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Old 09-15-2015, 08:45 PM
GoldenGoat GoldenGoat is offline
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Default What makes old discs start to "fingerprint"?

So I was looking through my disc stash and to my horror my first ever and favorite disc has started to "fingerprint". It's a CE Champion Classic Roc and its been sitting in my closet for about 6 months since I've retired it. It shouldn't really ever be that hot in the closet so I'm wondering what could have caused my disc to start fingerprinting?
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Old 09-15-2015, 08:48 PM
DanJon DanJon is offline
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As I understand it, older plastic is petroleum based. So as the plastic gets older, it breaks down and starts leaching oils out.

I think sunlight/light helps the process.
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Old 09-15-2015, 09:32 PM
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Kodachrome Kodachrome is offline
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http://www.dgcoursereview.com/forums...d.php?t=103221

boom. there's your answer.


also http://www.dgcoursereview.com/forums...t=79357&page=3 about halfway down the page - more science-y than the first.

Last edited by Kodachrome; 09-15-2015 at 09:36 PM.
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Old 09-15-2015, 10:44 PM
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Quote:
Originally Posted by Kodachrome View Post
http://www.dgcoursereview.com/forums...d.php?t=103221

boom. there's your answer.


also http://www.dgcoursereview.com/forums...t=79357&page=3 about halfway down the page - more science-y than the first.


I'm glad that post is still getting some reads...
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Old 09-15-2015, 10:46 PM
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I remember seeing it a while ago. I'm a bit of a forum nerd.
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Old 09-15-2015, 11:41 PM
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Plasticization Holmes!
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Old 09-15-2015, 11:47 PM
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I get the transition from age that causes this, but what about fairly new plastic that has the same fingerprint-ish issue?
Maybe mix that has a higher level of plasticizers initially?
I've seen this brand new from Innova, Discmania, Kastaplast, and Gateway.

Last edited by Mulligan; 09-15-2015 at 11:50 PM.
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Old 09-16-2015, 01:43 AM
GoldenGoat GoldenGoat is offline
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Thanks for all the replies, so is there any way to restore the disc? Something I can put on it or at least something good to use to clean off the oil on the disc?
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Old 09-16-2015, 02:21 AM
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Also while trying to research more about this problem I learned of potentially hazardous "Phthalate plasticisers", does anyone know if they use these in the production of disc golf discs and if so does that mean that my disc has become a potential health hazard?
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Old 09-16-2015, 09:52 AM
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Quote:
Originally Posted by GoldenGoat View Post
Also while trying to research more about this problem I learned of potentially hazardous "Phthalate plasticisers", does anyone know if they use these in the production of disc golf discs and if so does that mean that my disc has become a potential health hazard?
You shouldn't eat them..
There's also nothing I know of to reverse the process, so nothing can be done to "restore" them.
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