A method for manufacturing a heat source

Abstract

The invention relates to a method for the manufacturing of a combustible heat source ( 1 ) for an aerosol forming article, comprising: —Providing a mould ( 100 ) defining a cavity ( 101 ) having a first opening ( 102 ); —Providing a chamber ( 106 ) above said cavity ( 101 ), the chamber ( 106 ) having a second opening ( 108 ) fluidly connected to the first opening ( 102 ); —Placing a particulate component ( 104 ) in the chamber ( 106 ); —compressing the particulate component ( 104 ) in the chamber ( 106 ) up to a first pressure so that it forcedly flows into said cavity ( 101 ); and —compressing the particulate component ( 104 ) in the cavity ( 101 ) up to a second pressure higher than said first pressure to form the combustible heat source ( 1 ).

1 . A method for the manufacturing of a heat source for an aerosol forming article, comprising:
 providing a mould defining a cavity having a first opening;   providing a chamber above said cavity, the chamber having a second opening fluidly connected to the first opening;   placing a particulate component in the chamber;   compressing the particulate component in the chamber up to a first pressure so that it forcedly flows into said cavity;   compressing the particulate component in the cavity up to a second pressure higher than said first pressure to form the heat source; and   between the step of compressing the particulate component at a first pressure and the step of compressing the particulate at a second pressure, applying no pressure, with the exception of the atmospheric pressure, to the particulate component in the chamber for a predetermined time.   
     
     
         2 . A method for the manufacturing of a heat source for an aerosol forming article, comprising:
 providing a mould defining a cavity having a first opening;   providing a chamber above said cavity, the chamber having a second opening fluidly connected to the first opening;   placing a particulate component in the chamber;   compressing the particulate component in the chamber up to a first pressure so that it forcedly flows into said cavity;   compressing the particulate component in the cavity up to a second pressure higher than said first pressure to form the heat source;   wherein said first pressure is comprised between about 0.005 MegaPascal and about 0.5 MegaPascal.   
     
     
         3 . A method for the manufacturing of a heat source for an aerosol forming article, comprising:
 providing a mould defining a cavity having a first opening;   providing a chamber above said cavity, the chamber having a second opening fluidly connected to the first opening;   placing a particulate component in the chamber;   compressing the particulate component in the chamber up to a first pressure so that it forcedly flows into said cavity;   compressing the particulate component in the cavity up to a second pressure higher than said first pressure to form the heat source;   wherein the heat source has a length between 2 mm and 20 mm.   
     
     
         4 . The method according to  claim 2 , wherein, between the step of compressing the particulate component at a first pressure and the step of compressing the particulate at a second pressure, the method further comprises:
 Applying no pressure, with the exception of the atmospheric pressure, to the particulate component in the chamber for a predetermined time.   
     
     
         5 . The method according to  claim 1 , further comprising:
 Providing a fluid flow in said chamber to push said particulate component towards said cavity.   
     
     
         6 . The method according to  claim 1 , further comprising:
 Providing a first mechanical pressing device to compress the particulate component towards the cavity.   
     
     
         7 . The method according to  claim 1 , further comprising:
 Sensing a weight of particulate component present inside the cavity.   
     
     
         8 . The method according to  claim 7 , further comprising:
 Interrupting the compression inside the chamber when said weight of particulate component in said cavity is above a set threshold.   
     
     
         11 . The method according to  claim 7 , further comprising:
 Slowly increasing a pressure during the compression step inside said chamber till the weight of the particulate component inside said cavity reaches a cavity set threshold.   
     
     
         12 . The method according to  claim 1 , wherein said first pressure is comprised between about 0.005 MegaPascal and about 0.5 MegaPascal. 
     
     
         13 . The method according to  claim 1 , wherein the pressure equal to the first pressure is applied for a time interval comprised between about 0.01 seconds and about 2 seconds. 
     
     
         14 . The method according to  claim 1 , wherein said second pressure is comprised between about 1 MegaPascal and about 50 MegaPascal. 
     
     
         15 . The method according to  claim 1 , wherein the pressure equal to the second pressure is applied for a time interval comprised between about 0.01 seconds and about 2 seconds. 
     
     
         16 . The method according to  claim 2 , further comprising:
 Providing a fluid flow in said chamber to push said particulate component towards said cavity.   
     
     
         17 . The method according to  claim 2 , further comprising:
 Providing a first mechanical pressing device to compress the particulate component towards the cavity.   
     
     
         18 . The method according to  claim 2 , further comprising:
 Sensing a weight of particulate component present inside the cavity.   
     
     
         19 . The method according to  claim 18 , further comprising:
 Interrupting the compression inside the chamber when said weight of particulate component in said cavity is above a set threshold.   
     
     
         20 . The method according to  claim 18 , further comprising:
 Slowly increasing a pressure during the compression step inside said chamber till the weight of the particulate component inside said cavity reaches a cavity set threshold.   
     
     
         21 . The method according to  claim 3 , wherein, between the step of compressing the particulate component at a first pressure and the step of compressing the particulate at a second pressure, it includes:
 Applying no pressure, with the exception of the atmospheric pressure, to the particulate component in the chamber for a predetermined time.   
     
     
         22 . The method according to  claim 3 , wherein said first pressure is comprised between about 0.005 MegaPascal and about 0.5 MegaPascal. 
     
     
         23 . The method according to  claim 3 , further comprising:
 Providing a fluid flow in said chamber to push said particulate component towards said cavity.   
     
     
         24 . The method according to  claim 3 , further comprising:
 Providing a first mechanical pressing device to compress the particulate component towards the cavity.   
     
     
         25 . The method according to  claim 3 , further comprising:
 Sensing a weight of particulate component present inside the cavity.   
     
     
         26 . The method according to  claim 25 , including:
 Interrupting the compression inside the chamber when said weight of particulate component in said cavity is above a set threshold.   
     
     
         27 . The method according to  claim 25 , including:
 Slowly increasing a pressure during the compression step inside said chamber till the weight of the particulate component inside said cavity reaches a cavity set threshold.