PILE PRODUCT WITH UNIDIRECTIONALLY INCREASED STRENGTH FOR PRODUCING CFRP COMPONENTS

摘要

A semi-finished product includes a partly reinforced assembly (11) of a nap layer (12, 13, 14, 15) made of a non-woven fiber nap (16) and an additional fiber layer (21, 22), stacked face-to-face. The nap layer includes carbon fibers, aramid fibers, or mineral fibers, such as glass or basalt fibers, having a preferred orientation (VR). The assembly is produced by a layering process. The nap layer and the fiber layer are free of additional macro proppants. The additional fiber layer includes a web thread group (23, 24) of individual adjacent threads. The fiber layer includes carbon fibers, aramid fibers, or mineral fibers, such as glass or basalt fibers and has an exclusive fiber orientation (FA). The nap product is partly reinforced by local connection points between the fibers of the different layers. The semi-finished product has a high directional strength and a high maximum drapability at the same time.