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3 条记录 (耗时 0.007 秒)

    Method of electrostatically coating phosphor onto envelopes for fluorescent lamps and lamps coated thereby
    3.
    发明公开
    Method of electrostatically coating phosphor onto envelopes for fluorescent lamps and lamps coated thereby 失效
    一种用于磷光体荧光灯信封和由此涂覆的灯的静电涂覆法。

    公开(公告)号：EP0118251A2

    公开(公告)日：1984-09-12

    申请号：EP84301093.5

    申请日：1984-02-21

    申请人： THORN EMI plc

    发明人： Ellerbeck, Roger Percy ,  Ranby, Peter Whitten ,  George, Leslie John ,  Clewer, Peter John

    IPC分类号： H01J9/22

    CPC分类号： H01J9/225

    摘要： The invention provides a method of electrostatically coating a tubular glass envelope with phosphor for a filament lamp. The phosphor comprises a mixture of 100 parts by weight of phosphor, 0.01 to 3 parts by weight of a fatty acid having a melting point greater than 40°C or the ammonium, aluminium alkaline earth salts thereof, 0.05 to 5 parts by weight of finely divided aluminium oxide having a grain size smaller than 0.1 micron. The phosphor is applied to the tube by a venturi effect and results in a more uniformly applied coating than is provided using a suspension coating. Uniformity of the coating is measured by the disclosed optical densitometry test.

    摘要翻译： 本发明提供的静电涂覆有磷的管状玻璃外壳为灯丝灯的方法。 磷包括100重量份的磷，0点01至3份的混合物中按重量计具有熔点大于40℃，或者铵盐，铝盐碱土及其盐，脂肪酸的以重量计的精细0:05〜5重量份 具有晶粒尺寸小于0.1微米的小分割的氧化铝。 磷是由文丘里效应并且导致比使用包衣悬浮液，提供更均匀地施加涂层施加到所述管中。 涂层的均匀性由盘光学游离缺失密度试验测定。