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June 1998

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Subject:
From:
Bill Davis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 15 Jun 1998 07:14:31 -0700
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text/plain
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text/plain (69 lines)
Have you tried polyimide tapes?

> -----Original Message-----
> From: Paul Gould [SMTP:[log in to unmask]]
> Sent: Sunday, June 14, 1998 8:46 AM
> To:   [log in to unmask]
> Subject:      Re: [TN] Tape residue elimination
>
> Hello Duane,
>
> you could try a good quality paper masking tape. As long as it is peeled off
> while the panel is still warm after soldering, it should not leave a
> residue.
>
> Otherwise, there are some very good (and expensive) masking tapes used in
> hot air solder levelling, and believe me that needs a good tape. We use one
> which leaves no residue and withstands the extremes of hot air levelling
> without lifting. Expensive though the tape is, it is cheaper than peelable
> mask although that product also works well. Your pcb supplier should be able
> to supply your pcb's with peelable mask.
>
> I can't remember the details of the tape but if you email me at my office,
> [log in to unmask], I will get the details for you. You can also get tape
> dispensers which deliver a measured length of tape pre-cut which speeds up
> the application. Manual machines are cheap but you can get motorised ones
> for volume use.
>
> Regards
> Paul Gould
> Teknacron Circuits Ltd
> Isle of Wight, UK
>
> >From: Duane Briggs
> >To: [log in to unmask]
> >Subject: [TN] Tape residue elimination
> >Date: Monday, June 01, 1998 8:29PM
> >
> >Gold fingers have to be covered during flow soldering.  Is there any
> >tape
> >that does NOT leave ANY residue?  If not, what is the best, cheapest way
> >of
> >removing the residue?  Pallets are not an option for us unfortunately.
> >
> >Duane
>
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