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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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FU-2000 -FISCHER SLOANE ELECTRO FUSION WELDING MACHINE
$99.00
Plastics dryer vacuum conveyors dhd-4 unadyn filters
$4750.00
Branson Ultrasonic Welder Series 900 MDL 910 IW
$1899.98
Ball & Jewel plastic auger grinder
$450.00
GC-7014 FLOYD DRIVES MD4112 CONSTANT TENSION PAY-OUT
$799.95
NOVATEC VACUUM LOADER CONTROLLER - VL-4 NEW
$250.00
McElroy 1/2" CTS Chamfer/Depth Gauge for Plastic Pipe
$20.00
Grey pvc type II ,46 x 48 x 1 gray plastic
$129.00
BRANSON ULTRASONIC WELDER HEAD
$199.00
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic
$919.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"
$9.99
MONITOR LEVEL SENSOR ROTARY
$5.00
BRANSON 1000 WATT ULTRASONIC PLASTIC WELDER 901AE 900M
$1995.00
Foremost 15HP Granulator w/ Blower, Conical Dairy Top
$9500.00
Ranger Automation Pick and Place Robot, 2005
$10500.00
Demtech VM99 Wedge Welder for Roofing
$2500.00
Branson ultrasonic welder booster gold dukane
$0.99
Foremost 15HP Granulator w/ Blower, Conical Dairy Top
$8500.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV
$54.49
Branson 20 kHz boosters for all 400 and 800 series weld
$9.99
excrusion welder
$300.00
Ranger Automation Pick and Place Robot,
$9500.00
NOVATEC VACUUM LOADER CONTROLLER - VL-5 NEW
$300.00
AEC WHITLOCK DRYER PLASTIC DRYER PM0112-011
$1500.00
Maguire Liquid color pump Mpa-3-34
$325.00
Branson welding actuator 921AOS Plastics
$390.00
Novatec 24 Port Material Conveying Sys w/ Comet SC-8
$1000.00
Branson ultrasonic welder booster olive dukane
$0.99
Micro 86 injecta chroma liquid color pump
$300.00
PLASTIC WELDER
$50.00
Bunting Drawer Magnet for Injection Molding Works!
$125.00
Hot oil temperature controller advantage regal rdo-1230
$2750.00
LEISTER HEAT SEALER, WELDER SYSTEM CH-6056, TYP-5000
$850.00
Quad Dryer for Plastic Injection Molding
$1675.00
Used ULTRA SONIC SEAL Ultrasonic Welder USW10
$1250.00
Haumiller: 12 Heads Automatic Grinding Machine
$17500.00
2 CONAIR PLASTIC DRYER W/SC-30 CAROUSEL DRYER.
$2500.00
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves
$15.00
MCELROY PIPE FUSION MACHINE UP TO 4 INCH NICE SHAPE
$1599.99
35MM MARIS TWINSCREW EXTRUDER
$20500.00
McElroy Sidewinder Clamp for Poly Fusion Pipe
$149.99
Branson 922Ja converter
$405.00
Klinger Motion Master 2000RX 4-Axis Motor Controller
$149.99
Forsthoff Quick LE Heat Welding Hot Air Gun New
$399.00
40 Khtz Ultrasonic welding aluminum horn Dukane
$9.99
10 Dukane Ultrasonic Transducer Ceramics 20 Khtz
$9.99
Pillar CYCLE DYNE RF Generators Model #AA-10 Welders
$699.00
MPG GRANULATOR PLASTIC INJECTION
$1000.00
Cumberland Grinder, 100 HP Granulator, Plastic Grinder
$34500.00
Forsthoff Quick LE Heat Welding Hot Air Gun New
$409.00
80MM BAKERPERKINS TWINSCREW EXTRUDER
$10000.00
McELROY 8" MILWAUKEE CUTTER FACER PIPE FUSION MACHINE
$999.99
Conair plastic filter units
$450.00
Dryer for Plastic Injection Molding Double unit
$1150.00
CARVER C LABORATORY PRESS
$249.99
Cumberland Grinder, 150 HP Granulator, Plastic Grinder
$49500.00
BRANSON ULTRASONIC WELDING ERGO BASE
$250.00
McElroy 1/2" CTS Cold Ring PE Fusion Pipe Holder
$39.99
3.5in NRM Extruder
$13000.00
Cryogenic parts Deflasher (AGA Accuflash-S)
$1000.00
GC-64 POLYMER SYSTEMS AUGER GRANULATOR MODEL 88E 5HP
$149.95
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV
$54.49
LEISTER VARIMAT V AUTOMATIC HOT AIR WELDER ROOFING MEMB
$3699.99
DUKANE Ultrasonic Plastic Welder Model 41C28 + Booster
$9.99
Temperature Controllers Sterlco Plastics
$350.00
24 kw CONAIR temperature control water heater TW-1
$1450.00
Tubing
$0.99
7.5 hp Acme Plastics Machines model 1012 GRINDER
$1950.00
INTRUCTION MANUAL BRANSON SONIC POWER
$19.99
4.5in Sterling Extruder
$35000.00
Novatec Vacuum Loader Controller Model VL1 VL-3
$9.50
GC-7010 FLOYD DRIVES MD4112 CONSTANT TENSION WIND-UP
$749.95
Crain 980 Heat Weld Gun and 975 Power Groover w/ Extras
$199.99
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic
$1600.00
MOELLER DEVICON ULTRASONIC WELDER - SEALER - PACKAGING
$7400.00
MCELROY PIPE FACER PLASTIC PE PIPE FUSION MANUAL 6.75"
$215.23
GC-7013 BRANSON 400ACT / 160 SONIC WELDER 400 SERIES
$999.95
Thermosonics P-330 Ultrasonic Welder and Power Supply
$750.00
Mcelroy Sidewinder Fusion Machine Welder ASW00111 "NR"
$203.80
125 Gal Live Bottom Vibrascrew - Vibrating bottom tank
$2750.00
12" 1500 ft Shrink Wrap Centralfold Film 100 Gauge PVC
$45.59
Innogaz Electrofusion Control Plastic Fusion Welder
$499.99
Color MMI man-machine Interface Dukane ultrasonic
$19.99
Acme Plastic Machines 3 hp GRINDER model RAB10 process
$1250.00
plastic werlder milwaukee1660-1 heavy duty 1/2'' drill
$150.00
SCREENLESS GRANULATOR NISSUI S-CUTTER SKN-22
$5000.00
2003 Cumberland Model 1620X Plastic Granular Grinder
$5999.99
GC-7020 IMS LP-49-SC GRANULATOR, 460V, 3PH, 2HP,
$249.95
Sterlco Temperature Control Unit Injection Molding
$850.00
Branson ultrasonic welder booster purple dukane
$0.99
Zinser HOT HEAT GUN PLASTIC WELDER ROOFING
$199.00
GC-7018 HAMILTON GRANULATOR OPENING IS 7 1/4" X 7 1
$249.95
Dri-Air Arid-X25FM Desiccant Dryer
$1800.00
SONIC WELDER BASE
$0.01
McElroy Multi- Mc Socket Heater & Adapter set
$152.45
Used 20 HP Cumberland Granulator, 14 x 16 Inches
$1500.00
Temperature controller Sterlco M8424 water
$320.00
Polymer Systems Inc 11x16 15 HP Granulator Grinder
$3200.00
MCELROY MINI-MAC 1/2" TO 1" PIPE FUSION MACHINE #3
$139.99
Cumberland GRAN 2KN Granulator 3/16" 3/8" Screens
$100.00