| 摘要 |
Disclosed is a method for producing a multilayer substrate (60), e.g. as security paper, comprising at least one first paper layer (10), at least one second paper layer (20), and at least one plastic layer (80) that is located between the paper layers (10, 20, 202, 214), is connected to the paper layers (10, 20, 202, 214), and is made of a thermoplastic polymer material. In order to establish a connection between the different layers according to the inventive method, the plastic layer (80) is delivered between the paper layers (10, 20, 202, 214) in a fused state, and the paper layers (10, 20, 202, 214) are then pressed between a pair of rolls (50) in a continuous process such that a material bond is created between the paper layers (10, 20) and the plastic layer (80) while a penetration zone is embodied in which parts of the plastic layer (80) are connected to the mass of the fiber compound of the paper layers (10, 20, 202, 214). The plastic layer (80) is provided with a grammage of more than 20 g/m2 and a maximum of 100 g/m2. |
