Mail*Link(r) SMTP FWD>FAB: Exhaust Air "filter" Roland- The manufacturer of our etching equipment called the ventilation exhaust "filters" a "demister" and they were available as an option when we bought the equipment. The "demister's" we bought have a 150 mm (6 inch) inside diameter inlet and outlet duct size. The demister is about 300 mm diameter by about 600 mm long. The side of the demister has a removeable panel to remove the internal filter, which is about 200 mm high and fills the inside diameter of the demister chamber. The filter material we use is polypropylene fiber and is in the form of a 3-D web of randomly oriented fiber(s) forming a sponge-like filter. For us they have been reasonably effective, provided they are maintained. We use two of them, one for each of the inlet and outlet ventilation exhaust hoods of the etch chamber. Ralph Hersey [log in to unmask] -------------------------------------- Date: 5/2/96 11:23 PM From: Roland Jaquet As anyone some experience with wet process machines air exhaust "filters" that can reduce the amount of liquid being sucked from the horizontal conveyorized machines as Acide etching machine, and the like. While visiting IBM, Austin Tx. i have seen very simple kind of boxe onto the exhaust pipe, with a kind of plastic nets inside, that are trapping most of the humidity and therefore reducing excessive rejects of chemicals in the air. Anyone can supply me with those ? Thank you. Roland Roland Jaquet Technical Director Henri Jaquet SA PCB manufacturer Geneva Switzerland Prototypes and small qties tel. xx41-22-794-7878 fx. xx41-22-794-3052 [log in to unmask] ------------------ RFC822 Header Follows ------------------ Received: by quickmail.llnl.gov with SMTP;2 May 1996 23:22:40 -0700 Received: from ipc.org by simon.ipc.org via SMTP (940816.SGI.8.6.9/940406.SGI) id BAA06319; Fri, 3 May 1996 01:15:58 -0700 Resent-Date: Fri, 3 May 1996 01:15:58 -0700 Received: by ipc.org (Smail3.1.28.1 #2) id m0uFDRl-0000DLC; Fri, 3 May 96 00:30 CDT Resent-Sender: [log in to unmask] Old-Return-Path: <[log in to unmask]> Date: Fri, 3 May 1996 07:34:55 +0200 Message-Id: <[log in to unmask]> X-Sender: [log in to unmask] (Unverified) X-Mailer: Windows Eudora Version 1.4.4 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: [log in to unmask] From: [log in to unmask] (Roland Jaquet) Subject: FAB: Exhaust Air "filter" Resent-Message-ID: <"FHZfN2.0.o7N.hdPYn"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/3806 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask]