Tobacco – Smoke separator or treater – Having a polymer
Patent
1994-03-08
1999-09-21
Mullis, Jeffrey
Tobacco
Smoke separator or treater
Having a polymer
521 81, A24D 300, A24D 308, A24D 314, A24D 316
Patent
active
059540591
ABSTRACT:
An extruded filtration material which is degradable and comprises either a plastics material or an inorganic material having a melting point above the operating temperature, a polysaccharide expansion medium, a binder and water. These ingredients are fed to an extruder and subjected to an extrusion process which involves a pressure reduction, upon extrusion from the exit die, of up to about 70 bars so that swelling of the extrudate occurs to give a cellular structure. When exposed to the natural weather conditions, tobacco smoke filter elements comprising such material degrade without leaving a fused amalgamation of plastics or inorganic material.
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Beven John Lawson
Case Paul David
Coleman Martin
Greig Colin Campbell
White Peter Rex
British-American Tobacco Company Limited
Mullis Jeffrey
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