| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a stably producible counterfeit preventing paper, excellent in adhesive strength of the thread to a paper layer, hardly blocking the thread winding before mixing and forming thereof in the counterfeit preventing paper containing the thread, mixed and formed in the paper layer and the thread suitable therefor. SOLUTION: This thread has adhesive layers comprising resin compositions different in the right and back sides formed in the thread and the adhesive layers on both the right and the back sides, consisting essentially of an adhesive having >=10 deg.C glass transition temperature and composed of an emulsion type adhesive having >=15 deg.C glass transition temperature or a solution type adhesive having >=25 deg.C glass transition temperature in the thread comprising the thermoplastic and/or water-rewettable adhesive layers on both surfaces of a threadlike or a tapelike substrate. The substrate of the thread is a plastic film having a metal vapor deposition layer and either one of the adhesive layers on the right and back sides is composed by using the solution type adhesive, having >=25 deg.C glass transition temperature and consisting essentially of a polyester- based resin or an ethylene-vinyl acetate-based resin.</p> |
