12.
    发明专利
    未知

    公开(公告)号:ES2057445T3

    公开(公告)日:1994-10-16

    申请号:ES90313187

    申请日:1990-12-05

    Applicant: MACDERMID INC

    Abstract: An electroless metal plating process, particularly for use in plating through-holes in printed circuit substrates, (14) and more particularly for additively depositing copper metal on through-hole surfaces, in which the substrate is at least intermittently subjected to vibrating motion in contact with the electroless depositing bath, (12) and an electroless metal depositing apparatus for carrying out the process.

    13.
    发明专利
    未知

    公开(公告)号:DE69009978D1

    公开(公告)日:1994-07-21

    申请号:DE69009978

    申请日:1990-12-05

    Applicant: MACDERMID INC

    Abstract: An electroless metal plating process, particularly for use in plating through-holes in printed circuit substrates, (14) and more particularly for additively depositing copper metal on through-hole surfaces, in which the substrate is at least intermittently subjected to vibrating motion in contact with the electroless depositing bath, (12) and an electroless metal depositing apparatus for carrying out the process.

    METAL DEPOSITION FROM A NON-AUTOCATALYTIC ELECTROLESS PLATING BATH WITH ELECTRIC POTENTIAL

    公开(公告)号:CA1177773A

    公开(公告)日:1984-11-13

    申请号:CA383621

    申请日:1981-08-11

    Applicant: MACDERMID INC

    Abstract: A method of continuously depositing a metallic plating to any desired thickness on the surface of a workpiece from a non-autocatalytic electroless plating bath that is normally inherently self-limiting as to the thickness of metal which can be deposited by electrolessly plating, the novel method comprising applying an electric potential on the workpiece in the electroless bath. The method provides non-autocatalytic baths, such as hypophosphite-reduced electroless copper baths, with the ability to plate on nonconductors to a thickness which increases with time at a rate dependent on the amount of current applied. A more uniform thickness of deposit over the workpiece being plated and greater deposit penetration into blind holes, deep recesses and tubular portions of complex-shaped parts are obtainable by the method.

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