CN111484766A

CN111484766A - Gloss oil with slow-release fragrance, cigarette tipping paper, filter element and smoking product

Info

Publication number: CN111484766A
Application number: CN202010348225.1A
Authority: CN
Inventors: 曹萼; 陈天乐; 郑丰; 徐善水; 郭曙光; 杨江涛; 王安; 杨立新; 王超; 赵荣艳; ***
Original assignee: Anhui Genuine Paper Packing Co ltd; China Tobacco Anhui Industrial Co Ltd
Current assignee: Anhui Genuine Paper Packing Co ltd; China Tobacco Anhui Industrial Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-08-04

Abstract

The invention relates to gloss oil with slow-release fragrance, which comprises resin and slow-release microcapsules dispersed in the resin, wherein the slow-release microcapsules comprise a wall material and a core material, the wall material is modified maltodextrin and modified cyclodextrin, the core material is water-soluble essence, and the gloss oil comprises the following raw materials in percentage by weight: 4-10% of water-soluble essence; 2-8% of modified maltodextrin; 2-8% of modified cyclodextrin; 5-10% of water-soluble resin; the balance of solvent; the modified maltodextrin is obtained by modifying a first hydrophilic group, the modified cyclodextrin is obtained by modifying a second hydrophilic group, the first hydrophilic group is one or more of phosphate, acetate and carboxymethyl, and the second hydrophilic group is one or more of alkyl, hydroxyalkyl and sulfohydrocarbyl. The invention also relates to tipping paper for cigarettes. The invention further relates to a preparation method of the gloss oil with the slow-release fragrance and the tipping paper for the cigarette. In yet another aspect, the invention also relates to a filter element and a smoking article.

Description

Gloss oil with slow-release fragrance, cigarette tipping paper, filter element and smoking product

Technical Field

The invention relates to the technical field of printing ink printing, in particular to gloss oil with slow-release fragrance, cigarette tipping paper, a filter element and a smoking product.

Background

The cigarette tipping paper is commonly called as cigarette tipping paper, has the function of being special paper for tipping the filter tip and the cigarette by glue, and is one of indispensable packing materials in cigarette materials. The traditional tipping paper for cigarettes mainly aims to connect a filter stick and a cigarette. In recent years, with the continuous optimization and adjustment of cigarette structures, in order to improve the smoking quality of cigarettes and meet the sensory requirements of consumers, cigarette tipping paper with fragrance is designed and produced, but most of components of essence are volatile organic compounds and are volatile in the direct use process, and some thermosensitive essence raw materials and photosensitive essence raw materials are unstable, so that the phenomena of poor stability of the fragrance and short fragrance retention time of the traditional cigarette tipping paper are caused.

Disclosure of Invention

Therefore, the gloss oil with slow-release fragrance, the cigarette tipping paper, the preparation methods of the gloss oil and the cigarette tipping paper, the filter element and the cigarette product are needed to be provided aiming at the phenomena that the stability of the fragrance of the essence on the cigarette tipping paper is poor and the fragrance retaining time is short.

The invention provides gloss oil with slow-release fragrance, which comprises resin and slow-release microcapsules dispersed in the resin, wherein the slow-release microcapsules comprise a wall material and a core material, the wall material is modified maltodextrin and modified cyclodextrin, the core material is water-soluble essence, and the gloss oil comprises the following raw materials in percentage by weight: 4-10% of water-soluble essence; 2-8% of modified maltodextrin; 2-8% of modified cyclodextrin; 5-10% of water-soluble resin; the balance of solvent; the modified maltodextrin is obtained by modifying a first hydrophilic group, the modified cyclodextrin is obtained by modifying a second hydrophilic group, the first hydrophilic group is one or more of phosphate, acetate and carboxymethyl, and the second hydrophilic group is one or more of alkyl, hydroxyalkyl and sulfohydrocarbyl.

In one embodiment, the mass ratio of the modified maltodextrin to the modified cyclodextrin is (1-3): 1.

in one embodiment, the mass ratio of the total mass of the modified maltodextrin and the modified cyclodextrin to the water-soluble essence is 4: (1-5).

In one embodiment, the water-soluble essence is one or more of osmanthus essence, rose essence, orchid essence and chrysanthemum essence.

In one embodiment, the gloss oil with the slow-release fragrance further comprises an emulsifier, and the emulsifier is tween-80 and/or tween-20.

In one embodiment, the emulsifiers are tween-80 and tween-20.

In one embodiment, the weight percentage of the emulsifier is 0.2% -2%.

In one embodiment, the solvent is water and edible ethanol.

The invention also provides a preparation method of the gloss oil with the slow-release fragrance, which comprises the following steps:

providing modified maltodextrin, modified cyclodextrin and water-soluble resin solution;

dissolving the modified maltodextrin and the modified cyclodextrin in a solvent to form a first solution;

dropwise adding water-soluble essence into the first solution, stirring and homogenizing to obtain a second solution containing microcapsules;

and uniformly mixing the second solution and the water-soluble resin solution.

In one embodiment, in the step of dropwise adding the water-soluble essence into the first solution, stirring and homogenizing to obtain the second solution, the stirring speed is 1000rpm to 2000rpm, the stirring time is 20min to 40min, the homogenizing speed is 10000rpm to 15000rpm, and the homogenizing time is 5min to 10 min.

The invention also provides tipping paper for cigarettes, which comprises a raw paper layer, a color printing layer, a water-based anti-falling coating layer and a fragrance layer which are sequentially stacked, wherein the fragrance layer comprises the gloss oil with the slow-release fragrance.

The invention further provides a preparation method of the tipping paper for the cigarette, which comprises the following steps:

providing a raw paper layer, a color printing layer and a water-based anti-dropping coating;

printing the gloss oil with the slow-release fragrance as defined in any one of claims 1 to 10 or the gloss oil with the slow-release fragrance as defined in claim 11 or 12 on the aqueous anti-release coating under the conditions of humidity of 50-60% and temperature of 23-25 ℃The gloss oil prepared by the preparation method of the gloss oil has the dosage of 0.6g/m²～0.8g/m²The printing speed is 100 m/min-120 m/min.

The invention also provides a filter element which comprises a filter rod and the cigarette tipping paper for packaging the filter rod.

According to a further aspect of the invention, there is also provided a smoking article comprising a wrapped rod of smoking material and said filter element.

The invention provides gloss oil with slow-release fragrance, which is formed by coating hydrophilic group modified maltodextrin and modified cyclodextrin serving as composite wall materials outside a water-soluble essence core material, wherein the maltodextrin modified by hydrophilic groups has strong anti-coagulation property and high dissolution speed and is matched with the modified cyclodextrin, so that the coating rate of the slow-release microcapsule is obviously improved, the film forming property and the transparency of the gloss oil prepared by compounding the slow-release microcapsule and the water-soluble resin are also obviously improved, and the gloss oil has high fragrance retention rate and lasting fragrance.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Other than as shown in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients, physical and chemical properties, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". For example, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.

Gloss oil with a slow-release flavor, tipping paper for cigarettes, and methods for preparing the same, filter elements, and smoking products will be discussed in detail below.

The embodiment of the invention provides gloss oil with slow-release fragrance, which comprises resin and slow-release microcapsules dispersed in the resin, wherein the slow-release microcapsules comprise a wall material and a core material, the wall material is modified maltodextrin and modified cyclodextrin, the core material is water-soluble essence, and the gloss oil comprises the following raw materials in percentage by weight: 4-10% of water-soluble essence; 2-8% of modified maltodextrin; 2-8% of modified cyclodextrin; 5-10% of water-soluble resin; the balance of solvent; the modified maltodextrin is obtained by modifying a first hydrophilic group, the modified cyclodextrin is obtained by modifying a second hydrophilic group, the first hydrophilic group is one or more of phosphate, acetate and carboxymethyl, and the second hydrophilic group is one or more of alkyl, hydroxyalkyl and sulfohydrocarbyl.

The cyclodextrin has amphipathy, is hydrophilic outside and lipophilic inside, can envelop molecules of various compounds, but has poor water solubility, particularly poor solubility in cold water, low coating rate of the cyclodextrin as a wall material of the microcapsule and high consumption of the wall material, causes high preparation cost, also influences the film forming property of the gloss oil, and causes that the gloss oil cannot form a film or the surface of the film is uneven after the film is formed. The inventor finds that the solubility of cyclodextrin modified by hydrophilic groups in cold water is greatly improved, and the coating rate of the cyclodextrin on the water-soluble essence core material can be greatly improved. The maltodextrin is a starch hydrolysate, forms a network structure through the action of hydrogen bonds between carbon chains, can enhance the stability of the core material and realize controllable release, and is used as a filling agent to be compounded with the modified cyclodextrin, so that the effect of supplementing and embedding can be achieved, and the fragrance retention rate is further enhanced. However, in the process of compounding maltodextrin with cyclodextrin, the cyclodextrin has a large cyclic structure, which prevents hydrogen bonds from forming between maltodextrin molecules, reduces the solubility of maltodextrin in a solution, causes turbidity when maltodextrin is easily precipitated, and reduces the transparency of gloss oil. According to the gloss oil with the slow-release fragrance, provided by the embodiment of the invention, hydrophilic group modified maltodextrin and modified cyclodextrin are used as composite wall materials to coat outside the water-soluble essence core material to form the slow-release microcapsule, the hydrophilic group modified maltodextrin is strong in anti-coagulation property and high in dissolving speed and is matched with the modified cyclodextrin, so that the coating rate of the slow-release microcapsule is obviously improved, the film forming property and transparency of the gloss oil prepared by compounding the slow-release microcapsule and the water-soluble resin are also obviously improved, and the gloss oil is high in fragrance retention rate and lasting in fragrance.

The maltodextrin can be prepared from starch-containing corn, rice, etc., or refined starch, such as corn starch, wheat starch, tapioca starch, etc. The maltodextrin is short dextrin with more than four glucose units, contains polysaccharide, tetrasaccharide or oligosaccharide with more than tetrasaccharide, and can also contain a small amount of maltose. The composition of the maltodextrin can be determined by gel filtration or high performance liquid chromatography.

The DE value of the maltodextrin is 4-10%. The DE value refers to the dextrose equivalent, i.e. the percentage of reducing sugars (in glucose) on the dry matter of the syrup. With increasing DE, the solubility and hygroscopicity of maltodextrin increased, while the viscosity decreased.

C in the glucose unit structure of the maltodextrin₂、C₃、C₆The hydroxyl has high reactivity and can react with an oxidation reagent, a crosslinking reagent, an esterification reagent and an etherification reagent to introduce new functional groups for modification. The modification method of the maltodextrin can be obtained by directly reacting the maltodextrin with a chemical reagentThe modified maltodextrin is used. Or the modified maltodextrin is obtained by hydrolyzing starch after the starch reacts with a chemical reagent.

Through the modification of the phosphate, the acetate and the carboxymethyl hydrophilic group, the water holding performance of the maltodextrin can be improved, water molecules capable of being combined and fixed are increased, certain viscosity is provided, the maltodextrin is also effective for oil dispersion in a homogenization stage, the emulsion stability of a solution can be improved, and the transparency of the material is improved.

In addition, the phosphate, the acetate and the modified maltodextrin modified by the carboxymethyl have higher fragrance retention rate and faster solubility than the original maltodextrin.

When the maltodextrin is assumed to have the maximum number of modifiable hydroxyl groups of 1, the modification degree of the maltodextrin with the first hydrophilic group is preferably not less than 0.02, more preferably not less than 0.04, further preferably not less than 0.06.

The maximum number of modifiable hydroxyl groups of the maltodextrin means the number of all hydroxyl groups the maltodextrin has before modification. In other words, the modification degree is the ratio of the number of modified hydroxyl groups to the number of all hydroxyl groups.

The modified maltodextrin has a modification degree of 0.02 or above, can be mixed with water at any ratio, and can be dissolved in 50% ethanol and methanol.

The cyclodextrin can be one or more of α -cyclodextrin, β -cyclodextrin and gamma-cyclodextrin α -cyclodextrin, β -cyclodextrin and gamma-cyclodextrin respectively contain 6, 7 and 8 glucose units, and considering the size of the molecular hole pore of α -cyclodextrin, β -cyclodextrin and gamma-cyclodextrin, the cyclodextrin is preferably β -cyclodextrin.

C in the glucose unit structure of the cyclodextrin₂、C₃The hydroxyl groups are subjected to chemical reactions such as esterification, etherification, oxidation, crosslinking and the like, and new functional groups are introduced to modify the hydroxyl groups.

An example of the alkyl group may be a methyl group (methylated).

Examples of the hydroxyalkyl group may be hydroxyethyl or hydroxypropyl.

Examples of the sulfoalkyl group may be sulfomethyl, sulfoethyl, sulfopropyl, sulfobutyl, and the examples are not limited thereto. Preferably, the sulfoalkyl group is sulfobutyl.

The unmodified cyclodextrin is easy to precipitate out of a solution to form particles after being compounded with resin, so that unevenness is caused after gloss oil film forming. Through the modification of the second hydrophilic group, the solubility of the cyclodextrin can be further increased, and therefore, the modified cyclodextrin can improve the film forming property of the gloss oil.

When the maximum number of modifiable hydroxyl groups that the cyclodextrin has is assumed to be 1, the degree of modification of the cyclodextrin with the first hydrophilic group is preferably not less than 0.02, more preferably not less than 0.04, and further preferably not less than 0.06.

The maximum number of modifiable hydroxyl groups of the cyclodextrin means the number of all hydroxyl groups the cyclodextrin has before modification. In other words, the modification degree is the ratio of the number of modified hydroxyl groups to the number of all hydroxyl groups.

The modified cyclodextrin with the modification degree of 0.02 or above can be mixed with water in any proportion, and can also be dissolved in 50% ethanol and methanol.

The mass ratio of the modified maltodextrin to the modified cyclodextrin can be (1-3): 1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, 1.8:1, 2:1, 2.25:1, 2.5:1, 2.7: 1.

The encapsulation rate of the modified cyclodextrin as a wall material is obviously higher than that of the traditional cyclodextrin, so the dosage of the modified cyclodextrin and the modified maltodextrin as a composite wall material is far lower than that of the traditional wall material. In one embodiment, the mass ratio of the total mass of the modified maltodextrin and the modified cyclodextrin to the water-soluble essence is 4: (1-5), and may be 2:1, 4:3, or 1: 1.

Examples of the water-soluble essence may be osmanthus essence, rose essence, orchid essence, and chrysanthemum essence, however, the example is not limited to these.

The solvent in the gloss oil with the slow-release fragrance can be water and/or an organic solvent, and the organic solvent can be one or more of alcohol, ester or ether. Preferably, the solvent is water and edible ethanol.

Further, the gloss oil with the slow-release fragrance can also comprise an emulsifier, and the emulsifier can be tween-80 and/or tween-20. Preferably, tween-80 and tween-20. The mass ratio of the tween-80 to the tween-20 can be 1: (1-2). The emulsifier can further improve the transparency of the gloss oil with the slow-release fragrance.

In one embodiment, the weight percentage of the emulsifier is 0.2% -2%.

The embodiment of the invention also provides a preparation method of the gloss oil with the slow-release fragrance, which comprises the following steps:

s10, providing modified maltodextrin, modified cyclodextrin and water-soluble resin solution;

s20, dissolving the modified maltodextrin and the modified cyclodextrin in a solvent to form a first solution;

s30, dropwise adding water-soluble essence into the first solution, stirring and homogenizing to obtain a second solution containing microcapsules;

and S40, uniformly mixing the second solution and the water-soluble resin solution.

The preparation method of the gloss oil with the slow-release fragrance provided by the embodiment of the invention is simple and easy to operate, and the gloss oil has the effect of slow-release fragrance and is stable and lasting in fragrance. Wherein the modified maltodextrin, the modified cyclodextrin and the water-soluble resin are commercially available or can be prepared by a preparation process known to those skilled in the art.

In step S20, the stirring speed is 1000rpm to 2000rpm, the stirring time is 20min to 40min, the homogenizing speed is 10000rpm to 15000rpm, and the homogenizing time is 5min to 10 min. The preparation process can further improve the wrapping rate of the modified maltodextrin and the modified cyclodextrin composite wall material to the water-soluble essence.

The solvent in step S20 is preferably water.

The solvent in the water-soluble resin solution is preferably a mixed solution of water and edible ethanol.

The embodiment of the invention also provides tipping paper for cigarettes, which comprises a raw paper layer, a color printing layer, a water-based anti-dropping coating and a fragrance layer which are sequentially laminated, wherein the fragrance layer comprises the gloss oil with the slow-release fragrance.

Further, the embodiment of the invention provides a preparation method of the tipping paper for the cigarette, which comprises the following steps:

s100, providing a raw paper layer, a color printing layer and a water-based anti-falling coating;

s200, printing the gloss oil with the slow-release fragrance according to any one of claims 1 to 10 or the gloss oil obtained by the preparation method of the gloss oil with the slow-release fragrance according to claim 11 or 12 on the water-based anti-release coating under the conditions that the humidity is 50-60% and the temperature is 23-25 ℃, wherein the dosage of the gloss oil is 0.6g/m²～0.8g/m²The printing speed is 100 m/min-120 m/min.

Wherein, the raw paper layer, the color printing layer and the aqueous anti-dropping coating layer are respectively provided, prepared or formed by the processes known in the art.

The invention also provides a filter element which comprises a filter rod and a packaging paper for packaging the filter rod, wherein the packaging paper is the tipping paper for the cigarette.

The primary functions of the filter element may include direct interception, inertial compaction, and diffusion precipitation.

The filter element may comprise a filter rod, the main component of which may be a sponge.

The filter element optionally comprises a filter rod of homogeneous filter material, a wrapper circumscribing the filter rod, circumferentially spaced longitudinally extending grooves on the filter rod, and a ventilation wrapper interconnecting the filter element to the tobacco rod, a plurality of grooves opening onto the tobacco rod side and continuously covering only a portion of the length of the filter element and thus not extending up to the mouth end of the filter element, the grooves being axially aligned with respect to the filter axis, ventilated air entering the axially extending grooves through overlying ventilation tipping paper, while all mouth-extending grooves are unventilated.

In some embodiments, the filter rods include an adsorbent material therein. Examples of suitable adsorbent materials include carbon. Advantageously, the adsorbent material is carbon and more advantageously activated carbon. The filter rod can reduce the smoke and tar in the mouth when smoking and suspended particles generated during combustion.

According to a further aspect of the invention, there is also provided a smoking article comprising a wrapped rod of smoking material and a filter element as described above.

The smoking material may be a tobacco-containing smoking material or a tobacco-free smoking material. The smoking material is advantageously a tobacco-containing smoking material, and the smoking material is more advantageously a tobacco material. Suitably, the tobacco material comprises tobacco stems, tobacco leaves and tobacco dust. An example of a tobacco material is one containing the following tobacco types: virginia or flue-cured tobacco, Burley tobacco, Oriental tobacco, reconstituted tobacco and tobacco stems. Preferably, the smoking material comprises a blend of tobacco materials.

The following are specific examples.

Example 1 preparation of gloss oil with extended fragrance Release

(1) Adding 4g of modified maltodextrin (acetic ester maltodextrin) and 4g of modified cyclodextrin (2-hydroxypropyl- β -cyclodextrin) into a stirring tank, adding 20g of distilled water, starting stirring at the stirring speed of 1000-1500 rpm to completely dissolve the modified maltodextrin and the modified cyclodextrin in the distilled water, and supplementing 20g of edible ethanol to form a wall material solution of the modified maltodextrin and the modified cyclodextrin.

(2) And (2) dropwise adding 4g of water-soluble essence (osmanthus essence) into the wall material solution of the modified maltodextrin and the modified cyclodextrin obtained in the step (1), continuously stirring and homogenizing at the stirring speed of 2000rpm for 40min, at the homogenizing speed of 15000rpm for 10min, so that the water-soluble essence is uniformly dispersed into the aqueous solution of the modified maltodextrin and the modified cyclodextrin, and thus obtaining the slow-release microcapsule essence solution.

(3) And (3) adding 0.2g of tween-80 and 0.2g of tween-20 into the slow-release microcapsule essence solution obtained in the step (2), and continuing stirring at the stirring speed of 1500rpm for 40 min.

(4) And (3) adding 5g of water-based acrylic resin into 20g of distilled water, stirring at the stirring speed of 1500rpm, supplementing 10g of edible ethanol after complete dissolution to obtain a water-based acrylic resin solution, and adding the slow-release microcapsule essence solution obtained in the step (3) into the water-based acrylic resin solution and stirring to obtain the slow-release fragrant gloss oil.

Example 2

The preparation method is basically the same as that of example 1, except that 8g of modified maltodextrin and 8g of modified cyclodextrin are added in the step (1), and the mass ratio of the total mass of the modified maltodextrin and the modified cyclodextrin to the water-soluble essence is 4:1 in the example.

Example 3

The preparation method is basically the same as that of example 1, except that 10g of water-soluble essence is added in the step (1), and the mass ratio of the total mass of the modified maltodextrin and the modified cyclodextrin to the water-soluble essence in the example is 4: 5.

Example 4

The preparation method was substantially the same as in example 1 except that 6g of modified maltodextrin and 2g of modified cyclodextrin were added in step (1).

Example 5

The preparation method is basically the same as that of example 1, except that the modified cyclodextrin in this example is sulfobutyl- β -cyclodextrin.

Example 6

The preparation method is basically the same as that of example 1, except that the modified cyclodextrin in this example is trimethyl- β -cyclodextrin.

Example 7

The preparation method is basically the same as that of example 1, except that the modified cyclodextrin in this example is 2-hydroxyethyl- β -cyclodextrin.

Example 8

The preparation method was substantially the same as in example 1 except that the modified maltodextrin in this example was hydroxymethyl maltodextrin.

Example 9

The preparation method was substantially the same as in example 1 except that the modified maltodextrin in this example was a carboxylate maltodextrin.

EXAMPLE 10 preparation of tipping paper for cigarettes

(1) And printing color ink on the tipping base paper (the base paper layer) by adopting a gravure printing process to form a color printing layer.

(2) And printing a layer of water-based anti-dropping ink on the color printing layer to form a water-based anti-dropping coating layer so as to prevent the color layer from being decolored and keep the color and the glossiness of the color layer.

(3) The gloss oil with the slow-release fragrance prepared in the above example 1 is printed on the surface of the water-based anti-release coating: printing on the water-based anti-release coating layer in an environment with the humidity of 60% and the temperature of 25 ℃, wherein the using amount is controlled to be 0.6g/m²And forming a fragrance layer at the machine speed of 120 m/min.

(4) And (4) carrying out gold stamping, punching, slitting and packaging on the tipping paper for the cigarettes after the step (3) is finished to obtain a finished tipping paper product for the cigarettes, wherein the number of the finished tipping paper product is sample 1.

Examples 11 to 17

The preparation method is the same as that in example 10, except that the gloss oil with the slow-release fragrance prepared in examples 2-9 is printed in step (3), and the obtained finished tipping paper for cigarettes is respectively numbered as samples 2, 3, 4, 5, 6, 7, 8 and 9 (sample 2 corresponds to the gloss oil with the slow-release fragrance prepared in printing example 2, sample 3 corresponds to the gloss oil with the slow-release fragrance prepared in printing example 3, and so on).

Comparative example 1

The procedure was substantially the same as in example 1, except that 4g of maltodextrin and 4g of β -cyclodextrin were added in step 1.

Comparative example 2

The preparation process was substantially the same as in example 1, except that 4g of modified maltodextrin (acetate maltodextrin) and 4g of β -cyclodextrin were added in step 1.

Comparative example 3

The preparation process was substantially the same as that of example 1 except that 4g of maltodextrin and 4g of modified cyclodextrin (2-hydroxypropyl- β -cyclodextrin) were added in step 1.

Comparative example 4

The preparation process was substantially the same as in example 1, except that 8g of β -cyclodextrin was added in step 1.

Comparative example 5

The preparation method was substantially the same as that of example 1 except that 2g of modified maltodextrin (acetate maltodextrin), 2g of modified cyclodextrin (2-hydroxypropyl- β -cyclodextrin), 2g of xanthan gum and 2g of pectin were added in step 1.

Comparative examples 6 to 10

The preparation method is the same as that of example 10, except that the gloss oil with the slow-release fragrance prepared in comparative examples 1-5 is printed, and the obtained cigarette tipping paper finished products are numbered as samples 10, 11, 12, 13 and 14 respectively (the sample 10 corresponds to the gloss oil with the slow-release fragrance prepared in comparative example 1, the sample 11 corresponds to the gloss oil with the slow-release fragrance prepared in comparative example 2, and the like)

Test experiments

And preparing cigarettes from the samples 1-14 under the same cigarette conditions. And randomly drawing 80 testers to perform sensory evaluation on the cigarette tipping paper (prepared for 3 months) of the samples 1-14 and the cigarettes prepared by the cigarette tipping paper, wherein the evaluation indexes comprise sensory evaluation on aroma amount (sufficient aroma, sufficient aroma and insufficient aroma), aroma persistence (long duration, long duration and short duration), aroma layer transparency (transparent, relatively transparent and turbid) and the like in the smoking process. The results are shown in table 1:

TABLE 1 sensory evaluation of tipping paper and cigarettes

As can be seen from Table 1, the cigarette tipping paper samples 1-9 are superior to cigarette tipping paper samples 10-14 in the transparency of the fragrance layer, the fragrance amount during smoking, the fragrance persistence and the fragrance layer retrogradation, which shows that the gloss oil with slow-release fragrance prepared in examples 1-9 has higher fragrance retention rate than the gloss oil prepared in comparative examples 1-5, the fragrance lasts for a long time, and the gloss oil film-forming property and the transparency are also superior.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The gloss oil with the slow-release fragrance is characterized by comprising resin and slow-release microcapsules dispersed in the resin, wherein the slow-release microcapsules comprise a wall material and a core material, the wall material is modified maltodextrin and modified cyclodextrin, the core material is water-soluble essence, and the gloss oil comprises the following raw materials in percentage by weight:

the modified maltodextrin is obtained by modifying a first hydrophilic group, the modified cyclodextrin is obtained by modifying a second hydrophilic group, the first hydrophilic group is one or more of phosphate, acetate and carboxymethyl, and the second hydrophilic group is one or more of alkyl, hydroxyalkyl and sulfohydrocarbyl.

2. The gloss oil with the slow-release fragrance according to claim 1, wherein the mass ratio of the modified maltodextrin to the modified cyclodextrin is (1-3): 1.

3. the gloss oil with slow-release fragrance according to claim 1, wherein the mass ratio of the total mass of the modified maltodextrin and the modified cyclodextrin to the water-soluble essence is 4: (1-5).

4. The gloss oil with slow-release fragrance according to claim 1, wherein the water-soluble essence is one or more of osmanthus essence, rose essence, orchid essence and chrysanthemum essence.

5. The gloss oil with the slow-release fragrance according to claim 1, further comprising an emulsifier, wherein the emulsifier is tween-80 and/or tween-20.

6. The gloss oil with a slow-release fragrance according to claim 7, wherein the emulsifier is present in an amount of 0.2 to 2% by weight.

7. The gloss oil with a slow-release fragrance according to claim 1, wherein the solvent is water and edible ethanol.

8. The tipping paper for the cigarette is characterized by comprising a raw paper layer, a color printing layer, a water-based anti-dropping coating layer and a fragrance layer which are sequentially laminated, wherein the fragrance layer comprises the gloss oil with slow-release fragrance.

9. A filter element comprising a filter rod and the cigarette tipping paper of claim 8 wrapped around the filter rod.

10. A smoking article comprising a wrapped rod of smoking material and the filter element of claim 9.