| 摘要 |
FIELD: physics.SUBSTANCE: laminated structure includes a layer containing a thermoplastic polymer and a layer containing a thermoplastic polymer and a black pigment as a laser radiation sensitive additive. The layer containing a thermoplastic polymer is free of laser radiation sensitive additives and the layer containing a thermoplastic polymer and a black pigment as a laser radiation sensitive additive has a thickness of 5-30 mcm and contains 40-180 ppm of the black pigment.EFFECT: font information or an image, the definition and resolution of which are better compared to existing systems, can be incorporated into the disclosed laminated structure by laser engraving without deterioration of visual colour effect caused by intense grey colouring of the base material.13 cl, 4 dwg, 1 tbl, 23 ex |
