TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: No Known Copyright TI - 50-pound autoclave used for production of polymers ID - vm40xr648 DA - 1946/09// YR - 1946 AV - Joseph X. Labovsky Collection of Nylon Photographs and Ephemera, Box 2 VL - Joseph X. Labovsky Collection of Nylon Photographs and Ephemera, Box 2 AN - Joseph X. Labovsky Collection of Nylon Photographs and Ephemera, Box 2 UR - https://digital.sciencehistory.org/works/vm40xr648 AB - General view of a 50-pound autoclave first used for the production of "Fiber V," later branded as Dacron polyester fiber, at a DuPont semiworks facility. During production, a partially-evaporated salt solution was fed into the autoclave and heated under pressure in order to precipitate polymerization. Once polymerization occurred, additional water was bled off and the pressure was slowly reduced to atmospheric levels before the polymer was extruded. KW - Textile fibers, Synthetic KW - Polymers KW - Polyester fibers KW - Autoclaves KW - Polyester fibers--Testing KW - E.I. du Pont de Nemours & Company KW - Machinery LA - ER -