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    • 8. 发明授权
    • Method of using a chilled trough for producing slabs of polyurethane foam
    • 使用冷却槽生产聚氨酯泡沫板的方法
    • US5512222A
    • 1996-04-30
    • US404413
    • 1995-03-15
    • Edward SabolThomas Cushman
    • Edward SabolThomas Cushman
    • B29C44/46B29C44/20
    • B29C44/462Y10S264/84
    • An apparatus and method for producing a continuous slab of polymeric foam uses an open topped trough with an upper pour plate adjacent to a moving conveyor. A liquid reactant foam mixture is continually introduced into the bottom of the trough and allowed to rise and partially expand until the mixture flows over the pour plate and onto a moving conveyor to complete its expansion and cure as it is conveyed. The inner surfaces of the trough are chilled to reduce the reaction rate of the liquid foam mixture and thereby prevent the undesired build-up of cured foam on the surfaces of the trough. The chilled trough may be formed from a plurality of hollowed panels fitted with interior baffles to define inner fluid passageways. A chilled fluid, such as water, is pumped through the passageways. Longer production runs with fewer defects are advantages of this apparatus and method.
    • 用于生产聚合物泡沫的连续板坯的设备和方法使用具有与倾倒板相邻的移动输送机的敞开的顶部槽。 液体反应物泡沫混合物被连续地引入槽的底部并允许升高并部分地膨胀,直到混合物流过倾倒板并移动到移动的输送机上,以在其被输送时完成其膨胀和固化。 槽的内表面被冷却以降低液体泡沫混合物的反应速率,从而防止在槽的表面上不期望地堆积固化的泡沫。 冷却的槽可以由装配有内部挡板的多个中空板形成以限定内部流体通道。 诸如水的冷却液体被泵送通过通道。 更长的生产运行缺点较少,这种设备和方法的优点。