What is the construction?
Is the Kapton clean?
Is the Kapton roughened?
Did you transfer the load to a cool down press (not with Pyralux you don't)?
Was the adhesive thick enough?
Give us some more details.

Chuck Brummer
Acuson

Eddy wrote:

> Recently , we work at a project is 4 layers FR-4 and  double Kapton lamination by the Dupond pyralux . alrought it work  but the reliability still low.
> Is any one have the experience before , any hint is highly appreciated.
> Eddy Chen
>
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