As others have said wet lamination has been around for years and Dupont is
currently promoting the process.

The process is relatively simple - before the core reaches the rollers and
resist the core is run across a wet roller.  Early on Dupont used what they
termed a sock - essentially a cotton material soaked in water.  I believe
they have improved on this model.

For test purposes you can manually wet the panel in the same manner.  Dampen
a sponge or cloth and coat each side of the panel with water. (Use D.I.
water) Immediatley after wetting the panel feed it into the hot roll
laminator. When I say wet the panel what I mean is to dampen the panel. It
should not be dripping wet.  This is a rather crude method but will work.

Good Luck

Pete

>From: Baski Devre <[log in to unmask]>
>Reply-To: TechNet E-Mail Forum <[log in to unmask]>,              Baski Devre
><[log in to unmask]>
>To: [log in to unmask]
>Subject: [TN] Wet Lamination
>Date: Mon, 29 Aug 2005 17:08:57 +0300
>
>Dear Technetters
>
>I read an articel on wet lamination so below is the quatation from the
>article
>         "Wet lamination of dry film photoresist is not new, but is
>growingd
>significantly in popularity as cost and technology demands are increasing.
>Wet lamination helps reduce defects attributed to poor dry film
>conformation. Key to success for wet lamination has been the reliabilty of
>the equipment, the wetting station that is attached to the dry film
>laminator. There are currently about 120 installed wet lamination units in
>operation which confirms that this process is dependable. the wet
>lamination
>process has demonstrated significantly improved yields through a reduction
>in condutor opens/nicks."
>         I have elaborated on the article "dry Film Photoresist Technology
>for
>Profitable Western PCB Production"
>First of all thank you for that you issued such a half technical and half
>economical article. We are PCB manufacturer and we apply dry film panel
>palting and as you mentioned in your article wet lamination will avoid some
>nicks and opens defects. So How we can apply these wet lamination to our
>process. What we need to do what do you advice us to do. Can you please
>provide us with technical assistance for this.
>
>We are waiting for your kind interpretation and knowledge
>So is there anybody who has knowledge about wet lamination process and what
>kind of equipments we need to convert our process to wet lamination
>process.?
>Best Regards
>
>
>
>
>Yusuf GÖMEÇ
>Product Quality Engineer
>
>BASKI DEVRE SAN ve TIC LTD STI
>Ceyhan Sk. No:10 34896 Pendik-Istanbul-Turkey
>
>Tel: 00 90 216 3901036 (4 Hat/Line)-173(Extention)
>      00 90 216 4836560 (4 Hat/Line)-173(Extention)
>Fax: 00 90 216 3544941
>      00 90 216 4913269
>Gsm: 00 90 533 6579897
>      00 90 533 7480014
>
>Internet: www.baskidevre.com.tr
>
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