Patent ID: 7311960
Filing Date: 2007-12-25
Classification: B32B,C03C,Y10T

Abstract:
1. A prepreg of a honeycomb sandwich structure precursor comprising: a honeycomb core; a stiffness-treated prepreg ply comprising: a second prepreg ply selected from the group consisting of a stiffness-treated prepreg ply and an untreated prepreg ply, where the untreated prepreg ply comprises a curable resin system and an untreated fabric, interposed between the honeycomb core and the stiffness-treated prepreg ply; where the stiffness-treated prepreg ply exhibits a frictional resistance to the second prepreg ply greater than the frictional resistance between two untreated prepreg plies disposed against one another, so as to enhance resistance to core crush when autoclave pressures are raised to decrease void content of a honeycomb core during fabrication of a honeycomb core structure from the honeycomb core structure precursor.