Aerosol generating substrate manufacturing method and manufacturing device

Abstract

A manufacturing method for manufacturing an aerosol generating substrate is provided. The manufacturing method includes: a mixed material is extrusion molded under normal temperature to make the mixed material to form an extrusion substrate; and the extrusion substrate is dried under negative pressure in a vacuum environment.

1 . A manufacturing method for manufacturing an aerosol generating substrate, comprising:
 extrusion molding of a mixed material under normal temperature to make the mixed material to form an extrusion substrate; and   drying of the extrusion substrate under negative pressure in a vacuum environment.   
     
     
         2 . The manufacturing method according to  claim 1 , wherein at least one of following requirements are met: an extrusion temperature for the extrusion molding under the normal temperature ranges from 10° C. to 90° C.;
 a temperature in the vacuum environment is greater than 20° C. and less than 100° C.; 
 an absolute pressure in the vacuum environment ranges from 0 kpa to 101.325 kpa; or 
 an extrusion pressure for the extrusion molding under the normal temperature ranges from 0.5 bar to 300 bar. 
 
     
     
         3 . The manufacturing method according to  claim 1 , wherein the drying of the extrusion substrate under the negative pressure comprises:
 drying of the extrusion substrate under the negative pressure by at least one of microwave heating, resistance heating, or infrared heating.   
     
     
         4 . The manufacturing method according to  claim 1 , wherein the manufacturing method further comprises:
 slitting the extrusion substrate into a set length.   
     
     
         5 . The manufacturing method according to  claim 4 , wherein slitting the extrusion substrate into the set length comprises:
 slitting the extrusion substrate into the set length before the drying of the extrusion substrate under the negative pressure; or   pre-slitting the extrusion substrate before the drying of the extrusion substrate under the negative pressure, and slitting the pre-slit extrusion substrate into the set length after the drying of the extrusion substrate under the negative pressure.   
     
     
         6 . The manufacturing method according to  claim 4 , wherein the slitting is physical contact slitting in which a slitting tool is in contact with the extrusion substrate; or the slitting is non-physical contact slitting in which a slitting tool is spaced apart from the extrusion substrate. 
     
     
         7 . The manufacturing method according to  claim 1 , wherein before the drying of the extrusion substrate under the negative pressure, the manufacturing method further comprises:
 cooling and hardening the extrusion substrate.   
     
     
         8 . The manufacturing method according to  claim 7 , wherein the cooling and hardening the extrusion substrate comprises:
 placing the extrusion substrate in a low temperature environment for cooling, wherein a temperature in the low temperature environment is lower than a hardening temperature of the extrusion substrate.   
     
     
         9 . The manufacturing method according to  claim 8 , wherein the hardening temperature ranges from −100° C. to 60° C., and the temperature in the low temperature environment ranges from −270° C. to 60° C. 
     
     
         10 . The manufacturing method according to  claim 7 , wherein after cooling and hardening the extrusion substrate, the manufacturing method further comprises:
 slitting the extrusion substrate into a set length.   
     
     
         11 . The manufacturing method according to  claim 7 , wherein at least one of following requirements are met: a hardness of the extrusion substrate after being cooled and hardened ranges from 1 HB to 200 HB; or
 a temperature of the extrusion substrate after being cooled and hardened ranges from −50° C. to 5° C.   
     
     
         12 . The manufacturing method according to  claim 1 , wherein a hardness of the extrusion substrate after the drying under the negative pressure ranges from 40 HB to 300 HB. 
     
     
         13 . The manufacturing method according to  claim 1 , wherein moisture content in the extrusion substrate after the drying under the negative pressure ranges from 3% to 20% of a total weight of the extrusion substrate. 
     
     
         14 . The manufacturing method according to  claim 1 , wherein components of the mixed material comprise solid material and liquid material, wherein before the extrusion molding of the mixed material under the normal temperature, the manufacturing method further comprises:
 dividing the solid material and the liquid material into two parts for separate feeding.   
     
     
         15 . The manufacturing method according to  claim 14 , wherein dividing the solid material and the liquid material into two parts for separate feeding comprises:
 adding the solid material; and   adding the liquid material to the solid material when the solid material moves to an addition position of the liquid material along a material conveying direction.   
     
     
         16 . The manufacturing method according to  claim 1 , wherein in 100 parts by weight of the mixed material, a plant raw material is 30 to 90 parts, an auxiliary agent raw material is 1 to 15 parts, a smoking agent raw material is 5 to 30 parts, an adhesive raw material is 1 to 10 parts, and a flavor raw material is 1 to 15 parts. 
     
     
         17 . A manufacturing apparatus for manufacturing an aerosol generating substrate, comprising:
 an extruder, configured to perform extrusion molding of a mixed material under normal temperature to make the mixed material to form an extrusion substrate; and   a vacuum drying device, configured to perform drying of the extrusion substrate under negative pressure.   
     
     
         18 . The manufacturing apparatus according to  claim 17 , wherein an extrusion die of the extruder is a single-die single-opening die set comprising one die base, and a die opening is provided at a discharge end of the die base; or
 an extrusion die of the extruder is a single-die multi-opening die set comprising one die base, and a plurality of die openings is provided at a discharge end of the die base; or   an extrusion die of the extruder is a multi-die multi-opening die set comprising a plurality of die bases, and a plurality of die openings are provided at a discharge end of each of the plurality of die bases.   
     
     
         19 . The manufacturing apparatus of  claim 17 , further comprising a hardening device and two slitting devices,
 wherein the hardening device is disposed between the extruder and the vacuum drying device, to cool and harden the extrusion substrate prior to the drying under the negative pressure;   wherein one of the two slitting devices is disposed between the hardening device and the vacuum drying device, to pre-slit the cooled and hardened extrusion substrate prior to the drying under the negative pressure; and another one of the two slitting devices is disposed downstream of the vacuum drying device along a material conveying direction, to slit the extrusion substrate after the drying under the negative pressure into a set length.   
     
     
         20 . The manufacturing apparatus of  claim 17 , further comprising a hardening device and a slitting device;
 wherein the hardening device is disposed between the extruder and the vacuum drying device, to cool and harden the extrusion substrate prior to the drying under the negative pressure;   wherein the slitting device is disposed between the hardening device and the vacuum drying device, to slit the cooled and hardened extrusion substrate into a set length before the drying under the negative pressure.