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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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SONOBOND sureWeld 20 ultrasonic Plastic WELDER clean

$750.00
PLASTICS SIGHT GLASS LOADER-MODEL C1K

$500.00
BRANSON ULTRASONIC WELDER 910IW Sonic Plastic Bonder

$2200.00
Hot oil temperature controller advantage regal rdo-1230

$2750.00
plastic pellet dryer/dessicator

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NEW McElroy No.14 Pipe Fusion Machine Welder HDPE PE

$2825.00
Urethene Mini Weld Model 5 5500HT Airless Plastic Welde

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AEC WHITLOCK WD-100Q DESICANT PLASTIC MATERIAL DRYER

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Conair 100 cfm Desiccant Dryer

$350.00
30HP NELMOR PLASTIC GRANULATOR MODEL 1620 YEAR 1999

$7900.00
Maguire Material Blender - 100lbs per hour

$2950.00
Conair plastic filter units

$450.00
B200 POSIMAX ADDITIVE FEEDER-NEW

$1500.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
Quick-LE Hot Air Welder Plastic Repair Kit

$104.03
RF Welder Thermatron 15 KW

$25500.00
RF Welder Kabar 6-8KW RF Heat Sealer

$12000.00
MSI Contols APEX-6 6 Zone Mold Controller Multi Phase

$399.00
Quick-LE Hot Air Welder Plastic Repair Kit

$599.99
BRANSON 900 SERIES ULTRASONIC WELDER MODEL 921

$499.95
McElroy Sidewall Fusing Machine w/Heater Iron

$189.99
McElroy "Mini Mac" Plastic Fusing Kit w/Heater Iron

$169.99
100MM BUSS EXTRUDER

$10000.00
Temperature controller Sterlco M8424 water

$320.00
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1295.00
CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
HOT AIR TYPE K-NULL-R PLASTIC WELDING GUN

$148.99
Plastics dryer vacuum conveyors dhd-4 unadyn filters

$4750.00
DUKANE ULTRASONIC WELDER CONVERTER 110-3122

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Sonic welding horn 730-001-021

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VERY NICE CONAIR COMPU-DRY DRYER W/ NOVATECH NPH-HOPPER

$2990.00
LEISTER 3000 HOT AIR GUN/WELDER TOOL,120V,1200 DEGREE F

$74.99
PLASTIC PROCESS EQUIPMENT P161 DRYER

$1000.00
20 Khtz Ultrasonic welding transducer Dukane 110-3122

$150.00
Branson 901 AES Ultrasonic Welder Actuator 1000 Watt

$1499.99
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic

$800.00
TUC Thermolator

$500.00
Mecasonic Ultrasonic Rotation Welder Omega II

$2500.00
Sterlco Dual Zone Temperature Controller

$595.00
Branson welding actuator 921AOS Plastics

$390.00
20 Khtz Ultrasonic welding transducer Dukane 110-3122A

$100.00
Conair Franklin Dryer CD60 Computer Controlled

$750.00
20 Khtz Ultrasonic welding hand probe Dukane 41D26

$199.00
MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR

$1295.00
CONAIR DEHUMIDIFYING DRYER MODEL 1800020601 Working

$49.99
USED RF HEAT SEALING MACHINE - 1KW HALL DIELECTRIC

$9400.00
Electrofusion Control Box

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PLASTIC ADDITIVE MICRO FEEDER-B175

$700.00
PulseCooling UNIT FOR PLASTIC INJECTION MOLDING COOLER

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McElroy 1-1/4" - 2" Fusing Machine w/Heater Iron

$189.99
BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

$1299.99
MATSUI DRYER M/N: DMZ-240 & S/S INSULATED HOPPER

$3995.00
Moeller Devicon Ultrasonic Welder - Sealer - Packaging

$7200.00
LOT *2* MCELROY MINI MC MINIMC PIPE FUSION w/HEATER NR!

$675.22
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder

$1500.00
LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING

$220.00
Thermal Care Water Coolded Chiller

$3000.00
Branson 8400 Ultrasonic Welder 800 series (used)

$1500.00
ConAir TrueBlend 3 Station Mixer & Hopper, + Controls

$4400.00
RF Welder A & G 10KW RF Heat Sealer

$12500.00
Aluminum 40 Khtz Ultrasonic welding horn Dukane

$19.99
Christie Connectra Pipe Butt Fusion 8" Plastic Welder

$3000.00
Forsthoff Quick LE Heat Welding Hot Air Leister Gun New

$369.00
BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

$499.95
KABAR HEAT SEALER GOOD USED COND. (our #062408-10)

$4000.00
Bry-Air 100 cfm Desiccant Dryer

$250.00
McElroy No. 14 Pipe Fusion Welder Machine Tool Plastic

$1800.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp

$5650.00
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves

$15.00
Thermatron F10-55 RF Heat Sealer

$5000.00
RF Welder 10 KW w/ 84" 4-Station Turntable

$20000.00
StopCock Two Way Shut Off Valve Valves with Hose Barbs

$17.00
Extrusion Stainless Steel Cooling Tank w/pump, 2063 WH

$999.00
BRANSON 920IW+ plastic welder PARTS UNIT +900M parts

$4.99
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
Temperature Controllers Sterlco Plastics

$450.00
230100 Sentra Controller Power Module w/ Interface Card

$29.99
40 Khtz Ultrasonic welding hand probe Dukane new

$150.00
BRAND NEW HEAVY DUTY INDUSTRIAL GRANULATOR (20 HP)

$7495.00
PVC plastic bars grey

$19.00
Brand New Heavy Duty Industrial Granulator

$1195.00
20 Khtz Ultrasonic welding probe Dukane New

$199.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

$9.99
RF Welder Cosmos 10-15KW with Rotarty Indexer

$23500.00
AUTOHOPPER vacuum loader

$1195.00
NOVATEC 100 LB HOOPER DRYER SERIAL NO 3-3898-0192

$99.99
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

$200.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
Conair DL 25 Dryer/Hopper

$600.00