US Patent 10232595 Aramid honeycomb fiber paper and preparation method thereof

The present invention disclose an aramid honeycomb fiber paper and a preparation method thereof. The aramid fibre honeycomb fiber paper comprises a top layer aramid paper, a base layer aramid paper, and a bottom layer aramid paper composited sequentially, wherein the thickness sum of the top layer aramid paper and the bottom layer aramid paper is less than the thickness of the base layer aramid paper; a plurality of first protrusions and second protrusions arranged at intervals are arranged on a reverse side of the top layer aramid paper; The present invention has good flame retardancy, high tearing strength, and high bond strength, is not easy to layer and fracture, and has high porosity factor, good air permeability, and light weight.