Cooling element

Abstract

The present invention provides a cooling element ( 4 ) with a longitudinally extending core of cellulose acetate material having a profiled outer surface including a plurality of grooves or channels ( 9 ) which extend the full length of the core for use with a smoking article such as a tobacco heated product ( 1 ) or heat-not-burn product ( 1 ).

1 . A cooling element comprising a longitudinally extending core of cellulose acetate material; the longitudinally extending core of cellulose acetate material having a profiled outer surface including a plurality of grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the core. 
     
     
         2 . A cooling element according to  claim 1  further comprising an outer wrapper engaged around the longitudinally extending core which defines with the profiled outer surface of the core a plurality of covered grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the tubular core. 
     
     
         3 . A cooling element comprising a longitudinally extending tubular core of cellulose acetate material; the longitudinally extending tubular core of cellulose acetate material having an inner surface which defines a bore extending longitudinally through the full length of the tubular core, and a profiled outer surface including a plurality of grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the tubular core. 
     
     
         4 . A cooling element according to  claim 3  further comprising an outer wrapper engaged around the longitudinally extending tubular core which defines with the profiled outer surface of the core a plurality of covered grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the tubular core. 
     
     
         5 . A cooling element according  claim 1  wherein the profiled outer surface defines 3 to 10, for example 3 to 7, for example 4 to 6, for example 5, channels of depth between 0.5 mm and 2.6 mm. 
     
     
         6 . A cooling element according to  claim 1  wherein the depth of each channel is from 0.5 to 2.5 mm, for example 0.8 to 2.2 mm, for example 1.30 to 2.1 mm, preferably from 1.35 to 2 mm, for example 1.4 to 1.9 mm. 
     
     
         7 . A cooling element according to  claim 1  wherein the length of the cooling element is from 5 to 35 mm, e.g. 10 to 2 5mm, e.g. 15 to 20 mm, e.g. 18 mm. 
     
     
         8 . A cooling element according to  claim 1  wherein the circumference of the cooling element is from 12 to 30 mm, e.g. 15 to 28 mm, more preferably 17 to 25 mm. 
     
     
         9 . A cooling element according to  claim 1  wherein the cooling element is thermoformed from cellulose acetate. 
     
     
         10 . (canceled) 
     
     
         11 . A cooling element for a tobacco heated product and/or HNB product comprising a longitudinally extending tubular core of cellulose acetate material; the longitudinally extending tubular core of cellulose acetate material having an inner surface which defines a bore extending longitudinally through the full length of the tubular core, and a profiled outer surface including a plurality of grooves or channels which extend the full length of the tubular core. 
     
     
         12 . A cooling element for a tobacco heated product and/or HNB product comprising a longitudinally extending core of cellulose acetate material; the longitudinally extending core of cellulose acetate material having a profiled outer surface including a plurality of grooves or channels which extend the full length of the tubular core. 
     
     
         13 . A smoking article (e.g. Tobacco heating product, HNB product) comprising a cooling element according to  claim 1 . 
     
     
         14 . A smoking article comprising: a hollow tubular element, the hollow tubular element having bore of diameter A; and, abutted thereto, a cooling element comprising a longitudinally extending tubular core of cellulose acetate material; the longitudinally extending tubular core of cellulose acetate material having an inner surface which defines a bore extending longitudinally through the full length of the tubular core, and a profiled outer surface including a plurality of grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the tubular core; wherein diameter A is sufficiently large such that a part of the bore of the hollow tubular element is in register with a part of the bore of the cooling element, and a part of the bore of the tubular element is in register with at least a part of a (or preferably each) groove (channel). 
     
     
         15 . A smoking article comprising: a hollow tubular element, the hollow tubular element having bore of diameter A; and, abutted thereto, a cooling element comprising a longitudinally extending core of cellulose acetate material; the longitudinally extending core of cellulose acetate material having a profiled outer surface including a plurality of grooves or channels of depth 0.5 to 2.6 mm which extend the full length of the core; wherein diameter A is sufficiently large such that a part of the bore of the tubular element is in register with at least a part of a (or preferably each) groove (channel). 
     
     
         16 . A smoking article according to  claim 14  where the hollow tubular element is formed from cellulose acetate. 
     
     
         17 . A smoking article according to  claim 14  where the hollow tubular element has walls of thickness 0.3 mm to 5.5 mm, for example 0.4 mm to 5.5 mm, for example 0.4 to 1.0 mm or 1.0 to 5.5 mm. 
     
     
         18 - 20 . (canceled)