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Plastic Media Blasting (PMB) is a dry abrasive blasting process, designed to replace chemical paint stripping operations and conventional sand blasting. This process uses soft, angular plastic particles as the blasting medium. ethyl methyl ketone, 2-butanone, MEK, CH3COCH2CH3;

PMB is performed in a ventilated enclosure such as a small cabinet (glove box), a walk-in booth, a large room, or airplane hanger. The PMB process blasts the plastic media at a much lower pressure (less than 40 psi) than conventional blasting. PMB is well suited for stripping paints, since the low pressure and relatively soft plastic medium have minimal effect on the surfaces beneath the paint. dimethylketone, 2-propanone, CH3COCH31-butanol, butyric alcohol,

After blasting, the media is passed through a reclamation system that consists of a cyclone centrifuge, a dual adjustable air wash, multiple vibrating classifier screen decks, and a magnetic separator. In addition, some manufacturers provide dense particle separators as a reclamation system. The denser particles, such as paint chips, are separated from the reusable blast media, and the reusable media is returned to the blast pot. Typically, media can be recycled ten to twelve times before it becomes too small to remove paint effectively. Waste material consists of blasting media and paint chips. The waste material may be classified as a RCRA hazardous waste because of the presence of metals. An alternative solution to handling a potential hazardous waste is to locate a vendor that would "lease" the blast media to the base and then recycle the media to recapture the metals. CH3(CH2)2CH2OH; plumbum, Pb; Cr; carboxyic acid

Plastic media are manufactured in 6 types and a variety of sizes and hardnesses. A military specification (MIL-P-85891) has been developed for plastic media. The specification provides general information on the types and characteristics of plastic media. The plastic blasting media types are:

Type I Polyester (Thermoset)

Type II Urea formaldehyde (Thermoset)

Type III Melamine formaldehyde (Thermoset)

Type IV Phenol formaldehyde (Thermoset)

Type V Acrylic (Thermoplastic)

Type VI Poly(allyl diglycol carbonate) (Thermoset)
 
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