Method for producing a flat semi-finished product from a fiber composite material and flat semi-finished product

A method for producing a flat semi-finished material of a fiber-reinforced composite plastic having fibers and at least one thermoplastic matrix material, which comprises the steps of:

• isolating the fibers, selected from the group consisting of finite carbon fibers, carbon fiber bundles and a mixture of said finite carbon fibers and said carbon fiber bundles, from waste or used parts containing carbon fibers;
• blending the fibers with thermoplastic non-carbon fibers resulting in a mixture being laid down and oriented in a sheet in a carding operation resulting in a fiber web having a targeted orientation of the fibers, wherein for the targeted orientation of the fibers longitudinally in the carding operation, adding the thermoplastic non-carbon fibers in a mixing ratio and/or with a fiber geometry, such that a fiber anisotropy in a range of at least 1:2 is established in the fiber web;
• performing a lining operation on the fiber web to yield a web layering and after the lining operation influencing the fiber anisotropy of composite strengths and/or composite stiffnesses by an additional drawing of a nonwoven;
• and
• pressing the fiber web to form a sheet material under an influence of heat.