Document ZBGYZJKL79DEkOeJpNbydmey8

FILE NAME Corning OC DATE 1966 Dec 20 DOC OC360 DOCUMENT DESCRIPTION Memo RE Cotton Fiber as a Rainforest in Kaylo with Stamp of Confidentiality 'Ve - ee This document or any parts of it should not be copied nor divulged to others without permission of Corning Fiberglas Corporation Mr. A. High O. W. Pfeifer COTTON FIBER Doe oe . December 20 1966 1 7 Mr. R. E. Langlois . . , Mr. R. J. KaBrey [7 Mr. F. Shannon nn 2 as w wet You are aware of the urgency motive in the substitution of cotton for asbestos fibers in Kaylo from a health viewpoint There is also the advantagoef impact strength improvement accompanying its use If it is possiblteo secure the cotton fibers for less than ten cents per pound an economic advantage can be had in raw material cost as well However all cotton fibers may not survive alkali attack from the line nor the 600 F tempeofrta he t auu tocr lae ve To date the limited trial tests ~ we have made with bristed cotton threads have had a survival record when gubme inrthg e e Layd lo slurry The exposed portion has burned may We must also determine from the various grades of cotton fiber used in experimental specimens the temperature at which sintering begins and when completely burned away when such cotton fiber containing insulation is placed on a high temperature processing or steam line and whether or not this resulits accompba y annyioedd or fumeosr moke We need all grades from linters through a heavy twisted thread to test for survival rates times at various pipe temperatures as well as from Processing results through the SID eyhinder We hope to find some grade of cotton fibers seonomically comparable with asbestos which can be substituted in whole or in part for amosite or shrysotile asbestos The amonite fiber presenustedliys for strength purposes at the cost per pound of the grade in service The strofe thn e eng d pt rodh uct breakage in application or transit can be improved at a higher cost by a longer amosite fiber Correspondtihenigmplacyt stre is n redg ucedtwhh en a shorter length amonite at a lower cost is placed in the Laylo batch The chrysotile fiber is of shorter length than the amosite and is a softer asbestos with less strength imparting characteristics Its main purpose is for suspension of the raw materials when in a slurry form to eliminate water separation during standing and through the first reaction stages of proharinduanr d a int dui rao tin on We can further discuss verbally any other information you may desire or need We will appreciate your help in procurement of cotton fibers 01 022 1421 - an economie penalty attached to the material we need over asbestosfibers - , you may have access to more information along these lines than we had and therefore do not think should dismiss the potential use of glass - fibers in this experimental project even if past experience has not been favorable ~ QHP i ] ] ] 4 | fo 01 022 1422