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Date: | Thu, 2 Jan 1997 08:21:08 -0800 |
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TechNetties,
We have been experimenting with extended cure times in the press for
improved small hole quality. We are working with standard multifunctional
materials and with some of the newer high temp stuff (180 Tg Etc.) We have
achieved much improved quality in vias of 10 mils by holding in the press
for 90 minutes at cure temperature (350 - 360 F)with various rise
rates versus the recommended 60 minutes. My question is this, how much
further can we go with this extended cure cycle before we can expect to see
some degradation of the materials? I think we're getting into a grey area
here and if anyone has some information I would love hearing from you.
Thanks,
Dusty
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Dusty Van Iderstine Direct 408-954-5784
Engineering Manager FAX 408-954-5780
Quick Turn Divisions
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