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August 2000

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Subject:
From:
Paul Klasek <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 18 Aug 2000 08:28:51 +1000
Content-Type:
text/plain
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text/plain (62 lines)
Connector fabs use rigid piece of kapton foil ,
removed after reflow .
Agree, the burn out is a mirage          paul

-----Original Message-----
From: Douglas Pauls [mailto:[log in to unmask]]
Sent: Thursday, 17 August 2000 23:16
To: [log in to unmask]
Subject: Re: [TN] Tape that can vaporise at high temperature


In a message dated 08/16/2000 9:29:44 PM US Eastern Standard Time,
[log in to unmask] writes:

> Does anyone know if there is such kind of tapes that can vaporise at high
>  temperature (200 degC) and leave nothing on the workpiece on which the
tape
> is adhered?

I would be really surprised if such an animal existed.  Most tapes have an
adhesive of some sort that nominally bonds with a surface.  While your tape
may volatilize, the adhesive probably will not  Even then, when a material
volatilizes, you have to ask yourself where it goes.  It doesn't just
disappear.  Usually the smoke or othe decomposition products deposit on
nearby surfaces.

Never believe a salesman.  Anyone who tells you you that it completely
volatilizes and leaves no residue doesn't have a firm grasp of physics and
little real world manufacturing experience.

Doug Pauls
CSL

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