IMPROVEMENTS RELATING TO TOBACCO-SMOKE FILTERS

1,208,061. Cigarette filter. BRITISHAMERICAN TOBACCO CO. Ltd. 31 Dec., 1968 [3 Jan., 1968], No. 479/68. Heading A2C. A tobacco-smoke filter comprises a mass of fibres and/or filaments of polyurethane material. The filter may also comprise conventional filter material, and additives such as active ch...

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Bibliographic Details
Main Author HENRY GEORGE HORSEWELL
Format Patent
LanguageEnglish
Published 07.10.1970
Subjects
CIGARETTES
CIGARS
HUMAN NECESSITIES
MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
MOUTHPIECES FOR CIGARS OR CIGARETTES
SMOKERS' REQUISITES
TOBACCO
TOBACCO SMOKE FILTERS
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Summary:1,208,061. Cigarette filter. BRITISHAMERICAN TOBACCO CO. Ltd. 31 Dec., 1968 [3 Jan., 1968], No. 479/68. Heading A2C. A tobacco-smoke filter comprises a mass of fibres and/or filaments of polyurethane material. The filter may also comprise conventional filter material, and additives such as active charcoal, vermiculite, expanded perlite, silica gel, comminuted organic foam material, polyurethane imines and water. The fibres and/or filaments may be bonded together with a bonding agent such as themoplastic or pressure-sensitive synthetic resin or a low-melting point salt.
Bibliography:Application Number: GB19680000479