Shop glassine paper sheets and barrier paper at Blick. Layer paper between artwork and documents for protection. They also work well for archival storage.
Glassine - Wikipedia
50 Glassine Paper Bags Size 3 3/4x5 2oz white Glassine
Glassine Paper, Glassine Paper Rolls, Glassine Sheets in Stock - ULINE
White Plain Glassine Paper, GSM: Less than 80, Depends On The Size Of Sheet – Impex Zone
Plastic Sleeves and Print Protectors
Art Packing and Shipping Supplies
Products – Tagged Bristle Paint Brushes– glytterati
Glassine Paper Foil Laminates, Rolls, Pouches, and Bags
Archival Supplies BLICK Art Materials
Buy Glassine Interleaving Paper, 12x12, Acid Free Photo Paper Barrier
Stencil Paper and Films
Coloured Glassine Release Paper Moisture and Oil Resistant Acts as a Barrier for Products Quality Assurance - China Food, Printing