Document bO004b4994gQLG39aqY4D8DDk
BESTVALL OTPSDM COMPART
Lessrs. H. J. Zelns - Acoo
February 19* 1958
Paoli Laboratory
K. H. Powers 4 Akron
J^yron Read - Fort Dodge
BESTWALL LITE ACOUSTICAL
A. H. TenElshof - Grand Rapl ri> ^ |f*scoy eon^MT
PLASTER
E. L. Flinn - Sigurd
1--------------- -------------------------------------------
C. G. Sbuttleworth - cv
CM>
cc: Messrs. 0. F. Grieve - Paoli
J. I. Trolley - Ardmore
C. E. Abbey -
"
Development work an the new spray on acoustical plaster has been collated and satisfactory sound absorption and light reflection tests concluded. Numerous jobs have teen followed and application has been satisfactory.
Mr* Abbey will write Mr. Grieve requesting which plants are to manufacture and Quantities of raw materials to be stocked. He is particularly interested In getting this material available at Port Dodge.
Bags have been designed and approved.
t one ton Broughton type mixer will handle 500 lbs. Smaller mixers will require proportionately smaller batches.
Attached is formula* raw material specifications* and mixing directions.
Enclosures
* * -c
SGP 0018782
February 19* 1958 Paoll Laboratory
FORMILA
FORMULA
. Foottit
Batch - <r?'
Bentonite Clay
Asbestos Parlit* Tatra S dium FJrro Phosphate Ultrawe D.S.
15.0 28.6 56.0
O.lS 0.25
75.0 lbs. U3.0
280.0 (35 eiuft.) 0.75 (22 as.}--" 1.25 * (20 os.)
Add ast -stos first and mix 3 adnotes to braak up tha la^s, than sdd otbar ingredients and mix far 3 additional Mantes.
L,r, !nh-o
i- 0
ur.
R. M. SPECIFICATICB
1 Bentonite Clay " yjro-Oal 200 aash high gslatsirtslag grads - Qeorge A. Rowley lc Co., Philadelphla.Pa.
2 Asbestos - 7D - {fast not bs pressure packed. - Philip Carey & Co.
2 Perlite - Oar awn notarial (8 lb. per cu.ft.)
it Tatra Sodium lyro Phosphate (smell pallets). At least 75? Minus 20 mesh.
~ Monsanto Chamloal Co.
5 Ultromt DS -
Atlantic Refining Co.
This plaster should nix up to plastering consistency using 330 W/DM. It should contain numerous small air bubblaa and mortar should be liuqp free. Be especially watchful for asbestos 1ub| as luops interfere with spray application. Directions far use are on tha bags.
CCS tew
*** vV
i"
-'r 't
SGP 0018783
v^L '
February 19, 1958 Pool! Laboratory
FORMULA
FORMULA
Parcent
Batch
Bentonite Clay Aabestoe Perlite Tetra Sodiun PyT Pbsephate Ultrawet D.S.
15*0 28*6 56.0
0.15 0.25
75.0 lba. li30 280.0 (35 cu.ft.)
0.75 11 (12 os.) 1.25 * (20 os.)
Add asbestos first and adz 3 ni mites to break up the Imps, then add other ingredients and adz for 3 additional Mantes.
R. M, SPECIFICATIONS
1 Bentonite Clay *" Kyo-Oel 200 nosh high gelatenlarlng grade - Oeorge A. Rowley & Co., Philadelphia,Pa*
2 Asbestos - 7D Hust not be pressure packed. - Philip Carey A Co.
2 Perlite - Our own material (8 lb. per cu.ft.)
Tetra Sodium Pjro Phosphate (snail pellets). At least 75% adnus 20 mesh. ^ Monsanto Chemical Co.
5 Ultrwet DS -
Atlantic Refining Co.
This plaster should adz up to plastering consistency using 330 W/DM. It should contain nunarous snail air bubbles and anrtar should be lump free. Be especially watchful for asbestos lumps as luaps interfere with spray application. Directions for use are on the bags.
***
CGSicv
SGP 0018784
Ardmore r. C. s, Abbey
February 19, 7?$8
Paoli Laboratory
HSSTVALL LITE ACOUSTICAL PLASTER
C. O* Sbuttlevorth - cv
Confirming oar phono conversation today, Riwerbank phoned m that the panel had been tested for sound absorption and resulted in an H.R.c. of 0.565. I discussed your proposal with Hr. Hoggatt and we agreed to your request for publishing a olein of 0.55 to 0.60 H.R.c*
t.
/--------------------------------- ----------------------------------------------------------------------- j.
........... ......... )_2-_5T_.QfrSL______ :
*50--
lvr< c__oS66:
-
-W^-----
rr x y1. ..
A. .0--.
&*S2T-
/ h 3 *'
MS'
/. 5
__ /r..cl2a
loO- tjci% ISZ~$r'i/ jOrkrMT
-.-I /-Sf2-Sji o
SGP 0018785