Cigarette tipping paper gloss oil capable of preventing cigarette adhesion and preparation method of cigarette tipping paper gloss oil

Abstract

The invention provides cigarette tipping paper gloss oil for preventing cigarette adhesion. The cigarette tipping paper gloss oil is prepared from the following raw materials in parts by weight: 10-40 parts of resin; 60 to 90 parts by weight of a solvent; 0.2 to 2 parts by weight of a lubricant; and 0.1 to 1 part by weight of an auxiliary agent. Compared with the prior art, the cigarette tipping paper gloss oil for preventing cigarette adhesion adopts components with specific content, realizes better integral interaction, is applied to the last procedure of tipping paper printing, and is positioned on the outermost layer of a tipping paper finished product; the prepared tipping paper roll does not have any cigarette adhesion phenomenon in a continuous high-temperature environment of 75 DEG C for 48 hours, so that the quality problem of cigarette adhesion is thoroughly solved.

Description

Technical Field

[0001] The invention relates to the technical field of preparing cigarette tipping paper by gravure printing, and more specifically to a cigarette tipping paper varnish for preventing cigarette sticks from sticking and a preparation method thereof. Background Art

[0002] Cigarette tipping paper, also known as tipping paper, is an important and indispensable packaging material for the production of filter-tipped cigarettes. It is the outermost wrapping paper that wraps the cigarette tip rod and plays the role of connecting the cigarette tip rod and the tobacco part. Cigarette tipping paper ink mainly includes colorant, resin and solvent. According to the solvent of the ink, it can be divided into fat-soluble, alcohol-soluble and water-based ink.

[0003] Since the ink on the tipping paper is on the outermost layer of the paper and is in direct contact with the human mouth, in addition to high requirements for the safety of the ink itself, the degree of appearance beautification often seriously affects the competitiveness of the product. Whether the cigarette is sticky is one of the important indicators in the appearance requirements.

[0004] Finished cigarettes have a long shelf life and often encounter high-temperature environmental conditions during transportation, storage and sales. High temperatures cause changes in the composition of cigarette materials, resulting in dissolution, phase change and sublimation, especially ink components. Under high temperature conditions, ink components, especially resin components, are prone to dissolution and melting. When the temperature drops, the resin solidifies and the inks on adjacent cigarettes stick together, seriously affecting the quality of the finished cigarettes.

[0005] To solve the above problems, technicians in this field have made various attempts. For example, the Chinese patent with application number 201910658926.2 discloses an anti-falling and anti-adhesion varnish for aluminum-plated plugging paper and its preparation method. The raw materials used are calculated by weight as follows: 30-70 parts of aqueous film-forming resin, 5-20 parts of aqueous non-film-forming resin, 1-10 parts of high-temperature resistant resin, 1-10 parts of aqueous high-density polyethylene wax emulsion, 0.1-1 parts of aqueous adhesion promoter, 0.1-0.5 parts of aqueous defoamer, 15-50 parts of pure water, and an appropriate amount of pH adjuster. It not only contains an adhesion promoter, but also adds a temperature-resistant component, so as to ensure that a high-gloss transparent coating with firm adhesion, stable size, and high temperature resistance is obtained, which solves the quality defects of the aluminum-plated plugging paper varnish coating, such as weak adhesion and easy falling off, large coefficient of variation of laser drilling, and adhesion. This patent solves the problem of anti-sticking of water-soluble varnish on aluminized tipping paper, and has certain application value in solving the sticking problem of the tipping paper product itself; however, in actual application, it cannot completely solve the sticking problem of commercially available cigarettes.

[0006] For another example, Chinese patent with publication number CN113773703A discloses an anti-sticking varnish for cigarette tipping paper, and its preparation method and application. The fat-soluble varnish with modified nitrocellulose with a higher glass transition temperature as a connecting material can improve the anti-sticking performance of cigarette tipping paper, and can effectively prevent the adhesion of cigarette tipping paper during cigarette rolling and storage, thereby improving the production efficiency and product quality of cigarettes; the main function of the wax powder is to smooth and deluster, which can improve flowability, obtain a smooth surface, and increase the scratch resistance of the varnish. The core technology of this patent is to increase the glass transition temperature of the ink resin, hoping to prevent the adhesion of the cigarette tipping paper during the cigarette rolling and storage process by reducing the resin phase change; however, the glass transition temperature of the resins commonly used in tipping paper, such as nitrocellulose, acrylic resin, cellulose acetate, etc., is generally greater than 100°C, and the worst environmental temperature we can encounter is only 70°C at most (under the car windshield at noon in summer), and this environmental temperature usually does not last more than 2 hours. In this environment, the ink resin will not be vitrified. However, in actual use, the use of nitrocellulose resin (glass transition temperature greater than 160°C, such as Figure 1 The cigarettes wrapped with the tipping paper prepared by the method shown in FIG. 1 still have serious stickiness under the test conditions (55°C, 24 hours) (as shown in FIG. Figure 2 As shown in FIG. 1 , since the glass transition temperature of this resin is already very high (190° C.), cigarettes wrapped with tipping paper made from it still stick, indicating that the glass transition temperature is not the main cause of sticking. Therefore, this patent cannot completely solve the sticking problem of commercially available cigarettes. Summary of the invention

[0007] In view of this, the object of the present invention is to provide a cigarette tipping paper varnish for preventing cigarette sticks from sticking and a preparation method thereof, which can completely solve the quality problem of cigarette sticking.

[0008] The present invention provides a tipping paper varnish for cigarettes for preventing cigarettes from sticking, which is prepared from raw materials including the following components:

[0009] 10 to 40 parts by weight of resin;

[0010] 60 to 90 parts by weight of solvent;

[0011] 0.2 to 2 parts by weight of lubricant;

[0012] The additive is 0.1 to 1 part by weight.

[0013] Preferably, the resin is selected from one or more of cellulose acetate butyrate, polyurethane, epoxy resin and acrylic resin.

[0014] Preferably, the solvent is selected from one or more of ethanol, ethyl acetate, n-propyl acetate, styrene and methyl methacrylate.

[0015] Preferably, the lubricant is selected from dimethyl silicone oil and / or wax powder.

[0016] Preferably, the auxiliary agent is selected from one or more of a defoamer, a leveling agent and an emulsifier.

[0017] Preferably, the defoamer is selected from polydimethylsiloxane and / or polyether modified silicone oil; the leveling agent is selected from propylene glycol monoethyl ether and / or propylene glycol monobutyl ether; and the emulsifier is selected from Tween and / or OP.

[0018] The present invention also provides a method for preparing the tipping paper varnish for preventing cigarette sticks from sticking as described in the above technical solution, comprising the following steps:

[0019] a) mixing the solvent and the lubricant for the first time to obtain a lubricating liquid;

[0020] b) mixing the remaining solvent with the resin and the additive for a second time to obtain a base varnish;

[0021] c) adding the lubricating oil obtained in step a) into the base varnish obtained in step b) to disperse the lubricating oil to obtain a tipping paper varnish for preventing cigarette sticks from sticking;

[0022] There is no restriction on the order of step a) and step b).

[0023] Preferably, the stirring speed of the first mixing in step a) is 500 r / min to 1000 r / min, and the time is 10 min to 60 min.

[0024] Preferably, the stirring speed of the second mixing in step b) is 1000 r / min to 1500 r / min, and the time is 60 min to 120 min.

[0025] Preferably, the stirring speed of the dispersion in step c) is 500 r / min to 1000 r / min, and the time is 30 min to 60 min.

[0026] The present invention provides a tipping paper varnish for preventing cigarette sticks from sticking, which is prepared from raw materials including the following components: 10 to 40 parts by weight of resin; 60 to 90 parts by weight of solvent; 0.2 to 2 parts by weight of lubricant; 0.1 to 1 part by weight of auxiliary agent. Compared with the prior art, the tipping paper varnish for preventing cigarette sticks from sticking provided by the present invention adopts specific content components to achieve better overall interaction, and is applied to the last process of tipping paper printing. After being the outermost layer of the tipping paper finished product, the cigarettes in the prepared tipping paper bundle will still not have any cigarette sticking phenomenon under a continuous high temperature environment of 75°C for 48 hours, thereby completely solving the quality problem of cigarette sticking.

[0027] In addition, the preparation method provided by the present invention has simple process, mild and easy-to-control conditions, and readily available raw materials with low cost, and has broad application prospects in the field of gravure printing for preparing cigarette tipping paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the differential thermal analysis spectrum of nitrocellulose (nitrogen protection);

[0029] Figure 2 Cigarettes made from tipping paper made from resin with a high glass transition temperature showed stickiness under experimental conditions. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention provides a tipping paper varnish for cigarettes for preventing cigarettes from sticking, which is prepared from raw materials including the following components:

[0032] 10 to 40 parts by weight of resin;

[0033] 60 to 90 parts by weight of solvent;

[0034] 0.2 to 2 parts by weight of lubricant;

[0035] The amount of auxiliary agent is 0.1 to 1 part by weight.

[0036] In order to completely solve the quality problem of sticking of cigarettes, the present invention first carried out a traceability technology study. The above-mentioned resin glass transition temperature is one of the traceability. The conclusion is that simply increasing the glass transition temperature of the resin cannot completely solve the sticking problem of commercially available cigarettes. The present invention found that under high temperature, some additives of the filter tip will volatilize, and a higher solvent environment will be formed in the cigarette box. The solvent has a certain dissolving effect on the ink of the butt paper. After the temperature drops, the dissolved resin solidifies again, causing adjacent cigarettes to stick together. The additives of the cigarette filter tip usually include plasticizers, a small amount of flavor ingredients or some tar-reducing and harm-reducing ingredients. In actual testing, the present invention found that this is the main reason for the sticking of commercially available cigarettes. On this basis, the present invention provides a cigarette tipping paper varnish for preventing cigarette sticks from sticking, which is prepared from raw materials including resin, solvent, lubricant and auxiliary agent, preferably prepared from resin, solvent, lubricant and auxiliary agent.

[0037] In the present invention, the resin is preferably selected from one or more of cellulose acetate butyrate, polyurethane, epoxy resin and acrylic resin, and more preferably one or more of cellulose acetate butyrate, polyurethane and acrylic resin. The present invention has no particular limitation on the source of the resin, and commercially available products well known to those skilled in the art can be used.

[0038] In the present invention, the cigarette tipping paper varnish for preventing cigarette sticks from sticking comprises 10 to 40 parts by weight of resin, preferably 10 to 39 parts by weight.

[0039] In the present invention, the solvent is preferably selected from one or more of ethanol, ethyl acetate, n-propyl acetate, styrene and methyl methacrylate, and more preferably one or more of ethanol, ethyl acetate and n-propyl acetate. The present invention has no particular limitation on the source of the solvent, and commercially available products well known to those skilled in the art can be used.

[0040] In the present invention, the cigarette tipping paper varnish for preventing cigarette sticks from sticking comprises 60 to 90 parts by weight of a solvent, preferably 72 to 90 parts by weight.

[0041] In the present invention, the lubricant is preferably selected from dimethyl silicone oil and / or wax powder, more preferably dimethyl silicone oil or wax powder. The present invention has no particular limitation on the source of the lubricant, and commercial products known to those skilled in the art can be used.

[0042] In the present invention, the cigarette tipping paper varnish for preventing cigarette sticks from sticking comprises 0.2 to 2 parts by weight of a lubricant.

[0043] In the present invention, the auxiliary agent is preferably selected from one or more of a defoamer, a leveling agent and an emulsifier, more preferably a leveling agent and an emulsifier. In the present invention, the defoamer is preferably selected from polydimethylsiloxane and / or polyether-modified silicone oil; the leveling agent is preferably selected from propylene glycol monoethyl ether and / or propylene glycol monobutyl ether, more preferably propylene glycol monoethyl ether or propylene glycol monobutyl ether; the emulsifier is preferably selected from Tween and / or OP, more preferably Tween 80 or OP-10. The present invention has no special restrictions on the source of the auxiliary agent, and commercially available products known to those skilled in the art can be used.

[0044] In the present invention, the cigarette tipping paper varnish for preventing cigarette sticks from sticking comprises 0.1 to 1 parts by weight of an auxiliary agent, preferably 0.5 to 1 parts by weight.

[0045] The cigarette tipping paper varnish for preventing cigarette sticking provided by the present invention adopts a specific content component to achieve a good overall interaction, and is mainly used for gravure printing tipping paper. The ink amount of the cigarette tipping paper varnish for preventing cigarette sticking should be less than 3g / m 2 , and is mainly used in the last process of printing tipping paper, and is in the outermost layer of the finished tipping paper product; the cigarettes in the prepared tipping paper rolls will not have any cigarette sticking phenomenon under a continuous high temperature environment of 75°C for 48 hours, thus completely solving the quality problem of cigarette sticking.

[0046] The present invention also provides a method for preparing the tipping paper varnish for preventing cigarette sticks from sticking as described in the above technical solution, comprising the following steps:

[0047] a) mixing the solvent and the lubricant for the first time to obtain a lubricating liquid;

[0048] b) mixing the remaining solvent with the resin and the additive for a second time to obtain a base varnish;

[0049] c) adding the lubricating oil obtained in step a) into the base varnish obtained in step b) to disperse the lubricating oil to obtain a tipping paper varnish for preventing cigarette sticks from sticking;

[0050] There is no restriction on the order of step a) and step b).

[0051] The present invention firstly mixes the solvent and the lubricant for the first time to obtain a lubricating liquid, preferably, specifically, a proper amount of solvent is added into a container, and then the lubricant is added into the container, stirred evenly, and fully dissolved and dispersed to obtain the lubricating liquid; and the remaining solvent is mixed with the resin and the additives for the second time to obtain a base varnish, preferably, specifically, the remaining solvent is added into another container, and then the resin and other additives are added into the container, stirred evenly, and fully dissolved and dispersed to obtain the base varnish.

[0052] In the present invention, the solvent, lubricant, resin and additive are the same as those in the above technical solution and will not be described in detail here.

[0053] In the present invention, the stirring speed of the first mixing is preferably 500 r / min to 1000 r / min, and the time is preferably 10 min to 60 min.

[0054] In the present invention, the stirring speed of the second mixing is preferably 1000 r / min to 1500 r / min, and the time is preferably 60 min to 120 min.

[0055] Finally, the present invention adds the obtained lubricating oil to the obtained base varnish to disperse the obtained lubricating oil to obtain the cigarette tipping paper varnish for preventing cigarette sticks from sticking. Preferably, the method comprises the following steps: in the container of step b), stirring is started, and the lubricating liquid obtained in step a) is slowly added to the base varnish in the container, and after uniform dispersion, the cigarette tipping paper varnish for preventing cigarette sticks from sticking is obtained.

[0056] In the present invention, the stirring speed of the dispersion is preferably 500 r / min to 1000 r / min, and the time is preferably 30 min to 60 min.

[0057] In addition, in the preferred embodiment of the present invention, other technical solutions that can ensure that the raw materials are fully mixed and stirred to obtain the cigarette tipping paper varnish that prevents cigarette sticks from sticking can be adopted, which are also within the protection scope of the present invention.

[0058] The prepared product is further used in gravure printing to prepare cigarette tipping paper. The gravure printing of the prepared varnished oil for cigarette tipping paper has a varnish ink amount of <3g / m 2 , and is mainly used in the last process of printing tipping paper, and is in the outermost layer of the finished tipping paper product; the cigarettes in the tipping paper bundle prepared by this method will still not have any cigarette sticking phenomenon under a continuous high temperature environment of 75°C for 48 hours, which can completely solve the quality problem of cigarette sticking.

[0059] At the same time, the preparation method provided by the present invention has simple process, mild and easy-to-control conditions, and readily available raw materials with low cost, and has broad application prospects in the field of gravure printing for preparing cigarette tipping paper.

[0060] The present invention provides a tipping paper varnish for preventing cigarette sticks from sticking, which is prepared from raw materials including the following components: 10 to 40 parts by weight of resin; 60 to 90 parts by weight of solvent; 0.2 to 2 parts by weight of lubricant; 0.1 to 1 part by weight of auxiliary agent. Compared with the prior art, the tipping paper varnish for preventing cigarette sticks from sticking provided by the present invention adopts specific content components to achieve better overall interaction, and is applied to the last process of tipping paper printing. After being the outermost layer of the tipping paper finished product, the cigarettes in the prepared tipping paper bundle will still not have any cigarette sticking phenomenon under a continuous high temperature environment of 75°C for 48 hours, thereby completely solving the quality problem of cigarette sticking.

[0061] In addition, the preparation method provided by the present invention has simple process, mild and easy-to-control conditions, and readily available raw materials with low cost, and has broad application prospects in the field of gravure printing for preparing cigarette tipping paper.

[0062] In order to further illustrate the present invention, the following examples are used to describe the present invention in detail. If no specific techniques or conditions are specified in the following examples of the present invention, the techniques or conditions described in the literature in the art or in the product instructions are used; the reagents and equipment used are all commercial products, and the present invention does not limit or specify the specific manufacturers.

[0063] Example 1

[0064] The preparation steps of a cigarette tipping paper varnish for preventing cigarette sticking are as follows: 9 parts by weight of ethanol as a solvent is added into a stirring container, the stirring speed is turned on at 500 r / min, 0.5 parts by weight of lubricant wax powder is slowly added into the container, and the stirring is continued for 10 minutes to obtain a lubricating liquid; 80 parts by weight of n-propyl acetate is added into the stirring container as a solvent, the stirring speed is turned on at 1000 r / min, 10 parts by weight of cellulose acetate butyrate with medium butyryl content and low viscosity, 0.2 parts by weight of propylene glycol monoethyl ether, and 0.3 parts by weight of Tween 80 are slowly added into the container in sequence, the stirring is continued for 60 minutes, the lubricating liquid is added into the container, and the stirring is continued for 60 minutes to obtain a final varnish product.

[0065] The prepared varnish product is used for gravure printing of tipping paper, which is used in the last process of tipping paper printing. The varnish ink amount is 0.5g / m 2 The tipping paper prepared in this way is suitable for the preparation of ordinary acetate fiber tow filter cigarettes. Ordinary tipping paper was used as the comparative sample 1 to prepare cigarette samples with ordinary filters. The content of plasticizer in cigarette filters was subsequently detected by headspace gas phase analysis. The stickiness of cigarettes in unopened cigarette boxes was verified by continuous high temperature oven test. The data are shown in Appendix 1.

[0066] Example 2

[0067] The preparation steps of a cigarette tipping paper varnish for preventing cigarette sticking are as follows: 50 parts by weight of ethanol as a solvent is added into a stirring container, the stirring speed is turned on at 1000 r / min, 30 parts by weight of acrylic resin is slowly added into the container, the stirring is continued for 30 minutes, 0.2 parts by weight of dimethyl silicone oil as a lubricant is slowly added into the container, the stirring is continued for 30 minutes to obtain a base varnish with a lubricating auxiliary agent; 10 parts of ethyl acetate as a solvent is added into the stirring container, the stirring speed is turned on at 1000 r / min, 9 parts by weight of cellulose acetate butyrate with a high butyryl content, 0.3 parts by weight of propylene glycol monobutyl ether and 0.5 parts by weight of Tween 80 are slowly added into the container in sequence, the stirring is continued for 60 minutes, the base varnish with a lubricating auxiliary agent is added into the container, and the stirring is continued for 60 minutes to obtain a final varnish product.

[0068] The prepared varnish product is used for gravure printing of tipping paper, and is applied to the last process of tipping paper printing. The varnish ink amount is 1g / m 2 The tipping paper prepared in this way is suitable for the preparation of ordinary acetate fiber tow filter cigarettes. Ordinary tipping paper was used as the comparative sample 2 to prepare cigarette samples with ordinary filters. The content of plasticizer in cigarette filters was subsequently detected by headspace gas phase analysis. The stickiness of cigarettes in unopened cigarette boxes was verified by continuous high temperature oven test. The data are shown in Table 1.

[0069] Example 3

[0070] The preparation steps of a cigarette tipping paper varnish for preventing cigarette sticking are as follows: 60 parts by weight of n-propyl acetate is added as a solvent into a stirring container, the stirring speed is turned on at 1000 r / min, 15 parts by weight of polyurethane and 5 parts by weight of cellulose acetate butyrate with medium butyryl content and low viscosity are slowly added into the container, the stirring is continued for 30 minutes, 2 parts by weight of dimethyl silicone oil as a lubricant is slowly added into the container, the stirring is continued for 30 minutes to obtain a base varnish with a lubricating auxiliary agent; 12 parts of ethyl acetate is added as a solvent into the stirring container, the stirring speed is turned on at 1500 r / min, 5 parts by weight of acrylic resin, 0.5 parts by weight of propylene glycol monobutyl ether and 0.5 parts by weight of OP-10 are slowly added into the container in sequence, the stirring is continued for 60 minutes, the base varnish with a lubricating auxiliary agent is added into the container, and the stirring is continued for 60 minutes to obtain a final varnish product.

[0071] The prepared varnish product is used for gravure printing of tipping paper, and is applied to the last process of tipping paper printing. The varnish ink amount is 3g / m 2. The tipping paper prepared in this way is suitable for the preparation of cigarettes such as acetate tow filters with special configurations. The content of plasticizers in cigarette filters was subsequently detected by headspace gas phase chromatography, and the stickiness of cigarettes in unopened cigarette boxes was verified by a continuous high-temperature oven test. The tipping paper prepared in this way is suitable for the preparation of cigarettes such as acetate tow filters with special configurations. Ordinary tipping paper was used as control sample 3 to prepare cigarette samples with special configuration filters. The content of plasticizers in cigarette filters was subsequently detected by headspace gas phase chromatography, and the stickiness of cigarettes in unopened cigarette boxes was verified by a continuous high-temperature oven test. The data are shown in Table 1.

[0072] Table 1

[0073]

[0074] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tipping paper varnish for preventing cigarette sticks from sticking, prepared from raw materials including the following components: 10 to 40 parts by weight of resin; 60 to 90 parts by weight of solvent; 0.2 to 2 parts by weight of lubricant; The additive is 0.1 to 1 part by weight.

2. The tipping paper varnish for preventing cigarette sticking according to claim 1, characterized in that: The resin is selected from one or more of cellulose acetate butyrate, polyurethane, epoxy resin and acrylic resin.

3. The tipping paper varnish for preventing cigarette sticking according to claim 1, characterized in that: The solvent is selected from one or more of ethanol, ethyl acetate, n-propyl acetate, styrene and methyl methacrylate.

4. The tipping paper varnish for preventing cigarette sticking according to claim 1, characterized in that: The lubricant is selected from dimethyl silicone oil and / or wax powder.

5. The tipping paper varnish for preventing cigarette sticking according to claim 1, characterized in that: The auxiliary agent is selected from one or more of a defoamer, a leveling agent and an emulsifier.

6. The tipping paper varnish for preventing cigarette sticking according to claim 5, characterized in that: The defoamer is selected from polydimethylsiloxane and / or polyether modified silicone oil; the leveling agent is selected from propylene glycol monoethyl ether and / or propylene glycol monobutyl ether; and the emulsifier is selected from Tween and / or OP.

7. A method for preparing the tipping paper varnish for preventing cigarette sticking according to any one of claims 1 to 6, comprising the following steps: a) mixing the solvent and the lubricant for the first time to obtain a lubricating liquid; b) mixing the remaining solvent with the resin and the additive for a second time to obtain a base varnish; c) adding the lubricating oil obtained in step a) into the base varnish obtained in step b) to disperse the lubricating oil to obtain a tipping paper varnish for preventing cigarette sticks from sticking; There is no restriction on the order of step a) and step b).

8. The preparation method according to claim 7, characterized in that: The stirring speed of the first mixing in step a) is 500 r / min to 1000 r / min, and the time is 10 min to 60 min.

9. The preparation method according to claim 7, characterized in that: The stirring speed of the second mixing in step b) is 1000 r / min to 1500 r / min, and the time is 60 min to 120 min.

10. The preparation method according to claim 7, characterized in that: The stirring speed of the dispersion in step c) is 500 r / min to 1000 r / min, and the time is 30 min to 60 min.

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