Here's one for you guys, and
gal's.
We are witnessing measling
in sporadic fashion.
It usually occurs along the
edge of the panel, sometimes encroaching on the boards, sometimes
not.
We have already contacted
our supplier, for their huh hum, expertise.
We pulled and reviewed again, all process
records. There has been no change in the process. Verification and calibration
records reflect proper equipment function.
This is happening with 7629 pre-preg in 12 x 18
and 18 x 24 sizes
We had pulled the material
with the same lot number, the problem went away just as
quick.
Well, it repeated itself a
week or two later, again we switched to a different batch of material, the
problem went away.
With the supplier on-hand, we laid up a book using pre-preg
from the batch we had earlier observed measling from, as well as from another
batch, there were not any measles observed, we repeated this, and again there
were measles.
We went back to the process, re-checked everything, still no
significant changes.
Our supplier has been in-house for three days running
experiment's, they even brought someone in to assist him, they are just as
puzzled.
Samples have been sent to Microtek Labs for their
analysis/opinion, no response so far.
Just wondering, does anyone out there want to take a shot at
this one.
Thanks,
Franklin D Asbell