Aerosol generating substrate and aerosol generating article

Abstract

An aerosol generating substrate includes: at least one airway that passes through at least one end of the aerosol generating substrate along a length direction. A wall thickness range of the at least one airway is 0.1 mm to 9.8 mm. In an embodiment, the at least one airway passes through two opposite ends of the aerosol generating substrate along the length direction.

What is claimed is: 
     
         1 . An aerosol generating substrate, comprising:
 at least one airway that passes through at least one end of the aerosol generating substrate along a length direction, and   wherein a wall thickness range of the at least one airway is 0.1 mm to 9.8 mm.   
     
     
         2 . The aerosol generating substrate of  claim 1 , wherein the at least one airway passes through two opposite ends of the aerosol generating substrate along the length direction. 
     
     
         3 . The aerosol generating substrate of  claim 1 , wherein the wall thickness range of the at least one airway is 0.15 mm to 3.5 mm. 
     
     
         4 . The aerosol generating substrate of  claim 1 , wherein the at least one airway comprises a plurality of airways,
 wherein at least one of a wall thickness of the at least one airway comprises a wall thickness D of a substrate wall between two adjacent airways of the plurality of airways, the range of D being 0.1 mm to 2.5 mm; and the wall thickness of the at least one airway comprises the wall thickness L of a substrate wall between an outermost airway of the plurality of airways and an outer sidewall of the aerosol generating substrate, the range of L being 0.1 mm to 3.5 mm.   
     
     
         5 . The aerosol generating substrate of  claim 1 , wherein at least one of an inside of the aerosol generating substrate and an outer sidewall of the aerosol generating substrate is provided with the at least one airway. 
     
     
         6 . The aerosol generating substrate of  claim 5 , wherein at least one of:
 the at least one airway has the cross section perpendicular to the length direction of the aerosol generating substrate,   a shape of the cross section of the at least one airway provided inside the aerosol generating substrate comprises a circular shape, an elliptical shape, a runway shape, a polygonal shape, and a special shape, and   a shape of the cross section of the at least one airway provided in an outer sidewall of the aerosol generating substrate comprises a semi-circular shape, a semi-elliptical shape, a trapezoidal shape, a polygonal shape, and a special shape, or a shape of the cross section of the at least one airway provided in an outer sidewall of the aerosol generating substrate is the same as a local shape of the cross section of the at least one airway provided inside the aerosol generating substrate.   
     
     
         7 . The aerosol generating substrate of  claim 5 , wherein at least one of:
 the at least one airway has a cross section perpendicular to the length direction of the aerosol generating substrate,   an area of the cross section of the at least one airway provided inside the aerosol generating substrate is 0.0019 mm 2  to 30 mm 2 , and   an area of the cross section of the at least one airway provided in an outer sidewall of the aerosol generating substrate is 0.001 mm 2  to 55 mm 2 .   
     
     
         8 . The aerosol generating substrate of  claim 1 , wherein the at least one airway comprises a plurality of airways,
 wherein an inside of the aerosol generating substrate is provided with the plurality of airways,   wherein airways of the plurality of airways are distributed on a plurality of trajectory lines,   wherein airways of the plurality of airways on a single trajectory line of the plurality of trajectory lines are linearly arranged along a first direction,   wherein the plurality of trajectory lines are arranged along a second direction, and   wherein the first direction and the second direction are not in parallel.   
     
     
         9 . The aerosol generating substrate of  claim 8 , wherein the airways on the plurality of trajectory lines are formed in the aerosol generating substrate in a uniform distribution. 
     
     
         10 . The aerosol generating substrate of  claim 8 , wherein the airways on a single trajectory line are linearly arranged along the first direction, and
 wherein the plurality of trajectory lines are arranged along the second direction perpendicular to the first direction.   
     
     
         11 . The aerosol generating substrate of  claim 8 , wherein the airways on a single trajectory line are arranged along a circumferential direction surrounding a center of the aerosol generating substrate, and
 wherein the plurality of trajectory lines are concentrically arranged along a radial direction of the aerosol generating substrate.   
     
     
         12 . The aerosol generating substrate of  claim 10 , wherein the airways on a single trajectory line are repeatedly arranged, and
 wherein apertures of the airways on each trajectory line of the plurality of trajectory lines increase or decrease radially outward along the aerosol generating substrate.   
     
     
         13 . The aerosol generating substrate of  claim 10 , wherein the airways on a single trajectory line are repeatedly arranged, and
 wherein a distance between the airways on two adjacent trajectory lines of the plurality of trajectory lines increases or decreases radially outward along the aerosol generating substrate.   
     
     
         14 . The aerosol generating substrate of  claim 1 , wherein the at least one airway comprises a plurality of airways,
 wherein an inside of the aerosol generating substrate is provided with the plurality of airways, and   wherein airways of the plurality of airways are randomly distributed.   
     
     
         15 . The aerosol generating substrate of  claim 1 , wherein the at least one airway comprises a plurality of airways,
 wherein an inside of the aerosol generating substrate is provided with the plurality of airways,   wherein airways of the plurality of airways are distributed in various regions inside the aerosol generating substrate, or an inside of the aerosol generating substrate is provided with a first region and a second region, and the airways of the plurality of airways are distributed in the first region.   
     
     
         16 . An aerosol generating article, comprising:
 the aerosol generating substrate of  claim 1 ;   a function segment arranged at one end of the aerosol generating substrate along the length direction, the function segment comprising a filtering segment configured to filter aerosols; and   an outer wrapping layer wrapping circumferential outsides of the function segment and the aerosol generating substrate.   
     
     
         17 . The aerosol generating article of  claim 16 , wherein the function segment comprises a cooling segment located between the filtering segment and the aerosol generating substrate.