New Solupor® Membrane Application for High Performance Liquid Filtration

MANCHESTER, Conn., Oct. 21, 2013 (GLOBE NEWSWIRE) - Lydall Performance Materials, a division of Lydall, Inc. (NYSE:LDL), and Limburg Filter B.V. announced today that they have co-developed a best-in-class filtration solution for the recovery of fine pigment powder by combining Lydall's Solupor® membrane with Limburg's Leaktite® filtration technology.

Solupor is a porous, durable, chemical resistant, ultra-high molecular polyethylene membrane that produces very high-filtration efficiencies with low pressure loss. Current applications include liquid filtration in medical, biopharmaceutical, and water purification environments.

Leaktite is a newly developed filtration technology suitable for removal of liquids from slurries using a chamber filter press. It was first proven in the filtration of aqueous graphite dispersions followed by many other applications in the chemical industry.

One of the major filtration issues in the recovery of pigments is that traditional filtration technologies require filtrate recycling - or so-called reflux - until a filter cake has been built up, resulting in a relatively inefficient process. By using the specially developed Solupor laminated membrane, the Leaktite filter is now able to provide a single-pass filtration option and increase the efficiency for the recovery of expensive pigments, eliminating the need for reflux.

David Williams, President, Performance Materials at Lydall, said, "A key focus at Lydall is growing our presence in the filtration marketplace through product innovation. Our Solupor product has already shown great promise in helping to solve challenging filtration applications. We are very pleased with the collaboration with Limburg Filter and the resulting innovation that creates a solution to a problem previously unsolved."

Frank Kruip, CEO of Limburg Filter, stated, "We believe the new Solupor technology will further enhance our filtration product offering."

Lydall will be present at the Filtech Exhibition (Hall 1 Stand C4) in Wiesbaden, Germany, October 22-24, 2013, where more information on this innovative solution will be available.

Lydall, Inc. is a New York Stock Exchange listed company, headquartered in Manchester, Connecticut. The Company, with operations in the U.S., France, the Netherlands and Germany and offices in the U.S., Europe, and Asia, manufactures specialty engineered products for the thermal/acoustical and filtration/separation markets. For more information, visit http://www.lydall.com. Lydall® is a registered trademark of Lydall, Inc. in the U.S. and other countries. All product names are trademarks of Lydall, Inc.

For further information:
Limburg Filter
Frank Kruip
Telephone +31-43-4581699
Facsimile +31-43-4582115
www.limburgfilter.com

For further information:
David D. Glenn
Director of Business Development and Investor Relations
Telephone 860-646-1233
Facsimile 860-646-4917
www.lydall.com