Genstand og fremgangsmåde til påføring af et temperaturindikerende materiale

摘要

PCT No. PCT/GB93/01045 Sec. 371 Date Nov. 21, 1994 Sec. 102(e) Date Nov. 21, 1994 PCT Filed May 21, 1993 PCT Pub. No. WO93/24816 PCT Pub. Date Dec. 9, 1993An article is provided for applying a temperature indicating composition (8) on to the surface of a heat recoverable substrate. The article comprises the following four layers: backing layer (2), release layer (4), indicating composition (8), and heat-activatable adhesive layer (10). The conversion temperature of the temperature indicating composition (8) is higher than the melting temperature of the release layer (4), and the melting temperature of the release layer (4) is the same as or higher than the activation temperature of the adhesive (10).