How would you store sealed cards like this then please? Im sure alot of us have the game promos, toys r us etc…and they are in similar packets. Or are you saying the grade may not reflect the condition of the card due to possible damage not seen without opening?
Cheers
Good question, I like to keep them in a top loader but then again, most of the ones I own that are sealed like that are not worth much so I haven’t given it too much thought lol.
Open them or accept that the degradation of the plastic will harm the cards condition over time.
…*sad face* :^(
how does the plastic degrade and destroy the card please? like the gluedegrading then making the packet open due to losing its grip aswell?
What about booster packs?
If they have any value just open them. I actually have proof for why. I got about 10 of them from e3. I opened 4 or 5 and graded them right away. Got mostly 10s. The rest I opened a decade later and they got 8 max. They were from the same lot but some simply spent more time in their cello pack.
As someone who’s been around lots of industrial type packages, I’m still baffled at how glue degradation can happen with a type of packaging that uses heat seals, and therefor doesn’t use glue…
I think someone posted a video (somewhere here?) that showed the damage they can cause.
Well if anyone can find it I’d love to see how glue magical appears on packaging that doesn’t use glue. I’m not talking about degrading plastic damaging the cards, or the wrapper making imprints. At work i use “wrappers” of the same clear material, and even some similar to the metallic wrappers for booster packs, ofc with different prints. Non of these things use glue. They are sealed using heated cylinders that press the edges together and give it that pattern. The “crimped” cards you sometimes see prove that cause those are the imprints of the part that both seals the sides of the packs and “cuts” them simultaneously.
Yet i keep hearing about “glue on booster packs” and things about there being a lot of glue when packs are harder to open. Packs being easier or harder to open has to do with the temperature difference in the sealing machine. Hotter=tougher to open.
If there is ANY actual visible glue on booster packs, it is most likely from the outer packaging, and not used on the boosters themselves.
I believe I only mentioned “damage”. Where did I mention “glue”?
Not you, but jkanly specifically mentioned glue earlier in this thread (can’t tag properly on tapatalk).
@stephneechan I said so mistakenly while thinking of something else. You’re right these do not have glue. Either way the plastic does degrade, which was the point.
The plastic degrading is similar to the theme deck wrappers damaging cards like Ninetales right?
Fair enough XD it just annoys me since it’s something i hear a lot, even from bigger youtubers
Exactly. I don’t have the video.
I don’t know the chemistry but higher storage temperature I believe has been found to accelerate the damage made by the plastic.
@stephneechan thanks for pointing that out. I don’t mind being corrected from time to time, it keeps the information on point for others and everbody makes mistakes 
Thanks for sharing your experience too!