PRODUCTS

Twin-Shaft Shredder

Main Structure

A twin-shaft shredder (also called a dual-shaft shear shredder) is a heavy-duty industrial machine designed for size reduction, pre-processing, and volume reduction of various materials, particularly plastics.

Key structural components include:

• Rotor System (Core Shredding Mechanism)

Two Counter-Rotating Shafts – Intermeshing shafts with bolted cutting discs/blades.

Cutting Blades/Discs – Made from high-strength alloy steel (e.g., D2, 9CrSi, H13) or tungsten carbide for extended wear resistance.

Bearing & Gearbox Assembly – Supports high torque and shear forces during operation.

• Feeding & Discharge System

Hopper (Feeding Chamber) – Designed for bulky or irregularly shaped materials (e.g., plastic drums, big bags, PE films, EPS EPE foam board, wood pallets, aluminium profiles, household applications).

Hydraulic Pusher (Optional) – Ensures consistent feeding and prevents bridging.

Discharge Screen/Grate – Controls output size (typically 20-100mm, depending on application).

• Drive System

High-Torque Electric or Hydraulic Motor – Powers the twin shafts at low speeds (8-30 RPM) for maximum shearing force.

Planetary Gear Reducer – Ensures smooth power transmission under heavy loads.

• Frame & Safety Features

Heavy-Duty Welded Steel Frame – Withstands extreme mechanical stress.

Overload Protection – Auto-reverse or shutdown to prevent motor damage.

Safety Lockout System – Prevents access during operation.

Application in Plastic Recycling

Twin-shaft shredders are widely used in plastic recycling due to their high efficiency, durability, and ability to handle mixed or contaminated waste. Key applications include:

• 1. Pre-Shredding for Further Processing

Reduces large plastic items (e.g., pallets, crates, automotive parts) into smaller, uniform pieces for further grinding in a crusher or for granulation.

Prepares mixed plastic waste (rigid + flexible) for separation and washing.

• 2.Volume Reduction & Waste Handling

Shreds bulky plastic waste (e.g., EPE panels, HDPE drums, EPS foam) to reduce storage/transport costs.

• 3.Contaminated & Composite Material Recycling

Handles plastic-metal hybrids (e.g., electronic waste, aluminium cans

Tolerates minor contaminants (dirt, labels, small metal pieces).

Suitable Plastic Types

Twin-shaft shredders can process a wide variety of plastics, including:

HDPE (bottles, drums, barrels, containers, films)

LDPE/LLDPE films (shopping bags, agricultural film, stretch film)

PP (automotive parts, crates)

PVC (pipes, window profiles)

ABS/PS (electronics housings, toys, computers, TVs, expanded EPS)

PET (trays, yarn, fiber, packing straps, belts)

Woven PP sacks (bulk packaging)

Nylon (PA), Polycarbonate (PC)

Fiber-reinforced plastics (GFRP, CFRP)

Plastic-metal composites (e-waste, automotive parts)

DS series of twin-shaft shredder