| abstract |
A high-density hollow filter tip is a hollow revolving body structure rolled by high-density materials; the density range is 0.9g/cm 3 ‑1.6g/cm 3 The wall thickness is 0.05-0.7mm, and the outer diameter is 5.0-8.0 mm. The material for preparing the high-density hollow filter rod comprises cellulose acetate and derivatives thereof, polyhydroxyalkanoate and polyolefin organic high polymer. The cellulose acetate and its derivatives include cellulose diacetate, cellulose acetate propionate, cellulose acetate butyrate, methyl cellulose, ethyl cellulose, and hydroxypropyl cellulose. The cellulose acetate and its derivatives have a degree of substitution of hydroxyl groups of 1.5 to 2.8. The invention also discloses a composite filter tip containing the high-density hollow filter tip and application of the composite filter tip in heating cigarettes. When the composite filter tip is applied to heating cigarettes, the pressure drop of the cigarettes can be reduced, the smoke mixing space is improved, the smoke adsorption is reduced, the smoke temperature is reduced, the smoke quantity of the smoke is increased, and the cigarette smoke is keptThe air inlet is comfortable. |