| 摘要 |
PROBLEM TO BE SOLVED: To secure sealing properties of the edge of a mark piece and secure the durability. SOLUTION: A plastic thin film element having a mark-shape container 7, a reflective layer printed in a glass bead-blended ink and a transparent film are laminated on each other. In addition, an encircling line 8 continuously running along the contour 7 is formed using an adhesive.
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