What is an acid-free paper bag? What are the advantages of acid-free paper capsules?

Acid-free carton is a kind of box made of neutral materials without active acid, such as acid-free cardboard and acid-free corrugated cardboard, which is mainly used to store organic cultural relics such as paintings, documents, fabrics and pendants. The pH value of acid-free paper bag is 7.0.

(neutral)

Or higher.

(Alkaline), with extremely low acid content. Compared with acid paper, acid-free paper has higher strength, better performance and longer storage time. The newspaper you read every day is made of acid paper. If you can keep it carefully, it will last for about 20 years, but if you expose it to the sun and air, it may only last for a few weeks. Acid-free paper can be preserved for at least hundreds of years without obvious deterioration, which is suitable for the permanent preservation of precious organic cultural relics. I hope Hong Rui Wenbo's answer can help you.