Color Masterbatch Preparation (Applications Requiring High Dispersion)

Two-Stage Extruder

A two-stage extruder, also known as a double-stage extruder, is a high-performance plastic recycling and pelletizing machine designed for processing high-moisture, high-impurity, and highly-volatile materials. It combines the advantages of a single-screw primary extruder and a secondary low-temperature extruder, delivering excellent degassing, stable melting, and superior filtration performance. This configuration makes the two-stage extruder ideal for PE/PP film recycling, woven bag recycling, foam materials, washing line flakes, and low-bulk-density plastics.

The two-stage extrusion process ensures efficient melt filtration, double degassing, and temperature stabilization, producing uniform, high-quality recycled pellets. This system is widely used in plastic recycling plants, packaging material recovery, agricultural film reprocessing, and industrial waste recycling.

Applications of the Two-Stage Extruder

PE/PP Film Recycling: agricultural film, stretch film, packaging film.

Woven Bag & Raffia Recycling: PP woven bags, jumbo bags, tapes.

Foam Material Recycling: EPS, EPE, XPE foam reprocessing.

Washed Flake Pelletizing: post-consumer or post-industrial flakes.

Low-bulk-density Materials: soft plastics, foam scraps, lightweight waste.

General Plastic Reprocessing: LDPE, HDPE, LLDPE, PP, EVA, ABS.

Technical Specifications

These specifications allow the two-stage extruder to handle contaminated, wet, or unstable materials with exceptional efficiency and consistency.

Key Advantages

Double degassing design removes moisture, ink, and volatile impurities effectively.

Stable low-temperature secondary stage prevents material degradation and burning.

High-performance melt filtration ensures clean, uniform recycled pellets.

Designed for high-moisture and high-impurity plastics, providing stable output.

Energy-efficient motors and optimized screw structure reduce operating costs.

Large capacity, suitable for heavy-duty industrial recycling operations.

FAQ

Q1: What materials are suitable for a two-stage extruder?
PE, PP, LDPE, HDPE, LLDPE, PP woven materials, foam, washed flakes, and soft plastics.

Q2: Why choose a two-stage extruder instead of a single screw?
Two-stage extruders offer better degassing, filtration, stability, and pellet quality, especially for film and foam.

Q3: Can the feeding system be customized?
Yes. Options include conveyor feeding, compactor feeder, or force-feeding hopper.

After-Sales Service

We provide complete installation support, operator training, process optimization, 24/7 online technical assistance, spare parts supply, and lifetime maintenance guidance to ensure your two-stage extruder runs efficiently and reliably.

Over the past more than ten years, MKPL has been known as a professional manufacturer of advanced extruder production line. We are a professional supplier of compounding and modification extruders., with hundreds of extruder production lines running in the world, perfect and effective service network and experienced team of processing engineers and well-equipped process laboratories.

Since 1999, the market share of MKPL twin screw extruder has steadily increased. Our extruders have been sold and installed in Asia for more than a decade. We are very close to our customers through our subsidiaries in Taiwan and Nanjing through our perfect proxy network.

Based on our rich experience and expertise, we have manufactured TSE series twin screw extruders. Adopting the concept of German engineering design and meeting the high standard of Chinese purchasing and assembling, this extruder not only maintains high quality standards, but also meets the special needs of the Asian market. Therefore, we have opened our supplying and service window to more customers in

the plastic processing industry in Asia.

Nanjing MKPL Global Service

Experienced experts provide professional services to global customers. Nanjing Technology Laboratory provides production-related environment where customers can conduct product development and testing. In Nanjing MKPL Maintenance Center, screw and barrel can be quickly repaired or thoroughly inspected, which is economical and reduces downtime. Nanjing Branch of China and Taiwan Company can provide professional first-class Chinese and English services and training.