Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1986-11-12
1988-05-03
Schor, Kenneth M.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156345, 156640, 156642, 134 2, 134 3, 134 15, 134 18, H01L 21306, C23F 102
Patent
active
047417986
ABSTRACT:
In an installation for etching material to be etched consisting at least partly of metal, preferably copper, oxidizing agent is added to the etching medium containing an acid, directly before the actual etching operation, in a quantity which is in a ratio to the quantity required according to stoichiometric calculation for etching the quantity of metal to be removed respectively from the material to be etched. For this a device is provided which emits a first electrical signal. This gives information about the quantity of material to be removed from the material to be etched respectively being processed. A second signal is emitted by a detector when the material to be etched enters the actual etching machine. Both signals are processed by a central control unit. This takes place in such a way that the central control unit emits a third signal which it has ascertained according to a memorized program from the first signal and whenever the detector signal is received. The third signal corresponds to the respectively desired quantity of oxidizing agent and acts on a metering device which then undertakes measuring of the quantity of oxidizing agent. In the same way acid may be added to the etching medium for regeneration in a stoichiometrically defined quantity.
REFERENCES:
patent: 3419446 (1968-12-01), Benton
patent: 3645811 (1972-02-01), Davies et al.
patent: 3880685 (1975-04-01), Behm et al.
patent: 3964956 (1976-06-01), Snyder
patent: 4042444 (1977-08-01), Snyder
patent: 4208240 (1980-06-01), Latos
patent: 4397708 (1983-08-01), Frantzen
Cody Lori-Ann
Hans Hollmuller Maschinenbau GmbH & Co
Philpitt Fred
Schor Kenneth M.
LandOfFree
Installation for etching material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Installation for etching material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Installation for etching material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1504118