MD+DI Online is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Drying Systems Improve Production

Article-Drying Systems Improve Production

Originally Published MPMN June 2005


Drying Systems Improve Production of Hydrophilic Foams

Materials are heated and dried evenly and quickly

Susan Wallace

Macrowave systems heat and dry hydrophilic foams evenly throughout their entire thicknesses.

Foam-drying systems apply radio waves to foam webs or buns up to 4 ft thick at a frequency of 40.68 MHz. This process rapidly removes water without the quality control problems associated with conventional drying methods. Those problems include surface discoloration, cupping caused by nonuniform shrinkage, and surface hardening.

The Macrowave units from Radio Frequency Co. (Millis, MA) gently heat and uniformly dry hydrophilic foams evenly throughout their entire thickness. They can also dry water-based glues used in the construction of foam laminations up to several feet thick. Because the Macrowave energy will preferentially heat materials where the water content is the highest, the wet glues are heated and dried without directly heating the cured foams, thus avoiding overheating.

The company offers process development laboratory services to assist clients in developing the most efficient means to accomplish their foam-processing objectives. The laboratory is equipped with a simulator that can apply radio-frequency and conventional heat to simulate actual production conditions and provide a computerized record of all process parameters to facilitate scale-up.

Radio Frequency Co.
150 Dover Rd.
Millis, MA 02054
P: 508/376-9555
F: 508/376-9944
E: [email protected]

Copyright ©2005 Medical Product Manufacturing News

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.