eVent® fabrics Introduces New Membrane Treatment

eVent® fabrics introduces a new supercritical gas-based membrane treatment that further eliminates the need for a PU (polyurethane) coating while increasing performance of its waterproof breathable membranes.
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Continually at the forefront of innovation and technology, eVent® fabrics introduces a new supercritical gas-based membrane treatment that further eliminates the need for a PU (polyurethane) coating while increasing performance of its waterproof breathable membranes.

The new treatment improves on eVent fabric's durability while preserving its inherent open-pore structure and Direct Ventingâ„¢ capacities. Additionally, the new treatment optimizes the membrane's performance at cold temperatures.

Forerunners rely on hydrophilic (water-loving) PU membranes or an added PU coating. Adding PU makes a membrane oleophobic, or oil repellant. While it helps to block oils, the added PU layer also reduces the membrane's capability to move moisture because it must become wet inside for it to transport moisture.

The eVent fabrics membrane has always been completely PU free, making it the only Direct Venting™ membrane among “breathable” peers.

Instead of coating the membrane with PU, eVent fabrics are treated with a patented hydrophobic polymer to achieve oleophobic properties. Utilizing the vast resources of eVent fabric's parent company, General Electric, a new process of application is announced. eVent fabric's oleophobic polymer is applied by means of a supercritical gas treatment, eliminating the use of solvents during the production process

This new technology enables both the gas and polymer to completely penetrate the pores of the eVent fabrics membrane, encapsulating each and every fibril during treatment.

This new process leaves no residue and treats the membrane on a structural level, retaining and enhancing the precious membrane properties. The process of application is patented and the polymer is patented pending.

The switch to eVent fabric's new membrane treatment will take place gradually throughout 2007, and will be seen in the market by 2008.

It's no secret that eVent fabric Waterproof and Windproof technologies have redefined consumer expectations of how breathable a waterproof- or windproof garment, or pair of shoes should be. More than 70 companies are using eVent fabrics technology to define their most core products. Simply stated, with the new membrane technology, eVent fabrics now works even better to let the sweat outâ„¢.

About eVent fabrics:
Entering their seventh year in the outdoor industry, eVent® fabrics has built a strong reputation as the most breathable, highly-functional waterproof laminate technology with a very loyal following. Unlike other laminates on the market, eVent fabrics allow sweat to vent directly to the outside of the garment in one easy step through a process called Direct Venting™ technology. This unique process allows sweat to vent away from the body without condensing on the inside of the fabric, helping to keep the user dry no matter what the activity or conditions. Simply put, eVent fabrics let the sweat out.™

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