Opinions Wanted Old Adhesive

[alacrity8]

I recently bought the contents of a frame shop that had closed undisclosed number of years ago.
It was in the back room of a business that has been active, at least most of the time, since the frame shop closed.

There were a number of rolls of adhesive.
Most of it was tiny and unlabeled, and is in the trash.
There was one partial roll of Release Paper that looks fine.
There were 2 nearly full rolls of adhesive that I had never heard of.
Seal Fotoflat
United Supermount
I think I know the answer that I will be given, but here goes.
What should I do with these rolls?
Are they any good?
Does anyone want them?

Brian

 

[framah]

Can't think of any reason they would go bad as they are heat activated.

 

[Prospero]

I'm still using a roll of heatseal film that is at least 10 years old.

I've got laminating film that is '80s vintage but I don't use it. That's why I've got it.

 

[alacrity8]

Can't think of any reason they would go bad as they are heat activated.

Any idea on what temperature to use? How long? Acid free?

I've never heard of either adhesive.

 

[Shayla]

Wendy at DK Group is very helpful with mounting questions. https://www.dkgroup.com/