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    • 9. 发明申请
    • DECORATIVE LIGHT-TRANSMITTING PANEL
    • 装饰性发光面板
    • WO1996026662A1
    • 1996-09-06
    • PCT/US1996002100
    • 1996-02-16
    • BUTLER, Delicia, M.KANETIS, Stefan
    • A47G35/00
    • C03B23/0305B29C51/008B29L2007/002B44C5/04C03B23/0256C03B23/0302Y10T428/24355Y10T428/24413Y10T428/24479Y10T428/2457Y10T428/24612Y10T428/24628Y10T428/2495
    • There is disclosed a light-transmitting panel (71) of thermoplastic sheet material which has a relief pattern defined by a plurality of generally coplanar segments (72) which are separated by deep surface relieved areas that are characterized by greater material thickness than the planar segments and smoothly arched surfaces (74) of greater optical quality than the planar segments. The invention also comprises a method for forming the decorative light-transmitting panel (71) by thermoforming a plastic sheet on a mold having a plurality of generally coplanar lands which are separated by deep recesses that receive sagged regions of the thermoplastic sheet material. The sheet material which has been heated to its softening temperature is compressed against the lands to extrude the plastic material into the recess areas, following by cooling and removing the sheet from the mold to obtain the light-transmitting panel.
    • 公开了一种热塑性片材的透光板(71),其具有由多个大致共面的段(72)限定的浮雕图案,其由深表面缓和区域分开,其特征在于比平面段更大的材料厚度 和平滑的弓形表面(74),其光学质量比平面段更大。 本发明还包括一种用于通过在具有多个大致共面的平台的模具上将塑料片热成型来形成装饰透光板(71)的方法,所述多个平面区域由容纳热塑性片材的下垂区域的深凹部分开。 被加热到其软化温度的片材被压靠在台面上,以将塑料材料挤压到凹槽区域中,然后通过冷却和从模具中移除片材以获得透光面板。