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Clear Sheet Protectors For Storing Sheets Of Stamps

 
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United States
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Posted 10/02/2022   09:46 am  Show Profile Bookmark this topic Add Hidalgo to your friends list Get a Link to this Message



I have been looking for protectors for my sheets of stamps. I came across these clear sheet protectors that are archival safe and PVC/acid - free.

Are these (type of) sheets good for long-term storage of stamp sheets?
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United Kingdom
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Posted 10/02/2022   09:58 am  Show Profile Check GeoffHa's eBay Listings Bookmark this reply Add GeoffHa to your friends list  Get a Link to this Reply
There have been lots of discussions on the forum about the benefits and drawbacks of using plastic sheets. You shouldn't need to use such sheets unless you're hinging stamps on pages facing one another.
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Posted 10/02/2022   10:09 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
The terms "archival safe and PVC/acid - free" are merely marketing terms meant to capture sales and are not an indication that any testing or verification has occurred.

The issue with sheet protectors is that they are a double edge sword and it all depends upon the environmental conditions.

But enclosing paper, they create their own 'mini environment inside the protector sheet. For example, if the paper becomes damp the sheet protector will keep it damp far longer than if the paper were allowed to 'breathe'. On the other hand, if the external environmental conditions were to become poor for a short period, the sheet protector will indeed protect the paper inside.

All this being said, you will never find any museum or archive that uses sheet protectors and this should speak loudly to us all.

The over-riding and primary factor in good stewardship is to control the entire environment by keeping it stable. Paper 'breathes' 24/7/365 and is constantly trying to normalize with the atmosphere around it, this is why a stable environment is key. Fluctuating atmospheric conditions drives paper to normalize itself quicker and more frequently. A cool, dry and stable storage environment is paramount; ideally temperatures should be held at a constant 70F with a relative humidity held between 30% and 50%.
Don
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United States
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Posted 10/02/2022   11:06 am  Show Profile Bookmark this reply Add Hidalgo to your friends list  Get a Link to this Reply
Thank you for your replies.

So I understand environment is very important. Consider factors other than the environment, what would be the best type of storage for sheets of stamps? I have a few sheets in glassine envelopes, but I am uncertain how they are for long-term storage.

Any recommendations?
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Posted 10/02/2022   12:23 pm  Show Profile Check GeoffHa's eBay Listings Bookmark this reply Add GeoffHa to your friends list  Get a Link to this Reply
Most of the stamp album manufacturers - Lighthouse, Lindner etc - make binders designed for full sheets of stamps, eg

https://www.nordfrim.com/mint-sheet...0-mm?cur=GBP
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Posted 10/02/2022   12:38 pm  Show Profile Bookmark this reply Add rogdcam to your friends list  Get a Link to this Reply
I use sheet inexpensive sheet file albums that have glassine storage pockets open on two sides. Quite a few of these albums by Supersafe and Lighthouse are manufactured using poly pages which brings you full circle to the plastics issue. Have never had an issue with glassine.
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Australia
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Posted 10/02/2022   1:01 pm  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply

I have used, and still do, the same protectors (different brand)
in all my albums.
20 years or so, no damage noted so far,
Kept in a safe constant temp environment. (locked cupboards)

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Posted 10/02/2022   2:19 pm  Show Profile Bookmark this reply Add angore to your friends list  Get a Link to this Reply
I doubt museums use common hinges. manila stock pages, or glassines. I have seen issues with all three.
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Al
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Posted 10/03/2022   07:36 am  Show Profile Bookmark this reply Add rogdcam to your friends list  Get a Link to this Reply
This from the National Postal Museum:

https://postalmuseum.si.edu/choosing-safe-plastics
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Posted 12/29/2022   08:08 am  Show Profile Bookmark this reply Add jmgi2022 to your friends list  Get a Link to this Reply

Quote:
This from the National Postal Museum:

https://postalmuseum.si.edu/choosing-safe-plastics


I'm using "Avery Heavyweight Non-Glare Sheet Protectors, 8.5" x 11", Acid-Free, Archival Safe, Easy Load". They are made of polypropylene, which the above link says are safe.

The sheet protectors are kind of flimsy on their own, so I bought some 8.5x11-65# white cardstock to go inside to stiffen them up. The cardstock is acid free also. The sheet protectors will only fit smaller sheets though, some older commemorative sheets, like from the 50's, I found are too big for them. So now I'm going to have to get some type of mint sheet file for those older larger sheets.
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Posted 12/29/2022   08:35 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
From the Society of American Archivists

Quote:
The use of 'archival' in commercial advertising to describe products suitable for materials and implying an infinite life span has made this use of the word nearly meaningless; some products so described would never be used by most archivists for such purposes
.

Same for the term 'acid free'.

Don
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