Pellet extrusion die BKG® Die Plates

Overview - BKG® Die Plates & Cutter Hubs
BKG® die plates and cutter hubs are engineered for underwater pelletizing systems. Their geometry and materials determine pellet shape, dimensional stability and downstream processability. Designed for a broad range of polymers and industrial conditions, BKG® products prioritize process window control and serviceability.

Die plate types

• Standard electrical die plates: versatile for many standard polymers; tungsten carbide cutting face for wear resistance; easy maintenance and quick die changes.
• Medium-heated die plates: for temperature-sensitive materials; circulating heating medium, efficient insulation and multi-zone temperature control.
• Pressure-reduced die plates: shortened melt channels to lower pressure loss; ideal for high-viscosity and highly filled compounds.
• Multiple row arrangements and nest designs: configurable to produce a wide range of pellet shapes and sizes, including micropellets.

Advanced equipment protection

• Hole patterns and row layouts designed to maximize knife protection.
• Optional surface coatings to increase abrasion and corrosion resistance.
• Protection concepts available for corrosive additives (e.g., brominated compounds).

Options for process optimization

• Multi-faceted row arrays and tailored nest geometries to match process requirements.
• Die plate plugs to tune local pressure and extend application windows.
• Dedicated PET-optimized die geometries for efficient PET pelletizing.

Inspection & grinding
BKG® die plates can be reground multiple times to extend service life. The BKG® online grinding tool mounts in place of the cutter hub and, when coupled to the water box, regrinds the die plate in minutes without full disassembly, reducing downtime and maintenance effort.

Cutter hubs and knives

• Traditional BKG® cutter hubs: available in various sizes to accept different blade counts; straight or angled blade options; rotatable designs.
• BKG® HiCut™: accommodates a higher number of blades (lower cutting speed required), improved wear resistance, flow-optimized for better pellet transport and enhanced directional stability.

Applications

• Underwater pelletizing for a wide range of polymers, including temperature-sensitive and highly filled compounds.
• Processes requiring controlled die temperature, reduced pressure loss or specific pellet geometries (micropellets, technical pellets).
• Lines where rapid maintenance, online regrinding and long cutting-face lifetime are critical.

Technical specifications

• Brand / product line: BKG® (Nordson Polymer Processing Systems).
• Cutting face: tungsten carbide options for wear resistance.
• Heating options: electrical multi-zone heating; circulating heating medium with insulation for medium/heated plates.
• Designs: standard electrical, medium-heated, pressure-reduced; multiple row and nest configurations.
• Flow/pressure features: shortened melt channels, die plate plugs for pressure tuning.
• Pellet types: supports wide range of shapes/sizes including micropellets; PET-optimized geometries available.
• Protection: arranged hole patterns and optional coatings for abrasion/corrosion resistance.
• Serviceability: regrindable in situ using the BKG® online grinding tool; easy die change.
• Cutter hub variants: various sizes, blade counts, rotatable hubs, straight/angled blades; HiCut™ for higher blade density.