阅读说明：本技术 一种周向加热烟草卷烟芯材及加热烟草卷烟芯材的制备方法 (Circumferential heating tobacco cigarette core material and preparation method of heating tobacco cigarette core material ) 是由 周桂园 张文军 吴建霖 陈宇超 冯涛 魏明文 周俊 李锐 于 2021-01-08 设计创作，主要内容包括：本发明公开了一种周向加热烟草卷烟芯材及加热烟草卷烟芯材的制备方法,以超细烟草粉体造纸抄造成型工艺获得片基；片基经涂布工艺涂布后获得涂布样；涂布样经防吸湿处理、干燥、分切、切丝后制备得到周向加热烟草卷烟芯材。该方法解决了采用传统造纸法再造烟叶工艺生产周向加热烟草卷烟芯材涂布率低、热水可溶物含量低、提升涂布率后产品结块、致密性差、导热性能差、发烟效果差、易吸潮等问题。所制备得到的周向加热烟草卷烟芯材热水可溶物含量可根据需求在42％-55％范围内进行调整,同时在感官抽吸品质上具有烟气浓度高、香气量足、烟雾释放稳定等优点。(The invention discloses a circumferential heating tobacco cigarette core material and a preparation method of the heating tobacco cigarette core material, and a sheet base is obtained by a papermaking and papermaking forming process of superfine tobacco powder; coating the film base by a coating process to obtain a coating sample; and (3) preparing the circumferential heating tobacco cigarette core material by the coating sample through moisture absorption prevention treatment, drying, slitting and shredding. The method solves the problems of low coating rate, low content of hot water soluble substances, caking of the product after the coating rate is increased, poor compactness, poor heat conduction performance, poor smoking effect, easy moisture absorption and the like in the production of the circumferential heating tobacco cigarette core material by adopting the traditional paper-making reconstituted tobacco process. The hot water soluble content of the prepared core material of the circumferentially heated tobacco cigarette can be adjusted within the range of 42-55% according to the requirement, and meanwhile, the circumferentially heated tobacco cigarette has the advantages of high smoke concentration, sufficient aroma, stable smoke release and the like on the sensory smoking quality.)

1. a circumferential 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, cationic starch, guar gum and polyvinyl alcohol.

2. The circumferentially heated tobacco cigarette core 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 ash rods, and the like.

3. The circumferentially heated tobacco cigarette core of claim 1, wherein the cellulosic fibers are one or more combinations of wood pulp, hemp pulp, cotton pulp, bamboo pulp, straw pulp.

4. The circumferentially heated tobacco cigarette core material 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, sodium carboxymethylcellulose and cacao butter.

5. The circumferentially heated tobacco cigarette core of claim 1, wherein the flavor-producing material is one or more of tobacco powder, alcohol extracts, water extracts, essential oils, absolute oils of tobacco and flavor-producing plants.

6. A preparation method of a tobacco cigarette core material by circumferential heating 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 paper-making reconstituted tobacco 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, slitting and shredding the coating sample prepared by spraying the moisture-proof agent on the surface of the step S8 to obtain the circumferential heating 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 according to claim 6, wherein the ultrafine tobacco powder and water are mixed in the step S2 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 according to claim 6, wherein the pulp is formed in step S4, the pulp having a Shore beating degree of 25 ° SR to 60 ° SR.

10. The heated tobacco cigarette core of claim 6, wherein the sheet base prepared by paper-making in step S6 has an oven dry basis weight of 35g/m²～60g/m²(ii) a The oven dry basis weight of the coating sample prepared in the step S7 is 70g/m²～135g/m²(ii) a The coating rate of the coating sample prepared in the step S7 is 42% -55%.

Technical Field

The invention relates to the technical field of cigarette cores, in particular to a circumferential tobacco cigarette heating core material and a preparation method of the tobacco cigarette heating 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 markets of developed countries and developing countries, 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 in well-spraying development. 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), iFuse glo 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 method 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 method has the advantages of low coating rate, low content of hot water soluble substances, caking of the product after the coating rate is increased, poor compactness, poor heat conductivity, poor smoking effect, easy moisture absorption and the like in the production of the circumferential heating tobacco cigarette core material by adopting the traditional paper-making method reconstituted tobacco process.

Disclosure of Invention

The invention aims to solve the problems of low coating rate, low content of hot water soluble substances, caking of products after the coating rate is improved, poor tightness, poor heat conductivity, poor smoking effect, easy moisture absorption and the like in the circumferential heating tobacco cigarette core material production by the traditional paper-making reconstituted tobacco process.

Provides a circumferential 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 circumferential 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, 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 ash rods and the like.

Further, the cellulose fiber is one or more of wood pulp (softwood pulp, hardwood pulp), hemp pulp (hemp pulp, flax 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, sodium carboxymethylcellulose (CMC) and 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 tobacco cigarette core material by circumferential heating, which comprises the following steps:

s1, crushing tobacco raw materials 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 finished;

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 sheet base prepared in the step S6 by adopting a paper-making reconstituted tobacco 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, slitting and shredding the coating sample prepared by spraying the moisture-proof agent on the surface of the step S8 to obtain the circumferential heating tobacco cigarette core material product.

Further, the ultra-fine tobacco powder in the step S1 is characterized by: the median particle size (D50) is 139.20 um-31.34 um, the content of particle size smaller than 20um is 16.64% -33.88%. 8. The heated tobacco cigarette core of claim 6, wherein the ultrafine tobacco powder and water are mixed in the step S2 in a weight ratio of 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 25⁰SR～60⁰SR。

Further, the oven dry basis weight of the sheet base prepared by paper making in the step S6 is 35g/m²～60g/m²(ii) a The oven dry basis weight of the coating sample prepared in the step S7 is 70g/m²～135g/m²(ii) a The coating rate of the coating sample prepared in the step S7 is 42% -55%.

The working principle is as follows:

the raw materials are crushed by crushing equipment to prepare superfine powder with the median diameter (D50) of 139.20 um-31.34 um and the particle size content of less than 20um of 16.64% -33.88%, water is added for mixing, then extracting solution and filter residue are obtained by separation, the filter residue extracted from the raw materials and auxiliary agents are added into pulp prepared by cellulose fiber pulping to prepare mixed pulp, and then the mixed pulp is formed by pulp making 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 content of 20um is between 16.64 percent and 33.88 percent, the tobacco cells accounting for 16.64 percent to 33.88 percent are broken, the degree of cell wall breaking 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 network-forming crosslinked microfibrils, and therefore, the polysaccharide molecules have strong hydrophilicity, are capable of binding many water molecules (i.e., hydration) and generate a certain viscosity, and the viscosity of the polysaccharide solution is not so high, but 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, chitosan, cationic starch, guar gum and polyvinyl alcohol, and is easy to adsorb on fibers to generate retention, filtration and enhancement effects and promote molecular extension due to the similarity of the molecular main chain structure of the auxiliary agent and the molecules of the superfine plant powder in the process of preparing the mixed slurry; in addition, tamarind polysaccharide gum is mixed with modified starch, chitosan, cationic starch, guar gum and polyvinyl alcohol under the accurate dosage and then is fully and uniformly mixed with mixed slurry, xyloglucan has the characteristic that reticular cross-linked microfibril can be fully and uniformly mixed with charged starch water-soluble substances due to branches and is easy to generate 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 tamarind polysaccharide gum effectively promotes the molecular extension in the mixed slurry, so that the molecular weight of the whole mixed slurry is moderate, excessive flocculation is avoided, and the uniformity of the 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 to ensure that materials used in the leaching and pulping processes are homogenized to the maximum extent, and superfine particle powder is fully mixed with cellulose fibers and then subjected to sheet-based paper making, so that 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 coated product has fine and smooth surface and good coating consistency, can realize the loading at the coating rate of more than 50 percent without the phenomena of sticking, hardening and more stable physical index fluctuation of the product. The circumferentially heated tobacco cigarette core material 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 amount, 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 raw materials to prepare powder paste, carrying out extraction and separation, 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 has uniform quantification and soft texture, and the finished product after coating has good consistency and good uniformity, and can be loaded at a coating rate of more than 50% without the occurrence of product adhesion, hardening and more stable physical index fluctuation.

(2) The base sheet is obtained by the paper making and forming process of the superfine tobacco powder, the absorptivity is high, and the loading capacity of the base sheet is high; high coating rate and high content of hot water soluble substance can be obtained after coating.

(3) The prepared core material has high coating rate, high content of hot water soluble substances, difficult agglomeration, good compactness, good heat conductivity, high smoking effect and difficult moisture absorption.

(4) The content of hot water soluble matters of the prepared circumferential heating tobacco cigarette core material can be adjusted within the range of 42-55% according to requirements, and the circumferential heating tobacco cigarette core material has the advantages of high smoke concentration, sufficient aroma amount and stable smoke release in sensory smoking quality.

Detailed Description

The purpose, technical solution and advantages of the present invention will become more apparent, and the present invention will be further described in detail with reference to the following embodiments. 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% which is smaller than 20 um;

(2) putting 85 parts by weight (absolute dry mass) of the superfine tobacco powder into an extraction tank, adding 4.6 times of water, extracting at 70 ℃ for 30 minutes, and filtering after extraction to obtain an extracting solution and filter residues;

(3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 12 parts by weight of smoke agent and 2 parts by weight of fragrant raw materials into the concentrated solution, fully stirring and uniformly mixing to prepare a coating liquid for later use;

(4) taking 15 parts by weight of softwood pulp, pulping according to the pulping process of the paper-making reconstituted tobacco, wherein 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 50g/m²；

(6) Coating the coating liquid on the base sheet according to the coating process of the paper-making reconstituted tobacco, wherein the coating rate is 50%, and the absolute dry ration of the coated reconstituted tobacco is controlled to be 100g/m²；

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

(8) and drying, slitting and shredding the coated sample to obtain a circumferential heating type tobacco cigarette core material product.

The circumferential heating tobacco cigarette core material prepared by the process has the following index difference with the international mainstream circumferential heating tobacco cigarette core material prepared by the conventional process: