Fibre reinforcement of reactive foams obtained by a moulding foam method

A molding made of reactive foam, wherein at least one fiber (F) is with a fiber region (FB2) arranged inside the molding and surrounded by the reactive foam while a fiber region (FB1) of the fiber (F) projects from a first side of the molding and a fiber region (FB3) of the fiber (F) projects from a second side of the molding, wherein the reactive foam has been produced by mold foaming process, wherein the fiber (F) has been introduced into the reactive foam at an angle α of 10° to 70° relative to the thickness direction (d) of the molding and wherein the molding is obtained by a process comprising the steps a) to f):

• a) optionally applying at least one layer (S2) onto at least one side of the reactive foam,
• b) producing one hole per fiber (F) in the reactive foam and optionally the layer (S2), wherein the hole extends from a first side to a second side of the reactive foam and optionally through the layer (S2),
• c) providing at least one fiber (F) on the second side of the reactive foam,
• d) passing a needle from the first side of the reactive foam through the hole to the second side of the reactive foam and optionally passing the needle through the layer (S2),
• e) securing at least one fiber (F) to the needle on the second side of the reactive foam and
• f) returning the needle along with the fiber (F) through the hole, so that the fiber (F) is with the fiber region (FB2) located inside the molding and surrounded by the reactive foam while the fiber region (FB1) of the fiber (F) projects from a first side of the molding or optionally from the layer (S2) and the fiber region (FB3) of the fiber (F) projects from a second side of the molding, wherein over 30% of the total surface area of the molding is closed;
• wherein the reactive foam is based on a polyurethane, a polyurea or a polyisocyanate;
• and
• wherein the density increases from the core of the reactive foam to the surface thereof.