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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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Thermalators

$300.00
Conair 9Kw Mold Temperature Control Unit

$400.00
Plastic Extrusion Welder Munsch SK-SC - Low Hours -

$2495.00
RF Welder Kabar 6-8KW RF Heat Sealer

$12000.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

$9.99
COOLING FANS 12V VOLT DC 120 MM X 38 MM NEW LOT OF 2

$49.99
CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
5 HP Plastic Injection Mold Scrap GRINDER Granulator

$399.00
HDPE Slipline Pipe Puller Butt Fusion NoReserve McElroy

$100.00
100MM BUSS EXTRUDER

$10000.00
HOT AIR TYPE K-NULL-R PLASTIC WELDING GUN

$124.98
McElroy No. 14 Pipe Fusion Welder Machine Tool Plastic

$1300.00
KAMWELD 43-HS PLASTIC WELDING THERMOPLASTIC WELDER

$9.99
Branson Aluminium Ultrasonic blue booster

$40.00
Leister Triac S Hot Air Blower Heat Gun Plastic Welder

$199.00
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic

$800.00
Novatec 30 lb Capacity Hopper AF-1, 6156 WH

$25.00
Hot oil temperature controller advantage regal rdo-1230

$2750.00
Sterlco Oil Heater

$500.00
Thermatron RF Welder Heat Sealer 30kw 6kw

$131000.00
Temperature controller Sterlco M8424 water

$320.00
30HP NELMOR PLASTIC GRANULATOR MODEL 1620 YEAR 1999

$7900.00
AUTOHOPPER vacuum loader

$1195.00
2 - Branson 921 ao long stroke ultrasonic welder

$999.98
5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$750.00
20 Khtz Ultrasonic horn analyzer probe Dukane welding

$199.00
Dryer for Plastic Injection Molding (double unit)

$1175.00
MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR

$1195.00
TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 150 /75/75

$4500.00
20 Khtz Ultrasonic welding transducer Dukane 110-3122

$99.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

$200.00
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic

$1850.00
CONAIR VACUUM LOADER-CONVEYING MATERIAL HANDLING

$400.00
ARID-X DRI-AIR APD-4 DESICCANT PLASTIC PELLET DRYER

$4850.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Pillar Industries CYCLE DYNE RF Generators Model #AA-10

$1199.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp

$5650.00
MATSUI DRYER M/N: DMZ-240 & S/S INSULATED HOPPER

$3995.00
Sterlco Temperature Control Units Plastics TCU

$1000.00
Novatec Hopper AF-1, #6155 WH

$30.00
Branson ultrasonic converter/booster

$250.00
MCELROY #217201 PIPE FUSION MACHINE *gr8cond* NR

$695.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
Branson 922RA ultrasonic converter

$400.00
BRANSON WELDER GENERATOR 940 AND CONTROL SET

$250.00
Temperature Controllers Sterlco Plastics

$450.00
Novatec 30 lb Capacity Hopper AF-1, 6154 WH

$30.00
Conair plastic filter units

$450.00
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1295.00
Airless Plastic Welder

$50.00
KAMWELD (?) PLASTIC WELDING THERMOPLASTIC WELDER TORCH

$9.99
Polypropylene Welding Rod 5/32 (4mm) 20 lb spool

$89.95
BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

$499.95
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
RF Welder Thermatron 15 KW

$25500.00
Conair 100 cfm Desiccant Dryer

$350.00
MINIATURE FOOT SWITCH 6 FOOT CABLE 15A NO/NC OUTPUT NEW

$24.99
Central PE Butt Fushion Machine

$350.00
Conair Franklin Desiccant Plastics Dryer D60A 460/3/60

$599.99
Conair DL 25 Dryer/Hopper

$600.00
MCELROY 424308 #14 PIPE PE FUSION HEATER IRON 1200W NR

$221.99
Plastics dryer vacuum conveyors dhd-4 unadyn filters

$4750.00
ConAir TrueBlend 3 Station Mixer & Hopper, + Controls

$4400.00
13 Nelmor 8X10 Plastic Granulator Chipper Knives /Blade

$500.00
RF Welder Cosmos 10-15KW with Rotarty Indexer

$23500.00
Dri-Pac Desiccant Dryer & 150lb Una-Dyn Hopper Plastic

$1199.00
McElroy Socket Fusion PE Gas Pipe heater plates Chamfer

$39.00
Audion PAC HORIZONTAL MEDICAL BAND HEAT SEALERS 552F

$1999.99
BRANSON ECI-1 COMMUNICATIONS INTERFACE

$45.00
40 Khtz Ultrasonic horn analyzer probe Dukane new

$99.00
Brand New Heavy Duty Industrial Granulator

$1195.00
McElroy 2" Master Insert Set Pipe Fusion Poly 14 NEW!!!

$174.00
Una-Dyn Process Equipment Air Assembly

$36.00
RF Welder A & G 10KW RF Heat Sealer

$12500.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

$1299.99
6" GLOUCESTER FOAM EXTRUDER WITH DOWN STREAM EQUIPMENT

$10000.00
COOLING FAN 110V VOLT AC 208 MM X 72 MM A20872V1HBL NEW

$79.99
Sterlco Dual Zone Temperature Controller

$595.00
Conair Tempro Oil Heater

$79.99
Mecasonic Ultrasonic Rotation Welder Omega II

$2500.00
Primus-Sievert PS 2001 heat-welding gun

$199.99
Plastics Granulator Line

$0.99
Maguire Material Blender - 100lbs per hour

$2950.00
ROTRON,VACUUM/BLOWER

$327.00
GSR FU-2000 Pipe Fusion Machine Welder Fuser Fuseal Pro

$50.00
BRANSON ULTRASONIC WELDER MODEL # 8400 USED

$500.00
20 Khtz Ultrasonic welding hand probe Dukane 41D26 New

$199.00
Branson welding actuator 921AOS Plastics

$390.00
Novatec Color Feeder with Hopper AF-1, 6153 WH

$199.00
H100 Autobagger and P100 Printer

$1250.00
Cumberland 5 HP Granulator 9"x6" Feed, 2.5" Dia. Out

$800.00
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder

$1500.00
Branson Aluminium green ultrasonic booster

$40.00