Controlled Porosity Membrane is a  composite material of fiberglass and PTFE . CPM is .014” thick, porous, white, translucent, non-burning, highly flexible, tear and crease resistant, super strong and is acoustically absorptive.  CPM is used in both Industrial and Architectural Markets.

Industrial Grade CPM is valued for its strength, flexibility, high temperature range (550F), consistency of texture & porosity, excellent release and its resistance to tear & crease.  In Industrial applications, CPM is often used on heat sealing equipment as the release media.  The porous surface of CPM allows air to flow under pressure and the PTFE impregnation allows for a slippery release surface.  Unlike coated PTFE/Fiberglass materials, CPM is highly flexible, much stronger  and can be wrapped around curved and cornered shapes.  CPM has a very consistent surface pattern which can embossed into various materials where a pattern is desired in the finished good.

Architectural Grade CPM is used as structural liners in Sheerfill® architectural membrane systems.  CPM is highly valued for its sound dampening characteristics.  CPM not only serves to attenuate sound but also to enhance thermal characteristics of fabric roof systems.  Specifications and data related to use of CPM with respect to permanent building codes is available and consistent with Sheerfill® architectural membrane.  Data related to Solar Transmission & Reflectance, Burning Characteristics, Incombustibility, Flame Resistance and Sound Absorption are available.  CPM is mostly used for indoor architectural use.