Laboratory Pulverizer Micronizer Lab Plastic Grinder Mill Machine Description:

Laboratory Pulverizer Micronizer Lab Plastic Grinder Mill Machine Advantages：

Self-contained operation — no external services required. The PNLP requires only an electrical supply and (for cryogenic mode) a liquid nitrogen connection. No compressed air line, dedicated exhaust duct, or external classification equipment is needed. This allows installation in standard laboratory spaces without facility modification.

10–400 mesh in one machine. The same unit produces both coarse plastic powder (10–30 mesh for rotomolding or compounding trials) and ultra-fine micron-range powder (200–400 mesh for SLS powder evaluation, pharmaceutical particle analysis, or fine coating development) by adjusting the disc gap and sifter screen. No secondary micronizing equipment required for the fine end of the range.

Ambient and cryogenic modes — elastic and heat-sensitive materials included. The cryogenic mode uses liquid nitrogen to embrittle materials that deform rather than fracture at ambient temperature — rubber, TPU, EVA compounds, wax-based formulations, and certain adhesives. Switching between modes does not require hardware changes.

Minimal material waste between samples. The 10-lb hopper capacity and short internal conveying path minimise the amount of material held in the system between trials. Rapid cleaning between batches supports multi-material lab sessions with expensive or limited sample quantities.

Reproducible results — consistent speed, temperature, and feed rates. The integrated controller maintains stable operating parameters across a sample run, producing reproducible particle size data that can be reliably compared between trial batches or cited in R&D documentation.

Mobile, compact footprint. 49″ L × 30″ W × 112″ H overall, mounted on casters. Fits in standard laboratory aisles and can be moved to different work areas or cleanroom-adjacent spaces without tools.

Application Areas

SLS and powder bed fusion polymer evaluation. Selective laser sintering (SLS) and multi jet fusion (MJF) require polymer powder with tight particle size distribution, typically D50 50–100 µm (approximately 150–300 mesh). The PNLP micronizer produces lab-scale SLS powder samples from PA12, PA11, TPU, and other SLS-compatible polymers for formulation evaluation and print trial before committing to a production grinding run.

Pharmaceutical and food-grade sample grinding. The PNLP handles pharmaceutical excipients, active ingredients, food additives, and nutraceuticals at 100–400 mesh for particle size analysis, dissolution testing, and formulation development. The closed grinding chamber and self-contained conveying system prevent cross-contamination between batches.

Engineered resin and rubber characterisation. R&D and quality control laboratories grind small samples of engineering polymers, rubber compounds, and adhesives to fine powder for DSC, TGA, XRF, and infrared spectroscopy analysis — analytical techniques that require powder rather than solid sample forms.

Plastic and polymer powder product development. Coating powder, powder-in-mould coating, and specialty thermoplastic powder product developers use the PNLP to produce small-batch samples of new formulations for application testing before scaling to industrial production equipment.

Frequently Asked Questions

What is the difference between a laboratory pulverizer and a laboratory pulverizer micronizer?

A standard laboratory pulverizer (such as the PNLP-200) typically operates in the 20–120 mesh range for plastic and polymer applications — coarse to medium particle size for rotomolding powder trials, masterbatch development, and compounding sample production. A micronizer is optimised for sub-100 mesh (fine to ultra-fine) output, with disc tolerances, sifter precision, and (typically) cryogenic capability designed for particle size ranges used in SLS powder evaluation, pharmaceutical formulation, and analytical sample preparation. The PNLP micronizer covers both ranges (10–400 mesh) in a single unit, making it the appropriate choice when a laboratory needs to produce samples across the full coarse-to-micron range without two separate machines.

What materials can the PNLP micronizer process in cryogenic mode, and what fineness is achievable?

Cryogenic mode with liquid nitrogen is used for materials that deform rather than fracture cleanly at ambient temperature — rubber, TPU, EVA at high VA content, soft PVC, wax-based compounds, certain adhesives, and some engineering resins with high impact modifier content. In cryogenic mode, the liquid nitrogen embrittles these materials before they reach the grinding disc, enabling consistent fine powder production. Achievable fineness in cryogenic mode is typically 30–50% finer (smaller D50) than ambient mode at the same disc gap setting. For SLS-compatible PA12 and PA11, cryogenic grinding is the standard production method for commercial powder — the PNLP produces lab-scale samples representative of cryogenic production powder for print trial evaluation.

What utilities are required to operate the PNLP micronizer?

In ambient mode, the only utility requirement is an electrical supply (5 HP / 3.73 kW motor; available in 460/60/3, 380/50/3, and 415/50/3 configurations). No compressed air, external exhaust, or cooling water connection is required — the built-in flywheel blower handles internal pneumatic conveying. In cryogenic mode, a liquid nitrogen supply is required in addition to the electrical connection. A standard 160–230 litre liquid nitrogen dewar placed adjacent to the machine provides adequate supply for a typical lab session. No permanent LN₂ piping installation is required — a flexible connection hose from the dewar to the machine inlet is standard.

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