公开(公告)号：US06358445B1

公开(公告)日：2002-03-19

申请号：US09319719

申请日：1999-06-10

申请人： Francois M. Casati ,  Patrice Bocquel ,  Michael J. Brown

发明人： Francois M. Casati ,  Patrice Bocquel ,  Michael J. Brown

IPC分类号： B29C4406

CPC分类号： B29C44/0461 ,  B29C44/388

摘要： A process for preparing a multilayered foam article such as an automotive seat is disclosed. A mold is arranged so that the bottom surface of the mold is flat or inclined up to 40 degrees to the horizontal plane. The first liquid foam formulation designed to produce a soft foam is poured into the mold from a mixing head outlet strip-wise across the seating zone of the mold along the line parallel to but near the external wall of the seating zone of the mold. Then, the second liquid foam formulation designed to produce a hard foam is poured into the mold from the same or different mixing head outlet strip-wise across the seating zone of the mold along the line parallel to but nearer to the external wall of the mold than the line of pouring of the first liquid foam formulation. The second liquid foam formulation is then allowed to spread on top of the first liquid foam formulation, the mold is closed and the foames are allowed to rise and cure in the mold. The process produces an article having excellent layered-foam seating area.

摘要翻译： 公开了一种制备诸如汽车座椅的多层泡沫制品的方法。 模具被布置成使得模具的底表面平坦或者倾斜到与水平面成40度。 设计用于生产软泡沫的第一种液体泡沫制剂从混合头出口沿着与模具的座位区域的外壁平行但靠近的线沿着模具的座位区域倾倒入模具中。 然后，将设计用于生产硬质泡沫的第二液体泡沫体制剂从相同或不同的混合头出口沿着与模具的外壁平行但更接近模具的模具横过模具的座位区域注入模具中 比第一液体泡沫配方的倾倒线。 然后将第二液体泡沫体制剂铺展在第一液体泡沫配方的顶部上，关闭模具并使模具在模具中上升和固化。 该方法产生具有优异的层状泡沫休息区的制品。