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    • 6. 发明申请
    • Methods of avoiding blowhole formation by conditioning through holes and glass
    • 通过孔和玻璃调理避免气孔形成的方法
    • US20020139686A1
    • 2002-10-03
    • US10087051
    • 2002-03-01
    • Michael V. CaranoFrank Polakovic
    • C23C028/00C25D005/48
    • H05K3/424
    • A composition and method for cleaning and conditioning a non-conductive surface defined by a through hole in a printed circuit board (PCB) is disclosed. The through hole surface is contacted with the composition of the invention to provide a cleaned and conditioned surface. The clean and conditioned surface is coated with conductive carbon particles (usually graphite) to provide a carbon-coated surface. The carbon-coated surface is electro plated and then soldered using hot solder. Those surfaces that have been soldered and also treated with the composition of the invention exhibit fewer blow hole problems. The composition of the invention comprises carbonates, binders, and resins, and combinations thereof, that improve the adhesion and coverage of a coating containing graphite to a surface defined by a through hole bore or other substrate. (nullThrough holesnull as used herein refers both to through holes and to vias.)
    • 公开了一种用于清洁和调节由印刷电路板(PCB)中的通孔限定的非导电表面的组合物和方法。 通孔表面与本发明的组合物接触以提供清洁和调理的表面。 清洁和调理表面涂覆有导电碳颗粒(通常为石墨),以提供碳涂层表面。 碳涂层表面电镀,然后使用热焊料焊接。 已经焊接并且用本发明的组合物处理的那些表面表现出较少的孔洞问题。 本发明的组合物包括碳酸盐,粘合剂和树脂及其组合,其改善了包含石墨的涂层在由通孔或其它基底限定的表面上的粘合性和覆盖性。 (本文所用的“通孔”是指通孔和通孔)。