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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 947DA With 941AES Actuator Welder

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HFA UNDER PRESS PARTS DIVERTER 14" X 14" OPENING

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Conair 9Kw Mold Temperature Control Unit

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Plastic Extrusion Welder Munsch SK-SC - Low Hours -

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Kamweld KS-1 OLD Plastic Welding Tip 5/32" Rod

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

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Conair Franklin Desiccant Plastics Dryer D60A 460/3/60

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SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

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

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Branson Ultrasonic 910D Power Supply W/901AE Actuator

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AUTOHOPPER vacuum loader

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RF Welder Kabar 6-8KW RF Heat Sealer

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MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR

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RF Welder Thermatron 15 KW

$25500.00
Kamweld KS-1 Plastic Welding Tip 5/32" Rod

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Quick-LE Hot Air Welder Plastic Repair Kit

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POWERMATIC 3 HEAVY DUTY DRILL PRESS

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Portable Chiller - 23 Ton

$6979.00
BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

$1299.99
Forsthoff Quick LE Heat Welding Hot Air Leister Gun New

$369.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp

$5650.00
DEMTECH PRO-X EXTRUDER EXTRUSION WELDER PLASTIC WELDING

$800.00
Kamweld Plastic Tacking Tip

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Pillar Industries CYCLE DYNE RF Generators Model #AA-10

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RF Welder Cosmos 10-15KW with Rotarty Indexer

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6 VALVE WATER MANIFOLD SYSTEM

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Kamweld Hot Air Plastic Welder System with Welding Tips

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Foremost AHD-6 15 HP 14x18 Plastic Granulator Grinder

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Thermatron RF Welder Heat Sealer 30kw 6kw

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SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

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

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CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING

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LEISTER HEAT GUN WELDER ROOFING 2260 WATT 20.5 A NR!

$9.99
Kamweld KS-1 OLD Plastic Welding Tip 5/32" Rod

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Chicago electric welding system with built-in air motor

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DUKANE ULTRASONIC WELDER 94990 3A255 62416 (NO RESERVE!

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McElroy Socket Fusion PE Gas Pipe heater plates Chamfer

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5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$750.00
Branson Aluminium Ultrasonic blue booster

$40.00
HDPE Slipline Pipe Puller Butt Fusion NoReserve McElroy

$100.00
Kamweld KST-1A Plastic Welding Tip 1/8" Triangle Rod

$9.99
46MM BUSS KNEADER EXTRUDER

$8000.00
MCELROY #217201 PIPE FUSION MACHINE *gr8cond* NR

$495.00
13 Nelmor 8X10 Plastic Granulator Chipper Knives /Blade

$500.00
Foremost HD-6 10 HP 14x18 Plastic Granulator Grinder

$3800.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

$200.00
Thermal Care Air Cooled Chiller

$3000.00
LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING

$220.00
TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 150 /75/75

$4500.00
WHITLOCK MATERIAL DRYER WITH DRYER CYLINDER

$300.00
Forsthoff Quick-L Electronic Hot Air Blower - 1600 Watt

$7.50
McElroy #2 CU PE Fusion Machine

$950.00
Dryer for Plastic Injection Molding (double unit)

$998.75
RF Welder A & G 10KW RF Heat Sealer

$12500.00
Van Dorn 300ton Injection Molding Machine

$1500.00
Primus-Sievert PS 2001 heat-welding gun

$199.99
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder

$1500.00
ALPS SX-3 Leak Detector inline 3 Stations 60-80BPM

$4500.00
Audion PAC HORIZONTAL MEDICAL BAND HEAT SEALERS 552F

$1999.99
Novatec 30 lb Capacity Hopper AF-1, 6154 WH

$30.00
TUC Thermolator

$300.00
MINIATURE FOOT SWITCH 6 FOOT CABLE 15A NO/NC OUTPUT NEW

$24.99
Brand New Heavy Duty Industrial Granulator

$1195.00
COOLING FANS 12V VOLT DC 120 MM X 38 MM NEW LOT OF 2

$49.99
Novatec Color Feeder with Hopper AF-1, 6153 WH

$199.00
Novatec 30 lb Capacity Hopper AF-1, 6156 WH

$25.00
5 HP Plastic Injection Mold Scrap GRINDER Granulator

$399.00
Thermalators

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Branson Ultrasonic Welder Power 900D

$202.50
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
Branson 8400 - 900 Watt Plastic Ultrasonic Welder !!

$3250.00
Branson Aluminium green ultrasonic booster

$40.00
COOLING FAN 110V VOLT AC 208 MM X 72 MM A20872V1HBL NEW

$79.99
Branson 922RA ultrasonic converter

$400.00
ROTRON,VACUUM/BLOWER

$327.00
3.250" COMPOUND/PELLETIZING EXTRUSION LINE

$28500.00
MCELROY 424308 #14 PIPE PE FUSION HEATER IRON 1200W NR

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ADJUSTABLE SPOT COOLER BY EXAIR

$22.50
AEC WATER TEMPERATURE CONTROLLER TCU-100 (1 HP)

$350.00
VINTAGE / ANTIQUE PAPER CUTTER - DIAMOND / CHALLENGE

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Una-Dyn Process Equipment Air Assembly

$36.00
Daikin chiller PCB AKZ306 DHA00794F

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

$1295.00
AIR COMPRESSOR--MEDIUM SIZE 2HP

$150.00
McElroy 2" Master Insert Set Pipe Fusion Poly 14 NEW!!!

$174.00
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic

$1850.00
BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

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NOVATEC MDM-15S Micro Dryer 60 lb Hopper MCD-2000

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New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

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ConAir TrueBlend 3 Station Mixer & Hopper, + Controls

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GORTON CIRCULAR TABLE MODEL #215-1

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Branson ultrasonic converter/booster

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HEAVY DUTY STEEL TABLE 6'X3'X2' TALL

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IMS MEDIUM DUTY SCRAP GRINDER

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