Abstract: The invention provides a highly absorbent resin including a polyvalent metal compound capable of preventing the melting and solidification of the highly absorbent resin and the deposition thereof on the wall of an incinerator during the incineration and disposal of the highly absorbent resin; an absorbent article including the highly absorbent resin and the polyvalent metal compound; a disposal bag or packaging material of the highly absorbent resin or the absorbent article, the disposal bag or packaging material including the polyvalent metal compound; a package of the highly absorbent resin or the absorbent article, packing the polyvalent metal compound therewith; and a method for incinerating and disposing the highly absorbent resin or the absorbent article by adding the polyvalent metal compound.

Abstract: A water-disintegrable sheet having biodegradability. The sheet comprises one or more kinds of biodegradable synthetic fibers, and one or more kinds of natural fibers and/or regenerated fibers, all the fibers being bound together by a binder such that the binding power of the binder will be substantially lost in water. The sheet has a given degree of tensile strength and good softness, coupled with a required degree of liquid absorbency, and still has some biodegradation property. Therefore, the sheet can be flushed in a flush toilet without involving any appreciable increase in the volume of solid residues in a septic tank and/or in a sewage disposal plant and is therefore suitable for use in the form of a wet wiper in particular.