Thermal transfer sheet and combination of transfer foil and thermal transfer sheet

Abstract

The present invention provides a thermal transfer sheet that can accurately remove a transfer layer, and a combination of a transfer foil and the thermal transfer sheet. A thermal transfer sheet 10 comprising a peel-off layer 4 on a substrate 1 , wherein the peel-off layer 4 (i) contains at least a vinyl chloride-type resin and an acrylic-type resin, and a mass of the vinyl chloride-type resin based on a total mass of the peel-off layer 4 is more than 50% by mass and not more than 95% by mass, or the peel-off layer 4 (ii) contains a polyester-type resin having a number average molecular weight (Mn) of not more than 17000, and having a glass transition temperature (Tg) of not less than 50° C. and not more than 120° C.

1 . A thermal transfer sheet comprising:
 a substrate; and   a peel-off layer affixed to the substrate,   wherein a surface of the substrate is subjected to an adhesive treatment, or a primer layer is provided between the substrate and the peel-off layer,   wherein the peel-off layer is not removed from the substrate, and   wherein the peel-off layer contains a polyester-type resin having a number average molecular weight (Mn) of not more than 17000 and having a glass transition temperature (Tg) of not less than 50° C. and not more than 120° C.   
     
     
         2 . The thermal transfer sheet according to  claim 1 , wherein the polyester-type resin has a number average molecular weight (Mn) of not less than 3500 and less than 9000. 
     
     
         3 . The thermal transfer sheet according to  claim 1 , wherein the polyester-type resin has a glass transition temperature (Tg) of not less than 50° C. and not more than 100° C. 
     
     
         4 . The thermal transfer sheet according to  claim 2 , wherein the polyester-type resin has a glass transition temperature (Tg) of not less than 50° C. and not more than 100° C.