Document gDDav4Rezxgy65V5o0bVEL5JL

MARSHALL DEVELOPMENT LABORATORY STANDARD FORMULATING PRACTICE PP-893-A Date of Issue; 9/30/65 Supersedes; New I. Description of Line; (a) General Description; The 893-A line is an alternate for the 867-line High Gloss Thermo-Flow "Luclte*" Acrylic Lacquer metallies designed for auto motive use. The 893-A line is an Industrial Sales code for use mainly in the sale of casket finishes. (b) References; Correspondence with the National Casket. Co., Lancaster, Kentucky during 1964 and 1965. II. Application and Testing; Refer to the 867-line formulating practice for physical constants data. The application procedure used in finishing caskets is a bake-sand-bake system which is, as follows; 1. Hand spray 0.3 mil DFT 881-2038 Primer, reduced by volume 1-1/2 parts 37767 thinner to one part 881-2038. Flash l-2^minutes. 2. Immediately spray one heavy coat, then a mist coat to DFT of 1.0 mil of 893-line lacquer, reduced equal parts with 37767 thinner. 3. Flash 10 to 15 minutes. 4. Spray 2.0 mils DFT of 4550 clear, reduced 1.25 parts 37767 thinner to one part of 4550. 5. Flash 10 to 15 minutes, then bake 15 min. at l8oF, 6. Cool and wet sand with 500 or 600 W/D sandpaper and odor less mineral spirits. 7. Clean-Up. 8. Reflow bake at one of the following schedules; 30' x 250F 15* x 270F 10* x 300F -Registered Du Pont Trademark FP-893-A Page 2 9/30/65 III. Formulations (a) Pigmentation; All 893 line colors should meet the 867 line pigmenta tion practice hut exterior durability is not required. Any unusuAl problems or deviation from this practice should be referred to the Marshall Development Laboratory for approval or alternate recommenda tions. (b) Vehicle s Same as 867 line. (c) Modifying Agents; Same as 867 line. (d) Thinners; preferred. All regular "Luclte49 thinners can be used but 37767 is IV. Formulating Tables; None V. Manufacturing Problems; Refer to 867 line formulating practice VI. Reason for Revision1 New MARSHALL DEVELOPMENT LABORATORY AFK sms IO/6/65 A. F. KRAUSE DUP030029311