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 Replies: 11 / Views: 1,607 |
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Pillar of the Community
United States
689 Posts |
I recently got a glass coin display case and I'm putting a new fabric on the bottom of it. I just started working at a precision machining shop and when we ship, store, and and pretty much do anything with the parts we make, we use this anti corrosion paper. All our parts have to remain in some what of a temperature and climate controlled area so I was thinking the paper might help prolong the life of my coins!  The brand name of it is Daubert Cromwell and its called volatile corrosion inhibiting (VCI) paper. So what I'm asking is could it beneficial to line my case with this paper or could it harm the coins?  |
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Pillar of the Community
United States
3076 Posts |
very interesting reading there,,,,,It essentially is a moisture barrier in principle however it "puts a coating on the coin/metal" to assist in oxidation prevention.....this may or not be a good thing...as the effects on the coins surface or color might show an effect from the cemmical.I would suggest you place some plane Jane coins in your case and see what happens, the idea is good so give it a try without risking valuable coins.......
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Pillar of the Community
 United States
689 Posts |
the coins would be in no direct contact at all with paper. the paper would be underneath the fabric layer and the coins will all be in some type of cases. just thought I should clarfy that.
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Pillar of the Community
United States
689 Posts |
also if I did test it with lesser coins how long would I have to wait to be sure?
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Bedrock of the Community
United States
12437 Posts |
Quote:
The brand name of it is Daubert Cromwell and its called volatile corrosion inhibiting (VCI) paper Interesting, that sounds similar to Intercept Shield products |
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Moderator
 Australia
16816 Posts |
Not quite, biokemist. Intercept Shield is sacrificial protection - corrosive gases passing by or through Intercept Shield material react with the shield, not the coin. If this VCI stuff does what it's makers claim, then the volatile compounds evaporate off the paper and coat the surface of the metal. That would be akin to coating your coin in varnish or olive oil, or maybe WD-40... except the makers claim the coating is "volatile" so it evaporates away when it's no longer wanted. Just how the coating "knows" whether it's wanted or not is what I want to know. And the thing about "airtight packaging not required" sounds just plain silly. If the stuff's volatile and not stored in an airtight location, the volatile molecules will dissipate. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Bedrock of the Community
United States
19942 Posts |
VCI products have been around forever. Rather than explain their function, it's best to read about them yourself: http://www.vci2000.com/html/technical.htmlPersonally, I would not use this paper with coins without a lot of testing. Also, the storage contain would have to be sealed pretty tightly or your VCI will just vanish over time.....the active is, afterall, volatile! These are typically short-term inhibitors, not much good for coins. I'd also be a bit concerned over the health effects since you'd be exposed to the vapors everytime you opened the cointainer. For coins I much prefer non-volatile corrosion inhibitors, such as the type found in VERDI-CARE™. These are much longer lasting and provide superior protection over the long-term. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Bedrock of the Community
United States
19942 Posts |
double post  Edited by BadThad
04/08/2010 09:28 am
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Bedrock of the Community
United States
12437 Posts |
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If this VCI stuff does what it's makers claim, then the volatile compounds evaporate off the paper and coat the surface of the metal Ooo, that is not what I thought it was at all. It took it to mean that it inhibited volatile corrosive compounds  That product does not sound like something I would want around coins. |
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Pillar of the Community
United States
3076 Posts |
yes thats exactly what it does, a micro film over the metal surface to inhibit decay... the question is, would that change the coin or its luster, contaminating it, while thinking its preserving it,,,,,however it would be interesting to know just how the NCS conserveing process works, perhaps its a spin off of the VCI?
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Pillar of the Community
United States
689 Posts |
i thought the same as biokemist did. Like I said I just started the job a couple weeks ago and the few people I asked about the paper could only tell me simply "its to stop rust",
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Bedrock of the Community
United States
20753 Posts |
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i thought the same as biokemist did. Like I said I just started the job a couple weeks ago and the few people I asked about the paper could only tell me simply "its to stop rust",
Note the "stop rust" statement. Most coins do not rust and I presume those products are made of an Iron type product that could rust. Also, as Thad pointed out, might not be the healthiest STUFF either. |
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Replies: 11 / Views: 1,607 |
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Posted 04/07/2010 11:18 pm
