Long-fiber nonwoven textile preforms including Long-fiber web layer and method of manufacturing the same and composite material including Long-fiber nonwoven textile preforms and method of manufacturing the same

摘要

The present invention relates to a long-fiber nonwoven fabric preform comprising a long fiber web layer oriented in a discontinuous random direction and a method of producing the same, and more particularly to a long-fiber nonwoven fabric preform having a first nonwoven fabric; A long fibrous web layer oriented in a discontinuous random direction on the first nonwoven fabric; And a second nonwoven fabric laminated on the long fiber web layer. The long fibrous nonwoven fabric preform according to the present invention has a long fiber web layer oriented discontinuously in the random direction and has the effect of improving the isotropy and physical properties, and in producing a composite material comprising the long fibrous nonwoven fabric preform having such an effect Accordingly, it is possible to provide a composite material having various physical properties such as light weight, high strength, high rigidity, and impact resistance.