Sweet cigarette tipping paper ink capable of preventing permeation of bead oil

Abstract

The invention relates to the technical field of tobacco packaging materials, solves the problems that traditional cigarette tipping paper ink is easy to permeate when being in contact with bead blasting oil, so that printed patterns are fuzzy and paper is adhered, and discloses sweet cigarette tipping paper ink capable of preventing bead blasting oil permeation. Comprising the following raw materials in percentage by weight: 10-15% of cellulose acetate butyrate, 5-10% of cellulose nitrate, 1-5% of neotame, 1-5% of saccharin sodium salt, 0.5-1.0% of polytetrafluoroethylene wax, 0.5-1% of modified silicon dioxide and 60-70% of absolute ethyl alcohol, the cellulose acetate butyrate and the cellulose nitrate form a film-forming substrate, the neotame and the saccharin sodium salt serve as a compound sweetening agent, and the absolute ethyl alcohol serves as a solvent. And polytetrafluoroethylene wax and modified silicon dioxide are used as synergistic oil-proof penetrating agents. The anti-explosion bead oil has the advantages that the anti-explosion bead oil permeability of a printed matter under the condition that a sweetening agent is added is improved, the ink layer can prevent the anti-explosion bead oil from permeating after the anti-explosion bead arranged in the cigarette holder is broken, and the surface is kept smooth and not sticky.

Description

Technical Field

[0001] This invention relates to the field of tobacco packaging materials technology, specifically to a cigarette tipping paper ink with a sweet-smelling anti-explosion bead oil penetration. Background Technology

[0002] Cigarette tipping paper is a key material connecting the cigarette and the filter tip. The performance of the ink on its surface directly affects the smoking experience and safety of the cigarette. The ink on its surface must simultaneously meet the requirements of preventing the migration of toxic substances and resisting the penetration of oils (such as peppermint oil and triacetin) after the flavor capsule breaks.

[0003] Traditional cigarette tipping paper inks are prone to penetration when in contact with flavoring oils, resulting in blurred printed patterns and paper sticking. In particular, the addition of sweeteners (such as neotame and sodium saccharin) exacerbates the swelling of the ink film due to their hydrophilicity. Although nitrocellulose-based inks in existing technologies dry quickly, they lack sufficient oil resistance. Simply adding wax powder reduces the solubility of sweeteners. Unmodified silica cannot form a stable barrier in the presence of sweeteners, and some sweeteners can easily migrate into the cigarette. Summary of the Invention

[0004] To address the problem that traditional cigarette tipping paper inks are prone to penetration when in contact with popping bead oil, leading to blurred printed patterns and paper sticking, and that adding sweeteners exacerbates ink film swelling, this invention provides a sweet-tasting cigarette tipping paper ink that prevents popping bead oil penetration.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a cigarette tipping paper ink with a sweet taste and anti-explosion properties, comprising the following raw materials in the following weight percentages: cellulose acetate butyrate 10-15%, nitrocellulose 5-10%, neotame 1-5%, sodium saccharin 1-5%, polytetrafluoroethylene wax 0.5-1.0%, modified silica 0.5-1%, and anhydrous ethanol 60-70%; In this film, cellulose acetate butyrate and nitrocellulose constitute the film-forming matrix, neotame and sodium saccharin are used as a composite sweetener, and polytetrafluoroethylene wax and modified silica are used as synergistic oil penetration inhibitors.

[0006] Furthermore, the modified silica is fumed silica with a particle size of 10-20 nm, which has been surface-modified with hexamethyldisilazane.

[0007] Furthermore, the ratio of neotame to sodium saccharin is 1.5:1 to 2:1.

[0008] Furthermore, the polytetrafluoroethylene wax has a melting point of 120–130°C and an average particle size of 5–8 μm.

[0009] Furthermore, it includes the following steps: S1: Dry material dispersion premixing: Cellulose acetate butyrate and nitrocellulose are premixed by dry mixing using a high-speed mixer. Based on the compatibility of the two celluloses, a uniform base is formed. Polytetrafluoroethylene wax and modified silica are added, and stirring is continued. The ultrafine powder of polytetrafluoroethylene wax and silica are uniformly dispersed. S2: Sweetener is dissolved in steps. First, add sodium saccharin and dissolve it by sonication. Then add neotame and heat it to a certain temperature. After sonication, extend the time and dissolve it a second time. After dissolving, let it stand and take the supernatant to test the concentration of sweetener to ensure complete dissolution. S3: Composite Mixing: The sweetener solution prepared in S2 is slowly added to the premix in S1 while stirring at low speed to avoid excessive local concentration. The temperature is increased and the stirring speed is increased to disperse at high speed. After mixing, the viscosity of the system is measured to obtain a homogeneous dispersion. S4: Post-processing: Cool the homogeneous dispersion obtained in step S3 to room temperature, filter it through a 200-mesh sieve, transfer it to a defoaming tank, introduce nitrogen gas and stir to defoam, take samples to test the uniformity of sweetener (HPLC) and penetration performance (bursting bead oil penetration test), and package it after passing the test.

[0010] The advantages of this invention are: the synergistic effect of polytetrafluoroethylene wax and modified silica, the low surface energy of the wax resists grease, and the modified silica forms a dense barrier, effectively improving the anti-bursting performance of printed materials in the presence of added sweeteners. The ink layer can prevent the penetration of the bursting beads after they break in the cigarette holder, keeping the surface smooth and non-sticky. Moreover, the solvent is mainly ethanol, which is more environmentally friendly than inks that use general esters or other solvents. By optimizing the formulation, compound sweeteners retain their sweetness while reducing the total amount used by utilizing the high sweetness of neotame, thus minimizing the impact of the sweetener's hydrophilicity on membrane swelling. Nitrocellulose retains its fast-drying properties, while cellulose acetate butyrate enhances the film's flexibility and oil resistance through its long-chain ester structure. The combination of the two solves the problem of traditional nitrocellulose-based inks being "fast-drying but lacking in oil resistance," thus improving the overall performance of the film. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the formula functional architecture of the present invention.

[0012] Figure 2 This is a schematic diagram of the preparation process of the present invention. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Combined with appendix Figure 1 , Figure 2A sweet-tasting, anti-explosion bead ink for cigarette tipping paper comprises the following raw materials in the following weight percentages: cellulose acetate butyrate 10-15%, nitrocellulose 5-10%, neotame 1-5%, sodium saccharin 1-5%, polytetrafluoroethylene wax 0.5-1.0%, modified silica 0.5-1%, and anhydrous ethanol 60-70%. In this film, cellulose acetate butyrate and nitrocellulose constitute the film-forming matrix, neotame and sodium saccharin are used as a composite sweetener, and polytetrafluoroethylene wax and modified silica are used as synergistic oil penetration inhibitors.

[0015] Examples 1-3 Raw material ratio (by weight): Components Example 1 Example 2 Example 3 Cellulose acetate butyrate 12% 10% 15% Nitrocellulose 7% 5% 10% Newtilla chinensis 3% 1% 5% Sodium saccharin 2% 1% 3% Polytetrafluoroethylene wax 0.8% 0.5% 1.0% Modified silica 0.7% 0.5% 1% Anhydrous ethanol margin margin margin Note: The modified silica is fumed silica with an average particle size of 15 nm that has been surface modified with hexamethyldisilazane; the ratio of neotame to sodium saccharin is 1.5:1 (Example 1), 1:1 (Example 2), and 1.67:1 (Example 3).

[0016] Examples 1-3 all adopted the following preparation steps: S1: Dry material dispersion premix Cellulose acetate butyrate and nitrocellulose are put into a high-speed mixer. The mixer speed is set in the range of 1000-1200 r / min. Dry mix for 10-15 min until a uniform base is formed. Add polytetrafluoroethylene wax (average particle size 6μm) and modified silica, and continue stirring for more than 20 minutes (maintaining a speed of more than 1500 r / min) to obtain a powder premix.

[0017] S2: Sweetener dissolves in steps Add sodium saccharin to anhydrous ethanol, use a stirrer to help dissolve the sodium saccharin, and after dissolution, sonicate in an ultrasonic reactor (40kHz, 300W) for more than 15 minutes until completely dissolved. Add neotame, heat to 45°C, and continue sonicating for 25 minutes; After standing for 30 minutes, take the supernatant and check the sweetener solubility by HPLC. If it is ≥99%, proceed to the next step.

[0018] S3: Composite Mixture The sweetener solution obtained in S2 was slowly added dropwise to the premix in S1 (dropping rate 5 mL / min), while stirring at a low speed simultaneously, with the stirring speed set to 200 r / min. Heat to 50℃ and disperse at high speed (5000r / min) for 30min. Measure the viscosity of the system using a rotational viscometer.

[0019] It should be noted that small-dose preparations can be made using micro-equipment (such as a 0.5L mixing tank), but industrial production requires scaling up the equipment volume proportionally and verifying the consistency of the shear rate (Reynolds number Re≥10). 4 ).

[0020] S4: Post-processing Cooled to 25°C, filtered through a 200-mesh stainless steel screen in a vacuum filtration system; The filtrate was transferred to a defoaming tank, nitrogen gas was introduced (flow rate 2L / min), and the mixture was stirred (300r / min) for 1 hour; Sampling and testing: Sweetener uniformity: The concentration deviation of neotame / saccharin sodium was measured at 5 different points by HPLC. Permeability: The permeability tester was used to test the permeability of the popping bead oil (menthol / triacetin = 1:1) and the permeation amount was measured over 24 hours.

[0021] Process parameters Example 1 Example 2 Example 3 Mixed viscosity in S3 350 mPa·s 290 mPa·s 410 mPa·s Sweetener solubility ≥99.5% ≥99.2% ≥99.7% Performance Results Bursting bead oil penetration (24h) 0.75μg / cm² 1.20 μg / cm² 0.58 μg / cm² Ink shedding rate 0.2% 0.5% 0.1% Sweetness persistence Stable throughout The first two-thirds are stable Enhanced sweetness throughout Sweetener migration <0.1ppm <0.1ppm 0.3ppm Film porosity 0.35% 0.52% 0.28% All examples met the core requirements (penetration <1.5μg / cm², shedding rate <1%, migration <0.5ppm). Example 3 had the lowest penetration, which was 52% lower than Example 2. The increased neotame content significantly prolonged the sweetness (sweetness throughout Example 3). However, excessive neotame caused the migration to approach the safety threshold. In Example 2, the viscosity decreased when the cellulose acetate butyrate content was <12%, which affected printability. In summary, Example 1 was the optimal solution.

[0022] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sweet-smelling, anti-explosive oil penetration ink for cigarette tipping paper, characterized in that: The raw materials include the following weight percentages: cellulose acetate butyrate 10-15%, nitrocellulose 5-10%, neotame 1-5%, sodium saccharin 1-5%, polytetrafluoroethylene wax 0.5-1.0%, modified silica 0.5-1%, and anhydrous ethanol 60-70%. In this film, cellulose acetate butyrate and nitrocellulose constitute the film-forming matrix, neotame and sodium saccharin are used as a composite sweetener, and polytetrafluoroethylene wax and modified silica are used as synergistic oil penetration inhibitors.

2. The cigarette tipping paper ink with a sweet-smelling anti-explosion bead ink penetration according to claim 1, characterized in that: The modified silica is fumed silica with a particle size of 10-20 nm, which has been surface-modified with hexamethyldisilazane.

3. The cigarette tipping paper ink with a sweet-smelling anti-explosion bead ink penetration according to claim 1, characterized in that: The polytetrafluoroethylene wax has a melting point of 120–130°C and an average particle size of 5–8 μm.

4. A method for preparing a cigarette tipping paper ink with a sweet-smelling anti-explosion bead oil penetration according to any one of claims 1-3, characterized in that, Includes the following steps: S1: Dry material dispersion premixing: Cellulose acetate butyrate and nitrocellulose are premixed by dry mixing using a high-speed mixer. Based on the compatibility of the two celluloses, a uniform base is formed. Polytetrafluoroethylene wax and modified silica are added, and stirring is continued. The ultrafine powder of polytetrafluoroethylene wax and silica are uniformly dispersed. S2: Sweetener is dissolved in steps. First, add sodium saccharin and dissolve it by sonication. Then add neotame and heat it to a certain temperature. After sonication, extend the time and dissolve it a second time. After dissolving, let it stand and take the supernatant to test the concentration of sweetener to ensure complete dissolution. S3: Composite Mixing: The sweetener solution prepared in S2 is slowly added to the premix in S1 while stirring at low speed to avoid excessive local concentration. The temperature is increased and the stirring speed is increased to disperse at high speed. After mixing, the viscosity of the system is measured to obtain a homogeneous dispersion. S4: Post-processing: Cool the homogeneous dispersion obtained in step S3 to room temperature, filter it through a 200-mesh sieve, transfer it to a defoaming tank, introduce nitrogen gas and stir to defoam, take samples to test the uniformity of sweetener (HPLC) and penetration performance (bursting bead oil penetration test), and package it after passing the test.

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