I. Introduction to Plastic Waste Shredder

A plastic waste shredder is a specialized machine for processing plastic waste. It shreds large, irregularly shaped, or bundled pieces of plastic material into smaller fragments, preparing them for subsequent sorting, washing, and recycling processes.

In a waste sorting and recycling production line, the shredder is at the front-end processing stage.

II. Working Principle Plastic Waste Shredder

Shredders can be mainly divided into three types: single-shaft shredders, dual-shaft (or four-shaft) shear shredders, and tearing coarse shredders.

1. Single-shaft shredders adopt a horizontal design and are equipped with a single rotating cutter shaft.

This type of shredder features indexable blades and is equipped with self-cleaning, contamination-free rotor seals, effectively protecting the bearings from material contamination and extending the equipment’s service life.

2. Twin-shaft shredders rely on two opposing rotating cutter shafts to shear and tear materials.

A significant advantage of this type of equipment is its ability to handle materials of various shapes, sizes, and materials, unaffected by factors such as material hardness or density, making it highly adaptable.

3. Shear shredders primarily rely on the principle of “shearing and cutting” to complete the shredding process.

III. Key Technologies and Development

Technical Features:

Intelligent Control System
Safety Protection System
Wear-Resistant and Noise-Reducing Design

IV. Market Applications and Selection

plastic waste shredder

Generally, shredders are divided into three types: small-capacity shredders, medium-capacity shredders, and large-capacity shredders.

Key factors to consider when selecting a shredder include: the type and characteristics of the material to be processed (hardness, toughness, size), required output, output size requirements, and equipment energy consumption and space limitations.

For long plastic parts and wood-plastic composites (such as polypropylene, high-density polyethylene, PVC composite wood, etc.), single-shaft shredders may be a more suitable choice. For mixed plastic waste with various materials and irregular shapes, dual-shaft shredders often demonstrate better adaptability.

V. Position in the Waste Sorting Production Line

Shredders are typically the first step in a plastic recycling production line. After being shredded, the material is conveyed to a sorting system. In modern intelligent sorting systems, shredded material is more easily and accurately identified and sorted.

At the Guoxin Machinery waste compression station, high-speed sorting robots can accurately grasp and sort shredded plastic bottles, cans, paper products, and other recyclables, achieving a sorting speed of up to 5400 times per hour.

This combination of shredding and intelligent sorting increases the efficiency of the entire sorting process by more than 40%, while simultaneously increasing the purity of recyclables by approximately 15%.