Additive release component

A filter for a smoking article comprising an additive release component, wherein the additive release component is deformable and configured to provide:

• an additive release aperture through which additive may be released;
• an outer wall section;
• an inner wall section that defines an additive holding chamber within which additive is held;
• and at least one channel between the inner and outer wall sections to allow airflow through the component;
• wherein the component is configured to transmit a compressive force applied to the outer wall section to the inner wall section and to open the additive release aperture;
• wherein the aperture is sealed to prevent the release of additive through said aperture prior to a first application of compressive force to the outer wall section, and wherein the first application of compressive force to the outer wall section opens the aperture to allow release of additive through said aperture;
• and wherein the aperture closes once the compressive force is no longer applied, so that substantially no additive is released until a compressive force is applied once more.

A smoking article comprising an additive release component, wherein the additive release component is deformable and configured to provide:

• an additive release aperture through which additive may be released;
• an outer wall section;
• an inner wall section that defines an additive holding chamber within which the additive is held;
• and at least one channel between the inner and outer wall sections to allow airflow through the component;
• wherein the component is configured to transmit a compressive force applied to the outer wall section to the inner wall section and to open the additive release aperture;
• wherein the aperture is sealed to prevent the release of additive through said aperture prior to a first application of compressive force to the outer wall section, and wherein the first application of compressive force to the outer wall section opens the aperture to allow release of additive through said aperture;
• and wherein the aperture closes once the compressive force is no longer applied, so that substantially no additive is released until a compressive force is applied once more.