CLEANING WIPER BLADE

Title:

CLEANING WIPER BLADE

Document Type and Number:

Japanese Patent JP2022027510

Kind Code:

A

Abstract:

To provide a cleaning wiper blade capable of exerting high wiping performance to a to-be-cleaned surface even with a small pressing force.SOLUTION: A cleaning wiper blade includes cleans a surface of a to-be-cleaned member by making a part of an elastic portion contact. Polyurethane of the elastic portion contains an isocyanate compound containing a diisocyanate and a polyfunctional isocyanate with three or more functions, and a reactant of a composition containing alcohol which contains polyfunctional alcohol with three or more functions. The diisocyanate has an aromatic ring in molecules. When M1 is a detection amount of all ions, M2 is the polyfunctional isocyanate with three or more functions, M3 is the diisocyanate, M2/M1 is between 0.001 and 0.028, M3/M1 is between 0.020 and 0.110, M2/M3 is between 0.013 and 0.300, and the concentration of the polyfunctional alcohol with three or more functions in the polyurethane is between 0.12 mmol/g and 0.65 mmol/g.SELECTED DRAWING: Figure 1

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