PREPREG FOR LASER BORING AND METHOD FOR STORING THE SAME

摘要

PROBLEM TO BE SOLVED: To allow making of fine holes by laser irradiation at prepreg stage, related to an aramide fiber nonwoven fabric base material prepreg. SOLUTION: Related to an aramide fiber nonwoven fabric prepreg, a volatile component (including water content) contained in the prepreg is 1.5 wt.% or less. The water content contained in the prepreg is preferred to be 0.6 wt.% or less. The prepreg is stored in an atmosphere of 25 deg.C or below with humidity 50% or less.