 Lydall, Inc. LDL, a leading manufacturer of value-added engineered materials and specialty filtration solutions that promote a cleaner, safer and quieter world, today announced an investment in an additional fine fiber meltblown asset in response to the exponential increase in domestic and global demand of specialty filtration media for face masks. This new production line will enable Lydall one of the few American manufacturers capable of producing high-quality fine fiber meltblown filtration media for N95, surgical and medical face masks to significantly increase its supply and help alleviate the shortage of meltblown materials, both in the U.S. and internationally. 