Abstract: A honeycomb sandwich panel of synthetic paper. The synthetic paper includes: between 20 and 75 wt. % of structural fibers and between 25 and 80 wt. % of bonding fibers. The structural fibers are poly(p-phenylene telephthalamide) (PPTA) fibers. The bonding fibers are fibrids of the PPTA. The structural fibers and the bonding fibers are shaped by a wet-forming papermaking method by a paper machine to yield the synthetic paper. The synthetic paper is coated, stacked, pressed, stretched, shaped, impregnated, cured, and sliced to form the honeycomb sandwich panel.

Abstract: Synthetic paper, including: between 10 and 90 wt. % of structural fibers, and between 90 and 10 wt. % of bonding fibers. The structural fibers are poly(p-phenylene telephthalamide) (PPTA) fibers having a fineness of between 1 and 2 d, and a length of between 3 and 10 mm. The bonding fibers are fibrids or a pulp of the PPTA. The structural fibers and the bonding fibers are shaped by a wet-forming papermaking method, and hot rolled to form the synthetic paper.