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UV blocking Acrylic for framing question

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Post time: 2015-7-11 22:03:03 |Show all posts
While I understand there's at the very least a negation of an OBA-content paper's brightness using a UV blocking acrylic, and at worst there can evidently be a detrimental effect (color shift?), my question is whether reversing the UV acrylic would remove the issue.
The reason for asking is twofold:
1.  In the past, UV acrylic I received was clearly labelled (on the peel-off film) to ensure that a specific side is facing out (ie. I suppose this side containing the blocking layer?).  Having the sheet facing the 'wrong' way would imply that you don't reap any UV blocking advantage.   However, I haven't recently received any Acrylic labelled this way, so wonder if there are brand differences in how the UV blocking is built into or onto the substrate?
2.  Going this route would mean I could buy UV Acrylic in bulk (without knowing future intent of the material) and could theoretically use facing one way or the other for a given print on a given paper type.
If this does work..  is there any easy way to test to find out which side blocks incoming UV light?
-- hide signature --'You can't be optimistic with misty optics'

Post time: 2015-7-12 00:28:43 |Show all posts
Having used a fair amount of framing acrylic myself, I am 99% certain that there is no "right side" unless it is also anti-reflection, which is only on one side.

Post time: 2015-7-11 23:13:54 |Show all posts
I would contact either the manufacturer, the seller, or a frame shop about your question.
If it blocks UV it doesn't matter which way the acrylic faces - it will block UV.
One concern might be: if it has a coating and the coating is facing outward, it may be damaged during cleaning.
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