Waste PP HDPE Bottle Flakes Granulator Machine

Waste PP HDPE Bottle Flakes Granulator Machine | Plastic Recycling Line

Raw Material: PP HDPE Bottle Flakes, Rigid Plastic Shreds
Output Capacity: 300 - 1000 kg/h or customized
Extruder Type: Single Screw / Double Stage (Mother-Baby)
Pelletizing Method: Water Ring Die-Face Cutting / Strand Pelletizing
Degassing System: Double Vacuum Degassing Zones
Screen Changer: Continuous Hydraulic Non-Stop Screen Changer
Control System: PLC Smart Touch Screen (Siemens/Schneider)
Main Motor Power: 90kW - 250kW (Customizable)

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Product Details

Product Tags

Heavy-Duty Waste PP HDPE Bottle Flakes Granulator Machine

Product Overview:

Our Waste PP HDPE Bottle Flakes Granulator Machine is specifically engineered for re-pelletizing post-consumer and post-industrial rigid plastics, including HDPE milk bottles, Shampoo Bottles, and Rigid PP/HDPE Scraps etc,then make them become into High-Value Premium Pellets.

Featuring a heavy-duty force-feeding system and an optimized high-L/D screw design, this pelletizing line smoothly processes light and irregular flakes without bridging or choking. Equipped with dual vacuum degassing and continuous non-stop hydraulic filtration, it effectively eliminates air bubbles, moisture, and fine contaminants to output uniform, high-density PE/PP granules ready for blow molding, pipe extrusion, or injection molding.

Why Choose Our HDPE/PP Flake Pelletizing Line?

Specialized Force Feeder: Prevents material bridging in the hopper, ensuring a steady and continuous feeding rate for low-bulk-density flakes.
Superior Degassing Performance: Double-vacuum degassing vents remove remaining moisture, volatile odors, and print inks, preventing voids and porous pellets.
Non-Stop Hydraulic Screen Changer: Dual-piston or plate-type hydraulic filtration lets you switch screens in seconds without halting production.
Wear-Resistant Bimetallic Screw & Barrel: Special alloy coating extends component lifespan by up to 300% when processing abrasive bottle flakes with mineral fillers.
Flexible Cutting Options: Choose between Water Ring Die-Face Cutting (for spherical, smooth pellets) or Water Strand Pelletizing (for high-viscosity PP/HDPE materials).

Technical Specifications:

Parameter / Model	HGP-300	HGP-500	HGP-800	HGP-1000
Applicable Materials	PP / HDPE bottle flakes, rigid scrap, battery cases, battery crates
Capacity (kg/h)	250 - 350 kg/h	450 - 550 kg/h	700 - 850 kg/h	900 - 1100 kg/h
Extrusion System	Single Stage or Two Stage (Mother-Baby Extruder)
Screw Diameter	100 mm / 120 mm	130 mm / 150 mm	160 mm / 180 mm	180 mm / 200 mm
Screw L/D Ratio	30:1 – 36:1	30:1 – 36:1	32:1 – 36:1	32:1 – 38:1
Pelletizing System	Water-ring die face / Strand cutting
Installed Power	~110 kW	~180 kW	~280 kW	~350 kW

Applicable Raw Materials:

HDPE Milk Jugs & Shampoo Bottle Flakes

PP Caps, Closure & Food Container Scraps

Chemical Drums, Buckets & Crates

Battery Cases & Automotive PP Plastics

Shredded Rigid Pipe & Profile Scrap

Complete Pelletizing Line Process:

1.Screw/Belt Conveyor with Metal Detector: Safely transports bottle flakes while screening out tramp metal.

2.Force Feeder / Side Feeder: Compresses and feeds irregular flakes evenly into the main extruder screw.

3.Primary Extruder (Main Screw): Melts the plastic with precise temperature control and degasses moisture/gas.

4.Hydraulic Screen Filter: Filters out paper labels, sand, and non-plastic impurities.

5.Secondary Extruder (Optional Mother-Baby System): Further homogenizes the melt for superior filtration.

6.Pelletizing Unit: Water-ring or strand cutter turns molten plastic into uniform granules.

7.Dewatering & Vibrating Screen: Separates water and filters oversized pellets.

8.Silo Storage Tank: Blows dry, cooled pellets into storage bags for packaging.

Customer Case & Performance Highlights:

Case Study: HDPE Bottle Recycler in the Middle East

Challenge: High moisture content and paper label residue in crushed laundry bottle flakes caused air bubbles and frequent screen clogging.

Solution: Installed our HGP-500 Double-Stage Bottle Flakes Granulator with dual vacuum degassing and a double-piston screen changer.

Result: Output stabilized at 520 kg/h. Pellet density increased by 18%, enabling 100% direct sale to local blow molding factories.

FAQ:

Q1: What is the difference between processing PE films and rigid HDPE bottle flakes?

A1: PE films are light and fluffy, requiring a Compactor-Extruder (3-in-1 system) to shrink and cut the film first. Rigid bottle flakes have higher bulk density and are best fed directly via a Force Feeder or Side Feeder into the extruder.

Q2: Should I select Single-Stage or Two-Stage (Mother-Baby) Extruder?

A2: If your HDPE/PP bottle flakes are clean, washed, and well-sorted, a Single-Stage machine is sufficient. If the flakes contain residual moisture, ink, or minor contamination, a Two-Stage system provides an extra filtration and degassing phase for optimal pellet quality.

Q3: How long do the screw and barrel last when processing bottle scrap?

A3: With our standard bimetallic treatment (tungsten alloy coating), the screw and barrel typically last 18 to 24 months under continuous 24/7 operation, depending on the inorganic filler and sand content in your flakes.