Automatic weigh tanks arranged in horizontal and vertical tandem are representative of the modern bulk handling equipment installed throughout the May plant of E.I. du Pont Nemours & Company at Camden, South Carolina for manufacturing Orlon acrylic fiber.
Bales of raw cotton linters composed of short, raw cotton fibers left on the boll after the larger fibers have been removed. These constitute the principal raw materials used in the manufacture of finishes by DuPont.
Mylar polyester film emerges at the end of the manufacturing operation in a continuous sheet and is wound up in large mill rolls, which are later slit on machines like this to customer's specifications in widths from 1/2 inch to 54 inches. The film is made at the DuPont Company's plant at Circleville, Ohio.
Dynamite ingredients are carefully weighed and mixed for the powder lines in the dope house at the Repauno, New Jersey plant of the DuPont Company. Operator is dumping ammonium nitrate into a bin mounted on scales.
Corfam poromeric material, a unique DuPont development, made its debut in 1963 as a new shoe upper material. One of the basic ingredients of the new material is polyester fiber. Here in a new plant at Old Hickory, Tennessee, the man made material begins its travels through the manufacturing process, which is one of the most complex in the chemical industry.
Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been making sulfuric acid for many years. It has large and small sulfuric acid plants in the East, South, and Middle West. This photograph shows operator at a sulfuric acid plant of the Grasselli Chemicals Department testing a valve on a converter for possible condensation. Temperature of converters is closely controlled to assure maximum efficiency.
Viton' fluoroelastomer, DuPont's new fluorine-based elastomer is milled into sheets, the final step in its manufacture at the Deepwater Point, New Jersey plant. At this stage, it is a translucent, light colored gum which rubber companies compound with other ingredients to fabricate end products. 'Viton' has a super resistance to oils, fuels and solvents at high temperatures.
An important outgrowth of an industrial development is new employment. Nylon has created, in the DuPont Company alone, more than 7,000 new jobs, many of which are in the sizing operation-a major step in the production of nylon yarn. This photo, at the Seaford, Delaware plant, shows protective coating of size being applied as yarn passes over rollers saturated with the mixture. Rollers revolve in the trough through which size is pumped. Sizing yarn is an old textile process, but a special solution has to be developed for nylon. It gives protection to tiny filaments during knitting or weaving. After sizing, yarn is stored in a controlled atmosphere for 36 hours to permit the solution to set. Knitters and weavers boil off the solution in the final manufacturing step.
Nordel is a new type of synthetic rubber resistant to sunlight, weathering and ozone determination. DuPont is producing it in a recently completed plant at Beaumont, Texas. The new rubber, a product of the company's pioneering research program, is expected to have broad use in outdoor products.
This scene at the Newburgh, New York plant shows a step in the manufacture of coated fabrics. This illustration shows what is known as jig dyeing. The base goods are dyed to a shade closely approximating the face color of the finished goods. Coated fabrics are used in bookbinding, upholstery, in many article of style in the women's field, in luggage and in many other places where a tough, flexible fabric is required.
This is another view of the manufacture of continuous sheeting of Butacite polyvinyl acetal resin, which is used as interlayer in modern laminated safety glass. As it passes onto a wind up roll, as shown in this picture, its unusual flexibility is clearly evident. The intricate and complex system of manufacture by which a powdery resin is transformed into continuous sheeting which can be rolled up and shipped like a bolt of cloth, is one of the achievements of modern chemical engineering. Interlayer sheeting manufactured from Butacite polyvinyl butyral resin is of good clarity and color and particularly resistant to the deteriorating influences of prolonged exposure to hear, light and moisture so that the safety glass pane retain indefinitely its initially good appearance. Tests made by accepted methods have demonstrated the ability of this safety glass to yield under a destructive impact, so as to lessen the severity of the blow to a passenger thrown against it in an accident. The plastic interlayer in the broken pane holds together and stretches under the blow and at the same time holds the broken pieces of glass together. The Butacite resin is compounded with other ingredients to form a dough, which is extruded through a slit to form continuous sheeting, which is then freed of solvent and wound up for shipment. This photograph, made at the Arlington, New Jersey plant of the DuPont Company shows the continuous sheeting passing through an air cooling process. 'Butacite' is also made at DuPont's Washington Works, near Parkersburg, West Virginia.
Dynamite products starts at the acid area in the Repauno, New Jersey plant of the DuPont Company, where operator is shown hoeing finely ground sodium nitrate, an essential raw material, into the endless chain loader.
Nylon filaments to be used as sutures or fishing leader is shown in this photograph being wound upon spools preparatory to shipment. Photograph take at the Arlington, New Jersey plant of the Plastics Department of E.I. du Pont Nemours & Company.
A mill roll of cellophane being taken away from a casting machine at the DuPont Company's Tecumseh, Kansas cellophane plant. A single mill roll may contain as much as eight miles of cellophane. The Tecumseh plant, which made its first commercial shipments in December 1958, is able to produce 50,000,000 pounds of cellophane a year, a quantity equivalent to a strip of cellophane five feet wide that would encircle the earth ten times at the equator.