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    Post processing three-dimensional objects formed by selective deposition modeling
    2.
    发明授权
    Post processing three-dimensional objects formed by selective deposition modeling 有权
    通过选择性沉积建模形成后处理三维物体

    公开(公告)号：US07285237B2

    公开(公告)日：2007-10-23

    申请号：US10815510

    申请日：2004-04-01

    申请人： Kenneth J. Newell ,  Stephen A. Ruatta ,  John S. Stockwell

    发明人： Kenneth J. Newell ,  Stephen A. Ruatta ,  John S. Stockwell

    IPC分类号： B29C71/00 ,  B29C71/02

    CPC分类号： B29C64/40 ,  B29C64/20 ,  B33Y40/00

    摘要： A method for removing supports from a three-dimensional objected formed by selective deposition modeling. The three-dimensional object is formed from a curable phase change material and the supports are formed from a non-curable phase change material. The curable phase change material contains between about 5% to about 25% of a non-reactive wax in order to achieve the desired phase change characteristics of the material. When removing the supports with heat, discoloration undesirably occurs in the three-dimensional object as the non-reactive wax migrates within the object. The method prevents wax migration by cooling the object slowly past the freezing point of the build material such that a temperature differential no greater than about 5° C. is present within the object. With the preferred build material having a freezing point of about 49.5° C., this is achieved by lowering the temperature between about 62° C. to about 52° C. over a period of between about 5 to about 10 minutes so that the temperature of the regions of the object remain substantially equal as the freezing point is crossed during cooling.

    摘要翻译： 一种通过选择性沉积建模形成的三维物体去除载体的方法。 三维物体由可固化相变材料形成，并且载体由不可固化的相变材料形成。 可固化相变材料含有约5％至约25％的非反应性蜡，以达到所需材料的相变特性。 当用热量去除载体时，随着非反应性蜡在物体内迁移，三维物体中出现不希望的变色。 该方法通过将物体缓慢地冷却到建筑材料的凝固点来防止蜡迁移，使得物体内存在不大于约5℃的温度差。 使用优选的构建材料具有约49.5℃的凝固点，这是通过在约5-约10分钟的时间内将温度降低至约62℃至约52℃来实现的，使得温度 当冷却期间凝固点交叉时，物体的区域保持基本相等。

    Post processing three-dimensional objects formed by selective deposition modeling
    7.
    发明授权
    Post processing three-dimensional objects formed by selective deposition modeling 有权

    公开(公告)号：US06752948B2

    公开(公告)日：2004-06-22

    申请号：US09970727

    申请日：2001-10-03

    申请人： Kenneth J. Newell ,  Stephen A. Ruatta ,  John S. Stockwell

    发明人： Kenneth J. Newell ,  Stephen A. Ruatta ,  John S. Stockwell

    IPC分类号： B29C7100

    CPC分类号： B29C64/40 ,  B29C64/20 ,  B33Y40/00

    摘要： A method for removing supports from a three-dimensional objected formed by selective deposition modeling. The three-dimensional object is formed from a curable phase change material and the supports are formed from a non-curable phase change material. The curable phase change material contains between about 5% to about 25% of a non-reactive wax in order to achieve the desired phase change characteristics of the material. When removing the supports with heat, discoloration undesirably occurs in the three-dimensional object as the non-reactive wax migrates within the object. The method prevents wax migration by cooling the object slowly past the freezing point of the build material such that a temperature differential no greater than about 5° C. is present within the object. With the preferred build material having a freezing point of about 49.5° C., this is achieved by lowering the temperature between about 62° C. to about 52° C. over a period of between about 5 to about 10 minutes so that the temperature of the regions of the object remain substantially equal as the freezing point is crossed during cooling.