Device for the electrolytic treatment of plate-shaped workpieces
US5827410A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/0091
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The plate-shaped workpieces (W) are conducted through a treatment cell (BZ) containing a treatment bath in vertical attitude on a horizontal conveying path with the assistance of contacting and conveying means, the end walls of said treatment cell having vertical slots for the passage of the workpieces (W). The bath liquid emerging from the treatment (BZ) is collected in a collecting tank and is returned such into the treatment cell (BZ) with the assistance of a pump that an at least largely vertical flow direction (SR) derives at both sides of the conveying path. The bath liquid is diverted toward the surface of the workpieces (W) with guide devices (LV) arranged at both sides of the convoying path in the treatment cell (BZ). An improved ion exchange in the region of the workpieces (W) is effected by the guide devices (LV). In, for example, the electrolytic treatment of printed circuit boards, the metal deposition can thus be undertaken with high current densities. The guide devices (LV) are thereby arranged such that they form a guide for the workpieces. As a result thereof, thin, flexible printed circuit boards can also be particularly treated. The guidance of workpieces (W) wit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.