Abstract: A forming method of a water-soluble protective film on a front surface of a plate-shaped object includes a water-soluble sheet arrangement step of arranging a water-soluble resin sheet having thermoplasticity on a side of the front surface of the plate-shaped object, and an integration step of heating the water-soluble resin sheet to melt or soften the same, and integrating the water-soluble resin sheet and the plate-shaped object, to form the water-soluble protective film on the plate-shaped object. Preferably, the water-soluble resin sheet may contain a light absorber. A processing method of a plate-shaped object includes the water-soluble sheet arrangement step and integration step.

Abstract: A polishing pad including a disc-shaped base to be mounted to a tip end of a rotatable spindle and a pad portion fixed to one end surface of the base has at least a polishing surface of the pad portion coated with a resin film until before the polishing pad is mounted to the spindle. A polishing method for polishing a wafer with a polishing pad includes a polishing pad mounting step of mounting the polishing pad to the tip end of the spindle, a separating step of separating the resin film from the pad portion, a holding step of holding the wafer on a holding surface of a chuck table, and a polishing step of polishing the wafer by individually rotating the polishing pad and the chuck table while the pad portion and the wafer are brought into contact with each other.

Abstract: A method of laying a protective sheet on a face side of a wafer includes preparing a first protective sheet having, on one surface thereof, a non-adhesive portion to be coextensive with a device region of the wafer and an adhesive portion to be positioned along an outer circumferential excessive region of the wafer, affixing the one surface of the first protective sheet to the face side of the wafer, dropping a liquid resin onto a surface of a second protective sheet that has surface irregularities ranging from Ra 0.2 to 7 ?m and is free of an adhesive layer, bringing another surface of the first protective sheet into facing relation to the surface of the second protective sheet onto which the liquid resin has been dropped, and curing the liquid resin.

Abstract: The present anti-corrosive paint is for use on the inner walls of oil containers to protect said container walls from corrosion caused by micro-organisms.