| 摘要 |
PROBLEM TO BE SOLVED: To provide an information recording card, with which abandonment processing is facilitated and the problem of environment pollution is not generated at the time of abandonment processing, by making a card substrate composed of low crystalline thermoplastic resin sheet or double coated non-crystalline sheet having the crystallization lower than a specified value. SOLUTION: A non-crystalline resin such as polycarbonate resin is used as a low crystalline thermoplastic resin sheet having the crystallization lower than 5% to be used for the card substrate or protecting sheet of the card. In place of these non-crystalline resins, the double coated non-crystalline sheet prepared from non-crystalline resins and crystalline resins prepared through a co-extruding is used. Such a white non-crystalline PETG sheet 2 is obtained with a card support 3 as a sheet whose both sides are sandwiched between transparent non-crystalline PETG sheets 1. The rear surface of the provided sheet is coated with adhesive painting so that a plastic thermosensitive recording tape 4 is obtained. By using low crystalline resins, this information recording card having high practical use is free of the problem of hydrogen chloride and dioxin since they are not generated when burned after use. |
