Tobacco – Smoke separator or treater – By adding constituent to smoke stream
Patent
1980-08-18
1983-01-04
Millin, V.
Tobacco
Smoke separator or treater
By adding constituent to smoke stream
131341, 131343, 131344, 131345, 131361, 131362, 131365, 131 95, A24D 302, A24D 306
Patent
active
043668267
ABSTRACT:
A smoke-filter rod comprises a body of rod form consisting or having as at least major constituent a thermoplastics cellulose acetate or polypropylene smoke-filtration material, preferably of a fibrous or filamentary nature, and wrapped in a plugwrap comprising at least 50%, suitably at least 90%, by weight of fibres or filaments of, respectively, cellulose acetate or polypropylene material of substantially the same chemical identity as said major constituent of the filtration material, said plugwrap being bonded to said body and having a permeability for air of not less than 10,000 Coresta units. The bonding is by an agent which is a bonding agent for the material of said plugwrap and said filtration material, suitably triacetin in the case of cellulose acetate. Portions of such filter rod can be subjected to a hot-shaping process. For making such filter rod, a continuous tow or web of the smoke-filtration material may be impregnated with a bonding agent and gathered into a rod-form body and wrapped in continuous fibrous or filamentary plugwrap, whereby said plugwrap is bonded to said rod-form body. The rod formation and wrapping may be carried out by feeding the filtration material and plugwrap together to a garniture.
REFERENCES:
patent: 2688380 (1954-09-01), MacHenry
patent: 3079978 (1963-03-01), Cobb, Jr. et al.
patent: 3111702 (1963-11-01), Berger
patent: 3190294 (1965-06-01), Dunlap
patent: 3361137 (1968-01-01), Watson
patent: 4034765 (1977-07-01), Van Hall
British-American Tobacco Company Limited
Millin V.
LandOfFree
Smoke filtration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Smoke filtration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoke filtration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1579376