| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retro-reflective material which is excellent in flexibility irrespective of directions, not frayed by cutting or the like at the time of working, and also excellent in workability. <P>SOLUTION: Transparent minute balls 4 in which the diameter is 500μm or smaller and the refractive index is 1.7 or larger are buried in a sticky resin layer 2 with a 40-90% burying rate; the front face sides of the transparent minute balls 4 are exposed in the air; the rear face sides of the spherical surfaces of the transparent minute balls 4 in the parts buried in the sticky resin 2 are provided with a reflecting layer 3; the sticky resin layer 2 is stuck to a supporting body 1 made of non-woven fabric; and the thickness of the non-woven fabric supporting body 1 is controlled to 100-500μm and METSUKE weight is controlled to 15-160g/m<SP>2</SP>. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
