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    Methods of coating stereolithographic parts
    4.
    发明授权
    Methods of coating stereolithographic parts 失效
    涂布立体光刻部件的方法

    公开(公告)号：US5234636A

    公开(公告)日：1993-08-10

    申请号：US929463

    申请日：1992-08-13

    申请人： Charles W. Hull ,  Richard N. Leyden ,  Marek Sekowski

    发明人： Charles W. Hull ,  Richard N. Leyden ,  Marek Sekowski

    IPC分类号： B05D1/04 ,  B05D3/06 ,  B05D5/06 ,  B05D7/02 ,  B29C33/38 ,  B29C67/00 ,  G03F7/00 ,  H05K3/28

    CPC分类号： B29C67/0096 ,  B05D1/045 ,  B05D5/061 ,  B05D7/02 ,  B29C33/3842 ,  B29C67/0051 ,  B29C67/0066 ,  G03F7/0037 ,  B05D2401/32 ,  B05D3/067 ,  B29K2995/0073 ,  H05K3/28

    摘要： Methods of coating stereolithographic parts and smoothing over characteristic surface discontinuities having alternating recesses and peaks. A stereolithographic part is first substantially covered with a substance capable of becoming less viscous when heated at a temperature which does not substantially thermally degrade the part, wherein the heated substance has an appropriate surface tension. Then, the substance is heated to that temperature until the substance flows preferentially into the recesses of the surface discontinuities and away from the peaked surface discontinuities. The substance will thereafter form a short surface connection over the recesses of the discontinuities through the surface tension of the heated substance. The substance is then polymerized or hardened either by cooling, thermally setting or by UV curing.

    摘要翻译： 涂覆立体光刻部件并平滑具有交替凹陷和峰值的特征表面不连续性的方法。 首先，立体光刻部件基本上被能够在基本上不降解该部件的温度下加热时变得粘度较低的物质覆盖，其中加热的物质具有适当的表面张力。 然后，物质被加热到该温度，直到物质优先流入表面不连续部分的凹陷中并远离峰值表面不连续性。 此后物质将通过加热物质的表面张力在不连续部分的凹陷处形成短的表面连接。 然后通过冷却，热固化或通过UV固化将物质聚合或硬化。

    Selective deposition modeling materials and method
    6.
    发明授权
    Selective deposition modeling materials and method 失效
    选择性沉积建模材料

    公开(公告)号：US6133355A

    公开(公告)日：2000-10-17

    申请号：US873389

    申请日：1997-06-12

    申请人： Richard N. Leyden ,  Charles W. Hull ,  Dinh Ton That

    发明人： Richard N. Leyden ,  Charles W. Hull ,  Dinh Ton That

    IPC分类号： B29C35/08 ,  B29C41/02 ,  C08K5/04

    CPC分类号： B29C67/0059

    摘要： A novel thermopolymer material adapted for use in thermal stereolithography. More particularly, a thermopolymer material comprising a mixture of: a low shrinkage polymer resin; a low viscosity material such as paraffin wax; at least one microcrystalline wax; a toughening polymer; a plasticizer. Alternative embodiments further include components to improve the materials ability to transfer heat and to improve strength. The subject material, together with the described process greatly reduce part building distortions while retaining desirable toughness, strength and jetting properties.

    摘要翻译： 适用于热立体光刻的新型热聚合物材料。 更具体地，涉及一种包含以下混合物的热聚合物材料：低收缩率聚合物树脂; 低粘度物质如石蜡; 至少一种微晶蜡; 增韧聚合物; 增塑剂。 替代实施例还包括提高材料转移热能力和提高强度的组件。 主题材料与所描述的方法一起大大减少了部件构造的变形，同时保持了所需的韧性，强度和喷射性能。