Group Research & Development Centre,
British-American Tobacco Co. Ltd.,
SOUTHAMPTON.
DC/KJG/CAL/46D-6 llth September 1979.
A COMPARISON OF THE HUMAN SMOKING PATTERNS
OF THREE CIGARETTE DESIGNS
(Repo rt No. RD.1698 Restricted)
SUMMARY AND RECOMMENDATIONS
Smokers from GR&DC were recruited to smoke three
types of experimental
cigarettes. Each cigarette used a particular
design feature to achieve
similar delivery levels (standard smoking: TPM 18
mg, Nicotine 1.1 mg).
These were:
highly efficient filter
highly permeable paper
ventilated filter.
Smoking patterns were recorded and the puff
duplicator used to estimate
actual deliveries of TPM, nicotine and carbon
monoxide. The main conclusions
are:
The cigarette with the highly efficient filter was
smoked less
intensely and delivered less TPM. and nicotine but
more carbon
monoxide than the other two.
The cigarette with highly permeable paper
delivered marginally
more smoke, TPM and nicotine but less carbon
monoxide than the
cigarette with a ventilated filter.
These results suggest that the cigarette with a
highly efficient
filter is less likely to be acceptable than the
other two designs. However
the experiment should be repeated with cigarettes
of lower tar deliveries.
BATCO document for Province of BritiSh ColUrnbia 3
November 1999


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BATCo document for Province of British Columbia 3
November 1999


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INTRODUCTION
Most cigarettes currently available employ design
features which
are selected so that the deliveries do not exceed
target levels when the
cigarettes are smoked under standard conditions.
There are three major
design features, which can be used either
individually or in combination,
to manipulate delivery levels; filtration, paper
permeability and
filter-tip ventilation. All of these are effective
methods of matching
the deliveries to target levels when smoked by
machine. Smokers, however,
might find that some combinations were preferred,
particularly if they
are smokers who tend to compensate for any
reduction in delivery which
is achieved by the design features described
above. There were indications
from previous studies, using cigarettes with
comparatively high deliveries,
that smokers did not appear to work harder to
overcome a high draw
resistance (1), but increased the amount of smoke
taken from a ventilated
filter-tip cigarette when compared with the same
type of cigarette
with an unventilated filter-tip (2).
We have, therefore, tested the three sorts of
design using cigarettes
which have similar deliveries (in the middle tar
range) when smoked by
chine. A panel of smokers was recruited and a
comparison made of the
smoking patterns and, by puff duplication, the
deliveries taken from
each design.
METHODS
(a) Cigarettes
Cigarettes were manufactured for this study with
the specifications
and machine-smoked deliveries shown in Table 1. A
commercially available
brand, STATE EXPRESS 555 FILTER KINGS, was
included in the experimental
design, as it was a brand smoked regularly by all
members of the panel.
BATCo document for Province of BritiSh Columbia 3
November 1999