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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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Micro 86 injecta chroma liquid color pump
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Polymer Systems Inc 11x16 15 HP Granulator Grinder
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MCELROY PIPE FACER PLASTIC PE PIPE FUSION MANUAL 6.75"
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MOELLER DEVICON ULTRASONIC WELDER - SEALER - PACKAGING
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MPG GRANULATOR PLASTIC INJECTION
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SCREENLESS GRANULATOR NISSUI S-CUTTER SKN-22
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DUKANE Ultrasonic Plastic Welder Model 41C28 + Booster
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3.5in NRM Extruder
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Forsthoff Quick LE Heat Welding Hot Air Gun New
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BRANSON ULTRASONIC WELDING ERGO BASE
$250.00
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NOVATEC VACUUM LOADER CONTROLLER - VL-5 NEW
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GC-7020 IMS LP-49-SC GRANULATOR, 460V, 3PH, 2HP,
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MCELROY PIPE FUSION MACHINE UP TO 4 INCH NICE SHAPE
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LEISTER HEAT SEALER, WELDER SYSTEM CH-6056, TYP-5000
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Foremost 15HP Granulator w/ Blower, Conical Dairy Top
$8500.00
Cumberland Grinder, 100 HP Granulator, Plastic Grinder
$34500.00
Branson welding actuator 921AOS Plastics
$390.00
2004 Cumberland Model 1620X Plastic Granular Grinder
$6000.00
McElroy 1/2" CTS Cold Ring PE Fusion Pipe Holder
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2003 Cumberland Model 1620X Plastic Granular Grinder
$5999.99
Cryogenic parts Deflasher (AGA Accuflash-S)
$1000.00
GC-7013 BRANSON 400ACT / 160 SONIC WELDER 400 SERIES
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PLASTIC WELDER
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Branson ultrasonic welder booster olive dukane
$0.99
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves
$15.00
Branson ultrasonic welder booster purple dukane
$0.99
BRANSON 1000 WATT ULTRASONIC PLASTIC WELDER 901AE 900M
$1995.00
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Demtech VM99 Wedge Welder for Roofing
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Ranger Automation Pick and Place Robot,
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excrusion welder
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GC-64 POLYMER SYSTEMS AUGER GRANULATOR MODEL 88E 5HP
$149.95
Color MMI man-machine Interface Dukane ultrasonic
$19.99
Temperature Controllers Sterlco Plastics
$350.00
GC-7010 FLOYD DRIVES MD4112 CONSTANT TENSION WIND-UP
$749.95
Branson Ultrasonic Welder Series 900 MDL 910 IW
$1899.98
Innogaz Electrofusion Control Plastic Fusion Welder
$499.99
Crain 980 Heat Weld Gun and 975 Power Groover w/ Extras
$199.99
Zinser HOT HEAT GUN PLASTIC WELDER ROOFING
$199.00
2 CONAIR PLASTIC DRYER W/SC-30 CAROUSEL DRYER.
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Cumberland Grinder, 150 HP Granulator, Plastic Grinder
$49500.00
GC-7018 HAMILTON GRANULATOR OPENING IS 7 1/4" X 7 1
$249.95
Cumberland GRAN 2KN Granulator 3/16" 3/8" Screens
$100.00
GC-7001 NOVATEC MD-25 / MD- HOPPER 460V,1PH, 2.2 KVA
$499.95
CARVER C LABORATORY PRESS
$249.99
NOVATEC VACUUM LOADER CONTROLLER - VL-4 NEW
$250.00
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic
$919.00
Conair plastic filter units
$450.00
Dryer for Plastic Injection Molding Double unit
$1150.00
Branson ultrasonic welder booster gold dukane
$0.99
FU-2000 -FISCHER SLOANE ELECTRO FUSION WELDING MACHINE
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GC-7014 FLOYD DRIVES MD4112 CONSTANT TENSION PAY-OUT
$799.95
80MM BAKERPERKINS TWINSCREW EXTRUDER
$10000.00
Klinger Motion Master 2000RX 4-Axis Motor Controller
$149.99
Hot oil temperature controller advantage regal rdo-1230
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Pillar CYCLE DYNE RF Generators Model #AA-10 Welders
$699.00
McElroy Multi- Mc Socket Heater & Adapter set
$315.02
Ball & Jewel plastic auger grinder
$450.00
INTRUCTION MANUAL BRANSON SONIC POWER
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Bunting Drawer Magnet for Injection Molding Works!
$125.00
AEC WHITLOCK DRYER PLASTIC DRYER PM0112-011
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Foremost 15HP Granulator w/ Blower, Conical Dairy Top
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Ranger Automation Pick and Place Robot, 2005
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Maguire Liquid color pump Mpa-3-34
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LEISTER VARIMAT V AUTOMATIC HOT AIR WELDER ROOFING MEMB
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4.5in Sterling Extruder
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Branson 20 kHz boosters for all 400 and 800 series weld
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Novatec Vacuum Loader Controller Model VL1 VL-3
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Used ULTRA SONIC SEAL Ultrasonic Welder USW10
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