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Home / Products / Plastic Pelletizing Machine / Pet Bottle Flakes Pelletizing Machine

Pet Bottle Flakes Pelletizing Machine

The PET flake pelletizing system is a high-efficiency solution designed to convert cleaned, crushed, and dried PET flakes into high-quality recycled pellets.

The complete line typically includes:

Extrusion unit

Filtration system

Pelletizing unit

Automated control module

Based on the characteristics of the input material and the desired pellet quality, we recommend using a parallel twin-screw extruder for optimal performance.

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    Superior plasticizing effect with consistent output quality

    The screw design offers excellent shearing and mixing performance, ensuring a uniform PET melt and stable IV (Intrinsic Viscosity).
    The resulting pellets are consistently sized, and the melt flow has no dead zones, which effectively reduces hollow pellets and yellowing issues.

    Efficient Degassing to Minimize PET Degradation Risk

    Enhanced degassing performance through forced vacuum venting effectively removes moisture and volatile compounds.
    This reduces the risk of thermal degradation, helping to preserve the molecular weight and intrinsic viscosity (IV) of PET.。

    Flexible Process Adjustability for Varying Material Conditions

    The system allows for flexible adjustment of screw combinations, thread configurations, temperature zones, and shear intensity.
    This ensures compatibility with PET flakes of varying IV levels and different impurity contents.

    Suitable for High-Filler, Modified, and Composite Pelletizing

    Supports the direct addition of additive masterbatches, modifiers, and fillers to enhance material properties.
    Enables efficient compounding of PET with other materials (e.g., glass fiber, flame retardants), making it ideal for specialized and functional applications.

     

     

    Double Stage Pelletizing Machine Process

     

    		 

    PET Flake Feeding

    Ensures stable plasticizing and melting, suitable for processing materials with different melt flow indexes (MFI).

     

    Screw Extrusion System

    Melts, filters, and uniformly extrudes the raw material.

    Features:
    Parallel twin-screw design, suitable for processing highly contaminated film materials.

    Forced Vacuum Degassing 

    Ensures smooth pellet surfaces with no black spots or bubbles, improving the quality of the final product.

    Melt Filtration System

    Enables non-stop screen changing to ensure continuous production.

    Optional non-stop filter types:

    Piston type

    Plate type

    Scraper type (self-cleaning)

     

    		 

    Strand Pelletizing System 

    Simple structure, low cost, and easy maintenance
    (Optional: Water ring or underwater pelletizing)

    Vibratory Screening for Impurity Removal

    Final Product Collection

     

     

    The processing characteristics of PET—especially its sensitivity to moisture, tendency to degrade, and high requirement for melt uniformity—make parallel twin-screw extruders a significantly more suitable choice.

    Specifically, this configuration offers clear advantages over single-screw or other extrusion systems in terms of degassing and dehumidification efficiency, melt homogeneity, product consistency, and process flexibility.
    This is the fundamental reason why parallel twin-screw extruders are widely adopted in PET pelletizing lines across the industry.

     

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About Us
Zhangjiagang Boxin Machinery Co., Ltd.
Zhangjiagang Boxin Machinery Co., Ltd is China Pet Bottle Flakes Pelletizing Machine Manufacturers and Custom Pet Bottle Flakes Pelletizing Machine Factory, an innovative company that remains committed to plastic recycling and extrusion technology and specializes in providing plastic recycling washing and granulation equipment.
We are a professional supplier of customized solutions to plastic recycling, on the basis of our development teams and a wealthy content of industrial experience.
Main Products of Boxin: PET bottle recycling washing line, PE film /PP woven bag recycling washing line, HDPE /PP hard plastic recycling washing line, plastic pelletizing line and plastic shredder, plastic crusher machine.
VISION
Being an industry-leading provider for plastic recycling equipment and solution by using high quality as base and taking technical innovation as breakthrough and customer demand as orientation.
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