Use of lactide acid polymer

Abstract

Use of lactate polymer is for filter tip material of cigarette, their molecular weight is between 5-200,000, smelting point is between140-170 degrees C, melt flowing index is 5-30g / 10min at 190 degrees C and 2.16kg load, binding strength at room temperature is 4-12Mpa by triacetate glyceride. It has proper crystallinity, dissolubility, adsorptive performance and mechanical strength and can satisfy requirement of spinning, after-treatment and shearing.

Description

technical field

[0001] The invention relates to the use of lactic acid polymers, in particular to the use of lactic acid polymers as raw materials for manufacturing cigarette tow, filter rods and filter tips. Background technique

[0002] Cigarette filter is an indispensable part of cigarettes. It can filter, block and absorb harmful components in the breath, such as nicotine and tar. For a long time, two kinds of filter materials have been mainly used in the market, one is cellulose acetate fiber and the other is polypropylene fiber. Cellulose acetate is easily spun into fine denier fibers, and the bonding process from fiber to filter rod is relatively easy. The filter rod and filter tip made have superior comprehensive performance and are suitable for use in medium and high-end cigarettes. However, it uses high-quality perennial wood as raw material, and the process from wood to cellulose to cellulose acetate is accompanied by more pollution problems. Using dry spinning r...