Cleaning wiper blade

A cleaning wiper blade comprising:

• a hand grip part;
• and
• an elastic part supported by the hand grip part, and to be pressed against a to-be-cleaned surface,
• a part of the elastic part being brought into contact with a surface of a to-be-cleaned member, and thereby the surface of the to-be-cleaned member being cleaned,
• the elastic part comprising polyurethane,
• the polyurethane comprising a reactant of a composition including an isocyanate compound and an alcohol, the isocyanate compound including diisocyanate and tri- or higher functional polyfunctional isocyanate, and the alcohol including tri- or higher functional polyfunctional alcohol, and
• the diisocyanate having an aromatic ring in a molecule,
• wherein when the polyurethane is heated up to 1000° C. at a temperature rise rate of 10° C./s using a mass spectrometer of a direct sample injection system in which a sample is heated and vaporized in an ionization chamber, and a molecule of the sample is ionized, then obtained
• a detected amount of all ions is defined as M1,
• an integrated intensity of a peak in an extracted ion thermogram corresponding to a range of an m/z value derived from the tri- or higher functional polyfunctional isocyanate is defined as M2, and
• an integrated intensity of a peak of an extracted ion thermogram corresponding to a range of an m/z value derived from the diisocyanate is defined as M3,
• M2/M1 is 0.001 to 0.028,
• M3/M1 is 0.020 to 0.110, and
• M2/M3 is 0.013 to 0.300, and
• a concentration of the tri- or higher functional polyfunctional alcohol in the polyurethane is 0.12 mmol/g to 0.65 mmol/g.