Tobacco smoke filter
AssigneeEssentra Filter Products Development Co. Pte. Ltd.
InventorsAhmad Fashihul LISAN, Roy ALINGALAN, Sulistyo WIDODO, Antony MCCORMACK
Life of this patent
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Abstract
A tobacco smoke filter or filter element including a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core; wherein the core further includes a plasticiser in an amount of 17 to 19% by weight of the tobacco smoke filtering material.
Claims26
A tobacco smoke filter or filter element comprising a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core;
- wherein the core further comprises a plasticiser in an amount of 17 to 19% by weight of the tobacco smoke filtering material.
(canceled)
A method of production of a tobacco smoke filter or filter element comprising a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core;
- wherein the core further comprises a plasticiser in an amount of 15.5 to 21% by weight of the tobacco smoke filtering material, for example 17 to 19% by weight of the tobacco smoke filtering material;
- the method comprising:
- continuously drawing the tobacco smoke filtering material from a single source;
- applying plasticiser to the filtering material;
- and
- thermoforming the tobacco smoke filtering material to which plasticiser has been applied around a shaped die to form a continuous tube.
A tobacco smoke filter or filter element comprising a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 15 mm which includes a channel which extends longitudinally from an end of the core;
- wherein the core further comprises a plasticiser in an amount of 15 to 21% by weight of the tobacco smoke filtering material.
A tobacco smoke filter or filter element comprising a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core;
- wherein the core further comprises a plasticiser in an amount of 15 to 20% by weight of the tobacco smoke filtering material, and wherein the tobacco smoke filtering material is of (wall) density in the range of 0.25 to 0.41 g/cc, for example 0.35-0.41 g/cc.
Dependencies are inferred from the claim text.