Compression-Molded Composite Panel Assembly for Automotive Floor Load Transfer

The patent employs a sandwich structure composed of a cellular core material (such as foam or honeycomb) bonded between two outer skins. This composite construction provides high load-bearing capacity relative to the weight, as the cellular core efficiently resists compressive loads while using minimal material. The outer skins carry tensile and compressive stresses, allowing the core to be optimized for buckling resistance rather than pure compression strength.

The cellular core material features a porous or hollow structure with cells distributed throughout its volume. This porosity significantly reduces the density and weight of the core while maintaining its ability to resist compressive forces through cell wall buckling and bending. The cellular structure provides an optimal balance between weight reduction and load-bearing capacity for the core portion of the sandwich panel.

The patent integrates the edge closure function directly into the sandwich panel manufacturing process itself, rather than adding it as a separate post-processing step. The molding operation that forms the sandwich panel simultaneously creates sealed edges, potentially through the design of the mold cavities or by incorporating edge-sealing features into the panel structure. This merging of functions eliminates the need for separate edge-closure operations, reducing manufacturing time and complexity while maintaining effective moisture protection.

The sandwich panel structure is designed to provide its own edge sealing and protection as an inherent feature of the manufacturing process. The molding operation automatically creates sealed edges through the confinement of the core material between the mold halves or through integrated seal features, allowing the panel to seal itself without requiring additional components or operations. This self-service approach reduces manufacturing steps while ensuring reliable edge protection.

The patent incorporates attachment features, recesses, or shaping elements directly into the sandwich panel during the initial molding operation, rather than attaching separate components in subsequent steps. The mold cavities are designed to form the desired underside geometry, including any recesses for receiving fasteners or features that promote co-planarity with surrounding structures. This preliminary action during molding eliminates the need for separate attachment operations and reduces manufacturing complexity.

The sandwich panel is designed to perform multiple functions simultaneously: it provides structural load-bearing capacity, aesthetic appearance through its outer skins, and integration features for attachment to surrounding structures. The molding process creates a multi-functional component that combines structural and aesthetic roles, as well as incorporating attachment features, thereby reducing the need for separate specialized components and simplifying the overall manufacturing process.