Document omoGV6wrm81Re2ym4D79KEyeo

^S, JUH LEAD INDUSTRIES ASSOCIATION o NEW YORK 17, H. Y. COPIES SENT ALSO TO: ENGDEERUW AND PURCHASING PERSONNEL August 3# 1959 SUBJECT: NEW LEAD-BEARJW SOUND XAICTER To the Member* of the Leal Industrie* Association: Every member of LIA can assist la the successful Introduction of a nev lead product vhlch ve believe has great market potential. * product Is "Coustifab". It Is a flexible vinyl plastic sheet heavily Impregnated with metallic lead powder and backed with either glass fiber cloth or cotton duck. It nay also be obtained with a pressure* sensitive adhesive backing, making it easy to apply to other surface#. Because of the high lead content, it le effective In miniciting sound and vibration. For example. It la being used as a cabin liner In : Douglass DC-7 and DC-8 aircraft to reduce nolae In the cabins. Inter national Business Machines has Just started to use It as a liner for their latest model electric typewriter housings to reduce noise caused by the vibration of the sheet (teal. There are several ways In which you can help: ~~ 1. When purchasing nev typewriters, ask the salesmen If their o typewriters are lined with this material. Vc at LIA did this and, as a result, at least one other large typewriter manufacturer's director of research called us for particular* snd Is now testing It. 2. Buy typewriter* using "Coustifab". 3< Look around your own operations for possible applications. He suggest such things as noisy machinery beamings in both plant and office, folding partitions, and thin walls. "Coustifab" Is manufactured In several different weights and can be obtained In rolls up to 36 or 38 Inches wide. A few nairov strip* may often stop the vibration of a fairly large area of sheet metal. It 1* made by Cordn Chemical Corporation, 34 Osith Street, Norvalk, Connecticut. Ve are *-_.-e the manufacturer would be glad to supply Information end samples. Address Inquiries to Mr. Frederick Hall, Sales Manager, and please mention LIA. Dr. Schrado Radtke, Director of Research of LIA, joins me In feeling that this product has great merit end possibilities. Ve Intend to publicize It In the fall. B. F. Goodrich Chemical Company, producer of the "Gecn" plastic employed, will do likewise In advertisements la AimHOTIVE INDUSTRIES, ARCHITECTURAL RECORD, snd two plastic* magazines. Very truly ycura, M. way o UV9V