METHOD FOR PRODUCING RETROREFLECTIVE SOLID MARKING MATERIAL, RETROREFLECTIVE SOLID MARKING MATERIAL AND WRITING UTENSIL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a retroreflective solid marking material which is provided with discriminability due to a retroreflective ability and practicability as a solid marking material, and to provide the solid marking material and a writing utensil.;SOLUTION: The method for producing a retroreflective solid marking material includes: a mixing step to mix a raw material containing water, a glass bead, a binder, a surfactant, grease, and calcined gypsum with a predetermined ratio as essential components; a molding step to mold the raw material mixture obtained in the mixing step; and a baking step to heat-treat the molded product obtained in the molding step. The retroreflective solid marking material is obtained by the producing method, and the writing utensil is composed of the retroreflective solid marking material and a holder to store the same.;COPYRIGHT: (C)2014,JPO&INPIT