Micro- and/or nano-structured packaging material
First Claim
1. A web-form packaging material comprising:
- at least one layer, comprising packaging material surface, of a sealable material;
wherein the packaging material surface has;
a multiplicity of recesses; and
multiplicity of non-recessed regions;
wherein a maximum distance between two adjacent recesses and a maximum distance between two adjacent non-recessed regions are each less than five times a thickness of the packaging material; and
wherein a depth of the recesses is not less than 1.2 nanometers and not more than 95% of the packaging material thickness.
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Accused Products
Abstract
The invention relates to a web-form packaging material which comprises at least one layer, comprising a packaging material surface, of a sealable material, to a packaging unit with a transdermal therapeutic system and with a packaging material of this kind, and also to a process for producing a packaging unit. For this purpose, at least the abovementioned surface of the packaging material has a multiplicity of recesses and/or a multiplicity of non-recessed regions. The distance between two adjacent recesses and/or the distance between two adjacent non-recessed regions is less than five times the packaging material thickness. Moreover, the depth of the recesses is not less than 1.2 nanometers and not more than 95% of the packaging material thickness.
With the present invention, the sticking of an adhesive on the inner face of the packaging material is effectively prevented.
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Citations
14 Claims
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1. A web-form packaging material comprising:
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at least one layer, comprising packaging material surface, of a sealable material; wherein the packaging material surface has; a multiplicity of recesses; and multiplicity of non-recessed regions; wherein a maximum distance between two adjacent recesses and a maximum distance between two adjacent non-recessed regions are each less than five times a thickness of the packaging material; and wherein a depth of the recesses is not less than 1.2 nanometers and not more than 95% of the packaging material thickness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for producing a packaging unit with a transdermal therapeutic system comprising an adhesive-containing layer, comprising:
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providing at least one surface of a first packaging material with a multiplicity of recesses and a multiplicity of non-recessed regions; wherein the recesses are produced such that; at least one of a distance between two adjacent recesses and a distance between two adjacent non-recessed regions is less than five times the packaging material thickness; and a depth of the recesses is not less than 1.2 nanometers and not more than 95% of the packaging material thickness; wherein the at least one surface of the first packaging material is placed onto a side of the transdermal therapeutic system that faces away from the adhesive-containing layer; and wherein the first packaging material is joined to a second packaging material, which is arranged on a side of the transdermal therapeutic system that faces the active ingredient and adhesive layer, by means of sealing, to produce join seams which are moisture-proof, gas-proof, and aroma proof.
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Specification