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Presspart Manufacturing Ltd

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email chad.mayoh@presspart.com
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email Whitebirk Industrial Estate, Blackburn, BB1 5RF

Modifying MDI Canister Surfaces to Improve Drug Stability & Drug Delivery

Hydrofluoroalkane (HFA)-based propellants are widely used in modern metered-dose inhalers (MDIs), due to their lack hazardous and environmentally-damaging effects. However, an HFA's active pharmaceutical ingredient can interact with the canister substrate, causing deposition of the drug to the canister walls, or interact with the solution, causing degradation and resulting in increased impurity levels. Over the past few years, a number of surface coatings have been developed that can be applied to MDI canisters and valve components, to protect the contents from deposition and degradation. More recently, plasma processes have been developed to modify and improve the surface energy performance of a MDI canister. This approach has a number of advantages to alternative coatings but requires careful optimisation to ensure the highest quality finish and MDI performance. Richard Turner, Business Development Director, Presspart Manufacturing Ltd, explains.
Modifying MDI Canister Surfaces to Improve Drug Stability & Drug Delivery
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