Cooling and filtering material and preparation method and application thereof

Abstract

The invention discloses a cooling and filtering material as well as a preparation method and application thereof. Plant fiber dispersion liquid and PLA fiber dispersion liquid are evenly mixed, then papermaking is conducted, then calendaring is conducted, and the cooling and filtering material is obtained. Good folding resistance and high-temperature resistance of plant fibers are fully utilized,the plant fibers support the composite material, the fracture problem of a polylactic acid film in the folding and rolling process is solved, and the problems that polylactic acid serves as a coolingmaterial, contracts and collapses as a phase change material after absorbing heat and blocks a smoke channel are solved; the filtering effect, namely the filtering performance, generated by the adsorption and interception effects of the adopted plant fibers is reduced, so that the cooling and filtering material is more suitable for producing non-combustible cigarettes with smaller smoke generationamount, the aroma saturation of smoke is favorably improved, and the smoking experience is improved. The cooling section and the filtering section are combined into one section, so that the cooling section is longer, and the cooling effect is better. Meanwhile, the production cost is reduced, and the production process is simplified.

Description

technical field [0001] The invention belongs to the field of functional materials, in particular to a cooling filter material and its preparation method and application. Background technique [0002] With the acceleration of the global tobacco control movement, the tobacco industry has entered a new period of seeking changes and breakthroughs, which has also promoted and accelerated the development of new tobacco products. Heat-not-burn cigarettes are an important part of new tobacco products. It has low-temperature heating (below 500°C) non-combustion; smoke provides nicotine, which can meet the physiological needs of consumers; and compared with traditional cigarettes, heat-not-burn cigarettes The reduction rate of most harmful components in smoke is more than 90%. Due to the above advantages, heat-not-burn cigarettes are becoming more and more popular in the market, and have gradually become a research hotspot. However, as a new thing, heat-not-burn cigarettes still have...

AI Technical Summary

Problems solved by technology

The existing polylactic acid cooling materials mainly have the following three problems: because polylactic acid is brittle and has limited folding resistance, the polylactic acid film breaks during the process of folding and rolling; as a cooling material, it shrinks as a phase change material after absorbing heat. Collapse, stick and block the smoke channel, affecting the smoking experience; due to the limitation of the length of the cigarette, the length space of the cooling material is limited, and the cooling capacity is limited

Compared with traditional cigarettes, since the heating temperature of heat-not-burn cigarettes is usually below 500°C, many harmful components of the smoke produced have been greatly reduced, but at the same time, the aroma components and nicotine produced are also compared with traditional combustion. Cigarettes are reduced. Although reducing the length of the filter tip can effectively reduce part of the filtration performance, due to the good interception and filtration performance of cellulose acetate, the aroma saturation of the smoke is still reduced, which affects the smoking experience.

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