Method and apparatus for the coating of substrates for pharmaceutical use
First Claim
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1. A method of coating a substrate, the method including the steps of applying an active coating material to the substrate to form an active coating layer, the active coating material comprising biologically active material, wherein the active coating layer is removable from the substrate.
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Abstract
A method of coating a substrate includes applying an active coating material to the substrate to form an active coating layer. The active coating material comprises biologically active material and the active coating layer is removable from the substrate.
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Citations
36 Claims
- 1. A method of coating a substrate, the method including the steps of applying an active coating material to the substrate to form an active coating layer, the active coating material comprising biologically active material, wherein the active coating layer is removable from the substrate.
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17. A method of coating a plurality of coating regions onto the surface of a substrate, the method comprising the steps of:
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(a) applying active coating material to a surface of the substrate to form a plurality of active coating regions on the surface comprising active coating layers, the active coating material including biologically active material (b) applying cover coating material to a surface of the substrate to form a plurality of cover coating regions, the cover coating regions forming layers of cover coating material, each active coating region being substantially completely covered by a cover coating region, such that each region of active coating and cover coating is removable from the surface of the substrate.
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21. An apparatus for coating a substrate, the apparatus comprising:
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(a) a source of active coating material, (b) support means for supporting a substrate adjacent to the source of the active coating material such that the active coating material forms an active coating layer on the surface of the substrate. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An apparatus for coating a substrate, the apparatus comprising:
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(a) a source of active coating material (b) means for moving the substrate relative to the source of coating material, (c) means for applying an active coating material onto a surface of the substrate to form a plurality of active coating regions (d) means for applying a cover coating material onto the surface of the substrate to form a plurality of cover coating regions such that each active coating region is substantially completely covered by a cover coating region, the coating materials being applied such that the active coating material is removable from the surface of the substrate.
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- 28. A coated substrate comprising an active coating layer on a surface of the substrate, the active coating layer including biologically active material and in which the active coating layer is removable from the surface of the coated substrate.
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33. An intermediate product for use in producing a plurality of solid dosage forms, the intermediate product comprising a substrate and an active coating layer deposited on the substrate, the amount of active coating material deposited on a given area of the substrate being controlled such that the product can subsequently be divided into portions with each portion containing a predetermined amount of active coating material, each predetermined amount being one dose of the active material.
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34. A wafer for administration to a patient, the wafer comprising biologically active material and having a thickness of less than 2 mm.
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36. A method of coating a substrate, the method comprising applying an active coating material to a surface of the substrate to form an active coating layer, the active coating material comprising biologically active material, applying a cover coating layer over the exposed surfaces of the active coating layer and dividing the layered product to form layered portions, each layered portion including substantially one dose of the active material.
Specification