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    • 3. 发明申请
    • GAS PERMEABLE MOLDS
    • 气体渗透性
    • WO2006011878A1
    • 2006-02-02
    • PCT/US2004/021060
    • 2004-06-28
    • EX ONE CORPORATIONLIU, JianxinMCDANIEL, JeffreyRYNERSON, MichaelKUHN, Howard
    • LIU, JianxinMCDANIEL, JeffreyRYNERSON, MichaelKUHN, Howard
    • B29C33/10
    • B29C33/10B29C45/345B33Y80/00
    • Gas permeable molds and mold segments having open porosity (60) are disclosed. Blind vents (56) in the mold wall's (54) outside surface (52) allow for an uninterrupted molding surface (62) while enhancing the gas permeability provided by the open porosity (60). Methods of making such gas permeable molds include forming them from sintered material. Methods also include the use of solid free-form fabrication followed by sintering. Also disclosed are unitary structures (150), for use in EPS bead molding, having a steam chest portion (152) with gas impermeable walls (156) and a mold section (154) having a gas permeable mold wall (172) having open porosity (176), and, optionally, open and/or blind vents (180, 178). Methods for making such unitary structures (150) include the use of solid free-form fabrication.
    • 公开了具有开放孔隙率(60)的透气模具和模具段。 在模具壁(54)外表面(52)中的盲孔(56)允许不间断的模制表面(62),同时增强由开孔度(60)提供的气体渗透性。 制造这种透气模具的方法包括由烧结材料形成它们。 方法还包括使用固体自由形式制造,随后烧结。 还公开了一种用于EPS珠粒成型的单一结构(150),具有具有气体不可渗透壁(156)的蒸汽胸部(152)和具有开口孔隙的气体可渗透模壁(172)的模具部分(154) (176),以及可选地,打开和/或盲孔(180,178)。 制造这种单一结构(150)的方法包括使用固体自由形式的制造。