Grün VPC Series Optical Sorting System

Plastic flakes present a sorting challenge where color consistency directly determines material value — mixed-color flake streams, even when clean and uniform in size, carry significantly lower market value than color-sorted output. For recycling pre-processing plants, the ability to accurately separate flakes by color — including subtle shade variations that are difficult to distinguish visually — is the key to transforming low-value mixed streams into premium, color-pure material ready for high-end reprocessing applications. 

The Grün VPC Series is an advanced machine-vision-based sorting system tailored for global recycling pre-processing plants, unlocking the full commercial potential of every flake. Leveraging high-resolution RGB (HR-RGB) imaging technology, the system detects and recovers high-value plastic flakes from material streams based on precise color differentiation — increasing the value of recycled material output. For enhanced detection and recovery of light-colored flakes, optional NIR cameras are available to extend sorting capability beyond the visible spectrum.

Using application-specific sorting algorithms, the system ensures consistently high sorting accuracy across diverse flake compositions and color profiles — helping processors maximize color-sorted yield, reduce material downgrading, and deliver premium-quality recycled flakes with unmatched confidence.

Technical Features

● Tailored Machine-Vision-Based Sorting System for Plastic Flakes

✦ High-capacity vibratory feeding system evenly distributes plastic flakes into a single layer to minimize overlapping

✦ Sealed scanning/control enclosures provide machine with high-level dust protection

✦ Integrated Dust Control System maintains high operation reliability and performance consistency, and minimizes downtime

✦ Modular vertical frame design offers 4, 6, 8, or 10-chute configurations, enabling processors to select the capacity that best fits their production requirements

● High-Precision Color Inspection System

✦ High-Resolution RGB Camera System differentiates colors for high-purity output

✦ Optional NIR Camera System enhances the identification of light-colored flakes

✦ High-Intensity LED Illumination System enables detection of subtle color differences, minimizing false rejects

● High-Performance Air Ejector System

✦ Engineered for enhanced durability, optimized speed and air consumption

✦ Accurate rejection and reliable performance at high-capacity sorting

✦ Adjustable settings for typical plastic flake sizes (3-15 mm)

● 15-Inch Industrial Touchscreen Control Panel

✦ Intuitive HMI with multilingual support

✦ Instant switching between product profiles

✦ Comprehensive remote support system

✩ Remote Access and Monitoring

✩ Real-time Performance Dashboard

✩ Live Expert Diagnosis

✩ Interactive Troubleshooting

Applications

Benefits

Produces clean, color-consistent flake streams by removing off-color, contaminated, or mixed-polymer flakes, directly supporting high-grade and high-value recycling applications.

✦ Increased Material Yield

Recovers valuable flakes from mixed-color streams that would otherwise be downgraded, maximizing the return from every ton of input material.

✦ Upgraded Product Value

Color-sorted flakes command higher market prices and qualify for premium end-use applications such as bottle-to-bottle recycling, where strict color and purity standards are required.

✦ Reduced Manual Sorting Dependency

Automates color classification at high throughput, lowering labor costs and eliminating the inconsistency and safety risks associated with manual sorting.

✦ Improved Downstream Processing

Cleaner, color-uniform flakes reduce reprocessing steps, minimize equipment wear, and support more stable extrusion and pelletizing operations.

✦ Consistent Quality at Scale

Delivers reliable, repeatable sorting performance across varying feed compositions, ensuring stable output quality even as input material fluctuates.

Specifications