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AssigneeThe Procter & Gamble Company
InventorsPhilip Porter, Elisabetta Russo, Giuseppe Sirianni, Rafael Trujillo
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The present invention relates to a disposable covering sheet which is moisture vapour permeable and liquid impermeable and contains active agent or agents. The disposable covering sheet comprises at least a moisture vapour permeable layer and a liquid impermeable but moisture vapour permeable film layer of thermoplastic compositions. The disposable covering sheet such as, for example, a mattress cover or a pillow cover gives a better comfort to the user by providing active agent releasing properties. The disposable covering sheet of the present invention can find a variety of applications wherein moisture vapour permeability and liquid imperviousness combined with long lasting active agent releasing properties are desirable.
A disposable, moisture vapour permeable, liquid impermeable, covering sheet comprising at least a moisture vapour permeable layer and a liquid impermeable but moisture vapour permeable film layer of thermoplastic composition applied onto said moisture vapour permeable layer characterised in that said covering sheet comprises an active agent releasing system which is able to provide an active agent odour intensity positive difference of at least 5 after 7 days, compared to the active agent odour intensity of the active agent itself after the same period of time, said value determined according to the Active Agent Intensity Test described herein, in order to provide a prolonged release of said active agent after the initial use of said covering sheet.
Dependencies are inferred from the claim text.