Coating liquid for reconstituted tobacco and preparation method of coating liquid

Abstract

The invention belongs to the field of reconstituted tobaccos and particularly relates to a coating liquid for the reconstituted tobacco. The coating liquid for the reconstituted tobacco comprises methyleugenol and a coating liquid A, the weight ratio of the methyleugenol to the coating liquid A is less than 0.01%:1 and is not 0, wherein the coating liquid A is prepared through a method comprisinga step (1), a step (2), a step (5), an optional step (3) and an optional step (4) as follows: (1) extracting tobacco leftovers with water, and implementing solid-liquid separation to obtain a first liquid-phase material; (2) extracting a tobacco material with water, and implementing solid-liquid separation to obtain a second liquid-phase material; (3) concentrating the first liquid-phase materialto obtain a first concentrated solution; (4) concentrating the second liquid-phase material to obtain a second concentrated solution; (5) mixing the first liquid-phase material with the second liquid-phase material, or mixing the first concentrated solution with the second concentrated solution. The invention further relates to the preparation method of the coating liquid. The permeation rate of the coating liquid on a substrate is high, and the sensory quality of the reconstituted tobacco is not affected.

Description

technical field [0001] The invention belongs to the field of reconstituted tobacco leaves, and in particular relates to a coating solution for reconstituted tobacco leaves and a method for preparing the coating solution. Background technique [0002] In the reconstituted tobacco leaf process, the coating rate is the limiting factor to improve production efficiency. At present, the average coating speed of the papermaking reconstituted tobacco industry is about 120m / min, and the corresponding average coating rate is 36%-38%. However, increasing the coating speed will inevitably reduce the contact time between the blank substrate and the coating liquid, and the coating rate will be correspondingly reduced under the premise that the penetration rate of the coating liquid on the substrate remains unchanged. In addition, after the coating speed is increased, since the penetration rate of the coating liquid remains unchanged, part of the coating liquid will remain on the surface ...

AI Technical Summary

Problems solved by technology

However, increasing the coating speed will inevitably reduce the contact time between the blank substrate and the coating liquid. Under the premise that the penetration rate of the coating liquid on the substrate remains unchanged, the coating rate will also be reduced accordingly.

In addition, after the coating speed is increased, since the penetration rate of the coating liquid remains unchanged, part of the coating liquid will remain on the surface of the substrate. During the drying process, the remaining coating liquid will form a solid protective film on the surface of the substrate. , to block the evaporation of moisture in the substrate, resulting in opaque tobacco smoke and heavy miscellaneous gas, which seriously affects the adaptability and sensory quality of tobacco leaves for shredding. In addition, the unevaporated moisture in the substrate is easy to pack in the finished product When it is squeezed out, it will cause the adhesion between the finished tobacco leaves and the hardening of the tobacco leaves.

Moreover, during the drying process, the coating solution remaining on the surface of the substrate is prone to burnt smell due to excessive heating, which also has a negative impact on the sensory quality of the tobacco leaves.

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