1. Overview
The HAAKE MiniJet Pro is a compact piston-based micro injection molding system designed for producing high-quality polymer test specimens from only a few grams of material. It supports rapid heating/cooling and precise molding control to accelerate formulation screening before scale-up. Sample preparation for mechanical testing, optical testing and rheometry
Features:
- Requires only 2 to 12.5 mL of material
- Test specimens produced from powders, pellets or direct melt transfer
- Processing parameters: temperature, injection pressure, duration
2. Key Capabilities
- Processes very small material quantities (~2–5 g)
- Fast thermal cycling for quick trial-and-error studies
- Precise control of temperature, injection pressure, holding pressure, and time
- Produces dog-bone tensile bars, discs, and custom shapes for mechanical/thermal analysis
- Compatible with most thermoplastics, blends, additives, and masterbatches
3. Typical Applications
- R&D screening of polymers, composites, and blends
- Preparing molded specimens for tensile, flexural, impact, DMA, DSC, TGA
- Studying color stability, degradation, and processability under molding conditions
- Integrated workflow with HAAKE MiniCTW or other micro-compounders
4. Operating Notes
- Dry moisture-sensitive polymers (e.g., nylon, TPU, PET) before molding
- Set proper barrel/nozzle/mold temperatures according to polymer requirements
- Optimize injection pressure, holding pressure, and time to avoid short shots or flashing
- Clean the barrel between materials to prevent contamination