the very stringent fire smoke and toxicity norms of the industry additionally the product also reduces the thermal load has very high heat resistance and is corrosion resistant the use of this product is not limited to flat profiles but can also be used to mould double curved or other three dimensional profiles application_number US 201414315188 A description the system according to a preferred embodiment of the present disclosure comprises a structural panel comprising a honeycomb core with glass reinforced phenolic skin and method of producing the same referring to fig1 an exploded perspective view of a portion of an exemplary panel 10 the construction of this panel is typically glass reinforced phenolic skin layers comprising two fabric layers 12 14 bonded via use of bonding medium 16 comprising a phenolic adhesive to an aramid honeycomb core 20 when assembled the layers 12 14 and bonding medium 16 form a layer 18 typically 0 5 to 2 mm in thickness the honeycomb core has uniform cell size of 5 15 mm the bonding medium is an in house formulated glue using catalyzed liquid phenolic resin mixed with a pyrogenic oxide such as fumed silica and other additives in the range of 0 2 to 10 this gives the product its thixotropy low moisture absorption and optimizes its rheological properties the phenolic skin layers use glass fibers to provide strength and the resin of the phenolic skin provides excellent fire resistance and low smoke and toxicity benefits this bonding medium has the.