Zhida Plastic Machinery Zhida Plastic Machinery

Best Capacity Large Output Made in China Professional Manufacture Metal for Sale Plastic Crusher Machine, Plastic Grinding Machine

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Product Description

Technical Specifications
Model NO.plastic crusher /grinding machine
TypePowerful Plastic shredders
Raw MaterialPET
StructureTop Feed
Knife ClassificationPiece Knife Crusher
Knife RollHollow Knife Roller
AutomationAutomatic
CertificationCE, SGS
MotorSiemens
InvertersABB
Blade MaterialSKD11
Core PartPlastic Film Crusher
Machine MaterialHard Steel
Temp. ControlOmron
HS Code847780000
Capacity500kg/h
Product Overview

Plastic crusher/granulator/grinding machine is used for size reduction, an essential step in plastic recycling. It has the ability to quickly break down plastic products such as plastic bottles, brackets, drums, and films into small, uniform pieces called "regrinds" or "flakes".

In the plastic grinding machine, cutting knives are installed on a high-speed rotating rotor driven by an electric motor. This rotor is encased in a cutting chamber where stationary knives are installed. As the plastic scrap enters this cutting chamber, the rotating knives come into contact with the stationary knives cutting the plastic into small pieces. A large screen mesh with many holes is placed at the bottom to control the output size.

Key Characteristics
  • Easy for changing the knives (blades); knives can be changed from front or back.
  • Widely applicable to solid waste products like injection parts, films, sheets, bottles, and woven bags.
  • Produces high-quality and uniform granules.
  • Low electricity consumption, durable operation, and low noise levels.
  • Uses high-quality steel material specifically for crusher cutters.
  • Stable and durable blade base structure, resistant to damage.
  • Hopper, crusher room, blades, and screen can be removed and mounted easily for cleaning.
  • Less occupied floor area.
  • Suitable for recycling PVC, PE, HDPE, LDPE, PP, and other plastics.
Product Gallery
Plastic Crusher Overview
Overview of Crusher Machine
Plastic Granulator Views
Multiple Perspectives
Back View
Machine Back Design
Side View
Side Profile
Crusher Chamber
Crusher Chamber Interior
Shaft and Blade
Shaft and Cutting Blade
Wet Plastic Grinding Technology

A wet grinding machine uses water jets inside the cutting chamber. The water acts as a lubricant, lowering the temperature significantly below the plastic's melting point. This prevents plastic from melting and sticking to the knives, while also providing a preliminary cleaning of the material.

Wet grinding is proven to reduce knife dulling, extending the time between sharpening by up to three times. It is commonly used for PET bottles and PE/PP films.

Technical Parameters
Model 400 600 800 1000
Rotor Blade Dia. (mm) 250 380 400 650
Qty of Rotating Blades 12 18 24 24
Blade Speed (rpm) 560 560 560 560
Qty of Fixed Blades 2 4 4 4
Screen Sieve Hole (mm) Φ10-14 Φ10-14 Φ10-14 Φ10-14
Capacity (kg/h) 80-100 250-350 400-500 700-800
Power (kw) 7.5 18.5 37 55
Inlet Size (mm) 260×400 400×600 420×800 600×1000
Weight (kg) 650 1200 1500 2000
Maintenance Guidelines
  • Knife Sharpening: Routinely sharpen and rotate rotor and stationary knives to ensure efficiency and reduce stress.
  • Foreign Objects: Keep metals, nuts, and bolts away from the chamber to prevent severe damage to the blades and rotor.
  • Screen Inspection: Ensure the screen is not clogged to prevent material buildup and motor burnout.
  • Lubrication: Keep the motor and bearings well-oiled at all times.
Production & Quality Control

Strict production steps are followed before packing and shipping to ensure every machine is delivered in optimal condition.

Production Step 1
Production Step 2
Quality Check
Shipping Preparation
Frequently Asked Questions (FAQ)
What types of plastic can this machine process?
The crusher is suitable for a wide variety of plastics, including PET bottles, PE/PP films, HDPE containers, PVC, LDPE, woven bags, and even solid injection molded parts.
How do I control the final size of the crushed plastic flakes?
The output size is controlled by the screen mesh located at the bottom of the cutting chamber. Screen hole sizes typically range from 10mm to 14mm, but can be customized to meet specific requirements.
What are the advantages of using a wet crusher?
Wet crushing uses water to cool the blades, preventing plastic from melting. It also pre-washes the material and significantly reduces the wear on the knives, extending their lifespan between sharpenings.
What material are the blades made of?
Our machine uses high-quality SKD11 (high-carbon, high-chromium D2) steel for the blades, ensuring durability and high performance during heavy-duty operations.
How often should the blades be sharpened?
Blade sharpening frequency depends on the material being processed. Processing hard or contaminated plastics will require more frequent sharpening compared to clean, soft films. Regular inspection is recommended to maintain efficiency.
Does the machine come with an automated system?
Yes, our crushers are equipped with Siemens motors and ABB inverters for reliable automation, ensuring stable operation and energy efficiency.

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