CN112841703B - A method for improving the tensile strength of rolled tobacco sheet - Google Patents

Abstract

The invention discloses a method for improving the tensile strength of tobacco sheets by rolling method, which comprises the following steps: 1) adding tobacco powder to the glycerin-rubber powder mixture, stirring and mixing; 2) adding tobacco powder to the material obtained in step 1). Stirring in hot water; 3) molding the material obtained in step 2); 4) drying the sample obtained in step 3) to obtain tobacco sheets. The invention has the advantages of simple operation and good tensile strength enhancement effect, and is convenient to be used in the continuous production of tobacco sheets by rolling method.

Description

A method for improving the tensile strength of rolled tobacco sheet

technical field

The invention relates to the field of rolling tobacco sheet production, in particular to a method for improving the tensile strength of rolling tobacco sheet.

Background technique

Currently, heat-not-burn tobacco products are rapidly emerging around the world and attracting more and more consumers. Heat-not-burn tobacco products use an external heat source to heat rather than ignite tobacco to produce a tobacco-flavored aerosol. Tobacco sheet is one of the key core components of heat-not-burn tobacco products. The tobacco sheet is placed in a heating device and heated by a heat source to release tobacco odor. The production process of traditional rolling tobacco sheet is mainly to mix and stir tobacco powder, adhesive powder, humectant, water and other substances according to a certain proportion to form loose pellets, and then roll through a roller press to form a film. The product is peeled off and dried, cut into flakes or filaments. The tobacco sheet produced by the rolling method has good color and high density, but the product has poor tensile strength, flexibility, and filling property, and the product is easy to break. Therefore, how to improve the tensile strength of rolled tobacco sheet is an important content to be solved urgently by various manufacturers.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for improving the tensile strength of rolled tobacco sheet, which is used to solve the problem of poor tensile strength of rolled tobacco sheet in the prior art.

The present invention is achieved through the following technical solutions:

A method for improving the tensile strength of rolled tobacco sheets, comprising the steps of:

1) Add tobacco powder in the glycerin-rubber powder mixture, stir and mix;

2) adding hot water to the material obtained in step 1) and stirring;

3) molding the material obtained in step 2);

4) drying the sample obtained in step 3) to obtain tobacco sheet.

Preferably, in step 1), at least one of the following technical features is also included:

1) The particle size of the tobacco powder is 100 mesh to 500 mesh, such as 100 mesh to 350 mesh or 350 mesh to 500 mesh;

2) The glycerin-rubber powder mixture is obtained by the following steps: stirring and mixing glycerin and rubber powder;

3) The rubber powder in the glycerin-glue powder mixture is selected from one or more of sodium carboxymethyl cellulose, sodium alginate, tragacanth and xanthan gum;

4) The mass ratio of tobacco powder to glycerin is 2:1-5:1, such as 2:1-3:1 or 3:1-5:1;

5) The mass ratio of tobacco powder and rubber powder is 12:1-35:1, such as 12:1-24:1 or 24:1-35:1;

6) Stirring and mixing time is 10 minutes to 20 minutes, such as 10 minutes to 15 minutes or 15 minutes to 20 minutes.

More preferably, in feature 2), the stirring and mixing temperature is 50°C to 80°C, such as 50°C to 60°C or 60°C to 80°C.

More preferably, in feature 2), the stirring time is 5 min to 20 min, such as 5 min to 10 min or 10 min to 20 min.

Preferably, in step 2), at least one of the following technical features is also included:

1) The temperature of the hot water is 40°C to 60°C, such as 40°C to 50°C or 50°C to 60°C;

2) The mass ratio of tobacco powder to hot water is 1.5:1~2.5:1, such as 1.5:1~2:1 or 2:1~2.5:1;

3) The stirring time is 10 min to 20 min, such as 10 min to 15 min or 15 min to 20 min.

Preferably, in step 3), compression molding is performed by a roller press.

Preferably, in step 3), the weight of the molded tobacco sheet is 150g/m ² -250g/m ² , such as 150g/m ² -200g/m ² or 200g/m ² -250g/m ² .

Preferably, in step 3), the thickness of the molded tobacco sheet is 0.15mm-0.2mm, such as 0.15mm-0.17mm or 0.17mm-0.2mm.

Preferably, in step 4), the drying temperature is 90°C-105°C, such as 90°C-100°C or 100°C-105°C.

Preferably, in step 4), the drying time is 1 min to 3 min, such as 1 min to 2 min or 2 min to 3 min.

The method for enhancing the tensile strength of tobacco sheets by rolling method is simple in operation, low in cost and good in effect, and plays an important role in improving the overall processing usability of tobacco sheets by rolling method. After long-term technical research, the tensile strength enhancement method involved in the present invention effectively enhances the tensile strength of tobacco sheets by roll pressing through techniques such as colloidal solution, that is, glycerin-rubber powder mixture, batching sequence, etc., and is simple to operate and low in cost. The invention plays an important role in improving the application of domestic roll-pressed tobacco sheets in heat-not-burn tobacco products.

Detailed ways

The technical solutions of the present invention are illustrated below through specific examples. It should be understood that one or more method steps mentioned in the present invention do not exclude that there are other method steps before and after the combined steps or other method steps can be inserted between these explicitly mentioned steps; it should also be understood that these The examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Moreover, unless otherwise stated, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the sequence of each method step or limit the scope of the present invention. The change or adjustment of its relative relationship is in In the case of no substantive change in the technical content, it shall also be regarded as the applicable scope of the present invention.

The technical details of the present invention are described in detail by the following examples. It should be noted that the examples cited are only used to further illustrate the technical features of the present invention, rather than to limit the present invention.

The detection method of the tensile strength in the following examples refers to the determination of the tensile strength of paper and cardboard according to the standard GB/T 12914-2008.

Example 1

Traditional rolling method tobacco sheet preparation process

1) Weigh 70g of smoke powder, the particle size of the smoke powder is 100 mesh, add 5.83g of sodium carboxymethyl cellulose rubber powder, and stir for 5 minutes;

2), weigh 35g of glycerin and 46.67g of water and mix evenly to prepare a mixed solution;

3) Mix the mixed materials in step 1) and step 2), and mold them with a roller press, the quantitative of the sample is 155g/m ² , and the thickness is 0.15mm;

4) The sample is dried in an oven at 105°C for 1 min to obtain a finished product.

Rolling method tobacco sheet preparation technology provided by the invention

1), weigh 70g of smoke powder, the particle size of smoke powder is 100 mesh, then weigh 35g of glycerin and 5.83g of sodium carboxymethylcellulose rubber powder, add sodium carboxymethylcellulose into the glycerin solution and stir for 5min to prepare glycerin- Rubber powder mixture, the temperature of the mixture is 50°C, and finally the smoke powder is added to the glycerin-rubber powder mixture and stirred evenly for 10 minutes to prepare the mixture;

2) Add 46.67g of hot water to the mixed material prepared in step 1), the water temperature is 40°C, and stir for 10 minutes;

3), the material prepared in step 2) is molded into a sample by a roller press, the quantitative of the sample is 150g/m ² , and the thickness is 0.15mm;

4) Dry the sample in an oven at 105°C for 1 min to obtain a finished product.

sample Tensile strengthKN/m Samples prepared by the traditional rolling tobacco sheet preparation process 0.26 The sample prepared by the rolling method tobacco sheet preparation process provided by the invention 0.40

Example 2

Traditional rolling method tobacco sheet preparation process

1) Weigh 70g of tobacco powder, the particle size of tobacco powder is 350 mesh, add 2.92g of sodium alginate rubber powder, and stir for 10min;

2), weigh 23.33g glycerol and 35g water and mix evenly to prepare a mixed solution;

3) Mix the mixed materials in step 1) and step 2), and mold them with a roller press machine, the quantitative of the sample is 200g/m ² , and the thickness is 0.17mm;

4) The sample was dried in an oven at 100°C for 2 minutes to obtain a finished product.

Rolling method tobacco sheet preparation technology provided by the invention

1) Weigh 70g of tobacco powder with a particle size of 350 mesh, then weigh 23.33g of glycerin and 2.92g of sodium alginate rubber powder, add sodium alginate rubber powder to the glycerin solution and stir for 10 minutes to prepare glycerin-rubber powder mixture liquid, the temperature of the mixed liquid is 60°C, and finally the smoke powder is added to the glycerin-rubber powder mixed liquid, and stirred evenly for 15 minutes to prepare the mixed material;

2) Add 35g of hot water to the mixed material prepared in step 1), the water temperature is 50°C, and stir for 15 minutes;

3), the material prepared in step 2) is molded into a sample by a roller press, the quantitative of the sample is 200g/m ² , and the thickness is 0.17mm;

4) Dry the sample in an oven at 100°C for 2 minutes to obtain a finished product.

sample Tensile strengthKN/m Samples prepared by the traditional rolling tobacco sheet preparation process 0.20 The sample prepared by the rolling method tobacco sheet preparation process provided by the invention 0.34

Example 3

Traditional rolling method tobacco sheet preparation process

1), weigh 70g of smoke powder, the particle size of smoke powder is 500 mesh, add 2g of tragacanth gum powder, and stir for 20min;

2), weigh 14g glycerol and 28g water and mix evenly to prepare a mixed solution;

3) Mix the mixed materials in step 1) and step 2), and mold them with a roller press, the sample weight is 250g/m ² , and the thickness is 0.20mm;

4) The sample was dried in an oven at 90°C for 3 minutes to obtain a finished product.

Rolling method tobacco sheet preparation technology provided by the invention

1), weigh 70g of smoke powder, the particle size of smoke powder is 500 mesh, then weigh 14g of glycerin and 2g of tragacanth gum powder, add the tragacanth gum powder into the glycerin solution and stir for 20min to prepare the glycerol-rubber powder mixture, the mixture The temperature is 80°C, and finally the smoke powder is added to the glycerin-rubber powder mixture, and stirred evenly for 20 minutes to prepare the mixture;

2) Add 28g of hot water to the mixed material prepared in step 1), the water temperature is 60°C, and stir for 20 minutes;

3), the material prepared in step 2) is molded into the sample by a roller press, the quantitative of the sample is 250g/m ² , and the thickness is 0.20mm;

4) Dry the sample in an oven at 90°C for 3 minutes to obtain a finished product.

sample Tensile strengthKN/m Samples prepared by the traditional rolling tobacco sheet preparation process 0.16 The sample prepared by the rolling method tobacco sheet preparation process provided by the invention 0.25

Claims (8)

1. a method for improving the tensile strength of rolling tobacco sheet, is characterized in that, comprises the following steps: 1) Add tobacco powder in the glycerin-rubber powder mixture, stir and mix; 2) Add hot water at a temperature of 40°C to 60°C to the material obtained in step 1) and stir; the mass ratio of tobacco powder to hot water is 1.5:1 to 2.5:1; the stirring time is 10min to 20min; 3) molding the material obtained in step 2) through a roller press; 4) drying the sample obtained in step 3) to obtain tobacco sheet; In step 1), the glycerin-rubber powder mixture is obtained through the following steps: stirring and mixing glycerin and rubber powder; the mass ratio of tobacco powder to glycerin is 2:1 to 5:1; the mass ratio of tobacco powder to rubber powder is 12:1～35:1. 2. A method for improving the tensile strength of rolled tobacco sheet according to claim 1, characterized in that, in step 1), at least one of the following technical features is also included: 1) The particle size of the tobacco powder is 100 mesh to 500 mesh; 2) The rubber powder in the glycerin-glue powder mixture is selected from one or more of sodium carboxymethyl cellulose, sodium alginate, tragacanth and xanthan gum; 3) Stirring and mixing time is 10min to 20min. 3. A method for improving the tensile strength of rolled tobacco sheet according to claim 2, characterized in that the stirring and mixing temperature of glycerin and rubber powder is 50°C to 80°C. 4. A method for improving the tensile strength of rolled tobacco sheet according to claim 2, characterized in that the stirring time of glycerin and rubber powder is 5min to 20min. The method for increasing the tensile strength of rolled tobacco sheet according to claim 1, characterized in that, in step 3), the weight of the molded tobacco sheet is 150g/m ² -250g/m ² . 6 . A method for improving the tensile strength of rolled tobacco sheet according to claim 1 , characterized in that, in step 3), the thickness of the molded tobacco sheet is 0.15 mm to 0.2 mm. 7. A method for increasing the tensile strength of rolled tobacco sheet according to claim 1, characterized in that in step 4), the drying temperature is 90°C-105°C. 8. A method for improving the tensile strength of rolled tobacco sheet according to claim 1, in step 4), the drying time is 1 min to 3 min.