Method for improving static retention rate of paper-making process reconstituted tobacco powder sheet preparation

Abstract

The invention relates to a method for increasing the static retention rate of paper-making reconstituted tobacco powder sheets in preparation, and belongs to the field of paper-making reconstituted tobacco production.The method comprises the steps that tobacco raw materials are ground, extracted and ground again to obtain tobacco powder, the tobacco powder and wood pulp are mixed to obtain mixed pulp, and the mixed pulp is mixed with the paper-making reconstituted tobacco powder sheets; adding at least two of Pulan gum, Arabic gum, carrageenan, sodium alginate, locust bean gum, konjac gum, gellan gum or cucurbit gum as adhesives into the mixed slurry to obtain a slurry compound, and performing papermaking forming to obtain reconstituted tobacco powder sheets; the static retention rate of the reconstituted tobacco powder thin sheets can be increased by adopting at least two colloids of the prolan gum, the Arabic gum, the carrageenan, the sodium alginate, the locust bean gum, the konjac gum, the gellan gum or the cucurbit gum.

Description

Technical Field

[0001] The present application belongs to the field of papermaking process reconstituted tobacco production, and specifically, relates to a method for improving the static retention rate of papermaking process reconstituted tobacco powder slice preparation. Background Art

[0002] With the continuous progress of social science and technology, people's requirements for the tobacco industry are also constantly increasing. Reconstituted tobacco is one of the raw materials for cigarettes, but in the production process of reconstituted tobacco leaves, the retention rate of the mesh is one of the important factors to improve the yield. At the same time, fine fibers are lost into the brown water, and the treatment of brown water will increase its cost. Low retention rate will increase the amount of pulp used, and the produced sheet base will fall off powder and slag seriously, which will greatly increase the cost of the entire production. Therefore, improving the production yield of reconstituted tobacco leaves is a problem that reconstituted tobacco leaf enterprises currently need to solve.

[0003] Regarding methods for improving the retention rate of reconstituted tobacco leaves, for example, the publication number CN107006888B discloses a method for improving the retention rate of fillers in papermaking reconstituted tobacco leaf products using diatomaceous earth and calcium carbonate composite fillers. This method improves the retention rate by using diatomaceous earth and calcium carbonate composite fillers. Another example is the publication number CN105614942B discloses a method for improving the retention rate of fillers in papermaking reconstituted tobacco leaf base. This method uses a sheet base + filler + sheet base in a sandwich manner. The fillers are calcium carbonate, kaolin, and diatomaceous earth. The fillers are sandwiched between two layers of sheet bases to improve the retention rate of the fillers on the reconstituted tobacco leaf base.

[0004] In the existing technology, diatomaceous earth, calcium carbonate and kaolin are mostly used as fillers to improve the retention rate, while there are few studies on using a variety of natural colloids to improve the static retention rate. Natural plant colloids have excellent properties such as film-forming, gas barrier, strong viscosity, easy solubility in water, non-toxic, harmless, colorless and tasteless. They can improve the taste and aroma of reconstituted tobacco leaves and improve the previously insufficient physical properties. This is of certain significance to the study of improving the retention rate of reconstituted tobacco leaves.

[0005] Therefore, it is necessary to provide a new method for improving the static retention rate of papermaking reconstituted tobacco leaf powder sheets by utilizing natural colloids. Summary of the invention

[0006] In order to overcome the problems existing in the background technology, the present application provides a method for improving the static retention rate of reconstituted tobacco powder sheets prepared by papermaking method, with the purpose of improving the retention rate of reconstituted tobacco powder sheets.

[0007] To achieve the above objectives, this application is implemented through the following technical solutions:

[0008] The present application provides a method for improving the static retention rate of paper of reconstituted tobacco leaf powder sheets by papermaking method, comprising the following steps:

[0009] S1: grinding tobacco raw materials to obtain tobacco powder, mixing the tobacco powder with water, and then repeatedly filtering and grinding;

[0010] S2: beating the wood pulp according to a predetermined pulp concentration value to obtain a preliminary pulp solution having a concentration equal to the pulp concentration value;

[0011] S3: mixing tobacco powder with the prepared slurry to obtain a mixed slurry;

[0012] S4: adding a binder to the mixed slurry to obtain a slurry composite; the binder comprises at least two of prolan gum, gum arabic, carrageenan, sodium alginate, locust bean gum, konjac gum, gellan gum or cucurbit gum;

[0013] S5: forming the slurry composite into a sheet to obtain a reconstituted tobacco leaf base, and drying the reconstituted tobacco leaf base to obtain a reconstituted tobacco leaf powder sheet.

[0014] Optionally, the concentration of prolan gum is 1%-2%, the concentration of arabic colloid is 1%-2%, the concentration of carrageenan is 1%-2%, the concentration of sodium alginate colloid is 1%-2%, the concentration of locust bean gum is 1%-2%, the concentration of konjac gum is 1%-2%, the concentration of gellan gum is 0.5%-2%, and the concentration of cucurbit gum is 1%-2%.

[0015] Optionally, when the adhesive comprises gum pulang and colloid arabic, the addition ratio of gum pulang and colloid arabic in the adhesive is: 1:1, 1:2, 1:3, 2:1 or 3:1;

[0016] Alternatively, when the adhesive comprises prolan gum and carrageenan, the ratio of prolan gum to carrageenan added to the adhesive is 2:1;

[0017] Alternatively, when the adhesive comprises prolan gum and sodium alginate, the addition ratio of prolan gum to sodium alginate is 2:1 or 1:2;

[0018] Alternatively, when the adhesive comprises prolan gum and gellan gum, the ratio of prolan gum to gellan gum in the adhesive is 2:1;

[0019] Alternatively, when the binder includes colloid arabic and carrageenan, the colloid arabic and carrageenan are added in a ratio of 2:1;

[0020] Alternatively, when the adhesive comprises colloid arabic and sodium alginate, the ratio of colloid arabic to sodium alginate is 2:1;

[0021] Alternatively, when the adhesive comprises arabic gum and cucurbit gum, the arabic gum and cucurbit gum are added in a ratio of 2:1;

[0022] Alternatively, when the binder comprises arabic gum and gellan gum, the arabic gum and gellan gum are added in a ratio of 2:1;

[0023] Alternatively, when the binder includes carrageenan and locust bean gum, the carrageenan and locust bean gum are added in a ratio of 2:1;

[0024] Alternatively, when the adhesive comprises carrageenan and konjac gum, the addition ratio of carrageenan to konjac gum is 2:1.

[0025] Optionally, when the adhesive comprises gum pulaolan, colloid arabic and sodium alginate, the addition ratio of gum pulaolan, colloid arabic and sodium alginate is: 1:1:1, 2:1:1, 1:2:1, 1:2:2, 2:1:2 or 2:2:1;

[0026] When the adhesive includes prolan gum, gellan gum and sodium alginate, the addition ratio of prolan gum, gellan gum and sodium alginate is 1:2:1;

[0027] When the adhesive includes prolan gum, cucurbit gum and sodium alginate, the addition ratio of prolan gum, cucurbit gum and sodium alginate is 1:2:1;

[0028] When the adhesive includes prolan gum, locust bean gum and sodium alginate, the addition ratio of prolan gum, locust bean gum and sodium alginate is 1:2:1;

[0029] When the adhesive includes planan gum, konjac gum and sodium alginate, the addition ratio of planan gum, konjac gum and sodium alginate is 1:2:1;

[0030] When the adhesive includes prolan gum, carrageenan and sodium alginate, the addition ratio of prolan gum, carrageenan and sodium alginate is 1:2:1;

[0031] When the adhesive comprises gum pulan, colloid arabic and gellan gum, the addition ratio of gum pulan, colloid arabic and gellan gum is 1:2:1;

[0032] When the adhesive includes gum pulaolan, colloid arabic and cucurbit gum, the addition ratio of gum pulaolan, colloid arabic and cucurbit gum is 1:2:1;

[0033] When the binder includes gellan gum, konjac gum and locust bean gum, the addition ratio of gellan gum, konjac gum and locust bean gum is 1:2:1;

[0034] When the adhesive comprises planan gum, konjac gum and locust bean gum, the addition ratio of planan gum, konjac gum and locust bean gum is 1:2:1.

[0035] Optionally, when the adhesive comprises gum pulaolan, colloid arabic, sodium alginate and gellan gum, the addition ratio of gum pulaolan, colloid arabic, sodium alginate and gellan gum is 1:1:1:1, 2:1:1:1, 1:2:1:1, 1:1:2:1, 2:2:1:1 or 2:1:2:1;

[0036] When the adhesive comprises planan gum, konjac gum, locust bean gum and gum arabic, the addition ratio of planan gum, konjac gum, locust bean gum and gum arabic is: 1:1:1:1 or 1:2:1:1;

[0037] When the adhesive comprises planan gum, gum arabic, sodium alginate and konjac gum, the addition ratio of planan gum, gum arabic, sodium alginate and konjac gum is 2:1:1:1 or 1:1:2:1.

[0038] Optionally, the amount of adhesive added is 0.6%-0.8% of the absolute dry weight of the reconstituted tobacco leaf base.

[0039] Optionally, the tobacco powder is 400-600 mesh.

[0040] Optionally, tobacco powder and the prepared pulp are mixed in a ratio of 30% wood pulp to 70% tobacco powder, with an absolute dry weight ratio of 3:7.

[0041] Optionally, the predetermined pulp concentration value is 1.25%-1.5%, and the beating degree corresponding to the beating is 50-60°SR.

[0042] Optionally, the drying temperature of the reconstituted tobacco leaf base is 150°.

[0043] Beneficial effects of this application:

[0044] 1. The present application adopts a mixture of at least two colloids selected from gum praline, gum arabic, carrageenan, sodium alginate, locust bean gum, konjac gum, gellan gum or cucurbit gum. The synergistic effect produced by the mixture of multiple colloids can significantly improve the static retention rate of the reconstituted tobacco leaf powder sheet, and the static retention rate is increased by up to 21.49%.

[0045] 2. When the tobacco powder of the present application is used with a mesh size of 400-600, the concentration of the smoke is increased, the amount of aroma is increased, the intensity of the smoke is increased, and the natural aroma of the tobacco is in the best state; the separately configured tobacco powder is directly added to the prepared wood pulp and stirred, the mixing is more uniform, the powder has small gaps and is easier to adhere to the wood pulp, and the conditions for static paper forming are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0047] Figure 1 It is a schematic diagram of a process for improving the static retention rate of paper made of reconstituted tobacco leaf powder sheets in the papermaking process as shown in the present application. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and beneficial effects of the present application clearer, the preferred embodiments of the present application will be described in detail below to facilitate the understanding of technical personnel.

[0049] The present application provides a method for improving the static retention rate of paper of reconstituted tobacco leaf powder sheets by papermaking method, comprising the following steps:

[0050] S1: grinding tobacco raw materials to obtain tobacco powder, mixing the tobacco powder with water, and then repeatedly filtering and grinding;

[0051] S2: beating the wood pulp according to a predetermined pulp concentration value to obtain a preliminary pulp solution having a concentration equal to the pulp concentration value;

[0052] S3: mixing tobacco powder with the prepared slurry to obtain a mixed slurry;

[0053] S4: adding a binder to the mixed slurry to obtain a slurry composite; the binder comprises at least two of prolan gum, gum arabic, carrageenan, sodium alginate, locust bean gum, konjac gum, gellan gum or cucurbit gum;

[0054] S5: forming the slurry composite into sheets to obtain reconstituted tobacco leaf base, and drying the reconstituted tobacco leaf base to obtain reconstituted tobacco leaf powder flakes.

[0055] Example 1

[0056] S1: placing tobacco leaf raw materials in an oven, baking them until the moisture content is about 9%, and then using an ultrafine grinder to obtain 400 mesh tobacco powder with a d50 of 30 um; mixing the tobacco powder with water in a ratio of 1:10, extracting at a water temperature of 50°C for 1 hour, extracting twice, filtering with a filter screen after extraction, retaining the solid part, placing the solid part in an oven, drying at 45°C, and grinding the obtained solid again to obtain tobacco powder;

[0057] S2: Wood pulp is pulped separately; the wood pulp is beaten at a pulp consistency of 1.25%, and the beating degree is adjusted to 60°SR;

[0058] S3: mixing tobacco powder and wood pulp in a ratio of 3:7 by absolute dry weight to obtain a mixed slurry;

[0059] S4: adding a binder to the mixed slurry to obtain a slurry composite, wherein the amount of the binder added is 0.8% of the absolute dry weight of the reconstituted tobacco leaf base. The binder includes: prolan gum and arabic gum, the ratio of which is 1:1, 1:2, 1:3, 2:1 or 3:1, and the concentration of prolan gum and arabic gum is 2%;

[0060] S5: The slurry composite is formed into a reconstituted tobacco leaf base by a static paper former, and the reconstituted tobacco leaf base is placed on a drying plate at 150° for drying, and the quantitative control is 55g / m 2 , and obtain reconstituted tobacco leaf powder flakes.

[0061] Calculate the static retention rate: retention rate = actual sample weight / (quantitative design value * mesh area) * 100%,

[0062] The actual sample weighing value is the absolute dry mass of the wet paper on the web after static sheeting, that is, the actual value of the base absolute dry mass, g;

[0063] The quantitative design value is the theoretical design value of the sheet base, g / m 2 ;

[0064] The net area is a fixed value, 0.09m 2 ;

[0065] It is calculated by the above formula that in Example 1, when the ratio of pullan gum to colloid arabic is 1:1, the static retention rate is 56.89%, when the ratio of pullan gum to colloid arabic is 1:2, the static retention rate is 60.22%, when the ratio of pullan gum to colloid arabic is 1:3, the static retention rate is 5.96%, when the ratio of pullan gum to colloid arabic is 2:1, the static retention rate is 62.89%, and when the ratio of pullan gum to colloid arabic is 3:1, the static retention rate is 59.49%.

[0066] Example 2

[0067] The difference between Example 2 and Example 1 is that the adhesive comprises prolan gum and carrageenan, the addition ratio is 2:1, the concentration of prolan gum and carrageenan is 2%, and other conditions remain unchanged.

[0068] It was calculated that when the ratio of prolan gum to carrageenan in Example 2 was 2:1, the static retention rate was 61.22%.

[0069] Example 3

[0070] The difference between Example 3 and Example 1 is that the adhesive comprises: prolan gum and sodium alginate in a ratio of 2:1 or 1:2;

[0071] It was calculated that in Example 3, when the ratio of prolan gum to sodium alginate was 2:1, the static retention rate was 64.91%, and when the ratio of prolan gum to sodium alginate was 1:2, the static retention rate was 58.44%.

[0072] Example 4

[0073] The difference between Example 4 and Example 1 is that the adhesive comprises: prolan gum and gellan gum in a ratio of 2:1, the concentration of prolan gum is 2%, and the concentration of gellan gum is 1%;

[0074] It was calculated that when the ratio of prolan gum to gellan gum in Example 4 was 2:1, the static retention rate was 62.71%.

[0075] Example 5

[0076] The difference between Example 5 and Example 1 is that the adhesive comprises: colloid arabic and carrageenan in a ratio of 2:1, the colloid concentration is 2% of colloid arabic and the carrageenan concentration is 1%;

[0077] It was calculated that when the ratio of arabic colloid to carrageenan in Example 5 was 2:1, the static retention rate was 52.91%.

[0078] Example 6

[0079] The difference between Example 6 and Example 1 is that the adhesive comprises: colloid arabic and sodium alginate in a ratio of 2:1, the concentration of colloid arabic is 2%, and the concentration of sodium alginate is 1%;

[0080] It was calculated that when the ratio of arabic colloid to sodium alginate in Example 6 was 2:1, the static retention rate was 53.98%.

[0081] Example 7

[0082] The difference between Example 7 and Example 1 is that the adhesive comprises: arabic colloid and cucurbit gum in a ratio of 2:1, the concentration of arabic colloid is 2%, and the concentration of cucurbit gum is 1%;

[0083] It was calculated that when the ratio of arabic gum to cucurbit gum in Example 7 was 2:1, the static retention rate was 53.33%.

[0084] Example 8

[0085] The difference between Example 8 and Example 1 is that the adhesive comprises: arabic gum and gellan gum in a ratio of 2:1, the concentration of arabic gum is 2%, and the concentration of gellan gum is 1%;

[0086] It was calculated that when the ratio of arabic gum to gellan gum in Example 8 was 2:1, the static retention rate was 58.11%.

[0087] Example 9

[0088] The difference between Example 9 and Example 1 is that the adhesive comprises: carrageenan and locust bean gum in a ratio of 2:1, the concentration of carrageenan is 2%, and the concentration of locust bean gum is 1%;

[0089] It was calculated that when the ratio of carrageenan to locust bean gum in Example 9 was 2:1, the static retention rate was 55.04%.

[0090] Example 10

[0091] The difference between Example 10 and Example 1 is that the adhesive comprises: carrageenan and konjac gum in a ratio of 2:1, the concentration of carrageenan is 2%, and the concentration of konjac gum is 1%;

[0092] It was calculated that when the ratio of carrageenan to konjac gum in Example 10 was 2:1, the static retention rate was 56.33%.

[0093] Embodiment 11

[0094] The difference between Example 11 and Example 1 is that the adhesive comprises: gum pulaolan, colloid arabic and sodium alginate in a ratio of 1:1:1, 2:1:1, 1:2:1, 1:2:2, 2:1:2 or 2:2:1, and the concentrations of gum pulaolan, colloid arabic and sodium alginate are all 2%;

[0095] It was calculated that in Example 11, when the ratio of prolan gum, colloid arabic and sodium alginate was 1:1:1, the static retention rate was 70.38%, when the ratio of prolan gum, colloid arabic and sodium alginate was 2:1:1, the static retention rate was 62.36%, when the ratio of prolan gum, colloid arabic and sodium alginate was 1:2:1, the static retention rate was 73.05%, when the ratio of prolan gum, colloid arabic and sodium alginate was 1:2:2, the static retention rate was 67.41%, when the ratio of prolan gum, colloid arabic and sodium alginate was 2:1:2, the static retention rate was 68.24%, and when the ratio of prolan gum, colloid arabic and sodium alginate was 2:2:1, the static retention rate was 72.30%.

[0096] Example 12

[0097] The difference between Example 12 and Example 1 is that the adhesive comprises: prolan gum, gellan gum and sodium alginate in a ratio of 1:2:1, and the concentrations of prolan gum, gellan gum and sodium alginate are all 2%;

[0098] It was calculated that in Example 12, when the ratio of prolan gum, arabic gum and sodium alginate was 1:1:1, the static retention rate was 70.38%, and when the ratio of prolan gum, gellan gum and sodium alginate was 1:2:1, the static retention rate was 67.74%.

[0099] Embodiment 13

[0100] The difference between Example 13 and Example 1 is that the adhesive comprises: prolan gum, cucurbit gum and sodium alginate in a ratio of 1:2:1, the concentration of prolan gum is 2%, the concentration of cucurbit gum is 1% and the concentration of sodium alginate is 2%;

[0101] It was calculated that in Example 13, when the ratio of prolan gum, cucurbit gum and sodium alginate was 1:2:1, the static retention rate was 70.38%, and when the ratio of prolan gum, gellan gum and sodium alginate was 1:2:1, the static retention rate was 65.23%.

[0102] Embodiment 14

[0103] The difference between Example 14 and Example 1 is that the adhesive comprises: prolan gum, locust bean gum and sodium alginate in a ratio of 1:2:1, and the concentrations of prolan gum, locust bean gum and sodium alginate are all 2%;

[0104] It was calculated that when the ratio of prolan gum, locust bean gum and sodium alginate in Example 14 was 1:2:1, the static retention rate was 62.93%.

[0105] Embodiment 15

[0106] The difference between Example 15 and Example 1 is that the adhesive comprises: prolan gum, konjac gum and sodium alginate in a ratio of 1:2:1, and the concentrations of prolan gum, konjac gum and sodium alginate are all 2%;

[0107] It was calculated that when the ratio of prolan gum, konjac gum and sodium alginate in Example 15 was 1:2:1, the static retention rate was 60.02%.

[0108] Example 16

[0109] The difference between Example 16 and Example 1 is that the adhesive comprises: prolan gum, carrageenan and sodium alginate in a ratio of 1:2:1, and the concentrations of prolan gum, carrageenan and sodium alginate are all 2%;

[0110] It was calculated that when the ratio of prolan gum, carrageenan and sodium alginate in Example 16 was 1:2:1, the static retention rate was 65.80%.

[0111] Embodiment 17

[0112] The difference between Example 17 and Example 1 is that the adhesive comprises: prolan gum, arabic gum and gellan gum in a ratio of 1:2:1, and the concentrations of prolan gum, arabic gum and gellan gum are all 2%;

[0113] It was calculated that when the ratio of prolan gum, arabic gum and gellan gum in Example 17 was 1:2:1, the static retention rate was 63.27%.

[0114] Embodiment 18

[0115] The difference between Example 18 and Example 1 is that the adhesive comprises: prolan gum, arabic gum and cucurbit gum in a ratio of 1:2:1, the concentration of prolan gum is 2%, the concentration of arabic gum is 2% and the concentration of cucurbit gum is 1%;

[0116] It was calculated that when the ratio of prolan gum, arabic gum and cucurbit gum in Example 18 was 1:2:1, the static retention rate was 62.08%.

[0117] Embodiment 19

[0118] The difference between Example 19 and Example 1 is that the adhesive comprises: planan gum, konjac gum and locust bean gum in a ratio of 1:2:1, and the concentrations of planan gum, konjac gum and locust bean gum are all 2%;

[0119] It was calculated that when the ratio of prolan gum, konjac gum and locust bean gum in Example 19 was 1:2:1, the static retention rate was 77.39%.

[0120] Comparative Example 1

[0121] The difference between Comparative Example 1 and Example 1 is that the adhesive comprises gellan gum, konjac gum and locust bean gum in a ratio of 1:2:1, and the concentrations of gellan gum, konjac gum and locust bean gum are all 2%;

[0122] It was calculated that when the ratio of gellan gum, konjac gum and locust bean gum in Comparative Example 1 was 1:2:1, the static retention rate was 57.14%.

[0123] Embodiment 20

[0124] The difference between Example 20 and Example 1 is that the adhesive comprises: gum pulan, colloid arabic, sodium alginate and gellan gum in a ratio of 1:1:1:1, 2:1:1:1, 1:2:1:1, 1:1:2:1 or 2:1:2:1, and the concentrations of gum pulan, colloid arabic, sodium alginate and gellan gum are all 2%;

[0125] It was calculated that in Example 20, when the ratio of prolan gum, colloid arabic, sodium alginate and gellan gum was 1:1:1:1, the static retention rate was 66.48%, when the ratio of prolan gum, colloid arabic, sodium alginate and gellan gum was 2:1:1:1, the static retention rate was 78.48%, when the ratio of prolan gum, colloid arabic, sodium alginate and gellan gum was 1:2:1:1, the static retention rate was 67.70%, when the ratio of prolan gum, colloid arabic, sodium alginate and gellan gum was 1:1:2:1, the static retention rate was 71.80%, and when the ratio of prolan gum, colloid arabic, sodium alginate and gellan gum was 2:1:2:1, the static retention rate was 65.11%.

[0126] Comparative Example 2

[0127] The difference between Comparative Example 2 and Example 19 is that the adhesive comprises: prolan gum, arabic gum, sodium alginate and gellan gum in a ratio of 2:2:1:1, and the concentrations of prolan gum, arabic gum, sodium alginate and gellan gum are all 2%;

[0128] It was calculated that when the ratio of prolan gum, arabic gum, sodium alginate and gellan gum in the comparative example was 2:2:1:1, the static retention rate was 59.96%.

[0129] Embodiment 21

[0130] The difference between Example 21 and Example 1 is that the adhesive comprises: planan gum, konjac gum, locust bean gum and gum arabic in a ratio of 1:1:1:1 or 1:2:1:1, and the concentrations of planan gum, konjac gum, locust bean gum and gum arabic are all 2%;

[0131] It was calculated that in Example 21, when the ratio of prolan gum, konjac gum, locust bean gum and gum arabic was 1:1:1:1, the static retention rate was 68.00%, and when the ratio of prolan gum, konjac gum, locust bean gum and gum arabic was 1:2:1:1, the static retention rate was 74.73%.

[0132] Embodiment 22

[0133] The difference between Example 22 and Example 1 is that the adhesive comprises: prolan gum, gum arabic, sodium alginate and konjac gum in a ratio of 2:1:1:1 or 1:1:2:1, and the concentrations of prolan gum, gum arabic, sodium alginate and konjac gum are all 2%;

[0134] It was calculated that in Example 22, when the ratio of prolan gum, gum arabic, sodium alginate and konjac gum was 2:1:1:1, the static retention rate was 71.41%, and when the ratio of prolan gum, gum arabic, sodium alginate and konjac gum was 1:1:2:1, the static retention rate was 66.28%.

[0135] Comparative Example 3

[0136] Comparative Example 3 is compared with Example 1, and the difference of Comparative Example 3 is that no adhesive is added.

[0137] The static retention rate in Comparative Example 3 was calculated to be 48.48%.

[0138] It can be seen from the embodiments and comparative examples that when two colloids are compounded, the static retention rate is 62.89% when the ratio of prolan gum to arabic gum is 2:1; when three colloids are compounded, the static retention rate is 77.39% when the ratio of prolan gum, konjac gum and locust bean gum is 1:2:1; when four colloids are compounded, the static retention rate is 78.48% when the ratio of prolan gum, arabic gum, sodium alginate and gellan gum is 2:1:1:1. It can be seen that the colloid compounding can improve the retention rate of the preparation of reconstituted tobacco leaf powder sheets, and prolan colloid, arabic gum, sodium alginate colloid and gellan gum produce a synergistic enhancement effect to improve the static retention rate of the reconstituted tobacco leaf powder sheets.

[0139] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not intended to be limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes may be made in form and detail without departing from the scope defined by the claims of the present application.

Claims

1. A method for improving the static retention rate of reconstituted tobacco leaf powder sheets in papermaking process, characterized in that: The following steps are involved: S1: grinding tobacco raw materials to obtain tobacco powder, mixing the tobacco powder with water, and then repeatedly filtering and grinding; S2: beating the wood pulp according to a predetermined pulp concentration value to obtain a preliminary pulp solution having a concentration equal to the pulp concentration value; S3: mixing the tobacco powder with the prepared slurry to obtain a mixed slurry; S4: adding a binder to the mixed slurry to obtain a slurry composite; the binder comprises: at least two of prolan gum, gum arabic, carrageenan, sodium alginate, locust bean gum, konjac gum, gellan gum or cucurbit gum; S5: forming the slurry composite into sheets to obtain reconstituted tobacco leaf base, and drying the reconstituted tobacco leaf base to obtain reconstituted tobacco leaf powder flakes.

2. The method according to claim 1, characterized in that: The concentration of the prolan gum is 1%-2%, the concentration of the arabic colloid is 1%-2%, the concentration of the carrageenan is 1%-2%, the concentration of the sodium alginate colloid is 1%-2%, the concentration of the locust bean gum is 1%-2%, the concentration of the konjac gum is 1%-2%, the concentration of the gellan gum is 0.5%-2%, and the concentration of the cucurbit gum is 1%-2%.

3. The method according to claim 1 or 2, characterized in that: When the adhesive comprises the pullan gum and the colloid arabic, the pullan gum and the colloid arabic are added in the adhesive in a ratio of 1:1, 1:2, 1:3, 2:1 or 3:1; Alternatively, when the adhesive comprises the prolan gum and the carrageenan, the ratio of the prolan gum to the carrageenan in the adhesive is 2:1; Alternatively, when the adhesive comprises the prolan gum and the sodium alginate, the addition ratio of the prolan gum and the sodium alginate is 2:1 or 1:2; Alternatively, when the adhesive comprises the prolan gum and the gellan gum, the ratio of the prolan gum to the gellan gum in the adhesive is 2:1; Alternatively, when the adhesive comprises the colloid arabic and the carrageenan, the addition ratio of the colloid arabic to the carrageenan is 2:1; Alternatively, when the adhesive comprises the colloid arabic and the sodium alginate, the addition ratio of the colloid arabic to the sodium alginate is 2:1; Alternatively, when the adhesive comprises the colloid arabic and the cucurbit gum, the addition ratio of the colloid arabic to the cucurbit gum is 2:1; Alternatively, when the adhesive comprises the colloid arabic and the gellan gum, the addition ratio of the colloid arabic to the gellan gum is 2:1; Alternatively, when the adhesive comprises the carrageenan and the locust bean gum, the addition ratio of the carrageenan to the locust bean gum is 2:1; Alternatively, when the adhesive comprises the carrageenan and the konjac gum, the addition ratio of the carrageenan to the konjac gum is 2:

1.

4. The method according to claim 1 or 2, characterized in that: When the adhesive comprises the prolan gum, the arabic gum and the sodium alginate, the addition ratio of the prolan gum, the arabic gum and the sodium alginate is: 1:1:1, 2:1:1, 1:2:1, 1:2:2, 2:1:2 or 2:2:1; When the adhesive comprises the prolan gum, the gellan gum and the sodium alginate, the addition ratio of the prolan gum, the gellan gum and the sodium alginate is 1:2:1; When the adhesive comprises the prolan gum, the cucurbit gum and the sodium alginate, the addition ratio of the prolan gum, the cucurbit gum and the sodium alginate is 1:2:1; When the adhesive comprises the prolan gum, the locust bean gum and the sodium alginate, the addition ratio of the prolan gum, the locust bean gum and the sodium alginate is: 1:2:1; When the adhesive comprises the prolan gum, the konjac gum and the sodium alginate, the addition ratio of the prolan gum, the konjac gum and the sodium alginate is 1:2:1; When the adhesive comprises the prolan gum, the carrageenan and the sodium alginate, the addition ratio of the prolan gum, the carrageenan and the sodium alginate is 1:2:1; When the adhesive comprises the prolan gum, the arabic gum and the gellan gum, the addition ratio of the prolan gum, the arabic gum and the gellan gum is 1:2:1; When the adhesive comprises the prolan gum, the arabic gum and the cucurbit gum, the addition ratio of the prolan gum, the arabic gum and the cucurbit gum is 1:2:1; When the adhesive comprises the gellan gum, the konjac gum and the locust bean gum, the addition ratio of the gellan gum, the konjac gum and the locust bean gum is 1:2:1; When the adhesive comprises the pullan gum, the konjac gum and the locust bean gum, the addition ratio of the pullan gum, the konjac gum and the locust bean gum is 1:2:

1.

5. The method according to claim 1 or 2, characterized in that: When the adhesive comprises the prolan gum, the arabic gum, the sodium alginate and the gellan gum, the prolan gum, the arabic gum, the sodium alginate and the gellan gum are added in a ratio of 1:1:1:1, 2:1:1:1, 1:2:1:1, 1:1:2:1, 2:2:1:1 or 2:1:2:1; When the adhesive comprises the pullan gum, the konjac gum, the locust bean gum and the gum arabic, the pullan gum, the konjac gum, the locust bean gum and the gum arabic are added in a ratio of 1:1:1:1 or 1:2:1:1; When the adhesive comprises the pullan gum, the gum arabic, the sodium alginate and the konjac gum, the addition ratio of the pullan gum, the gum arabic, the sodium alginate and the konjac gum is 2:1:1:1 or 1:1:2:

1.

6. The method according to claim 1, characterized in that: The added amount of the adhesive is 0.6%-0.8% of the absolute dry weight of the reconstituted tobacco leaf base.

7. The method according to claim 1, characterized in that: The tobacco powder has a mesh size of 400-600.

8. The method according to claim 1, characterized in that: The tobacco powder and the prepared pulp are mixed in a ratio of 30% by wood pulp and 70% by tobacco powder, with the absolute dry weight ratio being 3:

7.

9. The method according to claim 1, characterized in that: The predetermined pulp concentration value is 1.25%-1.5%, and the beating degree corresponding to the beating is 50-60°SR.

10. The method according to claim 1, characterized in that: The drying temperature of the reconstituted tobacco leaf base is 150°.

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