CN112586796A - Center heating tobacco cigarette core material and preparation method of heating tobacco cigarette core material - Google Patents

Abstract

The invention discloses a center heating tobacco cigarette core material and a preparation method of the center heating tobacco cigarette core material, wherein a sheet base with high absorptivity, high loading capacity, high density and high heat conductivity is obtained by a papermaking and papermaking forming process of superfine tobacco powder; coating the film base to obtain a coating sample with high coating rate and high hot water soluble content; and (3) performing moisture absorption prevention treatment on the surface of the coating sample, drying, rolling, calendering, slitting and rewinding to prepare the core material sub-roll of the central heating tobacco cigarette. The method solves the problems of low content of hot water soluble substances, poor compactness, rough surface, poor uniformity, poor heat conductivity, poor smoking effect, easy moisture absorption and the like of the tobacco core material heated by the traditional paper-making reconstituted tobacco process production center. The hot water soluble content of the prepared core material of the center heating tobacco cigarette is more than or equal to 50 percent, and the hot water soluble content of the core material of the center heating tobacco cigarette is higher than or equal to 50 percentThe thermal coefficient is more than or equal to 0.22W/mK, the smoothness is more than or equal to 1200S, and the density is more than or equal to 1.28g/cm³Meanwhile, the smoking quality has the advantages of high smoke concentration, sufficient fragrance, stable smoke release and the like.

Description

Center heating tobacco cigarette core material and preparation method of heating tobacco cigarette core material

Technical Field

The invention belongs to the technical field of preparation of heated tobacco cigarettes, and particularly relates to a center-heated tobacco cigarette core material and a preparation method of the center-heated tobacco cigarette core material.

Background

Under the background that the smoke control environment is increasingly severe, the sales volume of traditional tobacco products is stagnated or even reduced in some developed countries and developed Chinese markets, and along with the general improvement of health consciousness of people and the rapid development of intelligent microelectronic technology, the development of novel tobacco products is developed in a blowout manner. The non-traditional tobacco products on the market are mainly of a heating non-combustion type tobacco product, a smokeless tobacco product and the like. The research and development of the heating non-combustion cigarette serving as a main product in novel tobacco products are generally regarded by tobacco enterprises. In the research and development of novel tobacco products, workers in the tobacco industry at home and abroad have already done a great deal of work. In the last 70 th century, tobacco companies across countries began to make early-stage preparation work, and a large amount of capital was invested to carry out market research, product research and development and advertising. Currently, products with higher heat degree are sequentially appeared in overseas markets, mainly comprising iQOS of Feimu international (PMI), iFuseglo of Yinmei tobacco, Ploom Tech of Japanese tobacco and the like, and better sales volume and consumer conversion rate (the proportion of the number of people who heat non-combustible products to the total number of experience people is changed from traditional cigarette consumers) are obtained, so that the overseas market has good market prospect. However, although some domestic cigarette companies and scientific research institutions are interested in the research of such products, most of the cigarette companies and scientific research institutions focus on two aspects of basic theory and smoking set research and development, or stay in the laboratory research stage, do not form mature products, and form small batches of smoking sets and a large number of patents.

The tobacco core material heated by the traditional paper-making reconstituted tobacco process production center has the problems of low content of hot water soluble substances, poor compactness, rough surface, poor uniformity, poor heat conduction performance, poor smoking effect, easy moisture absorption and the like.

Disclosure of Invention

The invention aims to solve the problems of low content of hot water soluble substances, poor compactness, rough surface, poor uniformity, poor heat conductivity, poor smoking effect, easy moisture absorption and the like of the core material of the tobacco cigarette heated by the traditional paper-making reconstituted tobacco production center.

Provides a center heating tobacco cigarette core material and a preparation method of the heating tobacco cigarette core material.

In order to achieve the above objects and to overcome the above deficiencies of the prior art, the present invention is implemented as follows.

A center heating tobacco cigarette core material is prepared from the following raw materials in parts by weight:

wherein the auxiliary agent is one or more of tamarind polysaccharide gum (TSP), chitosan, sodium carboxymethyl cellulose (CMC), cationic starch, guar gum and polyvinyl alcohol.

Further, the superfine tobacco powder is one or a combination of a plurality of crushed tobacco raw materials, tobacco fragments, tobacco stems, tobacco powder and the like.

Further, the cellulose fiber is one or more of wood pulp (softwood pulp, hardwood pulp), hemp pulp (flax pulp, hemp pulp), cotton pulp, bamboo pulp and straw pulp.

Further, the smoke agent is one or more of propylene glycol, glycerol, mannitol, 1, 3-propylene glycol, sorbitol, xylitol and other multi-carbon fatty alcohols and multi-carbon fatty acids;

the moisture-proof agent is one or more of tamarind seed polysaccharide gum (TSP), beeswax, cacao butter.

Further, the flavor raw material is one or a combination of more of tobacco powder, alcohol extract, water extract, essential oil and absolute oil of the tobacco and the flavor plants.

The invention also aims to provide a preparation method of the core material of the center heating tobacco cigarette, which comprises the following steps:

s1, crushing a tobacco raw material by adopting crushing equipment to prepare superfine tobacco powder;

s2, mixing the superfine tobacco powder prepared in the step S1 with water for extraction, and filtering to obtain an extracting solution and filter residues after the extraction is finished;

s3, concentrating the extracting solution prepared in the step S2 to prepare a concentrated solution, adding the perfume raw material and the smoke agent into the concentrated solution, and fully and uniformly mixing to prepare a coating liquid for later use;

s4, mixing cellulose fibers with water, pulping according to a pulping process, and preparing cellulose fiber slurry for later use after pulping is completed;

s5, mixing the filter residue obtained in the step S2 with the cellulose fiber slurry obtained in the step S4, adding an auxiliary agent, and fully and uniformly mixing to obtain a mixed slurry;

s6, manufacturing the mixed slurry prepared in the step S5 according to a papermaking manufacturing and forming process to prepare a sheet base;

s7, coating the coating liquid prepared in the step S3 and the film base prepared in the step S6 by adopting a dipping coating process to prepare a coating sample;

s8, spraying a moisture-proof agent on the surface of the coating sample prepared in the step S7 by adopting a spraying process;

and S9, drying, rolling, calendaring, slitting and rewinding the coating sample prepared after the moisture-proof agent is sprayed on the surface of the step S8 to obtain the heated tobacco cigarette core material product.

Further, the ultra-fine tobacco powder in the step S1 is characterized by: the median particle diameter D50 is 139.20 um-31.34 um, the content of particle diameter less than 20um is 16.64% -33.88%.

Further, the mixing weight ratio of the superfine tobacco powder and the water in the step S2 is 1: 4.6-8, the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min.

Further, in the step S4, in the pulping process, the shoebur beating degree of the pulp is 20⁰SR～55⁰SR。

Further, the oven dry basis weight of the sheet base prepared by paper making in the step S6 is 30g/m²～80g/m²；

The oven dry basis weight of the coating sample prepared in the step S7 is 50g/m²～200g/m²；

And the rolling pressure in the step S9 is 10-30 Mpa.

The working principle of the invention is as follows:

crushing the raw materials by using crushing equipment to prepare superfine powder with median particle size D50 of 139.20 um-31.34 um and particle size content of less than 20um of 16.64% -33.88%, adding water, mixing, and separating to obtain an extracting solution and filter residue; adding filter residue extracted from raw materials and an auxiliary agent into the slurry prepared by the cellulose fiber pulping to prepare mixed slurry, and then manufacturing and forming the mixed slurry to obtain the film base.

Because the raw material is ultra-fine powder, if the average diameter of the plant cells is 20um (the grain diameter of most plant cells is between 10um and 30 um), when the grain diameter of less than 20um is between 16.64 percent and 33.88 percent, the content of the tobacco cells which accounts for 16.64 percent to 33.88 percent is broken, the degree of broken cell walls is different, and the prepared film base has different quantitative, thickness, bulk, air permeability, tensile strength, tensile rate, moisture absorption rate and other indexes which are important factors influencing the coating rate, smoothness, uniformity, physicochemical indexes, sensory quality and the like of finished products.

Tamarind gum, on the other hand, is a water-soluble xyloglucan, a water-soluble polymeric polysaccharide with glucose as the backbone and galactose and xylose as side chains. Xyloglucan is a polysaccharide present in the cell walls of higher plants, in particular the wall (main wall) fraction in which many plant cells grow. In addition, xyloglucan has a network-forming crosslinked microfibril, and therefore, the polysaccharide molecule has a strong hydrophilicity and is capable of binding many water molecules (i.e., hydration) and generating a certain viscosity, and the viscosity of the polysaccharide solution is not so high, but it is characterized by having a thickening effect in the presence of a sugar and inducing gelation. The auxiliary agent is one or a mixture of more of tamarind polysaccharide gum, modified starch, water-soluble high molecular compounds and the like, and in the process of preparing the mixed slurry, the molecular main chain structure of the auxiliary agent is similar to the molecules of the superfine plant powder, so that the auxiliary agent is easy to adsorb on fibers to generate retention, drainage and enhancement effects and promote the molecular extension; in addition, tamarind polysaccharide gum is mixed with chitosan, sodium carboxymethylcellulose (CMC), cationic starch, guar gum and polyvinyl alcohol under the accurate dosage and then is fully and uniformly mixed with the mixed slurry, xyloglucan has the characteristics that reticular cross-linked microfibers can be fully and uniformly mixed with charged starch water-soluble substances due to branches and can easily perform mutual complexation with negatively charged fibers and ultramicro plant powder, so that the whole auxiliary agent has the characteristic of uniform charge density, and the retention rate of the slurry is improved; finally, the addition agent containing the tamarind polysaccharide gum effectively promotes the extension of molecules in the mixed slurry, so that the molecular weight of the whole mixed slurry is moderate, excessive flocculation is avoided, and the uniformity of a film base is improved.

Finally, because the smoke agent forms a polymeric layer on the surface of the core material, the probability of the smoke agent combining with water molecules is increased due to the existence of surface tension, and the problem of moisture absorption of the core material is caused.

Based on the factors, single or diversified tobacco raw materials are subjected to superfine grinding, so that materials used in the leaching and pulping processes are homogenized to the maximum extent, superfine particle powder is fully mixed with cellulose fibers and then subjected to sheet-based paper making, the sheet base is uniform in quantitative quantity and soft in texture, and the specific surface area and the pore volume ratio of particles subjected to superfine grinding are greatly improved, so that the loading capacity is greatly improved; the coating has fine and smooth surface and good coating consistency, and can realize the loading of more than 55 percent of coating rate; after being dried by the spraying moisture-proof agent, a layer of relatively dry film is formed on the surface of the core material, and the moisture absorption of the core material can be effectively prevented. The core material of the center-heated tobacco cigarette prepared by the process has the advantages of high content of hot water soluble substances, good heat conductivity, high smoothness, high density, high smoke concentration, sufficient aroma, stable smoke release and the like in sensory smoking quality.

Has the advantages that:

(1) the preparation method comprises the steps of carrying out superfine pulverization and crushing treatment on plant raw materials to prepare powder paste, extracting and separating, preparing an extracting solution into a concentrated solution, preparing a coating solution, mixing powder slag and the slurry to prepare a mixed slurry, carrying out superfine pulverization treatment to break the walls of raw material cells in different proportions and to obtain different wall breaking degrees, wherein the prepared film base has different indexes such as quantification, thickness, bulk, air permeability, tensile strength, tensile rate, moisture absorption rate and the like, when the particle size content of 20 mu m is 16.64-33.88%, and the median diameter (D50) is 139.20 mu m-31.34 mu m, the prepared film base is uniform in quantification and soft in texture, the finished product after coating has good consistency and good uniformity, and can realize loading of more than 55% coating rate, and the fluctuation of physical indexes is more stable.

(2) The hot water soluble content of the core material of the prepared center heating tobacco cigarette is not less than 50 percent, the heat conductivity coefficient is not less than 0.22W/mK, the smoothness is not less than 1200S, and the density is not less than 1.28g/cm³Meanwhile, the smoking quality has the advantages of high smoke concentration, sufficient fragrance, stable smoke release and the like; the prepared core material has the advantages of high content of soluble substances, good compactness, smooth surface, good uniformity, good heat-conducting property, good smoking effect and difficult moisture absorption.

Drawings

FIG. 1 is a DTG curve of a heated tobacco core material prepared by a conventional process

FIG. 2 is a DTG curve of the heated tobacco core material prepared by the process of the invention

Reference numerals: a is a TG curve; b is a DTG curve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Examples

(1) Crushing the tobacco raw material by adopting crushing equipment to prepare superfine tobacco powder, wherein the median diameter (D50) of the superfine tobacco powder is 50.19um, and the content of the particle diameter is 25.26 percent which is less than 20 um;

(2) placing 80 parts by weight (oven-dried mass) of the superfine tobacco powder into an extraction tank, adding 4.6 times of water, extracting at 70 ℃ for 30 minutes, and filtering to obtain an extracting solution and filter residue after extraction;

(3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 20 parts by weight of smoke agent into the concentrated solution, and fully stirring and uniformly mixing 2 parts by weight of fragrant raw materials to prepare a coating liquid for later use;

(4) 20 parts of softwood pulp by weight is taken and pulped according to the pulping process of the paper-making reconstituted tobacco, and the Shoubel beating degree of the pulp is 50⁰SR；

(5) After pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of additive into the mixed slurry, fully stirring and uniformly mixing, and then adopting a paper-making method reconstituted tobacco sheet base paper-making forming process to prepare the sheet base, wherein the quantitative amount of the sheet base is 60g/m²；

(6) Coating the coating liquid on the base sheet according to the coating process of the paper-making reconstituted tobacco, and controlling the absolute dry ration of the coated reconstituted tobacco to be 130g/m²；

(7) Spraying 0.5 part by weight of the moisture-proof agent on the surface of the coating sample by adopting a spraying process;

(8) drying, rolling, calendaring, cutting and rewinding the coating sample to prepare a heated tobacco cigarette core material product, wherein the calendaring pressure is 20Mpa

The index difference between the core material of the center heating tobacco cigarette prepared by the process and the core material of the center heating tobacco cigarette prepared by the conventional paper-making reconstituted tobacco process is as follows.

The smoking effect of the core material of the center-heated tobacco cigarette prepared by the process and the core material of the center-heated tobacco cigarette prepared by the conventional paper-making reconstituted tobacco process is expressed by a thermal weight loss analysis result, as shown in fig. 1 and 2.

The smoking set takes 340 ℃ as a reference, and the quality loss of the core material prepared by the process is obviously improved. The core material prepared by the conventional process is 48.4%, the core material prepared by the process reaches 66.4%, and the equivalent ratio is increased by 37.2%; the core material prepared by the process has advanced severe mass loss from 277.2 ℃ of a control to 100.3 ℃ and 99.8 ℃. The temperature of the smoke agent generating aerosol to bring smoking feeling is advanced, and the amount of smoke generated after heating is more; the core material prepared by the process has peak values in each 100 ℃ interval, and the peak values in each interval represent that the smoke release tends to be more stable, so that the smoke release of the tobacco core material heated in each temperature section can be ensured.

Claims (10)

1. A center heating tobacco cigarette core material is prepared from the following raw materials in parts by weight:

wherein the auxiliary agent is one or more of tamarind polysaccharide gum, chitosan, sodium carboxymethylcellulose, cationic starch, guar gum and polyvinyl alcohol.

2. The core material of center-heated tobacco cigarette of claim 1, wherein the ultra-fine tobacco powder is one or a combination of comminuted tobacco leaf material, tobacco leaf fragments, tobacco stems, tobacco dust, and the like.

3. The core material of claim 1, wherein the cellulosic fibers are one or more combinations of wood pulp, hemp pulp, cotton pulp, bamboo pulp, and straw pulp.

4. The core material of center-heated tobacco cigarette of claim 1, wherein the smoking agent is one or more combinations of a multi-carbon fatty alcohol and a multi-carbon fatty acid such as propylene glycol, glycerin, mannitol, 1, 3-propylene glycol, sorbitol, xylitol, and the like;

the moisture-proof agent is one or more of tamarind seed polysaccharide gum, beeswax and cacao butter.

5. The core material of center-heated tobacco cigarette of claim 1, wherein the flavor material is one or more of a combination of tobacco powder, alcohol extract, water extract, essential oil, and absolute oil of tobacco and flavor plant.

6. A preparation method of a core material of a center heating tobacco cigarette is characterized by comprising the following steps:

s1, crushing a tobacco raw material by adopting crushing equipment to prepare superfine tobacco powder;

s2, mixing the superfine tobacco powder prepared in the step S1 with water for extraction, and filtering to obtain an extracting solution and filter residues after the extraction is finished;

s3, concentrating the extracting solution prepared in the step S2 to prepare a concentrated solution, adding the perfume raw material and the smoke agent into the concentrated solution, and fully and uniformly mixing to prepare a coating liquid for later use;

s4, mixing cellulose fibers with water, pulping according to a pulping process, and preparing cellulose fiber slurry for later use after pulping is completed;

s5, mixing the filter residue obtained in the step S2 with the cellulose fiber slurry obtained in the step S4, adding an auxiliary agent, and fully and uniformly mixing to obtain a mixed slurry;

s6, manufacturing the mixed slurry prepared in the step S5 according to a papermaking manufacturing and forming process to prepare a sheet base;

s7, coating the coating liquid prepared in the step S3 and the film base prepared in the step S6 by adopting a dipping coating process to prepare a coating sample;

s8, spraying a moisture-proof agent on the surface of the coating sample prepared in the step S7 by adopting a spraying process;

and S9, drying, rolling, calendaring, slitting and rewinding the coating sample prepared after the moisture-proof agent is sprayed on the surface of the step S8 to obtain the heated tobacco cigarette core material product.

7. The method of making a heated tobacco cigarette core according to claim 6 wherein the ultra-fine tobacco powder of step S1 is characterized by: the median particle diameter D50 is 139.20 um-31.34 um, the content of particle diameter less than 20um is 16.64% -33.88%.

8. The heated tobacco cigarette core of claim 8, wherein the ultrafine tobacco powder and water are mixed in a weight ratio of 1: 4.6-8, the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min.

9. The heated tobacco cigarette core of claim 6, wherein the slurry of step S4 is pulped with a pulp size having a Shore D freeness of 20⁰SR～55⁰SR。

10. The heated tobacco cigarette core according to claim 8,

the absolute dry basis weight of the sheet base prepared by paper making in the step S6 is 30g/m²～80g/m²；

The oven dry basis weight of the coating sample prepared in the step S7 is 50g/m²～200g/m²；

And the rolling pressure in the step S9 is 10-30 Mpa.

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