I heat seal my coins in SAflips and try to get the seal as close as possible to the coin. That keeps the coin from moving around or shifting.
I don't see them listed at Amos but Amazon sellers have them and at half what I paid. You might want to check and make sure they can seal Mylar. http://www.amazon.com/gp/aw/s/ref=is_s_ss_i_1_7?k=impulse+sealer&sprefix=impulse
Subjecting plastic materials to heat can release substances used as plasticizers or can partly degrade the plastic to let off gasses that might harm the coins. Maybe I am just a worry-wart.
one of our members @Rocket city coin club was using the sure safe books that won't allow toning he sent off 5 to Pcgs secure the coin stiffer picked up what pervents toning so Pcgs just but in the old blue holder so I would stick to paper slips or dansco . phone
"SAflips can be heat sealed across the open pocket with an impulse Heat sealer." "Contains no PVC or Oil." "Heat Sealable." I paid too much for my impulse sealer. :3three:
If you ever have a question as to whether a plastic contains any PVC, a quick and sensitive test is to heat up a copper wire and while it is still hot, touch a part of the plastic. Put the copper wire back into the flame and a green color indicates PVC.
You also should not see the word Mylar. Mylar is not a material but a brand name for products made from polyethylene terephthalate. That is what you want to see if your looking for "mylar" flips. I believe SAflips have that on the package too but I'm at work right now and can't check.
Not quite. Mylar is polyethylene terephthalate (PET) and PET is Mylar, kind of like saying tissues are Kleenex and Kleenex is tissues.
I've never seen the word mylar on a coin storage product, have you? http://www.grafixplastics.com/mylar_what.asp
Yes, we know but someone new who's read that he should only buy Mylar flips is going to be looking for a long time.
Ummm, yeah, quite often... http://www.goodcentscoinsupply.com/100-qty-2x2-combination-mylar-coin-holder-10022.html
Please.... the term "mylar" is used extensitively, not only for coin storage but most document storage. Here's Wizards mylar flips: http://www.wizardcoinsupply.com/products/mylar-flips/