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Date: | Thu, 29 Mar 2007 13:38:23 EDT |
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Hello Pradeep
Sorry for the delayed response. No flow prepreg has been used with success
for a good number of years. However, as you are noticing, no flow is not always
an accurate description of the material's actual performance . What you may
wish to do is to increase the aperature in the prepreg slightly in
anticipation of the flow. There are no hard and fast rules as there are many things
that can effect flow, not all materials perform identically and circuit designs
will vary considerably thus altering the localized pressure and squeeze out.
You will likely need to do a bit of characterization of the material(s) you
use.
As you infer, it is somewhat cosmetic (depending on use and the nature of
the bend.) The application of a fillet of a low modulus epoxy or silicone to
strain relieve the transition from rigid to flex.
That aside, I have a quick are question, are you using vacuum lamination?
Best wishes with your project,
Joe
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