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yri~~L•'e=.y'-: 4 A j ect• vs. ~ i',A , r : .T c~8- oo~a~ a ~ B.` 'Se1'igman (3) . , R. 'A. ':Tamol .1 . ,. TED, NDENCE i , pate: 'January "4; "'1968 Status'Report =`Controlled'Profile Cigaret January 2, 1968 » SUMMARY ,The tiiajor problem'to date has been the fact~that no firm analytica ~--demenstration of sig~ificant, TPM reduction: has` been.,made using =~':, : machine`coated cigarets..;'`However, several`cigaret samples have.:; '~':shown-` a'real TPM reduction to occur and' we' have reproduced! our original prototype cigaret with transition piece.' Film aging ~,apparentl.y takes place,.and the film material becomes more degrad--: ~able°with"-time.`'Removing film plasticizer has shown some.indi-.: cations of being'a step in"the right direction. A series of 1-=sample'cigarets with more perforations and different peripheral ~ location with ;and. without plasticizer are being smoked' with age. _ ,. , .. , , the"capability of varying film thickness to ;We have not had thinner levels.:._A discrete line coater under construction~should ' r~-- be our'tool in this area. Fi1m thickness appears to-be a major:" = factor in film degradation, ' The original gravure skip coating technique proj,ected by botl,i -Milprint and Ecusta was abandoned by Ecusta*as not being a work- ;'able systern.~All-over coating is the easiest coating technique,. ~:but this system drastically decreases paper porosity, thereby. increasing TPM delivery, which results in a poor looking ash and may affect flavor with more film being pyrolyzed. A project goal ,~..is to add as small an amount of film as possible to the paper :`with the least reduction in porosity.- A compromise.discrete 1ine,-r=. coating system has been developed by Ecusta. Bobbins made to date., .,have either had an excess of residual solvent or exhibitedisig- ' nificant blocking during the unwind operation, All-over coating' the garniture tape drum with a differential transmission and detect appropriate registration marks. Their present plans call .for conversion of a cigaret machine by the end of January. (Mayer rod) is being incl'uded, in smoke investigations. The approach taken by the Manufacturing Engineering group to _solve;; the registration problem encountered in this cigaret is to control , Our patent positionlregardinig the Controlled Profile Cigaret'via .' cigaret..rod andcigarct filter has been, firmed in a series of exPeriments re uested by our patent attorney. . . -..:: , .-. _;. . . r ,. . - , ;, _ _ It is believed that problems encountered to date are solvable and' a program is attached outlining planned~investigations tp obtain - , an analytical demonstration.. - :.. • , . ._ __ .. . . . . _, . . . . _ '~ ..., r i ,:. w . •:. 5

:Page 2 Dr. . ",R B Seligman ' '-Janiiary'4',`;1968 ~ .~ . . ,., .~ . . ' - . ~i-_.•...... ..: .~.... ~~c: " .. { DISCUSSION „ Proeiuc t ~ , ,. .. -- ,. . .- _ , .. r- . ., ,.~ . ., _ }~Analytical Demonstration ~ ~ . . . . . - . . . . . . ~ . . _ . . . . , . -. 3~:. s ~ ~`;t We have reproduced the significant drop in TPM„delivery that accom- ;panied,the transition piece cigaret necessarily used during initial h e ; .~'fea'sibility demonstrations of a controlled profile cigaret. T ~~ ~yx' exac't affect of the coal on TPM delivery: in this transition zone is ~~ ~'unkno~an:' `> It is possible that" the new coa'l formation in ,this : zone ~~~<~ ~~ ~. ~ helps in film degradation It is under investigation ~~;pi ~- ~Yf ~=,Coated cigaret paper has shown an aging effect that variess from two, >:weeks or more . This aging effect has been clouded by thicknes-s var "ia ~tion as we do not have a uniform thin coating technique. ".Ecusta has. t` ~}~ ~`:onl recentl com leted their pilot plant sca 'e discrete line coater ~'" Itsyability ~o uniformly coat appears to be satisfactory:based~on.= .: ~ first sample bobbins. .4 _ '. {'. _• 3 _ . . . . . . . • . . , ' ' . . • . 1 .. . x -~~ ":-The film aging effect may be characterized by a'change in crystallin~~ ~ structure with~ age. .:We are contacting the raw material supplier 1 ^ (Union Carbide) under a standard disclosure a'greement. During the. proposed technical meeting we will be able to discuss all results .' ;:. to-date using their film in our application. ~~ ;It_appears that film degradation i •:tors: < f -dependent on the following`fac- ,. . _ . , _ _. . Film thic~ness = Our average minimm film thickness using the existing,film formulating,and coating techniques has been in ;` the 10-20 micron range. As far as we can determine highly ~ degradable films have been thinner (5-10 microns). 'We have q; ~been hampered by the lack of a'uniform coating technique.to. fill the holes. Ecusta has shown the discrete line coater to ` be a workable system. We are fabricating a lab scale coater ~. - r'~ and will change the standard film formulation trying to reduce ,: fil_m thickness to a minimum. Successful formulations will`.be < t. ~tried by Ecusta. The film thickness variable is receiving major emphasis. ~ .. , r' - Initial trials showed that plasticizei. Eliminate plasticizer ;:remova may p e p degradation. Samples have been made but do •not clearly show this to be true. Again, results may be clouded by the film~thickness factor. Our standard mix now uses no ~=a 9f plasticizer and its viscosity is acceptable• Add'filler to film = A very preliminary test showed that the aditl.on o ca cium carbonate may help degradation. This isf under inv'estigation; ~ti.`~lkYY: ... , . . . .. - ~ .. . _ . J.. ',-.~t.?'~."F'.e~.

. .?r.. . . . .. ._ d-_. .. . .. . . . . _. . . . _ .. '~) -'Page 3 ``. ~,Dr.':R.~'.B. Seligman January 4;.1968 ~ P ~ =4 LarF~ er Hole Size 'A non-cigaret paper manufactured by Ecusta - 0 012 x 0.016'! s has been -rforao s approximatel ' with e . y _ p ~ treated with citrate.and coated by Ecusta.''C'igarets will be a ..~ Y~ Y ':made and smoked,to'see if this large hole size aids degradation. First indications are that film thickness is excessive,,: We have made a lab scale perforator and have larger (100% in-'- .~ ~ ~ t _ creased area) perforating rings available.-•They will be used wkn `investigating:, hole size :,Also, 'the perforator will -be used to oPtimize hole patterns once a`firm analytical demonstratio:- 'been made S' : Pyrolysis Studies } ~ Radioactive Polyox shoul`dbe received during January. This material will indicate what percentage of our film is delivered to the rain- ~' ..i ;St.ream smoe k ~-. . . , -' . '" -:Initial IR studies:on a`cigaret using coated paper show no signifi-. ; cant d'ifference in gas phase components, No residual solvent has been detected in existing films. If any.exists it is at extremely* „ low levels. Patent Application pata'has b1een'gathered to supportour patent applications via the ::'cigaret rod and filter.'~ :A test procedure has sho~,m significant "',difference in film degradation using saturated air versus ambient . , . _ ,K < air at various temperatuures : -_Storage Life ~ ` Since a reasonably successful product has not been available,-storage" studies of finishedipackaged cigarets,have not begun. ;PROCESS'' r -"' Coating r Ecusta has demonstrated a discrete line coating system Present _ . thinking is that this process will be our commercial coating tech- -.nique once a successful product has been demonstrated. -They have added an air dryer for solvent removal 'as first samples contained :residual solvent. Latest sample bobbins had no residual solvent but :.;. 'a tendency to block when unwound. Air temperature may have been too' N .'~ .;; high and Ecusta will rerun to demonstrate a non-blocking roll..They ~ ,-have done some very preliminary planning regarding comrnercial_ unit . . .requirements of the air dryer, film feed header and registration ~~ w ~ 4,t.. .e • . . . -.. ... ._ . ... . . . . .._r.. . . .,.. .. .,, _ .:3~,.i ~< . . - . . . . . , ..,_..- :r,... .- . _ . ~ :, _ . '~:..i !~ _, ._ t:,+;i '~- .s .. ~ s 1

4. _ ; :.r ,, .1 a Page 4 -°-Dr,, R. B. Seligman January 4,',1968 Milprint is "review. .,. ..... . . , _ , - . ing the skip gzavure coatin~g possibility .,;En- ~: .graved rolls are on order,'`:The PAR Group~is making a paper:in vestigation`of the coating'industry to see if some other technique may be more`suitable than those alreaey tried!, ~ = : . . - ~.- _ We are fabricating''a lab scale discrere`'line coater which will be ;.used to investigate minimum~ film thickness.~`'A11 Philip Morris samples preparedito date;have been cqated by„razor blade or Mayer' rod._techniq,ues Registration :. . . _ Manufacturing Engineering'estimated cigaret machine'revis~ions'to. ~.be completed by the end of Januaryt rMilprint has printed'cigaret paper with registration marks for an 85mm ciga~et length. A 100mm' ` printed' paper will al'so be made._. /cb cc: 'Dr. H. Wakeham Mr. R. N'. Thomson Mr, L. F. Meyer ... ; ;F,_ ._,~ " »~,*I ~ < r t ti , 5 e t

y r ;`PRCIGRAM TO OBTAIN AN ANALYTICAL DEMONSTRATION 7 .. ,. A - -_ - . .. . ,. . . . . . :' .. . :[ .4 iy_ ~ 1: Continue smoke analysis.of test cigarets with age to see aging' effect Include latest Ecusta coated samples without plastlQizer z=4~~ 2 * .3 . %.. Attempt to accelerate aging by an oven cycle.,' s;rf - ; ,. . - ; _ ., : ,. _. ... .. _ Firm'film thickness variable and obtain thinnest-filrn possible ~~ and still fill perforatios. Complete PM discrete line"coater,` :;and modify solids content andlor viscosity to reduce film, thick ._ :.r{ess._:Try to obtain 5 micron, minimum film thickness.; Have ~' `Ecusta discrete line.coat.promising forrnulations; Meet with Polyox supplier and discuss our'use.of their m,aterial 4 Obtain.information and suggestions regarding apparent:cryst'alline .`~ structure change with`age, accelerated aging, possible degrada- tion promoters, ejLc. Smoke trgnsition piece unperforated cigarets to see effect of` Add calciumic~rbonate filler to filmiat different concentrations _:attempting to accelerate degrad'ation.° . 4. ~Make ci_garets with "larger perforations using PM perforator. See effect of larger perforations ori'film degradation., ~ r r F . .. . - . . - .. -. ~ ~ .._ . .-.. . _. ` .. ... . . .. . ~ . ...,, ~ ., . ~ - ..,._ . .._. F~- _'-~ .I~ i . s e new coall,formation on TPM delivery. Y _ .a..,a/n+s: y ° s n ~aa Fsf $:r~i x31 rs d ~.; /~ x