Device for the manufacture of pharmaceutical patches
The present invention relates to a device for the manufacture of pharmaceutical patches, a method for the manufacture of pharmaceutical patches, and a package comprising a pharmaceutical patch obtainable by said method.
1. A device for manufacturing pharmaceutical patches comprising
a device for providing a sheet of patch material on a support sheet,
a punching device for forming patches having a surface area and a scrap web, and
a roller at which the scrap web is pulled off,
wherein the roller is equipped with one or more hold-down devices to hold down the patches on the support sheet such that the patches are being separated from the scrap web by pulling off the scrap web, wherein each hold-down device interacts with one patch, wherein each hold-down device is configured to hold down one patch while the scrap web can be freely pulled off between the one or more hold-down devices, and wherein the one or more hold-down devices do not contact the scrap web.
2. The device of claim 1 , wherein each hold-down device has a surface area for contacting the patch, wherein the surface area is equal to or smaller than the surface area of the patch to be contacted.
3. The device of claim 1 , wherein the ratio of the surface area of the hold-down device(s) to the surface area of the patch is equal to or greater than 1:10.
4. The device of claim 1 , wherein the hold-down device comprises a plurality of burls.
5. The device of claim 4 , wherein the roller is a brush roller and the plurality of burls are elastic, flexible and/or deformable bristles.
6. The device of claim 1 , wherein the hold-down device is elastic, flexible and/or deformable, and/or the hold-down device is spring mounted.
7. The device of claim 1 , wherein the hold-down device applies a maximum pressure of 1000 kN/m 2 to the patch.
8. The device of claim 1 , wherein the hold-down device applies a pressure to the patch being sufficiently low to not deform the patch.
9. The device of claim 1 , wherein the roller is equipped with at least two hold-down devices.
10. The device of claim 9 , wherein the hold-down devices are identical.
11. The device of claim 9 , wherein the roller has at least two symmetry planes.
12. The device of claim 1 , wherein the ratio of the surface area of the hold-down device(s) to the surface area of the patch is equal to or greater than 1:4.
13. The device of claim 1 , wherein the ratio of the surface area of the hold-down device(s) to the surface area of the patch is equal to or greater than 1:2.
14. A method comprising utilizing a roller being equipped with one or more hold-down devices in manufacturing pharmaceutical patches, wherein each hold-down device interacts with one patch, wherein each hold-down device is configured to hold down one patch while the scrap web can be freely pulled off between the one or more hold-down devices, and wherein the one or more hold-down devices do not contact the scrap web.
15. A method for the manufacture of pharmaceutical patches comprising
punching a sheet of patch material to form the patches and a scrap web on a sheet support, and
separating the patches from the scrap web by pulling off the scrap web at a roller,
wherein the patches being separated from the scrap web are held down on the sheet support by means of one or more hold-down devices on the roller while the scrap web is pulled off, wherein each hold-down device interacts with one patch, wherein each hold-down device is configured to hold down one patch while the scrap web can be freely pulled off between the one or more hold-down devices, and wherein the one or more hold-down devices do not contact the scrap web.
16. The method of claim 15 , wherein a pressure applied to the patches by the hold-down devices while pulling off the scrap web is sufficiently low to not deform the patches.