NintendoAge http://nintendoage.com/forum/ -Sqooner Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-02T09:52:58 -05.00 Ouendan 27 Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-02T01:18:17 -05.00 Ouendan 27 Originally posted by: arch_8ngel

99% of what people are storing in Mylar (which is a trade name for a type of polyester) could be adequately stored in polypropylene or polyethylene.
far more important than whether you use mylar or poly is the environment you store things in.   stable temp, low humidity is generally best for most items.    indoor storage is better than the garage or shed as you won't have the large overnight swings in temp.   Basically if you stick something in a closet or a heat controlled storage unit it will be fine.   The tool shed out back or an unheated storage unit?  Not so good.

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But for storage over the next decade, or two, it just won't be an issue.

99% of what people are storing in Mylar (which is a trade name for a type of polyester) could be adequately stored in polypropylene or polyethylene. Especially if it's going to end up in a box and protected from UV. ]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T23:58:51 -05.00 Ouendan 27
If you want to place a loose SMB3 in a baggie I guess that is fine but I wouldn't use it on a Stadium Events and put it in storage. ]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T22:13:30 -05.00 Ouendan 27

EDIT to add: 

quick primer on material science... polyethylene is simply a long chain of ethylene molecules (C2H4).  In the absence of other chemicals or a high heat source it's not going to do anything to your stuff.  In either of those cases, you have bigger problems than the polyethylene.
]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T22:11:49 -05.00 Ouendan 27 Originally posted by: arch_8ngel

They only really break down with UV exposure, which if stored in the open, will definitely happen in that timeframe.

I'm not saying they'll last forever. I'm just saying that they're safe, i.e. they won't crap up your games like some other plastics/PVCs.


Only Mylar is 100% safe ]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T22:09:20 -05.00 Ouendan 27
I'm not saying they'll last forever. I'm just saying that they're safe, i.e. they won't crap up your games like some other plastics/PVCs. ]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T22:05:33 -05.00 Ouendan 27 Originally posted by: arch_8ngel

Originally posted by: buyatari2

Only Mylar is 100% safe


Not true.

Mylar is the most durable safe option, sure.  But polyethylene or polypropylene are just as stable at the temperatures you'll keep them in.


EDIT to add:  Also, think about it this way... anything that is truly food safe is stable enough for your storage needs.  There are a lot of high acid content foods that would be poisoning people from leeching chemicals if the bags weren't chemically stable.


Polypropylene and Polyethelene are "acid free" but begin to degrade at around 8-10 years. Food isn't meant to be kept that long so they are great for food. You can use those for storage but you should then replace them as they age and begin to break down.
]]> Ziploc bags archival safe?? http://nintendoage.com/forum/messageview.cfm?catid=5&threadid=22903 2009-09-01T21:29:55 -05.00 Ouendan 27 Originally posted by: buyatari2

Only Mylar is 100% safe

Not true.

Mylar is the most durable safe option, sure.  But polyethylene or polypropylene are just as stable at the temperatures you'll keep them in.


EDIT to add:  Also, think about it this way... anything that is truly food safe is stable enough for your storage needs.  There are a lot of high acid content foods that would be poisoning people from leeching chemicals if the bags weren't chemically stable.
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