REVERSIBEL ENTFAERBARER SPRITGUSS UND VERFAHREN ZU SEINER HERSTELLUNG

摘要

A molding which is reversibly discolorable in accordance with the conditions of water-absorbing and drying thereof, wherein the molding consists of a layer having open micro-voids (hereinafter referred to as a "scatter layer") and a layer having a hue different from that of the scatter layer (hereinafter referred to as a "color-developing layer"), the scatter layer constitutes at least a part of the outer surface of the molding and the color-developing layer constitutes the remaining part.