Method for the multi-track tailoring of transdermal therapeutic patches

A method for multi-track (13, 14) production of transdermal therapeutic patches comprising a pressure-sensitive adhesive reservoir film (1, 2) which comprises at least one layer of a pressure-sensitive adhesive layer (3) containing active substance and is arranged between a backing film (6) and a removable film (5), said method comprising the steps:

• the reservoir film (1, 2) for each production track (13, 14) is in each case wound as a reservoir film web (15, 16) on a roller (23, 24);
• the reservoir film webs (1, 2) for each track (13, 14) are placed with their pressure-sensitive adhesive layer (3) onto a conveyor element (33, 34) that is moved non-continuously in the longitudinal direction (19) of the reservoir film webs (15, 16);
• all the reservoir film webs (15, 16) lying next to one another on the conveyor element (33, 34) are separated off into individual reservoir films (1, 2) with the aid of a separating device (50), transversely or obliquely with respect to the longitudinal direction (19) and at least approximately simultaneously;
• the reservoir films (1, 2) each lying next to one another at the end of the conveyor element are transferred to said removable protective film (5), which is moved continuously to convey the reservoir films (1, 2) and to place the reservoir films (1, 2) at intervals thereon;
• the conveyor element (33, 34) is briefly slowed down after the transfer of the reservoir films (1, 2).