Abstract: A composite part, in particular a vehicle panel such as a car body attachment part, a movable glass cover, or an interior space lining, comprises a foamed plastic layer and an elongated, extruded plastic body. The elongated, extruded plastic body enhances stability of the car body attachment part, is reinforced with fibers, and is embedded in the plastic layer at least in sections.

Abstract: The invention relates to a composite component and a method of producing such composite component, in particular a car body attachment part for a motor vehicle, which includes an outer skin that is defined by an outer skin foil associated with the motor vehicle. An inner layer made of plastic is applied to a rear side of the outer skin foil by providing a foamed or injection-molded backing. A mounting piece is disposed in a depression of the outer skin foil and is anchored therein. An intermediate foil is situated between the mounting piece and the outer skin foil and prevents, at least in sections, any direct contact between the mounting piece and the outer skin foil.

Abstract: A method of producing a foamed part, in particular a car body attachment part for a motor vehicle, includes the following steps. A foaming tool is provided that includes a tool bottom part and a tool upper part. An outer skin is placed in the tool bottom part and an expandable material is applied. The foaming tool is closed, with at least one portion of the outer skin being located in a gap between the tool bottom part and the tool upper part. After the foaming process, during opening of the foaming tool, the outer skin is trimmed by the foaming tool itself. The invention further relates to a foaming tool for applying such a method.

Abstract: A car body attachment part, when mounted to a motor vehicle, has an inner side comprising a surface portion, and an opposite, visible outer side. A method for producing the car body attachment part includes the following steps. A foaming mold is provided that includes a first tool mold die and a second tool mold die. The inner side of the car body attachment part is associated with the first tool mold die, and the outer side is associated with the second tool mold die. Next, a protective foil is inserted in the first tool mold die, at least in a region of the surface portion. The protective foil is provided with a foam backing so that the inner side in the region of the surface portion is constituted by the protective foil. The protective foil is connected with the foam backing such that the protective foil can be peeled off from the foam backing in a non-destructive manner. The car body attachment part is particularly useful as a roof module mounted to a roof of a motor vehicle.

Abstract: A vehicle body attachment part for a motor vehicle, in particular a roof module, comprises a large-area outer skin having first and second large-area outer skin portions that are formed from different materials. The vehicle body attachment part also includes a rear carrier layer that receives the outer skin. The first large-area outer skin portion is formed by a foil and the rear carrier layer is formed by providing the foil with a foamed backing. The carrier layer integrally extends under the second large-area outer skin portion, which is subsequently fastened to the rear carrier layer.

Abstract: The invention relates to a composite component and a method of producing such composite component, in particular a car body attachment part for a motor vehicle, which includes an outer skin that is defined by an outer skin foil associated with the motor vehicle. An inner layer made of plastic is applied to a rear side of the outer skin foil by providing a foamed or injection-molded backing. A mounting piece is disposed in a depression of the outer skin foil and is anchored therein. An intermediate foil is situated between the mounting piece and the outer skin foil and prevents, at least in sections, any direct contact between the mounting piece and the outer skin foil.

Abstract: A laminated component, in particular a vehicle body part, includes a substrate and a plastic layer disposed on the substrate. Shrinkage-resistant displacement bodies are embedded in the plastic layer to prevent shrinkage of the plastic layer when it is reacted and cured.

Abstract: A foaming mold for forming a composite part has a first mold part and a second mold part. The first mold part and the second mold part delimit a mold cavity between them. A vent groove is disposed in one of the mold parts and collects any gas trapped in the mold cavity. A plurality of overflow channels are provided between the vent groove and the mold cavity.

Abstract: A foaming tool has a first mold part, a second mold part, and at least two cavities for producing at least two composite parts from a substrate. A compensation zone is disposed between the two cavities and is adapted to accommodate a relief zone formed on the substrate. The substrate has a first component section and a second component section adapted to be arranged in the cavities of the foaming tool. The first and second component sections receive a foamed backing of an expandable material to form the composite parts. The substrate has a relief zone between the first and second component sections to handle any stresses on the substrate and prevent surface defects in the substrate.

Abstract: A composite part, such as a mount-on car body panel, is manufactured as a foil part covered by a protective foil. The foil part and protective foil are both inserted into a foam die. Before the insertion, the protective foil is reworked on an outer side of the protective foil to remove rough areas. The resulting composite part has improved surface characteristics due to the reworking step.

Abstract: A vehicle body panel and a method for manufacturing a vehicle body panel includes a thin plastic film that is applied to a deep-drawn, film-like exterior covering before a back-foamed layer is applied to the exterior covering. When the film hardens, it improves the structural stability of the film, preventing indentations due to varying levels of shrinkage of the back-foamed layer from becoming visible on the exterior covering.