A kind of preparation method of paper-making method heating cigarette special sheet

Abstract

The invention provides a method for preparing a special sheet for heating cigarettes by a papermaking method, comprising the following steps: making a base sheet from a mixed slurry containing tobacco leaf pulp, tobacco stem pulp and mixed outer fiber pulp through papermaking technology, tobacco stem pulp, The mixed outer fiber pulp is modified pulp; the modification process is as follows: the raw tobacco stem pulp and the raw mixed outer fiber pulp are sequentially placed in sodium hydroxide solution and monochloroacetic acid solution for treatment, and then treated with ethanol, Washing with water until neutral; subjecting the substrate to vacuum freeze-drying treatment to obtain a freeze-dried substrate; placing the freeze-dried substrate in layers, vibrating and sieving in the interlayer to coat the mixed powder and atomizer to obtain a coated substrate, mixing the powder and The coating of the atomizing agent is carried out separately, and the mixed powder contains smoke powder, adhesive and inert heat-conducting material; the coated substrate is subjected to vacuum balance treatment after rolling, and shredded to obtain a special sheet. The thin sheet prepared by the invention has better tensile strength, good thermal conductivity and better adsorption effect on the atomizing agent.

Description

technical field [0001] The invention belongs to the technical field of heat-not-burn tobacco products, and in particular relates to a method for preparing a special sheet for heating cigarettes by a papermaking method. Background technique [0002] The rapid development of new tobacco products, especially the rapid growth of heated tobacco products, is very likely to trigger a change in the tobacco industry. Major tobacco companies around the world are investing in the research and development of new heat-not-burn tobacco products. It is expected that the market will exceed 15 billion US dollars by 2021 scale. [0003] The working principle of the heating product is to heat the special sheet for heating cigarettes by low-temperature heating to a degree sufficient to emit tobacco aroma without igniting the tobacco leaves. Normally, ordinary cigarettes release harmful substances when burned at a high temperature of 350-600°C, while heated cigarettes control the heating temper...

AI Technical Summary

Problems solved by technology

[0004] At present, the paper-making heating cigarette special sheet has the disadvantages of poor dispersion of outer fibers, low tensile strength, low thermal conductivity, poor adsorption of atomizing agent, and insufficient atomization effect.

Poor dispersibility of the outer fibers will lead to quality problems such as "flowers" and "white flakes" in the appearance of the prepared tobacco sheets

At present, the common way to improve the low tensile strength is to improve this common shortcoming by increasing the proportion of binder and increasing the amount of external fibers added, but the addition of too many foreign substances makes the appearance of the special sheet for papermaking uniform. Poor sex, and heavy woody smell

In order to improve the disadvantages of poor adsorption of atomizer and insufficient atomization effect, the existing patent CN201510413496.X adopts negative pressure vacuum suction method during spraying to absorb the sprayed smoke powder and glue mixture in the substrate

However, this spraying method is to spray the mixture of smoke powder and glue in the substrate interlayer at the same time, which can easily lead to nozzle blockage, making the continuity of spraying production unable to be guaranteed.

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