Process for sealing at least one well out of a number of wells p

Details Process for sealing at least one well out of a number of wells p Process for sealing at least one well out of a number of wells p

1995-01-25

1996-12-10

Aftergut, Jeff H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

533742, 53453, 53471, 53478, 53559, 156292, 1563084, B29C 6518, B65B 904

Patent

active

055826652

ABSTRACT:
A plate having wells therein for receiving chemical substances is provided with a coverplate covering said filled wells. The process for sealing the wells by providing a joining seam running around the wells provides the joining seam such that it has a profiled cross-section in order to increase the contact surface between the plate and the coverplate. To this end a welding die has a front surface provided with projecting profiled regions and being heated to a temperature in the region of the melting point of the coverplate. The welding die is placed on the coverplate means and remains there for a fixed first period. Then the welding die is pressed down through a fixed path and remains in this position for a fixed second period. Removing the welding die from the coverplate is the last step in the process.

REFERENCES:
patent: 3251463 (1966-05-01), Bodet et al.
patent: 4012888 (1977-03-01), Nichols
patent: 4582555 (1986-04-01), Bower
patent: 5173143 (1992-12-01), Fujii et al.
Arbeitsmappe fur den Verpackungspraktiker, "Maschinelles Verpacken", neue rpackung Aug. 1982, Prof. D. Berndt, Berlin, pp. 979-986.

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