Document bB7Q1j6pjb7r0z1qdo6Zw96yo

february 1950 A final report os the 4erelopet program of Tfceraaoouatlc. To tandaatte the rwtrA phase of JHaraacottStle *nd place the product under the Acoustical Coa^odity Depertawt, Ihsrmercuat Ic la at preit being periodically maufactured at th Alex- *driaplael la basically the teas ncmer a* lo Mineral Vool Insulating Coa<0t. The material contains mineral ool. aabeeto*, a binder, and a fuagiolde. The forftxla developed to replace Ll^et Uioae nanufecture Ham been stopped. Tho material is applied with a spraying machine called the ThermaMover. This machine la ei7' elnilnr vo the Limpet vnit,. ad la eold directly to the applicator* by the manufacturer. Tbermaeouetic ie considerably aore difficult to apply than Limpet, and consequently aore skill la required to prevent the frequent drops. The material aagr be applied to aost surfaces up to a tniefcnee of tvo incne*. Tharaacooetlc received a fir* rating of 3 hour* and 55 oinute* at the Mellon institute, but the report Issued contained result* of two other competitive materia1# tested. A second teat 1* nev in progrean in order to receive as Independent report. Sale* **>u!d 1 Ik* to *ee thi* naterta' peso firs tests vher. applied direct'? to steej flooring. Though Tharaacouatic Is difficult to apply and results elth a rough finish It aeeas satisfactory In the fjeld a an -fi**-**n ----Lssd" 00070 Xaport So. 665 PC4 So. 2 a* a* imlatlic or fire retordmt aaterial, it'hae lta fmlt. the binder la the arterial rt klrt to^araturea will ban ant md 1 wri * mass that la rsry frlsbl atfe .llttl# action. this way result la a drop darln* t6a fir*. Aj Iptflntlotf at)irUI there la no protection acait npor eoadeaeaticn. Condo- ijttint -it eoct* lota In bending aetloa vlth a probable drop reaultlng. to Toaomt^mAaAimo hereto ere aoattofec* *a tha dentil ot Saloa far o better product #ta larttapai, or that true quality control la needed. Bte offeetlTooaa of {Ullty ooatrol for thla prodtact la doubtful becauee tho ability of thla product to perforn la dapoedeat eolely upon tha py>3 lcstor'1 method* of application. Both- tha nardilio used, od tha aathod of Ihersacouttlo application ara eery slntlnr to iha Dolb^ Patents Milch expire In to year*. An yat than hen boon no clear definition of non-lnfrlnfowat, aid consequently It viu hare to be cleared up. Sr. I. I. feltlock la at preetit studying tha patentability of tha forau'a or sons of tha ^plieatloo phasee. 3wad abaorptloa raaulra froa tha Bleerbanfc Acoustical Laboratories ara as folio**- W.R. Coefficient 1/2* 3/b* 3/U* 3/h* thickon natal lath thickon aetal lath thickon natal lath(painted) thickonaolld backing 0.80 0.75 0.75 0.65 tbooe roaulta ora net aa food oa those for competitive apreyed nceuatlcal products, tot ora claatlflad by Sale* ma llrabla. A thornal eoadactlxlty coefficient received froaths Plttaburgh Taetiag Laboratories ana 0.27. ihia value i eonaidarad exceptionally good. ^ha raeooaandatloaa haraln na atatad in tha conclusions are continuant on tha de-wid for lav spraying product a, cloaar quality control and nore perforaaaea data. 1. Purchoaa of a Ther**ocrostle nachina by the Alexandria plant. Tha nanhlae vl!l ba used tha plant for quality control and by Research for further dreelopssat of spraying products. 2. * Oartlopaaot of beat tasting methods for coverage, density, bonding, taxtura sad surface, ate. 00077 t^ort K. 665 , ** ** 3 Stu^p ef Shervacousttfe Halt* warn an art-- application rate*, atflwa thlofcsoee, deseity and thickness n. eoudd absorption d theme! ooo. dectivity, ate. 4. ftitem reeeereh: Pevelopaant of tm tooresole binder te ifcolly or partially rapines 1fc prsAI rfsl4 'kinder. 1. fiadinc eobetitate fibers comparable to Anoaito nebeeto*. C. Developeent of a apfaylnc wcol containing aineral wool ea the only fiber. 0. future teeting for: 1. Ignored sound absorption coofflelaete. 2. Dfctd*rwrtt*r`a Laboratory firs ratine. Clarification of the possibility of lnfringameot on tha Dolbey Patents. fta Thameremetic problen do. 1950-129 (previously Bo. 600L), it covered under tha following raaaarch report* Koe. 356. 377. 391, *37, .<*68. *70, *95, 595 , 596, and 656. The deralopneat coaaieaced '-ith a 1 itaratura study, and a visit to tha Liepet jppl icator In law Tort: City to study tha priaeiplaa of Li^at application, and tha naehinary no ad. Following thta vae a anarch for a suitable type of binder and as bestos fiber. Tha devalopaent of tha fomul a involved the evaluation of varioue sixes using dif ferent type# and percentages of aabaatoa and bindara, tha use of alaaral wool aa the tola fiber, nd one test using aineral wool insulating Cerent. The final foraala selected la an follow*: Mineral bool (type X) Aabaatoa (Aeoeite) Binder (Perfection Paata Powder) fungicide (ihirlan D) 80 Iba. 3 2 lbs. 8 lba. 2'!0 lba. Klaeral wool dots not her# a tendency to readily becoae wet, and consequently it . ..'..................................................... ....................................... 00078^ Report Bo. 665 Pago Be* b will Mt twlly folt iofttkr and fUolt to wrfiot applied. Mpnlill; lm %fc4a applied to aetal lath. characteristic uf felt lag swd tUdrlaf idt-- wot it af mt--st lapertanoa slaoe the "bindsT wood do-- sot display adhesive queli- - Uw MU dxylag haa started, Iho ability for tho --teorlal to support itself and W --|*H it tUrtfv*. dqsedeat upea the v*(Ub| sod feltlag motion, Jwoslte apftafchsfc ill readily bseswe wot aod will do a fair lot of stioSriag to woot surfaces. Fagtl dr-ri. it dooo sot hors tho tsodsoay to* roudi la aetelar U( Wiso Mown ; 4mw# a awilttaa ad das* Mineral wool. 9io eowblamtion of aiaoral wool sod p*. 1 TBd(ftH"Wa4 mU. fait togothor, and aatlsfaeterlly adhars whom applied *ot to aott aaif--00. 1% 1* therefore uood la the fotenia. tho hiadsr od 1 a starch *dilofe a47 booeoo patrld or support sw?4 pdli whs* --lntdaod at high huoidltios and temperatures for extended periods of ttwe. Tor thin re--aa th starch l inhibited with a fungicide. At present fungicide uesd Is Shirlew B and v-- selected aftor testing variety of fungieidos at rarlod encwtratloo*. It it non toxic, sob irritating and it added to ftiomacountic at tha tin# of smut,feetars. Previous to tklrlaa 0. Santibrlte briquettes' wars used. the-- briquette* had to bs dismal--d la tho spraying water as they vre too Irritating to be added to the product la tho dry fora, ^od whan dissolved la water, tho fungicide vu extreuely irri tating. for fungicidal study, too roooareh report* and 596. Thorwaoouttlc it uaccofaetured at tho Alexandria plant using tho alaeral wool consnt facilities. tbs --facturing proesdur# it basically the mm m used la tho wnw factors of alaera! wool" cowsat. fwo bag* of typo X wool end weighed amounts <-f *# bsotos, binder sad out fungicide are Mixed for 30 seconds end than bagged to weigh 30 lbs. ast. Specifications covering this product are as follows: Protect Protect Kfg. Proceditse &cw Materials Asbestos Binder Tuagicida 60-60 61-60 68-60-1 68-60-2 66-60-3 tbs Malloy Machine Cexpy, Chicago, Illinois is aeoufacturlag the kisraabl over (Ther--cooetic --chine? sad accessories, this equipment Is o1d directly to the appMcrt^rs. the sarhiae le a duplication of tho Llopet machine with sodlfloatlons. It produces * higher air velocities. Is capable of greater food, and Is twenty per ewit lighter in weight than the Liapet unit. Hoarranging tbs brush off roller of the eotweyn* has stopped balliag up the wool, a condition previously axperiwieod. the baJHng act'or. caused loss of wool at the end of the conveyor bait, and contributed to a rough textured finish of ths protect. The new Machine fluffs tho aatarla? very wall, *0sultlag in no lost at the bo t toe, and a finer textured surface. 00079 pert Vo. 665 rac* 5 \ &sr*soostle( Itrsntt it# fonml* ooaeleta nostly of slnaral wool, le oosaldarab?/ are difficult is fT^r the* Liapai which it all asbestos. frequAit drop* occur bo. ai>< of |Mr faitlag, sad asstlderably aoro okill la application la required. . At a 4jk1% of 12 lbs., Jhornaeouatlo baa a alataa oorocogo of 2*00 eq. ft. / ton aft 3/b* tkUk. Alt figure all*** for a'l^ loaa through drops, fly, Material loft X^co*i*fc*a4jr V* lbs. af watar la head par lb. of fhsrvnoonstle. A law water ratio 'result* la' t.Wl flaiafc, increasing tha ascent of water result* In 4 harder ftnlnh. The darroa of drying alao effoata tha hardasoe, good ventilation (quick drying) in crease* hartaesa. ffcanaoaouetlo soy bo spiled to aolld bankings each aa wallboard, piaster, gypeun loth, concrete* sssoary, aatal ar to not*] rib lath. Biasond mooa lath lo not -reco*mmdod tinea It has lasufflolMit Integral otrength and if used aoet bo on contern of ^pfoxlaately 8*. All surface# othsr tbos sotallath ar* first prised with asphalt osnlsioa. The priming Aits surface water absorption, sad alao aids la initial bonding. fha mmrlmm vat application 00 ablId- backing la 1-1/2" thick, md on hotel lath i* lo 1-1/4" thick, fbio natorlal soy bo applied up to 2" t(hick if it la pat on in tv? ^plications, ths flrot balng allowed to oo^letely dry bofbr* applying the oeccrv'.. Indications aro that fhermacoostie say b# applied to ooillag* in ozpeoo of 2*. b-u ilaeo so actual Job or exporlasqtat Ion has beoci Carried out, a flgtfre aboro 2* cm not bo rooosrocd jd. Otreo ooto of penal* each totaling 72* oq. ft. ware oent to tha RiYerbenk Jfcouetica) Laboratarloo for acoustical ratings. ...Each *t consisted of 6 panels.) e*3h pane] being V a*1. Thqr wart prepared at the Clarence Coot or plant, end sprayed by the Fleeter tests Co. la Chicago. Ths thlelmese, badrlng and rooulta of the teat, are ae fo'- '0*^: True and Thlcknooo 128 25k 1/2" thick 00 seta! lath 3/4 thick 00 seta] lath 3/4" thick oo Mtal lath (aboro eaeplo with 2 spray coat# of btoo paint) 3/tt* thiefc/pib so) Id backing .61 .57 .59 ,08. .64 .64 .58 .25 Coafflclonto 312 1024 2048 .78 .85 .71 .85 .70 .66 .86 .88 .86 .67 .57 .84 <S26 .87 -36 . .90 .79 y.a. .80 75 .75 .65 Thorsacaaatlc oa aolld baling Mien e aluated la the laboratory resulted In P.B. of .75 to .80. A portion'of one of the oolid backed pane1* returned fros tha tlverbank Laboratories gars a I.R.. coefficient of .90. The reason for the dlocrapaacy lo not fcnevn. oooso ' ftipart Co. 665 PaC* * ^ * * fm hleofce of Th*rwuuntlc 2* * 12* x 12* f* 20.8 Xbm. wrn deaeity received a I ralae *t 0.2? a* a w of 75^ ** teat w perform* the Pitta- te^i 7mUi< UNeftlorlM. -pMMtl iNAPttT&tf rMalta ere owi Uefd ^ytiwriTy pit, tat reeulta * t*diftd tT WIm m aolrltvebl*. tW 1,1. erfriei^t* at ftiMtutlfl 3/** nut* op metal lath tfi nek Mag need far adeenialnc hwi they ora e<- tMM^r law Mem aaopatltlr* ipnri tat rmlti. Mr Mr flr*t fir* ratine trat at Um Mellon IneWtute, thir--nonetin ma mpreared 1" ihlate to i aampeaded oelllne ooneietlne of diamond anb metal lath oo 22* center*. Due to application trouble cmaaed hr. weaving lath* tho material *ae only applied at a 9 It. density, St# aeteriai received a 3 boor and 55 aiaute f ir* ratine but wu oouldarad not eondactlve to confidMC* beemee the Itermaronatle readily eeparated from tha lath bea lightly probed sftar the fire. fhV cr|t t^intarN vara 110 to 160*7. higher than tha t my efatare* of compe titive notarial a prevlostely tatted la tha anna furnace, fia*a high value* vara -attributed to tha low deeeity tinea tha ooapatltlv* taata vara run at danaltlaa In tha vicinity of 18 lba./on. ft, She aparation of tharmaeeuatlc byrfight probing oocorrad baosiaa tha orcaelo bladar had burned out, and only the faltiae action of tha fiber* hold the material in pino*. X lecoad fira teat at tha isatltute la.now in progrtaa. thermacouatie hac baen piled to a nor* rigid euapandad call lag ooseieting of 3.4 lb*, natal rib lath ad applied at an eetiaatad deeelty of 15 Iba./ou. ft. Tha increased density tUI undoubiadly giv* a greater tine ratine, but no relief i aean to prevent tha material froa aeparatiae *han lightly probed aiaea an organic binder *a uaad. The prina reason for thie second tact la to receive as independent report. 'The report of the flret teat contained tha remalt* of Themmcotuttie and two other competitive epreytac material a previously tested, X fire ratine of a houra or eraatar le aleo atrlrad for la thU teat. The Salaa Department would like to aae a eataria3 developed that could be ^plied directly to the oaface baine proteetad without tha uee of a falea ceiling. The S. fl. loherteoa Co. of Plttaburgh, who nmjufacture prefabricated steel flooring, are very ell line to aid thie- orfaniaatlon vith the darelopraerU of tht type notarial. fha fallowing 1* a liet of patente damline with eprayine of fiberous notarial So. 1 So. 2 So. J So. k So. 5 1,718,507 1.837,422 1,881,545 1,888,841 1.978.125 Vo. 6. So. 7 Io. 8 So. 9 So. 10 1,990.584 l,r,0,585 2,179.678 2.503.390 2,433,463 ,> 00081 Xaport *o. 665 ft** >. 7 Manta la^no* 1 tfcmch 5 1m ^ir4 i*do patonta mxaborod 8 throng* 10 bar* lypaa of agolpaHBt not aladlar to tha fharaacoaatlc proomo. Soi. 6 and ? tftd.Bolbar Mtoita aspiring it too yoaaro.aad *oro tha pstanto vaad by Koanbatr r;'- ' .* ?!%'" ' *" "iC .v . ... **% TtipriTiT ovwr la baoaatiailiy * ooof *4 Mhtao daa&rlbod la tho Dolbor Mft tho nodhoio* afpllaattoa 1 toct ointtar to tha Bolboy patant ^,nBi W*m (rf^UfrfbfQ* < M4 bo clartflat by tho company's **to Ifcoro u oft rooord 1st this offl* * avomba aboviac oottloMnt on* of onrt botvont Iho Kooobaqr Mattlaoo Oo. od Ooorgo V. Lehman ragardiag tho latrincmmi of tho Dolbor pataota. mx&nat or MCQrenrsjgtgs At protest thara lo no goalitr control tooting of Thorvaooaatio alailar to 3ob ^pl taailoea, aaad tharo tft ao aocfc boats apoelftod. fcb# practicality of that* tost* is AoobtfoX alios tho application of this notarial 1* Mtlroly iipoiaflt upon tho of tho applicator (oorerago aay bo rarlod frcn 1600 to 3500 oq. ft./ton, and tmaity say bo Tsriod tnm 8 bo 18 Iba. ro aoaa^laa). If hovwrar, tho danand for thlv product requires quality control alailer to 'Job applications, the following 1. farcfeaa* of o Siamablowar by tho Aloaftdxlo plant, fho plant will periodically check 3bear&aootutie for oowarago, density, bonding, testers and mirtac** 2. 9v Research Dopartaant **111 hero to derolop aultabla rothftio for tho abeww tasto. Do* to tho loch of faeilltloo daring prorlcua reatareh, tho following ver on^y partially or oot at all si'alnated, and only a Hatted oaotxnt of performance data la available. This wort: aa tborr is only rocon-wied If tha sale Of fhermacouettc warrant# tho ttody. 1. Optlaa* ooana of spraying (rot#*, application*, angles, etc.). 7. Boat methods to prodaeo Attired toprturo. 3* Martorm poralaolbla thlokaoaa. b, Bocalty and/or thlo)maaa . aooad aboorptloo and/or tharsal eeadaetlTlty. a. ' a 00082 ?W*