I would like to offer you some ruse how to make a waterproof paper with your own hands. You need dissolve 500 g. gramme of white soap in half liter of water. Then prepare next mixture from 100 gramme of gum-arabic and 300 gramme of joiner's glue in half liter of water; heat up both blends, then mix up and immerse a paper into obtained blend. Wait until the paper will moisten, then extract it and let it dry out. Paper will stay waterproof absolutely processed such way and can be in use as packing paper.