Case Overview
Full-process case study: customer PET waste processed through the LF-300 spiral crusher for semi-plasticizing. Demonstrates the performance of spiral extrusion and shearing on PET waste.
1. Material and Target
| Material Type | PET scrap (polyethylene terephthalate) |
|---|---|
| Initial Condition | PET sheet / bottle flake / offcuts; rigid or semi-rigid |
| Material Source | Customer-supplied material |
| Key Challenge | PET has relatively high hardness — tool wear during crushing requires attention; semi-plasticizing temperature must be controlled near the PET softening point |
| Target Output | Semi-plasticized (dense granules / agglomerates) |
| Downstream Use | Pre-treatment for recycled PET pelletizing, direct injection molding as virgin-material substitute |
2. Case Visuals
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Raw Material
On-Site
Finished Product
3. Equipment Setup
- Core Equipment: LF-300 Spiral Crusher
- Process Route: PET scrap direct feeding → spiral extrusion & shearing + semi-plasticizing → agglomerate discharge
- Auxiliary System: High-wear-resistant alloy blade set + reverse control
4. Process Highlights
Spiral Extrusion Semi-Plasticizing
The LF-300 breaks down PET scrap through spiral extrusion and shearing, while frictional heat brings the material to a semi-plasticized state where it naturally agglomerates into dense granules. Output size is adjustable in the 0.5–50 mm range.
Wear-Resistant Alloy for Hard Material
PET is harder than soft plastics such as PE/EVA — the high-wear-resistant alloy blade set ensures stable operation even under hard-material conditions.
On-Site Customer Verification
The customer tested with their own material on site, verifying the equipment's processing effectiveness and output quality on PET scrap.
5. Result Summary
- Output: Semi-plasticized dense granules / agglomerates; reduced volume for easier storage and transport
- Pellet Properties: Increased density, suitable for direct entry into the recycled pelletizing process
- Applications: Pre-treatment for recycled PET pelletizing, injection molding feedstock substitution, solid waste volume reduction