| 摘要 |
<p>PURPOSE:To enable a charging rate of expensive glass beads to be adjusted and to obtain an inexpensive recurrent reflection sheet, by properly stretching a sheet wherein glass beads are imbedded. CONSTITUTION:A colored or colorless transparent layer 2 of a thermoplastic resin is formed on a base film 1, and glass beads 3 are imbedded in the resin layer 2 to form a bead-imbedded sheet. The bead-imbedded sheet is biaxially stretched for adjusting a charging rate of the beads, and a focus-adjusting resin layer 7 and a reflection layer 8 are laminated in the mentioned order on the surface resin layer 2 to form a recurrent reflection sheet having a desired reflection luminance.</p> |
