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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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Mustang Plastic Pipe Squeezeoff Tool
$59.99
Una-Dyn 200 lb. Dryer
$2000.00
IMS PLASTIC GRANULATOR 7 1/2 HP # LP 86
$1650.00
Shalco Shell Molding Machine
$500.00
IMS PLASTIC GRANULATOR GRINDER 10 HP ALMOSE NEW
$1700.00
Advantage Intelli-Temp Display Board
$4.99
Hot oil temperature controller advantage regal rdo-1230
$2750.00
RF Welder Cosmos 10-15KW with Rotarty Indexer
$23500.00
ConAir TrueBlend 3 Station Mixer & Hopper, + Controls
$4800.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods
$200.00
HPM 8" EXTRUDER 40:1
$120000.00
GSR FU-1200 PLASTIC PIPE FUSION WELDER CONTROL UNIT NR
$250.00
RF Welder Kabar 6-8KW RF Heat Sealer
$12000.00
Temperature controller Sterlco M8424 water
$320.00
TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 380/190/190
$7500.00
Conair plastic filter units
$450.00
McElroy No. 14 PitBull Fusion Machine
$1294.69
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer
$6195.00
BAC WATER - COOLING TOWER 120 TON - BALTIMORE AIRCOIL
$6500.00
3.250" COMPOUND/PELLETIZING EXTRUSION LINE
$15500.00
ENFIELD ENFUSION PIPE FUSING ELECTROFUSION FUSION WELD
$995.00
Enfield Enfusion Pipe Fusing Electrofusion Fusion Weld
$1150.00
USED BALL & JEWELL PLASTIC GRINDER - NO RESERVE!
$200.00
Leister CH-6060 Sarnen Triac S Hot Air Blower
$75.01
NOVATEC DRYER MDM-50
$5000.00
Pac seal 200
$1.00
Foremost HD-6 10 HP 14x18 Plastic Granulator Grinder
$3500.00
StopCock Two Way Shut Off Valve Valves with Hose Barbs
$17.00
Mecasonic Ultrasonic Rotation Welder Omega II
$1300.00
Cumberland Grinder, 150 HP Granulator, Plastic Grinder
$49500.00
IMS PLASTIC GRANULATOR 5 HP
$525.00
PLASTIC GRANULATOR NISSUI S-CUTTER ROTARY SCREENLESS
$958.00
Mustang Plastic Pipe Squeezeoff Tool
$49.99
ADVANTAGE PUMP TANK STATION PROCESS CHILL WATER
$18000.00
Klinger Motion Master 2000RX 4-Axis Motor Controller
$237.00
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves
$15.00
PLASTIC NISSUI S-CUTTER SCREENLESS GRANULATOR
$6400.00
McElroy # 618 Fusion Machine
$24500.00
Temperature Controllers Sterlco Plastics
$350.00
MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR
$795.00
Leister CH-6060 Sarnen Triac S 120V Hot Air Blower NR
$104.49
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp
$5650.00
Conair Self-Contained Vacuum Loader Model: DB12
$199.99
Conair Hopper Loader TLM 230V MLC2-120
$249.99
Intermac OT 1500 Granite & Sone CNC Router 5'x10' -2004
$79000.00
TUC Thermolator
$150.00
Cam and Groove Couplings for HDPE pipe fusion tool APG
$200.00
Plastics dryer vacuum conveyors dhd-4 unadyn filters
$4750.00
Cumberland Grinder, 100 HP Granulator, Plastic Grinder
$34500.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"
$9.99
AUTOHOPPER vacuum loader
$1195.00
Conair Franklin Desiccant Plastics Dryer D60A 460/3/60
$529.99
WHITLOCK HOT AIR DRYER #HA150
$675.00
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder
$899.99
Conair Granulator 50 Hp Plastic Grinder CK1831, 1998
$24500.00
Branson welding actuator 921AOS Plastics
$390.00
Brand New Heavy Duty Industrial Granulator
$695.00
15 HP Nelmor Plastic Scrap GRINDER Granulator 12x20 _NR
$2900.00
Leister Triac Drive Welder Plastic Sealer track roofing
$291.50
Daikin chiller PCB AKZ306 DHA00794F
$380.00
DUKANE ULTRASONIC WELDER WITH CONTROLLER (1PHASE) NR!!
$99.95
BATTENFELD PLASTIC GRANULATOR / GRINDER MODEL 1012 BP
$1.25
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic
$1685.00
HOPPER DRYER FOR INJECTION MOLDING IMS HD-750-50
$775.00
DUKANE ULTRASONIC WELDER MODEL 43D255
$399.95
Sakas traveling cross cut saw
$950.00
Branson 910iw Ultrasonic Plastic Welder Series 900
$2300.00
PLASTIC GRANULATOR NISSUI S-CUTTER PARTS SCREENLESS
$204.00
Branson Ultrasonic Welder Series 900 MDL 910 IW
$1799.98
Leister CH-6060 Sarnen Triac S Heat Gun NICE!!!
$107.50
Powered 42" feed rolls
$9999.00
ALPS SX-3 Leak Detector inline 3 Stations 60-80BPM
$2100.00
BRANSON ULTRASONIC WELDER MODEL 490
$149.00
Brand New Heavy Duty Industrial Granulator
$1495.00
Cattinair Paint Line, 2005 Fully Automated Paint Booth
$89000.00