Patent No. EP2392453 (titled "Panel Of A Vehicle Load Compartment") was filed by Schmitz Cargobull on Jun 1, 2010. The application was issued on Sep 13, 2023.
A commercial vehicle box body panel comprises a foamed plastic core layer situated between two covering layers, at least one of which is sheet metal. To reduce denting and bubbling, a composite layer consisting of unfoamed plastic and a fiber material is positioned between the core and the sheet metal covering. The fiber material is uniformly distributed as a disperse phase within a continuous plastic matrix. The composite and core layers are bonded without additional adhesive; they are either applied wet-on-wet and subsequently cured, or the core material is applied to a pre-cured composite layer and then cured. The composite layer may be localized to high-stress zones or vary in thickness to optimize thermal insulation and mechanical strength.

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