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| From [log in to unmask] Fri May 3 08: |
49:55 1996 |
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Hi all,
Does anyone have experience with soldermask on teflon?
Is there any information or specification on acceptance criteria for
bubbles in mask along traces for teflon material specifically?
We have very good adhesion, but on a random basis we will get very small
(less than .005") hard surfaced bubbles. They will not propagate or break
with heat.
We use a very gentle bake cycle -- 6 hours with 2 ramps, but the skin on
the mask just will not allow all the volatiles to escape without causing
the soldermask to bubble.
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Tom Stewart
Speedy Circuits Phone: 714-891-9441
5292 System Dr. Fax: 714-895-8485
Huntington Beach, Ca 92649 Email: [log in to unmask]
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