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    • 1. 发明授权
    • Verfahren zur Herstellung von Sandwichbauteilen sowie Presse
    • 一种夹心板的制备方法以及新闻
    • EP1922213B1
    • 2012-05-16
    • EP06777040.4
    • 2006-08-23
    • Airbus Deutschland GmbH
    • HESSE, KarstenBUSCH, Heinz-Peter
    • B32B3/12B32B37/00
    • B32B37/0007B32B37/146
    • The invention relates to a method for producing sandwich components comprising an open core structure (2) and cover layers (1, 3) that are applied to both sides, said layers (1, 3) being formed using a curable plastic material and the sandwich component being cured under pressure in a closed device. According to the invention, a filling gas, in particular nitrogen or air, is introduced into the core structure (2) prior to the at least partial solidification of the cover layers (1,3) and a filling gas pressure p Filling gas is selected that is less than or equal to the working pressure p Working of the closed device, notably to prevent to a great extent the formation of sink marks in the cover layers (1, 3). The control of the filling gas pressure p Filling gas of the filling gas in the core structure (2) in an appropriate manner during the curing process of the sandwich component enables sandwich components with almost optimum surface characteristics to be produced, in particular without the formation of sink marks in the cover layers (1, 3) of the core structure (2), (which are often caused by a negative pressure that occurs in the cells of the core structure (2) as a result of the cooling process). This obviates the need for the previously required complex mechanical after-treatment of the sandwich component, for example by grinding or filling. The invention also relates to a press for carrying out said method.
    • 2. 发明公开
    • VERFAHREN ZUR HERSTELLUNG VON SANDWICHBAUTEILEN SOWIE PRESSE
    • 一种夹心板的制备方法以及新闻
    • EP1922213A1
    • 2008-05-21
    • EP06777040.4
    • 2006-08-23
    • Airbus Deutschland GmbH (HRB 43527)
    • HESSE, KarstenBUSCH, Heinz-Peter
    • B32B3/12B32B37/00
    • B32B37/0007B32B37/146
    • The invention relates to a method for producing sandwich components comprising an open core structure (2) and cover layers (1, 3) that are applied to both sides, said layers (1, 3) being formed using a curable plastic material and the sandwich component being cured under pressure in a closed device. According to the invention, a filling gas, in particular nitrogen or air, is introduced into the core structure (2) prior to the at least partial solidification of the cover layers (1,3) and a filling gas pressure p Filling gas is selected that is less than or equal to the working pressure p Working of the closed device, notably to prevent to a great extent the formation of sink marks in the cover layers (1, 3). The control of the filling gas pressure p Filling gas of the filling gas in the core structure (2) in an appropriate manner during the curing process of the sandwich component enables sandwich components with almost optimum surface characteristics to be produced, in particular without the formation of sink marks in the cover layers (1, 3) of the core structure (2), (which are often caused by a negative pressure that occurs in the cells of the core structure (2) as a result of the cooling process). This obviates the need for the previously required complex mechanical after-treatment of the sandwich component, for example by grinding or filling. The invention also relates to a press for carrying out said method.