PRODUCTION OF THERMALLY MOLDABLE COMPOSITE FIBER MATERIAL

摘要

PURPOSE:To obtain a thermally moldable composite fiber material capable of producing an inorganic fiber mat having little variation of mechanical strength and especially improved flexural strength. CONSTITUTION:This thermally moldable composite fiber material is produced by applying needle punching on an inorganic fiber mat and impregnating the punched inorganic fiber mat with a thermoplastic resin in a fused state. The needle punching is performed using the following needle: the diameter (D) of a blade 10 is 0.4-0.65mm; the total of kick-up height (H) and stroke depth (S) of a barb 11 is 0.02-0.18mm; and the space (L) between barbs 11 in the same line is 4-8mm.