Document oDDZ0ydbRz62qazJDyeLG3GRX

PLAINTIFF'S EXHIBIT GF-1403 MONTHLY HIGHLIGHT REPORT - JANUARY 1981 BUILDING MATERIALS R&D A. ASPHALT PRODUCTS Proprietary Shingles Information The pilot asphalt roofing machine has been installed and two shake-down runs completed. Improvements in sheet tension control, granule flow and backsurfacing flow are in progress. Tentative specifications for a 9" wide, glass-based-starter aJgrip for Sentinel shingles have been developed in preparation foT a tf$#l run. Built-Up Roofing ' Tensile strength profiles of Gafglas Ply 4 roof sections have been determined over a wide temperature range (-25 F to 75 F) and compared with organic felt sections. Three plies of Gafglas Ply 4 exceeds the NBS 0F tensile criterion of 200 lbs/in and is equivalent to 4 plies of organic felt. Mineral Shield Mastic made by Monsey, using a longer asbestos fiber to improve durability, was successfully sprayed in the field. A switch to the longer fiber has been recommended. DOE Contracts A summary of the pollution control and safety considerations involved in the felt mill saturation project was compiled and sent to DOE at their request. Experiments continued to map the sulfur particle size and shape in sulfur/ asphalt emulsions. Aging at elevated temperatures promotes the formation of large sulfur particles and eventual crystallization. Asphalt Supply The use of Hunt asphalt has started at Mt. Vernon, replacing Chevron asphalt, which is no longer available at that location. Mobil Oil asphalt was approved as an alternate source for Dallas and Joliet. Two trial runs of Little America (LARCO) asphalt saturant (potential savings $200,000/yr) were attempted at Denver. The initial shipment was satisfactory but the second shipment was returned because it did not meet specifications. Glass Mat A 25-hour run of shingle mat using PPG glass fiber was made. Wet tensile strength was double that of OCF 670 glass, and less foaming in the process water and binder system was noted. Dry tensile and tear strengths were reduced but were within specification. Two new samples of sized J-M fiber show excellent dry and wet., tensile strengths in the laboratory. Eighteen tons have been ordered. MICH08773 MONTHLY HIGHLIGHT REPORT - JANUARY 1981 BUILDING MATERIALS R&D 2 Lab work demonstrates a substantial increase in tensile strength of BUR mat using G rather than K fiber. Substantial increases are also found with the use of a Reichhold binder containing EVA latex. A new, finer mesh forming fabric is now in use at Chester with marked improve ments in white water glass content and cleanliness of wire turning rolls. It has also been possible to run with a better tensile ratio on this fabric. PLASTIC PRODUCTS Proprietary Gaftemp Insulation nformation New R value tables for St. Louis product have been'^>repfe'^^Kfed on aged K factor data developed at St. Louis. Isotherm wlfcli a 'lover coAstop facer of organic felt in place of asbestos felt passed FM Class I fire tests. One-Ply The current one-ply program calls for purchase and resale of 8 items, preferably all from Uniroyal, starting in August. Purchase specifications have been developed for EPDM membrane, uncured neoprene flashing and lap cement. Product evaluation and purchase specifications are under development for the 5 remaining items, which includes flashing cement and bonding adhesive for adhered membrane. Gaflex Expansion Joint Cover Five hundred rolls of Gaflex Expansion Joint Cover have been produced and shipped. R&D continues to monitor production and is following field performance. Cj' GLASS FIBER C-Glass Composition of Raw Material Studies Most of the raw materials for the present GAF C-glass formulation have been evaluated and a report listing acceptable sources will be issued. Mineral Fiber Process Recent results with blown fiber additions in hand mat sheets have demonstrated the need to develop sizings which can enhance the strength of the glass fiber. Sizings containing coupling agents will be applied in the nozzle and in the dispersion tank. A new, large capacity blowing nozzle has been ordered which should replace the laboratory scale nozzle found to be most effective. ' i. MICH08774 Johns Manville Pacific Resins DuPont Union Carbide Crane Co. Thilmany Oxford Guardian Packaging NEW MATERIALS 100.2P, 100.41P, 100.42P ) 100.47P, 100.48P, 100.51P) ~ Glass Flbers 3811-B (advanced) _ 3811-C (advanced) ' U/F ReSlnS Neoprene - Latex aiioo - silane PrOOf'i6t3jf*y 4M Information Craneglass 50-30 (several thicknesses) - Glass Mats 26-lb coated line ) 38-lb coated liner) - Kraft Kraft/foil ) Poly laminated to GAF mat Poly/kraft/poly ) Kraft/Black poly) " Lamlnates MICH08775