NOTE FOR: Mr E A A Bruell
Mr R J Pritchard
Mr A M Heath
HH FILTER
After an initial hi*gh level of product
development and supporting
theoretical research, R&D Hamburg stopped work on
the HH
design of filters in late 1981 because marketing
research,
with low delivery smokers, showed them to be too
strong.
There are three versions of the HH filter. Each
have the
same basic construction of four grooves that
extend the
length of the filter, but they differ
significantly in design
detail and smoking performance:
HH-1 Vi rtual ly Non-compensatabl e
HH-Il Actron-type inelastic
HH-111 "Switching-type" - highly elastic
Although HH-III is significantly more elastic
(i.e. increased
yield with increased puff volume) than Actron,
deliberate or
fortuitous blocking of the grooves does not give
such a
pronounced increase in yield as does Actron. It
is, in fact,
similar in performance to the St Moritz product
which uses the
Filtrona Astra filter with 22 grooves.
Thus, if the PM/Copeland holder were to be adopted
by Government
bodies the effect on 1 mg products constructed
with the four
different filter types would be approximately as
follows:
Tar Delivery in mg.
Filter
Actron
Astra
HH
Conventional
Standard FTC/DIN
Holder
1
1
1
PM/Copeland
Holder
12
3
3
1
cc
CTD/ . .
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November 1999


Smoking Behaviour Trial
In September 1983 a small smoking behaviour trial
was undertaken
by BATCF with an untrained panel of 32 HB smokers
from the
Arensberg factory.
The objective was t.o see if the pattern
when smokers switched from a 3 mg
product to a 3 mg HH-III product.
both products, which had the same
compared with the smoking pattern
.own brand" HB.
of smoking changed
conventional ventilated
The smoking pattern with
blend (30% ET), was also
when smokers used their
The broad finding was that when smoking the HH-III
filter
product there was no significant difference in:
Puff volume
Puff duration
Puff number
Whole smoking time
(52 - 56 ml)
(2.1 - 2.2 sec.)
(tv 12)
When questioned as to the smoking sensation of the
HH product
in comparison with the conventional 3 mg product,
the HH
was pronounced to be significantly "less mild",
"stronger",
"sharper' and "more tart".
Higher tartness is thought to be mainly a response
to the
higher nicotine/tar ratio - which is a common
feature of
elastic products.
Comparison of HH, Conventional and Actron Filters
In 1982 an internal expert panel was used to
compare the
filter designs (a) HH-III, (b) Actron, and (c)
Conventional
when used on each of three blend specifications,
two of them
being BARCLAY blends and construction:
I I I I
JBlend I Delivery I Ventilation[
1 BARCLAY 85 mm I I mg 1 72% 1
1 1 1 1
1 BARCLAY 100 mm 1 3 mg 1 65% 1
1 1 1 1
ICORTINA (early 1 3 mg 62%
version)
CTD/...
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As Judged by the panel scores (which I have on
file) for:
Draw effort (not thought to be a reliable
parameter)
Mouthful
Impact
Irritation
Flavour amplit'ude
the overall conclusions were:
BARCLAY blend I mg - HH was somewhat nearer to
Actron on
impact and irritation, but nearer to the
conventional filter in mouthful and
f 1 avour .
BARCLAY blend 3 mg - HH was significantly nearer
(75-80%)
to the conventional filter on most scores.
CORTINA blend 3 mg - HH was about mid-way between
the Actron
and conventional filters.
This trial emphasised the fact that filter designs
cannot be
judged in isolation from the blend and delivery
levels.
GR&DC Development
Recently, as part of Project SMITH, a GR&OC
version of HH-III
was developed and tested. It proved to be the most
elastic
product yet tested:
Puff Volume Tar Nicotine Puff No.
35 ml 1 .4 0.44 9.0
50 ml 7.3 0.87 9.4
Samples were sent to Hamburg and they have
confirmed the
performance, but a report has not yet been issued.
Comparison of Blends
In September this year I mg. BARCLAY-type products
were
formulated with three tobacco blends - HB, Auslese
and
BARCLAYS - and compared against Marlboro for
mildness/strength
by an expert panel. The results, which are given
below,
again clearly demonstrate the importance of
blend:-
CTD/...
CX)
<=
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BATCo document for Province of British Columbia 10
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H9
k 13 a'a"'k
56"'a'95 6L-~
-3 1
Interesti ngli, when the BARCLAYS bl end was us ed
i n a sta ndard
HB construction the product was generally found to
be too
strong to smoce. The panel score is al so
indicated in the
chart above.)
Conclusion
The 'switching' HH-III version of fil ter of fers
a reasonable,
but certa i n I y not whol 1 y c, ampa rab 1 e , a
1 ternat i ve to the
Actron filter - when judged against overal 1
smoking sensation.
Both f i Iters exhibit a similar degree of swi r1
and the
conclusion, tierefore, is that only blend
modifications (in
particular en.-tanced nicotine) can hope to help
bridge the gap
between the best HH product and the current
commercial BARCLAY.
It is the cur:-ent view of BATCF and GR&DC that it
is highly
unlikely that any radically new design of filter
(shaped
ends, interna' tubes, plastic simulations etc)
will be able
to match the inique performance of the Actron
filter. The
subject is, hawever, being considered this week at
a 'Swirl
Conference in Louisville and this view may need to
be modified
in the light cf more recent developments.
L C F BLACKMAN
5 October 1984
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BATCo document for Province of British Columbia 10
November 1999