Cigarette paper as well as preparation method and application thereof

Abstract

The invention discloses cigarette paper. A filling material of the cigarette paper is modified calcium carbonate. The modified calcium carbonate is obtained by modifying common calcium carbonate with starch. The invention further discloses a preparation method and application of the cigarette paper. According to the cigarette using the cigarette paper disclosed by the invention, the ash coagulation index can be obviously reduced on the premise that an ash coagulation agent is not added, and smoke components and sensory quality are not obviously changed; on the premise of not changing other design parameters, the cigarette paper can be directly used instead of conventional cigarette paper.

Description

Technical Field

[0001] The present invention belongs to the technical field of cigarettes, and specifically relates to a cigarette paper, a preparation method and a use thereof. Background Art

[0002] Twenty years ago, cigarette paper only played a major role in packaging tobacco, which was rolled on a 5,000-6,000 cigarette / min cigarette machine to make a solid and flawless cigarette stick. The core indicators of traditional cigarette paper are weight and air permeability, but nowadays cigarette paper must meet multiple functions, such as meeting the taste requirements while also providing exquisite appearance support for the brand image; developed countries such as the United States even require cigarette paper to have certain fireproof functions. It can be seen that cigarette paper is no longer just a role of wrapping tobacco and making cigarettes cylindrical, but it carries more functional roles.

[0003] In recent years, as consumers have been pursuing a higher quality of cigarettes, designers have added more elements to cigarette paper, and the ash-setting performance of cigarettes is one of them. Ash-setting performance refers to the columnar ash after burning cigarettes, including the ability of the external cigarette paper ash and the internal tobacco ash to maintain their cylindrical appearance without producing fly ash. Cigarettes with better ash-setting performance often give consumers a sense of superior quality, and can also reduce the probability of fires caused by residual sparks in the ash falling to the ground. Therefore, it has become one of the goals of major cigarette companies to improve their cigarette products.

[0004] At present, the common methods for improving the ash-setting property of cigarettes from the perspective of cigarette paper are: first, increasing the weight of cigarette paper, that is, increasing the amount of filler calcium carbonate, but this will bring about changes in the properties of cigarette paper such as air permeability, and ultimately affect various indicators of cigarettes. The most affected is the tar release of cigarettes. The increase of calcium carbonate will also increase the tar release of cigarettes; in addition, the actual retention rate of calcium carbonate on cigarette paper is also subject to many restrictions. When the amount is too large, it may also cause problems such as uneven dispersion of calcium carbonate. Second, increase the amount of sodium citrate in cigarette paper. As a common combustion regulator for cigarette paper, sodium citrate mainly functions to reduce the burning rate of cigarette paper and match the burning rate of cigarette paper with tobacco, thereby improving the ash-wrapping effect. The disadvantage of increasing the amount of sodium citrate is that it increases the number of puffs of cigarettes, which significantly increases the tar content. Third, add phosphate as an ash-setting agent. The effect of this method is the most significant, and the disadvantage is that the sensory quality of cigarette products will be greatly affected, and the whiteness of the cigarette ash column will be greatly reduced. In addition, the inventors have previously tried to improve the whiteness of the cigarette ash column by adding calcium acetate, see patent CN 2020113549686; however, this method has no obvious effect on improving the ash coagulation of cigarettes, and requires changes to the production process and equipment, resulting in a high investment cost.

[0005] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0006] The invention improves the adhesion between calcium carbonate and fiber, improves the retention rate of calcium carbonate on cigarette paper, reduces its influence on the air permeability of cigarette paper, and is used to improve the ash setting property of cigarettes by modifying the filler calcium carbonate used in the cigarette paper making process.

[0007] The ash condensation index described in the present invention uniformly refers to the value obtained by multiplying the ratio of the area of ​​the ash split mark part to the overall area of ​​the cigarette paper by 100. For example, if the area of ​​the ash split mark part accounts for 5.0% of the overall area, the ash condensation index is 5.0. In other words, the higher the ash condensation index, the worse the ash wrapping performance of the cigarette paper.

[0008] The technical solution of the present invention is as follows:

[0009] The first aspect of the present invention discloses a cigarette paper, wherein the filler of the cigarette paper is modified calcium carbonate.

[0010] Preferably, the modified calcium carbonate is obtained by modifying ordinary calcium carbonate using starch.

[0011] Preferably, the common calcium carbonate is spindle-shaped with a particle size of 2-4 μm.

[0012] The second aspect of the present invention discloses a method for preparing the cigarette paper, comprising the following steps:

[0013] (1) preparing starch into a solution, and then gelatinizing it at a certain temperature to obtain a starch gelatinized solution;

[0014] (2) ordinary calcium carbonate and water are mixed into a calcium carbonate suspension at a ratio of 1:10; the ordinary calcium carbonate is spindle-shaped and has a particle size of 2-4 μm;

[0015] (3) adding the calcium carbonate suspension obtained in step (2) to the starch gelatinization solution obtained in step (1), adjusting the pH value to be alkaline, and continuing to heat for a period of time to obtain a mixed solution;

[0016] (4) aging the mixed solution obtained in step (3) for a period of time, adjusting the pH value to neutral, and standing to separate the layers;

[0017] (5) removing the supernatant, adding water to the original volume, mixing and letting stand, removing the supernatant again, adding water to the original volume, mixing and letting stand, repeating at least three times, and obtaining the modified calcium carbonate; the purpose of repeatedly removing the supernatant by layers and then adding water is to remove the unreacted starch in the system and the amount of sodium chloride produced due to pH adjustment, thereby reducing their impact on the sensory perception of subsequent cigarette paper.

[0018] (6) The modified calcium carbonate is used for paper preparation and filling, that is, the cigarette paper is obtained. In the paper preparation process, the modified calcium carbonate is adjusted to the concentration required for papermaking and added normally in the papermaking process without changing the normal process conditions and sequence, but no more ash setting agent (generally phosphate or pyrophosphate) is added.

[0019] Preferably, the starch in step (1) is plant starch, and the plant starch is one of wheat starch, cassava starch, and potato starch; the concentration is 5wt% to 10wt%; and the gelatinization temperature is 80°C.

[0020] More preferably, the starch concentration is 6 wt% to 8 wt%; a low concentration starch solution is conducive to the smooth progress of the reaction and prevents calcium carbonate from agglomerating, but too low a concentration may result in poor modification effect.

[0021] Preferably, the alkaline pH value of step (3) is 10, the heating temperature is 70-80° C., and the heating time is 20-40 minutes.

[0022] Preferably, the aging time of the mixed solution in step (4) is more than 6 hours; in addition to ensuring that the modification reaction is completely carried out, it can also prevent the presence of unreacted acidic components in the raw calcium carbonate and affect subsequent papermaking, thereby homogenizing the raw calcium carbonate from different sources and ensuring the stability of the cigarette paper product.

[0023] The third aspect of the present invention discloses the use of the cigarette paper for improving the ash condensation of cigarettes, which can reduce the ash condensation index by 5-9 units without affecting the sensory quality and the release of smoke components.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The ash index of cigarettes made with the cigarette paper of the present invention is significantly improved. The ash index of cigarettes made with the cigarette paper of the present invention is tested according to the standard method. Under the same other conditions, the ash index of cigarettes made with the cigarette paper of the present invention can be generally reduced by 5-9 units compared with that of cigarette paper made of ordinary calcium carbonate, without affecting the sensory quality and the release of smoke components.

[0026] 2. The physical indexes of cigarettes using the cigarette paper of the present invention do not change significantly. Since the amount of starch added is relatively small and the modified calcium carbonate is repeatedly washed, the physical indexes of the cigarette paper and cigarettes produced do not change significantly, and they can be directly replaced in industrial products; the ash index can be significantly reduced without adding an ash-setting agent, and the smoke composition and sensory quality do not change significantly; and the cigarette paper smaller than conventional cigarette paper can be directly replaced without changing other design parameters.

[0027] 3. The smoke composition and sensory quality of cigarettes using the cigarette paper of the present invention are basically unchanged. Through standard method testing and sensory evaluation, it is found that the smoke composition and sensory quality of cigarettes using the cigarette paper of the present invention are not significantly changed, and the test data are basically within the allowable error range. This shows that the cigarette paper of the present invention can directly replace the existing cigarette paper without the need to adjust other design parameters.

[0028] 4. The modified calcium carbonate used in the cigarette paper of the present invention is modified on the basis of the finished product of ordinary calcium carbonate (spindle-shaped, with a particle size of 2-4 μm) for conventional cigarette paper, which has no effect on the production of calcium carbonate and the subsequent cigarette paper production process. It is simple and easy to operate with low investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of the production process of the cigarette paper of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below through specific embodiments, but this should not be construed as limiting the scope of the present invention to the following examples. Various substitutions and changes made according to common technical knowledge and customary means in the art without departing from the above-mentioned method concept of the present invention should be included in the scope of the present invention.

[0031] The entire manufacturing process of the cigarette paper of the present invention is shown in the attached figure. Figure 1 In addition, the tar release in the examples is the value obtained by the standard testing method of the tobacco industry.

[0032] The cigarette paper of the present invention comprises a filler of modified calcium carbonate; the modified calcium carbonate is obtained by modifying ordinary calcium carbonate with starch.

[0033] The method for preparing cigarette paper of the present invention comprises the following steps:

[0034] (1) preparing starch into a solution, and then gelatinizing at a certain temperature to obtain a starch gelatinized solution; the starch is plant starch, and the plant starch is one of wheat starch, cassava starch, and potato starch; the concentration is 5wt% to 10wt%; the gelatinization temperature is 80°C; the starch concentration is 6wt% to 8wt%; a low-concentration starch solution is conducive to the smooth progress of the reaction and prevents calcium carbonate from agglomerating, but too low a concentration may result in a poor modification effect;

[0035] (2) preparing a calcium carbonate suspension by mixing calcium carbonate and water in a ratio of 1:10; the calcium carbonate is spindle-shaped and has a particle size of 2-4 μm;

[0036] (3) adding the calcium carbonate suspension obtained in step (2) to the starch gelatinization solution obtained in step (1), adjusting the pH value to alkaline 10, and continuing heating for a period of time to obtain a mixed solution; the heating temperature is 70 to 80° C., and the time is 20 to 40 minutes;

[0037] (4) aging the mixed solution obtained in step (3) for a period of time, then adjusting the pH value to neutral, and standing to separate the layers; the mixed solution is aged for a period of more than 6 hours; in addition to ensuring that the modification reaction is completely carried out, it can also prevent the presence of unreacted acidic components in the raw calcium carbonate, which affects the subsequent papermaking, thereby homogenizing the raw calcium carbonate from different sources and ensuring the stability of the cigarette paper product;

[0038] (5) removing the supernatant, adding water to the original volume, mixing and letting stand, removing the supernatant again, adding water to the original volume, mixing and letting stand, repeating at least three times, and obtaining the modified calcium carbonate; the purpose of repeatedly removing the supernatant by layers and then adding water is to remove the unreacted starch in the system and the amount of sodium chloride produced due to pH adjustment, thereby reducing their impact on the sensory perception of subsequent cigarette paper.

[0039] (6) The modified calcium carbonate obtained is used for the preparation and filling of paper, that is, the cigarette paper is obtained. During the paper preparation process, the modified calcium carbonate is adjusted to the concentration required for papermaking and added normally in the papermaking process without changing the normal process conditions and sequence, but no ash setting agent (generally phosphate or pyrophosphate) is added. Cigarette paper is used to improve the ash setting property of cigarettes. The ash setting index can be reduced by 5-9 units without affecting the sensory quality and the release of smoke components.

[0040] Embodiment 1: As attached Figure 1 The plant starch used in this embodiment is wheat starch, the concentration of the starch solution is 5wt%, and the modification reaction time is 20min; the final produced cigarette paper is 32g / m 2 , 70CU.

[0041] Replaces regular 32g / m 2 , 70CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0042] Sample No. tuff index Tar release (mg) 1# 10.2 11.0 2# 5.6 11.0

[0043] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (gram weight and air permeability) produced by the method of the present invention is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0044] Embodiment 2: As attached Figure 1The cigarette paper manufacturing process shown in the figure. The plant starch used in this embodiment is cassava starch, the starch solution concentration is 10wt%, and the modification reaction time is 40min; the final cigarette paper produced is 30g / m 2 , 60CU.

[0045] Replaces regular 30g / m 2 , 60CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0046] Sample No. tuff index Tar release (mg) 1# 11.0 10.0 2# 5.5 10.0

[0047] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (weight and air permeability) produced by this method is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0048] Embodiment 3: As attached Figure 1 The plant starch used in this embodiment is potato starch, the concentration of the starch solution is 8wt%, and the modification reaction time is 30min; the final produced cigarette paper is 38g / m 2 , 50CU.

[0049] Replaces regular 38g / m 2 , 50CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0050] Sample No. tuff index Tar release (mg) 1# 10.2 11.0 2# 3.1 11.0

[0051] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (weight and air permeability) produced by this method is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0052] Embodiment 4: As attached Figure 1 The plant starch used in this embodiment is wheat starch, the concentration of the starch solution is 6wt%, and the modification reaction time is 30min; the final produced cigarette paper is 28g / m 2 , 70CU.

[0053] Replaces regular 28g / m 2 , 70CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0054] Sample No. tuff index Tar release (mg) 1# 11.0 10.0 2# 2.2 10.0

[0055] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (weight and air permeability) produced by this method is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0056] Embodiment 5: As attached Figure 1 The plant starch used in this example is cassava starch, the concentration of the starch solution is 7%, and the modification reaction time is 30 minutes; the final produced cigarette paper is 32g / m 2 , 50CU.

[0057] Replaces regular 32g / m 2 , 50CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0058] Sample No. tuff index Tar release (mg) 1# 10.1 11.0 2# 3.6 11.0

[0059] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (weight and air permeability) produced by this method is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0060] Embodiment 6: As attached Figure 1 The plant starch used in this example is potato starch, the starch solution concentration is 9%, and the modification reaction time is 30 minutes; the final produced cigarette paper is 36g / m 2 , 50CU.

[0061] Replaces regular 36g / m 2 , 50CU cigarette paper products were made into cigarettes (2#) and compared with the original cigarettes (1#). The results are as follows:

[0062] Sample No. tuff index Tar release (mg) 1# 11.7 11.0 2# 4.3 11.0

[0063] As can be seen from the table above, compared with the original cigarette sample, the ash index of the same standard cigarette paper (weight and air permeability) produced by this method is significantly improved, and the smoke release is basically unchanged. According to sensory evaluation, there is no significant difference in the sensory quality of the smoke of the two cigarettes, and they can be directly replaced.

[0064] The above description is only used to introduce the specific implementation methods of the present invention in detail, but the technical solution proposed by the present invention is not limited to the above method. Without departing from the basic principles of the present technology, equivalent modifications and changes made by those skilled in the art to the technology proposed by the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cigarette paper, characterized in that: The filler of the cigarette paper is modified calcium carbonate.

2. The cigarette paper according to claim 1, characterized in that: The modified calcium carbonate is obtained by modifying ordinary calcium carbonate using starch.

3. The cigarette paper according to claim 1, characterized in that: The ordinary calcium carbonate is spindle-shaped and has a particle size of 2-4 μm.

4. The method for preparing cigarette paper according to any one of claims 1 to 3, characterized in that: The following steps are involved: (1) preparing starch into a solution, and then gelatinizing it at a certain temperature to obtain a starch gelatinized solution; (2) preparing a calcium carbonate suspension by mixing ordinary calcium carbonate and water in a ratio of 1:10; (3) adding the calcium carbonate suspension obtained in step (2) to the starch gelatinization solution obtained in step (1), adjusting the pH value to be alkaline, and continuing to heat for a period of time to obtain a mixed solution; (4) aging the mixed solution obtained in step (3) for a period of time, adjusting the pH value to neutral, and standing to separate the layers; (5) removing the supernatant, adding water to the original volume, mixing and letting stand, removing the supernatant again, adding water to the original volume, mixing and letting stand, repeating at least three times, and obtaining the modified calcium carbonate; (6) The modified calcium carbonate is used for preparing and filling paper, thus obtaining the cigarette paper.

5. The preparation method according to claim 4, characterized in that: The starch in step (1) is plant starch, which is one of wheat starch, cassava starch and potato starch; the concentration is 5wt% to 10wt%; and the gelatinization temperature is 80°C.

6. The preparation method according to claim 5, wherein the starch concentration is 6 wt% to 8 wt%.

7. The preparation method according to claim 4, characterized in that: The alkaline pH value of step (3) is 10, the heating temperature is 70-80° C., and the heating time is 20-40 minutes.

8. The preparation method according to claim 4, characterized in that: The mixed solution in step (4) is aged for more than 6 hours.

9. Use of the cigarette paper according to any one of claims 1 to 3 for improving the ash-setting property of cigarettes.

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