Smoking article filter

Abstract

A smoking article filter ( 3 ) comprises an additive-containing member ( 2 ) to selectively release additive inside the filter and an additive-transfer member ( 5 ) to transfer additive released from the additive-containing member to the periphery of the filter to indicate that the additive has been released.

1 . A smoking article filter, comprising:
 filter material;   an additive-containing selective release member configured to selectively release additive into the filter material; and   an additive-transfer member configured to transfer additive released from the additive-containing selective release member to the periphery of the filter to indicate that the additive has been released,   wherein the additive-transfer member comprises a wicking material adapted to wick the additive more rapidly than the filter material and wherein a region of the additive-transfer member is provided at the periphery of the filter.   
     
     
         2 . The smoking article filter as claimed in  claim 1 , wherein:
 the additive-containing selective release member contains a fluid additive; and   the wicking material is configured to transfer additive by capillary action.   
     
     
         3 . The smoking article filter as claimed in  claim 1 , wherein said region of the additive-transfer member is configured to undergo a colour change in response to presence of the additive. 
     
     
         4 . The smoking article filter as claimed in  claim 1 , wherein the additive-transfer member comprises a cylinder of wicking material. 
     
     
         5 . The smoking article filter as claimed in  claim 1 , wherein the additive-transfer member comprises a strip of wicking material, and wherein said region of the additive-transfer member comprises at least one of an end face and a side edge of said strip. 
     
     
         6 . The smoking article filter as claimed in  claim 1 , further comprising a peripheral end face, and wherein the additive-transfer member is configured to transfer additive released from the additive-containing selective release member to the peripheral end face. 
     
     
         7 . The smoking article filter as claimed in  claim 1 , further comprising:
 first and second additive-containing selective release members to selectively concurrently release first and second additives inside the filter;   wherein the additive-transfer member is configured to transfer the second additive released from the first additive-containing selective release member to the periphery of the filter to indicate that the first additive has been released; and   wherein the first additive is unsuitable for at least one of:   being transferred by the additive-transfer member; and providing a visual indication that the first additive has been released.   
     
     
         8 . The smoking article filter as claimed in  claim 1 , further comprising:
 first and second additive-containing selective release members to selectively release first and second additives inside the filter; and   a connecting member connecting the additive-containing selective release members together,   wherein the connecting member comprises:
 a first additive-transfer member to transfer first additive from the first additive-containing selective release member to the periphery of the filter to indicate that the first additive has been released; and 
 a second additive-transfer member to transfer second additive from the second additive-containing selective release member to the periphery of the filter to indicate that the second additive has been released. 
   
     
     
         9 . The smoking article filter as claimed in  claim 1 , wherein a portion of a filter plug of the smoking article filter constitutes the additive-transfer member. 
     
     
         10 . The smoking article filter as claimed in  claim 1 , further comprising a window configured to provide a view of a region to which the additive released from the additive-containing selective release member is transferred by the additive-transfer member. 
     
     
         11 . The smoking article filter as claimed in  claim 1 , further comprising a tape comprising the additive-containing selective release member and the additive-transfer member. 
     
     
         12 . A smoking article filter, comprising:
 an additive release component configured to selectively release additive inside the filter; and   an additive-transfer member configured to transfer additive released from the additive release component to a visible region of the filter to indicate that the additive has been released.   
     
     
         13 . An arrangement of smoking article additive-containing selective release members, comprising first and second additive-containing selective release members configured to selectively release additive, and a connecting member connecting the first and second additive-containing selective release members together, wherein the connecting member comprises an additive-transfer member to transfer additive released from one of said additive-containing selective release members to a predetermined region of the connecting member, for indicating that additive has been released. 
     
     
         14 . The arrangement as claimed in  claim 13 , wherein the first and second additive-containing selective release members are configured to releasably contain fluid additive and wherein the additive-transfer member comprises a wicking material configured to transfer fluid additive by capillary action. 
     
     
         15 . The arrangement as claimed in  claim 13 , further comprising two layers forming the connecting member and which are sealed together to form pocket regions for containing the additive. 
     
     
         16 . The arrangement as claimed in  claim 15 , wherein the additive-transfer member is held by the sealing between the two layers. 
     
     
         17 . The arrangement as claimed in  claim 15 ,  wherein the additive-transfer member is narrow in relation to the layers and is positioned alongside the pocket regions. 
     
     
         18 . A smoking article filter rod, comprising a segment of the arrangement claimed in  claim 13 , wherein said segment includes at least one of said additive-containing selective release members. 
     
     
         19 . The smoking article filter as claimed in  claim 4 , wherein the cylinder of wicking material is a thread.