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

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LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING

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Branson Aluminium green ultrasonic booster

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McElroy #2 CU PE Fusion Machine

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LEISTER CH-6060 HOT HEAT GUN PLASTIC WELDER ROOFING

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BRANSON ULTRASONIC PLASTIC WELDER MODEL 8400

$499.95
Branson Ultrasonic 947DA With 941AES Actuator Welder

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Portable Chiller - 23 Ton

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MCELROY PITBULL #14 PIPE FUSION MACHINE *worksgr8* NR

$995.00
Kamweld KS-1 OLD Plastic Welding Tip 5/32" Rod

$9.99
AEC WATER TEMPERATURE CONTROLLER TCU-100 (1 HP)

$350.00
LEISTER GHIBLI PLASTIC WELDER HEAT GUN with 200+ rods

$200.00
6 VALVE WATER MANIFOLD SYSTEM

$1.00
Dri-Pac Desiccant Dryer & 150lb Una-Dyn Hopper Plastic

$1199.00
ALPS SX-3 Leak Detector inline 3 Stations 60-80BPM

$4500.00
Branson Aluminium Ultrasonic blue booster

$40.00
ROTRON,VACUUM/BLOWER

$327.00
HDPE Slipline Pipe Puller Butt Fusion NoReserve McElroy

$100.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
KAMWELD (?) PLASTIC WELDING THERMOPLASTIC WELDER TORCH

$33.00
POWERMATIC 3 HEAVY DUTY DRILL PRESS

$500.00
GORTON CIRCULAR TABLE MODEL #215-1

$100.00
Thermal Care Air Cooled Chiller

$3000.00
Novatec 30 lb Capacity Hopper AF-1, 6156 WH

$25.00
LEISTER HEAT GUN WELDER ROOFING 2260 WATT 20.5 A NR!

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Foremost HD-6 10 HP 14x18 Plastic Granulator Grinder

$3800.00
DEMTECH PRO-X EXTRUDER EXTRUSION WELDER PLASTIC WELDING

$800.00
TOSHIBA INJECTION MOLDING MACHINE HY MOTOR 150 /75/75

$4500.00
RF Welder Kabar 6-8KW RF Heat Sealer

$12000.00
Audion PAC HORIZONTAL MEDICAL BAND HEAT SEALERS 552F

$1999.99
Van Dorn 300ton Injection Molding Machine

$1500.00
RF Welder A & G 10KW RF Heat Sealer

$12500.00
30HP NELMOR PLASTIC GRANULATOR MODEL 1620 YEAR 1999

$7900.00
NOVATEC MDM-15S Micro Dryer 60 lb Hopper MCD-2000

$950.00
Branson ultrasonic converter/booster

$250.00
Conair Franklin Desiccant Plastics Dryer D60A 460/3/60

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Branson 8400 - 900 Watt Plastic Ultrasonic Welder !!

$3250.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

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CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
COOLING FAN 110V VOLT AC 208 MM X 72 MM A20872V1HBL NEW

$79.99
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1295.00
WHITLOCK MATERIAL DRYER WITH DRYER CYLINDER

$300.00
IMS MEDIUM DUTY SCRAP GRINDER

$100.00
Novatec Color Feeder with Hopper AF-1, 6153 WH

$199.00
DUKANE ULTRASONIC WELDER 92390 43B18 Plastic Bonder

$1500.00
Plastic Extrusion Welder Munsch SK-SC - Low Hours -

$2495.00
TUC Thermolator

$300.00
Pillar Industries CYCLE DYNE RF Generators Model #AA-10

$1199.00
RF Welder Thermatron 15 KW

$25500.00
BRANSON ULTRASONIC 941 AES WELDER & 947MA CONTROLLER

$1299.99
RF Welder Cosmos 10-15KW with Rotarty Indexer

$23500.00
ADJUSTABLE SPOT COOLER BY EXAIR

$22.50
MATSUI DRYER M/N: DMZ-240 & S/S INSULATED HOPPER

$3995.00
Dryer for Plastic Injection Molding (double unit)

$998.75
Thermalators

$300.00
AIR COMPRESSOR--MEDIUM SIZE 2HP

$150.00
McElroy Socket Fusion PE Gas Pipe heater plates Chamfer

$59.22
Kamweld Plastic Tacking Tip

$10.50
Quick-LE Hot Air Welder Plastic Repair Kit

$81.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
Thermatron RF Welder Heat Sealer 30kw 6kw

$131000.00
ConAir TrueBlend 3 Station Mixer & Hopper, + Controls

$4200.00
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
5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$750.00
Foremost AHD-6 15 HP 14x18 Plastic Granulator Grinder

$6900.00
Kamweld KS-1 OLD Plastic Welding Tip 5/32" Rod

$9.99
McElroy 2" Master Insert Set Pipe Fusion Poly 14 NEW!!!

$174.00
3.250" COMPOUND/PELLETIZING EXTRUSION LINE

$28500.00
AUTOHOPPER vacuum loader

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Primus-Sievert PS 2001 heat-welding gun

$199.99
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

$9.99
DUKANE ULTRASONIC WELDER 94990 3A255 62416 (NO RESERVE!

$499.95
Branson Ultrasonic Welder Power 900D

$150.00
HFA UNDER PRESS PARTS DIVERTER 14" X 14" OPENING

$50.00
KAMWELD 43-HS PLASTIC WELDING THERMOPLASTIC WELDER

$32.50
McElroy No.14 Pipe Fusion Welder Machine Tool Plastic

$1850.00
5 HP Plastic Injection Mold Scrap GRINDER Granulator

$399.00
VINTAGE / ANTIQUE PAPER CUTTER - DIAMOND / CHALLENGE

$500.00
Kamweld Hot Air Plastic Welder System with Welding Tips

$31.00
MCELROY 424308 #14 PIPE PE FUSION HEATER IRON 1200W NR

$221.99
HEAVY DUTY STEEL TABLE 6'X3'X2' TALL

$200.00
COOLING FANS 12V VOLT DC 120 MM X 38 MM NEW LOT OF 2

$49.99
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Brand New Heavy Duty Industrial Granulator

$1195.00
13 Nelmor 8X10 Plastic Granulator Chipper Knives /Blade

$500.00
Branson Ultrasonic 910D Power Supply W/901AE Actuator

$1500.00
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
Novatec 30 lb Capacity Hopper AF-1, 6154 WH

$30.00
Kamweld KS-1 Plastic Welding Tip 5/32" Rod

$10.50
Conair 9Kw Mold Temperature Control Unit

$400.00
Forsthoff Quick-L Electronic Hot Air Blower - 1600 Watt

$5.00
MINIATURE FOOT SWITCH 6 FOOT CABLE 15A NO/NC OUTPUT NEW

$24.99
MCELROY #217201 PIPE FUSION MACHINE *gr8cond* NR

$495.00
Una-Dyn Process Equipment Air Assembly

$36.00
Branson 922RA ultrasonic converter

$400.00
Chicago electric welding system with built-in air motor

$24.99
46MM BUSS KNEADER EXTRUDER

$8000.00