Polymer Processing Equipment

Advanced Extrusion & Pelletizing Systems

Configurable twin-screw, single-screw and two-stage lines for compounding, masterbatch, cable compounds, recycling and engineered polymers.

Compounding & Masterbatch

Precision Compounding, Consistent Pellets

Co-rotating twin-screw platforms for colour, flame-retardant and functional masterbatch, plus filled and fiber-reinforced compounds.

Recycling & WPC

Turn Material Into Value

Film reclamation, PET washing and wood-plastic composite lines engineered around your feedstock and target output.

Configured to your process

Screw geometry, feeding points, venting, filtration, pelletizing and controls are matched to your formulation and pellet specification.

Full equipment families

Co-rotating twin-screw, high-torque, two-stage and single-screw platforms for compounding, cable compounds, WPC and recycling.

Multiple pelletizing methods

Water-cooled strand, air-cooled strand, air-cooled hot-face and water-ring pelletizing selected around the material and output.

Equipment families

A complete range of extrusion platforms and supporting systems. Explore each family, or browse the full catalogue.

SJSH Co-Rotating Twin-Screw Extruders

Modular intermeshing twin-screw platform for compounding, masterbatch and reactive extrusion. Screw diameters 22–133 mm.

DY High-Torque Twin-Screw Extruders

High-torque, high-output co-rotating platform for demanding compounds and higher throughput. Motor power up to catalogue-listed ratings.

SHJ Two-Stage Extrusion Lines

Twin-screw first stage with single-screw discharge for heat-sensitive and highly filled compounds requiring gentle, low-temperature pelletizing.

SJ Single-Screw Extruders

Single-screw extrusion and pelletizing stages for film reclamation and second-stage low-shear discharge. Screw diameters 100–200 mm.

Feeding & Auxiliary Equipment

Volumetric and loss-in-weight feeders, side feeders, force feeders, screen changers, vacuum venting and downstream cooling.

Pelletizing & Control Systems

Strand, hot-face and water-ring pelletizing with standard-panel, simulated-panel or PLC control and full process interlocks.

Engineering capability

System configuration begins with the material, formulation and pellet specification. Every process section can then be matched to the intended result.

Modular screw & barrel

Building-block screw elements and barrel sections for conveying, melting, mixing, dispersing and pressure build-up.

Feeding & loss-in-weight

Volumetric and loss-in-weight feeders, side and force feeders for accurate multi-component dosing.

Venting & devolatilization

Atmospheric and vacuum venting sections to remove moisture, monomer and volatiles from the melt.

Pelletizing options

Strand, air-cooled strand, air-cooled hot-face and water-ring pelletizing to suit the polymer and pellet shape.

Control & interlocks

Standard-panel, simulated-panel or PLC control with lubrication, feeding, pressure and over-current interlocks.

Configurable line design

Complete lines built from upstream feeding, extrusion, pelletizing and downstream classifying and packaging.

Featured production lines

Compounding & strand pelletizing

Twin-screw compounding with water-cooled strand pelletizing for filled, reinforced and blended compounds.

Water-ring hot-face pelletizing

Hot-face cutting with water-ring cooling for filled systems and polymer blends producing uniform pellets.

Two-stage heat-sensitive line

Twin-screw plus single-screw discharge for heat-sensitive and highly filled compounds needing low-temperature pelletizing.

XLPE cable-compound line

Tandem extrusion for XLPE and silane-crosslinkable cable compounds and low-smoke halogen-free formulations.

WPC compound line

One-step and tandem wood-plastic composite lines for high wood-flour or natural-fiber loadings.

Film-reclamation pelletizing

Single-screw reclamation and pelletizing of plastic film and post-industrial scrap into reusable pellets.

From material analysis to commissioning

1. Material analysis

Formulation, filler loading and target pellet reviewed.

2. System configuration

Screw, feeding, venting and pelletizing matched to process.

3. Manufacturing

Machining and assembly of the configured line.

4. Testing

In-house running and inspection before shipment.

5. Delivery

Packing and export shipment of the equipment.

6. Commissioning

Installation guidance, commissioning and operator support.

Discuss your material and required output with our engineering team

ABOUT DONGYUE MACHINERY

An engineering partner for polymer processing

Shijiazhuang Dongyue Machinery Co., Ltd. designs and manufactures extrusion, compounding and pelletizing systems for compounders, masterbatch producers, cable-material makers and recyclers. We start with your material and required output, then configure the machine and complete line around it.

Our mission

To help polymer processors achieve consistent, high-quality output by engineering extrusion and pelletizing systems around each customer's material, formulation and production target.

Our vision

To be a trusted long-term equipment partner for polymer processors worldwide — known for process-led engineering, dependable machines and responsive technical support.

What we stand for

Process-led engineering

Every configuration starts from the material and the pellet you need to produce — not a fixed template.

Reliability in production

Robust drives, wear-resistant components and process interlocks so lines keep running in real production.

Honest specifications

Catalogue values are presented as indicative and confirmed for your formulation — no inflated claims.

Partnership & support

Consultation, configuration, commissioning guidance and spare parts across the life of your equipment.

Why processors choose Dongyue

Configured to your material

Screw, feeding, venting, pelletizing and control matched to your polymer and output.

Complete-line responsibility

From upstream feeding through extrusion, pelletizing and downstream handling as one system.

Engineering support

Material and process consultation before the sale, and commissioning and service after it.

Built for export

Control cabinets built to your local voltage and frequency, packed for international shipment.

Quality & assurance

How we build confidence into every machine before it ships.

In-house running & inspection

Machines are assembled, run and inspected before shipment; full lines can be trial-run on request.

Wear-resistant materials

Tool-steel screw elements and carbide-lined barrel options for abrasive filled and reinforced compounds.

Process interlocks

Lubrication, feeding, melt-pressure and over-current interlocks protect both the machine and the product.

Documented & supported

Documented build with screw elements, wear parts and control components supported for maintenance.

Third-party certifications are provided on request where documentary evidence exists. Please ask our team for the current status relevant to your market.

Frequently asked questions

Selection starts with your polymer, filler or additive loading, target throughput in kg/h and the pellet specification. From there we match screw diameter, L/D ratio, screw configuration, feeding, venting and pelletizing method. Sharing a material data sheet or sample lets us recommend a suitable configuration.

Throughput is formulation-dependent. Across the twin-screw range, catalogue reference outputs span from laboratory scale up to several tonnes per hour on the largest platforms. Final figures are confirmed for your specific formulation during configuration.

Water-cooled strand pelletizing suits many reinforced and filled compounds; air-cooled strand or chain pelletizing suits heat-sensitive or lightly filled materials; air-cooled hot-face and water-ring hot-face pelletizing suit filled systems, blends and higher outputs. We recommend a method based on your material and pellet requirements.

Yes. Control options range from a standard operator panel to a simulated panel or PLC control, with lubrication, feeding, pressure and over-current interlocks. Voltage and frequency are built to your local supply — please provide these when requesting a quote.

We provide pre-sales material and process consultation, configuration, installation guidance, commissioning and operator training, plus spare parts and maintenance support. The exact scope is confirmed in your project proposal.

The polymer and formulation, additive or filler percentage, required output in kg/h, preferred pelletizing method, final product or application, and your voltage and frequency. You can submit all of this, along with technical files, on our Request a Quote page.

Ready to configure your line?

Request a quotation, arrange an engineering consultation, or ask for the equipment catalogue.

Lines we build

Complete compounding and pelletizing lines, configured around the compound rather than a catalogue default — from a 22 mm laboratory machine to a 133 mm line running several tonnes an hour.

SJSH twin-screw extrusion line with water trough, air knife and strand pelletizer
Twin-screw compounding with water-cooled strand pelletizing.
SJSH twin-screw extruder with air-cooled hot-face pelletizer and control cabinet
Air-cooled hot-face pelletizing for masterbatch.
SJSH twin-screw extruder with water-ring die-face pelletizer
Water-ring hot-face cutting for filled systems.
SHJ two-stage compounding machine with twin-screw and single-screw extruders
SHJ two-stage lines for heat-sensitive compounds.

See all line configurations →

Supplying compounders in China and worldwide

Our equipment is sold throughout China and exported to compounders, masterbatch producers and cable-material makers across Asia, Europe and Australia. We handle the whole chain in-house — design, production, sales and after-sales service — so the same team that configures your screw geometry is the one that commissions the line and supplies its spare parts.

ChinaKoreaTurkeyThailandIranSingaporeAustraliaGermany

Machines are packed for international shipment, and voltage and frequency are built to your local supply.