Most comic books & magazines have been printed on newsprint which includes all distributed prior to Modern Age, as well as some Modern Age books. The newsprint used for most comic books has been bleached with acid prior to printing. Some of the acid from the bleach remains in the paper. To mitigate this deterioration, the Comic Book Backing Boards are coated with calcium carbonate so that they absorb the acid that migrates from the book. You will want to store them away from sunlight and in a cool dry place because sunlight, heat, and moisture can accelerate the acid migration process. BCW Brand backing boards are solid bleached sulfate and are certified acid free by an independent testing laboratory.
The National Archives and Records Administration specified the following with regard to the long-term storage and preservation of photographic documents:
"Look for plastic enclosures made from uncoated pure polyethylene, polypropylene or polyester (also called Mylar D or Melinex 516). These are considered stable and non-damaging to photographs."
BCW offers both uncoated virgin polypropylene and Mylar comic bags.
Note: It is recommended that you change your Comic Book Backing Boards and Comic Book Bags every 3 - 5 years.
Comics are classified into 3 major categories, Victorian Age, Platinum Age, and Modern Age. Comic books came into existence during the Modern Age of comics in February
of 1934 with the release of Eastern Color Printing's Famous Funnies #1, Series 1. The Modern Age of comics is classified into 4 sub-categories, Golden Age, Silver
Age, Bronze Age, and Current. Bronze age comics don't feature their own size because they fell in between the Silver and Current ages. Early Bronze comics are sized like
Silver, while late Bronze comics are Current sized.
You will need to determine which of the 4 Modern Age categories that your comic book falls under to be sure to get the proper size of comic bags and backing boards. We suggest that you measure your comic book or refer to the copyright date to determine the category.
Comic Book Bags can be sealed in two ways: