SANDWICH COMPOUND ELEMENT WITH IMPROVED MECHANICAL PROPERTIES AND METHOD FOR MANUFACTURING SAME

• Main Authors: BÜCHELE, Michael, ROERS, Rolf, RIPPEL, Marc, LÖVENICH, Catherine, SCHINDLER, Walter, PFEIFFER, Lars
• Format: Patent
• Language: English; French; German
• Published: 20.11.2019
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The sandwich composite element comprises a first cover layer (10), a second cover layer (11), a polyurethane foam core body (12) arranged between the first and second cover layers, and a bottom layer for mechanical reinforcement of composite elements arranged between the foam core body and one of the cover layers. The first cover layer and/or the second cover layer is formed as a metal sheet such as a steel sheet or an aluminum sheet. The sandwich composite element comprises a first cover layer (10), a second cover layer (11), a polyurethane foam core body (12) arranged between the first and second cover layers, and a bottom layer for mechanical reinforcement of composite elements arranged between the foam core body and one of the cover layers. The first cover layer and/or the second cover layer is formed as a metal sheet such as a steel sheet or an aluminum sheet. The bottom layers have a bulk density that is 2.5 times higher than a bulk density (100 kg/m 3>) of the polyurethane foam core body, and a thickness, which corresponds to 10% of a thickness of the sandwich composite element. The thickness of the sandwich composite element is 100 mm. The polyurethane foam core body and the bottom layer consist of a foaming reaction mixture. An adhesive layer is arranged between the cover layers and the bottom layer. An independent claim is included for a process for preparing a sandwich composite element.