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[Need Help] Foam Board / PS Board / KT Board bubbling problem with SAV

Acotop

New Member
Hi guys,

I have a problem with chinese KT board/ps board. I applied SAV/vinyl sticker to the foamboard with mounting machine and after few days it started to bubbles (like the photos). Any idea why this is happening, any workaround or things that I can do to fix this? Thanks a million guys...
 

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