| 摘要 |
A card comprises at least one paper layer (4) coated with a transparent plastic layer (2, 3, 6, 7) on the two surfaces thereof. A paper layer consists of a safety paper containing at least one safety characteristic and the plastic layer is made of a thermoplastic material which is melt in such a way that a transparent envelop is produced exclusively by a high pressure and/or at a high temperature. |
