Does anyone know a way to clean double treat cores prior to hot roll dry 
film lamination? 

We frequently receive double treat laminates with surface contamination, 
stains and/or fingerprints. The surface preparation methods which we 
tried either didn't work or removed the double treat layer.

We are open to suggestions and will consider chemical or mechanical 
methods. We recognize that this is a "band-aid" approach, however, the 
laminators have been unable to correct the problem. Some of them do not 
require their operators to wear gloves, others have methods and 
facilities which work great for standard (single treat) product but not 
for double treat.

We accept laminate per MIL-P-13949H but there are a lot of grey areas in 
evaluating double treat surface quality. Some of the stains and weave 
patterns are believed to be "cosmetic" other defects are deemed 
functional as they may affect print and etch yields.

Best Regards,

Dan Brandler, Technical Director, Ohmega Technologies, Inc.