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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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BRANSON ULTRASONIC WELDER MODEL # 8400 USED

$500.00
RF Welder Thermatron 15 KW

$25500.00
Quick-LE Hot Air Welder Plastic Repair Kit

$0.99
Plastics Granulator Line

$0.99
13 Nelmor 8X10 Plastic Granulator Chipper Knives /Blade

$500.00
Sterlco Oil Heater

$500.00
Branson Aluminium green ultrasonic booster

$40.00
6" GLOUCESTER FOAM EXTRUDER WITH DOWN STREAM EQUIPMENT

$10000.00
Mecasonic Ultrasonic Rotation Welder Omega II

$2500.00
Thermatron RF Welder Heat Sealer 30kw 6kw

$131000.00
Audion PAC HORIZONTAL MEDICAL BAND HEAT SEALERS 552F

$1999.99
Thermalators

$300.00
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder

$1500.00
RF Welder Kabar 6-8KW RF Heat Sealer

$12000.00
KAMWELD (?) PLASTIC WELDING THERMOPLASTIC WELDER TORCH

$9.99
Sterlco Dual Zone Temperature Controller

$595.00
CONAIR VACUUM LOADER-CONVEYING MATERIAL HANDLING

$400.00
COOLING FAN 110V VOLT AC 208 MM X 72 MM A20872V1HBL NEW

$79.99
Airless Plastic Welder

$50.00
CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
ROTRON,VACUUM/BLOWER

$327.00
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic

$1850.00
5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$750.00
Una-Dyn Process Equipment Air Assembly

$36.00
MCELROY 424308 #14 PIPE PE FUSION HEATER IRON 1200W NR

$221.99
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1295.00
20 Khtz Ultrasonic welding hand probe Dukane 41D26 New

$199.00
BRANSON ECI-1 COMMUNICATIONS INTERFACE

$45.00
KAMWELD 43-HS PLASTIC WELDING THERMOPLASTIC WELDER

$9.99
Primus-Sievert PS 2001 heat-welding gun

$199.99
McElroy 2" Master Insert Set Pipe Fusion Poly 14 NEW!!!

$174.00
RF Welder Cosmos 10-15KW with Rotarty Indexer

$23500.00
Hot oil temperature controller advantage regal rdo-1230

$2750.00
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
2 - Branson 921 ao long stroke ultrasonic welder

$999.98
40 Khtz Ultrasonic horn analyzer probe Dukane new

$99.00
Temperature Controllers Sterlco Plastics

$450.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp

$5650.00
Branson 922RA ultrasonic converter

$400.00
Novatec Color Feeder with Hopper AF-1, 6153 WH

$199.00
Novatec Hopper AF-1, #6155 WH

$30.00
100MM BUSS EXTRUDER

$10000.00
Conair 9Kw Mold Temperature Control Unit

$400.00
HOT AIR TYPE K-NULL-R PLASTIC WELDING GUN

$124.98
20 Khtz Ultrasonic welding transducer Dukane 110-3122

$99.00
McElroy No.2LC Pipe Fusion Welder Machine Tool Plastic

$800.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Maguire Material Blender - 100lbs per hour

$2950.00
20 Khtz Ultrasonic horn analyzer probe Dukane welding

$199.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
30HP NELMOR PLASTIC GRANULATOR MODEL 1620 YEAR 1999

$7900.00
AUTOHOPPER vacuum loader

$1195.00
Sterlco Temperature Control Units Plastics TCU

$1000.00
Conair plastic filter units

$450.00
GSR FU-2000 Pipe Fusion Machine Welder Fuser Fuseal Pro

$50.00
Branson welding actuator 921AOS Plastics

$390.00
HDPE Slipline Pipe Puller Butt Fusion NoReserve McElroy

$100.00
Conair Franklin Desiccant Plastics Dryer D60A 460/3/60

$579.99
MCELROY #217201 PIPE FUSION MACHINE *gr8cond* NR

$695.00
Temperature controller Sterlco M8424 water

$320.00
ARID-X DRI-AIR APD-4 DESICCANT PLASTIC PELLET DRYER

$4850.00
Novatec 30 lb Capacity Hopper AF-1, 6156 WH

$25.00
Cumberland 5 HP Granulator 9"x6" Feed, 2.5" Dia. Out

$800.00
McElroy Socket Fusion PE Gas Pipe heater plates Chamfer

$39.00
Polypropylene Welding Rod 5/32 (4mm) 20 lb spool

$89.95
Plastic Extrusion Welder Munsch SK-SC - Low Hours -

$2495.00
MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR

$1195.00
RF Welder A & G 10KW RF Heat Sealer

$12500.00
Branson ultrasonic converter/booster

$250.00
Pillar Industries CYCLE DYNE RF Generators Model #AA-10

$1199.00
BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

$499.95
COOLING FANS 12V VOLT DC 120 MM X 38 MM NEW LOT OF 2

$49.99
Brand New Heavy Duty Industrial Granulator

$1195.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
MINIATURE FOOT SWITCH 6 FOOT CABLE 15A NO/NC OUTPUT NEW

$24.99
Central PE Butt Fushion Machine

$350.00
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

$9.99
Conair DL 25 Dryer/Hopper

$600.00
Conair Tempro Oil Heater

$79.99
BRANSON WELDER GENERATOR 940 AND CONTROL SET

$250.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Conair 100 cfm Desiccant Dryer

$350.00
46MM BUSS KNEADER EXTRUDER

$8000.00
Novatec 30 lb Capacity Hopper AF-1, 6154 WH

$30.00
Dri-Pac Desiccant Dryer & 150lb Una-Dyn Hopper Plastic

$1199.00
Leister Triac S Hot Air Blower Heat Gun Plastic Welder

$199.00
ConAir TrueBlend 3 Station Mixer & Hopper, + Controls

$4400.00
Plastics dryer vacuum conveyors dhd-4 unadyn filters

$4750.00
Dryer for Plastic Injection Molding (double unit)

$1175.00
McElroy No. 14 Pipe Fusion Welder Machine Tool Plastic

$1300.00
Branson Aluminium Ultrasonic blue booster

$40.00
BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

$1299.99
TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 150 /75/75

$4500.00
H100 Autobagger and P100 Printer

$1250.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

$200.00
MATSUI DRYER M/N: DMZ-240 & S/S INSULATED HOPPER

$3995.00
5 HP Plastic Injection Mold Scrap GRINDER Granulator

$399.00