Abstract: In order to address the sustainability and environmental issues associated with conventional HVAC filters, inventive HVAC filters have been developed that are completely biodegradable and compostable and exhibit Minimum Efficiency Reporting Value (MERV) ratings that are superior to conventional HVAC filters. More particularly, it has been discovered that biodegradable electrospun nanofibers can be used to produce biodegradable HVAC filters that exhibit superior filtration performance relative to conventional HVAC filters produced from polypropylene electrostatic media or triboelectric nonwoven media.

Abstract: The present invention generally relates to a dual density air filtration media that comprises a plurality of nanofibers layers formed from nanofibers having different fiber diameters. Due to the presence of these multiple nanofiber layers with different nanofiber diameters, the resulting filtration media of the present invention comprises a gradient density. In particular, the present invention uses a novel combination of two or more layers of nanofibers made via an electrospinning process, wherein the nanofiber layers made up from different fiber sizes are strategically applied to a cellulose or synthetic base material or substrate, to thereby maximize the filtration efficiency and dust holding capacity of the resulting filtration media.

Abstract: The present invention generally relates to washable HVAC filter media. More particularly, the present invention generally relates to washable HVAC filter media comprising an electrospun nanofiber layer disposed between a nonwoven support layer and a pre-filter meltblown layer that may be electrostatically charged. Unlike existing HVAC filter media, the present filter media may be subjected to multiple washings and still maintain its filtration efficiency.

Abstract: The present invention generally relates to a dual density air filtration media that comprises a plurality of nanofibers layers formed from nanofibers having different fiber diameters. Due to the presence of these multiple nanofiber layers with different nanofiber diameters, the resulting filtration media of the present invention comprises a gradient density. In particular, the present invention uses a novel combination of two or more layers of nanofibers made via an electrospinning process, wherein the nanofiber layers made up from different fiber sizes are strategically applied to a cellulose or synthetic base material or substrate, to thereby maximize the filtration efficiency and dust holding capacity of the resulting filtration media.

Abstract: Method and system using near infrared (NIR) spectroscopy for dynamically monitoring and controlling the proportion of resin solids or other additive solids in combination with other ingredients used in continuous production of resin-wood composite articles.

Abstract: Method of use of near infrared (NIR) spectroscopy for quantitative analysis of resin-wood composites, and methods of making engineered wood products using calibrated near infrared (NIR) spectroscopic instrumentation for quantitative analysis of resin-wood composites.