Used Welex 3.5" 30:1 L/D Extruder. Electrically heated water cooled (closed loop) and vented barrel at an approximate 69" center line height. Center line height can be reduced approximately 8" by removing an additional base. Lufkin change gear gearbox is direct driven in a tuck under manner by a 150 HP Emerson DC motor with Control Technique Mentor II SCR control. Present reduction ratio is 13.89:1. Includes integral panel having fourteen (14) zones of temperature control. Dynisco model EH-35 screen changer with 3 HP hydraulic pack is mounted on the extruder discharge. Also includes 20 HP melt pump with controls.
Used Equipment Facts About This Machine
Manufacturer Information:
Manufacturer: Welex
Model: 3.5" 30:1 L/D Extruder
Condition: Used
Description:
The Welex 3.5" 30:1 L/D Extruder is a high-performance extrusion system, ideal for plastic processing, compounding, and recycling applications. Featuring an electrically heated, water-cooled (closed-loop) vented barrel, this extruder ensures efficient temperature management and consistent melt quality.
Mounted at an approximate 69" centerline height, this extruder's height can be reduced by 8 inches by removing the additional base, allowing for greater flexibility in plant integration.
The system is powered by a 150 HP Emerson DC motor, which is direct-driven in a tuck-under manner via a Lufkin change gear gearbox with a 13.89:1 reduction ratio. A Control Technique Mentor II SCR drive ensures precise speed and torque control for optimal performance.
For enhanced material processing, the unit includes a Dynisco EH-35 hydraulic screen changer with a 3 HP hydraulic pack, mounted on the extruder discharge, along with a 20 HP melt pump with integrated controls.
The integral control panel features fourteen (14) zones of temperature control, providing advanced process optimization for various extrusion applications.
Specifications:
Screw Diameter: 3.5 inches
L/D Ratio: 30:1
Barrel Features:
Electrically heated, water-cooled (closed-loop) system
Vented barrel for enhanced degassing
Centerline Height:
Approx. 69 inches
Can be reduced by 8 inches by removing base
Gearbox:
Lufkin change gear gearbox
Reduction Ratio: 13.89:1
Direct-driven, tuck-under configuration
Motor & Drive System:
150 HP Emerson DC Motor
Control Technique Mentor II SCR control
Screen Changer:
Dynisco EH-35 hydraulic screen changer
3 HP hydraulic pack
Melt Pump:
20 HP melt pump with integrated controls
Control Panel:
Fourteen (14) temperature control zones
Applications:
Plastics & Polymer Extrusion: Pelletizing, sheet extrusion, compounding
Recycling & Reprocessing: Scrap plastic extrusion and polymer recovery
Industrial Manufacturing: Pipe, tubing, profile, and sheet extrusion
Chemical & Specialty Material Processing: Thermoplastics and engineered polymers
Common Product Uses:
High-efficiency extrusion for plastics and polymer production
Temperature-controlled extrusion with closed-loop water cooling
Vented barrel design for improved degassing and impurity removal
Hydraulic screen changer for seamless filtration and material purity
Optimized extrusion process with 14 temperature control zones
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