Abstract: Marginal zone-reinforced foam moulding, especially for hulls, are produced in situ technique by coating the inner surface of a mould with a viscous, hardenable adhesive or gel-coat; placing a fiber-reinforcing insert into this layer while it is still viscous; laying an airtight flexible film on this insert and sealing it off outside its dimensions; subsequently removing the air present between the mould and the film under suction and simultaneously pressing the reinforcing insert into the layer of adhesive or gel-coat; removing the film; closing the mould; introducing a liquid, expandable reaction mixture into the mould cavity; and removing the foam moulding from the mould on completion of foaming.

Abstract: An article such as a structural member composed of a core of foamed material having bonded thereto for strengthening thereof, a laminate made up of an outer skin and a reinforcing insert. The reinforcing insert comprises at least one mat-loose fiber sheet combination with the mat disposed adjacent the skin and the loose fiber sheet disposed adjacent the foamed core. The material forming the skin penetrates from the skin, at least partially through the insert to an outer portion of the foamed core, and at least through the outermost mat so that the outermost mat is completely embedded in the material forming the skin.