| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminate for laser marking useful as a means for applying display, for example, to the surface of a sheetlike molded product comprising a thermoplastic resin by skillfully utilizing a thermoplastic polymer composition for laser marking, improved in its slip properties in a manufacturing process and solved in its blocking problem when stored by a sheet-fed system. <P>SOLUTION: In the laminate for laser marking comprising laminating a B-layer at least on one side of an A-layer, the A-layer is a layer which is marked by at least two different hues by irradiating the A-layer with at least two laser beams having different energies and formed from the thermoplastic polymer composition for multicolor forming laser marking which satisfies (1) a chromatic colorant, a black substance disappearing or discoloring upon the reception of a laser beam and a thermoplastic polymer are contained in the following ratio and (2) the content of the chromatic colorant is 0.001-3 pts.wt. and the content of the black substance is 0.01-2 pts.wt. per 100 pts.wt. of the thermoplastic polymer and the B-layer is formed from a transparent thermoplastic resin and the light transmittance thereof as a single layer is 70% or above. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
