Paper-making reconstituted tobacco preparation method and method for improving coating liquid absorbability of paper-making reconstituted tobacco substrate

Abstract

The invention provides a paper-making reconstituted tobacco preparation method and a method for improving coating liquid absorbability of a paper-making reconstituted tobacco substrate. The paper-making reconstituted tobacco preparation method includes steps: 1) after extracting with an extracting agent, performing solid-liquid separation to obtain tobacco insoluble matters and tobacco extract liquid; 2) subjecting the tobacco insoluble matters to pulping, and performing net forming and pressing to obtain a wet substrate; 3) subjecting the wet substrate to drying, coating of bicarbonate and drying to obtain a substrate; 4) subjecting the tobacco extract liquid to refining concentration to obtain coating liquid; or adding organic acid after refining concentration to obtain the coating liquid; 5) coating the substrate with the coating liquid, and drying and slitting to obtain reconstituted tobacco. Liquid absorbability of the substrate is improved by thermal decomposition action of bicarbonate; preferably, coating liquid absorbability of the paper-making reconstituted tobacco substrate is improved by improving substrate infiltration performance of the coating liquid through reductionof residue content of the coating liquid.

Description

technical field [0001] The invention relates to the technical field of papermaking reconstituted tobacco leaves, in particular to a method for preparing papermaking reconstituted tobacco leaves and a method for improving the absorbability of a papermaking reconstituted tobacco leaf base sheet to a coating solution. Background technique [0002] Reconstituted tobacco leaf, also known as tobacco flakes, is an important form of tobacco waste reuse and has great environmental and economic value. Its production technologies mainly include rolling method, thick pulp method, and papermaking method. The typical production process of reconstituted tobacco leaves by papermaking method is to extract tobacco raw materials with extractant and separate solid and liquid to obtain tobacco extract and tobacco insoluble matter. The tobacco extract is refined, concentrated, flavored and added to make coating liquid. Tobacco The insoluble matter is made into a tobacco base sheet by pulping and ...

AI Technical Summary

Problems solved by technology

[0005] There is still little research on the wetting ability of the coating liquid on the substrate, but it is not difficult to find out from the actual production that the type and content of the substance in the coating liquid are important factors affecting its wetting ability

In addition to the type of raw materials, the refining and concentration process of the extract, important factors that lead to changes in the type and content of substances in the coating solution include the addition of additives. For example, the addition of some organic acid salts will affect the precipitation and dissolution balance in the coating solution. As a result, a large amount of precipitation is generated. In order to deal with the problem of excessive slag content in the coating solution, a purification and recycling system is generally used in production, but a large amount of components of the coating solution will be lost during this process.

Images