Treatment of circuit circuit carriers with pulse like...

Details Treatment of circuit circuit carriers with pulse like... Treatment of circuit circuit carriers with pulse like...

H - Electricity

05

K

H05K 3/00 (2006.01)

Patent

CA 2397078

The wetting, removal of gas bubbles and improvement of material exchange in both through and blind holes in circuit boards (LP) is not possible with conventional devices and methods without further application. In particular, very narrow holes, with large aspect ratios create difficult problems. According to the invention, the above problem is resolved by means of a method comprising the following method steps: the circuit boards (LP) are transported through a treatment unit (1), by means of transport means (13, 14), in a horizontal transport path and on a transport plane (2) and there brought into contact with a treatment fluid. An impulse generator mechanism (50) transmits mechanical impulses direct to the circuit board (LP) by means of the transport means (13, 14), and/or the treatment fluid.

Les procédés et dispositifs connus ne permettent pas d'imprégner, avec un liquide de traitement, des trous traversants et des trous borgnes, pratiqués dans des cartes de circuits (LP), ni de supprimer les bulles de gaz présentes dans ces trous, ni d'accroître l'échange de matière dans lesdits trous. En particulier, le traitement de trous très étroits, à facteurs de forme élevés, pose d'énormes problèmes. Le procédé selon l'invention vise à résoudre ces problèmes. A cet effet, il comprend les étapes suivantes : transport des cartes de circuits (LP) à l'aide de moyens de transport (13, 14) sur un trajet de transport horizontal (1) et dans un plan de transport (2), à travers une unité de traitement (1), et mise en contact des cartes de circuits avec un liquide de traitement. Des moyens de génération d'impulsions (50) transmettent des impulsions directement aux cartes de circuit (LP), ou par l'intermédiaire des moyens de transport (13, 14) et/ou par l'intermédiaire du liquide de traitement.

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