CVD-coated glass container
AssigneeSchott Glaswerke
InventorsMichael Spallek, Marten Walther, Manfred Lohmeyer, Martin Heming
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Abstract
Glass containers specifically for the storage of pharmaceutical or diagnostic solutions whose surface which comes into contact with the solutions is coated with a layer of oxides and/or nitrides of the elements Si, Ti, Ta, Al or mixtures thereof applied by means of a plasma CVD process.
Claims1
A glass container having a plasma impulse CVD deposited non-planar surface for the storage of pharmaceutical or diagnostic solutions, wherein the non-planar surface comes into contact with the solution and wherein said non-planar surface is coated with a layer consisting of SiO2 applied by means of a plasma impulse CVD process, wherein the layer is 20 to 1000 nm thick, and wherein the leachable quantity of Na-cation is less than 0.01 μg/l if a glass container having a 10 ml capacity is filled with 2 ml 0.4 molar HCl and then autoclaved for 1 hour at 121° C.
Dependencies are inferred from the claim text.