Bag capable of preventing permeation of liquid, cushion and clearance filling structure

摘要

A liquid impermeable bag is made with a foamed sheet, wherein the foamed sheet is obtained by foaming a raw mixture containing reactive silicone with hydroxyl groups and polyester polyol, a raw mixture containing reactive silicone with hydroxyl groups and organic phosphorus compound, or a raw mixture containing dimer acid polyol. A cushion member is made by feeding liquid raw material such as urethane liquid into the bag and foaming or curing the liquid raw material to be integrated with the bag. The permeation of the liquid raw material into the foamed sheet can be prevented and thus the leakage of the liquid raw material onto the surface of the bag, thereby providing a high-quality cushion member.