Patent ID: 8142594

Claim:
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 ).