Choose the Right Plastic Blasting Media for Every Surface Finishing Application. Minimize substrate wear, maximize coating removal speeds, and improve lifecycle metrics.
An engineered, non-silica soft abrasive designed specifically to clean, strip, and deflash parts without damaging the underlying metal or composite substrate.
Plastic media blasting (PMB) was developed by the aerospace industry in the mid-1980s as a safe, cost-efficient, and toxic-free alternative to chemical stripping. Unlike aggressive hard abrasives like aluminum oxide or steel shot, plastic media has a lower hardness index (Mohs 3.0 to 4.0), allowing it to strip coatings without altering the dimensional integrity of sensitive aerospace and automotive panels.
PMB operates on the principle of differential hardness. The hardness of the plastic particle is chosen to be greater than the coating to be removed (such as paint, primer, or powder coats) but softer than the underlying metal or composite substrate (aluminum, titanium, fiberglass). When the particle impacts the surface, the paint is sheared away while the metal remains untouched.
By replacing hazardous chemical stripping solvents, PMB dramatically reduces hazardous waste disposal costs. In addition, plastic blasting media is highly recyclable, capable of being reused 10 to 50 times in modern dry blast cabinets equipped with cyclone separators, significantly lowering carbon footprints compared to single-use silica sands or chemical baths.
Answer three quick engineering questions to dynamically retrieve the exact recommended media specs for your finishing project.
Complete all three steps to calculate the ideal blasting media specifications.
Detailed physical specs and application fields for each grade of plastic blasting media.
Search and filter industrial applications where plastic media outperforms standard abrasive grits.
Removes topcoat polyurethane and epoxy primers from skin panels without work hardening the underlying Alclad 2024 sheets.
Gently clears coatings from thin vintage sheet steel and fiberglass body panels without introducing heat warping.
Fast cleaning of thermoplastic mold deposits without changing the microscopic tooling tolerances.
Acrylic media blasting to clear conformal coatings from delicate PCB solder connections.
Engineering metrics compared directly across soft plastic blasting media and hard minerals or specialty items.
| Media Type | Aggressiveness | Finish Quality | Surface Damage Risk | Dust Generation | Recycling Cycles |
|---|---|---|---|---|---|
| Plastic Media (Types II/III/V) | Medium-Low | Very Smooth | Very Low | Moderate | 10 - 20x |
| Glass Beads | Medium | Satin/Bright | Moderate | High | 5 - 8x |
| Aluminum Oxide | High | Rough Matte | High Risk | High | 6 - 10x |
| Walnut Shells | Low | Slight Residue | Low | Very High | 3 - 5x |
| Baking Soda (Sodium Bicarbonate) | Very Low | Completely Smooth | None | Extremely High | 1x (None) |
Authorized certifications defining particle geometries, raw polymer purity, and test metrics.
The benchmark US Military standard regulating raw material controls, densities, and hardness grades for plastic media blasting.
Aerospace Material Specification detailing quality criteria for specific polymers used in aviation shot peening and surface prep.
International guidelines for verification testing, chemical makeup, and particle size distribution consistency.
Interactive calculations and manuals for industrial blast room design and flow rates.
Convert US Standard Mesh numbers to their equivalent micrometers (µm) and decimal inches.
Estimates approximate air exit velocity at the blast nozzle and evaluates safety limits based on substrate selection.
Calculates typical annual savings when shifting from single-use mineral slag/bead blasting to highly recyclable plastic media.
Predicts replacement rates of plastic media inside cyclone reclaimer systems.
In-depth insights, case studies, and field notes straight from our coating engineers.
Why setting pressure limits above 45 PSI damages aluminum panels and strips recycling value.
Read Full Text →A breakdown of Type II (Urea) and Type V (Acrylic) chemical restrictions required for defense contractors.
Read Full Text →Comparing melamine blasting versus chemical solvent solutions for thermoplastic manufacturers.
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