Essentra Filter Products Development Co. Pte. Ltd

Filtrona Filter Products Development Co.pte.ltd

Filtrona Plc

Filtrona Development Co. Pte. Ltd.

Ahmad Fashihul Lisan

James D Reed

Roy Alingalan

Paul Francis Clarke

Paul Clarke

Antony Mccormack

Sudirman Widiarto

Sulistyo Widodo

Pakorn Aewskulrat

Ronald Paul Morris

Kenneth Tully

Elizabeth Gerringer

A stand alone tobacco smoke filter or filter element for use with a smoking article comprising a wrapper engaged around a longitudinally extending core of tobacco smoke filtering material, wherein at least one end of the wrapper extends beyond the end of the core around which it is engaged, to define a cavity at the end of the filter which faces the smoking article in use.

Tobacco smoke filter

A tobacco smoke filter or filter element comprising a stiff outer wrapper engaged around a downstream thermoformed core of tobacco smoke filtering material and a further core longitudinally aligned therewith; the downstream thermoformed core having a profiled outer surface which defines with the stiff outer wrapper at least one longitudinally extending channel which extends the length of the downstream core.

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.

The invention provides a method of producing a tobacco smoke filter or filter element comprising: &#x2022; heat treating a continuously advancing longitudinally extending strand of material; &#x2022; cooling the heat treated continuously advancing strand; and &#x2022; forming a longitudinally extending outer layer of tobacco smoke filtering material around the continuously advancing strand, to form a continuously advancing rod comprising a longitudinally extending strand () of material and a longitudinally extending outer layer () of tobacco smoke filtering material engaged around the longitudinally extending strand (). An apparatus for carrying out the method, and products of the method, are also provided.

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Sidoarjo, Indonesia

Ahmad Fashihul Lisan