Life on PSA holders?

Anyone know the life on a PSA holder? I plan to have great great great great grandchildren. So one of those kids has to like sports, so I need to bequeth the cards down. I assume it's better than "air" touching the cards, but anyone know?
Running an Ebay store sure takes a lot more time than a person would think!
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<< <i>The half life of the plastic is probably half a million years. As for the glue holding the plastic together, no idea. Hope that helps. >>
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I guess no -one really has to worry about them at that rate
<< <i>The half life of the plastic is probably half a million years. As for the glue holding the plastic together, no idea. Hope that helps. >>
I thought the holders were sonically sealed together not with glue?
D's: 50P,49S,45D+S,43D,41S,40D,39D+S,38D+S,37D+S,36S,35D+S,all 16-34's
Q's: 52S,47S,46S,40S,39S,38S,37D+S,36D+S,35D,34D,32D+S
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73T:31,55,61,62,63,64,65,66,67,68,80,152,165,189,213,235,237,257,341,344,377,379,390,422,433,453,480,497,545,554,563,580,606,613,630
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As long as it lasts my lifetime , I couldn't care less how long it lasts after that , I'm not going to rack my brain trying to figure out how long because I'm sure there is no definitive answer .
I would have to imagine it would depend on what came in contact with the card before it went inside the holder , Like if it were inside a smokers house and stuff of that nature .
You can pretty much assume it's going to last a very long time though , so long you or anyone in your family would never have to worry about it .
"Properties: Unmodified polystyrene is rigid and brittle, has moderate strength, and is crystal clear. Impact strength is increased significantly by blending the polymer with rubbers such as polybutadiene.
Heat resistance is low compared to that of most thermoplastics; maximum recommended continuous-service temperature is well under 200°F. Electrical properties are good at room temperature and are affected only slightly by higher temperatures and varying humidity conditions.
Polystyrene is soluble in most aromatic and chlorinated solvents. It is insoluble in alcohols such as methanol, ethanol, normal beptane, and acetone. Most foods, drinks, and household fluids that have no effect on polystyrenes, but the resins are attacked by citrus-fruit-rind oil, gasoline, turpentine, and lacquer thinner."
Extended exposure to UV rays are also a no-no.