How can I use poly film as barrier sheets in older books?
Polyester film is a chemically inert barrier that prevents acid migration. Cut sheets to the text block size to insert between acidic turn-ins and text block pages. Many older book boards are very acidic and need to be isolated from the text. Place the polyester film sheets further inside the text, next to the title page and index, to prevent further acid migration. Barrier sheets can be used in books where selected illustrations have been treated with a deacidification spray. Place a polyester sheet on both sides of these pages. Construct simple polyester folders to isolate acidic enclosures that must remain with the book. When rolling paper or textiles, protect the items from possible acidic tubes with a layer of polyester film.
