate, which makes the use of the filter rod not environmentally friendly and generates industrial wastewater. In addition, the cellulose acetate core rod itself has an unpleasant smell and is not suitable for pilot cigarettes. Therefore, this invention proposes a flavored composite filter rod and its preparation method to solve the problems existing in the prior art. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a fragrance-line composite filter rod and its preparation method. This fragrance-line composite filter rod and its preparation method utilize a gel thread made of polyethylene glycol, chitosan, and sodium carboxymethyl cellulose to simulate traditional fragrance threads. This effectively increases the amount of fragrance added to the filter rod, as well as the uniformity, controllability, and stability of the fragrance addition. The gel made of polyethylene glycol, chitosan, and sodium carboxymethyl cellulose loads tobacco flavorings, which are uniformly dispersed in the sustained-release gel, improving the sustained-release properties of the tobacco flavorings. The outer protective layer reduces the contact between the gel and air, minimizing the volatilization of tobacco flavorings during storage, thereby ensuring reduced loss of tobacco flavorings during production and storage.

[0005] To achieve the objectives of this invention, the invention is implemented through the following technical solution: a fragrance-line composite filter rod and its preparation method, comprising an outer protective layer and a fragrance layer, wherein the outer protective layer and the fragrance layer are connected together by a filter element, the filter element is located inside the outer protective layer, and an inner core structure is provided between the outer protective layer and the fragrance layer, the outer protective layer, the fragrance layer and the inner core structure are sealed together to form a hollow chamber, and the filter element is located inside the hollow chamber.

[0006] Further improvements include the following steps;

[0007] Step 1: Preparation of the mixed solution: Chitosan, sodium carboxymethyl cellulose and modified starch are added to an aqueous solution of sodium citrate, heated and stirred at 60°C for 0.6 hours, and then cooled to obtain the mixed solution;

[0008] Step 2: Prepare the gel. Heat polyethylene glycol to 30-80°C until it is completely melted. Then, mix the molten polyethylene glycol with the mixed solution at a weight ratio of 1:1 to 10:1 to obtain the gel.

[0009] Step 3: Add menthol. Add menthol flavoring to the gel and mix evenly to obtain a mixed solution containing menthol.

[0010] Step 4: Create the flavoring thread. Use an adjustable nozzle to spray a menthol-containing mixed solution onto the inside of the flavoring layer. After it passes through the smoking gun and filter and solidifies, the mixed solution cools and solidifies, forming a menthol-containing flavoring thread in the flavoring layer.

[0011] Step 5: Store the fragrance thread in a sealed container for three weeks, test the menthol content of the composite gel thread, and obtain the completed fragrance thread composite filter rod.

[0012] A further improvement is made in that: in step one, the modified starch is physically modified starch, chemically modified starch, biologically modified starch, and composite modified starch; the saturated solution is mixed with sodium citrate aqueous solution to obtain a mixed solution, wherein the volume ratio of the concentration of the saturated solution to that of sodium citrate aqueous solution is 4:6.

[0013] A further improvement is made in step two, where polyethylene glycol with a molecular weight of 5000 is selected. After the polyethylene glycol is completely melted, it is added to the mixed solution. The molten polyethylene glycol and the mixed solution are mixed evenly using a stirrer at a speed of 600 rpm. The mixed solution is then placed in a mold for curing and shaping, and the curing time is 16 hours.

[0014] A further improvement is that, in step three, menthol is a colorless needle-like crystal and granular organic compound, and the amount of menthol flavoring substance is 24% of the amount of the composite gel.

[0015] A further improvement is that, in step four, the adjustable nozzle evenly sprays the menthol-containing mixed solution onto the surface of the filter tip bundle and the flow rate can be adjusted as required.

[0016] A further improvement is made in step five, where the menthol content in mainstream cigarette smoke is detected by combining a smoking machine with GC-MS. Twenty sample cigarettes are collected as a group and replenished through a Cambridge filter in the smoking machine. The detection results are obtained by GC-MS analysis using headspace solid-phase microextraction technology.

[0017] A further improvement is that, in step four, the diameter of the menthol-containing fragrance thread is 2.0 mm.

[0018] A further improvement is made in step four, where five menthol-containing fragrance lines are placed along the axis of the filter rod in the fragrance layer.

[0019] Further improvements include: the outer protective layer is made of polyethylene, the fragrance layer is a solution carrier, and the filter element is an activated carbon fiber structure.

[0020] The beneficial effects of this invention are as follows: This invention uses a gel thread made of polyethylene glycol, chitosan, and sodium carboxymethyl cellulose to simulate traditional fragrance threads. This effectively increases the amount of fragrance added to the fragrance thread filter rod, as well as the uniformity, controllability, and stability of the fragrance addition. The gel made of polyethylene glycol, chitosan, and sodium carboxymethyl cellulose loads the tobacco flavoring, which is uniformly dispersed in the slow-release gel, improving the slow-release properties of the tobacco flavoring. The outer protective layer reduces the contact between the gel and air, reducing the volatilization of the tobacco flavoring during storage, thereby ensuring reduced loss of tobacco flavoring during production and storage, and thus ensuring the aroma-enhancing effect on cigarettes during smoking. The flavoring layer improves the adhesion between the composite gel and the cigarette filter tip, and improves the stability of the composite gel during use. During heating, a liquid-solid-liquid phase transition process occurs, which can effectively disperse the flavoring substances uniformly, reduce volatilization, and effectively release them, while increasing the functionality of the cigarette filter rod. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms installation, connection, and linking should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In document CN105962414 In section A, cellulose acetate is constrained by one or more flavor threads and combined with cellulose acetate filter rod segments to form a filter rod. This solves the problem that existing ordinary flavor thread filter rods cannot carry more flavor flavors. At the same time, it replaces the forming paper to constrain cellulose acetate and form a filter rod, expanding the functional space of the filter rod, meeting the ever-changing cigarette consumption needs, forming the characteristics of cigarette products, and enhancing product competitiveness. It can use flavor threads to replace forming paper, reducing the dependence of forming paper production on wood, avoiding the huge negative impact of large-scale deforestation on the environment, and simplifying the material preparation and warehousing logistics of filter rod production, thus improving production efficiency. In terms of appearance, it has a significant difference from the currently used filter rods, making it convenient for consumers to make intuitive comparisons and distinctions. However, it has disadvantages such as easy volatility of flavor substances, short aroma retention time, uneven aroma release, low adsorption of flavor substances, and low transfer efficiency. In this application, a gel made by combining polyethylene glycol and chitosan carboxymethyl cellulose sodium undergoes a liquid-solid-liquid phase transition process during heating, which can effectively produce uniform dispersion of flavor substances, reduce volatilization, and effectively release them. Example 1

[0026] according to Figure 1 As shown, this embodiment provides a fragrance-line composite filter rod and its preparation method, including an outer protective layer and a fragrance layer. The outer protective layer and the fragrance layer are connected together by a filter element, which is located inside the outer protective layer. An inner core structure is provided between the outer protective layer and the fragrance layer. The outer protective layer, the fragrance layer and the inner core structure are sealed together to form a hollow chamber, and the filter element is located inside the hollow chamber.

[0027] Includes the following steps;

[0028] Step 1: Preparation of the mixed solution: Chitosan, sodium carboxymethyl cellulose and modified starch are added to an aqueous solution of sodium citrate, heated and stirred at 60°C for 0.6 hours, and then cooled to obtain the mixed solution;

[0029] Step 2: Prepare the gel. Heat polyethylene glycol to 30-80°C until it is completely melted. Then, mix the molten polyethylene glycol with the mixed solution at a weight ratio of 1:1 to 10:1 to obtain the gel.

[0030] Step 3: Add menthol. Add menthol flavoring to the gel. The amount of menthol flavoring is 24% of the total amount of the composite gel. Mix evenly to obtain a mixed solution containing menthol.

[0031] Step 4: Create the flavoring thread. Use an adjustable nozzle to spray a menthol-containing mixed solution onto the inside of the flavoring layer. After it passes through the smoking gun and filter and solidifies, the mixed solution cools and solidifies, forming a menthol-containing flavoring thread in the flavoring layer.

[0032] Step 5: Store the fragrance thread in a sealed container for three weeks, test the menthol content of the composite gel thread, and obtain the completed fragrance thread composite filter rod.

[0033] Chitosan, a polyglucosamine, is a natural polymer with excellent biocompatibility and blood compatibility. Its main function in this invention is to provide good adhesive properties and adsorb harmful substances in mainstream cigarette smoke. Sodium carboxymethyl cellulose, a cellulose-based substance, is a white or off-white fibrous powder or granules that easily disperses in water to form a transparent gel solution. Its main function in this invention is as a safe and hygienic food-grade thickener. Modified starch, based on natural starch, is produced by improving starch properties and expanding its application range through physical, chemical, or enzymatic treatment. New functional groups are introduced into the starch molecules to change the size of starch molecules and the properties of starch granules, thereby altering the natural characteristics of starch. The modified starch used in this invention includes physically modified starch, chemically modified starch, biologically modified starch, and composite modified starch. Starch obtained by modifying starch through physical means such as heat, mechanical force, and physical fields is called physically modified starch. These physical means mainly include microwave treatment, ultrasonic treatment, ball milling, and extrusion treatment. Sodium citrate's main function is its excellent antioxidant properties.

[0034] In step one, the modified starch is physically modified starch, chemically modified starch, biologically modified starch and composite modified starch. The saturated solution is mixed with sodium citrate aqueous solution to obtain a mixed solution, wherein the volume ratio of the concentration of the saturated solution to the concentration of sodium citrate aqueous solution is 4:6.

[0035] In step two, polyethylene glycol with a molecular weight of 5000 is selected. After the polyethylene glycol is completely melted, it is added to the mixed solution. The molten polyethylene glycol and the mixed solution are mixed evenly using a stirrer at a speed of 600 rpm. The mixed solution is then placed in a mold for curing and shaping for 16 hours.

[0036] In step three, menthol is a colorless needle-like crystal and granular organic compound.

[0037] In step four, the adjustable nozzle is a nozzle that can uniformly spray the menthol-containing mixed solution onto the surface of the filter filament bundle and can adjust the flow rate as required.

[0038] In step five, the menthol content in the mainstream cigarette smoke was detected by combining a smoking machine with GC-MS. Twenty sample cigarettes were collected as a group and replenished through the Cambridge filter of the smoking machine. The GC-MS analysis was performed using headspace solid-phase microextraction technology to obtain the detection results. The detection results showed that the menthol content in the flavoring thread decreased by about 9.2%, while that in the blank sample decreased by about 74.1%, which directly reflects that the flavoring thread composite filter rod made of polyethylene glycol and chitosan carboxymethyl cellulose sodium has a strong sustained-release effect.

[0039] In step four, the diameter of the menthol-containing fragrance thread is 2.0 mm.

[0040] In step four, five menthol-containing fragrance lines are placed along the axis of the filter rod in the fragrance layer.

[0041] The outer protective layer is made of polyethylene, the fragrance layer is a solution carrier, and the filter element is an activated carbon fiber structure. Example 2

[0042] Experimental method: Menthol was dissolved in propylene glycol to prepare a 20% solution by weight. 20 μL of this solution was injected into cigarette filter rods using a microsyringe to form two sets of samples (40 cigarettes per set). The first set was placed in an open temperature and humidity chamber at 23°C and 60% relative humidity for three weeks to equilibrate. The second set was prepared under the same conditions after three weeks. Immediately after completion, the menthol content in the mainstream smoke of both sets of samples was measured.

[0043] The experimental results showed that the menthol content in the gel fragrance thread sample decreased by about 9.2%, while that in the blank sample decreased by about 74.1%, which directly reflects the strong sustained-release effect of the fragrance thread composite filter rod made of polyethylene glycol and chitosan carboxymethyl cellulose sodium.

[0044] Table 1

[0045] As can be seen from the results in Table 1, after the sample cigarettes were stored in a sealed container for three weeks, the retention of the linear composite gel aroma sustained-release filter prepared in this embodiment was significantly higher than that of the traditional single-bar control, reaching as high as 3.4 times. Compared with the sample tested immediately, after being stored in a sealed container for three weeks, the menthol content of the gel aroma linear sample decreased by about 9.2%, while that of the blank sample decreased by about 74.1%, directly demonstrating the strong sustained-release effect of the filter made of polyethylene glycol and chitosan carboxymethyl cellulose sodium composite.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fragrance-lined composite filter rod, characterized in that, It includes an outer protective layer and a fragrance layer. The outer protective layer and the fragrance layer are connected together by a filter element. The filter element is located inside the outer protective layer. An inner core structure is provided between the outer protective layer and the fragrance layer. The outer protective layer, the fragrance layer and the inner core structure are sealed together to form a hollow chamber. The filter element is located inside the hollow chamber.

2. The method for preparing a fragrance-lined composite filter rod according to claim 1, characterized in that, Includes the following steps; Step 1: Preparation of the mixed solution: Chitosan, sodium carboxymethyl cellulose and modified starch are added to an aqueous solution of sodium citrate, heated and stirred at 60°C for 0.6 hours, and then cooled to obtain the mixed solution; Step 2: Prepare the gel. Heat polyethylene glycol to 30-80°C until it is completely melted. Then, mix the molten polyethylene glycol with the mixed solution at a weight ratio of 1:1 to 10:1 to obtain the gel. Step 3: Add menthol. Add menthol flavoring to the gel and mix evenly to obtain a mixed solution containing menthol. Step 4: Create the flavoring thread. Use an adjustable nozzle to spray a menthol-containing mixed solution onto the inside of the flavoring layer. After it passes through the smoking gun and filter and solidifies, the mixed solution cools and solidifies, forming a menthol-containing flavoring thread in the flavoring layer. Step 5: Store the fragrance thread in a sealed container for three weeks, test the menthol content of the composite gel thread, and obtain the completed fragrance thread composite filter rod.

3. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step one, the modified starch is physically modified starch, chemically modified starch, biologically modified starch, or composite modified starch. The saturated solution is mixed with an aqueous solution of sodium citrate to obtain a mixed solution, wherein the volume ratio of the concentration of the saturated solution to the concentration of the aqueous solution of sodium citrate is 4:

6.

4. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step two, polyethylene glycol with a molecular weight of 5000 is selected. After the polyethylene glycol is completely melted, it is added to the mixed solution. The molten polyethylene glycol and the mixed solution are mixed evenly using a stirrer at a speed of 600 rpm. The mixed solution is then placed in a mold for curing and shaping for 16 hours.

5. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step three, menthol is a colorless needle-like crystal and granular organic compound, and the amount of menthol flavoring substance is 24% of the amount of composite gel.

6. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step four, the adjustable nozzle evenly sprays the menthol-containing mixed solution onto the surface of the filter filament bundle and can adjust the flow rate as required.

7. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step five, the menthol content of mainstream cigarette smoke is detected by combining a smoking machine with GC-MS. Twenty cigarette samples are collected as a group through the Cambridge filter of the smoking machine, and the detection results are obtained by GC-MS analysis using headspace solid phase microextraction technology.

8. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step four, the diameter of the menthol-containing fragrance thread is 2.0 mm.

9. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: In step four, five menthol-containing fragrance lines are placed along the axis of the filter rod in the fragrance layer.

10. The method for preparing a fragrance-lined composite filter rod according to claim 2, characterized in that: The outer protective layer is made of polyethylene, the fragrance layer is a solution carrier, and the filter element is an activated carbon fiber structure.

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