| 摘要 |
PURPOSE:To provide the masking film which is colored a green system, has an excellent light shielding effect, has a non-tacky surface, provides tackiness to the peeled film, and is adequately usable both in ordinary applications and the application of resticking by incorporating a coloring agent mixture composed of a specific yellow coloring agent and blue coloring agent to a light shieldable release layer. CONSTITUTION:The coloring agent mixture composed of the yellow coloring agent and blue coloring agent having at least 480nm max. light shielding wavelength is incorporated into the light shieldable release layer to make the color tones of the entire part colored a green system color. The peak of light transmittance is made to exist in a 540 to 570nm wavelength range and the wavelengths of at least <=480nm are shielded; further, the ratio Y1/Y2 of the light transmission quantity Y1 is a 480 to 600nm wavelength range to the light transmission quantity Y2 in a 480 to 700nm wavelength range is held at >=60%. The excellent effect is, therefore, obtd. and the surface is non-tacky and has adequate peeling strength and excellent peeling workability even if the film has an adhesive agent layer. The masking film is adequately utilized even in an ordinary case when the peeled film is not reused and in a case when the film is restuck. |
