Electrolysis: processes – compositions used therein – and methods – Electroforming or composition therefor – Mold – mask – or masterform
Patent
1992-11-24
1993-08-10
Tufariello, T. M.
Electrolysis: processes, compositions used therein, and methods
Electroforming or composition therefor
Mold, mask, or masterform
C25D 110
Patent
active
052345718
ABSTRACT:
A process to manufacture stepped mold inserts and stepped microstructural bodies molded with the mold inserts. Stepped mold inserts are manufactured using structured irradiation masks with regionally different absorption for x-radiation; to this end, extensive calculations are necessary. Furthermore, several masks can be used in succession and for each irradiation step the penetration depth of the x-radiation can be changed. These masks must be positioned with high precision. With the present process stepped mold inserts are manufactured by a simple procedure. Several layers of varying thickness are applied on a metal plate alternating with non-conductive and conductive material. The layered stack is prestructured by precision mechanical machining at depths that vary from region to region, filled with a resist material and irradiated preferably through a single structured mask. Following the "development" of the resist layer, metal is electrodeposited in the microstructure and the metallic mold insert is separated from the resist structure.
MicroParts GmbH
Tufariello T. M.
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