Unfired brick

摘要

Problem to be solved: to provide an unfired brick having a simple expansion work and a small dispersion of expansion margin, and having an expansion point which is difficult to break and peel off.Solution: the surface of the surface is bonded to an organic adhesive tape 20 having an adhesive strength of 2.4 [n / 10 mm] and a tensile strength of 36 [n / 10 mm] or more. The organic adhesive tape is affixed to either the center of the surface in the longitudinal direction or at the opposite ends of the short side of the surface or to both ends of the long side of the surface.Diagram