Cigarette filter tip adhesive and preparation method thereof

Abstract

The invention discloses a cigarette filter tip adhesive and a preparation method thereof, and belongs to the technical field of cigarette adhesives. The mouthpiece adhesive comprises the following components: a modified VAE emulsion, a rheology modifier, a plasticizer, a tackifier, a wetting agent, a defoaming agent, a preservative and a diluent. According to the modified VAE emulsion, the VAE emulsion serves as a main material, meanwhile, the hydroxyethyl cellulose, the hydroxypropyl methyl cellulose and the polyether polyol serve as auxiliary materials for auxiliary matching, the auxiliary materials comprise a plurality of branched chain hydroxyl groups, the branched chain hydroxyl groups are combined into complex net-shaped branched chains, the bonding strength of the whole modified VAE emulsion is improved, and the rheological property of the whole modified VAE emulsion is greatly improved. Meanwhile, the rheological modifier is added, so that the rheological property of the mouthpiece adhesive is further improved, and the mouthpiece adhesive is free of foaming and particles in the use process.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette adhesives, and in particular to a cigarette mouthpiece adhesive and a preparation method thereof. Background Art

[0002] Cigarette tip glue is an indispensable and important component of cigarette products. Its main function is to firmly bond cigarette paper and filter rod together, and play a role in filtering and fixing. As people pay more and more attention to healthy lifestyles, the market demand for environmentally friendly cigarette tip glue is also increasing.

[0003] At present, the preparation methods of cigarette tip glue mainly include solution method, hot melt method, radiation cross-linking method, and reactive hot melt method. However, these preparation methods have problems such as environmental pollution, large equipment investment, and complex process.

[0004] The prior art uses new nozzle glue material technology, such as starch-derived adhesives, monocarboxylic acid copolymer adhesives, essential oils / flavors, adhesive additives and other additives to improve the rheological properties, bonding strength and quick-drying properties of nozzle glue. However, there are still problems such as unsatisfactory viscosity, low bonding strength and slow drying speed. Therefore, an environmentally friendly nozzle glue with low odor, excellent rheological properties and permeability, good bonding performance, high quick-drying properties, no foaming and no particles is provided. Summary of the invention

[0005] The invention provides a cigarette mouthpiece glue, which has the functions of low odor, excellent rheological property and permeability, good bonding property, high quick drying property, no foaming and no particles.

[0006] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0007] A cigarette mouthpiece glue, comprising the following components in parts by weight: 60-80 parts of modified VAE emulsion, 0.1-5 parts of rheology modifier, 1-10 parts of plasticizer, 1-10 parts of tackifier, 0.1-10 parts of wetting agent, 0-0.5 parts of defoamer, 0-1.0 parts of preservative, and 0-15 parts of diluent;

[0008] The modified VAE emulsion comprises the following components in parts by weight: 70-80 parts of VAE emulsion, 1-20 parts of polyvinyl alcohol, 1-10 parts of hydroxyethyl cellulose, 1-10 parts of hydroxypropyl methyl cellulose, 1-10 parts of polyether polyol, and 1-10 parts of deionized water;

[0009] The rheology modifier is alkyl alcohol polyoxyethylene ether and its derivatives;

[0010] The wetting agent is organosilicon-modified siloxane.

[0011] Furthermore, the cigarette mouthpiece glue comprises the following components in parts by weight: 60-80 parts of modified VAE emulsion, 0.1-5 parts of rheology modifier, 1-10 parts of plasticizer, 1-10 parts of tackifier, 0.1-5 parts of wetting agent, 0.1-0.5 parts of defoaming agent, 0.1-1.0 parts of preservative, and 0-15 parts of diluent.

[0012] Furthermore, the preparation method of the modified VAE emulsion includes: adding VAE emulsion, polyvinyl alcohol and deionized water into a stirrer and ultrasonically stirring for 15-30 minutes to obtain a premixed emulsion; transferring the premixed emulsion into a common stirrer, adding hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol and stirring and mixing for 30-60 minutes, filtering, discharging, and obtaining the modified VAE emulsion.

[0013] Furthermore, the modified VAE emulsion includes the following components in parts by weight: 70-80 parts of VAE emulsion, 10-20 parts of polyvinyl alcohol, 1-2 parts of hydroxyethyl cellulose, 1-2 parts of hydroxypropyl methyl cellulose, 5-8 parts of polyether polyol, and 1-10 parts of deionized water.

[0014] Furthermore, the weight ratio of hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol in the modified VAE emulsion is 1-2:1:4-5.

[0015] Furthermore, the polyether polyol is a polymer obtained by polymerization of ethylene oxide and polyol, and the polyol is selected from diol, triol and tetraol. The EO number of the polyether polyol is 5-30.

[0016] Furthermore, in the preparation method of the modified VAE emulsion, the stirring speed of the ultrasonic stirring is 200r / min-300r / min; the stirring speed in the ordinary stirrer is 100r / min-200r / min, and the stirring temperature is 60°C-80°C.

[0017] Further, the rheology modifier is any one or more of isomeric decanol polyoxyethylene ether, isomeric decanol polyoxyethylene ether methacrylate, isomeric tridecanol polyoxyethylene ether, and isomeric tridecanol polyoxyethylene ether methacrylate. The EO number in the rheology modifier is 5-20, preferably 5-10.

[0018] Furthermore, the organosilicon-modified siloxane is any one or more of a polyether-modified heptamethyl trisiloxane gemini silicon surfactant and a methyl silsesquioxane. Preferably, the polyether-modified heptamethyl trisiloxane gemini silicon surfactant has the structural formula: wherein n=2-10, preferably 5-8.

[0019] Furthermore, the plasticizer is one or more of dipropylene glycol dibenzoate, triethyl citrate, polyolefin (L705), 2,2,4-trimethyl 1,3-pentanediol diisobutyrate (TXIB), and epoxidized soybean oil.

[0020] Furthermore, the tackifier is any one or more of rosin glycerol ester, rosin pentaerythritol ester, and hydrogenated rosin.

[0021] Furthermore, the defoaming agent is selected from any one or more of plant oil defoaming agents, A10 white mineral oil and polydimethylsiloxane.

[0022] Further, the preservative is selected from any one or more of 5-chloro-2-methyl-2H-isothiazol-3-one, 2-methyl-3(2H)-isothiazolinone, 1,2-benzisothiazolyl-3(2H)-one, 2-bromo-2-nitro-1,3-propanediol and 2,2-dibromo-2-cyanoacetamide. The preservative can improve the anti-corrosion of the system and solve the problems of product deterioration, mildew, fermentation, odor and the like caused by fungal contamination.

[0023] Furthermore, the diluent is deionized water.

[0024] The present invention also discloses a method for preparing a cigarette mouthpiece glue, comprising the following steps:

[0025] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0026] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0027] The cigarette mouthpiece glue and the preparation method thereof of the present invention have the following beneficial effects:

[0028] (1) The modified VAE emulsion of the present invention uses VAE emulsion as the main ingredient, and hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol are used as auxiliary ingredients for auxiliary preparation. The auxiliary ingredients have multiple branched hydroxyl groups, which are combined into a complex network of branches, so that the bonding strength and rheological properties of the entire modified VAE emulsion are greatly improved. At the same time, a rheological modifier is added to further improve the rheological properties of the nozzle glue, so that it does not foam and has no particles during use.

[0029] (2) The present invention adds an organosilicon gemini surfactant, which can improve the permeability of the mouthpiece glue, quickly and firmly bond the tobacco shreds to the filter tip, and has good quick-drying performance. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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] Example 1

[0032] A modified VAE emulsion comprises the following components in parts by weight: 80 parts of VAE emulsion, 20 parts of polyvinyl alcohol, 2 parts of hydroxyethyl cellulose, 2 parts of hydroxypropyl methyl cellulose, 10 parts of polyether (EO=10) polyol and 10 parts of deionized water.

[0033] The preparation method of the modified VAE emulsion in this embodiment is as follows: VAE emulsion, polyvinyl alcohol and deionized water are added to a stirrer and ultrasonically stirred for 30 minutes to obtain a premixed emulsion at a stirring speed of 300 r / min; the premixed emulsion is transferred to a common stirrer, and hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol are added, stirred and mixed for 60 minutes at a stirring speed of 200 r / min and a stirring temperature of 80°C, filtered, and discharged to obtain a modified VAE emulsion.

[0034] Example 2

[0035] A modified VAE emulsion comprises the following components in parts by weight: 70 parts of VAE emulsion, 15 parts of polyvinyl alcohol, 2 parts of hydroxyethyl cellulose, 1 part of hydroxypropyl methyl cellulose, 5 parts of polyether (EO=5) polyol and 8 parts of deionized water.

[0036] The preparation method of the modified VAE emulsion in this embodiment is as follows: VAE emulsion, polyvinyl alcohol and deionized water are added to a stirrer and ultrasonically stirred for 30 minutes to obtain a premixed emulsion at a stirring speed of 300 r / min; the premixed emulsion is transferred to a common stirrer, and hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol are added, stirred and mixed for 60 minutes at a stirring speed of 200 r / min and a stirring temperature of 80°C, filtered, and discharged to obtain a modified VAE emulsion.

[0037] Example 3

[0038] A modified VAE emulsion comprises the following components in parts by weight: 70 parts of VAE emulsion, 15 parts of polyvinyl alcohol, 2 parts of hydroxyethyl cellulose, 2 parts of hydroxypropyl methyl cellulose, 8 parts of polyether (EO=10) polyol and 5 parts of deionized water.

[0039] The preparation method of the modified VAE emulsion in this embodiment is as follows: VAE emulsion, polyvinyl alcohol and deionized water are added to a stirrer and ultrasonically stirred for 30 minutes to obtain a premixed emulsion at a stirring speed of 300 r / min; the premixed emulsion is transferred to a common stirrer, and hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol are added, stirred and mixed for 60 minutes at a stirring speed of 200 r / min and a stirring temperature of 80°C, filtered, and discharged to obtain a modified VAE emulsion.

[0040] Example 4

[0041] A cigarette mouthpiece glue comprises the following components in parts by weight: 60 parts of modified VAE emulsion, 0.1 parts of isotridecyl alcohol polyoxyethylene ether (EO=10) as a rheology modifier, 1 part of epoxy soybean oil as a plasticizer, 1 part of rosin glycerol ester as a tackifier, and 0.5 parts of polyether-modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent.

[0042] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 1.

[0043] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0044] Where n=5.

[0045] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0046] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0047] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0048] Example 5

[0049] A mouthpiece glue for cigarettes, comprising 70 parts of modified VAE emulsion, 1 part of isomeric decanol polyoxyethylene ether (EO=10) as a rheology modifier, 1 part of dipropylene glycol dibenzoate as a plasticizer, 1 part of rosin glycerol ester as a tackifier, 0.3 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoamer, 0.1 parts of 2-methyl-3(2H)-isothiazolinone as a preservative, and 8 parts of deionized water;

[0050] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 2.

[0051] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0052] Where n=8.

[0053] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0054] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0055] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0056] Example 6

[0057] A mouthpiece glue for cigarettes, comprising 80 parts of modified VAE emulsion, 5 parts of isomeric tridecanol polyoxyethylene ether (EO=7) methacrylate as a rheology modifier, 2 parts of triethyl citrate as a plasticizer, 2 parts of rosin pentaerythritol ester as a tackifier, 0.5 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of polydimethylsiloxane as a defoaming agent, 0.1 parts of 1,2-benzisothiazolyl-3(2H)-one as a preservative, and 10 parts of deionized water;

[0058] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 3.

[0059] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0060] Where n=8.

[0061] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0062] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0063] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0064] Example 7

[0065] A mouthpiece glue for cigarettes, comprising 80 parts of modified VAE emulsion, 2 parts of rheology modifier isomeric decanol polyoxyethylene ether (EO=9) methacrylate, 2 parts of plasticizer polyolefin (L705), 2 parts of tackifier hydrogenated rosin, 1 part of wetting agent polyether modified heptamethyl trisiloxane gemini silicon surfactant, 0.1 part of defoamer A10 white mineral oil, 0.1 part of preservative 2-bromo-2-nitro-1,3-propylene glycol, and 10 parts of deionized water;

[0066] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 1.

[0067] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0068] Where n=8.

[0069] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0070] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0071] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0072] Example 8

[0073] A mouthpiece glue for cigarettes, comprising 80 parts of modified VAE emulsion, 5 parts of isotridecyl alcohol polyoxyethylene ether (EO=7) as a rheology modifier, 2 parts of 2,2,4-trimethyl 1,3-pentanediol diisobutyrate (TXIB) as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of polyether-modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoamer, 0.1 parts of 5-chloro-2-methyl-2H-isothiazol-3-one as a preservative, and 10 parts of deionized water;

[0074] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 1.

[0075] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0076] Where n=7.

[0077] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0078] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0079] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0080] Example 9

[0081] A cigarette mouthpiece glue, comprising 80 parts of modified VAE emulsion, 5 parts of isotridecyl alcohol polyoxyethylene ether (EO=7) as a rheology modifier, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoamer, and 10 parts of deionized water;

[0082] The modified VAE emulsion in this embodiment is the modified VAE emulsion in Example 1.

[0083] The structural formula of the polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is:

[0084] Where n=8.

[0085] The preparation method of the cigarette mouthpiece glue in this embodiment comprises the following steps:

[0086] S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid;

[0087] S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity of the system and the required solid content to obtain the cigarette mouthpiece glue.

[0088] Comparative Example 1

[0089] A cigarette mouthpiece glue comprises: 80 parts of VAE emulsion, 5 parts of isotridecyl alcohol polyoxyethylene ether as a rheology modifier, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoamer, and 10 parts of deionized water.

[0090] The rheology modifier in this embodiment is the same as that in Example 9.

[0091] The polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is the same as that in Embodiment 9.

[0092] Comparative Example 2

[0093] A cigarette mouthpiece glue comprises: 80 parts of VAE emulsion, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoaming agent, and 10 parts of deionized water.

[0094] The polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is the same as that in Embodiment 9.

[0095] Comparative Example 3

[0096] A cigarette mouthpiece glue comprises: 80 parts of modified VAE emulsion, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of polyether modified heptamethyl trisiloxane gemini silicon surfactant as a wetting agent, 0.1 parts of A10 white mineral oil as a defoamer, and 10 parts of deionized water.

[0097] The polyether-modified heptamethyltrisiloxane gemini silicon surfactant in this embodiment is the same as that in Embodiment 9.

[0098] Comparative Example 4

[0099] A cigarette mouthpiece glue comprises: 80 parts of modified VAE emulsion, 5 parts of isotridecyl alcohol polyoxyethylene ether as a rheology modifier, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.1 parts of A10 white mineral oil as a defoamer, and 10 parts of deionized water.

[0100] The rheology modifier in this embodiment is the same as that in Example 9.

[0101] Comparative Example 5

[0102] A cigarette mouthpiece glue comprises: 80 parts of modified VAE emulsion, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.1 parts of A10 white mineral oil as a defoamer, and 10 parts of deionized water.

[0103] Comparative Example 6

[0104] A cigarette mouthpiece glue comprises: 80 parts of VAE emulsion, 2 parts of epoxy soybean oil as a plasticizer, 2 parts of rosin glycerol ester as a tackifier, 0.5 parts of methyl silsesquioxane as a wetting agent, 0.1 parts of A10 white mineral oil as a defoaming agent, and 10 parts of deionized water.

[0105] 1. Mouthpiece glue performance test

[0106] The mouthpiece glues obtained in Examples 4-9 and Comparative Examples 1-6 were tested in terms of viscosity, solid content, peel strength, initial tack, etc., wherein: the viscosity and solid content test methods refer to the standard YC / T188-2004 "High-speed cigarette glue", which contains methods for determining viscosity and solid content. The peel strength refers to the standard GB / T 33320-2016 "Adhesives for food packaging materials and containers", chapter 7.8.6 of the cold-seal aqueous adhesive peel strength test method. The initial tack refers to the standard GB / T 36060-2018 "Control requirements and test methods for bonding process of hardcover books with water-based adhesives", and the initial tack is expressed by the initial tack time. The shorter the initial tack time, the faster the adhesion rises after the glue is applied, and the better the initial tack. The performance test results are shown in Table 1:

[0107] Table 1 Performance test data

[0108] sample Viscosity, mPa.s Solid content, % Initial viscosity, s Peel strength, N / m Example 4 5300 52.4 28 142 Example 5 4320 48.3 24 153 Example 6 4500 49.3 22 172 Example 7 4400 48.5 25 165 Example 8 5000 49.8 20 181 Example 9 5050 50.1 20 180 Comparative Example 1 4200 53.6 50 140 Comparative Example 2 4150 51.7 51 130 Comparative Example 3 4800 50.3 25 162 Comparative Example 4 4900 50.3 21 178 Comparative Example 5 4870 50.2 41 159 Comparative Example 6 4200 51.7 52 128

[0109] It can be seen from the data in Table 1 that the viscosity and solid content of the nozzle glue provided by the present invention can be arbitrarily adjusted within the range of viscosity of 4000-5500 mPa·s and solid content of 48-54%, and can be widely applied to various models.

[0110] According to the data in Table 1, it can be seen that the initial tack of the nozzle adhesive provided by the present invention can reach 20 / second, and the peel strength can reach 180N / m. Comparing Example 8 with Example 9, the peel strength and initial tack are both relatively ideal.

[0111] In Examples 5-9, the addition of rheology modifier isomeric tridecanol polyoxyethylene ether methacrylate and wetting agent polyether modified heptamethyltrisiloxane gemini silicone surfactant can enhance the initial adhesion and peel strength respectively; from Example 9 and Comparative Example 4, it can be concluded that the wetting agent has the effect of enhancing the peel strength and initial adhesion; from Example 9 and Comparative Example 2, it can be seen that the leveling agent also has the effect of enhancing the peel strength and initial adhesion.

[0112] 2. Machine Testing

[0113] The nozzle glue prepared in Example 9 and Comparative Examples 1-6 was applied on a PROTOS-M8 device for pre-punched tipping paper, with the maximum speeds being 10,000 pcs / min, 16,000 pcs / min, and 20,000 pcs / min, respectively. The application results are shown in Table 2.

[0114] Table 2 Application effect on the machine

[0115]

[0116] The results of this machine show that enhancing the peel strength and initial adhesion is beneficial to reducing the number of dirty machines and increasing the rejection rate of air leakage. The increase in machine speed also requires higher glue capacity. At the same time, the dirty machines and rejection rate will also increase accordingly. However, Example 9 of the present invention still has good anti-dirty machine and rejection rate capabilities under high machine speed conditions.

[0117] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0118] Finally, it should be noted that the embodiments disclosed in the present invention are only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cigarette tip glue, characterized in that: The invention comprises the following components in parts by weight: 60-80 parts of modified VAE emulsion, 0.1-5 parts of rheology modifier, 1-10 parts of plasticizer, 1-10 parts of tackifier, 0.1-10 parts of wetting agent, 0-0.5 parts of defoamer, 0-1.0 parts of preservative and 0-15 parts of diluent; The modified VAE emulsion comprises the following components in parts by weight: 70-80 parts of VAE emulsion, 1-20 parts of polyvinyl alcohol, 1-10 parts of hydroxyethyl cellulose, 1-10 parts of hydroxypropyl methyl cellulose, 1-10 parts of polyether polyol, and 1-10 parts of deionized water; The rheology modifier is alkyl alcohol polyoxyethylene ether and its derivatives; The wetting agent is organosilicon-modified siloxane.

2. The cigarette tip glue according to claim 1, characterized in that: The invention comprises the following components in parts by weight: 60-80 parts of modified VAE emulsion, 0.1-5 parts of rheology modifier, 1-10 parts of plasticizer, 1-10 parts of tackifier, 0.1-5 parts of wetting agent, 0.1-0.5 parts of defoamer, 0.1-1.0 parts of preservative and 0-15 parts of diluent.

3. The cigarette tip glue according to claim 1, characterized in that: The preparation method of the modified VAE emulsion comprises: adding VAE emulsion, polyvinyl alcohol and deionized water into a stirrer and ultrasonically stirring for 15-30 minutes to obtain a premixed emulsion; transferring the premixed emulsion into a common stirrer, adding hydroxyethyl cellulose, hydroxypropyl methyl cellulose and polyether polyol and stirring and mixing for 30-60 minutes, filtering and discharging to obtain the modified VAE emulsion.

4. The cigarette tip glue according to claim 3, characterized in that: The stirring speed of the ultrasonic stirring is 200r / min-300r / min; the stirring speed in the ordinary stirrer is 100r / min-200r / min, and the stirring temperature is 60°C-80°C.

5. The cigarette tip glue according to claim 3, characterized in that: The rheology modifier is any one or more of isomeric decanol polyoxyethylene ether, isomeric decanol polyoxyethylene ether methacrylate, isomeric tridecanol polyoxyethylene ether, and isomeric tridecanol polyoxyethylene ether methacrylate.

6. The cigarette tip glue according to claim 1, characterized in that: The organosilicon-modified siloxane is any one or more of polyether-modified heptamethyltrisiloxane gemini silicon surfactant and methyl silsesquioxane.

7. The cigarette tip glue according to claim 1, characterized in that: The plasticizer is one or more of dipropylene glycol dibenzoate, triethyl citrate, polyolefin, 2,2,4-trimethyl 1,3-pentanediol diisobutyrate, and epoxidized soybean oil.

8. The cigarette tip glue according to claim 1, characterized in that: The tackifier is any one or more of rosin glycerol ester, rosin pentaerythritol ester and hydrogenated rosin.

9. A method for preparing the cigarette mouthpiece glue according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Add the modified VAE emulsion and rheology modifier into the reactor at room temperature, slowly add the plasticizer, tackifier and wetting agent under high-speed stirring, stir evenly, and obtain a premixed liquid; S2 then adds a preservative and a defoaming agent to the premixed liquid, and finally adds a diluent to adjust the viscosity and solid content of the system to obtain a cigarette mouthpiece glue.

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