阅读说明：本技术 一种粉体成型涂布造纸工艺 (Powder forming coating papermaking process ) 是由 张文军 周桂园 魏明文 冯涛 梁毅 刘静 秦瑜 汤哲 于 2021-01-08 设计创作，主要内容包括：本发明提供了一种粉体成型涂布造纸工艺,制备超细粉末的原材料,并与水混合进行分离提取,得提取液和滤渣；将滤渣与浆料混合后,加入助剂进行充分混合均匀后得混合浆料,并基于所述混合浆料制备得片基；提取液进行浓缩制备得涂布液,将涂布液与所述片基涂布制得涂布样,涂布样经干燥后得到成品原纸。通过对原材料的超微粉化粉碎处理,能够有效提升原料的提取效率,最重要的是提升原料的比表面积及孔隙容积率进一步实现高涂布量加载,提升片基操造成型过程中纸张的均匀性,最终实现高品质原纸的生产加工。本工艺可广泛应用于重组烟草、卷烟纸、植物香片、特殊功能型纸张、雪茄茄套、纸质过滤嘴棒原纸、加热烟草卷烟芯材等多种产品生产加工领域。(The invention provides a powder forming and coating papermaking process, which comprises the steps of preparing a raw material of ultrafine powder, mixing the raw material with water, separating and extracting to obtain an extracting solution and filter residues; mixing the filter residue with the slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution to prepare coating liquid, coating the coating liquid and the film base to prepare a coating sample, and drying the coating sample to obtain the finished base paper. Through the ultrafine pulverization treatment of the raw materials, the extraction efficiency of the raw materials can be effectively improved, the most important is that the specific surface area and the pore volume rate of the raw materials are improved, the high coating weight loading is further realized, the uniformity of paper in the process of forming the base sheet operation is improved, and finally the production and processing of high-quality base paper are realized. The process can be widely applied to the production and processing fields of various products such as reconstituted tobacco, cigarette paper, plant fragrance sheets, special functional paper, cigar sleeves, paper filter tip base paper, heating tobacco and cigarette core materials and the like.)

1. The powder forming coating papermaking process is characterized by comprising the following steps:

pulverizing raw materials by pulverizing equipment to obtain superfine powder, mixing with water, and separating and extracting to obtain extractive solution and residue;

mixing the filter residue with the slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry;

concentrating the extracting solution to prepare coating liquid, coating the coating liquid and the film base to prepare a coating sample, and drying the coating sample to obtain a finished base paper product;

the auxiliary agent comprises: tamarind polysaccharide gum, modified starch and water-soluble high molecular compound.

2. The powder forming coating paper making process according to claim 1,

the modified starch comprises: one or more of oxidized starch, phosphate starch, hydroxyalkyl starch and acetate starch;

the water-soluble polymer compound includes: one or more of xanthan gum, casein and polyvinyl alcohol;

the amount of the tamarind seed polysaccharide gum is 0.3-0.6% of the mixed slurry by absolute dry mass.

3. The powder forming coating papermaking process according to claim 2, wherein the particle size of the ultrafine powder is as follows: the median particle size (D50) is 160.0 um-12.0 um, and the content of particle size smaller than 20um is between 12.0% and 55.0%.

4. The powder forming coating paper making process of claim 3, wherein the step of mixing the ultrafine powder with water for separation and extraction further comprises: the weight ratio of the superfine powder to the water is 1: (4-9), the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min.

5. The powder forming coating papermaking process according to any one of claims 1 to 4, wherein the pulp is prepared by mixing cellulose fibers with water and then pulping according to a papermaking pulping process, and the pulp is prepared after pulping;

the cellulose fiber is one or a combination of wood pulp, hemp pulp, cotton pulp, bamboo pulp, straw pulp and fluff pulp, and the pulp has a Shore beating degree of 20-90 SR in the pulping process.

6. The powder forming coating papermaking process according to claim 5, characterized in that the filter residue is mixed with cellulose fiber slurry, and the oven dry mass ratio of cellulose fiber to filter residue is 1: (2-6).

7. The powder forming coating papermaking process according to claim 1, wherein the finished base paper product comprises: reconstituted tobacco products, base paper suitable for cigar wrappers, center-heated tobacco cigarette core products, circumferential-heated tobacco cigarette core products, cigarette paper products containing tobacco elements, non-tobacco reconstituted tobacco products, heated tobacco cigarette paper products and base paper produced by cigarette filter tip products.

8. The powder forming coating papermaking process according to claim 1, wherein the extracting solution is concentrated to prepare a coating solution, and the coating solution is prepared by adding a fragrant raw material to the concentrated solution prepared by concentration.

9. The powder forming coating paper making process according to claim 1, wherein the raw material is one or more of a tobacco raw material, a natural plant raw material containing characteristic aroma or taste.

10. The powder forming coating papermaking process according to claim 1, wherein the addition proportion of the auxiliary agent is 0.2% -1% of the oven-dry mass of the slurry after the filter residue and the cellulose fiber slurry are mixed.

Technical Field

The invention relates to the technical field of coating papermaking processes, in particular to a powder forming coating papermaking process.

Background

The paper-making method reconstituted tobacco is characterized in that tobacco raw materials such as tobacco stems, tobacco fragments, tobacco powder and the like which are discarded in the redrying and cigarette production processes are utilized to prepare the reconstituted tobacco which is good in performance and similar to natural tobacco leaves through the processes of extraction, concentration, separation, pulping, papermaking, drying, slitting and the like, and the reconstituted tobacco is used as cigarette filler and is reused for cigarette production. With the development of the cigarette industry technology and the improvement of the smoking quality requirement of the tobacco products by consumers, the reconstituted tobacco by the paper-making method is subjected to multiple product quality upgrades, and the first generation is used as a filling material: the primary purpose is to recycle the waste generated in the tobacco processing engineering and improve the utilization rate of the tobacco raw material; the second generation is used as tobacco raw material: becomes an indispensable important raw material for Chinese style cigarettes. Plays an important role in improving the quality stability of the product. The third generation is used as a functional raw material for reducing harm and tar: with the improvement of the processing technology level, the reconstituted tobacco products have positive effects on the construction of Chinese cigarette products, the harm and tar reduction and the enhancement of the style characteristics of cigarettes in recent years due to good formula characteristics such as strong plasticity and manual regulation and control of physical and chemical indexes. The fourth generation was used as reconstituted tobacco: the development of the aroma carrying function, the recombination technology, the non-combustion aroma-generating technology, the material application field and the like of the reconstituted tobacco are more prominent. Due to diversification and heterogenization of the source of the paper-making reconstituted tobacco raw materials, the extraction and pulping processes are required to face the problems of insufficient extraction and uneven pulping, so that the base sheet manufactured by paper making shows the basic characteristics of rough surface, unstable transverse width quantification, poor uniformity, large physical index fluctuation, poor base sheet absorption performance and difficult loading of coating liquid, and the prepared finished product also shows the basic characteristics of paper-making reconstituted tobacco with rough surface, uneven coating, caking of the product after the coating rate is higher than 40 percent and large fluctuation of the processing resistance index.

Disclosure of Invention

In order to solve the defects of the prior art, the inventor provides a new process by research and development, single or diversified tobacco or non-tobacco raw materials are subjected to superfine grinding, materials used in the extraction and pulping processes are homogenized to the maximum extent, superfine particle powder is fully mixed with cellulose fibers according to a certain proportion and then subjected to sheet-based papermaking, and the sheet base is uniform in quantitative amount 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, can realize the loading at a coating rate of more than 55 percent without causing the adhesion, hardening and more stable physical index fluctuation of products. Specifically, the invention is realized by the following steps:

a powder forming coating papermaking process comprises the following steps: pulverizing raw materials by pulverizing equipment to obtain superfine powder, mixing with water, and separating and extracting to obtain extractive solution and residue; mixing the filter residue with the slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution to prepare coating liquid, coating the coating liquid and the film base to prepare a coating sample, and drying the coating sample to obtain the finished base paper.

Further, the auxiliary agent comprises: tamarind polysaccharide gum, modified starch and water-soluble high molecular compound; the modified starch comprises: one or more of oxidized starch, phosphate starch, hydroxyalkyl starch and acetate starch; the water-soluble polymer compound includes: xanthan gum, casein and polyvinyl alcohol.

Further, the particle size of the superfine powder is as follows: the median particle size (D50) is 160.0 um-12.0 um, and the content of particle size smaller than 20um is between 12.0% and 55.0%.

Further, the step of mixing the ultrafine powder with water for separation and extraction further comprises: the weight ratio of the superfine powder to the water is 1: (4-9), the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min.

Furthermore, the pulp is prepared by mixing cellulose fibers with water, pulping according to a papermaking pulping process, and preparing the cellulose fiber pulp after pulping.

Furthermore, the cellulose fiber is one or a combination of more of wood pulp, hemp pulp, cotton pulp, bamboo pulp, straw pulp and fluff pulp, and the beating degree of the pulp is 20-90 DEG SR in the pulping process.

Further, mixing the filter residue with cellulose fiber slurry, wherein the absolute dry mass ratio of the cellulose fibers to the filter residue is 1: (2-6);

further, the extracting solution is concentrated to prepare the coating liquid, and the coating liquid is prepared by adding the fragrant raw material into the concentrated solution prepared by concentration.

Further, the raw material is one or more of tobacco raw material, natural plant raw material containing characteristic fragrance or taste.

Furthermore, the addition proportion of the auxiliary agent is 0.2-1% of the oven-dry mass of the slurry after the filter residue and the cellulose fiber slurry are mixed.

The working principle of the invention is as follows: the raw materials are crushed by crushing equipment to prepare superfine powder with median diameter (D50) of 160.0-12.0 um and particle size content of less than 20um of 12.0-55.0 percent, water is added to the superfine powder and then separated to obtain extracting solution and filter residue, the extracting solution is concentrated to obtain coating liquid, and the filter residue is mixed with the slurry additive to obtain mixed slurry. 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 12.0 percent and 55.0 percent, the tobacco cells accounting for 12.0 percent to 55.0 percent are broken, the broken degree of the cells is different, and the prepared film base has different indexes such as quantification, thickness, bulk, air permeability, tensile strength, tensile rate, moisture absorption rate and the like, 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 that of cellulose molecules, so that the auxiliary agent is easy to adsorb on fibers to generate retention, drainage and enhancement effects and promote molecular extension; in addition, the tamarind polysaccharide gum is mixed with the modified starch and the water-soluble high molecular compound under the accurate dosage and then is fully and uniformly mixed with the mixed slurry, the xyloglucan has the characteristics that reticular cross-linked microfibers can be fully and uniformly mixed with the starch water-soluble substances with charges due to branches, and the xyloglucan is easy to mutually complex with fibers with negative charges and ultramicro tobacco 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.

Based on the factors, single or diversified tobacco or non-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 according to a certain proportion and then subjected to sheet-based paper making, the sheet base is quantitative and uniform, the texture is soft, 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, can realize the loading at a coating rate of more than 55 percent without causing the adhesion, hardening and more stable physical index fluctuation of products. The finished base paper prepared by the process can be widely applied to the production and processing of products in various fields such as reconstituted tobacco, cigarette paper, plant fragrance sheets, special functional paper, cigar sleeves, paper filter tip base paper, production of heating tobacco cigarette core materials and the like according to different treatment forms of subsequent products.

Compared with the prior art, the invention has the following beneficial effects: the preparation method comprises the steps of micronizing raw materials to prepare powder paste, extracting and separating, preparing an extracting solution into a concentrated solution to prepare a coating solution, mixing powder slag and slurry to prepare mixed slurry, breaking the walls of raw material cells in different proportions by ultramicro treatment, and ensuring 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 12.0-55.0 percent and the median diameter (D50) is 160.0-12.0 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 realize the loading of more than 55 percent of coating rate without the occurrence of product adhesion, hardening and more stable physical index fluctuation. The production operation has strong controllability, and finally, the high-quality finished base paper is realized. As can be seen from the comparison of FIG. 2 and FIG. 3, the film base prepared by the conventional process has interlaced single fibers, obvious fiber pores, rough surface and granular substances attached; the film base prepared by the process has no obvious fiber pores, compact tissue structure and smooth and compact surface.

Drawings

FIG. 1 is a flow chart of the steps of a powder forming coating paper maker according to the present invention.

Fig. 2 is a comparison of a film base object, wherein the left side is the film base prepared by the conventional process, and the right side is the film base prepared by the process of the invention.

FIG. 3 is a comparative scanning electron microscope image of a film substrate real object, wherein the left side is the film substrate prepared by the conventional process, and the right side is the film substrate prepared by the process of the present invention.

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.

Example 1:

a powder forming coating papermaking process comprises the following steps: pulverizing raw materials by pulverizing equipment to obtain superfine powder, mixing with water, and separating and extracting to obtain extractive solution and residue; mixing the filter residue with the slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution, adding a fragrant raw material into the concentrated solution to prepare the coating liquid, coating the coating liquid and the film base to prepare a coating sample, and drying the coating sample to obtain a finished product of base paper. The raw material is one or more of tobacco raw material, natural plant material containing characteristic fragrance or taste.

Wherein: the auxiliary agent comprises: tamarind polysaccharide gum, modified starch and water-soluble high molecular compound; the modified starch comprises: one or more of oxidized starch, phosphate starch, hydroxyalkyl starch and acetate starch; the water-soluble polymer compound includes: xanthan gum, casein and polyvinyl alcohol. The addition proportion of the auxiliary agent is 0.2-1% of the oven-dry mass of the slurry after the filter residue and the cellulose fiber slurry are mixed.

Preferably, the median particle size (D50) of the superfine powder is 160.0-12.0 um, and the content of particle size smaller than 20um is between 12.0-55.0%. Preferably, the step of mixing the micropowder with water for separation and extraction further comprises: the weight ratio of the superfine powder to the water is 1: (4-9), the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min.

Preferably, the pulp is prepared by mixing cellulose fibers with water and then pulping according to a papermaking pulping process, and the pulp is prepared after pulping.

Preferably, the cellulose fiber is one or more of wood pulp, hemp pulp, cotton pulp, bamboo pulp, straw pulp and fluff pulp, and the pulp has a Shore beating degree of 20-90 SR in the pulping process. Mixing the filter residue with cellulose fiber slurry, wherein the absolute dry mass ratio of the cellulose fibers to the filter residue is 1: (2-6);

experimental example 1: influence of powder paper making formation of different particle sizes on physical indexes of film base

Experimental example 2: influence of different auxiliary agents and use ratios on physical indexes of film base

Wherein: TSP is tamarind polysaccharide gum, PT01 is oxidized starch, PT02 is xanthan gum, PT03 is polyvinyl alcohol, and PT04 is hydroxyalkyl starch.

Example 2 preparation of reconstituted tobacco

Crushing a tobacco raw material by using crushing equipment to prepare superfine tobacco powder, wherein the median diameter (D50) of the superfine tobacco powder is 53.93um, the content of the particle size is less than 20um and is 22.61%, putting 870kg (absolute dry mass) of the superfine tobacco powder into an extraction tank, adding 4000kg of water into the extraction tank, extracting at 70 ℃ for 30 minutes, filtering after extraction to obtain an extracting solution and filter residue, concentrating the extracting solution to obtain a concentrated solution, adding essence and spice with the proportion of 1.0% of the absolute dry mass of the concentrated solution into the concentrated solution, and preparing a coating solution for later use;

taking 100kg of hemp pulp and 30 kg of wood pulp, pulping according to the pulping process of the paper-making reconstituted tobacco, wherein the Shoebuer beating degree of the pulp is 40 DEG SR, mixing the tobacco powder residue and the cellulose fiber pulp after pulping, adding tamarind seed polysaccharide glue solution with the absolute dry mass of 0.4% of the pulp into the mixed pulp, fully stirring and uniformly mixing, and then preparing the base sheet by adopting the paper-making reconstituted tobacco base sheet-making forming process, wherein the quantitative amount of the base sheet is 50g/m²；

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 110g/m²And drying and cutting to prepare the recombined tobacco suitable for the cigarette leaf group formula.

The index difference between the prepared recombinant tobacco sheet base and the reconstituted tobacco sheet base prepared by the conventional process is as follows

The index difference between the prepared recombined tobacco finished product and the reconstituted tobacco finished product prepared by the conventional process is as follows

The effect of the amount of tamarind polysaccharide gum used on the slurry retention and the physical properties of the chip base is as follows

Amount used (%)	Thickness (mm)	Tensile Strength (N/m)	Elongation (%)	Pulp retention improvement (%)
					0％	0.079	836.99	1.73	—
0.20％	0.084	959.02	1.78	7.84％
					0.40％	0.087	1136.20	2.10	11.54％
0.50％	0.085	1019.20	2.32	6.98％

Example 3: preparing cigar wrappers

(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 37.65um, and the content of the particle diameter is 34.39 percent, and is less than 20 um; (2) taking 70 parts by weight (oven-dried mass) of the superfine tobacco powder, placing in an extraction tank, adding 4 times of the superfine tobacco powderExtracting with water at 70 deg.C for 30 min, and filtering to obtain extractive solution and residue; (3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 3 parts by weight of glycerol, 3.5 parts by weight of potassium citrate and 0.7 part by weight of fragrant raw material into the concentrated solution, and preparing a coating liquid for later use; (4) taking 30 parts by weight of softwood pulp, pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 70 degrees SR; (5) mixing the tobacco powder residue and cellulose fiber slurry after pulping, adding 0.4 part by weight of tamarind seed polysaccharide glue solution auxiliary agent into the mixed slurry, stirring and mixing uniformly, and preparing the base sheet by adopting a paper-making reconstituted tobacco sheet base paper-making forming process, wherein the base sheet weight is 28g/m²(ii) a (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 40g/m²And drying, rolling and cutting to prepare the base paper suitable for the cigar sleeve.

The index difference between the film base prepared by the process and the film base prepared by the conventional process is as follows

The index difference between the base paper prepared by the process and the base paper prepared by the conventional process is as follows

Example 4: preparing center heating tobacco cigarette core material

1. The method comprises the following steps of (1) crushing the tobacco raw materials by adopting crushing equipment to prepare superfine tobacco powder, wherein the median diameter (D50) of the superfine tobacco powder is 74.68um and is less than 20um, and the particle size content is 23.78%; (2) placing 80 parts by weight (oven-dried mass) of the superfine tobacco powder in an extraction tank, adding 4 times of water, extracting at 70 ℃ for 30 minutes, and filtering to obtain an extracting solution and filter residue after extraction is finished; (3) the extractive solution is concentrated by vacuum distillationConcentrating to obtain a concentrated solution, adding 20 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 20 parts by weight of softwood pulp, pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 50 DEG SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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(ii) a (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(ii) a (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) and drying, rolling, calendaring, slitting and rewinding the coating sample to obtain the heated tobacco cigarette core material product.

2. The method comprises the following steps of (1) crushing the tobacco raw materials by using 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 size is 25.26% which is smaller 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) taking 20 parts by weight of softwood pulp, pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 50 DEG SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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(ii) a (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(ii) a (7) Spraying 0.5 part by weight of moisture-proof agent on the surface of the coating sample by adopting a spraying processA moisture resistant agent; (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 heating tobacco cigarette prepared by the process and the core material of the center heating tobacco cigarette prepared by the conventional process of paper-making reconstituted tobacco is expressed by a thermal weight loss analysis result,

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.

Example 5: preparation of circumferential heating tobacco cigarette core material

1. The method comprises the following steps of (1) crushing the tobacco raw materials by adopting crushing equipment to prepare superfine tobacco powder, wherein the median diameter (D50) of the superfine tobacco powder is 74.68um and is less than 20um, and the particle size content is 23.78%; (2) putting 85 parts by weight (absolute dry mass) of the superfine tobacco powder into an extraction tank, adding 4 times of water, extracting at 70 ℃ for 30 minutes, and filtering after extraction to obtain an extracting solution and filter residues; (3) concentrating the extractive solution by vacuum distillation to obtain concentrated solution, adding 12 weight parts of smoke agent and 2 weight parts of incense raw materialFully stirring and uniformly mixing to prepare coating liquid for later use; (4) taking 15 parts by weight of softwood pulp, pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 50 DEG SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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 ration of the sheet base is 50g/m²(ii) a (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 100g/m²(ii) a (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) and drying, slitting and shredding the coating sample to obtain a circumferential heating type tobacco cigarette core material product.

2. The method comprises the following steps of (1) crushing the tobacco raw materials by using 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 size 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 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 a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 50 DEG SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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 ration of the sheet base is 50g/m²(ii) a (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(ii) a (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) the coating sample is dried, cut and shredded to prepare the circumferential heating typeTobacco cigarette core products.

The index difference between the circumferential heating tobacco cigarette core material prepared by the process and the international mainstream circumferential heating tobacco cigarette core material prepared by the conventional process is as follows.

Example 6: preparing cigarette paper containing tobacco elements

(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 22.67um, and the particle size content is 44.83 percent and is less than 20 um; (2) taking 70 parts by weight (absolute dry mass) of the superfine tobacco powder, putting the superfine tobacco powder into an extraction tank, adding 4 times of water by weight, extracting for 30 minutes at 70 ℃, and filtering to obtain an extracting solution and filter residue after extraction is finished; (3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 2.5 parts by weight of combustion improver, 3 parts by weight of humectant, 10 parts by weight of calcium carbonate and 1 part by weight of fragrant raw material into the concentrated solution, fully stirring and uniformly mixing to prepare a coating liquid for later use; (4) taking 30 parts by weight of softwood pulp, and pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 75-degree SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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 ration of the sheet base is 25g/m²(ii) a (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 32g/m²(ii) a (7) And drying, rolling, calendaring, slitting and rewinding the coating sample to obtain the cigarette paper product containing the tobacco elements.

The effect of the amount of tamarind polysaccharide gum used on the slurry retention and the physical properties of the chip base is as follows:

amount used (%)	Thickness (mm)	Tensile Strength (N/m)	Elongation (%)	Pulp retention improvement (%)
					0％	0.047	986	2.57	—
0.20％	0.051	1022	2.76	7.93％
					0.40％	0.052	1096	2.85	13.61％
0.50％	0.052	1059	2.67	11.43％

Example 7: plant fragrant tablet for preparing cigarette leaf group

Preparing plant fragrant sheet for cigarette leaf group, pulverizing dried natural plant raw material by pulverizing equipment to obtain superfine plant powder, mixing with water, separating and extracting to obtain extractive solution and residue; mixing cellulose fibers with water, pulping according to a pulping process, preparing cellulose fiber slurry after pulping, mixing filter residues with the cellulose fiber slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution, adding the flavor raw materials and the humectant into the concentrated solution, fully and uniformly mixing to prepare a coating solution, coating the coating solution and the film base according to a paper-making reconstituted tobacco coating process to obtain a coating sample, and drying and cutting the coating sample to obtain the plant flavor sheet product for the cigarette leaf group. The superfine plant powder is characterized in that: the median particle size (D50) is 50.19 um-13.98 um, the content of the particle size smaller than 20um is 25.26-64.05%; the weight ratio of the superfine plant powder to the water is 1: (4.6-8), wherein the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min; the beating degree of the pulp in the pulping process is between 25 and 75 degrees SR; the absolute dry basis weight of the tablet base is 40g/m²～60g/m²(ii) a The oven dry basis weight of the coated sample is 50g/m²～130g/m²(ii) a The coating rate is 20% to 55%.

Example (c): (1) pulverizing sun-dried and core-removed mume fructus with pulverizing equipment to obtain superfine mume fructus powder with median diameter (D50) of 23.19um and particle size content of less than 20um of 45.86%; (2) putting 85 parts by weight (oven-dried mass) of the above superfine plum powder into an extraction tank, adding 4 times of water, extracting at 70 deg.C for 30 min, and filtering to obtain extractive solution and residue; (3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 3 parts by weight of humectant into the concentrated solution, fully stirring and uniformly mixing to prepare a coating liquid for later use; (4) taking 15 parts by weight of hemp pulp, and pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 45-degree SR; (5) pulping mume fructusMixing the powder slag and the cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent into the mixed slurry, fully stirring and uniformly mixing, and then preparing the base sheet by adopting a papermaking-method reconstituted tobacco base sheet-making forming process, wherein the quantitative amount of the base sheet is 50g/m²(ii) a (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 90g/m²(ii) a (7) And drying and cutting the prepared coating sample to obtain a non-tobacco reconstituted tobacco product.

Example 8: preparation of heating tobacco cigarette paper

Preparation of a heating tobacco cigarette paper: pulverizing raw materials by pulverizing equipment to obtain superfine powder, mixing with water, and separating and extracting to obtain extractive solution and residue; mixing cellulose fibers with water, pulping according to a pulping process, preparing cellulose fiber slurry after pulping, mixing filter residues with the cellulose fiber slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution, adding the perfume raw material, the humectant and the filler into the concentrated solution, fully and uniformly mixing to prepare a coating solution, preparing a coating sample by adopting a soaking-stagnation coating process on the coating solution and the film base, and drying, rolling, calendaring, slitting and rewinding the coating sample to prepare the heated tobacco cigarette paper product. The superfine tobacco powder is characterized in that: the median particle size (D50) is 34.49 um-13.98 um, the content of particle size smaller than 20um is 29.57% -64.05%; the weight ratio of the superfine tobacco powder to the water is 1: (4.6-8), wherein the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min; the slurry in the pulping process has a Shoebur beating degree of 55-90 degrees SR; the medium rolling pressure is 0-30 Mpa. The absolute dry basis weight of the tablet base was 20g/m²～30g/m²(ii) a The oven dry basis weight of the coated sample is 25g/m²～50g/m²。

Example (c): (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 22.67um, and the particle size content is 44.83 percent and is less than 20 um; (2) taking 70 parts by weight (oven-dried mass) of the superfine tobacco powder, and placing inAdding 4 times of water into the extraction tank, 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 5 parts by weight of humectant into the concentrated solution, and fully stirring and uniformly mixing 1 part by weight of fragrant raw material to prepare a coating liquid for later use; (4) taking 30 parts by weight of softwood pulp, and pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 75-degree SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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 ration of the sheet base is 25g/m²(ii) a (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 35g/m²(ii) a (7) And drying, rolling, calendaring, slitting and rewinding the coating sample to obtain the cigarette paper product containing the tobacco elements.

The physical index difference between the heated tobacco cigarette paper prepared by the process and certain domestic conventional heated tobacco cigarette paper is as follows.

The difference of the chemical indexes of the heated tobacco cigarette paper prepared by the process and a certain conventional domestic heated tobacco cigarette paper is as follows.

Example 9: preparing cigarette filter tip

Preparation of reconstituted tobacco applicable to paper filter rods: pulverizing tobacco raw materials by pulverizing equipment to obtain superfine powder, mixing with water, and separating and extracting to obtain extractive solution and residue; mixing cellulose fibers with water, pulping according to a pulping process, preparing cellulose fiber slurry after pulping, mixing filter residues with the cellulose fiber slurry, adding an auxiliary agent, fully and uniformly mixing to obtain mixed slurry, and preparing a film base based on the mixed slurry; concentrating the extracting solution, adding the fragrant raw materials and the humectant into the concentrated solution, fully and uniformly mixing to prepare a coating solution, preparing a coating sample from the coating solution and the film base by adopting a soaking-stagnation coating process, and drying, rolling, slitting and rewinding the coating sample to prepare the reconstituted tobacco product suitable for the paper filter tip rod.

The particle size of the superfine powder is as follows: the median particle size (D50) is 160.0 um-12.0 um, the content of particle size smaller than 20um is between 12.0% and 55.0%; the weight ratio of the superfine tobacco powder to the water is 1: (4-9), wherein the extraction temperature is 50-80 ℃, and the extraction time is 15-70 min; the slurry in the pulping process has a Shore beating degree of 20-90 SR degrees; the drying temperature is 70-110 ℃.

The absolute dry basis weight of the tablet base was 20g/m²～80g/m²(ii) a The oven dry basis weight of the coated sample is 30g/m²～160g/m²。

Example (c): (1) crushing tobacco stalk raw materials by adopting crushing equipment to prepare superfine tobacco powder, wherein the median diameter (D50) of the superfine tobacco powder is 37.63um, and the particle size content is 34.39% which is smaller than 20 um; (2) placing 80 parts by weight (oven-dried mass) of the superfine tobacco powder in an extraction tank, adding 4 times of water, extracting at 70 ℃ for 30 minutes, and filtering to obtain an extracting solution and filter residue after extraction is finished; (3) concentrating the extracting solution by adopting a reduced pressure distillation concentration process to obtain a concentrated solution, adding 5 parts by weight of humectant into the concentrated solution, fully stirring and uniformly mixing to prepare a coating liquid for later use; (4) taking 20 parts by weight of fluff pulp, pulping according to a pulping process of paper-making reconstituted tobacco, wherein the Shoubule beating degree of the pulp is 450 SR; (5) after pulping, mixing the tobacco powder residue and cellulose fiber slurry together, adding 0.4 part by weight of auxiliary agent 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 ration of the sheet base is 40g/m²(ii) a (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 quantity of the coated reconstituted tobaccoTo prepare 60g/m²(ii) a (7) And drying, rolling, slitting and rewinding the coating sample to obtain the paper filter tip rod product.

The paper filter tip of the reconstituted tobacco has the following smoke indexes trapped in the cellulose acetate filter tip

Sample name	Number of suction ports (mouth/piece)	Tar yield (mg/count)	Smoke nicotine (mg/count)	Carbon monoxide (mg/count)
					Acetate fiber filter tip	6.5	12.0	0.70	11.1
Paper filter tip rod for reconstituted tobacco	6.8	11.0	0.70	11.5

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.