Hamilton, Richard -4454 wrote:
>
> Hello all,
>
> I wanted to get a 'heads up' on a possible problem so I asked this several
> months ago and got no reply. I thought, Great! This is not a problem!!
>
> Well, not so sure now. The peelable masking we are using on our PWB's seems
> to be getting tougher to remove after reflow process has been added to the
> system.
>
> Anyone have any suggestions, guidelines, or other input on what to look for
> or what to look out for? We will have to start looking at other vendors for
> the masking. Sorry but I cannot tell you the mfgr right now, our PWB
> designer is out today. If this information is needed, let me know and when I
> get it I will let you know.
>
> Thanks gang.
>
> Richard Hamilton
> Clemar Mfg. / Rain Bird
> [log in to unmask]
>
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=======================================

Richard:

There is a water soluble Solder mask that will protect surfaces against
solder contamination and is washed off during wash cycle. If you are
washing your boards, then it is a very effective process. It was used
very successfully when I was at IBM.

Let me know of your application and process parameters and I can send
you small sample of the material for a trial.

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