Patz Materials and Technologies has developed, produced and tested, as part of the Phase-I SBIR, a new form of composite cellular core material, named Interply Core, this new product is a major step forward in composite core technology. The Interply Core was physically tested to have twice the compressive strength compared to the same density aramid paper and glass fabric core presently available to the aerospace industry. In addition, the new core material has the ability be utilized without any change in the composite aerospace structures manufacturing processes. The Phase II project will be to develop the production equipment to make significant quantities of Interply Core and then build and test different material iterations to quantify all parameters of Interply Core's abilities. At the end of phase II the rotorcraft, as well as other aerospace industries, will have a new material to significantly lower weight without changing platform production methodologies.