Plastic Machinery Data
Information Home Pages on Recycled Plastic Lumber">

Plastic Machinery Data
Information Home Pages on Recycled Plastic Lumber">

Plastic Machinery Data
Information Home Pages on Recycled Plastic Lumber">

Plastic Machinery Data
Information Home Pages on Recycled Plastic Lumber, Plastic Lumber Machinery, Plastic Composite Machinery, Recycling  Equipment, Plastic Wood Extrusion,  Flow molding, How to Select Plastic Lumber Equipment, Choosing Used Plastic  Equipment,  Plastic Machinery Comparisons, Comparing Twin Screw Extruders and Single Screw Extruders and many other topics of interest in the Plastic Lumber Field.


Plastic Machinery Data Homepage
Recycled Plastic Lumber
How to Select Plastic Lumber Equipment
How To Make Plastic Wood
Choosing Used Plastic  Equipment
Plastic Wood Equipment
Plastic Machinery Comparisons
Recycling Plastic Data
Best Buys on Plastic Machinery
Plastic Extruders
How to Pick the Right Plastic Shredders
Plastic Consultants and Machinery Consultants
Comparing Twin Screw Extruders and Single Screw Extruders
Recycled Composite
Plastic Lumber
Plastic Wood
Plastic Profile Machines
Injection Molders
New Technology For Plastic Lumber

Good used extruders for sale:

CINCINNATI MILACRON MODEL CM65, 65 MM, Conical counter rotating twin screw extruder. MFG. 1999 used less than one year, New Barrel  Unused set of extra screws, moly coated 50 HP DC drive and motor 11 Zone Control Panel,
Click here to go to the recommended retailer of used plastic machinery.

AMERICAN MAPLAN 100 MM Twin Screw   MFG 1989
22:1 L/D ratio New Barrel/Screw 4-99 Dorstener Gearbox Compak SCR Controls Sterlco Temp Controls Electrically Heated Water Cooled Starve Feeder AT Plus Instruments
Click here to go to the recommended retailer of used plastic machinery.

CINCINNATI MILACRON MODEL CM 111   111 MM Twin Screw 198 Conical Twin Screw Extruder, Motor & Drive, Starve feeder, Rebuilt Vacuum Pump, Complete Control Panel with Digital controls. Cleaned, painted and checked out.
Click here to go to the recommended retailer of used plastic machinery.

EXTRUDER MPM   32:1 6" Standard Single Screw  
Gearbox Ratio is 20.9:1--Electric Heat, Air cooled--Vented--Fincor Digital 150 HP DC Drive--Control Panel --Three Screws and a Swing Clamp--Priced to sell
Click here to go to the recommended retailer of used plastic machinery.

EAGAN SINGLE SCREW   24 3.5" Standard Single Screw 1974 **Refurbished** Electrically Heated, Air Cooled, 5 Brand New Fans (Oct. 2002) Non-Vented Direct Drive DC Motor NEW Eurotherm 590 DRV DC Drive - (Jan. 2002) 5 Barrel Zones, 2 Die Zones Barber Colman 7SH491103000 Temperature Controller ( Feb. 2002) **Price Reduced
Click here to go to the recommended retailer of used plastic machinery.

       
  Plastic extruders

The  Plastic extrusion process  melts plastic granules and transform them various products.
Plastic polymers are fed into the extruder barrel and processed on a single or a double screw extruder that is heated up to 400F (the temperature can change in function of the extruder type). The extruder transports melts and mixes the granules at the same time. At the end of the first stage, the melted mass will be pushed into the die which shapes the molten plastic into  the desired shape.

After this the molten plastic  is pulled through a calibration system, which cools the part  under vacuum by a  belted puller. the finished product is then cut to the desired length. Plastic extruders are but one components of a complete system which is composed of several pieces  of equipment and designed to make a particular end product.

 
                   Click here to go to the recommended retailer of used plastic machinery.
Plastic Extruder
 
 



Sheet  Extrusion Lines are used  mostly for flat sheet and a complete   Plastic extruder sheet system is comprised of an extruder,  polish stand , pull rolls and   winder or stacker.
The polish roll stand features  three hard surface polishing rolls with chrome plating, designed for  heat transfer.  Each roll is equipped with an individual, water temperature control system.


Plastic sheet line   

Shape Profile  Extrusion Lines are used to produce products from medical tubing to complex structural sections. The plastic is fed through charging hopper into the extruder system where it is  melted and  mixed and is then extruded by the screw into die forming head. Profile formed in the head is passed onto vacuum calibrators installed on calibrating table. Here the profile acquires the required dimensions and is cooled with water to a temperature enabling it to be hauled off by the two belt puller  with variable speed. Profiles are cut to required lengths by a cross cut saw and received by profile stacker. 

 


 

Profile extrusion line

Foam Extrusion Lines consist of  tandem and single extruder systems for direct injection foam processing. They require a  compliment of down stream equipment including; air rings, sizing mandrels, pull rolls , and winders.
 

Compounding and Recycling Lines This type od extrusionline is used to convert plastic chips or powder into plastic pellets . A line consists of  a system for feeding, filtering, pelletizing and drying.

.

Refurbished  Lines: Cierra Industries of Auburn offers a service of refurbishing used equipment. This allows the ability to offer a combination of new and used equipment, resulting in cost savings while maintaining high quality .
                


Before Rebuilding


After rebuilding

 

Plastic Extruders


Definition: A Plastic Extruder is machine for producing more or less continuous lengths of plastic sections. Its essential elements are a tubular barrel, usually electrically heated; a revolving screw, ram or plunger within the barrel; a hopper at one end from which the material to be extruded is fed to the screw, ram or plunger; and a die at the opposite end for shaping the extruded mass.


Plastic Extruders may be divided into three general types

SINGLE SCREW
Plastic Extruders
Pressure distribution predicted for a single-screw Plastic Extruder.




The family of single-screw Plastic Extruders includes units with various diameter  an a single screw. These extruders are designed for the manufacture of pipes, profiles, films and other goods from thermoplastics. They offer different gear rations, engine powers and torques and several speeds, which enables an optional selection of an extruder, suited to a particular application and plastic. A single screw Plastic Extruder is typically more severe in its handling of plastics and may result in more degradation than a twin screw machine

Plastic Extruder for Pipe extrusion
For high performance extrusion of pipes for gas, water, multilayer pipes, draining pipes from such materials as HDPE, MDPE, LDPE, PP are recommended high torque machines with grooved cylinders with relative length ratio L/D=30:1, equipped with high power motors.Extruders with smooth cylinders are used for the processing of engineering polymers such as ABS, PYDE PPO and for production of hoses from plastified PCV; they are also applied when raw material properties are variable (e.g. regrind) or production flexibility is of great importance. 
Plastic Extruder for Profile extrusion

Normally for profile extrusion are used extruders with a relative length ratio L/D=25:1 with a smooth feeding area. Depending on the manufactured profile, extruders may have different screw rotational speeds and motor powers (torques) from those presented in the table.
Plastic Extruder for Film extrusion,
An optimal solution seems to be application of extruders with garooved feeding zones with relative length ratio L/D=30:1, fitted, especially in case of recycling, with plasticizing units with degassing system (vented extruders) 


Twin-or Multiple Screw Plastic Extruder
 


Twin-screw co-rotating Plastic Extruder
co-rotating twin-screw line offers the highest torque-per-free-volume and the highest screw speed of any commercial available compounding extruder.  They are available in sizes ranging from 37 to 175 millimeters.
Twin-screw counter-rotating Plastic Extruder
The counter-rotating, non-intermeshing system enhances feed acceptance, provides superior distributive mixing, enables multistage feeding, and produces optimum venting.
Kneader Plastic Extruder
For applications like carbon paste manufacture where low shear, kneading action and high capacity are primary considerations, kneader mixers  have  high throughput rates  And the material produced is a dense, uniform paste with little particle degradation.

These machines posess segmented screws and barrel liners. Hydraulically operated clam-shell barrel feature provides easy access for clean-out or reconfiguration.  A single manifold provides heating fluid circulation for the segmented barrel jackets up to 300 C

Pressure distribution predicted for a twin-screw Plastic Extruder . The arrow denotes the extrusion direction.

If you have further questions please address them to pvan123@aol.com. Questions concerning equipment for plastic recycling equipment or plastic lumber will be answered as soon as possible.

       

If you have further questions please address them to pvan123@aol.com. Questions concerning
equipment for plastic recycling equipment or plastic lumber will be answered as soon as possible.

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