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 Replies: 12 / Views: 1,806 |
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New Member
Brazil
4 Posts |
So Have no problem with staples but, would look better without them. Self sealing holders are too expensive here so I was thinking about how to airtight seal da 2x2 holder. Then I remembered how gold leafs are "glued" by craftmaship http://craftthyme.com/how-to-gold-foil-fabric/) using foil adhesive ( https://www.amazon.com/iCraft-Deco-...00SW6KEV4/).Tested with different plastics and it bonds pretty well. Just bush a bit at the area I want to glue, let it dry and it gets sticky as tape and it's done. Since it's used specifically for gold / silver foils, maybe it could be safe for the coins? Also it's water soluble, so, maybe, chemically safe? thank you |
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Moderator
 United States
56855 Posts |
 to CCF. Best thing to do is contact the manufacturer of the glue and ask if it is coin safe. John1  |
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Rest in Peace
United States
18456 Posts |
If you have a lot of coins to holder it would be a lot faster and more economical to just use staples .  |
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Pillar of the Community
United States
4618 Posts |
I worry about outgassing from glue. I haven't used anything but Scotch Tape on my 2X2's in years. On the smallest (like III¢ silver) coins I used double-sided tape inside of the flip to seal it as tight as possible, but not so that it's in contact with the coins. I've never had a coin haze or tone in a 2x2 sealed with tape.
It's interesting, I do have an error Silver Eagle that has slowly toned over the 27 years that I've owned it, but it's "sealed" in a ANACS soap bar slab. It was almost totally blast white when it returned from grading, but now has really dark colors of green, purple and gold over most of the surfaces.
ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! 
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Pillar of the Community
United States
2023 Posts |
Quote:
I worry about outgassing from glue. ... It's interesting, I do have an error Silver Eagle that has slowly toned over the 27 years that I've owned it, but it's "sealed" in a ANACS soap bar slab. It was almost totally blast white when it returned from grading, but now has really dark colors of green, purple and gold over most of the surfaces. I recently bought a label printer so I could identify my PCGS slabs from the top (which is one thing I really like about the new ANACS slabs). I peeled a couple of labels off after only a couple of weeks and they left a very sticky residue. I'm now concerned about what off-gassing might be going on and am not looking forward to all the goo that might be off-gassing inside the box. Avoiding contact with the coins is one thing. Off-gassing is something else entirely. |
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Pillar of the Community
 United States
5669 Posts |
It looks like Deco Foil contains propylene glycol, which may have some mild corrosive effects when directly in contact with certain metals. No idea whether it has any effects with outgassing, but I wouldn't want to find out years later.
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Pillar of the Community
United States
6514 Posts |
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I worry about outgassing from glue. Totally agree. Check out my counterstamped Lincoln Cent collection: http://goccf.com/t/303507 |
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Bedrock of the Community
Canada
24885 Posts |
To the Forum. |
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Moderator
United States
188325 Posts |
to the Community! |
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Bedrock of the Community
United States
20753 Posts |
Or you could use plastic flips and seal them with a torch.   Just use staples and flatten them with a pair of pliers. |
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Rest in Peace
United States
18456 Posts |
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Or you could use plastic flips and seal them with a torch.  Oh a comedian Ahy !  |
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Pillar of the Community
United States
7940 Posts |
Quote:
It looks like Deco Foil contains propylene glycol The propylene glycol is present only at a couple of percent. It might be a component of the adhesive system that reacts as the adhesive cures. It might also be there as a plasticizer that makes the adhesive a little more spreadable before it sets up. As pointed out by others, these types of adhesive systems cure into polymers that may "outgas" slowly over time. This can be small solvent molecules, or other small organic molecules that are present in the starting components of the adhesive. Best case, this outgassing puts a thin film of an innocuous organic chemical on your coin (like the slow fogging of your windshield from outgassing of the plastics in your dashboard). Worst case, something could discolor or damage the coin. I wouldn't put this stuff anywhere near my coins. Edited by tdziemia
03/11/2020 07:58 am
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Bedrock of the Community
Australia
21786 Posts |
Cut two 3.5cm squares of acetate sheet recovered from food packaging. Make absolutely sure that they are clean, both sides.
Alternatively, the corner of an acetate flip could be used, that has been cut to size.
Place the coin between them, and heat seal the edges with a laminating iron, that is normally used for making laminated sheets for photographs or waterproof maps.
That should provide the air tight seal that you require.
Put the sealed coin inside a standard self adhesive 2x2,
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Replies: 12 / Views: 1,806 |
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Posted 03/08/2020 1:41 pm
