The Manufacture of Transponders and Contactless Smart Cards - RFID: Fundamentals and Applications in Contactless Smart Cards and Identification - page 330

Figure 12.12 After the cooling of the PVC sheets the individual cards are stamped out of the
multi-purpose sheets
of heat, the foils are brought into a soft elastic state at high pressure (approximately
100-150 ◦ C). This 'bakes' the four sheets to create a permanent bond (Figure 12.11).
After the lamination and cooling of the laminated PVC foils, the individual smart
cards are stamped out of the multi-purpose sheet (Figure 12.12). A subsequent func-
tional test ensures the quality of the cards before these can be sent to the customer.