by 
Azlotto
ANSWERS: 2
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not to long if it is porn your laminating
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It varies tremendously according to the quality of plastic being used. As plastic ages it outgasses plasticizers. Better plastics outgas more slowly and bad ones more quickly. There is no way to tell just by looking at it. As plasticizers leave, the plastic becomes more brittle and fragile, potentially becoming threat to the very document it's protecting. So you'll have to research the plastic you're using.
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