Transdermal therapeutic system with electronic component

Abstract

Transdermal therapeutic systems are described which have at least one electronic component, as well as methods for producing this type of transdermal therapeutic systems.

Claims

1. A method for producing a transdermal therapeutic system comprising at least one electronic component, including the steps of: coating a process film with a pressure-sensitive adhesive; applying prefabricated electronic components onto the adhesive layer; covering the adhesive layer and the electronic components applied thereon with a cover film; removing the cover film, wherein the adhesive and the cover layer are selected so that the adhesive adheres more strongly to the cover film than to the process film and the adhesive film tears during the removal of the cover film at the edges of the applied electronic components; converting the process film with the electrical components applied thereon into a roll or fanfolding the process film loaded with the electronic components; and transferring the electronic components onto transdermal therapeutic systems or their immediate precursor.

2. The method according to claim 1; wherein the cover film is pulled over a deflector roll or an edge during the removal.

3. The method according to claim 1; wherein the dispensing of the electronic components is implemented by means of a labeling machine.

4. A method for producing a transdermal therapeutic system comprising at least one electronic component, including the steps of: applying at least one electronic component onto one of the layers of a laminate which is included in the finished transdermal therapeutic system; covering the electronic components applied onto the one layer of the laminate with a further layer, which is also included in the finished transdermal therapeutic system; and separating individual transdermal therapeutic systems.

5. The method according to claim 4; wherein the application of the at least one electronic component is carried out by means of a mechanical arm provided with a vacuum cup or by means of a gripper.

6. The method according to claim 4; wherein the layer onto which the at least one electronic component is applied is an active agent containing reservoir or an active agent impermeable backing layer in the finished transdermal therapeutic system.

7. The method according to claim 4; wherein the further layer, with which the electronic components applied onto one layer of the laminate is covered, is an active agent containing polymer layer, an active agent free polymer layer, or an active agent impermeable backing layer of the finished transdermal therapeutic system.

8. A method for producing a transdermal therapeutic system comprising at least one electronic component, including the step of embedding at least one electronic component in an active agent containing polymer matrix by casting or pressing the at least one electronic component into a layer forming the polymer matrix.

9. The method according to claim 2; wherein the cover film is pulled over the deflector roll or the edge during the removal by forming an acute angle.

10. The method according to claim 6; wherein the layer onto which the at least one electronic component is applied is the active agent containing reservoir, which is an active agent containing matrix layer.

Description

(1) FIG. 1 is a schematic diagram of some process steps in one embodiment of the method for producing transdermal therapeutic systems which comprise an electronic tag.

(2) First, a web of siliconized paper was provided as a process film 1. The process film 1 was coated in a process step a) on an entire surface with an adhesive layer 2. The adhesive was poly[(2-ethyl hexyl) acrylate-co-methyl acrylate-co-acrylic acid-co-(2,3-epoxypropyl)methacrylate](61.5:33:5.5:0.02). This pressure-sensitive acrylate adhesive is commercially available under the trade name DuroTak 2353 from National Starch, now Henkel. The thickness of the adhesive layer 2 on the process films 1 was 30 m. Then, radio tags 3, 3 were placed on the adhesive layer 2 (process step b). In a subsequent process step (step c), the radio tags 3, 3 and the remaining free surface of the adhesive layer 2 were covered with a polyethylene terephthalate film as a cover film 4. In the areas where the cover film 4 came into contact with the adhesive layer 2, the cover film 4 adhered to the adhesive layer 2. Then, in step d) the cover film 4 was peeled off again. Thereby the areas 2, 2 of the adhesive layer 2 which were in contact with the cover film 4 adhered to the cover film 4 and were peeled off together with the cover film 4. The areas 2 of the adhesive layer 2 covered by the radio tags 3, 3 did not adhere to the cover film 4. When removing the cover film 4 the areas of the adhesive layer 2 adhering to the cover film 4 were separated from the areas of the adhesive layer which were covered by the radio tags 3, 3. In this way, the radio tags 3, 3 remained on an adhesive layer on the process film 1 which was coextensive with their base surface.