| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a protective layer transfer sheet, which can prevent poor peeling-off in the protective layer transfer due to the increase in the peel force between a substrate sheet and a peeling-off layer even when the protective layer is transfered after the storage for a long time or the storage at a high temperature. <P>SOLUTION: In a protective transfer sheet 1, wherein a heat resistant lubricating layer 6 is formed on one surface of a substrate sheet 2 and a heat-transferable protective layer 7 is formed on at least one part of a surface of the substrate sheet 2, the latter surface being opposite to the former surface on which the heat-resistant lubricating layer 6 is formed, a peeling-off layer 3, a primer layer 4 and an adhesive layer 5 are laminated on the protective layer 7 in this order starting from a side of the substrate sheet 2, and the peeling-off layer 3 comprises an acrylic type copolymer resin having a solution acid value of 2 or less, and the primer layer is preferably composed of a composition containing colloidal fine powders of alumina sol, whereby adhesive force between the peeling-off layer and the adhesive layer can be increased so as to give high peeling-off force from the substrate sheet of the protective layer upon heat transfer of the protective layer. <P>COPYRIGHT: (C)2009,JPO&INPIT |
