Three Pulverizer Types for Different Applications

Wanrooe offers three plastic pulverizer designs, each suited to specific material properties and fineness requirements:
PNMF Grinding Disc Pulverizer — Uses a grinding disc configuration for general-purpose powder production. High-speed rotating discs create impact and shear forces that reduce plastic chips to fine powder.
PNMP Knife Disc Pulverizer — Employs a knife disc design with moving blades tangent to fixed blades. Strong collision forces grind material into powder. Air and water cooling control temperature to prevent material degradation.
Both disc types feature: precision spindle bearings, automated feeding and discharge, integrated sorting, fully enclosed dust-tight operation, and quick-access door covers for cleaning and maintenance.

PNMF Series Pulverizer Blade

PNMP Series Plastic Pulverizer Blade

PNCP Cryogenic Plastic Pulverizer

For materials that are tough, elastic, or heat-sensitive at room temperature, cryogenic pulverization is the solution. Liquid nitrogen cools material to -196 °C, causing embrittlement. The frozen material then enters the pulverizing chamber where high-speed impellers, blades, and tooth discs impact, collide, shear, and grind it into ultrafine powder.
An integrated airflow classifier separates finished powder from oversize material, returning unqualified particles to the grinding bin for recycling. Fineness reaches 10–700 mesh or micron levels.
Key advantages of cryogenic grinding:

Prevents heat degradation and oxidation

Eliminates explosion risk with volatile materials

Handles elastomers and engineering plastics impossible to grind at ambient temperature
Materials suited for PNCP: PTFE, nylon variants (PA11, PA12, PA4/6, PA6/6, PA6/10), POM, PC, PET, PBT, PPO, TPU, PSU, PPS, PEEK, PIM, VHMWPE, plus general plastics (PVC, PE, PP, PS, AS, ABS)

PNCP Series Cryogenic Plastic Pulverizer

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