|
#1
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
Hey guys ! |
#2
|
|||
|
|||
Plastics used to slab cards
Posted By: davidcycleback
I asked your question to my dad, who is a Professor Emeritus of Chemical and Biological Engineering and member of the National Academy of Engineering. He said that you would have no health worries from plastic holders sitting around your house. Plastic bottle issues come from people regularly drinking directly from the plastic, not the bottles sitting in the kitchen closet or the shelf. |
#3
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
Thanks David, |
#4
|
|||
|
|||
Plastics used to slab cards
Posted By: Matt
With the exception of Beckett, to the best of my knowledge, no other major grading company incorporates UV protection into their plastic slabs. |
#5
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
Hey Matt, |
#6
|
|||
|
|||
Plastics used to slab cards
Posted By: boxingcardman
Cards in SGC and PSA slabs will fry in the sun or under UV lights. I've seen quite a few that have lost their luster from being placed on display. |
#7
|
|||
|
|||
Plastics used to slab cards
Posted By: boxingcardman
repeated it |
#8
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
In modern and early printing, any print even with UV protection, magenta is the first color to go, but it will still fade just more slowly. Museum conservators keep direct light off artwork, and in my opinion, cards should be treated the same way. The key is the type of plastic that is used. Just remember, every plastic is a petroleum product, and heat will always be a factor, and is a catalyst for the degradation of the product over time. Heat can also cause the plastic to gas. I've seen a number of slabbed cards with what seems to be loose plastic outside the boundary of the card. Am I mistaken in this observation ? |
#9
|
|||
|
|||
Plastics used to slab cards
Posted By: Rick McQuillan
Tim, |
#10
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
Hey Rick, |
#11
|
|||
|
|||
Plastics used to slab cards
Posted By: davidcycleback
Duly note that my dad answered the question assuming collectors never handle slabs with their bare hands or, God forbid, crack them open. |
#12
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
So, the next question is; What is the half life of a standard slab ? Will our cards be trampled on by Cher, and roaches after Armageddon ? |
#13
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
OK, |
#14
|
|||
|
|||
Plastics used to slab cards
Posted By: Mark Anderson
Can't speak for other companies, but at Beckett, we contacted archivists at the Library of Congress when deciding upon materials. For paper, they recommended polypropylene and polystyrene, which is what we use, with some UV additive. |
#15
|
|||
|
|||
Plastics used to slab cards
Posted By: Scott Levy
Leon/Board, |
#16
|
|||
|
|||
Plastics used to slab cards
Posted By: TFerg
SGC uses an impact grade of polystyrene, as does PSA. |
#17
|
|||
|
|||
Plastics used to slab cards
Posted By: Mark Anderson
My guess is that all major companies use polystyrene. |
#18
|
|||
|
|||
Plastics used to slab cards
Posted By: Tim James
I just got back from Chicago, and I was glad to see some more informative responses. |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
PSA - Why not slab miscut cards?!? | Archive | Net54baseball Vintage (WWII & Older) Baseball Cards & New Member Introductions | 17 | 02-10-2008 12:14 PM |
I want to safely remove cards from slab | Archive | Net54baseball Vintage (WWII & Older) Baseball Cards & New Member Introductions | 3 | 01-12-2007 04:43 AM |
Why does PSA slab M116 or T206 cards in an oversize.... | Archive | Net54baseball Vintage (WWII & Older) Baseball Cards & New Member Introductions | 11 | 09-02-2006 07:47 AM |
To slab or not to slab? | Archive | Net54baseball Vintage (WWII & Older) Baseball Cards & New Member Introductions | 17 | 03-18-2006 12:36 PM |
SLAB | Archive | Net54baseball Vintage (WWII & Older) Baseball Cards & New Member Introductions | 13 | 09-09-2004 03:40 PM |