C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
149/3
C23F 1/08 (2006.01) C23F 1/00 (2006.01) H05K 3/00 (2006.01)
Patent
CA 1276096
PROCESS AND APPARATUS FOR CHEMICALLY TREATING ARTICLES IN A CONTAINED CHAMBER, WITH SEALED-DOOR ACCESS TO THE CHAMBER ABSTRACT OF THE DISCLOSURE A method and apparatus is provided for chemically treating articles, generally in a corrosive environment by etching or the like, where a corrosive substance is applied to the articles being delivered through a substantially closed chamber. The chamber is provided with access through an openable door, and a seal is provided between the door and the wall of the chamber. The seal is flexible and is inflatable, to prevent a treatment fluid with which articles are being treated within the chamber, from being dispersed from inside the chamber to outside the chamber at the juncture of the door with the wall of the chamber in which the door is located. The seal is expanded by means of a fluid pressure, and is releasable upon desired access to the chamber.
520688
Bereskin & Parr
Chemcut Corporation
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