An extrusion machine is a type of industrial equipment that transforms raw materials—such as plastics, rubber, or metals—into continuous, uniform shapes by applying heat, pressure, and mechanical force. Through a process known as extrusion, materials are melted, mixed, and pushed through a die to form solid or hollow products like pellets, pipes, films, or profiles.
Among all extrusion technologies, plastic extrusion is the most widely used, forming the foundation of modern plastic recycling, compounding, and manufacturing.
At HONGQI Plastic Machinery, we specialize in plastic pelletizing extrusion machines, particularly Single-Screw and Twin-Screw models, both of which are essential for plastic processing industries worldwide. These machines serve as the backbone of recycling systems, polymer modification, and masterbatch production.
This article will introduce the main types of extrusion machines, explain how each works, and explore why HONGQI’s advanced designs deliver efficiency, precision, and long-lasting performance.
An extrusion machine operates on a simple principle:
Feed the raw plastic material (flakes, powder, or pellets) into a heated barrel.
Melt and mix the material using rotating screws under controlled temperature and pressure.
Push the molten plastic through a die to create a continuous shape.
Cool and cut the extrudate into final products like pellets or sheets.
This continuous process ensures uniformity, high output, and consistent material quality, which is why extrusion is widely adopted in industries ranging from packaging to automotive.
At HONGQI, all extrusion machines are built using CNC-machined barrels and screws, advanced temperature control systems, and energy-efficient drive motors, allowing them to achieve exceptional stability and low power consumption during production.
There are several types of extrusion machines depending on material and processing needs. In the field of plastic processing, the two dominant systems are Single-Screw and Twin-Screw Extruders, both of which play different yet complementary roles.
The Single-Screw Extruder is the most common and versatile type of extrusion machine. It uses one screw rotating inside a heated barrel to melt and transport materials.
How It Works:
The screw conveys the plastic from the feeding hopper through heating zones.
Gradual pressure and temperature increase cause melting and homogenization.
The molten plastic passes through a die, forming strands or pellets.
Cooling and cutting systems finalize the product.
Applications:
Plastic recycling and re-pelletizing
Film, sheet, and pipe extrusion
Basic compounding and mixing tasks
Advantages of HONGQI Single-Screw Extruders:
| Feature | Benefit |
|---|---|
| High Output Stability | Smooth pressure ensures uniform pellet size |
| Energy Efficient | Optimized screw geometry reduces power usage |
| Easy Maintenance | Simplified structure allows quick cleaning |
| Cost-Effective | Ideal for medium-scale production and recycling |
HONGQI’s Single-Screw Plastic Pelletizing Extrusion Machine is designed with automatic temperature control, stainless steel feed hoppers, and hardened alloy screws, ensuring durability and reliability even in demanding operations.
The Twin-Screw Extruder features two intermeshing screws that rotate either in the same or opposite directions. It is designed for applications that require intensive mixing, blending, or chemical modification of plastics.
How It Works:
Two screws rotate inside the barrel, generating a shearing effect that thoroughly mixes materials.
Additives, fillers, and colorants are evenly distributed throughout the polymer.
The compound is extruded through a die and cut into uniform granules.
Applications:
Engineering plastic modification
Masterbatch and color compounding
Biodegradable and specialty polymer processing
High-performance resin blending
Advantages of HONGQI Twin-Screw Extruders:
| Feature | Description |
|---|---|
| Superior Mixing | Dual screw design provides thorough blending and dispersion |
| High Versatility | Suitable for multiple polymer types and additives |
| Stable Pressure Output | Maintains uniform melt flow and pellet consistency |
| Automation Ready | PLC touch-screen control for temperature and speed adjustment |
Our HONGQI Twin-Screw Plastic Pelletizing Extrusion Machine uses co-rotating intermeshing screws and modular barrel design, offering flexibility for different materials. This system ensures maximum homogenization and consistent pellet quality—key for advanced polymer processing.
While single-screw and twin-screw extruders dominate the market, other specialized types exist for niche applications:
| Type | Key Function | Common Use |
|---|---|---|
| Co-Extrusion Machine | Combines two or more materials into a single layer structure | Multi-layer film or pipe production |
| Sheet/Film Extruder | Produces continuous sheets and films | Packaging, printing, thermoforming |
| Recycling Extruder with Cutter Compactor | Integrates shredding and melting | Post-industrial and post-consumer recycling |
| Lab Extruder | Small-scale version for testing and research | Polymer development and formulation |
At HONGQI, we integrate these principles into our industrial systems, combining durable mechanical design with intelligent automation for both large-scale and customized extrusion lines.
Every extrusion machine may look similar in structure, but the difference lies in engineering precision, control accuracy, and mechanical integrity. HONGQI has developed its machines through decades of research, ensuring each model delivers outstanding consistency and performance.
Barrel & Screw: Manufactured from 38CrMoAlA alloy steel, nitrided for wear resistance and long lifespan.
Gearbox System: Precision-machined, high-torque, and low-noise helical design.
Heating System: Multi-zone ceramic heaters with PID temperature control for ±1°C precision.
Cooling System: Air or water-cooled configurations to maintain thermal balance.
Each extruder is CNC-machined and tested under load conditions, guaranteeing 100% product qualification before shipment.
HONGQI extrusion machines are equipped with:
High-efficiency motors and inverters to reduce energy use.
Optimized screw geometry to improve plasticizing performance.
Automatic feeding systems for consistent throughput.
Smart PLC control for real-time monitoring and data logging.
As a result, our clients achieve up to 20% power savings and higher production yields compared to standard models.
Our Plastic Extrusion Machines are widely used in:
Plastic recycling and granulation plants
Polymer compounding and masterbatch facilities
Sheet and film manufacturing
Cable and pipe extrusion lines
HONGQI machines are exported globally and trusted for their reliability, energy efficiency, and user-friendly operation.
Different extrusion machines serve different manufacturing goals.
To choose the right one, consider your material type, production scale, and processing complexity.
In today’s competitive plastic industry, precision-built machines are the key to consistent quality and sustainable production.
At HONGQI Plastic Machinery, our Single-Screw and Twin-Screw Pelletizing Extrusion Machines represent the highest standards of performance, durability, and automation. Designed with 20+ years of expertise and strict ISO9001:2015 quality control, they help manufacturers maximize output while reducing operational costs.
Whether for plastic recycling, engineering plastic modification, or masterbatch production, HONGQI provides tailored solutions that ensure smooth operation, energy efficiency, and long-term reliability.
