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Method for secondary coating of reconstituted tobacco and reflux treatment of coating liquid

A secondary coating and tobacco sheet technology, which is applied in the fields of tobacco, tobacco preparation, application, etc., can solve the problems of the appearance and sensory quality of the sheet, the difficulty of controlling the coating amount of the coating process, and the increase of viscosity and solid content. Achieve continuous and stable production conditions, light weight, and increase the effect of coating rate

Active Publication Date: 2013-07-17
CHINA HAISUM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The commonly used coating device for tobacco sheets is a one-time dip-coating process. The concentrated extract solution (coating solution) is coated on the film base by continuous reflux circulation, that is, liquid feeding-substrate dipping-coating solution The disadvantages of backflow and sequential circulation are: 1. It is difficult to control the coating amount of the coating process, the coating uniformity is not good, and the coating rate is also low, generally below 50%. , it is inevitable that the fine fibers in the film base and the damaged small pieces of the film base will be brought into the coating liquid, which will affect the quality of the coating liquid; 3. The continuous reflux of the coating liquid will make its viscosity and solid content gradually increase. High, not only causes poor fluidity of the coating liquid, affects the stability of the continuous production of the sheet, but also directly affects the appearance and sensory quality of the sheet
However, the patent uses a filter system for continuous production, which requires regular cleaning, which is inconvenient to operate

Method used

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  • Method for secondary coating of reconstituted tobacco and reflux treatment of coating liquid

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Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, it is a flow chart of the tobacco sheet secondary coating and coating solution reflux treatment method, and the described tobacco sheet secondary coating and coating solution reflux treatment method comprises: tobacco raw materials (tobacco stems, tobacco leaf fragments and tobacco powder ) is extracted with water and separated, the insoluble matter is pulped and copied into a film base, the extract containing soluble matter is filtered through a filter, concentrated and prepared to obtain a tobacco sheet coating liquid; the concentrated coating liquid is coated by dip coating Distributed on the film base; after dip coating, the refluxing coating solution is separated at a temperature of 50°C by a primary cyclone separator, and the pressure drop between the inlet of the primary cyclone separator and the bottom flow port is 0.18Mpa; purification The final coating liquid is foamed by a foamer, and the foaming ratio is: 1:3. The coating liquid is...

Embodiment 2

[0027] Such as figure 1 As shown, it is a flow chart of the tobacco sheet secondary coating and coating solution reflux treatment method, and the described tobacco sheet secondary coating and coating solution reflux treatment method comprises: tobacco raw materials (tobacco stems, tobacco leaf fragments and tobacco powder ) is extracted with water and separated, the insoluble matter is pulped and copied into a film base, the extract containing soluble matter is filtered through a filter, concentrated and prepared to obtain a tobacco sheet coating liquid; the concentrated coating liquid is coated by dip coating Distributed on the film base; after dip coating, the refluxing coating solution is separated at a temperature of 70°C by a primary cyclone separator, and the pressure drop between the inlet of the primary cyclone separator and the bottom flow port is 0.18Mpa; purification The final coating liquid is foamed by a foamer, and the foaming ratio is: 1:6. The coating liquid is...

Embodiment 3

[0030] Such as figure 1 As shown, it is a flow chart of the tobacco sheet secondary coating and coating solution reflux treatment method, and the described tobacco sheet secondary coating and coating solution reflux treatment method comprises: tobacco raw materials (tobacco stems, tobacco leaf fragments and tobacco powder ) is extracted with water and separated, the insoluble matter is pulped and copied into a film base, the extract containing soluble matter is filtered through a filter, concentrated and prepared to obtain a tobacco sheet coating liquid; the concentrated coating liquid is coated by dip coating Distributed on the film base; after dipping, the backflow coating solution is separated at a temperature of 30°C by a primary cyclone separator, and the pressure drop between the inlet of the primary cyclone separator and the bottom flow port is 0.30Mpa; purification The final coating liquid is foamed by a foamer, and the foaming ratio is: 1:10. The coating liquid is sec...

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Abstract

The invention provides a method for secondary coating of reconstituted tobacco and reflux treatment of a coating liquid. The method comprises the following steps of: extracting a tobacco raw material, separating, pulping insoluble matter, papermaking to obtain a sheet base, and blending an extracting liquid to obtain the coating liquid; coating the coating liquid on the sheet base in a dip-coating mode; separating the coating liquid which is dip-coated and refluxed by using a first-stage cyclone separator to obtain a purified coating liquid and a coating liquid containing small impurities andsmall damaged sheets of the sheet base; bubbling the purified coating liquid by using a bubbler, and coating the coating liquid on the sheet base for the second time by a bubble coating method; and mixing the obtained coating liquid containing the small impurities and the small damaged sheets of the sheet base, and a coating liquid which is refluxed after secondary coating, separating by using a second-stage cyclone separator, and recycling an obtained purified coating liquid. By the method, the coating weight of the reconstituted tobacco is increased, the solid content and viscosity of the coating liquid are stabilized, the loss of the coating liquid is reduced, and the control accuracy of the coating weight of the reconstituted tobacco can be improved.

Description

technical field [0001] The invention relates to a secondary coating of tobacco flakes and a coating liquid reflux treatment method, and belongs to the technical field of tobacco flake production by papermaking. Background technique [0002] Tobacco sheet is processed tobacco waste such as tobacco stems, tobacco powder and low-grade tobacco leaves in the cigarette production process to produce sheet-shaped tobacco regenerated raw materials that meet the requirements of cigarette formula. Tobacco sheet is blended with natural tobacco leaves in a certain proportion Made into cigarettes. [0003] There are three main processes for manufacturing tobacco sheets, namely: roll pressing method, thick pulp method and paper-making method. Among them, the paper-making method has the comprehensive advantages of various processes and currently occupies a dominant position. The production technology of paper-making tobacco flakes adopts a two-step processing process: adding water to soak ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B3/14
Inventor 刘攀吴立群张裕福
Owner CHINA HAISUM ENG