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| From [log in to unmask] Mon Feb 26 12: |
33:33 1996 |
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Dear TechNet:
We currently are using a solvent for tape residue removal after HASL that is
a "middle treated hydrodistillate" (100% petroleum hydrocarbons). It is
sprayed in a conveyorized system. This material can cause various problems
in our waste water treatment system, so we are looking for an acceptable
alternative.
We have tried no-residue tapes, but quality has been lacking.
The ideal tape residue material (if a solvent/organic material) will have
no/low VOCs and not interefere with waste treatment processes. If not low/no
VOC, a very low vapor pressure will help.
I thank you in advance for any suggestions.
Chris Ford
Env. Engineer
Printed Circuit Corporation
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