Careful check of yarn formation on shipping bobbins holding Lycra spandex fiber is made by supervisor at DuPont's Waynesboro plant. This careful scrutiny of the yarn takes place even before it is okayed to be sent to inspectors who prepare it for shipment to DuPont customers. Before a new plant was built at Waynesboro, Virginia the company has spent more than $10 million in research, development and market tests.
An electric eye enables this ultraviolet photometer, at left, developed by scientist of DuPont's Rayon Technical Division and Electrochemicals Department, to see shadows of invisible vapors and gases in plant atmosphere. Here intake hose of analyzer is held at operator's nose level to measure concentration of carbon disulfide during important production process. The analysis checks on efficiency of large suction hose laid inside the vessel to draw off the fumes.
Cotton plays a major role in the manufacture of viscose process rayon at plants of E.I. du Pont Nemours & Company. Cotton linters provide a big source of cellulose and thousands of yards of cotton sheeting, batting and canton flannel go into filtering material every day. The filter setting machine above is loaded with alternate layers of batting, canton flannel and sheeting that are rolled out on long tables and then cut to proper size for use on filter presses.
All rayon undergoes a careful inspection as it is wound by machine at the Rayon plants of the DuPont Company. The scene shown here is typical of the operations at the plants near Richmond, Virginia and Old Hickory, Tennessee.
Close scrutiny to guard against a score or more of possible defects is given to every bobbin of yarn before shipping at the DuPont Company's May Plant, near Camden, South Carolina where Orlon is manufactured.
Orlon acrylic fiber is spun as continuous filament onto bobbins shown here. Bobbins are then placed on racks prior to being washed. After washing, the yarn will continue on it way to the third production stage where it will be wound on shipping bobbins, called pirns. Orlon is produced at E.I. du Pont Nemours & Company at Camden, South Carolina in a plant completed in 1952 at a cost of approximately $50,000,000.
These are wound cakes of DuPont's Dacron polyester fiber just off the spinning machines. Workman is shown inspecting them at the pilot plant at Seaford, Delaware. Dacron is now produced at Kinston, North Carolina and Old Hickory, Tennessee.
DuPont's Kinston, North Carolina plant is one of two plants where Dacron polyester fiber is made. The other is located at Old Hickory Tennessee. Bothe Kinston and Old Hickory plants maintain a textile laboratory. The view here shows part of the Kinston laboratory. The purpose of the laboratory is to enable the plant to keep a check on how Dacron will perform on textile equipment in customers' mills. The machine you see here is a standard carding machine into which staple fiber is put to permit it to be changed into sliver-a loose un-twisted rope. This is the first step in making yarn from Dacron staple. The carding machine orients the fiber in uniform gossamer-like threads to form the sliver. From here the yarn will be further processed until it ends up as a piece of finished cloth or knotted fabric. At points all along the way of the process, the yarn can be checked for dying, spinning and various other characteristics important to textile mills.
Dacron polyester fiber rolls off the shipping line at DuPont's Kinston, North Carolina and Old Hickory, Tennessee plants. Here a special telescope type container lid is slipped over the yarn to protect it in transport to the customers' mills. Dacron, which was first produced commercially in 1953, has found wide acceptance in textile and industrial products fields.
After remaining in a bath of caustic soda for almost half an hour, sheets of cellulose are removed from the steeping bath, preparatory to being shredded into flakes at the rayon plant E.I du Pont Nemours & Company