The invention relates to a method for forming an instrument board assembly. The method comprises the steps that the local surface, at least partially covering an air bag door area, of a movable mold is relatively and fixedly provided with a thin film formed by a polypropylene composition; die assembly is carried out, polypropylene thermoplasticity materials are injected into a mold of an instrument board body, and the polypropylene composition and the polypropylene thermoplasticity materials are fused together on a contact area; die sinking is carried out, the thin film is embedded into the back face of the instrument board body, and a whole instrument board is formed by the thin film and the instrument board body; meanwhile, flush air bag door weakening lines are formed on the instrument board body and the thin film; an air bag door made of the polypropylene thermoplasticity materials is provided; and the air bag door is welded to the instrument board body and at least part of the thin film, and the polypropylene composition and the polypropylene thermoplasticity materials are fused on the contact area. The invention further relates to the instrument board assembly. The design requirement of the automobile instrument board for a complex modeling structure is met better; meanwhile, the complex production process requirement of the instrument board is met; and the safety of the instrument board is improved.
Method for forming instrument board assembly and instrument board assembly obtained with method
2015-11-25
Patent
Electronic Resource
English
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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