Patent ID: 7468470

Claim:
A method of making a medicinal patch of type A or B includes first making a preliminary laminate for an interior region of the patch, said preliminary laminate comprising a rear protective layer, at least one effective ingredient-containing adhesive layer and an optional removable protective foil and also providing an edge foil for an outer region of the patch, said method comprising the steps of: a) punching out a section or piece corresponding to a shape of the interior region from a foil provided for the outer region, thus forming the edge foil and the section or piece, said section or piece then being discarded as waste; b) assembling the edge foil formed in step a) together with a release liner for the patch to form a first laminate, so that in the case of optional repellant coating of surfaces of the edge foil and the release liner a repellant surface of the edge foil is in contact with a repellant surface of the release liner; c) forming a second laminate for the interior region comprising a backing layer and at least one adhesive matrix layer, from which any protective foil provided thereon earlier during manufacturing is removed; d) combining the first laminate with the second laminate so that an adherent side of the second laminate is in contact with the first laminate, wherein the adherent side of the second laminate is placed on uncoated surfaces of the edge foil for the outer region and directly over a punched out opening provided in the edge foil in step a) and also so that the adherent side of the second laminate is in contact with an optionally repellant coated surface of the release liner, so as to form a combined patch laminate; and e) punching the combined patch laminate to form an outer contour line of a finished patch, which extends around the punched out opening in the edge foil for the outer region, said outer contour line being spaced from the opening by a distance equal to a width of the outer region.