A two-component composite sweet ink and preparation method thereof

Abstract

The present invention relates to the field of printing ink, and in particular to a two-component composite sweet ink and a preparation method thereof. The two-component composite sweet ink comprises, by weight, component A: 2 to 10 parts of acrylic emulsion, 50 to 100 parts of solvent, and 3 to 15 parts of sweetener; and component B: 5 to 20 parts of resin matrix, 2 to 5 parts of modified resin, 0.5 to 2 parts of plasticizer, 0.1 to 5 parts of auxiliary agent, and 50 to 90 parts of solvent. The sweet ink provided by the present invention can significantly improve the gradient feeling of the sweetness of the ink itself while maintaining a good ink printing effect, and can effectively preserve the sweetness, so that the ink can retain its own sweetness to the greatest extent during the long-term printing storage period, and inhibit the attenuation of the sweetness.

Description

Technical Field

[0001] The invention relates to the field of printing ink, in particular to a two-component composite sweet ink and a preparation method thereof. Background Art

[0002] As an important auxiliary material for rolled cigarettes, tipping paper is in direct contact with the human oral cavity, and its functionality and safety are also highly valued by consumers. Therefore, the research and development of the safety and functionality of tipping paper has become a topic that companies pay more and more attention to.

[0003] As for the functionality of tipping paper, the research and development of its sweetness is also an important research direction. When tipping paper is sweetened, it suppresses the unpleasant tastes such as bitterness, spiciness, and astringency during smoking, improves the taste and comfort of cigarettes, and enables consumers to have a good user experience. However, the sweetness of tipping paper currently mainly comes from the sweetener printed on the tipping paper. This method will make it impossible to retain the sweetness on the tipping paper for a long time. As the smoking time or storage time increases, the sweetness will gradually fade or disappear.

[0004] Prior art: Chinese patent CN106280705A provides an edible printing ink, which uses wax-based fat ink as the ink matrix and adds auxiliary additives such as sweeteners. It claims to prepare an edible ink with high conductivity and low viscosity, but it does not solve the problem of dissipation and loss of the sweetness of the ink mentioned above.

[0005] Therefore, in order to solve the above problems, the present application provides a two-component composite sweet ink and a preparation method thereof. The sweetness of the prepared ink is adjustable and has a long-term sweetness retention effect. Summary of the invention

[0006] In order to solve the above problems, the first aspect of the present invention provides a two-component composite sweet ink, which includes, by mass, component A: 2 to 10 parts of acrylic emulsion, 50 to 100 parts of solvent, and 3 to 15 parts of sweetener; and component B: 5 to 20 parts of resin matrix, 2 to 5 parts of modified resin, 0.5 to 2 parts of plasticizer, 0.1 to 5 parts of additive, and 50 to 90 parts of solvent.

[0007] As a preferred solution, the mass ratio of component A to component B is 1-10:1-10.

[0008] As a preferred solution, the mass ratio of component A to component B is 1-5:1-5.

[0009] As a preferred solution, the mass ratio of component A to component B is 1.5-2:2-4.

[0010] As a preferred solution, the mass ratio of component A to component B is 1.5:4.

[0011] As a preferred solution, the acrylic emulsion is a styrene / acrylic polymer emulsion.

[0012] As a preferred solution, the acrylic emulsion is 2800 type styrene / acrylic polymer emulsion purchased from Guangzhou Junhua Company.

[0013] In the present invention, the acrylic emulsion has a solid content of 25-35%, a density of 1.04 at 25°C, a pH of 7.5-8.5, a viscosity of less than 100 CPS, and a glass transition temperature of 17°C.

[0014] As a preferred solution, the solvent is at least one of a fat-soluble solvent and deionized water.

[0015] As a preferred solution, the solvent in component A is a mixture of ethanol and deionized water.

[0016] As a preferred solution, the mass ratio of ethanol to deionized water in the component A is 1-2:6-7.

[0017] As a preferred solution, the solvent in component B is ethanol.

[0018] As a preferred embodiment, the sweetener is at least one of Taline sugar, Advantame, aspartame, xylitol, neotame, saccharin sodium, glucose, fructose, brown sugar and lactose.

[0019] As a preferred solution, the sweetener is a mixture of Taline sugar, Advantame, Neotame and saccharin sodium.

[0020] As a preferred solution, the mass ratio of Taline sugar, Advantame, Neotame and saccharin sodium is 5-8:1-2:1-2:3-5.

[0021] As a preferred solution, the mass ratio of Taline sugar, Advantame, Neotame and saccharin sodium is 6:1:1.5:4.

[0022] As a preferred solution, the resin matrix is ​​polyvinyl butyral.

[0023] As a preferred solution, the average molecular weight of the resin matrix is ​​1500-200000.

[0024] As a preferred solution, the average molecular weight of the resin matrix is ​​15,000 to 25,000.

[0025] In the present invention, by using polyvinyl butyral selected under a specific molecular weight, the sweetness retention of the ink can be effectively improved, the loss of sweetness during long-term storage can be avoided, and the uniform stability of the ink system can be further improved. The applicant believes that when polyvinyl butyral with a specific molecular weight is used as the resin matrix of component B, it can not only effectively cooperate with the acrylic emulsion selected in the present invention to form a cross-stable network entanglement system to improve the ink itself and printing stability, but also form a good molecular migration resistance in the system, so that the sweetener molecules can be effectively suppressed from continuously migrating outward and dispersing during storage or use, thereby greatly suppressing the attenuation of sweetness. When the average molecular weight of polyvinyl butyral is less than 15,000, the particle size of polyvinyl butyral that is too small weakens the adhesion of the ink on the tipping paper, thereby weakening the fixing effect of the ink as a whole on the sweetener, and when the average molecular weight is greater than 25,000, the excessive molecular weight will inhibit the fluidity of the ink itself, thereby affecting the printing effect of the ink, and similarly cannot achieve good ink performance.

[0026] As a preferred solution, the modified resin is a modified rosin resin; the modified rosin resin is at least one of hydrogenated rosin, disproportionated rosin, and polymerized rosin.

[0027] As a preferred solution, the modified rosin resin is unsaturated hydrogenated rosin.

[0028] In the present invention, the various properties of the ink can be further improved by selecting unsaturated hydrogenated rosin, and the sweetness of the ink can be retained. The applicant believes that the corresponding double bonds in the unsaturated hydrogenated rosin can play a good cross-linking role in the ink and play a partial chain extension effect, thereby improving the compactness between the ink molecules, and then inhibiting the molecular migration rate of the sweetener molecules in the ink system.

[0029] On the other hand, the applicant has found that although the polyvinyl butyral with a specific molecular weight used in the present application can effectively improve the retention of sweetness, the corresponding adhesion viscosity and adhesion durability to the tipping paper will decrease to varying degrees. The addition of rosin resin can effectively avoid this phenomenon, thereby retaining excellent printing performance while ensuring good sweetness retention.

[0030] As a preferred solution, the plasticizer is acetyl tributyl citrate.

[0031] As a preferred solution, the auxiliary agent is at least one of a thickener, an anti-wear agent, an anti-scratch agent, a waterproofing agent, a preservative, a flame retardant, and an antioxidant.

[0032] As a preferred solution, the auxiliary agent is an anti-wear agent and an anti-scratch agent.

[0033] As a preferred solution, the wear-resistant agent is polyethylene wax.

[0034] As a preferred solution, the anti-scratch agent is polydimethylsiloxane.

[0035] The second aspect of the present invention provides a method for preparing the above-mentioned two-component composite sweet ink, which comprises the following steps: (1) adding the acrylic emulsion and solvent in component A to a mixing tank and stirring for 5 to 10 minutes, then adding the sweetener and stirring for 10 to 30 minutes until it is completely dissolved, and setting aside; (2) adding the resin matrix, modified resin and solvent in component B to a reactor, stirring at 500 to 800 r / min for 5 to 15 minutes, heating to 60 to 70°C and stirring and dissolving for 100 to 200 minutes; (3) after the temperature in the reactor drops to 20 to 30°C, adding the above-mentioned emulsion to a high-speed disperser, stirring at a speed of 1000 to 1500 r / min, and adding the remaining component B raw materials in turn, dispersing for 30 to 60 minutes, and setting aside; (4) mixing and stirring component A and component B in proportion to obtain the product.

[0036] Beneficial effects:

[0037] 1. The sweet ink provided by the present invention has the advantages of adjustable sweetness, good sweetness gradient, high sweetness storage and not easy to decay. It is very suitable for use with kraft paper and applied to the cigarette industry, and can effectively avoid the problem of poor sweetness and fast sweetness decay of kraft paper in the existing industry.

[0038] 2. The sweet ink provided by the present invention can significantly improve the gradient feeling of the sweetness of the ink itself while maintaining a good ink printing effect, and can effectively preserve the sweetness, so that the ink can retain its own sweetness to the greatest extent during the long-term printing storage period, and inhibit the attenuation of the sweetness.

[0039] 3. The sweet ink provided by the present invention can effectively improve the sweetness retention of the ink by adopting polyvinyl butyral with a specific molecular weight selection, and avoid the loss of sweetness during long-term storage. When the average molecular weight of polyvinyl butyral is 15,000 to 25,000, it can form a good molecular migration resistance in the system, thereby effectively inhibiting the continuous outward migration and dispersion of sweetener molecules during storage and use, thereby greatly inhibiting the attenuation of sweetness.

[0040] 4. The sweet ink provided by the present invention can further improve various properties of the ink and retain the sweetness of the ink by selecting unsaturated hydrogenated rosin. The double bonds of the unsaturated hydrogenated rosin can play a good cross-linking role in the ink and play a partial chain extension effect, thereby improving the compactness between the ink molecules and inhibiting the molecular migration rate of the sweetener molecules in the ink system.

[0041] 5. The sweet ink provided by the present invention adopts a compound of polyvinyl butyral and modified rosin, which can effectively avoid the phenomenon that the adhesion viscosity and adhesion durability of the ink to the tipping paper will decrease to varying degrees, thereby retaining good ink printing performance while maintaining good sweetness. DETAILED DESCRIPTION

[0042] Example 1

[0043] Example 1 The first aspect provides a two-component composite sweet ink, including component A, calculated by mass: 6 parts of acrylic emulsion, 75 parts of solvent, and 12.5 parts of sweetener; including component B, calculated by mass: 15 parts of resin matrix, 3 parts of modified resin, 1 part of plasticizer, 0.7 parts of additive, and 60 parts of solvent.

[0044] The mass ratio of component A to component B is 1.5:4.

[0045] The acrylic emulsion is 2800 type styrene / acrylic polymer emulsion, purchased from Guangzhou Junhua Company.

[0046] The solid content of acrylic emulsion is 30%, the density is 1.04 at 25°C, the pH is 8, the viscosity is <100 CPS, and the glass transition temperature is 17°C.

[0047] The solvent in component A is a mixture of ethanol and deionized water, with a mass ratio of 10:6.5.

[0048] The solvent in component B is ethanol.

[0049] The sweetener is a mixture of Taline sugar, Advantame, Neotame and saccharin sodium, with a mass ratio of 6:1:1.5:4.

[0050] The resin matrix is ​​polyvinyl butyral with an average molecular weight of 18,000, which is purchased from an industrial-grade polyvinyl butyral product of the corresponding molecular weight sold by Jining Sanshi Biotechnology Co., Ltd.

[0051] The modified resin is an unsaturated hydrogenated rosin resin, which is purchased from the hydrogenated rosin resin product sold by Mitsui Chemicals (Shandong) Co., Ltd.

[0052] The plasticizer is acetyl tributyl citrate; the additives are wear-resistant agents and anti-scratch agents. The wear-resistant agent is German DA806 polyethylene wax (0.4 parts), purchased from Wengkaier (Shanghai) International Trading Co., Ltd.; the anti-scratch agent is Dow Corning poly DC51 dimethylsiloxane (0.3 parts), purchased from Nanjing Lidong Chemical Co., Ltd.

[0053] The second aspect of this embodiment provides a method for preparing the above-mentioned ink, which comprises the following steps: (1) adding the acrylic emulsion and solvent in component A to a mixing tank and stirring for 6 minutes, then adding a sweetener and stirring for 15 minutes until completely dissolved, and setting aside; (2) adding the resin matrix, modified resin and solvent in component B to a reactor, stirring at 600 r / min for 10 minutes, heating to 65°C and stirring and dissolving for 120 minutes; (3) after the temperature in the reactor drops to 30°C, adding the above-mentioned emulsion to a high-speed disperser, stirring at a speed of 1200 r / min, and adding the remaining component B raw materials in turn, dispersing for 40 minutes, and setting aside; (4) mixing component A and component B in proportion and stirring to obtain.

[0054] Example 2

[0055] The specific implementation of this embodiment is the same as that of Embodiment 1, except that the mass ratio of component A to component B is 2:3.

[0056] Comparative Example 1

[0057] The specific implementation method of this comparative example is the same as that of Example 1, except that: the average molecular weight of polyvinyl butyral is 8000, and the industrial grade polyvinyl butyral product with the corresponding molecular weight is purchased from Jining Sanshi Biotechnology Co., Ltd.

[0058] Comparative Example 2

[0059] The specific implementation of this comparative example is the same as that of Example 1, except that the modified rosin resin is disproportionated rosin, which is an industrial-grade disproportionated rosin resin purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd.

[0060] Comparative Example 3

[0061] The specific implementation of this comparative example is the same as that of Example 1, except that: acrylic emulsion MT-2600 Guangzhou Junhua, solid content 45%, density (25°C) 1.04, PH8.3, viscosity 4000CPS, glass transition temperature (Tg) 70°C.

[0062] Performance Evaluation

[0063] Sweetness: A tiered combination test of front sweetness, middle sweetness and back sweetness was conducted by a 10-member sweetness evaluation team, who conducted a sensory test on the printed samples and obtained the results through comprehensive evaluation. The measured results are recorded in Table 1.

[0064] Ink storage: The inks prepared in the examples and comparative examples were tested for storage properties. They were stored in a constant temperature and humidity box at 40°C for 6 months. The inks were then taken out for a residual mass test and the percentage of mass reduction was calculated. The average of 10 measured results was recorded in Table 1.

[0065] Table 1

[0066]

[0067]

Claims

1. A two-component composite sweet ink, Features: In parts by mass, it comprises component A: 2 to 10 parts of acrylic emulsion, 50 to 100 parts of solvent, and 3 to 15 parts of sweetener; The invention comprises component B: 5-20 parts of resin matrix, 2-5 parts of modified resin, 0.5-2 parts of plasticizer, 0.1-5 parts of auxiliary agent and 50-90 parts of solvent; the acrylic emulsion is styrene / acrylic polymer emulsion; the resin matrix is ​​polyvinyl butyral; the average molecular weight of the resin matrix is ​​15000-25000; the modified resin is modified rosin resin, and the modified rosin resin is unsaturated hydrogenated rosin; the mass ratio of component A to component B is 1-10:1-10; the sweetener is at least one of taline sugar, advantame, aspartame, xylitol, neotame, saccharin sodium, fructose, brown sugar and lactose.

2. The two-component composite sweet ink according to claim 1, Features: The solvent is at least one of a fat-soluble solvent and deionized water.

3. The two-component composite sweet ink according to claim 2, Features: The auxiliary agent is at least one of a thickener, an anti-wear agent, an anti-scratch agent, a waterproof agent, a preservative, a flame retardant, and an antioxidant.

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