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, - L , • , , ,: • . ,, . STATUS REVIEW MOTE : Directed flo~s o~ smoke PROJECT PRO,,'-ECT NO : OS. 03. 002 17 FEB. 83 To find out ,wether directed fto~s of smoke (in direction of the cigarette axis and u~der different angles to ,the axis) influence sensoric impressio.s Special attachable cigarette mouthpieces were developed the permeability of the vent zone. Several different mouthpieces with channels variing in ~umber,shape, geome%rical dimension and direction were used. , =.' . ,

,, : RESULTS • = i. 2 cha~nel4mouthpiece ( 30 angle , divergent) = = ::~ o Loc.~&v~rchmes~e¥" 2. t,,,,w~ • .... " " ~ j , • Figure i : orientation of channels in the 2 channel mouthpiece ,¢~-~ • ". i : /: ,~ ::TWo highly concentrated laminar ~lo~s o~ smoke are generated by the • ' L~I~!''~-- 12cha"nel mouthpiece. Figure 2 shows a picture of the two sharply bundled 3 % • ,= I / | Figure E : flo~ distributio~ generated by the two channel mouthpiece \

,r . -., i¸,I '. / ,~' " r'¸ L ,~ ,".* # ) L¸ .~ The influence of the mouthpiece on the cigarette dra~ resistance is negligible. Twopeeferred orientations of the 2 c~nnel mouthpiece were found in a sensoric test : a, Channel Position horizontal b. Channel position vertical \ lensoric differences were mainly found in the items "mouthfull feeling" and "impact" (results in arbitrary units ): - L~ mouthful1 feelin~ impact vertical I 5 horizontal 5 1 • Inthe following only these two items will be reported, , / r ~ ~: . . ...:.. ,... ' 2. 3,4 channel mouthpiece (30 angle, divergent) ::' ~'~ Figure 3 ~ Orientation of channels in the 3 channel- and 4 channel mouthpiece • ? , ,, ".~ : : ~ , : : ""

' r These ~outhpieces also show a number of sharply bundled streams of smoke. Two different orientations were found for the 3 Channel mouthpiece: a. 2 channel openings at the top, i opening at the bottom b. I channel opening at the top, ~ openings at the botto~ Hodependence of sensoric impression on orientation was found for the ". 4 channel mouthpiece. > The item "~outhfull feeeling " is increasing in regard to the different mouthpieces in the follo~in9 sequence~ " £ channel (vertical)==) 4 channel ===) 3 channel (2 channels at the bottom) ===)3 channel (2 channels at the tap) ===) ~ channel (horizontal) C' ," :, IL~ The item "impact" decreases in the same manner. .... ". '" ...., r~ ~" ~" channel mouthpiece (different angles divergent) " ~ ' ? .=, . As mentioned above, attachable ~ channel ~outhpieces wre also ~ade with ..... ~": diSferent a~gles between Channels in cisarette axis (iO, ~0, ~0 angles).~hoto= ii: i- ~ra~hs o~"~th~ a~c~r~"g ~l~ ~istrib.~ons sh~, that the resulting ~egles ,., ' :.: of the smokes Streams a~e also different. It was found in sensoric tests : i " " " %hat-a~decrease in angles corresponds to a decreasing difference in sensoric i~pre~s:cons be~een vertika~ and horizontal position of the mouthpiece. Fm" example in the vertil~al position the item "mouthfull feeling° decreases with decreasin~ angie, while "impact" is increasing. . ,r ,,"

4. DIOUTHPIECES I~ITH ~IT SHAPED CHANNELS / • LochL&n~e. 8,G,~- ~ ~ FIG,4. Orientation of a slash-shaped channel in a I channel mouthpiece Photographs of the outcaming smoke sho~ that the stream of smoke ist flattended by the channel,whereby the width of the stream changes according to the slit length, but the thickness of the smoke errram remains s~all and constant. Within the stream one fihds inhamogene smoke densities which are p~obably due • . to inhomogenities in the filter (for example caused by channels produced ' '~•': "" .i.,~ accidently during the manufacturingl.The results of the senso~ic test show " ' ~ ~ ' ~ again a dependency of orientation horizontal/vertical, The differences are J : :~,':, ," , i'/ similar to the ~ channel mouthpiece (n6te section If. ~ith decreasing length of '-~ ' the slit ~he influence of the orientation vanishe~. This is similar to ~he , ~;.• Lg'i .... ~ : ' ' ~ channel mouthpiece~i~h decreasing angles. • • 5. I channel mouthpiece (30 angle) Fi9ure 5 : orientation of the channel in the I channel mouthpiece \

&X~,/.:" . /. ~i i % " :7~t~"<; • i~~ "~ • Thealready repeated impression of %he 2 channel mouthpiece were repeated in ' the four possible orientations (horizontal" left or right, vertical: up or down) Both horizontal (similar vertical) positions can not be differentiated i~ mouthfull feeling and impact. The effects were net as bil as found for the 2 channel ~outhpiece. Unpleasant side effects wre noted due to the very hilhlocal smoke concentration especially in the vertical position where the channel points downwards.An extreme burnil~-sensation was felt at the tip of the tonlue. - i,. 6. I Channel mouthpiece (axial , 'different diameters) . :~.~. ' ,.~S~ i i ' ..... .'/•:" Figure 6 Orientation of t~e c~nnel in the 1 channel mouthpiece ~ : Considering only tile diameters 6,4 and 2 mm of the channel one finds with ~/ decreasing diameter a decrease of mouthfull feelinl and an increase in ~+~; : impact. The channel with I mm diameter however shows a hi~her meut~ull feeling and lower impact. Besides that it has an extremely hilh draw resistance, The di++erent behaviour can be explained by the hi~ draw resistance which can not be ,e~lected and secondly by the totally chan~ed smoke pattern.Figure ? c.J $ / ,[

Figure 8: orientation of convergent channels o, r~ L

4m i~¸~il i~~ ~ > b$" t. r i E The turbulence described in section 6 can also be produced with mouthpieces having more channels.Hereby the channels are arranged in such a way,that the outcoming sloke streams strike together and form a turbulent mixture with the surrounding air.The additional draw resistance caused by the channels is negigible small. The results for the items "mouthfull feeling= and "impact= were in between the results obtained for ~outhpieces having divergent channels. SUHHARY The ratio of mouth~ull feeling to impact can be influenced by the direction o~ the smoke stream. By the Use o} attachable mouthpieces having channels of eegiigible draw resistance, it was possible to obtain quite stable laminar streams.Herewith one can evaluate values for sensoric impression in dependence of the direction of fl~.~, without changing other parameters of the ciga(ette. In addition to this work several types of filters shall be developed, which can be produced by'machines and are abI'e to give the appropriate direction of flow to the outcoming smoke. Three ways are possible: a, printing a Pattern on %he downstream end o~ the filter b. producing filters which are structured in package density c. producing filters which have non circular cross-sections so that a specific position can be clearly depicted to the consumer r (Dr '," , •