| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a forgery preventing film capable of being easily discriminated from a copied forged article, hard to wrinkle, strong against the tearing from a fold and having high mechanical abrasion resistance. SOLUTION: The forgery preventing film comprises a thermoplastic resin stretched after subjected to forgery preventing treatment and the tear strength at least in one direction thereof is not less than 500 mN.</p> |
