Smell on opp comic bags 1 1

[Jim Stienbarger]

I've used two brands of biaxially orientated polypropylene bags (aka bopp bags or opp bags) and have noticed they develope a "sweet" smell. Has anyone else ever noticed the smell or have any knowledge experience with these bags.?  Prominent makers are Comic Pro Line and Comic Clear

[aardvark88]

Just sniffed a pack of 100 Pro Line. Just smells like a musty kitchen.

[marvelmaniac]

I have never had a bag start to smell or smell when opened, the smell is probably coming from the materials used in the manufacturing process, if they smell there is obviously some sort of chemical/material being used that is creating the smell.

Is it good for your books, is the smell transferring to the books?

Just keep in mind, poly bags are good for short term use (up to about 5 years), as time goes by the poly bags start to degrade and produce acids that will, over time, if left to degrade further, could/will damage your books, poly bags also tend to "yellow" as they age.

Keep in mind that comic books start to degrade on their own as soon as they are printed, the inks and paper start to degrade and produce acids over time, modern books are slower to degrade with improvements in printing and the paper used, Gold, Silver, Bronze books were printed on newsprint, the lowest form of paper and degrades rather quickly (in comic book years), as a collector, all you can do is "Slow Down The Aging/Degrading Process Using Proper Storage Technics, You Can Never Stop It.

If these are books you plan on keeping or are higher dollar books, Mylar is highly recommended along with Acid Free Boards.

Mylar is an inert material that does not break down or contain any acids and are Archival Safe and used by the Smithsonian and Library Of Congress., Mylar is good for Life, it comes in 1MIL, 2MIL, 4MIL thicknesses and are made to fit Gold, Silver and Modern Books.

https://www.loc.gov/preservation/scientists/projects/polyester_film.html

https://www.loc.gov/preservation/care/comics.html

https://vinbags.com/just-a-cool-blog-post-with-images/

 

"Biaxially oriented polypropylene (BOPP) is a durable material that is commonly used for packaging bird seed, pet food, deer corn, and animal nutrition products. It is also the packaging of choice for rice and minerals due to its strength and ability to hold weight without breaking easily."

"The OPP bag is a kind of plastic bag, and the material is polypropylene and bidirectional polypropylene. Its characteristic is that it is easy to burn, it melts and drops, and it turns yellow and blue, and it emits less smoke after flameout and continues to burn."

[fiendish]

It's been 18 hours, and nobody's made a Naughty by Nature joke?