Discussion in 'Coin Chat' started by Howard Ryan, Mar 4, 2021.
Log in or Sign up to hide this ad.
I feel like it would cause more harm than anything.
Doesn't sonic sealing create enough heat to release gases from the plastic? I mean, if its archival maybe it wouldn't be a big deal but I have sooo much anxiety from this thread! Lol!
Might just buy one then. But for the sake of experiment, what temp. is used on your sealer to seal the mylar flips shut? I do want to try with the iron just to see. I have a temp gauge and the Iron, I wrongly wrote in the OP F when it should be C (Celsius). So, temp gauge on iron goes from 90C to 160C.
I don't think 90C-160C gets you quite there (194F-320F) and it won't actually fuse.
I'm sure I've gone way overboard here
just saying you don't want melting, but you want hot enough to actually fuse strongly. and the material matters as well as the machine used to seal it.
Another thing to keep in mind, TRUE mylar or PET "archival quality" with no additives or coatings like UV blocker, can't be conventionally heat sealed.
The fusing won't stick well, and if you crank up the temp it will cut, melt or burn instead of seal. it requires an RF sealer to fuse it solidly and cleanly.
Just staple it and flatten the staples. I wouldnt be wrapping them in tape
The TPG slabs are fine. They have it essentially perfected. Theres coins that have been in them for decades that are perfectly fine
Yeah, there is that . A flat clinch stapler would get the job done without all the guess work on material composition, temperatures and testing, or even the 2nd step of manually flattening of staples if a person did go with a stapler.
is the flip you are using double pocket?
Yes, I understand that sellers do so, with a return privilege requirement that the flip be as sent to the buyer, to prevent shenanigans, bur other than this, I never found it particularly helpful.
Besides, us old guys would burn our eye out getting to close to see that it is sealed, and/or waste 17 flips until we got it correct, or forget what we were doing and then open it after sealing to place in another album/holder/coffin. It happens....
Yes, I understand that but doing the same for a different plastic...?
As long as it’s not PVC I’m interested to learn more
I can't be positive Evan. I used to do sonic sealing with specialty 10cc syringe parts, both the finger grip and the thumb grip. This happens so fast I don't ever recall a smell and never noticed any gassing. But that was a long time ago in the early 70's. Those parts were made of polypro as opposed to mylar or poly vinyl. If someone with more scientific know how could explain in this case, I'm certainly open to views.
Separate names with a comma.