| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an adhesive film which is unlikely to generate peeling by repulsion of resin film at high a temperature even if it is a pressure-sensitive adhesive film with concealing property which has a halogen-free concealing layer, and is unlikely to gnnerate cutting-off of adhesive film during re-working. <P>SOLUTION: The pressure-sensitive adhesive film includes an adhesive layer on one side of a white substrate, and a concealing layer provided between resin film and the adhesive layer. The halogen content of the concealing layer is equal to or below 0.3 mass%. An ink composition used for the concealing layer which comprises an ink layer contains a polyester urethane resin as a binder resin having a tanδpeak temperature of -30 to 30°C. The use of a pressure-sensitive adhesive film with concealing property containing an isocyanate curing agent as a curing agent prevents ink from easily flowing at a high temperature, gives excellent adhesion between ink and adhesive even at a high temperature, allows the concealing layer to have a relatively flexible cross-linking structure when pealed-off at a high speed for re-working, so that cracks are unlikely to be created and excellent re-workability is obtained. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
