A water-soluble core material capsule for cigarettes and a high molecular wrapping material thereof

Abstract

The application belongs to the technical field of cigarette materials, and specifically discloses a high-molecular wrapping material for a water-soluble core material capsule for cigarettes, which comprises bisphenol A epoxy acrylate resin, ethylene-vinyl acetate copolymer, a photoinitiator, a viscosity regulator and an antioxidant; the viscosity of the bisphenol A epoxy acrylate resin is 100-250 mpa·s; the viscosity of the ethylene-vinyl acetate copolymer is 100-250 mpa·s; the mass fraction of the bisphenol A epoxy acrylate resin is 10-35 parts; and the mass fraction of the ethylene-vinyl acetate copolymer is 65-90 parts. The application also provides a water-containing capsule wrapped by the high-molecular wrapping material and an application thereof. Through the synergy of the components and the process, the application can successfully realize the preparation of the hydrophilic capsule, improve the roundness and thickness uniformity, improve the water retention of the water-containing capsule, reduce the water loss, and the capsule has appropriate strength and is beneficial to the application in cigarettes.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of high molecular encapsulating material for preparing water-soluble core material capsule and application, it relates to cigarette technology field, specifically relates to water-soluble core material capsule wall material preparation technical field. BACKGROUND

[0002] The essence of the present application is to provide a kind of high molecular encapsulating material for preparing water-soluble core material capsule and application, it relates to cigarette technology field, specifically relates to water-soluble core material capsule wall material preparation technical field.

[0003] The essence of the present application is to provide a kind of high molecular encapsulating material for preparing water-soluble core material capsule and application, it relates to cigarette technology field, specifically relates to water-soluble core material capsule wall material preparation technical field.

[0004] The essence of the present application is to provide a kind of high molecular encapsulating material for preparing water-soluble core material capsule and application, it relates to cigarette technology field, specifically relates to water-soluble core material capsule wall material preparation technical field.

[0005] The essence of the present application is to provide a kind of high molecular encapsulating material for preparing water-soluble core material capsule and application, it relates to cigarette technology field, specifically relates to water-soluble core material capsule wall material preparation technical field.

[0006] In summary, although there have been some explorations of water-soluble capsule for tobacco, the explorations are still mainly in the experimental stage, and few of them have been actually commercialized, and the main reason for this situation is that the prior art is difficult to effectively solve the wall material of the water-soluble capsule for tobacco, and it is difficult to effectively solve the strength and water content stability of the water-soluble capsule. SUMMARY

[0007] To solve the technical problems of insufficient strength, water content and water content stability of the existing water-soluble capsule for tobacco, the first object of the present application is to provide a polymer wrapping material (also referred to as wrapping material or wall material) of a water-soluble capsule for tobacco (also referred to as water-containing capsule for tobacco in the present application), which aims to provide a water-soluble capsule for tobacco that can effectively improve the strength, water content and stability of the water-soluble capsule.

[0008] The second object of the present application is to provide a water-soluble capsule for tobacco containing the polymer wrapping material.

[0009] The third object of the present application is to provide a preparation method of a water-soluble capsule for tobacco.

[0010] The fourth object of the present application is to provide an application method of the water-soluble capsule for tobacco.

[0011] The fifth object of the present application is to provide a cigarette containing the water-soluble capsule.

[0012] A polymer wrapping material of a water-soluble capsule for tobacco, comprising bisphenol A epoxy acrylate resin, ethylene-vinyl acetate copolymer, photoinitiator, viscosity regulator and antioxidant;

[0013] The viscosity of the bisphenol A epoxy acrylate resin is 100-250 mpa·s;

[0014] The viscosity of the ethylene-vinyl acetate copolymer is 100-250 mpa·s;

[0015] The mass fraction of the bisphenol A epoxy acrylate resin is 10-35 parts; and the mass fraction of the ethylene-vinyl acetate copolymer is 65-90 parts.

[0016] The present application innovatively finds that the combination of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer, further combined with polymer viscosity, polymer ratio and the combination of photoinitiator, viscosity regulator and antioxidant additives, can achieve synergy, successfully realize the preparation of hydrophilic capsule, improve the roundness and thickness uniformity, improve the water retention of water-containing capsule, reduce water loss, and the capsule also has appropriate strength, which is beneficial to the application in cigarettes.

[0017] As preferred, the softening point of the bisphenol A epoxy acrylate resin is 64-76℃.

[0018] As preferred, the viscosity of the bisphenol A epoxy acrylate resin is 100-200 mpa·s. It is found that the bisphenol A epoxy acrylate resin with the preferred viscosity can further improve the strength adaptability, water-encapsulating and water-retaining performance of the capsule.

[0019] As preferred, the epoxy value of the bisphenol A epoxy acrylate resin is 0.18-0.46, preferably 0.18-0.22.

[0020] As preferred, the softening point of the ethylene-vinyl acetate copolymer is 70-100℃.

[0021] As preferred, the viscosity of the ethylene-vinyl acetate copolymer is 150-200 mpa·s. It is found that the ethylene-vinyl acetate copolymer with the preferred viscosity can further improve the strength adaptability, water-encapsulating and water-retaining performance of the capsule.

[0022] It is also found that controlling the proportion of the dual polymer can further improve the synergistic effect of the two, improve the roundness and thickness uniformity of the capsule, control the strength, and improve the water-encapsulating and water-retaining performance.

[0023] As preferred, the mass fraction of the bisphenol A epoxy acrylate resin is 15-25 parts; and the mass fraction of the ethylene-vinyl acetate copolymer is 75-85 parts.

[0024] In the present application, the dual polymer, the viscosity and the proportion, the photoinitiator, the viscosity regulator and the antioxidant can further facilitate the preparation of the capsule and improve the performance of the capsule, so that the capsule is suitable for use in cigarettes.

[0025] As preferred, the photoinitiator is one or more of photoinitiator 184, 1173 and 907.

[0026] As preferred, the viscosity regulator contains one or more of paraffin wax, microcrystalline wax, synthetic wax and Ftor wax.

[0027] As preferred, the antioxidant contains one or more of antioxidant 1010, 1076 and 186.

[0028] As preferred, in the high-molecular encapsulating material, the mass fraction of the photoinitiator is less than or equal to 5 parts; the mass fraction of the viscosity regulator is less than or equal to 8 parts; and the mass fraction of the antioxidant is less than or equal to 5 parts.

[0029] As preferred, the photoinitiator is 2-4 parts by weight; the viscosity modifier is 4-6 parts by weight; and the antioxidant is 1-3 parts by weight.

[0030] In the present application, as preferred, the content of the bisphenol A epoxy acrylate resin in the high-molecular encapsulating material of the water-soluble core material capsule for cigarettes is 10-30 wt% (preferably 13-25 wt%); the content of the photoinitiator is 2-4 wt%; the content of the viscosity modifier paraffin is 4-6 wt%; the content of the antioxidant is 1-3 wt%; and the balance is ethylene-vinyl acetate copolymer.

[0031] In the present application, the viscosity of the encapsulating material is between 50-300 mpa·s. As a preferred solution, the viscosity of the encapsulating material in the present application is between 100-200 mpa·s. More preferably, the viscosity of the encapsulating material in the present application is between 100-150 mpa·s.

[0032] In the present application, the melting temperature of the encapsulating material is between 50-100℃. As a preferred solution, the melting temperature of the encapsulating material in the present application is between 60-90℃. More preferably, the melting temperature of the encapsulating material in the present application is between 70-85℃.

[0033] The present application also provides a water-soluble core material capsule for cigarettes, comprising a water-soluble core material and a wall material encapsulating the water-soluble core material, wherein the wall material is the high-molecular encapsulating material as described in the present application.

[0034] As preferred, the water-soluble core material of the water-soluble core material capsule for cigarettes is water or an aqueous solution with water-soluble components dissolved therein.

[0035] The water-soluble components can be any water-soluble additives allowed in the field of cigarettes and helpful for improving the performance of cigarettes.

[0036] Further preferably, the water-soluble components are at least one of water-soluble flavoring components, water-soluble harm-reducing components, humectants, etc.

[0037] The present application also provides a preparation method of the water-soluble core material capsule for cigarettes, obtaining a high-molecular encapsulating material melt (also referred to as a high-molecular encapsulating material solution in the present application) and a water-soluble core material solution, encapsulating the water-soluble core material solution with the high-molecular encapsulating material melt, obtaining a rough capsule, and then solidifying to obtain the water-soluble core material capsule for cigarettes.

[0038] In the present application, the high-molecular encapsulating material melt is obtained by melting each component in the dark.

[0039] For example, the wall material solution preparation steps are as follows: (1) weigh the bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer according to the weight fraction; (2) put the mixture into a melting kettle, raise the temperature to 50-100 DEG C, melt for 1-2 h in the dark, and continuously stir the liquid after melting to make it uniformly mixed; (3) the liquid after melting is treated by ultrasonic to remove bubbles to obtain a light yellow transparent viscous liquid, which is finally transferred into a heat preservation box for standby, and the liquid is the wall material glue for preparing the water-soluble core material capsule.

[0040] In the application, the high molecular wrapping material solution can be wrapped around the water-soluble core material solution by using existing means and equipment. For example, a conventional coaxial double-hole drop head can be used to make the wrapping material solution flow out of the outer hole and the water-soluble core material solution flow out of the inner hole, so as to realize the wrapping of the wrapping solution on the core material. In the actual preparation process, a conventional drop pill machine can be used to realize the wrapping.

[0041] In the application, the solidification step includes a solidification liquid solidification step and a subsequent photo-curing step.

[0042] The solidification liquid is at least one of alcohol-water mixed liquid, paraffin oil and methyl silicone oil.

[0043] The photo-curing is carried out under the irradiation of an ultraviolet lamp.

[0044] The application further provides an application of the water-soluble core material capsule for cigarettes.

[0045] As preferred, the application adds the water-soluble core material capsule for cigarettes to the filter rod end to prepare the cigarette.

[0046] The application further provides a cigarette characterized by adding the water-soluble core material capsule for cigarettes.

[0047] The preferred cigarette of the application adds the water-soluble core material capsule for cigarettes to the filter rod section.

[0048] Beneficial effects:

[0049] 1. The application finds that the bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer have a synergistic effect, which can effectively improve the strength, water content and water content stability of the obtained capsule.

[0050] 2. The wall material of the application is a solid, which is convenient for packaging, transportation and storage; more importantly, the scheme is solvent-free and pollution-free. Compared with the existing means, the capsule prepared by the method of the application has excellent water retention, moderate strength, a crisp sound after capsule kneading and explosion, and a greatly reduced content of photoinitiator.

[0051] 3. In practical application, the solution prepared by the optimal material ratio and optimal condition is used as the wall material, water and aqueous solution are used as the core material, and a large amount of water-soluble core material capsules are prepared by using a drop pill machine under the action of double coaxial double needles; after photocuring, the strength of the wall material is further increased, and the obtained capsules have uniform particle size, moderate wall material thickness, high water content, and excellent water retention performance. The wall material has the advantages of simple production process, continuous and large-scale preparation, and has certain practical production conversion and popularization and application value. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 Picture of the burst bead prepared in Example 1; DETAILED DESCRIPTION

[0053] The application will be further described below in combination with specific examples and comparative examples. The following examples and comparative examples are intended to illustrate the application rather than further limit the application.

[0054] Example 1

[0055] 15 g of bisphenol A epoxy acrylate resin (Jiangsu Sanmu Chemical Co., Ltd., SM6105-80, softening point 70℃, melt viscosity 100 mpa·s, epoxy value 0.24), 75 g of ethylene-vinyl acetate copolymer (Yu Cheng Plastic Co., Ltd., 1317, softening point 80℃, melt viscosity 150 mpa·s), 3 g of photoinitiator 184, 5 g of viscosity regulator paraffin, and 2 g of antioxidant 1010 were weighed into a melting kettle, the temperature was raised to 70-85℃, and the kettle was melted in the dark for 1-2 h. Then, the melted liquid was treated by ultrasonic to remove bubbles to obtain a light yellow transparent viscous liquid, which was finally transferred into a thermostat for standby. A DWJ-2000S type full-automatic drop pill machine was started, the temperature of the glue tank (wall material) was raised to 80℃ and kept, the temperature of the material tank (core material) was raised to 40℃ and kept, the coaxial double needle drop head (diameter 2.5 mm) heater was turned on, the temperature was controlled at about 80℃ (±3℃, the same below) and kept, the glue pipeline heater was turned on, and the temperature was controlled at about 80℃ and kept. The solidification liquid circulation cooling system was turned on, the solidification liquid temperature was reduced to 20℃, then the stirring in the glue tank and the material tank was turned on, and the speed was adjusted to 100 r / min. After the temperature of each system was raised to the required temperature and the operation was normal, the wall material solution transferred into the thermostat was taken out and poured into the glue tank, the aqueous solution was poured into the material tank, and when the glue and the material liquid were both raised to the set temperature, the preparation could be started.

[0056] After everything is ready, start the glue pump, material pump, and control the glue injection speed and material liquid injection speed to 4:1, extrude and drop into the curing liquid (ethanol: water = 100:6) through the coaxial double-needle drop head. The capsule is quickly formed in the curing liquid, and then the formed capsule is subjected to photocuring under the ultraviolet lamp (254 nm, the same below) to obtain a large number of water-soluble core material capsules with uniform particle size and good roundness. The product and cross-sectional view are shown in Figure 1

[0057] The obtained capsule wall material is uniform in thickness, the average diameter is 3.16 mm, and the water-containing capsule yield (the percentage of the number of water-containing capsules in the total number of water-containing capsules and non-water-containing capsules in the same batch) reaches 99%. The capsules prepared without the photocuring step have no brittle sound when kneaded and broken, and the strength is 2N; while the capsules prepared after the photocuring step have a larger brittle sound after kneading and breaking, and the average strength is 10.5N, and the water content is 84.5%; after being placed in the air for one month, the water content is reduced by 1.4% (the water retention performance is shown in Table 1), which indicates that it has excellent water retention performance.

[0058]

[0059] It can be seen that the water-retaining capsules prepared in this case have excellent morphology and excellent water-retaining effect.

[0060] Example 2

[0061] Compared with Example 1, the total polymer (the total amount of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer) is 90g, and the difference is only in the control of the ratio of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer, which are (1): 0:100; (2): 5:95; (3) 10:90; (4) 15:85; (5): 20:80; (6): 25:75; (7): 30:70; (8): 35:65: (9): 40:60; (10): 45:55; other processes and operations are the same as Example 1.

[0062] The parameters of the prepared capsules are shown in Table 2:

[0063] Note: (a) refers to the weight ratio of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer;

[0064] (b): refers to the strength after photocuring;

[0065] ​By adjusting the ratio of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer in the wall material, the strength of the burst beads gradually increases with the increase of the amount of bisphenol A epoxy acrylate resin, but the water retention performance of the burst beads gradually deteriorates, and when the amount of bisphenol A epoxy acrylate resin is large, the yield of the burst beads is low. When the weight ratio of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer is between 15:85 and 25:75, the burst beads prepared have suitable strength and excellent water retention performance.

[0066] Example 3

[0067] Compared with Example 1, the only difference is that paraffin oil is used as the curing liquid, and other operations and parameters are the same as those in Example 1.

[0068] In this example, only the type of curing liquid is changed compared with Example 1. The obtained capsules have better roundness of shape than those in Example 1, and the strength, water content, and water retention of the capsules are comparable to those in Example 1. The production yield is more than 99%, the wall material thickness of the obtained capsules is uniform, the average diameter is 3.2 mm, the capsules prepared after the photocuring step have a larger brittle sound when burst, the average strength is 10.6 N, and the water content is 85%. When placed in air, the water content decreases by 1.3% after one month, indicating that the capsules have excellent water retention performance.

[0069] Example 4

[0070] Compared with Example 1, the only difference is that the diameter of the drop head is changed to 3 mm. Other operations and parameters are the same as those in Example 1. The average diameter of the prepared capsules is 3.5 mm, the water content increases, the average water content is 87%, and the production yield is 98%.

[0071] Example 5

[0072] Compared with Example 1, the only difference is that the properties of ethylene-vinyl acetate copolymer are changed, for example, the ethylene-vinyl acetate copolymer (Yu Cheng Plastic Co., Ltd., viscosity 200 mpa·s) is used. Other parameters and operations are the same as those in Example 1.

[0073] The roundness of the prepared capsules and the uniformity of the wall thickness decrease compared with Example 1, the average diameter is 3.3 mm, the average water content is 82%, and the production yield is 96%.

[0074] Example 6

[0075] Compared with Example 1, the only difference is that the properties of bisphenol A epoxy acrylate resin are changed, for example, bisphenol A epoxy acrylate resin (Jiangsu Sanmu Chemical Co., Ltd., viscosity 200 mpa·s, epoxy value 0.44) is used. Other operations and parameters are the same as those in Example 1.

[0076] The capsule roundness and wall thickness uniformity of this embodiment are not as good as those of Example 1, and the average strength after photocuring is 8.9 N, the average diameter is 3.35 mm, the average water content is 84.3%, and the production yield is 95%.

[0077] Comparative Example 1

[0078] Compared with Example 1, the only difference is that only one kind of bisphenol A epoxy acrylate resin is used, that is, the amount of bisphenol A epoxy acrylate resin is 90 g, and the amount of ethylene-vinyl acetate copolymer is 0 g; other parameters are the same as those in Example 1.

[0079] It is not possible to uniformly wrap water.

[0080] Comparative Example 2

[0081] Compared with Example 1, the only difference is that the ethylene-vinyl acetate copolymer required by the application is not used, that is, in this comparative example, the ethylene-vinyl acetate copolymer (Yu Cheng Plastic Co., Ltd., softening point 80℃, viscosity 300 mpa·s) is not used, and other steps and parameters are the same as those in Example 1.

[0082] It is not possible to produce capsules with regular shape and good roundness, and the production yield is less than 50%.

[0083] Comparative Example 3

[0084] Compared with Example 1, the only difference is that the ethylene-vinyl acetate copolymer required by the application is not used, that is, in this comparative example, the ethylene-vinyl acetate copolymer (Yu Cheng Plastic Co., Ltd., softening point 80℃, viscosity 50 mpa·s) is not used, and other steps and parameters are the same as those in Example 1.

[0085] This comparative example changes the viscosity of the ethylene-vinyl acetate copolymer compared with Example 1. When the viscosity of the ethylene-vinyl acetate copolymer is 50 mpa·s, it is difficult to produce capsules with uniform wall material wrapping the aqueous solution, and the production yield is low, only 76%.

[0086] Comparative Example 4

[0087] Compared with Example 1, the only difference is that no antioxidant is added, and other steps and parameters are the same as those in Example 1. This comparative example does not add an antioxidant compared with Example 1, and its water retention performance is poorer than that of Example 1 after six months of storage, and its water retention rate is only 75%.

[0088] Comparative Example 5

[0089] Compared with Example 1, the only difference is that no photoinitiator is added, and other steps and parameters are the same as those in Example 1.

[0090] The comparative example 1 does not add a photoinitiator, and the prepared burst ball has poor strength, and the strength after photoinitiation is 2.8 N.

[0091] Comparative example 6

[0092] Compared with example 1, the only difference is that the amount of bisphenol A epoxy acrylate resin (same as example 1) and ethylene-vinyl acetate copolymer (same as example 1) is improved, and the steps are as follows:

[0093] Take 50 g of bisphenol A epoxy acrylate resin (same as example 1), 50 g of ethylene-vinyl acetate copolymer (same as example 1), 3 g of photoinitiator 184, 5 g of viscosity regulator paraffin, and 2 g of antioxidant 1010 into a melting kettle, and raise the temperature to 70-85°C. The kettle is melted in the dark for 1-2 h, then the melted liquid is treated by ultrasonic to remove bubbles to obtain a light yellow transparent viscous liquid, and finally it is transferred into a incubator for standby. Start the DWJ-2000S full-automatic drop pill machine, raise the temperature of the glue tank (wall material) to 80°C and keep it warm, raise the temperature of the material tank (core material) to 40°C and keep it warm, turn on the coaxial double needle drop head (diameter 2.5 mm) heater, control the temperature at about 80°C (±3°C, the same below) and keep it warm, turn on the glue pipeline heater, control the temperature at about 80°C and keep it warm. Turn on the solidification liquid circulating cooling system, reduce the temperature of the solidification liquid to 20°C, then turn on the stirring in the glue tank and the material tank, and adjust the speed to 100 r / min. After the temperature of each system rises to the required temperature and runs normally, the wall material solution transferred into the incubator is taken out and poured into the glue tank, the aqueous solution is poured into the material tank, and the glue and material liquids are raised to the set temperature before starting the preparation.

[0094] After everything is ready, start the glue pump and the material pump, and control the glue injection speed and the material liquid injection speed to 4:1, extrude and drop into the solidification liquid (ethanol: water = 100:6) through the coaxial double needle drop head. The capsule is quickly formed in the solidification liquid, and the formed capsule is then subjected to photocuring under the ultraviolet lamp.

[0095] Compared with example 1, the amount of bisphenol A epoxy acrylate resin and ethylene-vinyl acetate copolymer is changed in the comparative example 1. Under the condition of the ratio, the qualified rate of the produced burst ball is low, the production yield is 75%, and the obtained burst ball has poor water retention, and the water retention rate is only 80% after one month.

[0096] Comparative example 7

[0097] Compared with example 1, the only difference is that other hot melt adhesives are used to replace the ethylene-vinyl acetate copolymer, and the steps are as follows:

[0098] Take 15 g of bisphenol A epoxy acrylate resin (same as in Example 1), 75 g of polyamide hot melt adhesive, 3 g of photoinitiator 184, 5 g of viscosity modifier paraffin, and 2 g of antioxidant 1010 into a melting kettle, raise the temperature to 70-85°C, melt in the kettle for 1-2 h in the dark, then remove the bubbles from the melted liquid by ultrasonic treatment to obtain a light yellow transparent viscous liquid, and finally transfer it into a incubator for standby. Start the DWJ-2000S full-automatic drop pill machine, raise the temperature of the glue tank (wall material) to 80°C and keep it warm, raise the temperature of the material tank (core material) to 40°C and keep it warm, turn on the coaxial double-needle drop head (diameter 2.5 mm) heater and control the temperature at about 80°C (±3°C, the same below) and keep it warm, turn on the glue pipe heater and control the temperature at about 80°C and keep it warm. Turn on the solidification liquid circulation cooling system, reduce the temperature of the solidification liquid to 20°C, then turn on the stirring in the glue tank and the material tank and adjust the speed to 100 r / min. After the temperature of each system rises to the required temperature and runs normally, take out the wall material solution transferred into the incubator and pour it into the glue tank, pour the aqueous solution into the material tank, and start preparing when the glue and material liquids both rise to the set temperature.

[0099] After everything is ready, start the glue pump and the material pump, control the glue injection speed and the material liquid injection speed to 4:1, and extrude and drop into the solidification liquid (ethanol:water = 100:6) through the coaxial double-needle drop head. The capsule is quickly formed in the solidification liquid, and the formed capsule is then photocured under the ultraviolet lamp.

[0100] In this comparative example, the type of hot melt adhesive is changed from ethylene-vinyl acetate copolymer to polyamide hot melt adhesive. The obtained blasting beads have poor water retention and low qualified rate, only 70%.

[0101] The present application is not limited to the above specific embodiments, as long as the wall material formula of the present application is used as the wall material, whether it is to regulate the composition of the wall material, improve the core material solution, use different means, or use different drop pill machine equipment to prepare the aqueous solution core material capsule, all of which are within the scope of the present application.

Claims

1. A polymeric encapsulant material for a water-soluble plug wrap capsule for a smoking article, characterised in that, The bisphenol A epoxy acrylic resin, ethylene-vinyl acetate copolymer, photoinitiator, viscosity modifier and antioxidant are included. The bisphenol A epoxy acrylic resin has a softening point of 64-76℃, a viscosity of 100-200 mpa·s and an epoxy value of 0.18-0.

46. The ethylene-vinyl acetate copolymer has a softening point of 70-100℃ and a viscosity of 150-200 mpa·s. The bisphenol A epoxy acrylic resin has a mass fraction of 15-25 parts; the ethylene-vinyl acetate copolymer has a mass fraction of 75-85 parts. The photoinitiator has a weight fraction of 2-4 parts; the viscosity modifier has a weight fraction of 4-6 parts; and the antioxidant has a weight fraction of 1-3 parts.

2. The polymeric wrapping material for a smoking article water-soluble core material capsule according to claim 1, characterized by, The photoinitiator is one or more of photoinitiator 184, 1173 and 907.

3. The high molecular coating material for the water-soluble core material capsule for cigarettes according to claim 1, characterized by, The viscosity modifier contains one or more of paraffin wax, microcrystalline wax and synthetic wax.

4. The high molecular wrapping material for the water-soluble core material capsule for cigarettes according to claim 1, characterized by, The antioxidant contains one or more of antioxidant 1010, 1076 and 186.

5. The high molecular wrapping material for the water-soluble core material capsule for cigarettes according to claim 1, characterized by, The viscosity of the wrapping material is between 50-300 m·Pas.

6. The high molecular wrapping material for the water-soluble core material capsule for cigarettes according to claim 1, characterized by, The melting temperature of the wrapping material is between 50-100℃.

7. A water soluble core material capsule for cigarettes, characterized by The wrapping material comprises a water-soluble core material and a wall material surrounding the water-soluble core material, wherein the wall material is the high-molecular wrapping material according to any one of claims 1-6.

8. The smoking article water-soluble core material capsule of claim 7, wherein, The water-soluble core material is water or an aqueous solution containing a water-soluble component.

9. The smoking article water-soluble core material capsule of claim 8, wherein, The water-soluble component is at least one of a water-soluble fragrance component, a water-soluble harm-reducing component and a wetting agent.

10. A process for the preparation of a water-soluble core material capsule for cigarettes according to any one of claims 7 to 9, characterized in that, A high-molecular wrapping material melt and a water-soluble core material solution are obtained, the water-soluble core material solution is wrapped by the high-molecular wrapping material melt to obtain a rough capsule, and then the rough capsule is solidified.

11. The method for preparing the water-soluble core material capsule for cigarettes according to claim 10, wherein: The high-molecular wrapping material melt is obtained by melting the components in the dark.

12. The method for preparing the water-soluble core material capsule for cigarettes according to claim 11, wherein: The solidification step comprises a solidification liquid solidification step and a subsequent photo-solidification step. The solidification liquid is at least one of an alcohol-water mixture, paraffin oil and methyl silicone oil. The photo-solidification is performed under ultraviolet lamp irradiation.

13. Use of a water-soluble core material capsule according to any one of claims 7 to 9, characterized in that It is used for preparing cigarettes.

14. Use of a water-soluble core material capsule for cigarettes according to claim 13, characterized in that, It is added to the end of a filter rod for preparing cigarettes.

15. A cigarette, characterized by The water-soluble core material capsule according to any one of claims 7-9 is added.

16. The cigarette of claim 15, wherein, The filter rod section is added with the water-soluble core material capsule.

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