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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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LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING
$210.00
Sterling Plastic Shredder 10 HP, Size Reduction
$6999.00
Ultrasonic Welder Horn -Rectangular Alum/chrome
$40.00
CONAIR MAGUIRE WEIGH BLENDER 3KG LOAD CELL - WARRANTY!
$99.00
McElroy # 618 Fusion Machine
$24500.00
Enfield Enfusion Pipe Fusing Electrofusion Fusion Weld
$1150.00
Plastic Welding Gun with Regulator, Barely used
$0.99
UNITHERM PROCESS FUSION POWDER SPRAYING TOOL SET "NICE"
$89.99
Branson Aluminium green ultrasonic booster
$40.00
CONAIR MICROTEMP MOLD TEMPERATURE CONTROLLER
$250.00
Una-Dyn 200 lb. Dryer
$2000.00
Tecnodue Orion tool Socket Fusion Welding GEOTHERMAL
$122.50
ARROW SLITTER 50"
$13500.00
Branson Aluminium Ultrasonic blue booster
$40.00
Daikin chiller PCB AKZ306 DHA00794F
$380.00
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder
$899.99
McElroy 2" Master Insert Set Pipe Fusion Poly 14 NEW!!!
$174.00
Klinger Motion Master 2000RX 4-Axis Motor Controller
$237.00
Thermal Care 5 ton Water Cooled Chiller
$1750.00
CONAIR MICROTEMP MOLD TEMPERATURE CONTROL
$250.00
AUTOHOPPER vacuum loader
$1195.00
Forsthoff Quick LE Heat Welding Hot Air Gun New
$369.00
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic
$1685.00
Zapper PW10 Ultrasonic Plastics Welder - Almost New
$3299.00
Thermosonics P-330 Ultrasonic Welder and Power Supply
$750.00
VERY NICE CONAIR COMPU-DRY DRYER W/ NOVATECH NPH-HOPPER
$2990.00
DRYING HOPPERS ON CASTERS/2 350 LB. CONAIR HOPPERS
$375.00
Cumberland Grinder, 150 HP Granulator, Plastic Grinder
$49500.00
Brand New Heavy Duty Industrial Granulator
$695.00
USC 5500HT Mini-Weld Model 5 Airless Plastic Welder W@W
$9.99
IMS MEDIUM DUTY SCRAP GRINDER
$80.00
DUKANE ULTRASONIC WELDER W/ AUTO TRAC
$199.00
Conair 100 cfm Desiccant Dryer
$350.00
UNITHERM PROCESS FUSION POWDER SPRAYING TOOL SET "NICE"
$89.99
NEGITIVE PRESURE UNIT
$150.00
Touch Screen Man Machine Interface MMI Dukane
$49.99
MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR
$895.00
Dryer for Plastic Injection Molding (double unit)
$975.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods
$200.00
20HP NELMOR PLASTIC GRANULATOR MODEL RG-1220 M1
$4900.00
Plastic 5 Hp Amacoil Granulator
$700.00
LOT OF 9 WATER MANIFOLDS WITH VALVES/3 DOUBLES/6 SINGLE
$150.00
5HP WOR-TEX PLASTIC GRANULATOR MODEL LP 350
$1900.00
Piovan Dryer Model CDN2/2
$4500.00
Intermac OT 1500 Granite & Sone CNC Router 5'x10' -2004
$79000.00
TROYKE HEAVY DUTY CIRCULAR TABLE WITH HORZNTAL MOVEMNT
$125.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer
$6195.00
McElroy #2 CU Combination Butt Fusion Machine No. 2 2LC
$999.99
CONAIR MDC30 MOBILE DRYING/CONVEYING SYSTEM
$500.00
Branson Ultrasonic 947DA With 941AES Actuator Welder
$700.00
Brand New Heavy Duty Industrial Granulator
$695.00
Powder King plastic pulverizer
$70000.00
PLASTIC GRANULATOR NISSUI S-CUTTER ROTARY SCREENLESS
$958.00
AEC MOLD TEMPERATURE CONTROLLER
$250.00
CONAIR DUST COLLECTOR
$250.00
Branson 922RA ultrasonic converter
$400.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV
$54.49
Brand New Heavy Duty Industrial Granulator
$1495.00
20 Khtz Ultrasonic welding probe Dukane
$99.00
Laramy Plastic Welder *** NO RESERVE
$0.99
Thermal Care Air Cooled Chiller
$2350.00
LOT OF THREE TEMP CONTROLLERS
$200.00
WHITLOCK MATERIAL DRYER WITH DRYER CYLINDER
$150.00
HERCULES DENSIFIER
$15500.00
Cumberland Grinder, 100 HP Granulator, Plastic Grinder
$34500.00
Conair PowerFill Vacuum Conveying System Selectronic 5
$3995.00
PLASTIC NISSUI S-CUTTER SCREENLESS GRANULATOR
$6400.00
NOVATEC DRYER MDM-50
$5000.00
900AD Branson Actuator w/ 910BC Branson Power Supply
$500.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"
$9.99
3.250" COMPOUND/PELLETIZING EXTRUSION LINE
$16500.00
Sterlco Temperature Control Units Plastics TCU
$1000.00
Foremost HD-6 10 HP 14x18 Plastic Granulator Grinder
$3800.00
Aluminum 40 Khtz Ultrasonic welding horn Dukane
$19.99
BRANSON ULTRASONIC WELDER MODEL 8400
$399.95
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp
$5650.00
Branson 910iw Ultrasonic Plastic Welder Series 900
$2400.00
Gerrard Cat# 440 Cut to length plastic strip cutter
$550.00
CONAIR CYCLONE
$250.00
DUKANE ULTRASONIC WELDER MODEL 43D255
$499.95
Pac seal 200
$1.00
CONAIR MOLD TEMPERATURE CONTROLLER
$250.00
PLASTIC GRANULATOR NISSUI S-CUTTER PARTS SCREENLESS
$204.00
Mecasonic Ultrasonic Rotation Welder Omega II
$1800.00
GORTON CIRCULAR TABLE MODEL #215-1
$80.00
Conair DL 25 Dryer/Hopper
$600.00
BRANSON ULTRASONIC WELDER BASE
$201.50
Branson Ultrasonic Welder Series 900 MDL 910 IW
$1799.98
Conair Franklin Dryer CD60 Computer Controlled
$375.00
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic
$800.00
CUMBERLAND GRANULATOR
$9800.00
CONAIR DUST COLLECTOR
$250.00
CUMBERLAND PLASTIC GRINDER / SHREDDER
$500.00
ALPS SX-3 Leak Detector inline 3 Stations 60-80BPM
$4500.00