Flexurally rigid flat composite component for automobile, e.g. sliding roof, comprises reinforced core layer sandwiched between polyurethane layers containing embedded fibrous layer

• Main Authors: SCHWAIGHOFER, RALF, SCHAETZLER, WALTER, OERKE, PHILLIP, POLLAK, MARTIN, HEUSER, PETRA, GLASL, SEBASTIAN, NOLLES, DENNIS
• Format: Patent
• Language: English; German
• Published: 21.08.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

In a flat composite component for an automobile, comprising a sandwich arrangement (13) of a core layer (12) between two covering layers (16, 16') of polyurethane (PU) containing an embedded fibrous layer, at least one reinforcing element of profile type is embedded in the core layer. Independent claims are included for two methods for producing flat composite components for automobiles, involving: (1) (a) producing a core layer with at least one indentation for the profile-type reinforcing element, (b) locating the reinforcing element in the indentation, (c) producing a sandwich arrangement of the core layer between two fibrous layers, (d) spraying both sides of the sandwich arrangement with PU, (e) pressing the assembly in a mold, so that the PU hardens and forms the geometry of the component and (f) demolding the product; or (2) (a) producing a sandwich arrangement (13) of a thermosetting resin foam between two fibrous layers, (b) spraying both sides of the assembly with PU, (c) pressing the assembly in a mold, so that the PU hardens and forms the geometry of the component and (d) demolding the product. Es wird ein flächiges Verbundbauteil eines Fahrzeugs, umfassend eine Sandwich-Anordnung mit einer Kernschicht (24), die zwischen zwei Deckschichten angeordnet ist, die unabhängig voneinander jeweils als Polyurethanschicht ausgebildet sind, in die eine Faserschicht (28, 28') eingebettet ist. Erfindungsgemäß ist zur Erhöhung der Biegesteifigkeit in die Kernschicht (24) mindestens ein profilartig ausgebildetes Verstärkungselement (22) eingebettet.