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    • 1. 发明申请
    • Process and device for forming dense layers in a gypsum slurry
    • 用于在石膏浆中形成致密层的方法和装置
    • US20040134585A1
    • 2004-07-15
    • US10703418
    • 2003-11-10
    • Lafarge Platres
    • Bruno CallaisPaul JallonJean Louis LaurentMichel Rigaudon
    • B32B031/00
    • B28B19/0092B28B17/023B28B19/0015
    • A process for manufacturing plasterboard and a plasterboard manufacturing unit are provided, the process including feeding hydratable calcium sulphate and water into a first mixer (2) and into a second mixer (3); feeding in a facing (5); preparing a first gypsum slurry in the first mixer (2); preparing a second gypsum slurry in the second mixer (3); applying the first slurry onto the facing and forming a crude surface layer; applying the second slurry onto the crude surface layer and forming a crude core layer with a density lower than that of the crude surface layer; forming a plasterboard; hydrating and drying the board. This process allows the formation of the different layers of gypsum to be controlled independently.
    • 提供了一种用于制造石膏板和石膏板制造单元的方法,所述方法包括将可水合的硫酸钙和水加入到第一混合器(2)中并进入第二混合器(3)中; 喂食面(5); 在第一混合器(2)中制备第一石膏浆料; 在第二混合器(3)中制备第二石膏浆料; 将第一浆料施加到面上并形成粗糙表面层; 将第二浆料施加到粗表面层上并形成密度低于粗表面层的粗芯层; 形成石膏板; 水化和干燥板。 该过程允许独立地控制不同层石膏的形成。