Overview of Plastic Pelletizing Machine

Corresponding Content:

Equipment Nature: A professional industrial equipment specially designed for processing waste HDPE plastic materials (such as HDPE film, HDPE pipe scraps, HDPE bottle flakes, HDPE injection molding leftovers) into uniform and high-quality HDPE plastic pellets through processes of crushing, melting, extruding, shaping and cutting.
Applicable Materials: Waste HDPE plastic film, HDPE pipe scraps, HDPE bottle flakes, HDPE injection molding leftovers, HDPE blow molding waste, HDPE sheet scraps, etc.
Core Processes: Integration of the entire process from film crushing, feeding, melting & extruding, filtering & impurity removing, shaping, cooling to pelletizing.
Core Value: Realizes the recycling of HDPE plastic waste, solves the problem of HDPE waste pollution; the produced HDPE pellets have excellent mechanical properties (high rigidity, good impact resistance) and can be directly reused for producing HDPE pipes, HDPE films, HDPE bottles, HDPE injection molding products, etc., helping enterprises reduce raw material procurement costs by 40-60%.
Applicable Enterprises: Plastic film recycling plants, plastic product manufacturers, agricultural film recycling stations, packaging material processing enterprises, waste treatment centers.

Key Types of Plastic Pelletizing Machine

Core Product Portfolio & Application Scenarios

HDPE Plastic Pelletizing Machine

The HDPE plastic pelletizing machine is designed to convert clean HDPE flakes—sourced from bottles, drums, pipes, or film—into high-quality, uniform pellets. Featuring a robust single-screw extruder, precision die head, and automatic underwater or strand-cutting system, it ensures consistent melt homogeneity and pellet integrity. The resulting pellets are ideal for reuse in injection molding, blow molding, and pipe extrusion. Built with energy-efficient motors and PLC control, the machine offers stable, low-maintenance operation for recycling plants and compounders worldwide.

PP PE Rigid Plastic Recycling Pelletizer Machine

The PP/PE Rigid Plastic Recycling Pelletizer Machine is designed to process post-industrial or post-consumer rigid plastics—such as HDPE bottles, PP containers, crates, and caps—into uniform, high-purity recycled pellets. The system integrates feeding, extrusion, melt filtration, and pelletizing (strand or underwater cut) to ensure stable output and excellent pellet quality. With PLC control, energy-efficient heating, and customizable capacity (100–800 kg/h), it’s ideal for producing reusable raw material for injection molding, sheet, or pipe production.

Complete Process Flow & Equipment Configuration

Disassembly of the entire production process and detailed description of each functional module

HDPE Pelletizing Line Sub-module Specifications

Sub-module Name	Composition	Function
HDPE Crushing Module	Special HDPE crusher (high-toughness blade), discharge conveyor, metal detector	Crush large pieces of HDPE materials into small fragments (3-5cm) to facilitate subsequent melting; detect and remove metal impurities in HDPE materials to protect the follow-up equipment.
HDPE Cleaning & Dewatering Module	Bubble cleaning tank, high-pressure spray device, centrifugal dehydrator	Remove soil, oil stains, ink and other pollutants on the surface of crushed HDPE fragments; dehydrate the cleaned HDPE fragments to moisture content ≤1% to avoid bubbles in the melting process.
Feeding Module	Speed-adjustable spiral feeder, hopper, level sensor	Realize uniform and continuous feeding of dehydrated HDPE fragments; adjust feeding speed according to the melting state of the extruder; avoid material accumulation or insufficient feeding.
Melting & Extrusion Module	Screw extruder (single/double screw optional), multi-zone heating system, temperature control device	Heat and melt the HDPE fragments uniformly; adjust the heating temperature according to the type of HDPE material (HDPE film: 180-230℃, HDPE pipe/bottle flakes: 190-240℃); extrude the molten HDPE into a continuous strip through the die head.
Filtering & Impurity Removing Module	Coarse filter, fine filter, magnetic separator, backwashing device	Deeply remove residual impurities in the molten HDPE; the magnetic separator specifically removes metal impurities; the backwashing device can clean the filter screen online without stopping the machine, ensuring continuous production.
Shaping & Cooling Module	Shaping die, water cooling tank, air cooling device, conveyor belt	Shape the extruded HDPE strip into a fixed diameter; cool the HDPE strip quickly through water cooling and air cooling to ensure its hardness and shape stability.
Pelletizing Module	High-speed pelletizing cutter, cutter gap adjustment device, particle separator	Cut the cooled HDPE strip into uniform pellets; adjust the cutter gap to control the pellet size (2-6mm); separate the HDPE pellets from the cutting debris.
Drying & Screening Module	Hot air dryer, vibrating screen, cyclone separator	Dry the HDPE pellets to remove surface moisture (moisture content ≤0.3%); screen out unqualified HDPE pellets (too large/too small); separate the pellets from the residual dust.
Control & Electrical Module	PLC control cabinet, touch screen, various sensors (temperature/pressure/current/level)	Realize automatic control of the entire HDPE pelletizing production line; monitor key parameters in real time; alarm and shut down automatically when abnormal conditions occur; record production data for traceability.

Technical Parameters

Quantitative presentation of key technical indicators of the equipment

HDPE Pelletizing Line Technical Indicators

Technical Indicator	Specific Content	Description
Processing Capacity	20-2000kg/h	Varies by model (single-screw: 100-800kg/h; twin-screw: 300-2000kg/h); can be customized according to project needs.
Applicable Materials	HDPE plastic waste (HDPE film, HDPE pipe scraps, HDPE bottle flakes, HDPE injection molding leftovers, etc.)	Suitable for various HDPE plastic materials; twin-screw models can handle HDPE materials with high impurity content.
Pellet Diameter	2-6mm	Customizable according to downstream HDPE processing requirements; size error ≤±0.1mm.
Pellet Moisture Content	≤0.3%	Ensure the HDPE pellets can be directly stored and reused for production without secondary drying.
Screw Diameter	30-150mm	Corresponds to the processing capacity; the larger the diameter, the higher the processing efficiency for HDPE materials.
Heating Temperature	180-240℃	Multi-zone adjustable; precise control according to HDPE material type (HDPE film: 180-230℃; HDPE pipe/bottle flakes: 190-240℃); temperature error ≤±2℃.
Power Consumption	5-60kW	Varies by processing capacity and model; energy-saving models can reduce energy consumption by 15-25% when processing HDPE materials.
Overall Dimensions	Customized	Typical size range: 4m×1.5m×2.2m - 15m×3.5m×4.5m; can be optimized according to the workshop space.
Installation Requirement	Indoor workshop, flat concrete foundation, 380V/220V voltage, water supply and drainage system	Voltage can be customized according to the requirements of different countries/regions; the integrated model needs to be equipped with a sewage treatment device.
Certifications	CE, ISO 9001, SGS	Complies with mainstream global market access standards, ensuring cross-border sales and use.

Value Advantages for Customers

High Economic Benefits

Strong Adaptability

Reliable Quality & Long Service Life

Key components (screw, cutter, bearing, motor) are made of high-quality alloy materials and well-known brand products
undergo 72-hour continuous operation testing with HDPE materials before delivery
service life of the whole machine reaches 8-12 years
equipped with a complete spare parts supply system to ensure long-term stable operation

Comprehensive After-Sales Support

Frequently Asked Questions

Can the machine process HDPE waste with a lot of soil and oil stains?

Yes. The integrated model is equipped with an enhanced cleaning module (bubble cleaning + high-pressure spray), which can effectively remove soil and oil stains on the HDPE surface; the subsequent centrifugal dehydrator can dehydrate the HDPE to moisture content ≤1%, ensuring the melting effect. For severely polluted HDPE materials, an additional chemical cleaning module can be customized.

Can different types of HDPE waste be processed at the same time?

Yes. The twin-screw model is specially designed for mixed HDPE materials; it has strong mixing and melting capacity, which can uniformly mix and melt different types of HDPE waste (such as HDPE film and HDPE bottle flakes). It is recommended to pre-classify the materials if high-purity HDPE pellets are required, and the single-screw model can be used for separate processing.

What is the daily maintenance requirement of the HDPE pelletizing machine?

Daily maintenance mainly includes: 1) Clean the crusher, cleaning tank and filter screen regularly to avoid impurity accumulation; 2) Check the wear of the crusher blade and pelletizing cutter, and replace them in time when the wear is excessive; 3) Lubricate the transmission parts (bearing, gearbox) regularly; 4) Check the heating system and sensors to ensure accurate temperature control and parameter monitoring for HDPE processing.

What is the delivery time and payment terms?

The delivery time for standard models is 25-35 days; customized models (such as integrated models with enhanced cleaning functions) take 35-45 days. We support flexible payment terms (T/T, L/C, DP) and accept small-batch trial orders. For bulk orders, we provide preferential pricing and phased delivery services.

Do you provide sample testing services for HDPE materials?

Yes. Customers can send their HDPE waste samples to us; we will process them into finished HDPE pellets using the corresponding model equipment and send the samples back for inspection. We also provide test reports (pellet purity, moisture content, particle size) to help customers confirm the equipment performance. The courier cost is borne by the customer.