Disposable, moisture vapour permeable, liquid impermeable covering sheet having odour reduction properties
Abstract
The present invention relates to a disposable covering sheet which is moisture vapour permeable and liquid impermeable and has odour control properties and, if desired, also active agent releasing properties. 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 odour control properties and, if desired, also 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 specific odour control properties and preferably also active agent releasing properties are desirable.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . 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 odour control means which are able to provide a malodour reduction of at least 15%, as measured according to the Odour Control Test described herein.
2 . A disposable, moisture vapour permeable, liquid impermeable covering sheet according to claim 1 wherein said odour control means comprises cyclodextrin and/or zeolite.
3 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 1 further characterised in that said covering sheet comprises an active agent releasing system.
4 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 3 characterised in that said active agent releasing system is able to provide a long lasting release of active agents.
5 . A disposable, moisture vapour permeable, liquid impermeable covering sheet according to claim 3 wherein said active agent is a perfume.
6 . A disposable, moisture vapour permeable, liquid impermeable covering sheet according to claim 3 wherein said active agent is a perfume and said odour control means is a zeolite.
7 . A disposable, moisture vapour permeable, liquid impermeable covering sheet according to claim 5 wherein said perfume is a starch encapsulated perfume.
8 . A disposable, moisture vapour permeable, liquid impermeable covering sheet according to claim 6 wherein said perfume is a starch encapsulated perfume.
9 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 1 characterised in that its Water Vapour Transmission Rate (WVTR) is at least 400 g/m 2 ·24 h.
10 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 9 characterised in that said Water Vapour Transmission Rate (WVTR) is at least 500 g/m 2 ·24 h.
11 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 9 characterised in that said Water Vapour Transmission Rate (WVTR) is at least 600 g/m 2 ·24 h.
12 . A disposable, moisture vapour permeable, liquid impermeable, covering sheet according to claim 1 wherein said covering sheet is a disposable covering sheet for bedding articles.
13 . A disposable covering sheet for bedding articles according to claim 12 wherein said covering sheet is a disposable mattress cover or a disposable pillow cover.
14 . A disposable mattress cover according to claim 13 characterised in that said mattress cover has at least four adhesive means for fixing it to the longitudinal sides of a bed mattress.Join the waitlist — get patent alerts
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