Comic Book Supplies
Our Comic Book bags are Polypropylene, These are NOT acid free, NO Poly Bags in the world are acid free (some other companies says so, but they are NOT), The correct term is acid neutral. We are always testing out products & the same results every time. These bags are good to last between 5-7 years or pending on a safe environment. Out bags are 2.5 mil thick. Thicker than any other bag in the industry.
As Far as Backing Boards, These are NOT Acid Free, They all have a gloss coat on one side to neutralize the acid. Our boards are .24 thick stock & are better than any other backing boards in the industry.
Our Flip-N-Stick Bags all have the adhesive on the back part of the bag, Not the flap.