| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To bring about good color development properties of laser marking, and to hardly cause a deformation associated with the laser marking. <P>SOLUTION: A sheet for a card comprises a color development layer which develops a color by being irradiated with a laser beam, and an adhesive layer which is provided on at least one surface. In the sheet for the card, the glass transition temperature (Tg1) of a resin composition for forming the color development layer and the glass transition temperature (Tg2) of a resin composition for forming the adhesive layer satisfy expression (1): Tg1≥Tg2. In the adhesive layer, the ten point height (Rz) of irregularities of a surface is set to be in a range of 3-40μm. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
