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Plastics

Auxiliary Process Equipment

Auxiliary Process Equipment Article

polymer that was critical to the war effort was "synthetic rubber", which was produced in a variety of forms. Synthetic rubbers are not plastics. Synthetic rubbers are elastic materials.

The first synthetic rubber polymer was obtained by Lebedev in 1910. Practical synthetic rubber grew out of studies published in 1930 written independently by American Wallace Carothers, Russian scientist Lebedev and the German scientist Hermann Staudinger. These studies led in 1931 to one of the first successful synthetic rubbers, known as "neoprene", which was developed at DuPont under the direction of E.K. Bolton. Neoprene is highly resistant to heat and chemicals such as oil and gasoline, and is used in fuel hoses and as an insulating material in machinery.

In 1935, German chemists synthesized the first of a series of synthetic rubbers known as "Buna rubbers". These were "copolymers", meaning that their polymers were made up from not one but two monomers, in alternating sequence. One such Buna rubber, known as "GR-S" (Government Rubber Styrene), is a copolymer of butadiene and styrene, became the basis for U.S. synthetic rubber production during World War II.

Worldwide natural rubber supplies were limited and by mid-1942 most of the rubber-producing regions were under Japanese control. Military trucks needed rubber for tires, and rubber was used in almost every other war machine. The U.S. government launched a major (and largely secret) effort to develop and refine synthetic rubber. A principal scientist involved with the effort was Edward Robbins.

By 1944 a total of 50 factories were manufacturing it, pouring out a volume of the material twice that of the world's natural rubber production before the beginning of the war.

After the war, natural rubber plantations no longer had a stranglehold on rubber supplies, particularly after chemists learned to synthesize isoprene. GR-S remains the primary synthetic rubber for the manufacture of tires.

Synthetic rubber would also play an important part in the space race and nuclear arms race. Solid rockets used during World War II used nitrocellulose explosives for propellants, but it was impractical and dangerous to make such rockets very big.

Auxiliary Process Equipment Items

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BRANSON ECI-1 COMMUNICATIONS INTERFACE

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BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

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Alsteele Granulator

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Extrusion Stainless Steel Cooling Tank w/pump, 2063 WH

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AEC Whitlock Dust Collector VFCA-351, #1938 WH

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NISSUI S-CUTTER ROTARY SCREENLESS GRANULATOR PLASTICS

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STAR AUTOMATION PALLET CHANGER FOR PLASTIC MOLDING

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Thermatron F10-55 RF Heat Sealer

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COOLING FAN 110V VOLT AC 208 MM X 72 MM A20872V1HBL NEW

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LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

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RF Welder 10 KW w/ 84" 4-Station Turntable

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BULK PLASTIC DRYER, MIXER

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TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 150 /75/75

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CONAIR DEHUMIDIFYING DRYER MODEL 1800020601 Working

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Mini-Weld Model 5 Airless Plastic Welder 5500HT USC

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CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

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BRANSON 910IW ULTRASONIC WELDER

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Conair Wortex Plastic Granulator LP-330 GRINDER

$1500.00
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

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Thermal Care Water Coolded Chiller

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ULTRASONIC WELDER HORN & ANVIL

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B200 POSIMAX ADDITIVE FEEDER-NEW

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BRAND NEW HEAVY DUTY INDUSTRIAL GRANULATOR (20 HP)

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BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

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MSI Contols APEX-6 6 Zone Mold Controller Multi Phase

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KAMWELD 43-HS PLASTIC WELDING THERMOPLASTIC WELDER

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Branson 2000 Custom UltraSonic Welder

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Leister Triac S Hot Air Blower Heat Gun Plastic Welder

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Mcelroy Pipe Fusion Machine

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Pillar Industries CYCLE DYNE RF Generators Model #AA-10

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RF Welder Thermatron 15 KW

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MINIATURE FOOT SWITCH 6 FOOT CABLE 15A NO/NC OUTPUT NEW

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Moeller Devicon Ultrasonic Welder - Sealer - Packaging

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RF Welder Kabar 6-8KW RF Heat Sealer

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Conair Franklin Dryer CD60 Computer Controlled

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TUC Thermolator

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Seelye Plastic Welder

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Dryer for Plastic Injection Molding (Quad-Unit)

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LABCONCO( LAB HOOD)

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PLASTICS SIGHT GLASS LOADER-MODEL C1K

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Conair Wor-Tex Plastic Grinder

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SMC LVA, High Purity Air Operated Single Valve L@@K

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NISSUI S-CUTTER PARTS SCREENLESS GRANULATOR PLASTICS

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6" GLOUCESTER FOAM EXTRUDER WITH DOWN STREAM EQUIPMENT

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230100 Sentra Controller Power Module w/ Interface Card

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