Xerium wins patent for enerVent

Xerium, Youngsville, NC, announced recently that the US Patent and Trademark Office has granted patent number 9,488,217 for its EnerVent roll cover venting technology, first introduced in 2014.

Xerium says that EnerVent’s unique technology is proven to reduce energy consumption, improve drying rates and increase production output for machines producing tissue, paperboard and packaging, and graphical papers.

“Conventional roll cover venting products feature narrow grooves that are inherently ineffective and become even more ineffective with age, with softer cover materials, or under higher loads,” said Bill Butterfield, EVP and CTO of Xerium. This inherent narrowing causes the bottom of the void to be unavailable and prevents the grooves from removing water effectively. “This tendency increases in softer roll covers and cover swelling can accelerate the effect leading to significant efficiency loss in water removal,” said Butterfield.

EnerVent is engineered with wider grooves and shallower depths creating greater groove wall stability and void volume longevity. EnerVent covers remain effective under load, with softer covers and throughout the cover life, creating optimal running conditions. The technology is available in rubber and polyurethane covers, supplied only by Xerium.

According to Butterfield, “the Ener- Vent technology is creating benefits approaching, or in excess of, $1 million in energy savings and production gains for several customers.”

Xerium Technologies, Inc., www.xerium.com

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