USED WELEX 6.0 30D

Used Equipment Facts About This Machine
Manufacturer
Welex Incorporated is a respected manufacturer of industrial extrusion systems for the plastics processing industry. Welex extruders are widely used in sheet, profile, recycling, packaging, and polymer processing applications, delivering reliable performance, high throughput, and precise melt control for continuous manufacturing operations.

Description
The Used Welex 6" Single Screw Extruder, Model 6.0 30D, is a heavy-duty industrial extrusion system designed for demanding thermoplastic processing applications. Previously operated on PET resin, this extruder features a 30:1 L/D ratio and an air-cooled vented barrel, providing excellent melt quality, mixing efficiency, and devolatilization capability for moisture-sensitive polymers and recycled materials.
The barrel vent, located approximately 120 inches from the center of the feed throat, is currently plugged but may be configured for venting or vacuum devolatilization as required. The extrusion barrel incorporates six heating zones fitted with Tempco Cool Touch heater bands, while the downstream die system features nine additional heating zones for precise temperature management.
Power is supplied by a 500 HP Reliance AC motor, capable of operating the screw at speeds up to 200 RPM. Torque is transmitted through a direct-driven Koellmann gearbox featuring an 8.7:1 reduction ratio, providing dependable power delivery for high-output extrusion applications.
The machine includes a 10-inch × 8-inch feed throat, 68-inch centerline height, and a 6-inch Dynisco hydraulic screen changer complete with its hydraulic power unit, allowing continuous filtration and improved melt quality during production.
Note: This machine does not include an AC drive, allowing purchasers to integrate a drive package best suited to their application.

Specifications

Specification
Details

Manufacturer
Welex

Model
6.0 30D

Equipment Type
Single Screw Extruder

Screw Diameter
6 in.

L/D Ratio
30:1

Barrel Type
Air-Cooled, Vented

Vent Location
Approximately 120 in. from Feed Throat (Currently Plugged)

Barrel Heating Zones
Six (6)

Die Heating Zones
Nine (9)

Heater Bands
Tempco Cool Touch

Main Motor
500 HP Reliance AC Motor

Maximum Screw Speed
Up to 200 RPM

Gearbox
Koellmann Direct Drive

Gearbox Ratio
8.7:1

Feed Throat
Approximately 10 in. L × 8 in. W

Centerline Height
68 in.

Screen Changer
6 in. Dynisco Hydraulic Screen Changer

Hydraulic Power Unit
Included

AC Drive
Not Included

Electrical
460 Volt, 3 Phase, 60 Hz

Previous Material
PET Resin

Approximate Dimensions
330 in. L × 84 in. W × 102 in. H

Approximate Weight
37,000 lbs.

Condition
Used

Applications
This Welex extrusion system is ideal for:

PET sheet extrusion
Plastic sheet production
Polymer processing
Plastic recycling
Packaging sheet manufacturing
Thermoplastic extrusion
Engineering resin processing
Plastic compounding
Industrial extrusion
Continuous polymer manufacturing
Specialty plastic production
Custom extrusion applications

Common Materials Processed

PET
RPET
Polypropylene (PP)
Polyethylene (PE)
High-Density Polyethylene (HDPE)
Low-Density Polyethylene (LDPE)
Polystyrene (PS)
Engineering thermoplastics
Reprocessed plastics
Polymer compounds
Specialty resin blends
Thermoplastic formulations

Features & Benefits

Heavy-duty 6-inch single screw extruder
30:1 L/D ratio for excellent melt quality
Air-cooled vented barrel
Vented section for devolatilization capability
Six barrel heating zones
Nine die heating zones
Tempco Cool Touch heater bands
Powerful 500 HP Reliance AC motor
Direct-driven Koellmann gearbox
Maximum screw speed up to 200 RPM
6-inch Dynisco hydraulic screen changer
Hydraulic power unit included
Previously processed PET resin
Ideal for high-output sheet extrusion and polymer processing

Frequently Asked Questions
What materials can this extruder process?
The machine was previously used with PET resin and is suitable for processing PET, RPET, polyethylene, polypropylene, engineering thermoplastics, recycled plastics, and other compatible polymers depending on screw configuration and downstream equipment.
Does the barrel include a vent?
Yes. The barrel includes a vent located approximately 120 inches from the feed throat. It is currently plugged but can be configured for venting or vacuum devolatilization if required.
Is an AC drive included?
No. An AC drive is not included, allowing the purchaser to select and integrate a drive package appropriate for their production requirements.
What screen changer is installed?
The extruder includes a 6-inch Dynisco hydraulic screen changer complete with its hydraulic power unit, allowing continuous melt filtration and improved product quality.
What type of drive system powers the extruder?
The machine is equipped with a 500 HP Reliance AC motor coupled to a direct-driven Koellmann gearbox with an 8.7:1 reduction ratio, capable of screw speeds up to 200 RPM.
Can Aaron Equipment assist with shipping and logistics?
Yes. Aaron Equipment provides domestic and international shipping coordination, export documentation, heavy-haul transportation, freight management, and logistics support for extrusion equipment and complete plastics processing lines.
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