Compressed air Micro Dryers from Dri-Air Industries, E. Windsor, Conn., are now available with 12 oz (340 g) and 32 oz (900 g) capacity hoppers in addition to previously available 3-lb hopper. Said to be ideal for medical-grade resins, these dryers provide a continuous stream of low-dew point air and are available for compressed air or nitrogen drying. Compressed air dryers use a Dri-Pak membrane to assure dew points of -40 F. Nitrogen dryers use bottled nitrogen or a factory nitrogen generator to achieve dew points of -80 F, while also removing oxygen (in the drying process) as required for certain extremely oxygen or moisture sensitive resins.
Clear-sight hoppers use butyrate plastic exteriors for insulation and are lined with Pyrex glass to eliminate contamination and for a clear view of material levels. All other contact surfaces are stainless steel, which is necessary for medical molding.
These unique hoppers have attached heaters that ensure precise temperature control from 80 F to 400 F without the need for cooling water or special high-temperature process hoses. Their small size allows direct mounting on small extruders, micro molders, and 3-D printers without concern for moisture regain at drying levels below 50 ppm.
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