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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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4" Pipe Straightener for PE Pipe Fusion (Clamshell)
$349.99
McElroy 2" IPS Cold Ring PE Fusion Pipe Holder
$49.99
Temperature Controllers Sterlco Plastics
$350.00
REDUCED! GRANULATOR GRINDER drum type 25 hp stainless
$3750.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp
$5650.00
ABRASIVE FINISHING INC DEBUURING MACHINE
$599.00
Novatec MD-25 Dryer Unit, w/ Controls
$750.00
CADILLAC EAGLE 2000 HOT AIR BLOWER HEAT GUN LEISTER
$169.99
INJECTION MOLDING
$77.00
EMX-2 48" X 7" Acrylic Strip Heater 48 inch
$399.00
Forsthoff Quick LE Heat Welding Hot Air Gun New
$399.00
Daikin chiller PCB AKZ306 DHA00794F
$380.00
125 Gal Live Bottom Vibrascrew - Vibrating bottom tank
$2750.00
PLASTIC PIPE WELDER PIPE FUSION CENTRAL NO RESERVE
$350.00
10 HP GRINDER Gloucester Engineering model 1012-BP-10
$2250.00
Brand New Heavy Duty Industrial Granulator
$695.00
Application Engineering (AEC) TDW-1 Heater Unit, Used
$149.99
Hot oil temperature controller advantage regal rdo-1230
$2750.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV
$54.49
VERY NICE AEC WHITLOCK VACUUM POWER UNIT MODEL VTP-7.5
$1899.00
PLASTIC GRANULATOR NISSUI S-CUTTER PARTS SCREENLESS
$204.00
SM ENGINEERING ULTRASONIC WELDER TELSONIC MPS-2 CNTLR
$795.00
Quad Dryer for Plastic Injection Molding
$1675.00
THOMAS WILEY LABRATORY GRINDING MILL
$750.00
1995 Sterlco Ball & Jewell Plastic Granulator MD1216
$1499.99
Cumberland Grinder, 150 HP Granulator, Plastic Grinder
$49500.00
VERY NICE CONAIR COMPU-DRY DRYER W/ NOVATECH NPH-HOPPER
$2990.00
Application Engineering (AEC) TDW-1ME Heater Unit, Used
$145.00
McElroy 2" IPS Chamfer/Depth Gauge for Plastic Pipe
$20.50
GSR FU-1200 PLASTIC PIPE FUSION WELDER CONTROL UNIT NR
$29.95
McElroy 1" CTS Cold Ring PE Fusion Pipe Holder
$49.99
Branson welding actuator 921AOS Plastics
$390.00
Rapid 79K Plastic Grinder / Granulator 8" x 8"
$399.99
Inclined Barrel Mixer for plastics Foremost Machine
$750.00
Sterling Plastic Shredder 10 HP, Size Reduction
$6999.00
unifusion 2001 series electrofusion processor ef tech
$1499.99
100MM BUSS EXTRUDER
$9500.00
1995 Sterlco Ball & Jewell Plastic Granulator MD1216
$1499.99
Forsthoff Quick LE Heat Welding Hot Air Gun New
$369.00
3.25" EXTRUSION REPRO PELLETIZING LINE
$13000.00
NOVATEC DRYER MDM-50
$5000.00
7.5 hp Acme Plastics Machines model 1012 GRINDER
$1950.00
2CU McElroy PE PIPE FUSION MACHINE
$850.00
BRANSON ULTRASONIC CONVERTER PLASTIC WELDER ?
$10.99
Unit Instruments UFC-1000 Mass Flow Controller
$246.51
NELMOR GRANULATOR / GRINDER # G1012LS 7.5 H.P. USED
$500.00
2000 Conair Plastic Granulator Granulation Mill model C
$5999.99
24 kw CONAIR temperature control water heater TW-1
$1450.00
Grey pvc type II ,46 x 48 x 1 gray plastic
$169.00
12" 1500 ft Shrink Wrap Centralfold Film 100 Gauge PVC
$45.59
Branson Ultrasonic Welder Series 900 MDL 910 IW
$1899.98
Hot air plastic welder Seelye brand
$50.00
Plastic Welding Rods PVC - NYLON - ABS 50 PACK
$9.95
Klinger Motion Master 2000RX 4-Axis Motor Controller
$189.99
Avalon Safety Cycle 2 Vision System
$1500.00
Cattinair Paint Line, 2005 Fully Automated Paint Booth
$89000.00
Plastics dryer vacuum conveyors dhd-4 unadyn filters
$4750.00
GEAR BOX davis standard blue ribbon 2 1/2 " gearbox
$12900.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"
$9.99
Synthetic Plastic Welding Kit PVC - NYLON - ABS
$47.90
Forsthoff Quick LE Heat Welding Hot Air Gun New
$399.00
Application Engineering (AEC) TDW-1ME Heater Unit, Used
$175.00
Reliance Electric Temp Display
$19.99
Acme Plastic Machines 3 hp GRINDER model RAB10 process
$1250.00
DUKANE ULTRASONIC GENERATOR UNUSED mod 40A321
$899.00
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves
$15.00
Sonics H-540 Ultrasonic Hand Held Welder, Never Used
$3500.00
PLASTIC GRANULATOR NISSUI S-CUTTER ROTARY SCREENLESS
$958.00
Eagle Signal TC2 I/C TypeJ 0-600 Deg. F Temp Controller
$19.99
AMTECH 40 KHZ ULTRASONIC TUBE SEALER BRANSON CONTROLLER
$1199.00
Thermosonics P-330 Ultrasonic Welder and Power Supply
$750.00
Dryer for Plastic Injection Molding
$789.00
LARGE HOPPER MAGNET
$25.00
MCELROY PIPE FACER PLASTIC PE PIPE FUSION MANUAL 6.75"
$235.91
72" x 20" CLASSIFIER by Ajax
$2835.00
Dukane 20kHz 1500 watt Ultrasonic Pl Welder w/ULTRACOM
$1800.00
McElroy 2" IPS Socket Fitting Holder for PE Fusion
$49.99
1998 Branson Orbital 107 Sonic Vibration Welding Machin
$2999.99
Temperature controller Sterlco M8424 water
$320.00
MCELROY DATALOGGER BUTT FUSION DL4501 TDS RECON PC
$900.00
Branson 20 kHz boosters for all 400 and 800 series weld
$9.99
PLASTIC NISSUI S-CUTTER SCREENLESS GRANULATOR
$6400.00
SHEETS OF NATURAL DELRIN
$70.00
TUC Thermolator
$150.00
Accusonics Inc.Catenoidal Ultrasonic Horn
$9.99
Unit Instruments UFC-1000 Mass Flow Controller
$262.85
Conair plastic filter units
$450.00
McElroy 1/2" CTS Cold Ring PE Fusion Pipe Holder
$49.99
TMI IMPACT TESTER
$800.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV
$54.49
35MM MARIS TWINSCREW EXTRUDER
$22500.00
Central BS-4 Pipe Fusion Plastic Welder Mcelroy Machine
$999.99
SuperMax YCM-1 1/2VS
$1000.00
Conair Franklin Vacuum Timer Hopper Magnetic Feeder
$399.99
Cumberland Grinder, 100 HP Granulator, Plastic Grinder
$34500.00
Unit Instruments UFC-1200A Mass Flow Controller
$262.85
5 HP Plastic Injection Mold Scrap GRINDER Granulator
$500.00
Hot Water Heater 9Kw 460 Volt -- Sterlco
$1250.00
Unit Instruments UFC-1000 Mass Flow Controller
$262.85