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Fri, 18 Aug 2000 08:28:51 +1000 |
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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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