Xerium granted patent for EnerVent roll cover venting technology

P&PC Staff
April 19, 2017
By P&PC Staff
Apr. 18, 2017 - Xerium Technologies, a producer of fabrics and roll covers used in the production of paper and packaging, nonwovens, and other industrial manufacturing processes, has announced the US Patent and Trademark Office (USPTO) has granted patent number 9,488,217 for its EnerVent roll cover venting technology.

First introduced in 2014, EnerVent’s technology is proven to reduce energy consumption, says Xerium, as well as 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 portion of the void volume to be unavailable thereby preventing the grooves to remove water effectively. This tendency increases in softer roll covers, and cover swelling can accelerate the effect leading to significant efficiency loss in water removal.” Xerium says EnerVent is engineered with wider grooves and shallower depths creating greater groove wall stability and void volume longevity.

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