CN118716667A - Roll-pressed sheet, preparation method thereof and cigarette - Google Patents

Abstract

The invention provides a preparation method of a rolling sheet, which comprises the following steps: a) Defibrating the fiber to obtain fiber powder; crushing tobacco raw materials to obtain crushed tobacco raw materials; b) Mixing the fiber powder, the crushed tobacco raw material and the adhesive to obtain a dry material; c) Mixing water, an atomizing agent, an adhesive and essence and spice to obtain a wet material; d) Mixing the dry material and the wet material, roll forming, drying and shredding to obtain the rolled sheet. The invention adopts a dry fiber adding mode to replace the wet fiber adding mode, the fiber adding amount can reach (5-25)%, the tensile strength of the product can be effectively improved, the breakage is reduced, and the foreign gas generated when the foreign substance is heated is avoided. Breakage is reduced, and the sticking condition of the product is effectively relieved; and the sucking feeling of the consumer can be obviously improved.

Description

Roll-pressed sheet, preparation method thereof and cigarette

Technical Field

The invention relates to the technical field of tobacco, in particular to a roll-pressed sheet and a preparation method thereof and a cigarette.

Background Art

New tobacco products mainly include heat-not-burn tobacco products, electronic cigarettes and smokeless tobacco products. It is different from traditional tobacco products. Compared with traditional tobacco products, new tobacco products are usually not burned, so they produce fewer harmful substances and no second-hand smoke, reducing harm to others and environmental pollution. Heated cigarettes release the ingredients in tobacco raw materials (such as nicotine, flavor substances, etc.) by low-temperature heating without burning. It can not only meet the physiological needs of consumers, but also greatly reduce the release of harmful ingredients (such as tar, carbon monoxide, etc.). It has become an important new tobacco product, bringing new development opportunities to the tobacco industry.

Rolled reconstituted tobacco leaves for heated cigarettes can retain the endogenous components, atomizers and added flavors in tobacco raw materials intact, and have advantages such as good sensory quality, simple production process and low cost, which have great advantages in the production of reconstituted tobacco leaves for heated cigarettes. However, rolled reconstituted tobacco leaves have low tensile strength, which can easily lead to problems such as poor continuity and stability in the production and packaging process.

Domestic and foreign research on improving the tensile strength of roller-pressed sheets mainly focuses on production equipment. Zhang Caiyun and others used a self-designed needle-type fiber disintegration device to disintegrate the loose coniferous wood fluff pulp into single fibers while maintaining the fiber length as much as possible. They also achieved uniform mixing of fibers and tobacco powder by controlling the moisture content, dry-wet mixing time, stirring speed and other factors during mixing, thereby increasing the use of external fibers while meeting the requirements of tobacco sheet strength and appearance. Xiao Chunju and others dispersed the disintegrated wood pulp fibers in a medium solution containing adhesives, spices, humectants and other ingredients, and then mixed them evenly with tobacco powder and pressed them into sheets. Chen Guoyan and others used the "wet disintegration and dry addition" process to disintegrate the fibers into single fibers in water, dehydrate them, and then mix them with tobacco powder to make sheets. Roll-pressed reconstituted tobacco leaves have no quality defects such as "flowery sheets".

At present, the main method of adding fibers to prepare roll-pressed sheets is wet addition. The fibers are first soaked and sheared, then mixed with glycerin, flavors and fragrances, smoke-generating agents, etc. to form a liquid material, and then mixed with tobacco powder in a certain proportion and evenly rolled into roll-pressed sheets. Due to the strong water absorption capacity of fibers, it is difficult to transport when the fiber ratio in the liquid material is too high, and wood pulp fibers are prone to fiber flocculation inside tobacco sheets, which is prone to quality problems such as "flower flakes" and "white spots", which restricts the fiber reinforcement effect, resulting in the insufficient addition of wood pulp fibers within 2.5% during wet addition, and the fibers need to be soaked before shearing each time, and soaking and shearing take at least 2 hours each time.

At the same time, there are the following problems when using the roller pressing method to prepare thin sheets: the prepared tobacco thin sheets have a low fiber content, are easy to break, have a low filling value when tobacco is rolled into cigarettes, have a high draw resistance during smoking, and have an unsmooth smoking taste. The thin sheets have insufficient tensile strength and are easy to break, which affects the sensory quality and utilization rate of cigarettes.

At present, there are several urgent problems to be solved when using the roller pressing method to prepare heated cigarette sheets. First, the market feedback shows that the cigarette cartridges made by the heated cigarette roller pressing method sheets on the machine have more sticky needles and greater resistance to insertion and extraction during inhalation, resulting in poor consumer experience, which affects the market share and brand image of the company's heated cigarette roller pressing method sheet products; second, the heated cigarette roller pressing method sheet products are not soft enough, the empty ends are prone to shedding, and the processing performance is insufficient when rolled on the machine; third, the wet addition of wood pulp fibers inside the tobacco sheets is prone to fiber flocculation, resulting in quality problems such as "flower flakes" and "white spots"; fourth, when the fibers are wet added, the fibers must be soaked and then sheared each time, and the soaking and shearing takes at least 2 hours each time; fifth, the fibers after dry dissociation do not carry excess water, are easier to preserve, and can be prepared in the early stage, while wet addition requires immediate preparation and is not easy to store.

Therefore, it is very necessary to provide a new process for rolling thin sheets to improve the tensile strength of the product, reduce crushing, and effectively alleviate the needle sticking of the product.

Summary of the invention

In view of this, the technical problem to be solved by the present invention is to provide a method for preparing a roll-pressed thin sheet. The roll-pressed thin sheet prepared by the present invention has high tensile strength and can effectively alleviate the problem of needle sticking of the product.

The present invention provides a method for preparing a roll-pressed sheet, comprising the following steps:

A) defibration of fibers to obtain fiber powder; crushing tobacco raw material to obtain crushed tobacco raw material;

B) mixing the fiber powder, the pulverized tobacco raw material and an adhesive to obtain a dry material;

C) mixing water, atomizer, adhesive, flavor and fragrance to obtain a wet material;

D) Mix the dry material and the wet material, roll-form, dry, and cut into shreds to obtain roll-formed flakes.

Preferably, the particle size of the fiber powder is 60-150 mesh; the fiber includes one or more of coniferous wood, hardwood, flax, hemp, straw pulp, bamboo pulp, cotton pulp or fluff pulp.

Preferably, the adhesive comprises one or more of sodium alginate, chitosan, guar gum or cellulose acetate;

The atomizer is a mixture of propylene glycol and glycerol.

Preferably, in step B), the mass ratio of the fiber powder, the crushed tobacco raw material and the adhesive is (5-25):100:(1-3.5).

Preferably, the mass ratio of the pulverized tobacco raw material, water, atomizer, adhesive, and flavors and fragrances is 100:(20-40):(10-40):(0.1-0.5):(1-5).

Preferably, the particle size of the crushed tobacco raw material is 150 to 300 meshes.

Preferably, the parameters of the roll forming include a roll press frequency of 22±6; a conveyor frequency of 25±10;

The low temperature drying temperature is 90-105°C;

The present invention provides a roll-pressed thin sheet, which is prepared by the preparation method described in any one of the above technical solutions.

The present invention provides a tobacco material, comprising the roll-pressed sheet described in the above technical solution.

The present invention provides a cigarette, comprising the tobacco material described in the above technical solution.

Compared with the prior art, the present invention provides a method for preparing a roll-pressed thin sheet, comprising the following steps: A) defibration of fibers to obtain fiber powder; crushing tobacco raw materials to obtain crushed tobacco raw materials; B) mixing fiber powder, crushed tobacco raw materials and adhesives to obtain dry materials; C) mixing water, atomizers, adhesives, flavors and fragrances to obtain wet materials; D) mixing dry materials and wet materials, roll-forming, drying, and shredding to obtain roll-pressed thin sheets. The present invention adopts the method of dry fiber addition to replace the traditional wet fiber addition, and the fiber addition amount can reach (5-25)%, which can effectively improve the tensile strength of the product, reduce crushing, and avoid the impurities generated when the exogenous material is heated. Reduce crushing and effectively alleviate the needle sticking of the product; at the same time, it can significantly improve the consumer's smoking experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the process flow of the present invention.

DETAILED DESCRIPTION

The present invention provides a roll-pressed sheet and a method for preparing the same, and a cigarette. A person skilled in the art can refer to the contents of this article and appropriately improve the process parameters to achieve the same. It should be particularly noted that all similar substitutions and modifications are obvious to a person skilled in the art, and they all fall within the scope of protection of the present invention. The method and application of the present invention have been described through preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the method and application of this article without departing from the content, spirit and scope of the present invention to implement and apply the technology of the present invention.

In this application, the term "and/or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

In this application, "at least one" means one or more, "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.

Unless otherwise defined herein, scientific and technical terms related to the present invention shall have the meanings understood by those of ordinary skill in the art.

Furthermore, unless otherwise indicated herein, singular terms shall include pluralities and plural terms shall include the singular. More specifically, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless expressly indicated otherwise.

The terms "include", "comprising" and "having" are used interchangeably herein and are intended to indicate the inclusiveness of the solution, meaning that the solution may have other elements besides the listed elements. At the same time, it should be understood that the use of "include", "comprising" and "having" descriptions herein also provides a "consisting of..." solution.

The term "and/or" as used herein includes the meanings of "and", "or" and "all or any other combination of elements linked by the associated term".

The term "cigarette" refers to any product that can be smoked, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, electronic cigarettes or tobacco substitutes, or any product that can provide a smoking experience. For example, smoking articles may include smokable articles such as cigarettes, cigars and cigarillos. As another example, smoking articles may include combustion smoking articles and heat smoking articles.

In the following embodiments, "tobacco material" may refer to the material that produces smoke and/or aerosol or is used for smoking. For example, smoking material may include tobacco material. Tobacco material may include, for example, tobacco leaf flakes, tobacco stems or cigarette cartridges etc. As a more specific example, tobacco material may include crushed tobacco leaf, crushed reconstituted tobacco, expanded shredded filler, expanded stem and lobule etc. However, the present invention is not limited to this. In addition, tobacco material may have, but is not limited to, the form of tobacco shredded filler, tobacco particles, tobacco flakes, tobacco beads, tobacco particles or tobacco extract.

The patent of this invention provides a new production process for preparing roller-pressed thin sheets, which significantly improves the tensile strength of the product, reduces breakage, and effectively alleviates the problem of product sticking to needles; at the same time, it can significantly improve the consumer's suction experience.

The present invention provides a method for preparing a roll-pressed sheet, comprising the following steps:

A) defibration of fibers to obtain fiber powder; crushing tobacco raw material to obtain crushed tobacco raw material;

B) mixing the fiber powder, the pulverized tobacco raw material and an adhesive to obtain a dry material;

C) mixing water, atomizer, adhesive, flavor and fragrance to obtain a wet material;

D) Mix the dry material and the wet material, roll-form, dry, and cut into shreds to obtain roll-formed flakes.

The method for preparing the roll-pressed thin sheet provided by the invention comprises firstly crushing the tobacco raw material to obtain the crushed tobacco raw material.

The present invention does not limit the tobacco raw materials, and any materials known to those skilled in the art may be tobacco leaves, tobacco stems, tobacco dust, tobacco waste, etc. known to those skilled in the art.

The tobacco raw material is conveyed to a pulverizer and pulverized to a desired particle size, which is generally 150 to 300 meshes, more preferably 160 to 280 meshes, and most preferably 170 to 260 meshes.

The fibers are defibrated to obtain fiber powder.

Specifically, the fibers are defibrated to a desired particle size of 60 to 150 meshes, preferably 70 to 130 meshes, more preferably 80 to 120 meshes, and most preferably 90 to 110 meshes.

The fiber is one or more of coniferous wood, broadleaf wood, flax, hemp, straw pulp, bamboo pulp, cotton pulp, and fluff pulp.

The mesh number of the fiber crushed by the present invention is about 60 to 150 meshes, which is close to the mesh number of the tobacco powder crushed. The addition of the adhesive further promotes the effective combination of the tobacco powder and the fiber, so that the product has both rigid strength and flexibility.

The fiber powder, the crushed tobacco raw material and the adhesive are mixed to obtain a dry material.

The adhesive of the present invention comprises one or more of sodium alginate, chitosan, guar gum or cellulose acetate.

According to the present invention, the mass ratio of the fiber powder, the crushed tobacco raw material and the adhesive is (5-25):100:(1-3.5).

In some specific embodiments, the mass ratio of the fiber powder, the crushed tobacco raw material and the adhesive is (7-23):100:(2-3.5).

In some specific embodiments, the mass ratio of the fiber powder, the crushed tobacco raw material and the adhesive is (9-20):100:(3-3.5).

Mix water, atomizer, adhesive, flavor and fragrance to obtain wet material.

The atomizer of the present invention is a mixture of propylene glycol and glycerol.

According to the present invention, the mass ratio of the pulverized tobacco raw material, water, atomizer, adhesive, and flavor is 100: (20-40): (10-40): (0.1-0.5): (1-5).

In some specific embodiments, the mass ratio of the crushed tobacco raw material, water, atomizer, adhesive, and flavors and fragrances is 100:(22-38):(12-38):(0.20.5):(2-3).

The dry material and wet material are mixed and rolled into shape.

The present invention does not limit the specific parameters of the above mixing, which are well known to those skilled in the art.

The parameters of the roll forming process of the present invention include a roll press frequency of 22±6; a conveyor frequency of 25±10;

The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying; the low temperature drying temperature is 90-105°C;

After low temperature drying and shredding, it is made into heated cigarette rolling method sheets.

The present invention provides a roll-pressed thin sheet, which is prepared by the preparation method described in any one of the above technical solutions.

The present invention has clearly described the above preparation method, which will not be repeated here.

The present invention provides a tobacco material, comprising the roll-pressed sheet described in the above technical solution.

The present invention provides a cigarette, comprising the tobacco material described in the above technical solution.

The cigarette of the present invention also includes conventional auxiliary materials used by those skilled in the art, which are not limited in the present invention.

The present invention provides a method for preparing a roll-pressed thin sheet, comprising the following steps: A) defibration of fibers to obtain fiber powder; crushing tobacco raw materials to obtain crushed tobacco raw materials; B) mixing fiber powder, crushed tobacco raw materials and adhesives to obtain dry materials; C) mixing water, atomizers, adhesives, flavors and fragrances to obtain wet materials; D) mixing the dry materials and the wet materials, roll-forming, drying, and shredding to obtain roll-pressed thin sheets. The present invention adopts a fiber dry addition method to replace the traditional fiber wet addition method, and the fiber addition amount can reach (5-25)%, which can effectively improve the tensile strength of the product, reduce crushing, and avoid the impurities generated when the exogenous material is heated. Reduce crushing, effectively alleviate the needle sticking of the product; and at the same time, it can significantly improve the consumer's suction experience.

The present invention optimizes the process method on the basis of the roller pressing process to prepare the heated cigarette roller pressing sheet. The existing heated cigarette roller pressing sheet solves the problem that the rolled cigarette cartridges are easy to stick to the needle and the resistance to pulling out is large due to the low fiber ratio and strong hygroscopicity of the finished product in the existing heated cigarette roller pressing sheet; the heated cigarette roller pressing sheet prepared by the method provided by the patent of the present invention can significantly improve the tensile strength of the product, reduce the breakage, and significantly improve the consumer's smoking experience.

It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution, some or all of the steps can be executed in parallel or sequentially, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The numerical ranges and parameters involved in the present invention have presented the relevant numerical values in the specific embodiments as accurately as possible. However, any numerical value essentially inevitably contains standard deviations due to individual testing methods. Therefore, unless otherwise explicitly stated, it should be understood that all numerical ranges or specific data used in this disclosure may have certain reasonable deviations within a certain range, for example: within 1% or 0.5%.

Some cases are recorded in the embodiments and comparative examples of the present invention, wherein the embodiments show certain implementation modes of the present invention. However, this does not mean that the effects of the present invention can only be achieved in these cases.

In order to further illustrate the present invention, a roll-pressed sheet, a preparation method thereof and a cigarette provided by the present invention are described in detail below in conjunction with examples.

Example 1

(1) 100 g of tobacco raw material is conveyed to a pulverizer and pulverized to a required particle size, which is generally 200 to 300 meshes;

(2) 5% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is coniferous wood;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

Example 2

(1) 100 g of tobacco raw material is conveyed to a pulverizer and pulverized to a required particle size, which is generally 250 mesh;

(2) 10% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is coniferous wood;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

Example 3

(1) 100 g of tobacco raw material is conveyed to a pulverizer and pulverized to a required particle size, which is generally 300 mesh;

(2) 15% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is hemp;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

Example 4

(1) 100 g of tobacco raw material is conveyed to a pulverizer and pulverized to a required particle size, which is generally 300 mesh;

(2) 20% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is flax;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

Example 5

(1) The tobacco raw material 100 is conveyed to a pulverizer and pulverized to a required particle size, and the required particle size is generally 300 meshes;

(2) 25% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is hardwood;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

Comparative Example 1

(1) 100 g of tobacco raw material is conveyed to a pulverizer and pulverized to a required particle size, which is generally 250 mesh;

(2) 10% of the tobacco raw material is defibrated to the required particle size, 60 mesh, and the fiber is coniferous wood;

(3) Adding adhesive at a ratio of 3.5% of the tobacco raw material. The adhesive is sodium alginate;

(4) Mix (1), (2), and (3) in the above proportions to obtain a dry material;

(5) Mix water, atomizer, adhesive, flavors and spices in a certain proportion and stir evenly to form a wet material. Add flavors and spices to 5% of the tobacco raw material, 25% of water, 0.5% of adhesive, and 25% of the atomizer, which is a mixture of propylene glycol and glycerol;

(6) The dry and wet materials are mixed evenly, subjected to multiple roll forming processes, and then subjected to low temperature drying and shredding to form heated cigarette roll-pressed sheets.

The tensile strength, softness, needle sticking and sensory quality of the heat-not-burn tobacco sheets prepared as described above were evaluated. The specific evaluation results are shown in Table 1.

Table 1

The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims (10)

1. A method for preparing a roll-processed sheet, comprising the steps of:

A) Defibrating the fiber to obtain fiber powder; crushing tobacco raw materials to obtain crushed tobacco raw materials;

b) Mixing the fiber powder, the crushed tobacco raw material and the adhesive to obtain a dry material;

C) Mixing water, an atomizing agent, an adhesive and essence and spice to obtain a wet material;

d) Mixing the dry material and the wet material, roll forming, drying and shredding to obtain the rolled sheet.

2. The method according to claim 1, wherein the fiber powder has a particle size of 60 to 150 mesh; the fibers comprise one or more of needle wood, hardwood, flax, hemp, straw pulp, bamboo pulp, cotton pulp or fluff pulp.

3. The method of claim 1, wherein the adhesive comprises one or more of sodium alginate, chitosan, guar gum, or cellulose acetate;

the atomizing agent is a mixture of propylene glycol and glycerol.

4. The preparation method according to claim 1, wherein the mass ratio of the fiber powder, the crushed tobacco raw material and the adhesive in the step B) is (5 to 25): 100: (1-3.5).

5. The preparation method according to claim 1, wherein the mass ratio of the crushed tobacco raw material, water, an atomizing agent, an adhesive and essence and spice is 100: (20-40): (10-40): (0.1-0.5): (1-5).

6. The method of claim 1, wherein the crushed tobacco material has a particle size of 150 to 300 mesh.

7. The method of claim 1, wherein the roll forming parameters include roll press frequency 22±6; the frequency of the conveyor is 25+/-10;

The temperature of the low-temperature drying is 95-105 ℃.

8. A roll-processed sheet prepared by the preparation method according to any one of claims 1 to 7.

9. A tobacco material comprising the roll-processed sheet of claim 8.

10. A cigarette comprising the tobacco material of claim 9.