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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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CONAIR CD-30 DRYER - AFTER COOLER - FOR HIGH HEAT DRYER

$30.00
AUTOHOPPER vacuum loader

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1-1/2"HOPPER FEED AUGER SCREW/EXTRUDER/MIXER FUEL/STOVE

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Mcelroy No 14 Pitbull Pipe Fusion Welding System VGC

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UNA-DYN UDC-55 Dryer with 200 lb Drying Hopper Unidyn

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Branson 922RA ultrasonic converter

$500.00
NEW McElroy No.14 Pipe Fusion Machine Welder HDPE PE

$2799.00
3 HP Foremost HD-1 Plastic Granulator Shredder

$800.00
McElroy No.2CU Pipe Fusion Welder Machine Tool Plastic

$800.00
Used Prodex Extruder-10 Hp Variable Speed Belt Drive

$2499.00
StopCock Two Way Shut Off Valve Valves with Hose Barbs

$17.00
LARGE WHITLOCK DESICCANT DRYER AND HOPPER

$990.00
Thermolator Used Plastic Injection Mold Heater

$80.00
Branson J931 cable

$40.00
DRYING HOPPER -- INSULATED-- EST. 300# - GOOD CONDITION

$49.00
Mecasonic Ultrasonic Rotation Welder Omega II

$2500.00
Dukane 410 ultrasonic welder and accessories

$950.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
URETHANE SUPPLY 5600HT MINI-WELD AIRLESS PLASTIC WELDER

$83.00
NEW McElroy No.28 Pipe Fusion Machine Welder HDPE PE

$12900.00
VERY NICE CONAIR COMPU-DRY DRYER W/ NOVATECH NPH-HOPPER

$2990.00
Dryer for Plastic Injection Molding (single unit)

$825.00
Sterlco Temperature Control Unit Package Plastics TCU

$1200.00
5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$850.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

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DUKANE ULTRASONIC WELDER 4035 CONTROLLER DPCII

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Airless Plastic Welder by Urethane Supply USC 5600HT

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HERRMAN ULTRASONIC DIALOG WELDER 2012 WITH CONTROL

$249.00
BRY-AIR NOVATECH DRYING HOPPER W/ VACUUM LOADER H-4-I-S

$990.00
ConAir DuraLoad Dual Blender & Hopper, Universal Cntrls

$3000.00
Nelmor grinder 20 HP motor 3 blade rotor

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PLASTIC PROCESS EQUIPMENT P161 DRYER

$1000.00
Central ELECTROFUSION Multi Clamp Pipe Fusion McElroy

$200.00
Pick and Place Robot, Ranger Automation

$9500.00
Dryer for Plastic Injection Molding (Quad-Unit)

$1650.00
Control King Hot Runner Control Card Model 2010 20 Amp

$25.00
Moeller Devicon Ultrasonic Welder - Sealer - Packaging

$7200.00
used Branson Mod. 8400 Ultrasonic Welder

$2750.00
Titanium 20 Khtz Ultrasonic welding horn Dukane anodize

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Dynisco Temperature Control 20 Station Hot Runner AIM15

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Granulator , Ball & Jewell , HAF68 , 3hp , plastics

$1650.00
Conair Thermolator Temptrack Plus, Heat Transfer Tempro

$1200.00
Titanium 20 Khtz Ultrasonic welding horn Dukane 1.5 OD

$39.99
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

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Conair Franklin 3 component blender plastics equipment

$2500.00
CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
AEC Chiller

$425.00
Kona Temperature Control 16 Station Hot Runner MF24

$1600.00
Willman/Nucon Vacuum Filters, Valves and Controls Incl.

$700.00
ADVANTAGE WATER MOLD TEMP CONTROLLER 48 KW * 460 VOLT

$250.00
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1995.00
Titanium 20 Khtz Ultrasonic welding 2.5 booster Dukane

$150.00
Dukane Transducer

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

$5650.00
Christie / Connectra Miter Insert Sets Pipe Fusion HDPE

$1500.00
NELMOR GRANULATOR INJECTION MOLDING 10 HP 12X10

$1700.00
Aluminium green ultrasonic booster

$40.00
Nelmor Granulators

$129.00
Central ELECTROFUSION Clamps Pipe Fusion 1/2" + 1" CTS

$50.00
20 Khtz Ultrasonic welding transducer Dukane

$49.99
Dupont ELECTROFUSION Clamp 2" Pipe Fusion PE HDPE NR!

$25.00
Dryer for Plastic Injection Molding (Quad-Unit)

$1650.00
Herrmann PS Ultrasonic Welder w/Modules, Booster & Horn

$1200.00
PETS P.E.T.S Hot Runner Temperature Controller 851-4

$25.00
Pick and Place Robot, Ranger Automation, Linear Robot

$9500.00
250 lbs Portable Material Mixers (10 available)

$500.00
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
ConAir TrueBlend Mixing Hoppers, W/ Gravimetric Readout

$3500.00
ConAir TrueBlend 3 Position Mixer & Hopper, Controls

$5600.00
American MSI APEX-12 12 Zone Hot Runner Controller

$1250.00
Pick and Place Robot Engel ERC 83/1-C Servo Linear 2002

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New Novatec polymer MPC-50 dryer, insulated hopper

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Color Touch Screen Man Machine Interface MMI Dukane

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20 HP Granulator W/ Gaylord Boxing Enclosures, 11"x18"

$2800.00
LOT OF 2 CONAIR CH16-4 Hopper Vacuum Loader

$999.99
Pick and Place Robot, Ranger Automation, Linear Robot

$9500.00
9 Zone Digital Control King Hot Runner Controller 20a

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Dryer for Plastic Injection Molding (double unit)

$1175.00
TAKE OFF BOX FOR MATERIAL HOPPER, ETC.

$30.00
2007 UNA-DYN 200 CFM DEHUMIDIFYING GAS HOPPER DRYER

$12000.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
Branson 902J ultrasonic converter

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3 ROLL STACK

$4000.00
Lot of 10 Chrome Plated Brass 1/8 NPT Mini Ball Valves

$15.00
4" STEEL CASTERS FOR EXTRUSION DOWNSTREAM EQUIPMENT

$30.00
VERY NICE BRY-AIR SYSTEMS DESICCANT DRYER MODEL RM-200

$2990.00
Aluminium Ultrasonic blue booster

$40.00
RANGER SPR-70 REMOVAL ROBOT MODEL SPR-70

$51.00
NOVATEC MPC-500 Dryer with 2000 lb Insulated Hopper

$3200.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
Branson Ultrasonic Welder Series 900 MDL 901AES

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Conair DL 25 Dryer/Hopper

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Thermoplastic Hopper Loader Mann+Hummel

$40.00
Sterlco M2B temperature control station

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BRANSON Dual 920M SONIC WELDER PRESS with Allen Bradley

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PICK AND PLACE ASSEMBLY ROBOT FANUC, MELSEC, MITSUBISHI

$2999.00
Dukane Ultrasonic Welder Multiplexor

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Nelmor Granulators

$199.00
(2) Branson Display Key Board for Ultrasonic Welder NEW

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Plastics Granulator, Grinder

$300.00