DSFH/,TRW 9th September, 1959.
ITR T Y PRIVATE & -COMTFIDENTIAL.
TOBACCO AS A FILTZR im-DIMI FOR
C I G-A R"ITTE-S". - - - - - - - - "
Extensive tests have been carried out to
investigate the possibility of using finely cut
tobacco
for the manufacture of filter rods for cigarettes.
These tests have shown that the use of such
filters
presents possibilities of importance. Some of the
advantages and attributes of such a filter are:-
(a) Great;,L_enhanced Tobacco Taste and
U-rea~-4r 8~6-
.p~EjGji~'E~:L - -
tn:d~qg.
A criticism of normal filter
material has always been that the
smoke drawn through such a filter is
insipid and tasteless. The -se of
tobacco as a filter material gives the
smoke considerably greater tobacco
character than that which is rassed
through a normal filter. The nature
of the tobacco used as a filter has a
pronounced influence on the taste.
This fact opens up a large field of
possibilities: the high grade tobacco
used in the filtqr tip ~May ii.,rrove the
smohing qualities of a lo,.r grale blend
or disguise the unpleasant ebaracter
of some local. type of leaf.
Alternatively, the use of Ori.ental
leaf in the filter tip im--Prts a
pronounced Oriental flavour to the
smoke. It is thus possible that it
may be found preferable in blended or
Aperican-ty:)e ci-arettes to usn a
filter tip riade of Oriental t'-)~)icco
and to onit the usual percent-Ee of
Oriental leaf from the blend. A
large number of combinations ray be
tried, such as the use of an Oriental
filter tip with a Virginia flue-cured,
cigarette, the use of a Virginia flue-
cured tip with a blended cigarette,
the use of a fermented blac'-c filter
tip with a Virgi 'nia or blended
cigarette or vice versa. Furthermorc,
experiments may be made flavourinr~ the
tobacco used for the filter rod '3ut
not necessarily that used in the
cigarette. This would make it possible
to experiment vith flavours whic-'n have
an unsuitable aroma when hurnt but w!lich
might affect the smoke 4.n a pleasing
way when used on tile tobacco in the tip.
c0
(2) cc
NJ
BATCo document for Province of British Columbia 29
October 1999


(b) gaLsq_q;~ LiqMJZgL(It~,.?:~e.
Filter rods made accordinr, to these
details may be made on most Cigarette
Making Machines and filter tipped
cigarettes, using these rods, may be
made up on any conventional filter
tipping unit.
In territories where ir~,.port
restrictions or lack of local manu-
facturing facilities make the use of
materials such as cellulose acetate
or crimped paper difficult or expensive
or impossible, this type of filter may
be readily made.
(c) Good..ZL1tratjon jqLjLiqi~eijcy.
This compares favourably -ith a
cellulose acetate filter of 5110r,000
denier of the same length Fhen the leaf
tobacco to be used in the filter is
converted into rag at 200 cuts -1--er Inch.
Finer cuts incrpase the filtration
efficiency but at the same time also
increase the dra- resistance. For
this reason it way be faund that the
optimum cuts to the inch are 20P.
For acceDtable dra,.! resistarce us'-ne
this tobacco, it has been found tliaE
the filter rods should have a density
of arproximately .39 9. 1,er cc.
For instance, filter rods -iieasrring
90 mm. x 25-75 mm. vay be nade at
15 to the ounce. The raper used
as a i-.rrarper for the filter rods may
be Crompton's Verge .2122.
(d) Attract ive.ARZ~qjqrsa-ic e aq(kA4)As Value
The appearance of cigarettes made
up with a tobacco filter is particularly
attractive when the tobacco used in the
filter is of a sharply contrasting shade
to that used in the cigarette; for
instance, the use of a bright Flue-cured
tip on a blended cigarette. There
would seem to be ~iuch score in
advertising such cigarettes; its
enhanced and "full" tobacco taste, its
effective but unobtrusive smoke
filtration, the fact that its composition
consists entirely of tobacco, are some
of the points which r-Aght be used.
cc
cc
N-)
BATCo document for Province of BritiSh Columbia 29
October 1999