This invention discloses a high-strength, multifunctional
papermaking method for reconstituted tobacco
filter material and its preparation method, comprising the following steps: first, tobacco stems and
tobacco dust are cleaned, dried, and then air-jet pulverized to obtain ultrafine tobacco stem and
tobacco dust particles; the ultrafine tobacco stem particles are extracted with hot water and filtered to produce tobacco stem pulp; external fibers are added and broken down to obtain external
fiber pulp; the tobacco stem pulp is mixed with the external
fiber pulp at 5%~50% of the total pulp
dry weight, and a cationic retention aid is added to form a sheet base; the sheet base is coated with a
coating solution made of tobacco extract concentrate, ultrafine
tobacco dust particles,
glycerol, and flavoring; and the finished
filter material is obtained by hot
air drying, slitting, and rolling. This invention achieves a synergistic improvement in
filter material strength,
harm reduction,
flavor enhancement, and
processing performance. The preparation process is simple,
environmentally friendly, and has a high
raw material utilization rate. The tensile strength of the filter material is increased by more than 30% compared with conventional products, and the adsorption rate of harmful substances is increased by more than 25%. It can be widely used in cigarette filters and
tobacco product processing and has extremely high promotional value.