Grün VPMC Series SWIR Sorting System

Plastic flakes present a sorting challenge where polymer identity is just as critical as color — even a small percentage of cross-polymer contamination can compromise melt consistency, mechanical properties, and the suitability of recycled material for high-value manufacturing applications. For plastic recycling and manufacturing operations, the ability to accurately classify flakes by both polymer type and color in a single pass directly determines the purity of recycled output, the range of viable end-use applications, and the commercial value of recovered material. Advanced multi-spectral sorting is the key to delivering polymer-pure, color-consistent flakes — reliably, efficiently, and at the quality standards demanded by modern manufacturing.

The Grün VPMC Series is an advanced multi-spectral sorting system tailored for the plastic recycling and manufacturing industry. Leveraging the fusion of cutting-edge dual-band InGaAs-SWIR and high-resolution RGB imaging technology, the system automatically classifies plastic flakes by polymer types and color variations — enhancing the purity of recycled plastics for direct reuse in new products.

Using application-specific sorting algorithms, the system ensures consistently high classification accuracy across diverse flake compositions and contamination profiles — helping processors maximize polymer-pure yield, reduce costly batch rejections, and deliver recycled material that meets the exacting quality standards of downstream manufacturing with unmatched confidence.

Technical Features

● Tailored Optical Sorting System for Plastic Flakes

✦ Innovative high-capacity 2-layer 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 and Air Cooling System maintains high operation reliability and performance consistency, and minimizes downtime

✦ Modular vertical frame design lets processors scale capacity to match their needs, available in 4, 6, or 8-chute configurations

● Tried-And-Tested Industrial Simultaneous Polymer and Color Inspection System 

✦ Dual-Band InGaAs-SWIR Camera System

✩ Cutting-edge Dual-Band InGaAs-SWIR Camera System identifies polymer types — e.g., PET, HDPE, PP, etc. — by analyzing their unique short-wave infrared spectral absorption signatures across two distinct wavelength bands, enabling reliable differentiation of polymers.

✩ Stable Air Cooling System maintains optimal InGaAs sensor operating temperature and Halogen Lighting System thermal stability, ensuring consistent spectral performance even in high-temperature production environments.

✦ High-Resolution RGB Camera System

✩ High-precision identification of color variations, off-color flakes, and surface contaminants, delivering accurate chromatic classification across diverse flake compositions.

✩ High-Intensity LED Illumination System provides bright, uniform lighting that enables detection of subtle color differences, minimizing false rejects and maximizing material recovery.

● 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

By combining dual-band SWIR polymer identification with high-resolution RGB color classification, the system simultaneously removes both wrong-material and off-color flakes in one pass, eliminating the need for sequential sorting stages and reducing operational costs.

Dual-SWIR sensors identify polymer types based on unique spectral absorption signatures, while high-resolution HR-RGB cameras detect a variety of color variations, together delivering cleaner, more consistent flake fractions that meet stringent quality requirements for extrusion and pelletizing.

Recovers valuable flakes from highly contaminated mixed streams that would otherwise be downgraded or discarded, maximizing yield from every ton of input material.

Produces polymer-pure, color-consistent fractions that qualify for premium applications such as bottle-to-bottle recycling, commanding significantly higher market prices.

Operators can switch between sorting tasks (e.g., purifying PET this month, producing clean PP fractions next month) on the same machine without hardware changes, enabling rapid response to market demand.

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

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

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

Specifications