| abstract |
PROBLEM TO BE SOLVED: To provide an environmentally friendly waterproof sheet and a waste disposal bag using the same, which can be flowed directly to, for example, a flush toilet due to excellent solubility, disintegration or dispersibility. Things. The resin film has a water-soluble or water-disintegrating resin film, and a water-resistant resin layer laminated on a surface of the resin film. The water-resistant resin layer contains a filler in a resin matrix. 5 is a waterproof sheet 1. As a material for forming the resin film 2, polyvinyl alcohol may be used. As a material for forming the water-resistant resin layer 3, a biodegradable resin is preferably used. The filler 5 is preferably made of a biodegradable resin. The average particle diameter of the filler 5 is preferably 30% or more and 100% or less of the thickness of the waterproof resin layer 3. |