The double-stage water ring pelletizer is a high-performance recycling solution specifically engineered for processing PE squeezed film,
hard flakes, and mixed plastic waste into premium-grade recycled pellets.
Featuring a dual-stage extrusion system, this pelletizing line delivers superior plasticizing and efficient degassing, effectively removing
volatiles to ensure dense, uniform pellet output.
The advanced water ring cutting technology guarantees round, smooth pellets with high bulk density, ideal for HDPE, LDPE, and part of
PP reprocessing. Built with robust construction, this pelletizer offers stable operation, low maintenance, and high throughput, maximizingmaterial recovery value.
It is the ideal plastic pelletizing machine for waste film and rigid plastics, supporting sustainable recycling with consistent quality and
energy efficiency.
Pelletizing Line Configuration
Screw Feeder → Force Feeder → 1st Extruder (with Vacuum Degassing) → 1st Hydraulic Screen Changer → 2nd Extruder → 2nd Hydraulic
Screen Changer + Die Head → Water Ring Pelletizing System → Vibration sieve → Centrifugal Dehydrator → Cyclone System → Packaging
(optional)
A control cabinet is used for the centralized control of the whole plastic pelletzing line. PLC with touch screen system is optional.
Application Scope
1. Material Types:
1) PE squeezed film (LDPE, LLDPE): agricultural film, shrink wrap, stretch film.
2) PE hard flakes: milk bottles, detergent containers, pipes, injection-molded parts.
3) Mixed rigid plastic scrap: from small-diameter pipes, sheets, and crates.
4) Part of PP woven bags, raffia, and non-woven fabric regrind with lower MFI.
Post-industrial film waste (extruder purge, edge trim, start-up lumps)
2. Industry Sectors:
1) Plastic film recycling plants
2) Rigid plastic regrind processing facilities
3) Compounders and masterbatch manufacturers
4) Packaging material production lines
5) Waste management and material recovery facilities (MRFs)
3. Downstream Applications of the recycling pellets：
1) Blown film extrusion for new packaging films
2) Injection molding for industrial parts and containers
3) Pipe and profile extrusion
4) Raffia yarn and woven bag production
5) Sheet extrusion for thermoforming applications
6) WPC products production. Etc
Problems Solved by Two-Stage Pelletizing Line in Plastic Waste Recycling
1. Efficient Removal of Moisture & Volatiles
Post-consumer plastic waste and heavily printed films often contain significant moisture, ink residues, and low-molecular-weight volatiles.
The first-stage extruder is equipped with a large venting port to effectively remove water vapor and volatiles during plasticization. The
second stage further degasses, ensuring dense, bubble-free pellets with excellent quality.
2. Thorough Filtration for High Pellet Quality
Recycled waste often contains impurities such as paper scraps, sand, dust, and metal fragments. The two-stage configuration allows for
dual screen changers—positioned between the two stages and at the die head—to achieve coarse and fine filtration. This multi-stage
filtration system effectively removes contaminants, producing bright, dense, high-purity pellets.
3. Stable Processing of Lightweight, High-Moisture Film Materials
Lightweight, fluffy, and moisture-laden materials such as agricultural film, mulch film, and printed packaging film often cause bridging,
uneven feeding, and output fluctuations in single-stage extruders. The two-stage pelletizing line is specifically designed for high-moisture
(approx. 10%), dirty, and lightweight plastic films, delivering stable, uniform output with high throughput.
Advantage of the double stage water-ring pelletizing line in MG Machinery company:
1, Dual-Stage Design: Ensures superior plasticization and homogenization of both low-bulk-density film agglomerates and high-density rigid PE materials.
2, Water Ring Pelletizing Technology: Produces perfectly spherical and uniform pellets with minimal dust and fines. The water ring system provides instant cooling and reduces oxidation.
3, Specifically for Hard PE Flakes & Squeezed Film Agglomerates: Optimized screw geometry and die configuration for tough-to-process PE materials, including post-consumer and post-industrial film scrap (e.g., stretch film, shrink wrap, agricultural film after washing and drying).
4, High Output & Energy Efficiency: Compared to strand pelletizers, our system offers higher throughput with lower energy consumption, plus fully automatic operation and save labor.
5, Low Maintenance: Quick filtering sieve change and self-cleaning features reduce downtime.
Models of the double stage water-ring pelletizing line euipped with forced feeder for your choice:
Why choose us?
1, we can provide the most suitable solution proposals according to your waste materials conditions and requirement.
2, professional design for machine flowchart and workshop layout according to your workshop area.
3, skilled and experienced workers for the machine manufacturing.
4, good testing for the machines before shipment.
5, shipment on time.
7, careful machine loading and fixing work in container.
8, dispatch engineer for after sale service in your company on time
9, training for machine and operation.
10, technology support.
etc.
Our plastic recycling machines and extrusion machines have been exported to many countries in the last 10 years, for example, Japan, South Korea, Vietnam, Indonesia, Thailand, Malaysia, India, Sri Lanka, Iran, UAE, Saudi Arabia, Israel, Iraq, Russia, Ukraine, Serbia, Georgia, Kenya, Ghana, Togo, Sudan, USA, Mexico, Chile, Peru, Bolivia, Argentina, Brazil, etc.
