| 摘要 |
PURPOSE:To improve light resistance and to prevent bleeding of a light shielding agent by incorporating the superfine particles of a UV absorptive metal compd. as the light shielding agent into a light shieldable release layer. CONSTITUTION:A pressure-sensitive adhesive agent layer consisting of a synthetic resin system or rubber system is provided on a plastic film base and, more preferably, the light shieldable release layer contg. a film modifying agent consisting of nitrile rubber, nitrocelulose and specific material and the light shielding agent is provided thereon. The superfine particles of the UV absorptive metal compd. having <=250Angstrom grain size are incorporated as the light shielding agent therein. The light shieldable release layer which has the excellent light resistance, obviates bleeding of the light shielding agent and allows resticking of the stripped film is obtd. in this way. |
